bs3kit.h@ 97320

Last change on this file since 97320 was 97320, checked in by vboxsync, 2 years ago
ValKit/bs3kit: Added a Bs3SelSetup32BitCode function for quickly setting up a 32-bit code segment.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 179.7 KB

Line
1	/* $Id: bs3kit.h 97320 2022-10-27 12:45:25Z vboxsync $ */
2	/** @file
3	* BS3Kit - structures, symbols, macros and stuff.
4	*/
5
6	/*
7	* Copyright (C) 2007-2022 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* The contents of this file may alternatively be used under the terms
26	* of the Common Development and Distribution License Version 1.0
27	* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28	* in the VirtualBox distribution, in which case the provisions of the
29	* CDDL are applicable instead of those of the GPL.
30	*
31	* You may elect to license modified versions of this file under the
32	* terms and conditions of either the GPL or the CDDL or both.
33	*
34	* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35	*/
36
37	#ifndef BS3KIT_INCLUDED_bs3kit_h
38	#define BS3KIT_INCLUDED_bs3kit_h
39	#ifndef RT_WITHOUT_PRAGMA_ONCE
40	# pragma once
41	#endif
42
43	#ifndef DOXYGEN_RUNNING
44	# undef IN_RING0
45	# define IN_RING0
46	#endif
47
48	#define RT_NO_STRICT /* Don't drag in IPRT assertion code in inline code we may use (asm.h). */
49	#include <iprt/cdefs.h>
50	#include <iprt/types.h>
51
52	#ifndef DOXYGEN_RUNNING
53	# undef IN_RING0
54	#endif
55
56	/*
57	* Make asm.h and friend compatible with our 64-bit assembly config (ASM_CALL64_MSC).
58	*/
59	#if defined(__GNUC__) && ARCH_BITS == 64
60	# undef DECLASM
61	# ifdef __cplusplus
62	# define DECLASM(type) extern "C" type BS3_CALL
63	# else
64	# define DECLASM(type) type BS3_CALL
65	# endif
66	#endif
67
68
69	/*
70	* Work around ms_abi trouble in the gcc camp (gcc bugzilla #50818).
71	* ASSUMES all va_lists are in functions with
72	*/
73	#if defined(__GNUC__) && ARCH_BITS == 64
74	# undef va_list
75	# undef va_start
76	# undef va_end
77	# undef va_copy
78	# define va_list __builtin_ms_va_list
79	# define va_start(a_Va, a_Arg) __builtin_ms_va_start(a_Va, a_Arg)
80	# define va_end(a_Va) __builtin_ms_va_end(a_Va)
81	# define va_copy(a_DstVa, a_SrcVa) __builtin_ms_va_copy(a_DstVa, a_SrcVa)
82	#endif
83
84
85	/** @def BS3_USE_ALT_16BIT_TEXT_SEG
86	* @ingroup grp_bs3kit
87	* Combines the BS3_USE_RM_TEXT_SEG, BS3_USE_X0_TEXT_SEG, and
88	* BS3_USE_X1_TEXT_SEG indicators into a single one.
89	*/
90	#if defined(BS3_USE_RM_TEXT_SEG) \|\| defined(BS3_USE_X0_TEXT_SEG) \|\| defined(BS3_USE_X1_TEXT_SEG) \|\| defined(DOXYGEN_RUNNING)
91	# define BS3_USE_ALT_16BIT_TEXT_SEG
92	#else
93	# undef BS3_USE_ALT_16BIT_TEXT_SEG
94	#endif
95
96	/** @def BS3_USE_X0_TEXT_SEG
97	* @ingroup grp_bs3kit
98	* Emit 16-bit code to the BS3X0TEXT16 segment - ignored for 32-bit and 64-bit.
99	*
100	* Calling directly into the BS3X0TEXT16 segment is only possible in real-mode
101	* and v8086 mode. In protected mode the real far pointer have to be converted
102	* to a protected mode pointer that uses BS3_SEL_X0TEXT16_CS, Bs3TestDoModes and
103	* associates does this automatically.
104	*/
105	#ifdef DOXYGEN_RUNNING
106	# define BS3_USE_X0_TEXT_SEG
107	#endif
108
109	/** @def BS3_USE_X1_TEXT_SEG
110	* @ingroup grp_bs3kit
111	* Emit 16-bit code to the BS3X1TEXT16 segment - ignored for 32-bit and 64-bit.
112	*
113	* Calling directly into the BS3X1TEXT16 segment is only possible in real-mode
114	* and v8086 mode. In protected mode the real far pointer have to be converted
115	* to a protected mode pointer that uses BS3_SEL_X1TEXT16_CS, Bs3TestDoModes and
116	* associates does this automatically.
117	*/
118	#ifdef DOXYGEN_RUNNING
119	# define BS3_USE_X1_TEXT_SEG
120	#endif
121
122	/** @def BS3_USE_RM_TEXT_SEG
123	* @ingroup grp_bs3kit
124	* Emit 16-bit code to the BS3RMTEXT16 segment - ignored for 32-bit and 64-bit.
125	*
126	* This segment is normally used for real-mode only code, though
127	* BS3_SEL_RMTEXT16_CS can be used to call it from protected mode. Unlike the
128	* BS3X0TEXT16 and BS3X1TEXT16 segments which are empty by default, this segment
129	* is used by common BS3Kit code.
130	*/
131	#ifdef DOXYGEN_RUNNING
132	# define BS3_USE_X0_TEXT_SEG
133	#endif
134
135	/** @def BS3_MODEL_FAR_CODE
136	* @ingroup grp_bs3kit
137	* Default compiler model indicates far code.
138	*/
139	#ifdef DOXYGEN_RUNNING
140	# define BS3_MODEL_FAR_CODE
141	#elif !defined(BS3_MODEL_FAR_CODE) && (defined(__LARGE__) \|\| defined(__MEDIUM__) \|\| defined(__HUGE__)) && ARCH_BITS == 16
142	# define BS3_MODEL_FAR_CODE
143	#endif
144
145
146	/*
147	* We normally don't want the noreturn / aborts attributes as they mess up stack traces.
148	*
149	* Note! pragma aux <fnname> aborts can only be used with functions
150	* implemented in C and functions that does not have parameters.
151	*/
152	#define BS3_KIT_WITH_NO_RETURN
153	#ifndef BS3_KIT_WITH_NO_RETURN
154	# undef DECL_NO_RETURN
155	# define DECL_NO_RETURN(type) type
156	#endif
157
158
159	/*
160	* We may want to reuse some IPRT code in the common name space, so we
161	* redefine the RT_MANGLER to work like BS3_CMN_NM. (We cannot use
162	* BS3_CMN_NM yet, as we need to include IPRT headers with function
163	* declarations before we can define it. Thus the duplciate effort.)
164	*/
165	#if ARCH_BITS == 16
166	# undef RTCALL
167	# if defined(BS3_USE_ALT_16BIT_TEXT_SEG)
168	# define RTCALL __cdecl __far
169	# define RT_MANGLER(a_Name) RT_CONCAT(a_Name,_f16)
170	# else
171	# define RTCALL __cdecl __near
172	# define RT_MANGLER(a_Name) RT_CONCAT(a_Name,_c16)
173	# endif
174	#else
175	# define RT_MANGLER(a_Name) RT_CONCAT3(a_Name,_c,ARCH_BITS)
176	#endif
177	#include <iprt/mangling.h>
178	#include <iprt/x86.h>
179	#include <iprt/err.h>
180
181	/*
182	* Include data symbol mangling (function mangling/mapping must be done
183	* after the protypes).
184	*/
185	#include "bs3kit-mangling-data.h"
186
187
188
189	RT_C_DECLS_BEGIN
190
191	/** @defgroup grp_bs3kit BS3Kit - Boot Sector Kit \#3
192	*
193	* The BS3Kit is a framework for bare metal floppy/usb image tests,
194	* see the @ref pg_bs3kit "doc page" for more.
195	*
196	* @{ */
197
198	/** @name Execution modes.
199	* @{ */
200	#define BS3_MODE_INVALID UINT8_C(0x00)
201	#define BS3_MODE_RM UINT8_C(0x01) /*< real mode. /
202	#define BS3_MODE_PE16 UINT8_C(0x11) /*< 16-bit protected mode kernel+tss, running 16-bit code, unpaged. /
203	#define BS3_MODE_PE16_32 UINT8_C(0x12) /*< 16-bit protected mode kernel+tss, running 32-bit code, unpaged. /
204	#define BS3_MODE_PE16_V86 UINT8_C(0x18) /*< 16-bit protected mode kernel+tss, running virtual 8086 mode code, unpaged. /
205	#define BS3_MODE_PE32 UINT8_C(0x22) /*< 32-bit protected mode kernel+tss, running 32-bit code, unpaged. /
206	#define BS3_MODE_PE32_16 UINT8_C(0x21) /*< 32-bit protected mode kernel+tss, running 16-bit code, unpaged. /
207	#define BS3_MODE_PEV86 UINT8_C(0x28) /*< 32-bit protected mode kernel+tss, running virtual 8086 mode code, unpaged. /
208	#define BS3_MODE_PP16 UINT8_C(0x31) /*< 16-bit protected mode kernel+tss, running 16-bit code, paged. /
209	#define BS3_MODE_PP16_32 UINT8_C(0x32) /*< 16-bit protected mode kernel+tss, running 32-bit code, paged. /
210	#define BS3_MODE_PP16_V86 UINT8_C(0x38) /*< 16-bit protected mode kernel+tss, running virtual 8086 mode code, paged. /
211	#define BS3_MODE_PP32 UINT8_C(0x42) /*< 32-bit protected mode kernel+tss, running 32-bit code, paged. /
212	#define BS3_MODE_PP32_16 UINT8_C(0x41) /*< 32-bit protected mode kernel+tss, running 16-bit code, paged. /
213	#define BS3_MODE_PPV86 UINT8_C(0x48) /*< 32-bit protected mode kernel+tss, running virtual 8086 mode code, paged. /
214	#define BS3_MODE_PAE16 UINT8_C(0x51) /*< 16-bit protected mode kernel+tss, running 16-bit code, PAE paging. /
215	#define BS3_MODE_PAE16_32 UINT8_C(0x52) /*< 16-bit protected mode kernel+tss, running 32-bit code, PAE paging. /
216	#define BS3_MODE_PAE16_V86 UINT8_C(0x58) /*< 16-bit protected mode kernel+tss, running virtual 8086 mode, PAE paging. /
217	#define BS3_MODE_PAE32 UINT8_C(0x62) /*< 32-bit protected mode kernel+tss, running 32-bit code, PAE paging. /
218	#define BS3_MODE_PAE32_16 UINT8_C(0x61) /*< 32-bit protected mode kernel+tss, running 16-bit code, PAE paging. /
219	#define BS3_MODE_PAEV86 UINT8_C(0x68) /*< 32-bit protected mode kernel+tss, running virtual 8086 mode, PAE paging. /
220	#define BS3_MODE_LM16 UINT8_C(0x71) /*< 16-bit long mode (paged), kernel+tss always 64-bit. /
221	#define BS3_MODE_LM32 UINT8_C(0x72) /*< 32-bit long mode (paged), kernel+tss always 64-bit. /
222	#define BS3_MODE_LM64 UINT8_C(0x74) /*< 64-bit long mode (paged), kernel+tss always 64-bit. /
223
224	#define BS3_MODE_CODE_MASK UINT8_C(0x0f) /*< Running code mask. /
225	#define BS3_MODE_CODE_16 UINT8_C(0x01) /*< Running 16-bit code. /
226	#define BS3_MODE_CODE_32 UINT8_C(0x02) /*< Running 32-bit code. /
227	#define BS3_MODE_CODE_64 UINT8_C(0x04) /*< Running 64-bit code. /
228	#define BS3_MODE_CODE_V86 UINT8_C(0x08) /*< Running 16-bit virtual 8086 code. /
229
230	#define BS3_MODE_SYS_MASK UINT8_C(0xf0) /*< kernel+tss mask. /
231	#define BS3_MODE_SYS_RM UINT8_C(0x00) /*< Real mode kernel+tss. /
232	#define BS3_MODE_SYS_PE16 UINT8_C(0x10) /*< 16-bit protected mode kernel+tss. /
233	#define BS3_MODE_SYS_PE32 UINT8_C(0x20) /*< 32-bit protected mode kernel+tss. /
234	#define BS3_MODE_SYS_PP16 UINT8_C(0x30) /*< 16-bit paged protected mode kernel+tss. /
235	#define BS3_MODE_SYS_PP32 UINT8_C(0x40) /*< 32-bit paged protected mode kernel+tss. /
236	#define BS3_MODE_SYS_PAE16 UINT8_C(0x50) /*< 16-bit PAE paged protected mode kernel+tss. /
237	#define BS3_MODE_SYS_PAE32 UINT8_C(0x60) /*< 32-bit PAE paged protected mode kernel+tss. /
238	#define BS3_MODE_SYS_LM UINT8_C(0x70) /*< 64-bit (paged) long mode protected mode kernel+tss. /
239
240	/** Whether the mode has paging enabled. */
241	#define BS3_MODE_IS_PAGED(a_fMode) ((a_fMode) >= BS3_MODE_PP16)
242	/** Whether the mode has legacy paging enabled (legacy as opposed to PAE or
243	* long mode). */
244	#define BS3_MODE_IS_LEGACY_PAGING(a_fMode) ((a_fMode) >= BS3_MODE_PP16 && (a_fMode) < BS3_MODE_PAE16)
245
246	/** Whether the mode is running v8086 code. */
247	#define BS3_MODE_IS_V86(a_fMode) (((a_fMode) & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_V86)
248	/** Whether the we're executing in real mode or v8086 mode. */
249	#define BS3_MODE_IS_RM_OR_V86(a_fMode) ((a_fMode) == BS3_MODE_RM \|\| BS3_MODE_IS_V86(a_fMode))
250	/** Whether the mode is running 16-bit code, except v8086. */
251	#define BS3_MODE_IS_16BIT_CODE_NO_V86(a_fMode) (((a_fMode) & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_16)
252	/** Whether the mode is running 16-bit code (includes v8086). */
253	#define BS3_MODE_IS_16BIT_CODE(a_fMode) (BS3_MODE_IS_16BIT_CODE_NO_V86(a_fMode) \|\| BS3_MODE_IS_V86(a_fMode))
254	/** Whether the mode is running 32-bit code. */
255	#define BS3_MODE_IS_32BIT_CODE(a_fMode) (((a_fMode) & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_32)
256	/** Whether the mode is running 64-bit code. */
257	#define BS3_MODE_IS_64BIT_CODE(a_fMode) (((a_fMode) & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_64)
258
259	/** Whether the system is in real mode. */
260	#define BS3_MODE_IS_RM_SYS(a_fMode) (((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_RM)
261	/** Whether the system is some 16-bit mode that isn't real mode. */
262	#define BS3_MODE_IS_16BIT_SYS_NO_RM(a_fMode) ( ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PE16 \
263	\|\| ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PP16 \
264	\|\| ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PAE16)
265	/** Whether the system is some 16-bit mode (includes real mode). */
266	#define BS3_MODE_IS_16BIT_SYS(a_fMode) (BS3_MODE_IS_16BIT_SYS_NO_RM(a_fMode) \|\| BS3_MODE_IS_RM_SYS(a_fMode))
267	/** Whether the system is some 32-bit mode. */
268	#define BS3_MODE_IS_32BIT_SYS(a_fMode) ( ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PE32 \
269	\|\| ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PP32 \
270	\|\| ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PAE32)
271	/** Whether the system is long mode. */
272	#define BS3_MODE_IS_64BIT_SYS(a_fMode) (((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_LM)
273
274	/** Whether the system is in protected mode (with or without paging).
275	* @note Long mode is not included. */
276	#define BS3_MODE_IS_PM_SYS(a_fMode) ((a_fMode) >= BS3_MODE_SYS_PE16 && (a_fMode) < BS3_MODE_SYS_LM)
277
278	/** @todo testcase: How would long-mode handle a 16-bit TSS loaded prior to the switch? (mainly stack switching wise) Hopefully, it will tripple fault, right? */
279	/** @} */
280
281
282	/** @name BS3_ADDR_XXX - Static Memory Allocation
283	* @{ */
284	/** The flat load address for the code after the bootsector. */
285	#define BS3_ADDR_LOAD 0x10000
286	/** Where we save the boot registers during init.
287	* Located right before the code. */
288	#define BS3_ADDR_REG_SAVE (BS3_ADDR_LOAD - sizeof(BS3REGCTX) - 8)
289	/** Where the stack starts (initial RSP value).
290	* Located 16 bytes (assumed by boot sector) before the saved registers.
291	* SS.BASE=0. The size is a little short of 32KB */
292	#define BS3_ADDR_STACK (BS3_ADDR_REG_SAVE - 16)
293	/** The ring-0 stack (8KB) for ring transitions. */
294	#define BS3_ADDR_STACK_R0 0x06000
295	/** The ring-1 stack (8KB) for ring transitions. */
296	#define BS3_ADDR_STACK_R1 0x04000
297	/** The ring-2 stack (8KB) for ring transitions. */
298	#define BS3_ADDR_STACK_R2 0x02000
299	/** IST1 ring-0 stack for long mode (4KB), used for double faults elsewhere. */
300	#define BS3_ADDR_STACK_R0_IST1 0x09000
301	/** IST2 ring-0 stack for long mode (3KB), used for spare 0 stack elsewhere. */
302	#define BS3_ADDR_STACK_R0_IST2 0x08000
303	/** IST3 ring-0 stack for long mode (1KB). */
304	#define BS3_ADDR_STACK_R0_IST3 0x07400
305	/** IST4 ring-0 stack for long mode (1KB), used for spare 1 stack elsewhere. */
306	#define BS3_ADDR_STACK_R0_IST4 0x07000
307	/** IST5 ring-0 stack for long mode (1KB). */
308	#define BS3_ADDR_STACK_R0_IST5 0x06c00
309	/** IST6 ring-0 stack for long mode (1KB). */
310	#define BS3_ADDR_STACK_R0_IST6 0x06800
311	/** IST7 ring-0 stack for long mode (1KB). */
312	#define BS3_ADDR_STACK_R0_IST7 0x06400
313
314	/** The base address of the BS3TEXT16 segment (same as BS3_LOAD_ADDR).
315	* @sa BS3_SEL_TEXT16 */
316	#define BS3_ADDR_BS3TEXT16 0x10000
317	/** The base address of the BS3SYSTEM16 segment.
318	* @sa BS3_SEL_SYSTEM16 */
319	#define BS3_ADDR_BS3SYSTEM16 0x20000
320	/** The base address of the BS3DATA16/BS3KIT_GRPNM_DATA16 segment.
321	* @sa BS3_SEL_DATA16 */
322	#define BS3_ADDR_BS3DATA16 0x29000
323	/** @} */
324
325	/** @name BS3_SEL_XXX - GDT selector assignments.
326	*
327	* The real mode segment numbers for BS16TEXT, BS16DATA and BS16SYSTEM are
328	* present in the GDT, this allows the 16-bit C/C++ and assembly code to
329	* continue using the real mode segment values in ring-0 protected mode.
330	*
331	* The three segments have fixed locations:
332	* \| segment \| flat address \| real mode segment \|
333	* \| ----------- \| ------------ \| ----------------- \|
334	* \| BS3TEXT16 \| 0x00010000 \| 1000h \|
335	* \| BS3SYSTEM16 \| 0x00020000 \| 2000h \|
336	* \| BS3DATA16 \| 0x00029000 \| 2900h \|
337	*
338	* This means that we've got a lot of GDT space to play around with.
339	*
340	* @{ */
341	#define BS3_SEL_LDT 0x0010 /*< The LDT selector for Bs3Ldt. /
342	#define BS3_SEL_TSS16 0x0020 /*< The 16-bit TSS selector. /
343	#define BS3_SEL_TSS16_DF 0x0028 /*< The 16-bit TSS selector for double faults. /
344	#define BS3_SEL_TSS16_SPARE0 0x0030 /*< The 16-bit TSS selector for testing. /
345	#define BS3_SEL_TSS16_SPARE1 0x0038 /*< The 16-bit TSS selector for testing. /
346	#define BS3_SEL_TSS32 0x0040 /*< The 32-bit TSS selector. /
347	#define BS3_SEL_TSS32_DF 0x0048 /*< The 32-bit TSS selector for double faults. /
348	#define BS3_SEL_TSS32_SPARE0 0x0050 /*< The 32-bit TSS selector for testing. /
349	#define BS3_SEL_TSS32_SPARE1 0x0058 /*< The 32-bit TSS selector for testing. /
350	#define BS3_SEL_TSS32_IOBP_IRB 0x0060 /*< The 32-bit TSS selector with I/O permission and interrupt redirection bitmaps. /
351	#define BS3_SEL_TSS32_IRB 0x0068 /*< The 32-bit TSS selector with only interrupt redirection bitmap (IOPB stripped by limit). /
352	#define BS3_SEL_TSS64 0x0070 /*< The 64-bit TSS selector. /
353	#define BS3_SEL_TSS64_SPARE0 0x0080 /*< The 64-bit TSS selector. /
354	#define BS3_SEL_TSS64_SPARE1 0x0090 /*< The 64-bit TSS selector. /
355	#define BS3_SEL_TSS64_IOBP 0x00a0 /*< The 64-bit TSS selector. /
356
357	#define BS3_SEL_RMTEXT16_CS 0x00e0 /*< Conforming code selector for accessing the BS3RMTEXT16 segment. Runtime config. /
358	#define BS3_SEL_X0TEXT16_CS 0x00e8 /*< Conforming code selector for accessing the BS3X0TEXT16 segment. Runtime config. /
359	#define BS3_SEL_X1TEXT16_CS 0x00f0 /*< Conforming code selector for accessing the BS3X1TEXT16 segment. Runtime config. /
360	#define BS3_SEL_VMMDEV_MMIO16 0x00f8 /*< Selector for accessing the VMMDev MMIO segment at 00df000h from 16-bit code. /
361
362	/** Checks if @a uSel is in the BS3_SEL_RX_XXX range. */
363	#define BS3_SEL_IS_IN_RING_RANGE(uSel) ( (unsigned)(uSel - BS3_SEL_R0_FIRST) < (unsigned)(4 << BS3_SEL_RING_SHIFT) )
364	#define BS3_SEL_RING_SHIFT 8 /*< For the formula: BS3_SEL_R0_XXX + ((cs & 3) << BS3_SEL_RING_SHIFT) /
365	#define BS3_SEL_RING_SUB_MASK 0x00f8 /*< Mask for getting the sub-selector. For use with BS3_SEL_R_FIRST. */
366
367	/** Checks if @a uSel is in the BS3_SEL_R0_XXX range. */
368	#define BS3_SEL_IS_IN_R0_RANGE(uSel) ( (unsigned)(uSel - BS3_SEL_R0_FIRST) < (unsigned)(1 << BS3_SEL_RING_SHIFT) )
369	#define BS3_SEL_R0_FIRST 0x0100 /*< The first selector in the ring-0 block. /
370	#define BS3_SEL_R0_CS16 0x0100 /*< ring-0: 16-bit code selector, base 0x10000. /
371	#define BS3_SEL_R0_DS16 0x0108 /*< ring-0: 16-bit data selector, base 0x23000. /
372	#define BS3_SEL_R0_SS16 0x0110 /*< ring-0: 16-bit stack selector, base 0x00000. /
373	#define BS3_SEL_R0_CS32 0x0118 /*< ring-0: 32-bit flat code selector. /
374	#define BS3_SEL_R0_DS32 0x0120 /*< ring-0: 32-bit flat data selector. /
375	#define BS3_SEL_R0_SS32 0x0128 /*< ring-0: 32-bit flat stack selector. /
376	#define BS3_SEL_R0_CS64 0x0130 /*< ring-0: 64-bit flat code selector. /
377	#define BS3_SEL_R0_DS64 0x0138 /*< ring-0: 64-bit flat data & stack selector. /
378	#define BS3_SEL_R0_CS16_EO 0x0140 /*< ring-0: 16-bit execute-only code selector, not accessed, 0xfffe limit, CS16 base. /
379	#define BS3_SEL_R0_CS16_CNF 0x0148 /*< ring-0: 16-bit conforming code selector, not accessed, 0xfffe limit, CS16 base. /
380	#define BS3_SEL_R0_CS16_CNF_EO 0x0150 /*< ring-0: 16-bit execute-only conforming code selector, not accessed, 0xfffe limit, CS16 base. /
381	#define BS3_SEL_R0_CS32_EO 0x0158 /*< ring-0: 32-bit execute-only code selector, not accessed, flat. /
382	#define BS3_SEL_R0_CS32_CNF 0x0160 /*< ring-0: 32-bit conforming code selector, not accessed, flat. /
383	#define BS3_SEL_R0_CS32_CNF_EO 0x0168 /*< ring-0: 32-bit execute-only conforming code selector, not accessed, flat. /
384	#define BS3_SEL_R0_CS64_EO 0x0170 /*< ring-0: 64-bit execute-only code selector, not accessed, flat. /
385	#define BS3_SEL_R0_CS64_CNF 0x0178 /*< ring-0: 64-bit conforming code selector, not accessed, flat. /
386	#define BS3_SEL_R0_CS64_CNF_EO 0x0180 /*< ring-0: 64-bit execute-only conforming code selector, not accessed, flat. /
387
388	#define BS3_SEL_R1_FIRST 0x0200 /*< The first selector in the ring-1 block. /
389	#define BS3_SEL_R1_CS16 0x0200 /*< ring-1: 16-bit code selector, base 0x10000. /
390	#define BS3_SEL_R1_DS16 0x0208 /*< ring-1: 16-bit data selector, base 0x23000. /
391	#define BS3_SEL_R1_SS16 0x0210 /*< ring-1: 16-bit stack selector, base 0x00000. /
392	#define BS3_SEL_R1_CS32 0x0218 /*< ring-1: 32-bit flat code selector. /
393	#define BS3_SEL_R1_DS32 0x0220 /*< ring-1: 32-bit flat data selector. /
394	#define BS3_SEL_R1_SS32 0x0228 /*< ring-1: 32-bit flat stack selector. /
395	#define BS3_SEL_R1_CS64 0x0230 /*< ring-1: 64-bit flat code selector. /
396	#define BS3_SEL_R1_DS64 0x0238 /*< ring-1: 64-bit flat data & stack selector. /
397	#define BS3_SEL_R1_CS16_EO 0x0240 /*< ring-1: 16-bit execute-only code selector, not accessed, 0xfffe limit, CS16 base. /
398	#define BS3_SEL_R1_CS16_CNF 0x0248 /*< ring-1: 16-bit conforming code selector, not accessed, 0xfffe limit, CS16 base. /
399	#define BS3_SEL_R1_CS16_CNF_EO 0x0250 /*< ring-1: 16-bit execute-only conforming code selector, not accessed, 0xfffe limit, CS16 base. /
400	#define BS3_SEL_R1_CS32_EO 0x0258 /*< ring-1: 32-bit execute-only code selector, not accessed, flat. /
401	#define BS3_SEL_R1_CS32_CNF 0x0260 /*< ring-1: 32-bit conforming code selector, not accessed, flat. /
402	#define BS3_SEL_R1_CS32_CNF_EO 0x0268 /*< ring-1: 32-bit execute-only conforming code selector, not accessed, flat. /
403	#define BS3_SEL_R1_CS64_EO 0x0270 /*< ring-1: 64-bit execute-only code selector, not accessed, flat. /
404	#define BS3_SEL_R1_CS64_CNF 0x0278 /*< ring-1: 64-bit conforming code selector, not accessed, flat. /
405	#define BS3_SEL_R1_CS64_CNF_EO 0x0280 /*< ring-1: 64-bit execute-only conforming code selector, not accessed, flat. /
406
407	#define BS3_SEL_R2_FIRST 0x0300 /*< The first selector in the ring-2 block. /
408	#define BS3_SEL_R2_CS16 0x0300 /*< ring-2: 16-bit code selector, base 0x10000. /
409	#define BS3_SEL_R2_DS16 0x0308 /*< ring-2: 16-bit data selector, base 0x23000. /
410	#define BS3_SEL_R2_SS16 0x0310 /*< ring-2: 16-bit stack selector, base 0x00000. /
411	#define BS3_SEL_R2_CS32 0x0318 /*< ring-2: 32-bit flat code selector. /
412	#define BS3_SEL_R2_DS32 0x0320 /*< ring-2: 32-bit flat data selector. /
413	#define BS3_SEL_R2_SS32 0x0328 /*< ring-2: 32-bit flat stack selector. /
414	#define BS3_SEL_R2_CS64 0x0330 /*< ring-2: 64-bit flat code selector. /
415	#define BS3_SEL_R2_DS64 0x0338 /*< ring-2: 64-bit flat data & stack selector. /
416	#define BS3_SEL_R2_CS16_EO 0x0340 /*< ring-2: 16-bit execute-only code selector, not accessed, 0xfffe limit, CS16 base. /
417	#define BS3_SEL_R2_CS16_CNF 0x0348 /*< ring-2: 16-bit conforming code selector, not accessed, 0xfffe limit, CS16 base. /
418	#define BS3_SEL_R2_CS16_CNF_EO 0x0350 /*< ring-2: 16-bit execute-only conforming code selector, not accessed, 0xfffe limit, CS16 base. /
419	#define BS3_SEL_R2_CS32_EO 0x0358 /*< ring-2: 32-bit execute-only code selector, not accessed, flat. /
420	#define BS3_SEL_R2_CS32_CNF 0x0360 /*< ring-2: 32-bit conforming code selector, not accessed, flat. /
421	#define BS3_SEL_R2_CS32_CNF_EO 0x0368 /*< ring-2: 32-bit execute-only conforming code selector, not accessed, flat. /
422	#define BS3_SEL_R2_CS64_EO 0x0370 /*< ring-2: 64-bit execute-only code selector, not accessed, flat. /
423	#define BS3_SEL_R2_CS64_CNF 0x0378 /*< ring-2: 64-bit conforming code selector, not accessed, flat. /
424	#define BS3_SEL_R2_CS64_CNF_EO 0x0380 /*< ring-2: 64-bit execute-only conforming code selector, not accessed, flat. /
425
426	#define BS3_SEL_R3_FIRST 0x0400 /*< The first selector in the ring-3 block. /
427	#define BS3_SEL_R3_CS16 0x0400 /*< ring-3: 16-bit code selector, base 0x10000. /
428	#define BS3_SEL_R3_DS16 0x0408 /*< ring-3: 16-bit data selector, base 0x23000. /
429	#define BS3_SEL_R3_SS16 0x0410 /*< ring-3: 16-bit stack selector, base 0x00000. /
430	#define BS3_SEL_R3_CS32 0x0418 /*< ring-3: 32-bit flat code selector. /
431	#define BS3_SEL_R3_DS32 0x0420 /*< ring-3: 32-bit flat data selector. /
432	#define BS3_SEL_R3_SS32 0x0428 /*< ring-3: 32-bit flat stack selector. /
433	#define BS3_SEL_R3_CS64 0x0430 /*< ring-3: 64-bit flat code selector. /
434	#define BS3_SEL_R3_DS64 0x0438 /*< ring-3: 64-bit flat data & stack selector. /
435	#define BS3_SEL_R3_CS16_EO 0x0440 /*< ring-3: 16-bit execute-only code selector, not accessed, 0xfffe limit, CS16 base. /
436	#define BS3_SEL_R3_CS16_CNF 0x0448 /*< ring-3: 16-bit conforming code selector, not accessed, 0xfffe limit, CS16 base. /
437	#define BS3_SEL_R3_CS16_CNF_EO 0x0450 /*< ring-3: 16-bit execute-only conforming code selector, not accessed, 0xfffe limit, CS16 base. /
438	#define BS3_SEL_R3_CS32_EO 0x0458 /*< ring-3: 32-bit execute-only code selector, not accessed, flat. /
439	#define BS3_SEL_R3_CS32_CNF 0x0460 /*< ring-3: 32-bit conforming code selector, not accessed, flat. /
440	#define BS3_SEL_R3_CS32_CNF_EO 0x0468 /*< ring-3: 32-bit execute-only conforming code selector, not accessed, flat. /
441	#define BS3_SEL_R3_CS64_EO 0x0470 /*< ring-3: 64-bit execute-only code selector, not accessed, flat. /
442	#define BS3_SEL_R3_CS64_CNF 0x0478 /*< ring-3: 64-bit conforming code selector, not accessed, flat. /
443	#define BS3_SEL_R3_CS64_CNF_EO 0x0480 /*< ring-3: 64-bit execute-only conforming code selector, not accessed, flat. /
444
445	#define BS3_SEL_R3_LAST 0x04f8 /*< ring-3: Last of the BS3_SEL_RX_XXX range. /
446
447	#define BS3_SEL_SPARE_FIRST 0x0500 /*< The first selector in the spare block /
448	#define BS3_SEL_SPARE_00 0x0500 /*< Spare selector number 00h. /
449	#define BS3_SEL_SPARE_01 0x0508 /*< Spare selector number 01h. /
450	#define BS3_SEL_SPARE_02 0x0510 /*< Spare selector number 02h. /
451	#define BS3_SEL_SPARE_03 0x0518 /*< Spare selector number 03h. /
452	#define BS3_SEL_SPARE_04 0x0520 /*< Spare selector number 04h. /
453	#define BS3_SEL_SPARE_05 0x0528 /*< Spare selector number 05h. /
454	#define BS3_SEL_SPARE_06 0x0530 /*< Spare selector number 06h. /
455	#define BS3_SEL_SPARE_07 0x0538 /*< Spare selector number 07h. /
456	#define BS3_SEL_SPARE_08 0x0540 /*< Spare selector number 08h. /
457	#define BS3_SEL_SPARE_09 0x0548 /*< Spare selector number 09h. /
458	#define BS3_SEL_SPARE_0a 0x0550 /*< Spare selector number 0ah. /
459	#define BS3_SEL_SPARE_0b 0x0558 /*< Spare selector number 0bh. /
460	#define BS3_SEL_SPARE_0c 0x0560 /*< Spare selector number 0ch. /
461	#define BS3_SEL_SPARE_0d 0x0568 /*< Spare selector number 0dh. /
462	#define BS3_SEL_SPARE_0e 0x0570 /*< Spare selector number 0eh. /
463	#define BS3_SEL_SPARE_0f 0x0578 /*< Spare selector number 0fh. /
464	#define BS3_SEL_SPARE_10 0x0580 /*< Spare selector number 10h. /
465	#define BS3_SEL_SPARE_11 0x0588 /*< Spare selector number 11h. /
466	#define BS3_SEL_SPARE_12 0x0590 /*< Spare selector number 12h. /
467	#define BS3_SEL_SPARE_13 0x0598 /*< Spare selector number 13h. /
468	#define BS3_SEL_SPARE_14 0x05a0 /*< Spare selector number 14h. /
469	#define BS3_SEL_SPARE_15 0x05a8 /*< Spare selector number 15h. /
470	#define BS3_SEL_SPARE_16 0x05b0 /*< Spare selector number 16h. /
471	#define BS3_SEL_SPARE_17 0x05b8 /*< Spare selector number 17h. /
472	#define BS3_SEL_SPARE_18 0x05c0 /*< Spare selector number 18h. /
473	#define BS3_SEL_SPARE_19 0x05c8 /*< Spare selector number 19h. /
474	#define BS3_SEL_SPARE_1a 0x05d0 /*< Spare selector number 1ah. /
475	#define BS3_SEL_SPARE_1b 0x05d8 /*< Spare selector number 1bh. /
476	#define BS3_SEL_SPARE_1c 0x05e0 /*< Spare selector number 1ch. /
477	#define BS3_SEL_SPARE_1d 0x05e8 /*< Spare selector number 1dh. /
478	#define BS3_SEL_SPARE_1e 0x05f0 /*< Spare selector number 1eh. /
479	#define BS3_SEL_SPARE_1f 0x05f8 /*< Spare selector number 1fh. /
480
481	#define BS3_SEL_TILED 0x0600 /*< 16-bit data tiling: First - base=0x00000000, limit=64KB, DPL=3. /
482	#define BS3_SEL_TILED_LAST 0x0df8 /*< 16-bit data tiling: Last - base=0x00ff0000, limit=64KB, DPL=3. /
483	#define BS3_SEL_TILED_AREA_SIZE 0x001000000 /*< 16-bit data tiling: Size of addressable area, in bytes. (16 MB) /
484
485	#define BS3_SEL_FREE_PART1 0x0e00 /*< Free selector space - part \#1. /
486	#define BS3_SEL_FREE_PART1_LAST 0x0ff8 /*< Free selector space - part \#1, last entry. /
487
488	#define BS3_SEL_TEXT16 0x1000 /*< The BS3TEXT16 selector. /
489
490	#define BS3_SEL_FREE_PART2 0x1008 /*< Free selector space - part \#2. /
491	#define BS3_SEL_FREE_PART2_LAST 0x17f8 /*< Free selector space - part \#2, last entry. /
492
493	#define BS3_SEL_TILED_R0 0x1800 /*< 16-bit data/stack tiling: First - base=0x00000000, limit=64KB, DPL=0. /
494	#define BS3_SEL_TILED_R0_LAST 0x1ff8 /*< 16-bit data/stack tiling: Last - base=0x00ff0000, limit=64KB, DPL=0. /
495
496	#define BS3_SEL_SYSTEM16 0x2000 /*< The BS3SYSTEM16 selector. /
497
498	#define BS3_SEL_FREE_PART3 0x2008 /*< Free selector space - part \#3. /
499	#define BS3_SEL_FREE_PART3_LAST 0x28f8 /*< Free selector space - part \#3, last entry. /
500
501	#define BS3_SEL_DATA16 0x2900 /*< The BS3DATA16/BS3KIT_GRPNM_DATA16 selector. /
502
503	#define BS3_SEL_FREE_PART4 0x2908 /*< Free selector space - part \#4. /
504	#define BS3_SEL_FREE_PART4_LAST 0x2f98 /*< Free selector space - part \#4, last entry. /
505
506	#define BS3_SEL_PRE_TEST_PAGE_08 0x2fa0 /*< Selector located 8 selectors before the test page. /
507	#define BS3_SEL_PRE_TEST_PAGE_07 0x2fa8 /*< Selector located 7 selectors before the test page. /
508	#define BS3_SEL_PRE_TEST_PAGE_06 0x2fb0 /*< Selector located 6 selectors before the test page. /
509	#define BS3_SEL_PRE_TEST_PAGE_05 0x2fb8 /*< Selector located 5 selectors before the test page. /
510	#define BS3_SEL_PRE_TEST_PAGE_04 0x2fc0 /*< Selector located 4 selectors before the test page. /
511	#define BS3_SEL_PRE_TEST_PAGE_03 0x2fc8 /*< Selector located 3 selectors before the test page. /
512	#define BS3_SEL_PRE_TEST_PAGE_02 0x2fd0 /*< Selector located 2 selectors before the test page. /
513	#define BS3_SEL_PRE_TEST_PAGE_01 0x2fd8 /*< Selector located 1 selector before the test page. /
514	#define BS3_SEL_TEST_PAGE 0x2fe0 /*< Start of the test page intended for playing around with paging and GDT. /
515	#define BS3_SEL_TEST_PAGE_00 0x2fe0 /*< Test page selector number 00h (convenience). /
516	#define BS3_SEL_TEST_PAGE_01 0x2fe8 /*< Test page selector number 01h (convenience). /
517	#define BS3_SEL_TEST_PAGE_02 0x2ff0 /*< Test page selector number 02h (convenience). /
518	#define BS3_SEL_TEST_PAGE_03 0x2ff8 /*< Test page selector number 03h (convenience). /
519	#define BS3_SEL_TEST_PAGE_04 0x3000 /*< Test page selector number 04h (convenience). /
520	#define BS3_SEL_TEST_PAGE_05 0x3008 /*< Test page selector number 05h (convenience). /
521	#define BS3_SEL_TEST_PAGE_06 0x3010 /*< Test page selector number 06h (convenience). /
522	#define BS3_SEL_TEST_PAGE_07 0x3018 /*< Test page selector number 07h (convenience). /
523	#define BS3_SEL_TEST_PAGE_LAST 0x3fd0 /*< The last selector in the spare page. /
524
525	#define BS3_SEL_GDT_LIMIT 0x3fd8 /*< The GDT limit. /
526	/** @} */
527
528
529	/** @def BS3_FAR
530	* For indicating far pointers in 16-bit code.
531	* Does nothing in 32-bit and 64-bit code. */
532	/** @def BS3_NEAR
533	* For indicating near pointers in 16-bit code.
534	* Does nothing in 32-bit and 64-bit code. */
535	/** @def BS3_FAR_CODE
536	* For indicating far 16-bit functions.
537	* Does nothing in 32-bit and 64-bit code. */
538	/** @def BS3_NEAR_CODE
539	* For indicating near 16-bit functions.
540	* Does nothing in 32-bit and 64-bit code. */
541	/** @def BS3_FAR_DATA
542	* For indicating far 16-bit external data, i.e. in a segment other than DATA16.
543	* Does nothing in 32-bit and 64-bit code. */
544	#ifdef M_I86
545	# define BS3_FAR __far
546	# define BS3_NEAR __near
547	# define BS3_FAR_CODE __far
548	# define BS3_NEAR_CODE __near
549	# define BS3_FAR_DATA __far
550	#else
551	# define BS3_FAR
552	# define BS3_NEAR
553	# define BS3_FAR_CODE
554	# define BS3_NEAR_CODE
555	# define BS3_FAR_DATA
556	#endif
557
558	#if ARCH_BITS == 16 \|\| defined(DOXYGEN_RUNNING)
559	/** @def BS3_FP_SEG
560	* Get the selector (segment) part of a far pointer.
561	*
562	* @returns selector.
563	* @param a_pv Far pointer.
564	*/
565	# define BS3_FP_SEG(a_pv) ((uint16_t)(__segment)(void BS3_FAR *)(a_pv))
566	/** @def BS3_FP_OFF
567	* Get the segment offset part of a far pointer.
568	*
569	* For sake of convenience, this works like a uintptr_t cast in 32-bit and
570	* 64-bit code.
571	*
572	* @returns offset.
573	* @param a_pv Far pointer.
574	*/
575	# define BS3_FP_OFF(a_pv) ((uint16_t)(void __near *)(a_pv))
576	/** @def BS3_FP_MAKE
577	* Create a far pointer.
578	*
579	* @returns Far pointer.
580	* @param a_uSeg The selector/segment.
581	* @param a_off The offset into the segment.
582	*/
583	# define BS3_FP_MAKE(a_uSeg, a_off) (((__segment)(a_uSeg)) :> ((void __near *)(a_off)))
584	#else
585	# define BS3_FP_OFF(a_pv) ((uintptr_t)(a_pv))
586	#endif
587
588	/** @def BS3_MAKE_PROT_R0PTR_FROM_FLAT
589	* Creates a protected mode pointer from a flat address.
590	*
591	* For sake of convenience, this macro also works in 32-bit and 64-bit mode,
592	* only there it doesn't return a far pointer but a flat point.
593	*
594	* @returns far void pointer if 16-bit code, near/flat void pointer in 32-bit
595	* and 64-bit.
596	* @param a_uFlat Flat address in the first 16MB. */
597	#if ARCH_BITS == 16
598	# define BS3_MAKE_PROT_R0PTR_FROM_FLAT(a_uFlat) \
599	BS3_FP_MAKE(((uint16_t)(a_uFlat >> 16) << 3) + BS3_SEL_TILED, (uint16_t)(a_uFlat))
600	#else
601	# define BS3_MAKE_PROT_R0PTR_FROM_FLAT(a_uFlat) ((void *)(uintptr_t)(a_uFlat))
602	#endif
603
604	/** @def BS3_MAKE_PROT_R0PTR_FROM_REAL
605	* Creates a protected mode pointer from a far real mode address.
606	*
607	* For sake of convenience, this macro also works in 32-bit and 64-bit mode,
608	* only there it doesn't return a far pointer but a flat point.
609	*
610	* @returns far void pointer if 16-bit code, near/flat void pointer in 32-bit
611	* and 64-bit.
612	* @param a_uSeg The selector/segment.
613	* @param a_off The offset into the segment.
614	*/
615	#if ARCH_BITS == 16
616	# define BS3_MAKE_PROT_R0PTR_FROM_REAL(a_uSeg, a_off) BS3_MAKE_PROT_R0PTR_FROM_FLAT(((uint32_t)(a_uSeg) << 4) + (uint16_t)(a_off))
617	#else
618	# define BS3_MAKE_PROT_R0PTR_FROM_REAL(a_uSeg, a_off) ( (void *)(uintptr_t)(((uint32_t)(a_uSeg) << 4) + (uint16_t)(a_off)) )
619	#endif
620
621
622	/** @def BS3_CALL
623	* The calling convension used by BS3 functions. */
624	#if ARCH_BITS != 64
625	# define BS3_CALL __cdecl
626	#elif !defined(_MSC_VER)
627	# define BS3_CALL __attribute__((__ms_abi__))
628	#else
629	# define BS3_CALL
630	#endif
631
632	/** @def IN_BS3KIT
633	* Indicates that we're in the same link job as the BS3Kit code. */
634	#ifdef DOXYGEN_RUNNING
635	# define IN_BS3KIT
636	#endif
637
638	/** @def BS3_DECL
639	* Declares a BS3Kit function with default far/near.
640	*
641	* Until we outgrow BS3TEXT16, we use all near functions in 16-bit.
642	*
643	* @param a_Type The return type. */
644	#if ARCH_BITS != 16 \|\| !defined(BS3_USE_ALT_16BIT_TEXT_SEG)
645	# define BS3_DECL(a_Type) BS3_DECL_NEAR(a_Type)
646	#else
647	# define BS3_DECL(a_Type) BS3_DECL_FAR(a_Type)
648	#endif
649
650	/** @def BS3_DECL_NEAR
651	* Declares a BS3Kit function, always near everywhere.
652	*
653	* Until we outgrow BS3TEXT16, we use all near functions in 16-bit.
654	*
655	* @param a_Type The return type. */
656	#ifdef IN_BS3KIT
657	# define BS3_DECL_NEAR(a_Type) DECLEXPORT(a_Type) BS3_NEAR_CODE BS3_CALL
658	#else
659	# define BS3_DECL_NEAR(a_Type) DECLIMPORT(a_Type) BS3_NEAR_CODE BS3_CALL
660	#endif
661
662	/** @def BS3_DECL_FAR
663	* Declares a BS3Kit function, far 16-bit, otherwise near.
664	*
665	* Until we outgrow BS3TEXT16, we use all near functions in 16-bit.
666	*
667	* @param a_Type The return type. */
668	#ifdef IN_BS3KIT
669	# define BS3_DECL_FAR(a_Type) DECLEXPORT(a_Type) BS3_FAR_CODE BS3_CALL
670	#else
671	# define BS3_DECL_FAR(a_Type) DECLIMPORT(a_Type) BS3_FAR_CODE BS3_CALL
672	#endif
673
674	/** @def BS3_DECL_CALLBACK
675	* Declares a BS3Kit callback function (typically static).
676	*
677	* @param a_Type The return type. */
678	#ifdef IN_BS3KIT
679	# define BS3_DECL_CALLBACK(a_Type) a_Type BS3_FAR_CODE BS3_CALL
680	#else
681	# define BS3_DECL_CALLBACK(a_Type) a_Type BS3_FAR_CODE BS3_CALL
682	#endif
683
684	/** @def BS3_DECL_NEAR_CALLBACK
685	* Declares a near BS3Kit callback function (typically static).
686	*
687	* 16-bit users must be in CGROUP16!
688	*
689	* @param a_Type The return type. */
690	#ifdef IN_BS3KIT
691	# define BS3_DECL_NEAR_CALLBACK(a_Type) a_Type BS3_NEAR_CODE BS3_CALL
692	#else
693	# define BS3_DECL_NEAR_CALLBACK(a_Type) a_Type BS3_NEAR_CODE BS3_CALL
694	#endif
695
696	/**
697	* Constructs a common name.
698	*
699	* Example: BS3_CMN_NM(Bs3Shutdown)
700	*
701	* @param a_Name The name of the function or global variable.
702	*/
703	#define BS3_CMN_NM(a_Name) RT_CONCAT3(a_Name,_c,ARCH_BITS)
704
705	/**
706	* Constructs a common function name, far in 16-bit code.
707	*
708	* Example: BS3_CMN_FAR_NM(Bs3Shutdown)
709	*
710	* @param a_Name The name of the function.
711	*/
712	#if ARCH_BITS == 16
713	# define BS3_CMN_FAR_NM(a_Name) RT_CONCAT(a_Name,_f16)
714	#else
715	# define BS3_CMN_FAR_NM(a_Name) RT_CONCAT3(a_Name,_c,ARCH_BITS)
716	#endif
717
718	/**
719	* Constructs a common function name, far or near as defined by the source.
720	*
721	* Which to use in 16-bit mode is defined by BS3_USE_ALT_16BIT_TEXT_SEG. In
722	* 32-bit and 64-bit mode there are no far symbols, only near ones.
723	*
724	* Example: BS3_CMN_FN_NM(Bs3Shutdown)
725	*
726	* @param a_Name The name of the function.
727	*/
728	#if ARCH_BITS != 16 \|\| !defined(BS3_USE_ALT_16BIT_TEXT_SEG)
729	# define BS3_CMN_FN_NM(a_Name) BS3_CMN_NM(a_Name)
730	#else
731	# define BS3_CMN_FN_NM(a_Name) BS3_CMN_FAR_NM(a_Name)
732	#endif
733
734
735	/**
736	* Constructs a data name.
737	*
738	* This glosses over the underscore prefix usage of our 16-bit, 32-bit and
739	* 64-bit compilers.
740	*
741	* Example: @code{.c}
742	* \#define Bs3Gdt BS3_DATA_NM(Bs3Gdt)
743	* extern X86DESC BS3_FAR_DATA Bs3Gdt
744	* @endcode
745	*
746	* @param a_Name The name of the global variable.
747	* @remarks Mainly used in bs3kit-mangling.h, internal headers and templates.
748	*/
749	//converter does this now//#if ARCH_BITS == 64
750	//converter does this now//# define BS3_DATA_NM(a_Name) RT_CONCAT(_,a_Name)
751	//converter does this now//#else
752	# define BS3_DATA_NM(a_Name) a_Name
753	//converter does this now//#endif
754
755	/**
756	* Template for creating a pointer union type.
757	* @param a_BaseName The base type name.
758	* @param a_Modifiers The type modifier.
759	*/
760	#define BS3_PTR_UNION_TEMPLATE(a_BaseName, a_Modifiers) \
761	typedef union a_BaseName \
762	{ \
763	/** Pointer into the void. */ \
764	a_Modifiers void BS3_FAR *pv; \
765	/** As a signed integer. */ \
766	intptr_t i; \
767	/** As an unsigned integer. */ \
768	uintptr_t u; \
769	/** Pointer to char value. */ \
770	a_Modifiers char BS3_FAR *pch; \
771	/** Pointer to char value. */ \
772	a_Modifiers unsigned char BS3_FAR *puch; \
773	/** Pointer to a int value. */ \
774	a_Modifiers int BS3_FAR *pi; \
775	/** Pointer to a unsigned int value. */ \
776	a_Modifiers unsigned int BS3_FAR *pu; \
777	/** Pointer to a long value. */ \
778	a_Modifiers long BS3_FAR *pl; \
779	/** Pointer to a long value. */ \
780	a_Modifiers unsigned long BS3_FAR *pul; \
781	/** Pointer to a memory size value. */ \
782	a_Modifiers size_t BS3_FAR *pcb; \
783	/** Pointer to a byte value. */ \
784	a_Modifiers uint8_t BS3_FAR *pb; \
785	/** Pointer to a 8-bit unsigned value. */ \
786	a_Modifiers uint8_t BS3_FAR *pu8; \
787	/** Pointer to a 16-bit unsigned value. */ \
788	a_Modifiers uint16_t BS3_FAR *pu16; \
789	/** Pointer to a 32-bit unsigned value. */ \
790	a_Modifiers uint32_t BS3_FAR *pu32; \
791	/** Pointer to a 64-bit unsigned value. */ \
792	a_Modifiers uint64_t BS3_FAR *pu64; \
793	/** Pointer to a UTF-16 character. */ \
794	a_Modifiers RTUTF16 BS3_FAR *pwc; \
795	/** Pointer to a UUID character. */ \
796	a_Modifiers RTUUID BS3_FAR *pUuid; \
797	} a_BaseName; \
798	/** Pointer to a pointer union. */ \
799	typedef a_BaseName *RT_CONCAT(P,a_BaseName)
800	BS3_PTR_UNION_TEMPLATE(BS3PTRUNION, RT_NOTHING);
801	BS3_PTR_UNION_TEMPLATE(BS3CPTRUNION, const);
802	BS3_PTR_UNION_TEMPLATE(BS3VPTRUNION, volatile);
803	BS3_PTR_UNION_TEMPLATE(BS3CVPTRUNION, const volatile);
804
805	/** Generic far function type. */
806	typedef BS3_DECL_FAR(void) FNBS3FAR(void);
807	/** Generic far function pointer type. */
808	typedef FNBS3FAR *FPFNBS3FAR;
809
810	/** Generic near function type. */
811	typedef BS3_DECL_NEAR(void) FNBS3NEAR(void);
812	/** Generic near function pointer type. */
813	typedef FNBS3NEAR *PFNBS3NEAR;
814
815	/** Generic far 16:16 function pointer type for address conversion functions. */
816	#if ARCH_BITS == 16
817	typedef FPFNBS3FAR PFNBS3FARADDRCONV;
818	#else
819	typedef uint32_t PFNBS3FARADDRCONV;
820	#endif
821
822	/** The system call vector. */
823	#define BS3_TRAP_SYSCALL UINT8_C(0x20)
824
825	/** @name System call numbers (ax).
826	* Paramenters are generally passed in registers specific to each system call,
827	* however cx:xSI is used for passing a pointer parameter.
828	* @{ */
829	/** Print char (cl). */
830	#define BS3_SYSCALL_PRINT_CHR UINT16_C(0x0001)
831	/** Print string (pointer in cx:xSI, length in dx). */
832	#define BS3_SYSCALL_PRINT_STR UINT16_C(0x0002)
833	/** Switch to ring-0. */
834	#define BS3_SYSCALL_TO_RING0 UINT16_C(0x0003)
835	/** Switch to ring-1. */
836	#define BS3_SYSCALL_TO_RING1 UINT16_C(0x0004)
837	/** Switch to ring-2. */
838	#define BS3_SYSCALL_TO_RING2 UINT16_C(0x0005)
839	/** Switch to ring-3. */
840	#define BS3_SYSCALL_TO_RING3 UINT16_C(0x0006)
841	/** Restore context (pointer in cx:xSI, flags in dx). */
842	#define BS3_SYSCALL_RESTORE_CTX UINT16_C(0x0007)
843	/** Set DRx register (value in ESI, register number in dl). */
844	#define BS3_SYSCALL_SET_DRX UINT16_C(0x0008)
845	/** Get DRx register (register number in dl, value returned in ax:dx). */
846	#define BS3_SYSCALL_GET_DRX UINT16_C(0x0009)
847	/** Set CRx register (value in ESI, register number in dl). */
848	#define BS3_SYSCALL_SET_CRX UINT16_C(0x000a)
849	/** Get CRx register (register number in dl, value returned in ax:dx). */
850	#define BS3_SYSCALL_GET_CRX UINT16_C(0x000b)
851	/** Set the task register (value in ESI). */
852	#define BS3_SYSCALL_SET_TR UINT16_C(0x000c)
853	/** Get the task register (value returned in ax). */
854	#define BS3_SYSCALL_GET_TR UINT16_C(0x000d)
855	/** Set the LDT register (value in ESI). */
856	#define BS3_SYSCALL_SET_LDTR UINT16_C(0x000e)
857	/** Get the LDT register (value returned in ax). */
858	#define BS3_SYSCALL_GET_LDTR UINT16_C(0x000f)
859	/** Set XCR0 register (value in edx:esi). */
860	#define BS3_SYSCALL_SET_XCR0 UINT16_C(0x0010)
861	/** Get XCR0 register (value returned in edx:eax). */
862	#define BS3_SYSCALL_GET_XCR0 UINT16_C(0x0011)
863	/** The last system call value. */
864	#define BS3_SYSCALL_LAST BS3_SYSCALL_GET_XCR0
865	/** @} */
866
867
868
869	/** @defgroup grp_bs3kit_system System Structures
870	* @{ */
871	/** The GDT, indexed by BS3_SEL_XXX shifted by 3. */
872	extern X86DESC BS3_FAR_DATA Bs3Gdt[(BS3_SEL_GDT_LIMIT + 1) / 8];
873
874	extern X86DESC64 BS3_FAR_DATA Bs3Gdt_Ldt; /*< @see BS3_SEL_LDT /
875	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss16; /*< @see BS3_SEL_TSS16 /
876	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss16DoubleFault; /*< @see BS3_SEL_TSS16_DF /
877	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss16Spare0; /*< @see BS3_SEL_TSS16_SPARE0 /
878	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss16Spare1; /*< @see BS3_SEL_TSS16_SPARE1 /
879	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32; /*< @see BS3_SEL_TSS32 /
880	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32DoubleFault; /*< @see BS3_SEL_TSS32_DF /
881	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32Spare0; /*< @see BS3_SEL_TSS32_SPARE0 /
882	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32Spare1; /*< @see BS3_SEL_TSS32_SPARE1 /
883	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32IobpIntRedirBm; /*< @see BS3_SEL_TSS32_IOBP_IRB /
884	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32IntRedirBm; /*< @see BS3_SEL_TSS32_IRB /
885	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss64; /*< @see BS3_SEL_TSS64 /
886	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss64Spare0; /*< @see BS3_SEL_TSS64_SPARE0 /
887	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss64Spare1; /*< @see BS3_SEL_TSS64_SPARE1 /
888	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss64Iobp; /*< @see BS3_SEL_TSS64_IOBP /
889	extern X86DESC BS3_FAR_DATA Bs3Gdte_RMTEXT16_CS; /*< @see BS3_SEL_RMTEXT16_CS /
890	extern X86DESC BS3_FAR_DATA Bs3Gdte_X0TEXT16_CS; /*< @see BS3_SEL_X0TEXT16_CS /
891	extern X86DESC BS3_FAR_DATA Bs3Gdte_X1TEXT16_CS; /*< @see BS3_SEL_X1TEXT16_CS /
892	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_MMIO16; /*< @see BS3_SEL_VMMDEV_MMIO16 /
893
894	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_First; /*< @see BS3_SEL_R0_FIRST /
895	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS16; /*< @see BS3_SEL_R0_CS16 /
896	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_DS16; /*< @see BS3_SEL_R0_DS16 /
897	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_SS16; /*< @see BS3_SEL_R0_SS16 /
898	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS32; /*< @see BS3_SEL_R0_CS32 /
899	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_DS32; /*< @see BS3_SEL_R0_DS32 /
900	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_SS32; /*< @see BS3_SEL_R0_SS32 /
901	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS64; /*< @see BS3_SEL_R0_CS64 /
902	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_DS64; /*< @see BS3_SEL_R0_DS64 /
903	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS16_EO; /*< @see BS3_SEL_R0_CS16_EO /
904	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS16_CNF; /*< @see BS3_SEL_R0_CS16_CNF /
905	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS16_CND_EO; /*< @see BS3_SEL_R0_CS16_CNF_EO /
906	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS32_EO; /*< @see BS3_SEL_R0_CS32_EO /
907	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS32_CNF; /*< @see BS3_SEL_R0_CS32_CNF /
908	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS32_CNF_EO; /*< @see BS3_SEL_R0_CS32_CNF_EO /
909	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS64_EO; /*< @see BS3_SEL_R0_CS64_EO /
910	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS64_CNF; /*< @see BS3_SEL_R0_CS64_CNF /
911	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS64_CNF_EO; /*< @see BS3_SEL_R0_CS64_CNF_EO /
912
913	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_First; /*< @see BS3_SEL_R1_FIRST /
914	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS16; /*< @see BS3_SEL_R1_CS16 /
915	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_DS16; /*< @see BS3_SEL_R1_DS16 /
916	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_SS16; /*< @see BS3_SEL_R1_SS16 /
917	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS32; /*< @see BS3_SEL_R1_CS32 /
918	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_DS32; /*< @see BS3_SEL_R1_DS32 /
919	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_SS32; /*< @see BS3_SEL_R1_SS32 /
920	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS64; /*< @see BS3_SEL_R1_CS64 /
921	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_DS64; /*< @see BS3_SEL_R1_DS64 /
922	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS16_EO; /*< @see BS3_SEL_R1_CS16_EO /
923	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS16_CNF; /*< @see BS3_SEL_R1_CS16_CNF /
924	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS16_CND_EO; /*< @see BS3_SEL_R1_CS16_CNF_EO /
925	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS32_EO; /*< @see BS3_SEL_R1_CS32_EO /
926	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS32_CNF; /*< @see BS3_SEL_R1_CS32_CNF /
927	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS32_CNF_EO; /*< @see BS3_SEL_R1_CS32_CNF_EO /
928	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS64_EO; /*< @see BS3_SEL_R1_CS64_EO /
929	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS64_CNF; /*< @see BS3_SEL_R1_CS64_CNF /
930	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS64_CNF_EO; /*< @see BS3_SEL_R1_CS64_CNF_EO /
931
932	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_First; /*< @see BS3_SEL_R2_FIRST /
933	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS16; /*< @see BS3_SEL_R2_CS16 /
934	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_DS16; /*< @see BS3_SEL_R2_DS16 /
935	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_SS16; /*< @see BS3_SEL_R2_SS16 /
936	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS32; /*< @see BS3_SEL_R2_CS32 /
937	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_DS32; /*< @see BS3_SEL_R2_DS32 /
938	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_SS32; /*< @see BS3_SEL_R2_SS32 /
939	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS64; /*< @see BS3_SEL_R2_CS64 /
940	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_DS64; /*< @see BS3_SEL_R2_DS64 /
941	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS16_EO; /*< @see BS3_SEL_R2_CS16_EO /
942	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS16_CNF; /*< @see BS3_SEL_R2_CS16_CNF /
943	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS16_CND_EO; /*< @see BS3_SEL_R2_CS16_CNF_EO /
944	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS32_EO; /*< @see BS3_SEL_R2_CS32_EO /
945	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS32_CNF; /*< @see BS3_SEL_R2_CS32_CNF /
946	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS32_CNF_EO; /*< @see BS3_SEL_R2_CS32_CNF_EO /
947	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS64_EO; /*< @see BS3_SEL_R2_CS64_EO /
948	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS64_CNF; /*< @see BS3_SEL_R2_CS64_CNF /
949	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS64_CNF_EO; /*< @see BS3_SEL_R2_CS64_CNF_EO /
950
951	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_First; /*< @see BS3_SEL_R3_FIRST /
952	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS16; /*< @see BS3_SEL_R3_CS16 /
953	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_DS16; /*< @see BS3_SEL_R3_DS16 /
954	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_SS16; /*< @see BS3_SEL_R3_SS16 /
955	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS32; /*< @see BS3_SEL_R3_CS32 /
956	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_DS32; /*< @see BS3_SEL_R3_DS32 /
957	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_SS32; /*< @see BS3_SEL_R3_SS32 /
958	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS64; /*< @see BS3_SEL_R3_CS64 /
959	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_DS64; /*< @see BS3_SEL_R3_DS64 /
960	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS16_EO; /*< @see BS3_SEL_R3_CS16_EO /
961	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS16_CNF; /*< @see BS3_SEL_R3_CS16_CNF /
962	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS16_CND_EO; /*< @see BS3_SEL_R3_CS16_CNF_EO /
963	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS32_EO; /*< @see BS3_SEL_R3_CS32_EO /
964	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS32_CNF; /*< @see BS3_SEL_R3_CS32_CNF /
965	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS32_CNF_EO; /*< @see BS3_SEL_R3_CS32_CNF_EO /
966	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS64_EO; /*< @see BS3_SEL_R3_CS64_EO /
967	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS64_CNF; /*< @see BS3_SEL_R3_CS64_CNF /
968	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS64_CNF_EO; /*< @see BS3_SEL_R3_CS64_CNF_EO /
969
970	extern X86DESC BS3_FAR_DATA Bs3GdteSpare00; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_00 /
971	extern X86DESC BS3_FAR_DATA Bs3GdteSpare01; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_01 /
972	extern X86DESC BS3_FAR_DATA Bs3GdteSpare02; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_02 /
973	extern X86DESC BS3_FAR_DATA Bs3GdteSpare03; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_03 /
974	extern X86DESC BS3_FAR_DATA Bs3GdteSpare04; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_04 /
975	extern X86DESC BS3_FAR_DATA Bs3GdteSpare05; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_05 /
976	extern X86DESC BS3_FAR_DATA Bs3GdteSpare06; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_06 /
977	extern X86DESC BS3_FAR_DATA Bs3GdteSpare07; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_07 /
978	extern X86DESC BS3_FAR_DATA Bs3GdteSpare08; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_08 /
979	extern X86DESC BS3_FAR_DATA Bs3GdteSpare09; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_09 /
980	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0a; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0a /
981	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0b; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0b /
982	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0c; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0c /
983	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0d; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0d /
984	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0e; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0e /
985	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0f; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0f /
986	extern X86DESC BS3_FAR_DATA Bs3GdteSpare10; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_10 /
987	extern X86DESC BS3_FAR_DATA Bs3GdteSpare11; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_11 /
988	extern X86DESC BS3_FAR_DATA Bs3GdteSpare12; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_12 /
989	extern X86DESC BS3_FAR_DATA Bs3GdteSpare13; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_13 /
990	extern X86DESC BS3_FAR_DATA Bs3GdteSpare14; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_14 /
991	extern X86DESC BS3_FAR_DATA Bs3GdteSpare15; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_15 /
992	extern X86DESC BS3_FAR_DATA Bs3GdteSpare16; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_16 /
993	extern X86DESC BS3_FAR_DATA Bs3GdteSpare17; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_17 /
994	extern X86DESC BS3_FAR_DATA Bs3GdteSpare18; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_18 /
995	extern X86DESC BS3_FAR_DATA Bs3GdteSpare19; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_19 /
996	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1a; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1a /
997	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1b; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1b /
998	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1c; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1c /
999	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1d; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1d /
1000	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1e; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1e /
1001	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1f; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1f /
1002
1003	/** GDTs setting up the tiled 16-bit access to the first 16 MBs of memory.
1004	* @see BS3_SEL_TILED, BS3_SEL_TILED_LAST, BS3_SEL_TILED_AREA_SIZE */
1005	extern X86DESC BS3_FAR_DATA Bs3GdteTiled[256];
1006	/** Free GDTes, part \#1. */
1007	extern X86DESC BS3_FAR_DATA Bs3GdteFreePart1[64];
1008	/** The BS3TEXT16/BS3CLASS16CODE GDT entry. @see BS3_SEL_TEXT16 */
1009	extern X86DESC BS3_FAR_DATA Bs3Gdte_CODE16;
1010	/** Free GDTes, part \#2. */
1011	extern X86DESC BS3_FAR_DATA Bs3GdteFreePart2[511];
1012	/** The BS3SYSTEM16 GDT entry. */
1013	extern X86DESC BS3_FAR_DATA Bs3Gdte_SYSTEM16;
1014	/** Free GDTes, part \#3. */
1015	extern X86DESC BS3_FAR_DATA Bs3GdteFreePart3[223];
1016	/** The BS3DATA16/BS3KIT_GRPNM_DATA16 GDT entry. */
1017	extern X86DESC BS3_FAR_DATA Bs3Gdte_DATA16;
1018
1019	/** Free GDTes, part \#4. */
1020	extern X86DESC BS3_FAR_DATA Bs3GdteFreePart4[211];
1021
1022	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage08; /*< GDT entry 8 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_08 /
1023	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage07; /*< GDT entry 7 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_07 /
1024	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage06; /*< GDT entry 6 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_06 /
1025	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage05; /*< GDT entry 5 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_05 /
1026	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage04; /*< GDT entry 4 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_04 /
1027	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage03; /*< GDT entry 3 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_03 /
1028	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage02; /*< GDT entry 2 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_02 /
1029	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage01; /*< GDT entry 1 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_01 /
1030	/** Array of GDT entries starting on a page boundrary and filling (almost) the
1031	* whole page. This is for playing with paging and GDT usage.
1032	* @see BS3_SEL_TEST_PAGE */
1033	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage[2043];
1034	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage00; /*< GDT entry 0 on the test page (convenience). @see BS3_SEL_TEST_PAGE_00 /
1035	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage01; /*< GDT entry 1 on the test page (convenience). @see BS3_SEL_TEST_PAGE_01 /
1036	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage02; /*< GDT entry 2 on the test page (convenience). @see BS3_SEL_TEST_PAGE_02 /
1037	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage03; /*< GDT entry 3 on the test page (convenience). @see BS3_SEL_TEST_PAGE_03 /
1038	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage04; /*< GDT entry 4 on the test page (convenience). @see BS3_SEL_TEST_PAGE_04 /
1039	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage05; /*< GDT entry 5 on the test page (convenience). @see BS3_SEL_TEST_PAGE_05 /
1040	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage06; /*< GDT entry 6 on the test page (convenience). @see BS3_SEL_TEST_PAGE_06 /
1041	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage07; /*< GDT entry 7 on the test page (convenience). @see BS3_SEL_TEST_PAGE_07 /
1042
1043	/** The end of the GDT (exclusive - contains eye-catcher string). */
1044	extern X86DESC BS3_FAR_DATA Bs3GdtEnd;
1045
1046	/** The default 16-bit TSS. */
1047	extern X86TSS16 BS3_FAR_DATA Bs3Tss16;
1048	extern X86TSS16 BS3_FAR_DATA Bs3Tss16DoubleFault;
1049	extern X86TSS16 BS3_FAR_DATA Bs3Tss16Spare0;
1050	extern X86TSS16 BS3_FAR_DATA Bs3Tss16Spare1;
1051	/** The default 32-bit TSS. */
1052	extern X86TSS32 BS3_FAR_DATA Bs3Tss32;
1053	extern X86TSS32 BS3_FAR_DATA Bs3Tss32DoubleFault;
1054	extern X86TSS32 BS3_FAR_DATA Bs3Tss32Spare0;
1055	extern X86TSS32 BS3_FAR_DATA Bs3Tss32Spare1;
1056	/** The default 64-bit TSS. */
1057	extern X86TSS64 BS3_FAR_DATA Bs3Tss64;
1058	extern X86TSS64 BS3_FAR_DATA Bs3Tss64Spare0;
1059	extern X86TSS64 BS3_FAR_DATA Bs3Tss64Spare1;
1060	extern X86TSS64 BS3_FAR_DATA Bs3Tss64WithIopb;
1061	extern X86TSS32 BS3_FAR_DATA Bs3Tss32WithIopb;
1062	/** Interrupt redirection bitmap used by Bs3Tss32WithIopb. */
1063	extern uint8_t BS3_FAR_DATA Bs3SharedIntRedirBm[32];
1064	/** I/O permission bitmap used by Bs3Tss32WithIopb and Bs3Tss64WithIopb. */
1065	extern uint8_t BS3_FAR_DATA Bs3SharedIobp[8192+2];
1066	/** End of the I/O permission bitmap (exclusive). */
1067	extern uint8_t BS3_FAR_DATA Bs3SharedIobpEnd;
1068	/** 16-bit IDT. */
1069	extern X86DESC BS3_FAR_DATA Bs3Idt16[256];
1070	/** 32-bit IDT. */
1071	extern X86DESC BS3_FAR_DATA Bs3Idt32[256];
1072	/** 64-bit IDT. */
1073	extern X86DESC64 BS3_FAR_DATA Bs3Idt64[256];
1074	/** Structure for the LIDT instruction for loading the 16-bit IDT. */
1075	extern X86XDTR64 BS3_FAR_DATA Bs3Lidt_Idt16;
1076	/** Structure for the LIDT instruction for loading the 32-bit IDT. */
1077	extern X86XDTR64 BS3_FAR_DATA Bs3Lidt_Idt32;
1078	/** Structure for the LIDT instruction for loading the 64-bit IDT. */
1079	extern X86XDTR64 BS3_FAR_DATA Bs3Lidt_Idt64;
1080	/** Structure for the LIDT instruction for loading the real mode interrupt
1081	* vector table. */
1082	extern X86XDTR64 BS3_FAR_DATA Bs3Lidt_Ivt;
1083	/** Structure for the LGDT instruction for loading the current GDT. */
1084	extern X86XDTR64 BS3_FAR_DATA Bs3Lgdt_Gdt;
1085	/** Structure for the LGDT instruction for loading the default GDT. */
1086	extern X86XDTR64 BS3_FAR_DATA Bs3LgdtDef_Gdt;
1087	/** The LDT (all entries are empty, fill in for testing). */
1088	extern X86DESC BS3_FAR_DATA Bs3Ldt[116];
1089	/** The end of the LDT (exclusive). */
1090	extern X86DESC BS3_FAR_DATA Bs3LdtEnd;
1091
1092	/** @} */
1093
1094
1095	/** @name Segment start and end markers, sizes.
1096	* @{ */
1097	/** Start of the BS3TEXT16 segment. */
1098	extern uint8_t BS3_FAR_DATA Bs3Text16_StartOfSegment;
1099	/** End of the BS3TEXT16 segment. */
1100	extern uint8_t BS3_FAR_DATA Bs3Text16_EndOfSegment;
1101	/** The size of the BS3TEXT16 segment. */
1102	extern uint16_t BS3_FAR_DATA Bs3Text16_Size;
1103
1104	/** Start of the BS3SYSTEM16 segment. */
1105	extern uint8_t BS3_FAR_DATA Bs3System16_StartOfSegment;
1106	/** End of the BS3SYSTEM16 segment. */
1107	extern uint8_t BS3_FAR_DATA Bs3System16_EndOfSegment;
1108
1109	/** Start of the BS3DATA16/BS3KIT_GRPNM_DATA16 segment. */
1110	extern uint8_t BS3_FAR_DATA Bs3Data16_StartOfSegment;
1111	/** End of the BS3DATA16/BS3KIT_GRPNM_DATA16 segment. */
1112	extern uint8_t BS3_FAR_DATA Bs3Data16_EndOfSegment;
1113
1114	/** Start of the BS3RMTEXT16 segment. */
1115	extern uint8_t BS3_FAR_DATA Bs3RmText16_StartOfSegment;
1116	/** End of the BS3RMTEXT16 segment. */
1117	extern uint8_t BS3_FAR_DATA Bs3RmText16_EndOfSegment;
1118	/** The size of the BS3RMTEXT16 segment. */
1119	extern uint16_t BS3_FAR_DATA Bs3RmText16_Size;
1120	/** The flat start address of the BS3X0TEXT16 segment. */
1121	extern uint32_t BS3_FAR_DATA Bs3RmText16_FlatAddr;
1122
1123	/** Start of the BS3X0TEXT16 segment. */
1124	extern uint8_t BS3_FAR_DATA Bs3X0Text16_StartOfSegment;
1125	/** End of the BS3X0TEXT16 segment. */
1126	extern uint8_t BS3_FAR_DATA Bs3X0Text16_EndOfSegment;
1127	/** The size of the BS3X0TEXT16 segment. */
1128	extern uint16_t BS3_FAR_DATA Bs3X0Text16_Size;
1129	/** The flat start address of the BS3X0TEXT16 segment. */
1130	extern uint32_t BS3_FAR_DATA Bs3X0Text16_FlatAddr;
1131
1132	/** Start of the BS3X1TEXT16 segment. */
1133	extern uint8_t BS3_FAR_DATA Bs3X1Text16_StartOfSegment;
1134	/** End of the BS3X1TEXT16 segment. */
1135	extern uint8_t BS3_FAR_DATA Bs3X1Text16_EndOfSegment;
1136	/** The size of the BS3X1TEXT16 segment. */
1137	extern uint16_t BS3_FAR_DATA Bs3X1Text16_Size;
1138	/** The flat start address of the BS3X1TEXT16 segment. */
1139	extern uint32_t BS3_FAR_DATA Bs3X1Text16_FlatAddr;
1140
1141	/** Start of the BS3TEXT32 segment. */
1142	extern uint8_t BS3_FAR_DATA Bs3Text32_StartOfSegment;
1143	/** Start of the BS3TEXT32 segment. */
1144	extern uint8_t BS3_FAR_DATA Bs3Text32_EndOfSegment;
1145
1146	/** Start of the BS3DATA32 segment. */
1147	extern uint8_t BS3_FAR_DATA Bs3Data32_StartOfSegment;
1148	/** Start of the BS3DATA32 segment. */
1149	extern uint8_t BS3_FAR_DATA Bs3Data32_EndOfSegment;
1150
1151	/** Start of the BS3TEXT64 segment. */
1152	extern uint8_t BS3_FAR_DATA Bs3Text64_StartOfSegment;
1153	/** Start of the BS3TEXT64 segment. */
1154	extern uint8_t BS3_FAR_DATA Bs3Text64_EndOfSegment;
1155
1156	/** Start of the BS3DATA64 segment. */
1157	extern uint8_t BS3_FAR_DATA Bs3Data64_StartOfSegment;
1158	/** Start of the BS3DATA64 segment. */
1159	extern uint8_t BS3_FAR_DATA Bs3Data64_EndOfSegment;
1160
1161	/** The size of the Data16, Text32, Text64, Data32 and Data64 blob. */
1162	extern uint32_t BS3_FAR_DATA Bs3Data16Thru64Text32And64_TotalSize;
1163	/** The total image size (from Text16 thu Data64). */
1164	extern uint32_t BS3_FAR_DATA Bs3TotalImageSize;
1165	/** @} */
1166
1167
1168	/** Lower case hex digits. */
1169	extern char const g_achBs3HexDigits[16+1];
1170	/** Upper case hex digits. */
1171	extern char const g_achBs3HexDigitsUpper[16+1];
1172
1173
1174	/** The current mode (BS3_MODE_XXX) of CPU \#0. */
1175	extern uint8_t g_bBs3CurrentMode;
1176
1177	/** Hint for 16-bit trap handlers regarding the high word of EIP. */
1178	extern uint32_t g_uBs3TrapEipHint;
1179
1180	/** Set to disable special V8086 \#GP and \#UD handling in Bs3TrapDefaultHandler.
1181	* This is useful for getting */
1182	extern bool volatile g_fBs3TrapNoV86Assist;
1183
1184	/** Copy of the original real-mode interrupt vector table. */
1185	extern RTFAR16 g_aBs3RmIvtOriginal[256];
1186
1187
1188	#ifdef __WATCOMC__
1189	/**
1190	* Executes the SMSW instruction and returns the value.
1191	*
1192	* @returns Machine status word.
1193	*/
1194	uint16_t Bs3AsmSmsw(void);
1195	# pragma aux Bs3AsmSmsw = \
1196	".286" \
1197	"smsw ax" \
1198	value [ax] modify exact [ax] nomemory;
1199	#endif
1200
1201
1202	/** @defgroup bs3kit_cross_ptr Cross Context Pointer Type
1203	*
1204	* The cross context pointer type is
1205	*
1206	* @{ */
1207
1208	/**
1209	* Cross context pointer base type.
1210	*/
1211	typedef union BS3XPTR
1212	{
1213	/** The flat pointer. */
1214	uint32_t uFlat;
1215	/** 16-bit view. */
1216	struct
1217	{
1218	uint16_t uLow;
1219	uint16_t uHigh;
1220	} u;
1221	#if ARCH_BITS == 16
1222	/** 16-bit near pointer. */
1223	void __near *pvNear;
1224	#elif ARCH_BITS == 32
1225	/** 32-bit pointer. */
1226	void *pvRaw;
1227	#endif
1228	} BS3XPTR;
1229	AssertCompileSize(BS3XPTR, 4);
1230
1231
1232	/** @def BS3_XPTR_DEF_INTERNAL
1233	* Internal worker.
1234	*
1235	* @param a_Scope RT_NOTHING if structure or global, static or extern
1236	* otherwise.
1237	* @param a_Type The type we're pointing to.
1238	* @param a_Name The member or variable name.
1239	* @internal
1240	*/
1241	#if ARCH_BITS == 16
1242	# define BS3_XPTR_DEF_INTERNAL(a_Scope, a_Type, a_Name) \
1243	a_Scope union \
1244	{ \
1245	BS3XPTR XPtr; \
1246	a_Type __near *pNearTyped; \
1247	} a_Name
1248	#elif ARCH_BITS == 32
1249	# define BS3_XPTR_DEF_INTERNAL(a_Scope, a_Type, a_Name) \
1250	a_Scope union \
1251	{ \
1252	BS3XPTR XPtr; \
1253	a_Type *pTyped; \
1254	} a_Name
1255	#elif ARCH_BITS == 64
1256	# define BS3_XPTR_DEF_INTERNAL(a_Scope, a_Type, a_Name) \
1257	a_Scope union \
1258	{ \
1259	BS3XPTR XPtr; \
1260	} a_Name
1261	#else
1262	# error "ARCH_BITS"
1263	#endif
1264
1265	/** @def BS3_XPTR_MEMBER
1266	* Defines a pointer member that can be shared by all CPU modes.
1267	*
1268	* @param a_Type The type we're pointing to.
1269	* @param a_Name The member or variable name.
1270	*/
1271	#define BS3_XPTR_MEMBER(a_Type, a_Name) BS3_XPTR_DEF_INTERNAL(RT_NOTHING, a_Type, a_Name)
1272
1273	/** @def BS3_XPTR_AUTO
1274	* Defines a pointer static variable for working with an XPTR.
1275	*
1276	* This is typically used to convert flat pointers into context specific
1277	* pointers.
1278	*
1279	* @param a_Type The type we're pointing to.
1280	* @param a_Name The member or variable name.
1281	*/
1282	#define BS3_XPTR_AUTO(a_Type, a_Name) BS3_XPTR_DEF_INTERNAL(RT_NOTHING, a_Type, a_Name)
1283
1284	/** @def BS3_XPTR_SET_FLAT
1285	* Sets a cross context pointer.
1286	*
1287	* @param a_Type The type we're pointing to.
1288	* @param a_Name The member or variable name.
1289	* @param a_uFlatPtr The flat pointer value to assign. If the x-pointer is
1290	* used in real mode, this must be less than 1MB.
1291	* Otherwise the limit is 16MB (due to selector tiling).
1292	*/
1293	#define BS3_XPTR_SET_FLAT(a_Type, a_Name, a_uFlatPtr) \
1294	do { a_Name.XPtr.uFlat = (a_uFlatPtr); } while (0)
1295
1296	/** @def BS3_XPTR_GET_FLAT
1297	* Gets the flat address of a cross context pointer.
1298	*
1299	* @returns 32-bit flat pointer.
1300	* @param a_Type The type we're pointing to.
1301	* @param a_Name The member or variable name.
1302	*/
1303	#define BS3_XPTR_GET_FLAT(a_Type, a_Name) (a_Name.XPtr.uFlat)
1304
1305	/** @def BS3_XPTR_GET_FLAT_LOW
1306	* Gets the low 16 bits of the flat address.
1307	*
1308	* @returns Low 16 bits of the flat pointer.
1309	* @param a_Type The type we're pointing to.
1310	* @param a_Name The member or variable name.
1311	*/
1312	#define BS3_XPTR_GET_FLAT_LOW(a_Type, a_Name) (a_Name.XPtr.u.uLow)
1313
1314
1315	#if ARCH_BITS == 16
1316
1317	/**
1318	* Gets the current ring number.
1319	* @returns Ring number.
1320	*/
1321	DECLINLINE(uint16_t) Bs3Sel16GetCurRing(void);
1322	# pragma aux Bs3Sel16GetCurRing = \
1323	"mov ax, ss" \
1324	"and ax, 3" \
1325	value [ax] modify exact [ax] nomemory;
1326
1327	/**
1328	* Converts the high word of a flat pointer into a 16-bit selector.
1329	*
1330	* This makes use of the tiled area. It also handles real mode.
1331	*
1332	* @returns Segment selector value.
1333	* @param uHigh The high part of flat pointer.
1334	* @sa BS3_XPTR_GET, BS3_XPTR_SET
1335	*/
1336	DECLINLINE(__segment) Bs3Sel16HighFlatPtrToSelector(uint16_t uHigh)
1337	{
1338	if (!BS3_MODE_IS_RM_OR_V86(g_bBs3CurrentMode))
1339	return (__segment)(((uHigh << 3) + BS3_SEL_TILED) \| Bs3Sel16GetCurRing());
1340	return (__segment)(uHigh << 12);
1341	}
1342
1343	#endif /* ARCH_BITS == 16 */
1344
1345	/** @def BS3_XPTR_GET
1346	* Gets the current context pointer value.
1347	*
1348	* @returns Usable pointer.
1349	* @param a_Type The type we're pointing to.
1350	* @param a_Name The member or variable name.
1351	*/
1352	#if ARCH_BITS == 16
1353	# define BS3_XPTR_GET(a_Type, a_Name) \
1354	((a_Type BS3_FAR *)BS3_FP_MAKE(Bs3Sel16HighFlatPtrToSelector((a_Name).XPtr.u.uHigh), (a_Name).pNearTyped))
1355	#elif ARCH_BITS == 32
1356	# define BS3_XPTR_GET(a_Type, a_Name) ((a_Name).pTyped)
1357	#elif ARCH_BITS == 64
1358	# define BS3_XPTR_GET(a_Type, a_Name) ((a_Type *)(uintptr_t)(a_Name).XPtr.uFlat)
1359	#else
1360	# error "ARCH_BITS"
1361	#endif
1362
1363	/** @def BS3_XPTR_SET
1364	* Gets the current context pointer value.
1365	*
1366	* @returns Usable pointer.
1367	* @param a_Type The type we're pointing to.
1368	* @param a_Name The member or variable name.
1369	* @param a_pValue The new pointer value, current context pointer.
1370	*/
1371	#if ARCH_BITS == 16
1372	# define BS3_XPTR_SET(a_Type, a_Name, a_pValue) \
1373	do { \
1374	a_Type BS3_FAR *pTypeCheck = (a_pValue); \
1375	if (BS3_MODE_IS_RM_OR_V86(g_bBs3CurrentMode)) \
1376	(a_Name).XPtr.uFlat = BS3_FP_OFF(pTypeCheck) + ((uint32_t)BS3_FP_SEG(pTypeCheck) << 4); \
1377	else \
1378	{ \
1379	(a_Name).XPtr.u.uLow = BS3_FP_OFF(pTypeCheck); \
1380	(a_Name).XPtr.u.uHigh = ((BS3_FP_SEG(pTypeCheck) & UINT16_C(0xfff8)) - BS3_SEL_TILED) >> 3; \
1381	} \
1382	} while (0)
1383	#elif ARCH_BITS == 32
1384	# define BS3_XPTR_SET(a_Type, a_Name, a_pValue) \
1385	do { (a_Name).pTyped = (a_pValue); } while (0)
1386	#elif ARCH_BITS == 64
1387	# define BS3_XPTR_SET(a_Type, a_Name, a_pValue) \
1388	do { \
1389	a_Type *pTypeCheck = (a_pValue); \
1390	(a_Name).XPtr.uFlat = (uint32_t)(uintptr_t)pTypeCheck; \
1391	} while (0)
1392	#else
1393	# error "ARCH_BITS"
1394	#endif
1395
1396
1397	/** @def BS3_XPTR_IS_NULL
1398	* Checks if the cross context pointer is NULL.
1399	*
1400	* @returns true if NULL, false if not.
1401	* @param a_Type The type we're pointing to.
1402	* @param a_Name The member or variable name.
1403	*/
1404	#define BS3_XPTR_IS_NULL(a_Type, a_Name) ((a_Name).XPtr.uFlat == 0)
1405
1406	/**
1407	* Gets a working pointer from a flat address.
1408	*
1409	* @returns Current context pointer.
1410	* @param uFlatPtr The flat address to convert (32-bit or 64-bit).
1411	*/
1412	DECLINLINE(void BS3_FAR *) Bs3XptrFlatToCurrent(RTCCUINTXREG uFlatPtr)
1413	{
1414	BS3_XPTR_AUTO(void, pTmp);
1415	BS3_XPTR_SET_FLAT(void, pTmp, uFlatPtr);
1416	return BS3_XPTR_GET(void, pTmp);
1417	}
1418
1419	/** @} */
1420
1421
1422
1423	/** @defgroup grp_bs3kit_cmn Common Functions and Data
1424	*
1425	* The common functions comes in three variations: 16-bit, 32-bit and 64-bit.
1426	* Templated code uses the #BS3_CMN_NM macro to mangle the name according to the
1427	* desired
1428	*
1429	* @{
1430	*/
1431
1432	/** @def BS3_CMN_PROTO_INT
1433	* Internal macro for prototyping all the variations of a common function.
1434	* @param a_RetType The return type.
1435	* @param a_Name The function basename.
1436	* @param a_Params The parameter list (in parentheses).
1437	* @sa BS3_CMN_PROTO_STUB, BS3_CMN_PROTO_NOSB
1438	*/
1439	#if ARCH_BITS == 16
1440	# ifndef BS3_USE_ALT_16BIT_TEXT_SEG
1441	# define BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params) \
1442	BS3_DECL_NEAR(a_RetType) BS3_CMN_NM(a_Name) a_Params; \
1443	BS3_DECL_FAR(a_RetType) BS3_CMN_FAR_NM(a_Name) a_Params
1444	# else
1445	# define BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params) \
1446	BS3_DECL_FAR(a_RetType) BS3_CMN_FAR_NM(a_Name) a_Params
1447	# endif
1448	#else
1449	# define BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params) \
1450	BS3_DECL_NEAR(a_RetType) BS3_CMN_NM(a_Name) a_Params
1451	#endif
1452
1453	/** @def BS3_CMN_PROTO_STUB
1454	* Macro for prototyping all the variations of a common function with automatic
1455	* near -> far stub.
1456	*
1457	* @param a_RetType The return type.
1458	* @param a_Name The function basename.
1459	* @param a_Params The parameter list (in parentheses).
1460	* @sa BS3_CMN_PROTO_NOSB
1461	*/
1462	#define BS3_CMN_PROTO_STUB(a_RetType, a_Name, a_Params) BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params)
1463
1464	/** @def BS3_CMN_PROTO_NOSB
1465	* Macro for prototyping all the variations of a common function without any
1466	* near > far stub.
1467	*
1468	* @param a_RetType The return type.
1469	* @param a_Name The function basename.
1470	* @param a_Params The parameter list (in parentheses).
1471	* @sa BS3_CMN_PROTO_STUB
1472	*/
1473	#define BS3_CMN_PROTO_NOSB(a_RetType, a_Name, a_Params) BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params)
1474
1475	/** @def BS3_CMN_PROTO_FARSTUB
1476	* Macro for prototyping all the variations of a common function with automatic
1477	* far -> near stub.
1478	*
1479	* @param a_cbParam16 The size of the 16-bit parameter list in bytes.
1480	* @param a_RetType The return type.
1481	* @param a_Name The function basename.
1482	* @param a_Params The parameter list (in parentheses).
1483	* @sa BS3_CMN_PROTO_STUB
1484	*/
1485	#define BS3_CMN_PROTO_FARSTUB(a_cbParam16, a_RetType, a_Name, a_Params) BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params)
1486
1487
1488	/** @def BS3_CMN_DEF
1489	* Macro for defining a common function.
1490	*
1491	* This makes 16-bit common function far, while 32-bit and 64-bit are near.
1492	*
1493	* @param a_RetType The return type.
1494	* @param a_Name The function basename.
1495	* @param a_Params The parameter list (in parentheses).
1496	*/
1497	#if ARCH_BITS == 16
1498	# define BS3_CMN_DEF(a_RetType, a_Name, a_Params) \
1499	BS3_DECL_FAR(a_RetType) BS3_CMN_FAR_NM(a_Name) a_Params
1500	#else
1501	# define BS3_CMN_DEF(a_RetType, a_Name, a_Params) \
1502	BS3_DECL_NEAR(a_RetType) BS3_CMN_NM(a_Name) a_Params
1503	#endif
1504
1505	/** @def BS3_ASSERT
1506	* Assert that an expression is true.
1507	*
1508	* Calls Bs3Panic if false and it's a strict build. Does nothing in
1509	* non-strict builds. */
1510	#ifdef BS3_STRICT
1511	# define BS3_ASSERT(a_Expr) do { if (!!(a_Expr)) { /* likely / } else { Bs3Panic(); } } while (0) /< @todo later /
1512	#else
1513	# define BS3_ASSERT(a_Expr) do { } while (0)
1514	#endif
1515
1516	/**
1517	* Panic, never return.
1518	*
1519	* The current implementation will only halt the CPU.
1520	*/
1521	BS3_CMN_PROTO_NOSB(DECL_NO_RETURN(void), Bs3Panic,(void));
1522	#if !defined(BS3_KIT_WITH_NO_RETURN) && defined(__WATCOMC__)
1523	# pragma aux Bs3Panic_c16 __aborts
1524	# pragma aux Bs3Panic_f16 __aborts
1525	# pragma aux Bs3Panic_c32 __aborts
1526	#endif
1527
1528
1529	/**
1530	* Translate a mode into a string.
1531	*
1532	* @returns Pointer to read-only mode name string.
1533	* @param bMode The mode value (BS3_MODE_XXX).
1534	*/
1535	BS3_CMN_PROTO_STUB(const char BS3_FAR *, Bs3GetModeName,(uint8_t bMode));
1536
1537	/**
1538	* Translate a mode into a short lower case string.
1539	*
1540	* @returns Pointer to read-only short mode name string.
1541	* @param bMode The mode value (BS3_MODE_XXX).
1542	*/
1543	BS3_CMN_PROTO_STUB(const char BS3_FAR *, Bs3GetModeNameShortLower,(uint8_t bMode));
1544
1545	/** CPU vendors. */
1546	typedef enum BS3CPUVENDOR
1547	{
1548	BS3CPUVENDOR_INVALID = 0,
1549	BS3CPUVENDOR_INTEL,
1550	BS3CPUVENDOR_AMD,
1551	BS3CPUVENDOR_VIA,
1552	BS3CPUVENDOR_CYRIX,
1553	BS3CPUVENDOR_SHANGHAI,
1554	BS3CPUVENDOR_HYGON,
1555	BS3CPUVENDOR_UNKNOWN,
1556	BS3CPUVENDOR_END
1557	} BS3CPUVENDOR;
1558
1559	/**
1560	* Tries to detect the CPU vendor.
1561	*
1562	* @returns CPU vendor.
1563	*/
1564	BS3_CMN_PROTO_STUB(BS3CPUVENDOR, Bs3GetCpuVendor,(void));
1565
1566	/**
1567	* Shutdown the system, never returns.
1568	*
1569	* This currently only works for VMs. When running on real systems it will
1570	* just halt the CPU.
1571	*/
1572	BS3_CMN_PROTO_NOSB(void, Bs3Shutdown,(void));
1573
1574	/**
1575	* Prints a 32-bit unsigned value as decimal to the screen.
1576	*
1577	* @param uValue The 32-bit value.
1578	*/
1579	BS3_CMN_PROTO_NOSB(void, Bs3PrintU32,(uint32_t uValue));
1580
1581	/**
1582	* Prints a 32-bit unsigned value as hex to the screen.
1583	*
1584	* @param uValue The 32-bit value.
1585	*/
1586	BS3_CMN_PROTO_NOSB(void, Bs3PrintX32,(uint32_t uValue));
1587
1588	/**
1589	* Formats and prints a string to the screen.
1590	*
1591	* See #Bs3StrFormatV for supported format types.
1592	*
1593	* @param pszFormat The format string.
1594	* @param ... Format arguments.
1595	*/
1596	BS3_CMN_PROTO_STUB(size_t, Bs3Printf,(const char BS3_FAR *pszFormat, ...));
1597
1598	/**
1599	* Formats and prints a string to the screen, va_list version.
1600	*
1601	* See #Bs3StrFormatV for supported format types.
1602	*
1603	* @param pszFormat The format string.
1604	* @param va Format arguments.
1605	*/
1606	BS3_CMN_PROTO_STUB(size_t, Bs3PrintfV,(const char BS3_FAR *pszFormat, va_list BS3_FAR va));
1607
1608	/**
1609	* Prints a string to the screen.
1610	*
1611	* @param pszString The string to print.
1612	*/
1613	BS3_CMN_PROTO_STUB(void, Bs3PrintStr,(const char BS3_FAR *pszString));
1614
1615	/**
1616	* Prints a string to the screen.
1617	*
1618	* @param pszString The string to print. Any terminator charss will be printed.
1619	* @param cchString The exact number of characters to print.
1620	*/
1621	BS3_CMN_PROTO_NOSB(void, Bs3PrintStrN,(const char BS3_FAR *pszString, size_t cchString));
1622
1623	/**
1624	* Prints a char to the screen.
1625	*
1626	* @param ch The character to print.
1627	*/
1628	BS3_CMN_PROTO_NOSB(void, Bs3PrintChr,(char ch));
1629
1630
1631	/**
1632	* An output function for #Bs3StrFormatV.
1633	*
1634	* @returns Number of characters written.
1635	* @param ch The character to write. Zero in the final call.
1636	* @param pvUser User argument supplied to #Bs3StrFormatV.
1637	*/
1638	typedef BS3_DECL_CALLBACK(size_t) FNBS3STRFORMATOUTPUT(char ch, void BS3_FAR *pvUser);
1639	/** Pointer to an output function for #Bs3StrFormatV. */
1640	typedef FNBS3STRFORMATOUTPUT *PFNBS3STRFORMATOUTPUT;
1641
1642	/**
1643	* Formats a string, sending the output to @a pfnOutput.
1644	*
1645	* Supported types:
1646	* - %RI8, %RI16, %RI32, %RI64
1647	* - %RU8, %RU16, %RU32, %RU64
1648	* - %RX8, %RX16, %RX32, %RX64
1649	* - %i, %d
1650	* - %u
1651	* - %x
1652	* - %c
1653	* - %p (far pointer)
1654	* - %s (far pointer)
1655	*
1656	* @returns Sum of @a pfnOutput return values.
1657	* @param pszFormat The format string.
1658	* @param va Format arguments.
1659	* @param pfnOutput The output function.
1660	* @param pvUser The user argument for the output function.
1661	*/
1662	BS3_CMN_PROTO_STUB(size_t, Bs3StrFormatV,(const char BS3_FAR *pszFormat, va_list BS3_FAR va,
1663	PFNBS3STRFORMATOUTPUT pfnOutput, void BS3_FAR *pvUser));
1664
1665	/**
1666	* Formats a string into a buffer.
1667	*
1668	* See #Bs3StrFormatV for supported format types.
1669	*
1670	* @returns The length of the formatted string (excluding terminator).
1671	* This will be higher or equal to @c cbBuf in case of an overflow.
1672	* @param pszBuf The output buffer.
1673	* @param cbBuf The size of the output buffer.
1674	* @param pszFormat The format string.
1675	* @param va Format arguments.
1676	*/
1677	BS3_CMN_PROTO_STUB(size_t, Bs3StrPrintfV,(char BS3_FAR pszBuf, size_t cbBuf, const char BS3_FAR pszFormat, va_list BS3_FAR va));
1678
1679	/**
1680	* Formats a string into a buffer.
1681	*
1682	* See #Bs3StrFormatV for supported format types.
1683	*
1684	* @returns The length of the formatted string (excluding terminator).
1685	* This will be higher or equal to @c cbBuf in case of an overflow.
1686	* @param pszBuf The output buffer.
1687	* @param cbBuf The size of the output buffer.
1688	* @param pszFormat The format string.
1689	* @param ... Format arguments.
1690	*/
1691	BS3_CMN_PROTO_STUB(size_t, Bs3StrPrintf,(char BS3_FAR pszBuf, size_t cbBuf, const char BS3_FAR pszFormat, ...));
1692
1693
1694	/**
1695	* Finds the length of a zero terminated string.
1696	*
1697	* @returns String length in chars/bytes.
1698	* @param pszString The string to examine.
1699	*/
1700	BS3_CMN_PROTO_STUB(size_t, Bs3StrLen,(const char BS3_FAR *pszString));
1701
1702	/**
1703	* Finds the length of a zero terminated string, but with a max length.
1704	*
1705	* @returns String length in chars/bytes, or @a cchMax if no zero-terminator
1706	* was found before we reached the limit.
1707	* @param pszString The string to examine.
1708	* @param cchMax The max length to examine.
1709	*/
1710	BS3_CMN_PROTO_STUB(size_t, Bs3StrNLen,(const char BS3_FAR *pszString, size_t cchMax));
1711
1712	/**
1713	* CRT style unsafe strcpy.
1714	*
1715	* @returns pszDst.
1716	* @param pszDst The destination buffer. Must be large enough to
1717	* hold the source string.
1718	* @param pszSrc The source string.
1719	*/
1720	BS3_CMN_PROTO_STUB(char BS3_FAR , Bs3StrCpy,(char BS3_FAR pszDst, const char BS3_FAR *pszSrc));
1721
1722	/**
1723	* CRT style memcpy.
1724	*
1725	* @returns pvDst
1726	* @param pvDst The destination buffer.
1727	* @param pvSrc The source buffer.
1728	* @param cbToCopy The number of bytes to copy.
1729	*/
1730	BS3_CMN_PROTO_STUB(void BS3_FAR , Bs3MemCpy,(void BS3_FAR pvDst, const void BS3_FAR *pvSrc, size_t cbToCopy));
1731
1732	/**
1733	* GNU (?) style mempcpy.
1734	*
1735	* @returns pvDst + cbCopy
1736	* @param pvDst The destination buffer.
1737	* @param pvSrc The source buffer.
1738	* @param cbToCopy The number of bytes to copy.
1739	*/
1740	BS3_CMN_PROTO_STUB(void BS3_FAR , Bs3MemPCpy,(void BS3_FAR pvDst, const void BS3_FAR *pvSrc, size_t cbToCopy));
1741
1742	/**
1743	* CRT style memmove (overlapping buffers is fine).
1744	*
1745	* @returns pvDst
1746	* @param pvDst The destination buffer.
1747	* @param pvSrc The source buffer.
1748	* @param cbToCopy The number of bytes to copy.
1749	*/
1750	BS3_CMN_PROTO_STUB(void BS3_FAR , Bs3MemMove,(void BS3_FAR pvDst, const void BS3_FAR *pvSrc, size_t cbToCopy));
1751
1752	/**
1753	* BSD style bzero.
1754	*
1755	* @param pvDst The buffer to be zeroed.
1756	* @param cbDst The number of bytes to zero.
1757	*/
1758	BS3_CMN_PROTO_NOSB(void, Bs3MemZero,(void BS3_FAR *pvDst, size_t cbDst));
1759
1760	/**
1761	* CRT style memset.
1762	*
1763	* @param pvDst The buffer to be fill.
1764	* @param bFiller The filler byte.
1765	* @param cbDst The number of bytes to fill.
1766	*/
1767	BS3_CMN_PROTO_NOSB(void, Bs3MemSet,(void BS3_FAR *pvDst, uint8_t bFiller, size_t cbDst));
1768
1769	/**
1770	* CRT style memchr.
1771	*
1772	* @param pvHaystack The memory to scan for @a bNeedle.
1773	* @param bNeedle The byte to search for.
1774	* @param cbHaystack The amount of memory to search.
1775	*/
1776	BS3_CMN_PROTO_NOSB(void BS3_FAR , Bs3MemChr,(void const BS3_FAR pvHaystack, uint8_t bNeedle, size_t cbHaystack));
1777
1778	/**
1779	* CRT style memcmp.
1780	*
1781	* @returns 0 if equal. Negative if the left side is 'smaller' than the right
1782	* side, and positive in the other case.
1783	* @param pv1 The left hand memory.
1784	* @param pv2 The right hand memory.
1785	* @param cb The number of bytes to compare.
1786	*/
1787	BS3_CMN_PROTO_NOSB(int, Bs3MemCmp,(void const BS3_FAR pv1, void const BS3_FAR pv2, size_t cb));
1788
1789	BS3_CMN_PROTO_STUB(void, Bs3UInt64Div,(RTUINT64U uDividend, RTUINT64U uDivisor, RTUINT64U BS3_FAR *paQuotientReminder));
1790	BS3_CMN_PROTO_STUB(void, Bs3UInt32Div,(RTUINT32U uDividend, RTUINT32U uDivisor, RTUINT32U BS3_FAR *paQuotientReminder));
1791
1792
1793	/**
1794	* Converts a protected mode 32-bit far pointer to a 32-bit flat address.
1795	*
1796	* @returns 32-bit flat address.
1797	* @param off The segment offset.
1798	* @param uSel The protected mode segment selector.
1799	*/
1800	BS3_CMN_PROTO_STUB(uint32_t, Bs3SelProtFar32ToFlat32,(uint32_t off, uint16_t uSel));
1801
1802	/**
1803	* Converts a current mode 32-bit far pointer to a 32-bit flat address.
1804	*
1805	* @returns 32-bit flat address.
1806	* @param off The segment offset.
1807	* @param uSel The current mode segment selector.
1808	*/
1809	BS3_CMN_PROTO_STUB(uint32_t, Bs3SelFar32ToFlat32,(uint32_t off, uint16_t uSel));
1810
1811	/**
1812	* Wrapper around Bs3SelFar32ToFlat32 that makes it easier to use in tight
1813	* assembly spots.
1814	*
1815	* @returns 32-bit flat address.
1816	* @param off The segment offset.
1817	* @param uSel The current mode segment selector.
1818	* @remarks All register are preserved, except return.
1819	* @remarks No 20h scratch space required in 64-bit mode.
1820	*/
1821	BS3_CMN_PROTO_FARSTUB(6, uint32_t, Bs3SelFar32ToFlat32NoClobber,(uint32_t off, uint16_t uSel));
1822
1823	/**
1824	* Converts a real mode code segment to a protected mode code segment selector.
1825	*
1826	* @returns protected mode segment selector.
1827	* @param uRealSeg Real mode code segment.
1828	* @remarks All register are preserved, except return and parameter.
1829	*/
1830	BS3_CMN_PROTO_NOSB(uint16_t, Bs3SelRealModeCodeToProtMode,(uint16_t uRealSeg));
1831
1832	/**
1833	* Converts a real mode code segment to a protected mode code segment selector.
1834	*
1835	* @returns protected mode segment selector.
1836	* @param uProtSel Real mode code segment.
1837	* @remarks All register are preserved, except return and parameter.
1838	*/
1839	BS3_CMN_PROTO_NOSB(uint16_t, Bs3SelProtModeCodeToRealMode,(uint16_t uProtSel));
1840
1841	/**
1842	* Converts a flat code address to a real mode segment and offset.
1843	*
1844	* @returns Far real mode address (high 16-bit is segment, low is offset).
1845	* @param uFlatAddr Flat code address.
1846	* @remarks All register are preserved, except return and parameter.
1847	*/
1848	BS3_CMN_PROTO_NOSB(uint32_t, Bs3SelFlatCodeToRealMode,(uint32_t uFlatAddr));
1849
1850	/**
1851	* Converts a flat code address to a protected mode 16-bit far pointer (ring-0).
1852	*
1853	* @returns Far 16-bit protected mode address (high 16-bit is segment selector,
1854	* low is segment offset).
1855	* @param uFlatAddr Flat code address.
1856	* @remarks All register are preserved, except return and parameter.
1857	*/
1858	BS3_CMN_PROTO_NOSB(uint32_t, Bs3SelFlatCodeToProtFar16,(uint32_t uFlatAddr));
1859
1860	/**
1861	* Converts a far 16:16 real mode (code) address to a flat address.
1862	*
1863	* @returns 32-bit flat address.
1864	* @param uFar1616 Far real mode address (high 16-bit is segment, low
1865	* is offset).
1866	* @remarks All register are preserved, except return.
1867	* @remarks No 20h scratch space required in 64-bit mode.
1868	* @remarks Exactly the same as Bs3SelRealModeDataToFlat, except for param.
1869	*/
1870	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelRealModeCodeToFlat,(PFNBS3FARADDRCONV uFar1616));
1871
1872	/**
1873	* Converts a flat data address to a real mode segment and offset.
1874	*
1875	* @returns Far real mode address (high 16-bit is segment, low is offset)
1876	* @param uFlatAddr Flat code address.
1877	* @remarks All register are preserved, except return.
1878	* @remarks No 20h scratch space required in 64-bit mode.
1879	*/
1880	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelFlatDataToRealMode,(uint32_t uFlatAddr));
1881
1882	/**
1883	* Converts a flat data address to a real mode segment and offset.
1884	*
1885	* @returns Far 16-bit protected mode address (high 16-bit is segment selector,
1886	* low is segment offset).
1887	* @param uFlatAddr Flat code address.
1888	* @remarks All register are preserved, except return.
1889	* @remarks No 20h scratch space required in 64-bit mode.
1890	*/
1891	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelFlatDataToProtFar16,(uint32_t uFlatAddr));
1892
1893	/**
1894	* Converts a far 16:16 data address to a real mode segment and offset.
1895	*
1896	* @returns Far real mode address (high 16-bit is segment, low is offset)
1897	* @param uFar1616 Far 16-bit protected mode address (high 16-bit is
1898	* segment selector, low is segment offset).
1899	* @remarks All register are preserved, except return.
1900	* @remarks No 20h scratch space required in 64-bit mode.
1901	*/
1902	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelProtFar16DataToRealMode,(uint32_t uFar1616));
1903
1904	/**
1905	* Converts a far 16:16 real mode address to a 16-bit protected mode address.
1906	*
1907	* @returns Far real mode address (high 16-bit is segment, low is offset)
1908	* @param uFar1616 Far real mode address (high 16-bit is segment, low
1909	* is offset).
1910	* @remarks All register are preserved, except return.
1911	* @remarks No 20h scratch space required in 64-bit mode.
1912	*/
1913	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelRealModeDataToProtFar16,(uint32_t uFar1616));
1914
1915	/**
1916	* Converts a far 16:16 data address to a flat 32-bit address.
1917	*
1918	* @returns 32-bit flat address.
1919	* @param uFar1616 Far 16-bit protected mode address (high 16-bit is
1920	* segment selector, low is segment offset).
1921	* @remarks All register are preserved, except return.
1922	* @remarks No 20h scratch space required in 64-bit mode.
1923	*/
1924	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelProtFar16DataToFlat,(uint32_t uFar1616));
1925
1926	/**
1927	* Converts a far 16:16 real mode address to a flat address.
1928	*
1929	* @returns 32-bit flat address.
1930	* @param uFar1616 Far real mode address (high 16-bit is segment, low
1931	* is offset).
1932	* @remarks All register are preserved, except return.
1933	* @remarks No 20h scratch space required in 64-bit mode.
1934	*/
1935	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelRealModeDataToFlat,(uint32_t uFar1616));
1936
1937	/**
1938	* Converts a link-time pointer to a current context pointer.
1939	*
1940	* @returns Converted pointer.
1941	* @param pvLnkPtr The pointer the linker produced.
1942	*/
1943	BS3_CMN_PROTO_FARSTUB(4, void BS3_FAR , Bs3SelLnkPtrToCurPtr,(void BS3_FAR pvLnkPtr));
1944
1945	/**
1946	* Gets a flat address from a working poitner.
1947	*
1948	* @returns flat address (32-bit or 64-bit).
1949	* @param pv Current context pointer.
1950	*/
1951	DECLINLINE(RTCCUINTXREG) Bs3SelPtrToFlat(void BS3_FAR *pv)
1952	{
1953	#if ARCH_BITS == 16
1954	return BS3_CMN_FN_NM(Bs3SelFar32ToFlat32)(BS3_FP_OFF(pv), BS3_FP_SEG(pv));
1955	#else
1956	return (uintptr_t)pv;
1957	#endif
1958	}
1959
1960	/**
1961	* Sets up a 16-bit read-write data selector with ring-3 access and 64KB limit.
1962	*
1963	* @param pDesc Pointer to the descriptor table entry.
1964	* @param uBaseAddr The base address of the descriptor.
1965	*/
1966	BS3_CMN_PROTO_STUB(void, Bs3SelSetup16BitData,(X86DESC BS3_FAR *pDesc, uint32_t uBaseAddr));
1967
1968	/**
1969	* Sets up a 16-bit execute-read selector with a 64KB limit.
1970	*
1971	* @param pDesc Pointer to the descriptor table entry.
1972	* @param uBaseAddr The base address of the descriptor.
1973	* @param bDpl The descriptor privilege level.
1974	*/
1975	BS3_CMN_PROTO_STUB(void, Bs3SelSetup16BitCode,(X86DESC BS3_FAR *pDesc, uint32_t uBaseAddr, uint8_t bDpl));
1976
1977	/**
1978	* Sets up a 32-bit execute-read selector with a user specified limit.
1979	*
1980	* @param pDesc Pointer to the descriptor table entry.
1981	* @param uBaseAddr The base address of the descriptor.
1982	* @param uLimit The limit. (This is included here and not in the 16-bit
1983	* functions because we're more likely to want to set it
1984	* than for 16-bit selectors.)
1985	* @param bDpl The descriptor privilege level.
1986	*/
1987	BS3_CMN_PROTO_STUB(void, Bs3SelSetup32BitCode,(X86DESC BS3_FAR *pDesc, uint32_t uBaseAddr, uint32_t uLimit, uint8_t bDpl));
1988
1989
1990	/**
1991	* Slab control structure list head.
1992	*
1993	* The slabs on the list must all have the same chunk size.
1994	*/
1995	typedef struct BS3SLABHEAD
1996	{
1997	/** Pointer to the first slab. */
1998	BS3_XPTR_MEMBER(struct BS3SLABCTL, pFirst);
1999	/** The allocation chunk size. */
2000	uint16_t cbChunk;
2001	/** Number of slabs in the list. */
2002	uint16_t cSlabs;
2003	/** Number of chunks in the list. */
2004	uint32_t cChunks;
2005	/** Number of free chunks. */
2006	uint32_t cFreeChunks;
2007	} BS3SLABHEAD;
2008	AssertCompileSize(BS3SLABHEAD, 16);
2009	/** Pointer to a slab list head. */
2010	typedef BS3SLABHEAD BS3_FAR *PBS3SLABHEAD;
2011
2012	/**
2013	* Allocation slab control structure.
2014	*
2015	* This may live at the start of the slab for 4KB slabs, while in a separate
2016	* static location for the larger ones.
2017	*/
2018	typedef struct BS3SLABCTL
2019	{
2020	/** Pointer to the next slab control structure in this list. */
2021	BS3_XPTR_MEMBER(struct BS3SLABCTL, pNext);
2022	/** Pointer to the slab list head. */
2023	BS3_XPTR_MEMBER(BS3SLABHEAD, pHead);
2024	/** The base address of the slab. */
2025	BS3_XPTR_MEMBER(uint8_t, pbStart);
2026	/** Number of chunks in this slab. */
2027	uint16_t cChunks;
2028	/** Number of currently free chunks. */
2029	uint16_t cFreeChunks;
2030	/** The chunk size. */
2031	uint16_t cbChunk;
2032	/** The shift count corresponding to cbChunk.
2033	* This is for turning a chunk number into a byte offset and vice versa. */
2034	uint16_t cChunkShift;
2035	/** Bitmap where set bits indicates allocated blocks (variable size,
2036	* multiple of 4). */
2037	uint8_t bmAllocated[4];
2038	} BS3SLABCTL;
2039	/** Pointer to a bs3kit slab control structure. */
2040	typedef BS3SLABCTL BS3_FAR *PBS3SLABCTL;
2041
2042	/** The chunks must all be in the same 16-bit segment tile. */
2043	#define BS3_SLAB_ALLOC_F_SAME_TILE UINT16_C(0x0001)
2044
2045	/**
2046	* Initializes a slab.
2047	*
2048	* @param pSlabCtl The slab control structure to initialize.
2049	* @param cbSlabCtl The size of the slab control structure.
2050	* @param uFlatSlabPtr The base address of the slab.
2051	* @param cbSlab The size of the slab.
2052	* @param cbChunk The chunk size.
2053	*/
2054	BS3_CMN_PROTO_STUB(void, Bs3SlabInit,(PBS3SLABCTL pSlabCtl, size_t cbSlabCtl, uint32_t uFlatSlabPtr,
2055	uint32_t cbSlab, uint16_t cbChunk));
2056
2057	/**
2058	* Allocates one chunk from a slab.
2059	*
2060	* @returns Pointer to a chunk on success, NULL if we're out of chunks.
2061	* @param pSlabCtl The slab control structure to allocate from.
2062	*/
2063	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3SlabAlloc,(PBS3SLABCTL pSlabCtl));
2064
2065	/**
2066	* Allocates one or more chunks rom a slab.
2067	*
2068	* @returns Pointer to the request number of chunks on success, NULL if we're
2069	* out of chunks.
2070	* @param pSlabCtl The slab control structure to allocate from.
2071	* @param cChunks The number of contiguous chunks we want.
2072	* @param fFlags Flags, see BS3_SLAB_ALLOC_F_XXX
2073	*/
2074	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3SlabAllocEx,(PBS3SLABCTL pSlabCtl, uint16_t cChunks, uint16_t fFlags));
2075
2076	/**
2077	* Frees one or more chunks from a slab.
2078	*
2079	* @returns Number of chunks actually freed. When correctly used, this will
2080	* match the @a cChunks parameter, of course.
2081	* @param pSlabCtl The slab control structure to free from.
2082	* @param uFlatChunkPtr The flat address of the chunks to free.
2083	* @param cChunks The number of contiguous chunks to free.
2084	*/
2085	BS3_CMN_PROTO_STUB(uint16_t, Bs3SlabFree,(PBS3SLABCTL pSlabCtl, uint32_t uFlatChunkPtr, uint16_t cChunks));
2086
2087
2088	/**
2089	* Initializes the given slab list head.
2090	*
2091	* @param pHead The slab list head.
2092	* @param cbChunk The chunk size.
2093	*/
2094	BS3_CMN_PROTO_STUB(void, Bs3SlabListInit,(PBS3SLABHEAD pHead, uint16_t cbChunk));
2095
2096	/**
2097	* Adds an initialized slab control structure to the list.
2098	*
2099	* @param pHead The slab list head to add it to.
2100	* @param pSlabCtl The slab control structure to add.
2101	*/
2102	BS3_CMN_PROTO_STUB(void, Bs3SlabListAdd,(PBS3SLABHEAD pHead, PBS3SLABCTL pSlabCtl));
2103
2104	/**
2105	* Allocates one chunk.
2106	*
2107	* @returns Pointer to a chunk on success, NULL if we're out of chunks.
2108	* @param pHead The slab list to allocate from.
2109	*/
2110	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3SlabListAlloc,(PBS3SLABHEAD pHead));
2111
2112	/**
2113	* Allocates one or more chunks.
2114	*
2115	* @returns Pointer to the request number of chunks on success, NULL if we're
2116	* out of chunks.
2117	* @param pHead The slab list to allocate from.
2118	* @param cChunks The number of contiguous chunks we want.
2119	* @param fFlags Flags, see BS3_SLAB_ALLOC_F_XXX
2120	*/
2121	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3SlabListAllocEx,(PBS3SLABHEAD pHead, uint16_t cChunks, uint16_t fFlags));
2122
2123	/**
2124	* Frees one or more chunks from a slab list.
2125	*
2126	* @param pHead The slab list to allocate from.
2127	* @param pvChunks Pointer to the first chunk to free.
2128	* @param cChunks The number of contiguous chunks to free.
2129	*/
2130	BS3_CMN_PROTO_STUB(void, Bs3SlabListFree,(PBS3SLABHEAD pHead, void BS3_FAR *pvChunks, uint16_t cChunks));
2131
2132	/**
2133	* Allocation addressing constraints.
2134	*/
2135	typedef enum BS3MEMKIND
2136	{
2137	/** Invalid zero type. */
2138	BS3MEMKIND_INVALID = 0,
2139	/** Real mode addressable memory. */
2140	BS3MEMKIND_REAL,
2141	/** Memory addressable using the 16-bit protected mode tiling. */
2142	BS3MEMKIND_TILED,
2143	/** Memory addressable using 32-bit flat addressing. */
2144	BS3MEMKIND_FLAT32,
2145	/** Memory addressable using 64-bit flat addressing. */
2146	BS3MEMKIND_FLAT64,
2147	/** End of valid types. */
2148	BS3MEMKIND_END,
2149	} BS3MEMKIND;
2150
2151	/**
2152	* Allocates low memory.
2153	*
2154	* @returns Pointer to a chunk on success, NULL if we're out of chunks.
2155	* @param enmKind The kind of addressing constraints imposed on the
2156	* allocation.
2157	* @param cb How much to allocate. Must be 4KB or less.
2158	*/
2159	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3MemAlloc,(BS3MEMKIND enmKind, size_t cb));
2160
2161	/**
2162	* Allocates zero'ed memory.
2163	*
2164	* @param enmKind The kind of addressing constraints imposed on the
2165	* allocation.
2166	* @param cb How much to allocate. Must be 4KB or less.
2167	*/
2168	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3MemAllocZ,(BS3MEMKIND enmKind, size_t cb));
2169
2170	/**
2171	* Frees memory.
2172	*
2173	* @returns Pointer to a chunk on success, NULL if we're out of chunks.
2174	* @param pv The memory to free (returned by #Bs3MemAlloc).
2175	* @param cb The size of the allocation.
2176	*/
2177	BS3_CMN_PROTO_STUB(void, Bs3MemFree,(void BS3_FAR *pv, size_t cb));
2178
2179	/**
2180	* Allocates a page with non-present pages on each side.
2181	*
2182	* @returns Pointer to the usable page. NULL on failure. Use
2183	* Bs3MemGuardedTestPageFree to free the allocation.
2184	* @param enmKind The kind of addressing constraints imposed on the
2185	* allocation.
2186	*/
2187	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3MemGuardedTestPageAlloc,(BS3MEMKIND enmKind));
2188
2189	/**
2190	* Allocates a page with pages on each side to the @a fPte specification.
2191	*
2192	* @returns Pointer to the usable page. NULL on failure. Use
2193	* Bs3MemGuardedTestPageFree to free the allocation.
2194	* @param enmKind The kind of addressing constraints imposed on the
2195	* allocation.
2196	* @param fPte The page table entry specification for the guard pages.
2197	*/
2198	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3MemGuardedTestPageAllocEx,(BS3MEMKIND enmKind, uint64_t fPte));
2199
2200	/**
2201	* Frees guarded page allocated by Bs3MemGuardedTestPageAlloc or
2202	* Bs3MemGuardedTestPageAllocEx.
2203	*
2204	* @param pvGuardedPage Pointer returned by Bs3MemGuardedTestPageAlloc or
2205	* Bs3MemGuardedTestPageAllocEx. NULL is ignored.
2206	*/
2207	BS3_CMN_PROTO_STUB(void, Bs3MemGuardedTestPageFree,(void BS3_FAR *pvGuardedPage));
2208
2209	/**
2210	* Print all heap info.
2211	*/
2212	BS3_CMN_PROTO_STUB(void, Bs3MemPrintInfo, (void));
2213
2214	/** The end RAM address below 4GB (approximately). */
2215	extern uint32_t g_uBs3EndOfRamBelow4G;
2216	/** The end RAM address above 4GB, zero if no memory above 4GB. */
2217	extern uint64_t g_uBs3EndOfRamAbove4G;
2218
2219
2220	/**
2221	* Enables the A20 gate.
2222	*/
2223	BS3_CMN_PROTO_NOSB(void, Bs3A20Enable,(void));
2224
2225	/**
2226	* Enables the A20 gate via the keyboard controller
2227	*/
2228	BS3_CMN_PROTO_NOSB(void, Bs3A20EnableViaKbd,(void));
2229
2230	/**
2231	* Enables the A20 gate via the PS/2 control port A.
2232	*/
2233	BS3_CMN_PROTO_NOSB(void, Bs3A20EnableViaPortA,(void));
2234
2235	/**
2236	* Disables the A20 gate.
2237	*/
2238	BS3_CMN_PROTO_NOSB(void, Bs3A20Disable,(void));
2239
2240	/**
2241	* Disables the A20 gate via the keyboard controller
2242	*/
2243	BS3_CMN_PROTO_NOSB(void, Bs3A20DisableViaKbd,(void));
2244
2245	/**
2246	* Disables the A20 gate via the PS/2 control port A.
2247	*/
2248	BS3_CMN_PROTO_NOSB(void, Bs3A20DisableViaPortA,(void));
2249
2250
2251	/**
2252	* Initializes root page tables for page protected mode (PP16, PP32).
2253	*
2254	* @returns IPRT status code.
2255	* @remarks Must not be called in real-mode!
2256	*/
2257	BS3_CMN_PROTO_STUB(int, Bs3PagingInitRootForPP,(void));
2258
2259	/**
2260	* Initializes root page tables for PAE page protected mode (PAE16, PAE32).
2261	*
2262	* @returns IPRT status code.
2263	* @remarks The default long mode page tables depends on the PAE ones.
2264	* @remarks Must not be called in real-mode!
2265	*/
2266	BS3_CMN_PROTO_STUB(int, Bs3PagingInitRootForPAE,(void));
2267
2268	/**
2269	* Initializes root page tables for long mode (LM16, LM32, LM64).
2270	*
2271	* @returns IPRT status code.
2272	* @remarks The default long mode page tables depends on the PAE ones.
2273	* @remarks Must not be called in real-mode!
2274	*/
2275	BS3_CMN_PROTO_STUB(int, Bs3PagingInitRootForLM,(void));
2276
2277	/**
2278	* Maps all RAM above 4GB into the long mode page tables.
2279	*
2280	* This requires Bs3PagingInitRootForLM to have been called first.
2281	*
2282	* @returns IPRT status code.
2283	* @retval VERR_WRONG_ORDER if Bs3PagingInitRootForLM wasn't called.
2284	* @retval VINF_ALREADY_INITIALIZED if already called or someone mapped
2285	* something else above 4GiB already.
2286	* @retval VERR_OUT_OF_RANGE if too much RAM (more than 2^47 bytes).
2287	* @retval VERR_NO_MEMORY if no more memory for paging structures.
2288	* @retval VERR_UNSUPPORTED_ALIGNMENT if the bs3kit allocator malfunctioned and
2289	* didn't give us page aligned memory as it should.
2290	*
2291	* @param puFailurePoint Where to return the address where we encountered
2292	* a failure. Optional.
2293	*
2294	* @remarks Must be called in 32-bit or 64-bit mode as paging structures will be
2295	* allocated using BS3MEMKIND_FLAT32, as there might not be sufficient
2296	* BS3MEMKIND_TILED memory around. (Also, too it's simply too much of
2297	* a bother to deal with 16-bit for something that's long-mode only.)
2298	*/
2299	BS3_CMN_PROTO_STUB(int, Bs3PagingMapRamAbove4GForLM,(uint64_t *puFailurePoint));
2300
2301	/**
2302	* Modifies the page table protection of an address range.
2303	*
2304	* This only works on the lowest level of the page tables in the current mode.
2305	*
2306	* Since we generally use the largest pages available when setting up the
2307	* initial page tables, this function will usually have to allocate and create
2308	* more tables. This may fail if we're low on memory.
2309	*
2310	* @returns IPRT status code.
2311	* @param uFlat The flat address of the first page in the range (rounded
2312	* down nearest page boundrary).
2313	* @param cb The range size from @a pv (rounded up to nearest page boundrary).
2314	* @param fSet Mask of zero or more X86_PTE_XXX values to set for the range.
2315	* @param fClear Mask of zero or more X86_PTE_XXX values to clear for the range.
2316	*/
2317	BS3_CMN_PROTO_STUB(int, Bs3PagingProtect,(uint64_t uFlat, uint64_t cb, uint64_t fSet, uint64_t fClear));
2318
2319	/**
2320	* Modifies the page table protection of an address range.
2321	*
2322	* This only works on the lowest level of the page tables in the current mode.
2323	*
2324	* Since we generally use the largest pages available when setting up the
2325	* initial page tables, this function will usually have to allocate and create
2326	* more tables. This may fail if we're low on memory.
2327	*
2328	* @returns IPRT status code.
2329	* @param pv The address of the first page in the range (rounded
2330	* down nearest page boundrary).
2331	* @param cb The range size from @a pv (rounded up to nearest page boundrary).
2332	* @param fSet Mask of zero or more X86_PTE_XXX values to set for the range.
2333	* @param fClear Mask of zero or more X86_PTE_XXX values to clear for the range.
2334	*/
2335	BS3_CMN_PROTO_STUB(int, Bs3PagingProtectPtr,(void BS3_FAR *pv, size_t cb, uint64_t fSet, uint64_t fClear));
2336
2337	/**
2338	* Aliases (maps) one or more contiguous physical pages to a virtual range.
2339	*
2340	* @returns VBox status code.
2341	* @retval VERR_INVALID_PARAMETER if we're in legacy paging mode and @a uDst or
2342	* @a uPhysToAlias are not compatible with legacy paging.
2343	* @retval VERR_OUT_OF_RANGE if we cannot traverse the page tables in this mode
2344	* (typically real mode or v86, maybe 16-bit PE).
2345	* @retval VERR_NO_MEMORY if we cannot allocate page tables for splitting up
2346	* the necessary large pages. No aliasing was performed.
2347	*
2348	* @param uDst The virtual address to map it at. Rounded down
2349	* to the nearest page (@a cbHowMuch is adjusted
2350	* up).
2351	* @param uPhysToAlias The physical address of the first page in the
2352	* (contiguous) range to map. Chopped down to
2353	* nearest page boundrary (@a cbHowMuch is not
2354	* adjusted).
2355	* @param cbHowMuch How much to map. Rounded up to nearest page.
2356	* @param fPte The PTE flags.
2357	*/
2358	BS3_CMN_PROTO_STUB(int, Bs3PagingAlias,(uint64_t uDst, uint64_t uPhysToAlias, uint32_t cbHowMuch, uint64_t fPte));
2359
2360	/**
2361	* Unaliases memory, i.e. restores the 1:1 mapping.
2362	*
2363	* @returns VBox status code. Cannot fail if @a uDst and @a cbHowMuch specify
2364	* the range of a successful Bs3PagingAlias call, however it may run
2365	* out of memory if it's breaking new ground.
2366	*
2367	* @param uDst The virtual address to restore to 1:1 mapping.
2368	* Rounded down to the nearest page (@a cbHowMuch
2369	* is adjusted up).
2370	* @param cbHowMuch How much to restore. Rounded up to nearest page.
2371	*/
2372	BS3_CMN_PROTO_STUB(int, Bs3PagingUnalias,(uint64_t uDst, uint32_t cbHowMuch));
2373
2374	/**
2375	* Get the pointer to the PTE for the given address.
2376	*
2377	* @returns Pointer to the PTE.
2378	* @param uFlat The flat address of the page which PTE we want.
2379	* @param prc Where to return additional error info. Optional.
2380	*/
2381	BS3_CMN_PROTO_STUB(void BS3_FAR , Bs3PagingGetPte,(uint64_t uFlat, int prc));
2382
2383	/**
2384	* Paging information for an address.
2385	*/
2386	typedef struct BS3PAGINGINFO4ADDR
2387	{
2388	/** The depth of the system's paging mode.
2389	* This is always 2 for legacy, 3 for PAE and 4 for long mode. */
2390	uint8_t cEntries;
2391	/** The size of the page structures (the entires). */
2392	uint8_t cbEntry;
2393	/** Flags defined for future fun, currently zero. */
2394	uint16_t fFlags;
2395	/** Union display different view on the entry pointers. */
2396	union
2397	{
2398	/** Pointer to the page structure entries, starting with the PTE as 0.
2399	* If large pages are involved, the first entry will be NULL (first two if 1GB
2400	* page). Same if the address is invalid on a higher level. */
2401	uint8_t BS3_FAR *apbEntries[4];
2402	/** Alternative view for legacy mode. */
2403	struct
2404	{
2405	X86PTE BS3_FAR *pPte;
2406	X86PDE BS3_FAR *pPde;
2407	void *pvUnused2;
2408	void *pvUnused3;
2409	} Legacy;
2410	/** Alternative view for PAE and Long mode. */
2411	struct
2412	{
2413	X86PTEPAE BS3_FAR *pPte;
2414	X86PDEPAE BS3_FAR *pPde;
2415	X86PDPE BS3_FAR *pPdpe;
2416	X86PML4E BS3_FAR *pPml4e;
2417	} Pae;
2418	} u;
2419	} BS3PAGINGINFO4ADDR;
2420	/** Pointer to paging information for and address. */
2421	typedef BS3PAGINGINFO4ADDR BS3_FAR *PBS3PAGINGINFO4ADDR;
2422
2423	/**
2424	* Queries paging information about the given virtual address.
2425	*
2426	* @returns VBox status code.
2427	* @param uFlat The flat address to query information about.
2428	* @param pPgInfo Where to return the information.
2429	*/
2430	BS3_CMN_PROTO_STUB(int, Bs3PagingQueryAddressInfo,(uint64_t uFlat, PBS3PAGINGINFO4ADDR pPgInfo));
2431
2432
2433	/** The physical / flat address of the buffer backing the canonical traps.
2434	* This buffer is spread equally on each side of the 64-bit non-canonical
2435	* address divide. Non-64-bit code can use this to setup trick shots and
2436	* inspect their results. */
2437	extern uint32_t g_uBs3PagingCanonicalTrapsAddr;
2438	/** The size of the buffer at g_uPagingCanonicalTraps (both sides). */
2439	extern uint16_t g_cbBs3PagingCanonicalTraps;
2440	/** The size of one trap buffer (low or high).
2441	* This is g_cbBs3PagingCanonicalTraps divided by two. */
2442	extern uint16_t g_cbBs3PagingOneCanonicalTrap;
2443
2444	/**
2445	* Sets up the 64-bit canonical address space trap buffers, if neceessary.
2446	*
2447	* @returns Pointer to the buffers (i.e. the first page of the low one) on
2448	* success. NULL on failure.
2449	*/
2450	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3PagingSetupCanonicalTraps,(void));
2451
2452	/**
2453	* Waits for the keyboard controller to become ready.
2454	*/
2455	BS3_CMN_PROTO_NOSB(void, Bs3KbdWait,(void));
2456
2457	/**
2458	* Sends a read command to the keyboard controller and gets the result.
2459	*
2460	* The caller is responsible for making sure the keyboard controller is ready
2461	* for a command (call #Bs3KbdWait if unsure).
2462	*
2463	* @returns The value read is returned (in al).
2464	* @param bCmd The read command.
2465	*/
2466	BS3_CMN_PROTO_NOSB(uint8_t, Bs3KbdRead,(uint8_t bCmd));
2467
2468	/**
2469	* Sends a write command to the keyboard controller and then sends the data.
2470	*
2471	* The caller is responsible for making sure the keyboard controller is ready
2472	* for a command (call #Bs3KbdWait if unsure).
2473	*
2474	* @param bCmd The write command.
2475	* @param bData The data to write.
2476	*/
2477	BS3_CMN_PROTO_NOSB(void, Bs3KbdWrite,(uint8_t bCmd, uint8_t bData));
2478
2479
2480	/**
2481	* Configures the PIC, once only.
2482	*
2483	* Subsequent calls to this function will not do anything.
2484	*
2485	* The PIC will be programmed to use IDT/IVT vectors 0x70 thru 0x7f, auto
2486	* end-of-interrupt, and all IRQs masked. The individual PIC users will have to
2487	* use #Bs3PicUpdateMask unmask their IRQ once they've got all the handlers
2488	* installed.
2489	*
2490	* @param fForcedReInit Force a reinitialization.
2491	*/
2492	BS3_CMN_PROTO_STUB(void, Bs3PicSetup,(bool fForcedReInit));
2493
2494	/**
2495	* Updates the PIC masks.
2496	*
2497	* @returns The new mask - master in low, slave in high byte.
2498	* @param fAndMask Things to keep as-is. Master in low, slave in high byte.
2499	* @param fOrMask Things to start masking. Ditto wrt bytes.
2500	*/
2501	BS3_CMN_PROTO_STUB(uint16_t, Bs3PicUpdateMask,(uint16_t fAndMask, uint16_t fOrMask));
2502
2503	/**
2504	* Disables all IRQs on the PIC.
2505	*/
2506	BS3_CMN_PROTO_STUB(void, Bs3PicMaskAll,(void));
2507
2508
2509	/**
2510	* Sets up the PIT for periodic callback.
2511	*
2512	* @param cHzDesired The desired Hz. Zero means max interval length
2513	* (18.2Hz). Plase check the various PIT globals for
2514	* the actual interval length.
2515	*/
2516	BS3_CMN_PROTO_STUB(void, Bs3PitSetupAndEnablePeriodTimer,(uint16_t cHzDesired));
2517
2518	/**
2519	* Disables the PIT if active.
2520	*/
2521	BS3_CMN_PROTO_STUB(void, Bs3PitDisable,(void));
2522
2523	/** Nanoseconds (approx) since last the PIT timer was started. */
2524	extern uint64_t volatile g_cBs3PitNs;
2525	/** Milliseconds seconds (very approx) since last the PIT timer was started. */
2526	extern uint64_t volatile g_cBs3PitMs;
2527	/** Number of ticks since last the PIT timer was started. */
2528	extern uint32_t volatile g_cBs3PitTicks;
2529	/** The current interval in nanoseconds.
2530	* This is 0 if not yet started (cleared by Bs3PitDisable). */
2531	extern uint32_t g_cBs3PitIntervalNs;
2532	/** The current interval in milliseconds (approximately).
2533	* This is 0 if not yet started (cleared by Bs3PitDisable). */
2534	extern uint16_t g_cBs3PitIntervalMs;
2535	/** The current PIT frequency (approximately).
2536	* 0 if not yet started (cleared by Bs3PitDisable; used for checking the
2537	* state internally). */
2538	extern uint16_t volatile g_cBs3PitIntervalHz;
2539
2540
2541	/**
2542	* Call 16-bit prot mode function from v8086 mode.
2543	*
2544	* This switches from v8086 mode to 16-bit protected mode (code) and executed
2545	* @a fpfnCall with @a cbParams bytes of parameters pushed on the stack.
2546	* Afterwards it switches back to v8086 mode and returns a 16-bit status code.
2547	*
2548	* @returns 16-bit status code if the function returned anything.
2549	* @param fpfnCall Far real mode pointer to the function to call.
2550	* @param cbParams The size of the parameter list, in bytes.
2551	* @param ... The parameters.
2552	* @sa Bs3SwitchTo32BitAndCallC
2553	*/
2554	BS3_CMN_PROTO_STUB(int, Bs3SwitchFromV86To16BitAndCallC,(FPFNBS3FAR fpfnCall, unsigned cbParams, ...));
2555
2556
2557	/**
2558	* BS3 integer register.
2559	*/
2560	typedef union BS3REG
2561	{
2562	/** 8-bit unsigned integer. */
2563	uint8_t u8;
2564	/** 16-bit unsigned integer. */
2565	uint16_t u16;
2566	/** 32-bit unsigned integer. */
2567	uint32_t u32;
2568	/** 64-bit unsigned integer. */
2569	uint64_t u64;
2570	/** Full unsigned integer. */
2571	uint64_t u;
2572	/** High/low byte view. */
2573	struct
2574	{
2575	uint8_t bLo;
2576	uint8_t bHi;
2577	} b;
2578	/** 8-bit view. */
2579	uint8_t au8[8];
2580	/** 16-bit view. */
2581	uint16_t au16[4];
2582	/** 32-bit view. */
2583	uint32_t au32[2];
2584	/** Unsigned integer, depending on compiler context.
2585	* This generally follows ARCH_BITS. */
2586	RTCCUINTREG uCcReg;
2587	/** Extended unsigned integer, depending on compiler context.
2588	* This is 32-bit in 16-bit and 32-bit compiler contexts, and 64-bit in
2589	* 64-bit. */
2590	RTCCUINTXREG uCcXReg;
2591	} BS3REG;
2592	/** Pointer to an integer register. */
2593	typedef BS3REG BS3_FAR *PBS3REG;
2594	/** Pointer to a const integer register. */
2595	typedef BS3REG const BS3_FAR *PCBS3REG;
2596
2597	/**
2598	* Register context (without FPU).
2599	*/
2600	typedef struct BS3REGCTX
2601	{
2602	BS3REG rax; /*< 0x00 /
2603	BS3REG rcx; /*< 0x08 /
2604	BS3REG rdx; /*< 0x10 /
2605	BS3REG rbx; /*< 0x18 /
2606	BS3REG rsp; /*< 0x20 /
2607	BS3REG rbp; /*< 0x28 /
2608	BS3REG rsi; /*< 0x30 /
2609	BS3REG rdi; /*< 0x38 /
2610	BS3REG r8; /*< 0x40 /
2611	BS3REG r9; /*< 0x48 /
2612	BS3REG r10; /*< 0x50 /
2613	BS3REG r11; /*< 0x58 /
2614	BS3REG r12; /*< 0x60 /
2615	BS3REG r13; /*< 0x68 /
2616	BS3REG r14; /*< 0x70 /
2617	BS3REG r15; /*< 0x78 /
2618	BS3REG rflags; /*< 0x80 /
2619	BS3REG rip; /*< 0x88 /
2620	uint16_t cs; /*< 0x90 /
2621	uint16_t ds; /*< 0x92 /
2622	uint16_t es; /*< 0x94 /
2623	uint16_t fs; /*< 0x96 /
2624	uint16_t gs; /*< 0x98 /
2625	uint16_t ss; /*< 0x9a /
2626	uint16_t tr; /*< 0x9c /
2627	uint16_t ldtr; /*< 0x9e /
2628	uint8_t bMode; /*< 0xa0: BS3_MODE_XXX. /
2629	uint8_t bCpl; /*< 0xa1: 0-3, 0 is used for real mode. /
2630	uint8_t fbFlags; /*< 0xa2: BS3REG_CTX_F_XXX /
2631	uint8_t abPadding[5]; /*< 0xa3 /
2632	BS3REG cr0; /*< 0xa8 /
2633	BS3REG cr2; /*< 0xb0 /
2634	BS3REG cr3; /*< 0xb8 /
2635	BS3REG cr4; /*< 0xc0 /
2636	uint64_t uUnused; /*< 0xc8 /
2637	} BS3REGCTX;
2638	AssertCompileSize(BS3REGCTX, 0xd0);
2639	/** Pointer to a register context. */
2640	typedef BS3REGCTX BS3_FAR *PBS3REGCTX;
2641	/** Pointer to a const register context. */
2642	typedef BS3REGCTX const BS3_FAR *PCBS3REGCTX;
2643
2644	/** @name BS3REG_CTX_F_XXX - BS3REGCTX::fbFlags masks.
2645	* @{ */
2646	/** The CR0 is MSW (only low 16-bit). */
2647	#define BS3REG_CTX_F_NO_CR0_IS_MSW UINT8_C(0x01)
2648	/** No CR2 and CR3 values. Not in CPL 0 or CPU too old for CR2 & CR3. */
2649	#define BS3REG_CTX_F_NO_CR2_CR3 UINT8_C(0x02)
2650	/** No CR4 value. The CPU is too old for CR4. */
2651	#define BS3REG_CTX_F_NO_CR4 UINT8_C(0x04)
2652	/** No TR and LDTR values. Context gathered in real mode or v8086 mode. */
2653	#define BS3REG_CTX_F_NO_TR_LDTR UINT8_C(0x08)
2654	/** The context doesn't have valid values for AMD64 GPR extensions. */
2655	#define BS3REG_CTX_F_NO_AMD64 UINT8_C(0x10)
2656	/** @} */
2657
2658	/**
2659	* Saves the current register context.
2660	*
2661	* @param pRegCtx Where to store the register context.
2662	*/
2663	BS3_CMN_PROTO_NOSB(void, Bs3RegCtxSave,(PBS3REGCTX pRegCtx));
2664
2665	/**
2666	* Switch to the specified CPU bitcount, reserve additional stack and save the
2667	* CPU context.
2668	*
2669	* This is for writing more flexible test drivers that can test more than the
2670	* CPU bitcount (16-bit, 32-bit, 64-bit, and virtual 8086) of the driver itself.
2671	* For instance a 32-bit driver can do V86 and 16-bit testing, thus saving space
2672	* by avoiding duplicate 16-bit driver code.
2673	*
2674	* @param pRegCtx Where to store the register context.
2675	* @param bBitMode Bit mode to switch to, BS3_MODE_CODE_XXX. Only
2676	* BS3_MODE_CODE_MASK is used, other bits are ignored
2677	* to make it possible to pass a full mode value.
2678	* @param cbExtraStack Number of bytes of additional stack to allocate.
2679	*/
2680	BS3_CMN_PROTO_FARSTUB(8, void, Bs3RegCtxSaveEx,(PBS3REGCTX pRegCtx, uint8_t bBitMode, uint16_t cbExtraStack));
2681
2682	/**
2683	* This is Bs3RegCtxSaveEx with automatic Bs3RegCtxConvertV86ToRm thrown in.
2684	*
2685	* This is for simplifying writing 32-bit test drivers that covers real-mode as
2686	* well as virtual 8086, 16-bit, 32-bit, and 64-bit modes.
2687	*
2688	* @param pRegCtx Where to store the register context.
2689	* @param bMode The mode to get a context for. If this isn't
2690	* BS3_MODE_RM, the BS3_MODE_SYS_MASK has to match the
2691	* one of the current mode.
2692	* @param cbExtraStack Number of bytes of additional stack to allocate.
2693	*/
2694	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSaveForMode,(PBS3REGCTX pRegCtx, uint8_t bMode, uint16_t cbExtraStack));
2695
2696	/**
2697	* Transforms a register context to a different ring.
2698	*
2699	* @param pRegCtx The register context.
2700	* @param bRing The target ring (0..3).
2701	*
2702	* @note Do _NOT_ call this for creating real mode or v8086 contexts, because
2703	* it will always output a protected mode context!
2704	*/
2705	BS3_CMN_PROTO_STUB(void, Bs3RegCtxConvertToRingX,(PBS3REGCTX pRegCtx, uint8_t bRing));
2706
2707	/**
2708	* Transforms a V8086 register context to a real mode one.
2709	*
2710	* @param pRegCtx The register context.
2711	*
2712	* @note Will assert if called on a non-V8086 context.
2713	*/
2714	BS3_CMN_PROTO_STUB(void, Bs3RegCtxConvertV86ToRm,(PBS3REGCTX pRegCtx));
2715
2716	/**
2717	* Restores a register context.
2718	*
2719	* @param pRegCtx The register context to be restored and resumed.
2720	* @param fFlags BS3REGCTXRESTORE_F_XXX.
2721	*
2722	* @remarks Will switch to ring-0.
2723	* @remarks Does not return.
2724	*/
2725	BS3_CMN_PROTO_NOSB(DECL_NO_RETURN(void), Bs3RegCtxRestore,(PCBS3REGCTX pRegCtx, uint16_t fFlags));
2726	#if !defined(BS3_KIT_WITH_NO_RETURN) && defined(__WATCOMC__)
2727	# pragma aux Bs3RegCtxRestore_c16 "_Bs3RegCtxRestore_aborts_c16" __aborts
2728	# pragma aux Bs3RegCtxRestore_f16 "_Bs3RegCtxRestore_aborts_f16" __aborts
2729	# pragma aux Bs3RegCtxRestore_c32 "_Bs3RegCtxRestore_aborts_c32" __aborts
2730	#endif
2731
2732	/** @name Flags for Bs3RegCtxRestore
2733	* @{ */
2734	/** Skip restoring the CRx registers. */
2735	#define BS3REGCTXRESTORE_F_SKIP_CRX UINT16_C(0x0001)
2736	/** Sets g_fBs3TrapNoV86Assist. */
2737	#define BS3REGCTXRESTORE_F_NO_V86_ASSIST UINT16_C(0x0002)
2738	/** @} */
2739
2740	/**
2741	* Prints the register context.
2742	*
2743	* @param pRegCtx The register context to be printed.
2744	*/
2745	BS3_CMN_PROTO_STUB(void, Bs3RegCtxPrint,(PCBS3REGCTX pRegCtx));
2746
2747	/**
2748	* Sets a GPR and segment register to point at the same location as @a uFlat.
2749	*
2750	* @param pRegCtx The register context.
2751	* @param pGpr The general purpose register to set (points within
2752	* @a pRegCtx).
2753	* @param pSel The selector register (points within @a pRegCtx).
2754	* @param uFlat Flat location address.
2755	*/
2756	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetGrpSegFromFlat,(PBS3REGCTX pRegCtx, PBS3REG pGpr, PRTSEL pSel, RTCCUINTXREG uFlat));
2757
2758	/**
2759	* Sets a GPR and segment register to point at the same location as @a ovPtr.
2760	*
2761	* @param pRegCtx The register context.
2762	* @param pGpr The general purpose register to set (points within
2763	* @a pRegCtx).
2764	* @param pSel The selector register (points within @a pRegCtx).
2765	* @param pvPtr Current context pointer.
2766	*/
2767	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetGrpSegFromCurPtr,(PBS3REGCTX pRegCtx, PBS3REG pGpr, PRTSEL pSel, void BS3_FAR *pvPtr));
2768
2769	/**
2770	* Sets a GPR and DS to point at the same location as @a pvPtr.
2771	*
2772	* @param pRegCtx The register context.
2773	* @param pGpr The general purpose register to set (points within
2774	* @a pRegCtx).
2775	* @param pvPtr Current context pointer.
2776	*/
2777	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetGrpDsFromCurPtr,(PBS3REGCTX pRegCtx, PBS3REG pGpr, void BS3_FAR *pvPtr));
2778
2779	/**
2780	* Sets CS:RIP to point at the same piece of code as @a uFlatCode.
2781	*
2782	* @param pRegCtx The register context.
2783	* @param uFlatCode Flat code pointer
2784	* @sa Bs3RegCtxSetRipCsFromLnkPtr, Bs3RegCtxSetRipCsFromCurPtr
2785	*/
2786	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetRipCsFromFlat,(PBS3REGCTX pRegCtx, RTCCUINTXREG uFlatCode));
2787
2788	/**
2789	* Sets CS:RIP to point at the same piece of code as @a pfnCode.
2790	*
2791	* The 16-bit edition of this function expects a far 16:16 address as written by
2792	* the linker (i.e. real mode).
2793	*
2794	* @param pRegCtx The register context.
2795	* @param pfnCode Pointer to the code. In 32-bit and 64-bit mode this is a
2796	* flat address, while in 16-bit it's a far 16:16 address
2797	* as fixed up by the linker (real mode selector). This
2798	* address is converted to match the mode of the context.
2799	* @sa Bs3RegCtxSetRipCsFromCurPtr, Bs3RegCtxSetRipCsFromFlat
2800	*/
2801	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetRipCsFromLnkPtr,(PBS3REGCTX pRegCtx, FPFNBS3FAR pfnCode));
2802
2803	/**
2804	* Sets CS:RIP to point at the same piece of code as @a pfnCode.
2805	*
2806	* @param pRegCtx The register context.
2807	* @param pfnCode Pointer to the code. Current mode pointer.
2808	* @sa Bs3RegCtxSetRipCsFromLnkPtr, Bs3RegCtxSetRipCsFromFlat
2809	*/
2810	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetRipCsFromCurPtr,(PBS3REGCTX pRegCtx, FPFNBS3FAR pfnCode));
2811
2812	/**
2813	* Sets a GPR by number.
2814	*
2815	* @return true if @a iGpr is valid, false if not.
2816	* @param pRegCtx The register context.
2817	* @param iGpr The GPR number.
2818	* @param uValue The new value.
2819	* @param cbValue The size of the value: 1, 2, 4 or 8.
2820	*/
2821	BS3_CMN_PROTO_STUB(bool, Bs3RegCtxSetGpr,(PBS3REGCTX pRegCtx, uint8_t iGpr, uint64_t uValue, uint8_t cb));
2822
2823
2824	/**
2825	* The method to be used to save and restore the extended context.
2826	*/
2827	typedef enum BS3EXTCTXMETHOD
2828	{
2829	BS3EXTCTXMETHOD_INVALID = 0,
2830	BS3EXTCTXMETHOD_ANCIENT, /*< Ancient fnsave/frstor format. /
2831	BS3EXTCTXMETHOD_FXSAVE, /*< fxsave/fxrstor format. /
2832	BS3EXTCTXMETHOD_XSAVE, /*< xsave/xrstor format. /
2833	BS3EXTCTXMETHOD_END,
2834	} BS3EXTCTXMETHOD;
2835
2836
2837	/**
2838	* Extended CPU context (FPU, SSE, AVX, ++).
2839	*
2840	* @remarks Also in bs3kit.inc
2841	*/
2842	typedef struct BS3EXTCTX
2843	{
2844	/** Dummy/magic value. */
2845	uint16_t u16Magic;
2846	/** The size of the structure. */
2847	uint16_t cb;
2848	/** The method used to save and restore the context (BS3EXTCTXMETHOD). */
2849	uint8_t enmMethod;
2850	uint8_t abPadding0[3];
2851	/** Nominal XSAVE_C_XXX. */
2852	uint64_t fXcr0Nominal;
2853	/** The saved XCR0 mask (restored after xrstor). */
2854	uint64_t fXcr0Saved;
2855
2856	/** Explicit alignment padding. */
2857	uint8_t abPadding[64 - 2 - 2 - 1 - 3 - 8 - 8];
2858
2859	/** The context, variable size (see above).
2860	* This must be aligned on a 64 byte boundrary. */
2861	union
2862	{
2863	/** fnsave/frstor. */
2864	X86FPUSTATE Ancient;
2865	/** fxsave/fxrstor */
2866	X86FXSTATE x87;
2867	/** xsave/xrstor */
2868	X86XSAVEAREA x;
2869	/** Byte array view. */
2870	uint8_t ab[sizeof(X86XSAVEAREA)];
2871	} Ctx;
2872	} BS3EXTCTX;
2873	AssertCompileMemberAlignment(BS3EXTCTX, Ctx, 64);
2874	/** Pointer to an extended CPU context. */
2875	typedef BS3EXTCTX BS3_FAR *PBS3EXTCTX;
2876	/** Pointer to a const extended CPU context. */
2877	typedef BS3EXTCTX const BS3_FAR *PCBS3EXTCTX;
2878
2879	/** Magic value for BS3EXTCTX. */
2880	#define BS3EXTCTX_MAGIC UINT16_C(0x1980)
2881
2882	/**
2883	* Allocates and initializes the extended CPU context structure.
2884	*
2885	* @returns The new extended CPU context structure.
2886	* @param enmKind The kind of allocation to make.
2887	*/
2888	BS3_CMN_PROTO_STUB(PBS3EXTCTX, Bs3ExtCtxAlloc,(BS3MEMKIND enmKind));
2889
2890	/**
2891	* Frees an extended CPU context structure.
2892	*
2893	* @param pExtCtx The extended CPU context (returned by
2894	* Bs3ExtCtxAlloc).
2895	*/
2896	BS3_CMN_PROTO_STUB(void, Bs3ExtCtxFree,(PBS3EXTCTX pExtCtx));
2897
2898	/**
2899	* Get the size required for a BS3EXTCTX structure.
2900	*
2901	* @returns size in bytes of the whole structure.
2902	* @param pfFlags Where to return flags for Bs3ExtCtxInit.
2903	* @note Use Bs3ExtCtxAlloc when possible.
2904	*/
2905	BS3_CMN_PROTO_STUB(uint16_t, Bs3ExtCtxGetSize,(uint64_t *pfFlags));
2906
2907	/**
2908	* Initializes the extended CPU context structure.
2909	* @returns pExtCtx
2910	* @param pExtCtx The extended CPU context.
2911	* @param cbExtCtx The size of the @a pExtCtx allocation.
2912	* @param fFlags XSAVE_C_XXX flags.
2913	*/
2914	BS3_CMN_PROTO_STUB(PBS3EXTCTX, Bs3ExtCtxInit,(PBS3EXTCTX pExtCtx, uint16_t cbExtCtx, uint64_t fFlags));
2915
2916	/**
2917	* Saves the extended CPU state to the given structure.
2918	*
2919	* @param pExtCtx The extended CPU context.
2920	* @remarks All GPRs preserved.
2921	*/
2922	BS3_CMN_PROTO_FARSTUB(4, void, Bs3ExtCtxSave,(PBS3EXTCTX pExtCtx));
2923
2924	/**
2925	* Saves the extended CPU state to the given structure, when in long mode this
2926	* is done from 64-bit mode to capture YMM8 thru YMM15.
2927	*
2928	* This is for testing 64-bit code from a 32-bit test driver.
2929	*
2930	* @param pExtCtx The extended CPU context.
2931	* @note Only safe to call from ring-0 at present.
2932	* @remarks All GPRs preserved.
2933	* @sa Bs3ExtCtxRestoreEx
2934	*/
2935	BS3_CMN_PROTO_FARSTUB(4, void, Bs3ExtCtxSaveEx,(PBS3EXTCTX pExtCtx));
2936
2937	/**
2938	* Restores the extended CPU state from the given structure.
2939	*
2940	* @param pExtCtx The extended CPU context.
2941	* @remarks All GPRs preserved.
2942	*/
2943	BS3_CMN_PROTO_FARSTUB(4, void, Bs3ExtCtxRestore,(PCBS3EXTCTX pExtCtx));
2944
2945	/**
2946	* Restores the extended CPU state from the given structure and in long mode
2947	* switch to 64-bit mode to do this so YMM8-YMM15 are also loaded.
2948	*
2949	* This is for testing 64-bit code from a 32-bit test driver.
2950	*
2951	* @param pExtCtx The extended CPU context.
2952	* @note Only safe to call from ring-0 at present.
2953	* @remarks All GPRs preserved.
2954	* @sa Bs3ExtCtxSaveEx
2955	*/
2956	BS3_CMN_PROTO_FARSTUB(4, void, Bs3ExtCtxRestoreEx,(PCBS3EXTCTX pExtCtx));
2957
2958	/**
2959	* Copies the state from one context to another.
2960	*
2961	* @returns pDst
2962	* @param pDst The destination extended CPU context.
2963	* @param pSrc The source extended CPU context.
2964	*/
2965	BS3_CMN_PROTO_STUB(PBS3EXTCTX, Bs3ExtCtxCopy,(PBS3EXTCTX pDst, PCBS3EXTCTX pSrc));
2966
2967	/**
2968	* Gets the FCW register value from @a pExtCtx.
2969	*
2970	* @returns FCW value.
2971	* @param pExtCtx The extended CPU context.
2972	*/
2973	BS3_CMN_PROTO_STUB(uint16_t, Bs3ExtCtxGetFcw,(PCBS3EXTCTX pExtCtx));
2974
2975	/**
2976	* Sets the FCW register value in @a pExtCtx.
2977	*
2978	* @param pExtCtx The extended CPU context.
2979	* @param uValue The new FCW value.
2980	*/
2981	BS3_CMN_PROTO_STUB(void, Bs3ExtCtxSetFcw,(PBS3EXTCTX pExtCtx, uint16_t uValue));
2982
2983	/**
2984	* Gets the FSW register value from @a pExtCtx.
2985	*
2986	* @returns FSW value.
2987	* @param pExtCtx The extended CPU context.
2988	*/
2989	BS3_CMN_PROTO_STUB(uint16_t, Bs3ExtCtxGetFsw,(PCBS3EXTCTX pExtCtx));
2990
2991	/**
2992	* Sets the FSW register value in @a pExtCtx.
2993	*
2994	* @param pExtCtx The extended CPU context.
2995	* @param uValue The new FSW value.
2996	*/
2997	BS3_CMN_PROTO_STUB(void, Bs3ExtCtxSetFsw,(PBS3EXTCTX pExtCtx, uint16_t uValue));
2998
2999	/**
3000	* Gets the abridged FTW register value from @a pExtCtx.
3001	*
3002	* @returns FTW value.
3003	* @param pExtCtx The extended CPU context.
3004	*/
3005	BS3_CMN_PROTO_STUB(uint16_t, Bs3ExtCtxGetAbridgedFtw,(PCBS3EXTCTX pExtCtx));
3006
3007	/**
3008	* Sets the abridged FTW register value in @a pExtCtx.
3009	*
3010	* Currently this requires that the state stores teh abridged FTW, no conversion
3011	* to the two-bit variant will be attempted.
3012	*
3013	* @returns true if set successfully, false if not.
3014	* @param pExtCtx The extended CPU context.
3015	* @param uValue The new FTW value.
3016	*/
3017	BS3_CMN_PROTO_STUB(bool, Bs3ExtCtxSetAbridgedFtw,(PBS3EXTCTX pExtCtx, uint16_t uValue));
3018
3019	/**
3020	* Gets the MXCSR register value from @a pExtCtx.
3021	*
3022	* @returns MXCSR value, 0 if not part of context.
3023	* @param pExtCtx The extended CPU context.
3024	*/
3025	BS3_CMN_PROTO_STUB(uint32_t, Bs3ExtCtxGetMxCsr,(PCBS3EXTCTX pExtCtx));
3026
3027	/**
3028	* Sets the MXCSR register value in @a pExtCtx.
3029	*
3030	* @returns true if set, false if not supported by the format.
3031	* @param pExtCtx The extended CPU context.
3032	* @param uValue The new MXCSR value.
3033	*/
3034	BS3_CMN_PROTO_STUB(bool, Bs3ExtCtxSetMxCsr,(PBS3EXTCTX pExtCtx, uint32_t uValue));
3035
3036	/**
3037	* Gets the MXCSR MASK value from @a pExtCtx.
3038	*
3039	* @returns MXCSR MASK value, 0 if not part of context.
3040	* @param pExtCtx The extended CPU context.
3041	*/
3042	BS3_CMN_PROTO_STUB(uint32_t, Bs3ExtCtxGetMxCsrMask,(PCBS3EXTCTX pExtCtx));
3043
3044	/**
3045	* Sets the MXCSR MASK value in @a pExtCtx.
3046	*
3047	* @returns true if set, false if not supported by the format.
3048	* @param pExtCtx The extended CPU context.
3049	* @param uValue The new MXCSR MASK value.
3050	*/
3051	BS3_CMN_PROTO_STUB(bool, Bs3ExtCtxSetMxCsrMask,(PBS3EXTCTX pExtCtx, uint32_t uValue));
3052
3053	/**
3054	* Gets the value of MM register number @a iReg from @a pExtCtx.
3055	*
3056	* @returns The MM register value.
3057	* @param pExtCtx The extended CPU context.
3058	* @param iReg The register to get (0 thru 7).
3059	*/
3060	BS3_CMN_PROTO_STUB(uint64_t, Bs3ExtCtxGetMm,(PCBS3EXTCTX pExtCtx, uint8_t iReg));
3061
3062	/** What to do about the 16-bit above the MM QWORD. */
3063	typedef enum BS3EXTCTXTOPMM
3064	{
3065	/** Invalid zero value. */
3066	BS3EXTCTXTOPMM_INVALID = 0,
3067	/** Set to 0FFFFh like real CPUs typically does when updating an MM register. */
3068	BS3EXTCTXTOPMM_SET,
3069	/** Set to zero. */
3070	BS3EXTCTXTOPMM_ZERO,
3071	/** Don't change the value, leaving it as-is. */
3072	BS3EXTCTXTOPMM_AS_IS,
3073	/** End of valid values. */
3074	BS3EXTCTXTOPMM_END
3075	} BS3EXTCTXTOPMM;
3076
3077	/**
3078	* Sets the value of YMM register number @a iReg in @a pExtCtx to @a pValue.
3079	*
3080	* @returns True if set, false if not.
3081	* @param pExtCtx The extended CPU context.
3082	* @param iReg The register to set.
3083	* @param uValue The new register value.
3084	* @param enmTop What to do about the 16-bit value above the MM
3085	* QWord.
3086	*/
3087	BS3_CMN_PROTO_STUB(bool, Bs3ExtCtxSetMm,(PBS3EXTCTX pExtCtx, uint8_t iReg, uint64_t uValue, BS3EXTCTXTOPMM enmTop));
3088
3089	/**
3090	* Gets the value of XMM register number @a iReg from @a pExtCtx.
3091	*
3092	* @returns pValue
3093	* @param pExtCtx The extended CPU context.
3094	* @param iReg The register to get.
3095	* @param pValue Where to return the value. Zeroed if the state
3096	* doesn't support SSE or if @a iReg is invalid.
3097	*/
3098	BS3_CMN_PROTO_STUB(PRTUINT128U, Bs3ExtCtxGetXmm,(PCBS3EXTCTX pExtCtx, uint8_t iReg, PRTUINT128U pValue));
3099
3100	/**
3101	* Sets the value of XMM register number @a iReg in @a pExtCtx to @a pValue.
3102	*
3103	* @returns True if set, false if not set (not supported by state format or
3104	* invalid iReg).
3105	* @param pExtCtx The extended CPU context.
3106	* @param iReg The register to set.
3107	* @param pValue The new register value.
3108	*/
3109	BS3_CMN_PROTO_STUB(bool, Bs3ExtCtxSetXmm,(PBS3EXTCTX pExtCtx, uint8_t iReg, PCRTUINT128U pValue));
3110
3111	/**
3112	* Gets the value of YMM register number @a iReg from @a pExtCtx.
3113	*
3114	* @returns pValue
3115	* @param pExtCtx The extended CPU context.
3116	* @param iReg The register to get.
3117	* @param pValue Where to return the value. Parts not in the
3118	* extended state are zeroed. For absent or invalid
3119	* @a iReg values this is set to zero.
3120	*/
3121	BS3_CMN_PROTO_STUB(PRTUINT256U, Bs3ExtCtxGetYmm,(PCBS3EXTCTX pExtCtx, uint8_t iReg, PRTUINT256U pValue));
3122
3123	/**
3124	* Sets the value of YMM register number @a iReg in @a pExtCtx to @a pValue.
3125	*
3126	* @returns true if set (even if only partially). False if not set (not
3127	* supported by state format, unsupported/invalid iReg).
3128	* @param pExtCtx The extended CPU context.
3129	* @param iReg The register to set.
3130	* @param pValue The new register value.
3131	* @param cbValue Number of bytes to take from @a pValue, either 16 or
3132	* 32. If 16, the high part will be zeroed when present
3133	* in the state.
3134	*/
3135	BS3_CMN_PROTO_STUB(bool, Bs3ExtCtxSetYmm,(PBS3EXTCTX pExtCtx, uint8_t iReg, PCRTUINT256U pValue, uint8_t cbValue));
3136
3137
3138	/** @name Debug register accessors for V8086 mode (works everwhere).
3139	* @{ */
3140	BS3_CMN_PROTO_NOSB(RTCCUINTXREG, Bs3RegGetDr0,(void));
3141	BS3_CMN_PROTO_NOSB(RTCCUINTXREG, Bs3RegGetDr1,(void));
3142	BS3_CMN_PROTO_NOSB(RTCCUINTXREG, Bs3RegGetDr2,(void));
3143	BS3_CMN_PROTO_NOSB(RTCCUINTXREG, Bs3RegGetDr3,(void));
3144	BS3_CMN_PROTO_NOSB(RTCCUINTXREG, Bs3RegGetDr6,(void));
3145	BS3_CMN_PROTO_NOSB(RTCCUINTXREG, Bs3RegGetDr7,(void));
3146
3147	BS3_CMN_PROTO_NOSB(void, Bs3RegSetDr0,(RTCCUINTXREG uValue));
3148	BS3_CMN_PROTO_NOSB(void, Bs3RegSetDr1,(RTCCUINTXREG uValue));
3149	BS3_CMN_PROTO_NOSB(void, Bs3RegSetDr2,(RTCCUINTXREG uValue));
3150	BS3_CMN_PROTO_NOSB(void, Bs3RegSetDr3,(RTCCUINTXREG uValue));
3151	BS3_CMN_PROTO_NOSB(void, Bs3RegSetDr6,(RTCCUINTXREG uValue));
3152	BS3_CMN_PROTO_NOSB(void, Bs3RegSetDr7,(RTCCUINTXREG uValue));
3153
3154	BS3_CMN_PROTO_NOSB(RTCCUINTXREG, Bs3RegGetDrX,(uint8_t iReg));
3155	BS3_CMN_PROTO_NOSB(void, Bs3RegSetDrX,(uint8_t iReg, RTCCUINTXREG uValue));
3156	/** @} */
3157
3158
3159	/** @name Control register accessors for V8086 mode (works everwhere).
3160	* @{ */
3161	BS3_CMN_PROTO_NOSB(RTCCUINTXREG, Bs3RegGetCr0,(void));
3162	BS3_CMN_PROTO_NOSB(RTCCUINTXREG, Bs3RegGetCr2,(void));
3163	BS3_CMN_PROTO_NOSB(RTCCUINTXREG, Bs3RegGetCr3,(void));
3164	BS3_CMN_PROTO_NOSB(RTCCUINTXREG, Bs3RegGetCr4,(void));
3165	BS3_CMN_PROTO_NOSB(uint16_t, Bs3RegGetTr,(void));
3166	BS3_CMN_PROTO_NOSB(uint16_t, Bs3RegGetLdtr,(void));
3167	BS3_CMN_PROTO_NOSB(uint64_t, Bs3RegGetXcr0,(void));
3168
3169	BS3_CMN_PROTO_NOSB(void, Bs3RegSetCr0,(RTCCUINTXREG uValue));
3170	BS3_CMN_PROTO_NOSB(void, Bs3RegSetCr2,(RTCCUINTXREG uValue));
3171	BS3_CMN_PROTO_NOSB(void, Bs3RegSetCr3,(RTCCUINTXREG uValue));
3172	BS3_CMN_PROTO_NOSB(void, Bs3RegSetCr4,(RTCCUINTXREG uValue));
3173	BS3_CMN_PROTO_NOSB(void, Bs3RegSetTr,(uint16_t uValue));
3174	BS3_CMN_PROTO_NOSB(void, Bs3RegSetLdtr,(uint16_t uValue));
3175	BS3_CMN_PROTO_NOSB(void, Bs3RegSetXcr0,(uint64_t uValue));
3176	/** @} */
3177
3178
3179	/**
3180	* Trap frame.
3181	*/
3182	typedef struct BS3TRAPFRAME
3183	{
3184	/** 0x00: Exception/interrupt number. */
3185	uint8_t bXcpt;
3186	/** 0x01: The size of the IRET frame. */
3187	uint8_t cbIretFrame;
3188	/** 0x02: The handler CS. */
3189	uint16_t uHandlerCs;
3190	/** 0x04: The handler SS. */
3191	uint16_t uHandlerSs;
3192	/** 0x06: Explicit alignment. */
3193	uint16_t usAlignment;
3194	/** 0x08: The handler RSP (pointer to the iret frame, skipping ErrCd). */
3195	uint64_t uHandlerRsp;
3196	/** 0x10: The handler RFLAGS value. */
3197	uint64_t fHandlerRfl;
3198	/** 0x18: The error code (if applicable). */
3199	uint64_t uErrCd;
3200	/** 0x20: The register context. */
3201	BS3REGCTX Ctx;
3202	} BS3TRAPFRAME;
3203	AssertCompileSize(BS3TRAPFRAME, 0x20 + 0xd0);
3204	/** Pointer to a trap frame. */
3205	typedef BS3TRAPFRAME BS3_FAR *PBS3TRAPFRAME;
3206	/** Pointer to a const trap frame. */
3207	typedef BS3TRAPFRAME const BS3_FAR *PCBS3TRAPFRAME;
3208
3209
3210	/**
3211	* Re-initializes the trap handling for the current mode.
3212	*
3213	* Useful after a test that messes with the IDT/IVT.
3214	*
3215	* @sa Bs3TrapInit
3216	*/
3217	BS3_CMN_PROTO_STUB(void, Bs3TrapReInit,(void));
3218
3219	/**
3220	* Initializes real mode and v8086 trap handling.
3221	*
3222	* @remarks Does not install RM/V86 trap handling, just initializes the
3223	* structures.
3224	*/
3225	BS3_CMN_PROTO_STUB(void, Bs3TrapRmV86Init,(void));
3226
3227	/**
3228	* Initializes real mode and v8086 trap handling, extended version.
3229	*
3230	* @param f386Plus Set if the CPU is 80386 or later and
3231	* extended registers should be saved. Once initialized
3232	* with this parameter set to @a true, the effect cannot be
3233	* reversed.
3234	*
3235	* @remarks Does not install RM/V86 trap handling, just initializes the
3236	* structures.
3237	*/
3238	BS3_CMN_PROTO_STUB(void, Bs3TrapRmV86InitEx,(bool f386Plus));
3239
3240	/**
3241	* Initializes 16-bit (protected mode) trap handling.
3242	*
3243	* @remarks Does not install 16-bit trap handling, just initializes the
3244	* structures.
3245	*/
3246	BS3_CMN_PROTO_STUB(void, Bs3Trap16Init,(void));
3247
3248	/**
3249	* Initializes 16-bit (protected mode) trap handling, extended version.
3250	*
3251	* @param f386Plus Set if the CPU is 80386 or later and
3252	* extended registers should be saved. Once initialized
3253	* with this parameter set to @a true, the effect cannot be
3254	* reversed.
3255	*
3256	* @remarks Does not install 16-bit trap handling, just initializes the
3257	* structures.
3258	*/
3259	BS3_CMN_PROTO_STUB(void, Bs3Trap16InitEx,(bool f386Plus));
3260
3261	/**
3262	* Initializes 32-bit trap handling.
3263	*
3264	* @remarks Does not install 32-bit trap handling, just initializes the
3265	* structures.
3266	*/
3267	BS3_CMN_PROTO_STUB(void, Bs3Trap32Init,(void));
3268
3269	/**
3270	* Initializes 64-bit trap handling
3271	*
3272	* @remarks Does not install 64-bit trap handling, just initializes the
3273	* structures.
3274	*/
3275	BS3_CMN_PROTO_STUB(void, Bs3Trap64Init,(void));
3276
3277	/**
3278	* Modifies the real-mode / V86 IVT entry specified by @a iIvt.
3279	*
3280	* @param iIvt The index of the IDT entry to set.
3281	* @param uSeg The handler real-mode segment.
3282	* @param off The handler offset.
3283	*/
3284	BS3_CMN_PROTO_STUB(void, Bs3TrapRmV86SetGate,(uint8_t iIvt, uint16_t uSeg, uint16_t off));
3285
3286	/**
3287	* Modifies the 16-bit IDT entry (protected mode) specified by @a iIdt.
3288	*
3289	* @param iIdt The index of the IDT entry to set.
3290	* @param bType The gate type (X86_SEL_TYPE_SYS_XXX).
3291	* @param bDpl The DPL.
3292	* @param uSel The handler selector.
3293	* @param off The handler offset (if applicable).
3294	* @param cParams The parameter count (for call gates).
3295	*/
3296	BS3_CMN_PROTO_STUB(void, Bs3Trap16SetGate,(uint8_t iIdt, uint8_t bType, uint8_t bDpl,
3297	uint16_t uSel, uint16_t off, uint8_t cParams));
3298
3299	/** The address of Bs3Trap16GenericEntries.
3300	* Bs3Trap16GenericEntries is an array of interrupt/trap/whatever entry
3301	* points, 8 bytes each, that will create a register frame and call the generic
3302	* C compatible trap handlers. */
3303	extern uint32_t g_Bs3Trap16GenericEntriesFlatAddr;
3304
3305	/**
3306	* Modifies the 32-bit IDT entry specified by @a iIdt.
3307	*
3308	* @param iIdt The index of the IDT entry to set.
3309	* @param bType The gate type (X86_SEL_TYPE_SYS_XXX).
3310	* @param bDpl The DPL.
3311	* @param uSel The handler selector.
3312	* @param off The handler offset (if applicable).
3313	* @param cParams The parameter count (for call gates).
3314	*/
3315	BS3_CMN_PROTO_STUB(void, Bs3Trap32SetGate,(uint8_t iIdt, uint8_t bType, uint8_t bDpl,
3316	uint16_t uSel, uint32_t off, uint8_t cParams));
3317
3318	/** The address of Bs3Trap32GenericEntries.
3319	* Bs3Trap32GenericEntries is an array of interrupt/trap/whatever entry
3320	* points, 10 bytes each, that will create a register frame and call the generic
3321	* C compatible trap handlers. */
3322	extern uint32_t g_Bs3Trap32GenericEntriesFlatAddr;
3323
3324	/**
3325	* Modifies the 64-bit IDT entry specified by @a iIdt.
3326	*
3327	* @param iIdt The index of the IDT entry to set.
3328	* @param bType The gate type (X86_SEL_TYPE_SYS_XXX).
3329	* @param bDpl The DPL.
3330	* @param uSel The handler selector.
3331	* @param off The handler offset (if applicable).
3332	* @param bIst The interrupt stack to use.
3333	*/
3334	BS3_CMN_PROTO_STUB(void, Bs3Trap64SetGate,(uint8_t iIdt, uint8_t bType, uint8_t bDpl, uint16_t uSel, uint64_t off, uint8_t bIst));
3335
3336	/** The address of Bs3Trap64GenericEntries.
3337	* Bs3Trap64GenericEntries is an array of interrupt/trap/whatever entry
3338	* points, 8 bytes each, that will create a register frame and call the generic
3339	* C compatible trap handlers. */
3340	extern uint32_t g_Bs3Trap64GenericEntriesFlatAddr;
3341
3342	/**
3343	* Adjusts the DPL the IDT entry specified by @a iIdt.
3344	*
3345	* The change is applied to the 16-bit, 32-bit and 64-bit IDTs.
3346	*
3347	* @returns Old DPL (from 64-bit IDT).
3348	* @param iIdt The index of the IDT and IVT entry to set.
3349	* @param bDpl The DPL.
3350	*/
3351	BS3_CMN_PROTO_STUB(uint8_t, Bs3TrapSetDpl,(uint8_t iIdt, uint8_t bDpl));
3352
3353	/**
3354	* C-style trap handler.
3355	*
3356	* The caller will resume the context in @a pTrapFrame upon return.
3357	*
3358	* @param pTrapFrame The trap frame. Registers can be modified.
3359	* @note The 16-bit versions must be in CGROUP16!
3360	*/
3361	typedef BS3_DECL_NEAR_CALLBACK(void) FNBS3TRAPHANDLER(PBS3TRAPFRAME pTrapFrame);
3362	/** Pointer to a trap handler (current template context). */
3363	typedef FNBS3TRAPHANDLER *PFNBS3TRAPHANDLER;
3364
3365	#if ARCH_BITS == 16
3366	/** @copydoc FNBS3TRAPHANDLER */
3367	typedef FNBS3FAR FNBS3TRAPHANDLER32;
3368	/** @copydoc FNBS3TRAPHANDLER */
3369	typedef FNBS3FAR FNBS3TRAPHANDLER64;
3370	#else
3371	/** @copydoc FNBS3TRAPHANDLER */
3372	typedef FNBS3TRAPHANDLER FNBS3TRAPHANDLER32;
3373	/** @copydoc FNBS3TRAPHANDLER */
3374	typedef FNBS3TRAPHANDLER FNBS3TRAPHANDLER64;
3375	#endif
3376	/** @copydoc PFNBS3TRAPHANDLER */
3377	typedef FNBS3TRAPHANDLER32 *PFNBS3TRAPHANDLER32;
3378	/** @copydoc PFNBS3TRAPHANDLER */
3379	typedef FNBS3TRAPHANDLER64 *PFNBS3TRAPHANDLER64;
3380
3381
3382	/**
3383	* C-style trap handler, near 16-bit (CGROUP16).
3384	*
3385	* The caller will resume the context in @a pTrapFrame upon return.
3386	*
3387	* @param pTrapFrame The trap frame. Registers can be modified.
3388	*/
3389	typedef BS3_DECL_NEAR_CALLBACK(void) FNBS3TRAPHANDLER16(PBS3TRAPFRAME pTrapFrame);
3390	/** Pointer to a trap handler (current template context). */
3391	typedef FNBS3TRAPHANDLER16 *PFNBS3TRAPHANDLER16;
3392
3393	/**
3394	* C-style trap handler, near 16-bit (CGROUP16).
3395	*
3396	* The caller will resume the context in @a pTrapFrame upon return.
3397	*
3398	* @param pTrapFrame The trap frame. Registers can be modified.
3399	*/
3400	typedef BS3_DECL_CALLBACK(void) FNBS3TRAPHANDLER3264(PBS3TRAPFRAME pTrapFrame);
3401	/** Pointer to a trap handler (current template context). */
3402	typedef FNBS3TRAPHANDLER3264 *FPFNBS3TRAPHANDLER3264;
3403
3404
3405	/**
3406	* Sets a trap handler (C/C++/assembly) for the current bitcount.
3407	*
3408	* @returns Previous handler.
3409	* @param iIdt The index of the IDT entry to set.
3410	* @param pfnHandler Pointer to the handler.
3411	* @sa Bs3TrapSetHandlerEx
3412	*/
3413	BS3_CMN_PROTO_STUB(PFNBS3TRAPHANDLER, Bs3TrapSetHandler,(uint8_t iIdt, PFNBS3TRAPHANDLER pfnHandler));
3414
3415	/**
3416	* Sets a trap handler (C/C++/assembly) for all the bitcounts.
3417	*
3418	* @param iIdt The index of the IDT and IVT entry to set.
3419	* @param pfnHandler16 Pointer to the 16-bit handler. (Assumes linker addresses.)
3420	* @param pfnHandler32 Pointer to the 32-bit handler. (Assumes linker addresses.)
3421	* @param pfnHandler64 Pointer to the 64-bit handler. (Assumes linker addresses.)
3422	* @sa Bs3TrapSetHandler
3423	*/
3424	BS3_CMN_PROTO_STUB(void, Bs3TrapSetHandlerEx,(uint8_t iIdt, PFNBS3TRAPHANDLER16 pfnHandler16,
3425	PFNBS3TRAPHANDLER32 pfnHandler32, PFNBS3TRAPHANDLER64 pfnHandler64));
3426
3427	/**
3428	* Default C/C++ trap handler.
3429	*
3430	* This will check trap record and panic if no match was found.
3431	*
3432	* @param pTrapFrame Trap frame of the trap to handle.
3433	*/
3434	BS3_CMN_PROTO_STUB(void, Bs3TrapDefaultHandler,(PBS3TRAPFRAME pTrapFrame));
3435
3436	/**
3437	* Prints the trap frame (to screen).
3438	* @param pTrapFrame Trap frame to print.
3439	*/
3440	BS3_CMN_PROTO_STUB(void, Bs3TrapPrintFrame,(PCBS3TRAPFRAME pTrapFrame));
3441
3442	/**
3443	* Sets up a long jump from a trap handler.
3444	*
3445	* The long jump will only be performed once, but will catch any kind of trap,
3446	* fault, interrupt or irq.
3447	*
3448	* @retval true on the initial call.
3449	* @retval false on trap return.
3450	* @param pTrapFrame Where to store the trap information when
3451	* returning @c false.
3452	* @sa #Bs3TrapUnsetJmp
3453	*/
3454	BS3_CMN_PROTO_NOSB(DECL_RETURNS_TWICE(bool),Bs3TrapSetJmp,(PBS3TRAPFRAME pTrapFrame));
3455
3456	/**
3457	* Combination of #Bs3TrapSetJmp and #Bs3RegCtxRestore.
3458	*
3459	* @param pCtxRestore The context to restore.
3460	* @param pTrapFrame Where to store the trap information.
3461	*/
3462	BS3_CMN_PROTO_STUB(void, Bs3TrapSetJmpAndRestore,(PCBS3REGCTX pCtxRestore, PBS3TRAPFRAME pTrapFrame));
3463
3464	/**
3465	* Variation of Bs3TrapSetJmpAndRestore that includes
3466	* #Bs3TrapSetJmpAndRestoreInRm and calls is if pCtxRestore is a real mode
3467	* context and we're not in real mode.
3468	*
3469	* This is useful for 32-bit test drivers running via #Bs3TestDoModesByOne using
3470	* BS3TESTMODEBYONEENTRY_F_REAL_MODE_READY to allow them to test real-mode too.
3471	*
3472	* @param pCtxRestore The context to restore.
3473	* @param pTrapFrame Where to store the trap information.
3474	*/
3475	BS3_CMN_PROTO_STUB(void, Bs3TrapSetJmpAndRestoreWithRm,(PCBS3REGCTX pCtxRestore, PBS3TRAPFRAME pTrapFrame));
3476
3477	/**
3478	* Combination of #Bs3ExtCtxRestoreEx, #Bs3TrapSetJmp, #Bs3RegCtxRestore and
3479	* #Bs3ExtCtxSaveEx.
3480	*
3481	* @param pCtxRestore The context to restore.
3482	* @param pExtCtxRestore The extended context to restore.
3483	* @param pTrapFrame Where to store the trap information.
3484	* @param pExtCtxTrap Where to store the extended context after the trap.
3485	* Note, the saving isn't done from the trap handler,
3486	* but after #Bs3TrapSetJmp returns zero (i.e. for the
3487	* 2nd time).
3488	*/
3489	BS3_CMN_PROTO_STUB(void, Bs3TrapSetJmpAndRestoreWithExtCtx,(PCBS3REGCTX pCtxRestore, PCBS3EXTCTX pExtCtxRestore,
3490	PBS3TRAPFRAME pTrapFrame, PBS3EXTCTX pExtCtxTrap));
3491
3492	/**
3493	* Variation of Bs3TrapSetJmpAndRestoreWithExtCtx that includes
3494	* #Bs3TrapSetJmpAndRestoreInRm and calls is if pCtxRestore is a real mode
3495	* context and we're not in real mode.
3496	*
3497	* This is useful for 32-bit test drivers running via #Bs3TestDoModesByOne using
3498	* BS3TESTMODEBYONEENTRY_F_REAL_MODE_READY to allow them to test real-mode too.
3499	*
3500	* @param pCtxRestore The context to restore.
3501	* @param pExtCtxRestore The extended context to restore.
3502	* @param pTrapFrame Where to store the trap information.
3503	* @param pExtCtxTrap Where to store the extended context after the trap.
3504	* Note, the saving isn't done from the trap handler,
3505	* but after #Bs3TrapSetJmp returns zero (i.e. for the
3506	* 2nd time).
3507	*/
3508	BS3_CMN_PROTO_STUB(void, Bs3TrapSetJmpAndRestoreWithExtCtxAndRm,(PCBS3REGCTX pCtxRestore, PCBS3EXTCTX pExtCtxRestore,
3509	PBS3TRAPFRAME pTrapFrame, PBS3EXTCTX pExtCtxTrap));
3510
3511	/**
3512	* Combination of Bs3SwitchToRM, #Bs3TrapSetJmp and #Bs3RegCtxRestore.
3513	*
3514	* @param pCtxRestore The context to restore. Must be real-mode
3515	* addressable.
3516	* @param pTrapFrame Where to store the trap information. Must be
3517	* real-mode addressable.
3518	*/
3519	BS3_CMN_PROTO_STUB(void, Bs3TrapSetJmpAndRestoreInRm,(PCBS3REGCTX pCtxRestore, PBS3TRAPFRAME pTrapFrame));
3520
3521	/**
3522	* Disables a previous #Bs3TrapSetJmp call.
3523	*/
3524	BS3_CMN_PROTO_STUB(void, Bs3TrapUnsetJmp,(void));
3525
3526
3527	/**
3528	* The current test step.
3529	*/
3530	extern uint16_t g_usBs3TestStep;
3531
3532	/**
3533	* Equivalent to RTTestCreate + RTTestBanner.
3534	*
3535	* @param pszTest The test name.
3536	*/
3537	BS3_CMN_PROTO_STUB(void, Bs3TestInit,(const char BS3_FAR *pszTest));
3538
3539
3540	/**
3541	* Equivalent to RTTestSummaryAndDestroy.
3542	*/
3543	BS3_CMN_PROTO_STUB(void, Bs3TestTerm,(void));
3544
3545	/**
3546	* Equivalent to RTTestISub.
3547	*/
3548	BS3_CMN_PROTO_STUB(void, Bs3TestSub,(const char BS3_FAR *pszSubTest));
3549
3550	/**
3551	* Equivalent to RTTestIFailedF.
3552	*/
3553	BS3_CMN_PROTO_STUB(void, Bs3TestSubF,(const char BS3_FAR *pszFormat, ...));
3554
3555	/**
3556	* Equivalent to RTTestISubV.
3557	*/
3558	BS3_CMN_PROTO_STUB(void, Bs3TestSubV,(const char BS3_FAR *pszFormat, va_list BS3_FAR va));
3559
3560	/**
3561	* Equivalent to RTTestISubDone.
3562	*/
3563	BS3_CMN_PROTO_STUB(void, Bs3TestSubDone,(void));
3564
3565	/**
3566	* Equivalent to RTTestIValue.
3567	*/
3568	BS3_CMN_PROTO_STUB(void, Bs3TestValue,(const char BS3_FAR *pszName, uint64_t u64Value, uint8_t bUnit));
3569
3570	/**
3571	* Equivalent to RTTestSubErrorCount.
3572	*/
3573	BS3_CMN_PROTO_STUB(uint16_t, Bs3TestSubErrorCount,(void));
3574
3575	/**
3576	* Get nanosecond host timestamp.
3577	*
3578	* This only works when testing is enabled and will not work in VMs configured
3579	* with a 286, 186 or 8086/8088 CPU profile.
3580	*/
3581	BS3_CMN_PROTO_STUB(uint64_t, Bs3TestNow,(void));
3582
3583
3584	/**
3585	* Queries an unsigned 8-bit configuration value.
3586	*
3587	* @returns Value.
3588	* @param uCfg A VMMDEV_TESTING_CFG_XXX value.
3589	*/
3590	BS3_CMN_PROTO_STUB(uint8_t, Bs3TestQueryCfgU8,(uint16_t uCfg));
3591
3592	/**
3593	* Queries an unsigned 8-bit configuration value.
3594	*
3595	* @returns Value.
3596	* @param uCfg A VMMDEV_TESTING_CFG_XXX value.
3597	*/
3598	BS3_CMN_PROTO_STUB(bool, Bs3TestQueryCfgBool,(uint16_t uCfg));
3599
3600	/**
3601	* Queries an unsigned 32-bit configuration value.
3602	*
3603	* @returns Value.
3604	* @param uCfg A VMMDEV_TESTING_CFG_XXX value.
3605	*/
3606	BS3_CMN_PROTO_STUB(uint32_t, Bs3TestQueryCfgU32,(uint16_t uCfg));
3607
3608	/**
3609	* Equivalent to RTTestIPrintf with RTTESTLVL_ALWAYS.
3610	*
3611	* @param pszFormat What to print, format string. Explicit newline char.
3612	* @param ... String format arguments.
3613	*/
3614	BS3_CMN_PROTO_STUB(void, Bs3TestPrintf,(const char BS3_FAR *pszFormat, ...));
3615
3616	/**
3617	* Equivalent to RTTestIPrintfV with RTTESTLVL_ALWAYS.
3618	*
3619	* @param pszFormat What to print, format string. Explicit newline char.
3620	* @param va String format arguments.
3621	*/
3622	BS3_CMN_PROTO_STUB(void, Bs3TestPrintfV,(const char BS3_FAR *pszFormat, va_list BS3_FAR va));
3623
3624	/**
3625	* Same as Bs3TestPrintf, except no guest screen echo.
3626	*
3627	* @param pszFormat What to print, format string. Explicit newline char.
3628	* @param ... String format arguments.
3629	*/
3630	BS3_CMN_PROTO_STUB(void, Bs3TestHostPrintf,(const char BS3_FAR *pszFormat, ...));
3631
3632	/**
3633	* Same as Bs3TestPrintfV, except no guest screen echo.
3634	*
3635	* @param pszFormat What to print, format string. Explicit newline char.
3636	* @param va String format arguments.
3637	*/
3638	BS3_CMN_PROTO_STUB(void, Bs3TestHostPrintfV,(const char BS3_FAR *pszFormat, va_list BS3_FAR va));
3639
3640	/**
3641	* Equivalent to RTTestIFailed.
3642	* @returns false.
3643	*/
3644	BS3_CMN_PROTO_STUB(bool, Bs3TestFailed,(const char BS3_FAR *pszMessage));
3645
3646	/**
3647	* Equivalent to RTTestIFailedF.
3648	* @returns false.
3649	*/
3650	BS3_CMN_PROTO_STUB(bool, Bs3TestFailedF,(const char BS3_FAR *pszFormat, ...));
3651
3652	/**
3653	* Equivalent to RTTestIFailedV.
3654	* @returns false.
3655	*/
3656	BS3_CMN_PROTO_STUB(bool, Bs3TestFailedV,(const char BS3_FAR *pszFormat, va_list BS3_FAR va));
3657
3658	/**
3659	* Equivalent to RTTestISkipped.
3660	*
3661	* @param pszWhy Optional reason why it's being skipped.
3662	*/
3663	BS3_CMN_PROTO_STUB(void, Bs3TestSkipped,(const char BS3_FAR *pszWhy));
3664
3665	/**
3666	* Equivalent to RTTestISkippedF.
3667	*
3668	* @param pszFormat Optional reason why it's being skipped.
3669	* @param ... Format arguments.
3670	*/
3671	BS3_CMN_PROTO_STUB(void, Bs3TestSkippedF,(const char BS3_FAR *pszFormat, ...));
3672
3673	/**
3674	* Equivalent to RTTestISkippedV.
3675	*
3676	* @param pszFormat Optional reason why it's being skipped.
3677	* @param va Format arguments.
3678	*/
3679	BS3_CMN_PROTO_STUB(void, Bs3TestSkippedV,(const char BS3_FAR *pszFormat, va_list BS3_FAR va));
3680
3681	/**
3682	* Compares two register contexts, with PC and SP adjustments.
3683	*
3684	* Differences will be reported as test failures.
3685	*
3686	* @returns true if equal, false if not.
3687	* @param pActualCtx The actual register context.
3688	* @param pExpectedCtx Expected register context.
3689	* @param cbPcAdjust Program counter adjustment (applied to @a pExpectedCtx).
3690	* @param cbSpAdjust Stack pointer adjustment (applied to @a pExpectedCtx).
3691	* @param fExtraEfl Extra EFLAGS to OR into @a pExepctedCtx.
3692	* @param pszMode CPU mode or some other helpful text.
3693	* @param idTestStep Test step identifier.
3694	*/
3695	BS3_CMN_PROTO_STUB(bool, Bs3TestCheckRegCtxEx,(PCBS3REGCTX pActualCtx, PCBS3REGCTX pExpectedCtx, uint16_t cbPcAdjust,
3696	int16_t cbSpAdjust, uint32_t fExtraEfl,
3697	const char BS3_FAR *pszMode, uint16_t idTestStep));
3698
3699	/**
3700	* Compares two extended register contexts.
3701	*
3702	* Differences will be reported as test failures.
3703	*
3704	* @returns true if equal, false if not.
3705	* @param pActualExtCtx The actual register context.
3706	* @param pExpectedExtCtx Expected register context.
3707	* @param fFlags Reserved, pass 0.
3708	* @param pszMode CPU mode or some other helpful text.
3709	* @param idTestStep Test step identifier.
3710	*/
3711	BS3_CMN_PROTO_STUB(bool, Bs3TestCheckExtCtx,(PCBS3EXTCTX pActualExtCtx, PCBS3EXTCTX pExpectedExtCtx, uint16_t fFlags,
3712	const char BS3_FAR *pszMode, uint16_t idTestStep));
3713
3714	/**
3715	* Performs the testing for the given mode.
3716	*
3717	* This is called with the CPU already switch to that mode.
3718	*
3719	* @returns 0 on success or directly Bs3TestFailed calls, non-zero to indicate
3720	* where the test when wrong. Special value BS3TESTDOMODE_SKIPPED
3721	* should be returned to indicate that the test has been skipped.
3722	* @param bMode The current CPU mode.
3723	*/
3724	typedef BS3_DECL_CALLBACK(uint8_t) FNBS3TESTDOMODE(uint8_t bMode);
3725	/** Pointer (far) to a test (for 32-bit and 64-bit code, will be flatten). */
3726	typedef FNBS3TESTDOMODE *PFNBS3TESTDOMODE;
3727
3728	/** Special FNBS3TESTDOMODE return code for indicating a skipped mode test. */
3729	#define BS3TESTDOMODE_SKIPPED UINT8_MAX
3730
3731	/**
3732	* Mode sub-test entry.
3733	*
3734	* This can only be passed around to functions with the same bit count, as it
3735	* contains function pointers. In 16-bit mode, the 16-bit pointers are near and
3736	* implies BS3TEXT16, whereas the 32-bit and 64-bit pointers are far real mode
3737	* addresses that will be converted to flat address prior to calling them.
3738	* Similarly, in 32-bit and 64-bit the addresses are all flat and the 16-bit
3739	* ones will be converted to BS3TEXT16 based addresses prior to calling.
3740	*/
3741	typedef struct BS3TESTMODEENTRY
3742	{
3743	/** The sub-test name to be passed to Bs3TestSub if not NULL. */
3744	const char * BS3_FAR pszSubTest;
3745
3746	PFNBS3TESTDOMODE pfnDoRM;
3747
3748	PFNBS3TESTDOMODE pfnDoPE16;
3749	PFNBS3TESTDOMODE pfnDoPE16_32;
3750	PFNBS3TESTDOMODE pfnDoPE16_V86;
3751	PFNBS3TESTDOMODE pfnDoPE32;
3752	PFNBS3TESTDOMODE pfnDoPE32_16;
3753	PFNBS3TESTDOMODE pfnDoPEV86;
3754
3755	PFNBS3TESTDOMODE pfnDoPP16;
3756	PFNBS3TESTDOMODE pfnDoPP16_32;
3757	PFNBS3TESTDOMODE pfnDoPP16_V86;
3758	PFNBS3TESTDOMODE pfnDoPP32;
3759	PFNBS3TESTDOMODE pfnDoPP32_16;
3760	PFNBS3TESTDOMODE pfnDoPPV86;
3761
3762	PFNBS3TESTDOMODE pfnDoPAE16;
3763	PFNBS3TESTDOMODE pfnDoPAE16_32;
3764	PFNBS3TESTDOMODE pfnDoPAE16_V86;
3765	PFNBS3TESTDOMODE pfnDoPAE32;
3766	PFNBS3TESTDOMODE pfnDoPAE32_16;
3767	PFNBS3TESTDOMODE pfnDoPAEV86;
3768
3769	PFNBS3TESTDOMODE pfnDoLM16;
3770	PFNBS3TESTDOMODE pfnDoLM32;
3771	PFNBS3TESTDOMODE pfnDoLM64;
3772
3773	} BS3TESTMODEENTRY;
3774	/** Pointer to a mode sub-test entry. */
3775	typedef BS3TESTMODEENTRY const *PCBS3TESTMODEENTRY;
3776
3777	/** @def BS3TESTMODEENTRY_CMN
3778	* Produces a BS3TESTMODEENTRY initializer for common (c16,c32,c64) test
3779	* functions. */
3780	#define BS3TESTMODEENTRY_CMN(a_szTest, a_BaseNm) \
3781	{ /pszSubTest =/ a_szTest, \
3782	/RM/ RT_CONCAT(a_BaseNm, _c16), \
3783	/PE16/ RT_CONCAT(a_BaseNm, _c16), \
3784	/PE16_32/ RT_CONCAT(a_BaseNm, _c32), \
3785	/PE16_V86/ RT_CONCAT(a_BaseNm, _c16), \
3786	/PE32/ RT_CONCAT(a_BaseNm, _c32), \
3787	/PE32_16/ RT_CONCAT(a_BaseNm, _c16), \
3788	/PEV86/ RT_CONCAT(a_BaseNm, _c16), \
3789	/PP16/ RT_CONCAT(a_BaseNm, _c16), \
3790	/PP16_32/ RT_CONCAT(a_BaseNm, _c32), \
3791	/PP16_V86/ RT_CONCAT(a_BaseNm, _c16), \
3792	/PP32/ RT_CONCAT(a_BaseNm, _c32), \
3793	/PP32_16/ RT_CONCAT(a_BaseNm, _c16), \
3794	/PPV86/ RT_CONCAT(a_BaseNm, _c16), \
3795	/PAE16/ RT_CONCAT(a_BaseNm, _c16), \
3796	/PAE16_32/ RT_CONCAT(a_BaseNm, _c32), \
3797	/PAE16_V86/ RT_CONCAT(a_BaseNm, _c16), \
3798	/PAE32/ RT_CONCAT(a_BaseNm, _c32), \
3799	/PAE32_16/ RT_CONCAT(a_BaseNm, _c16), \
3800	/PAEV86/ RT_CONCAT(a_BaseNm, _c16), \
3801	/LM16/ RT_CONCAT(a_BaseNm, _c16), \
3802	/LM32/ RT_CONCAT(a_BaseNm, _c32), \
3803	/LM64/ RT_CONCAT(a_BaseNm, _c64), \
3804	}
3805
3806	/** @def BS3TESTMODE_PROTOTYPES_CMN
3807	* A set of standard protypes to go with #BS3TESTMODEENTRY_CMN. */
3808	#define BS3TESTMODE_PROTOTYPES_CMN(a_BaseNm) \
3809	FNBS3TESTDOMODE /BS3_FAR_CODE/ RT_CONCAT(a_BaseNm, _c16); \
3810	FNBS3TESTDOMODE /BS3_FAR_CODE/ RT_CONCAT(a_BaseNm, _c32); \
3811	FNBS3TESTDOMODE /BS3_FAR_CODE/ RT_CONCAT(a_BaseNm, _c64)
3812
3813	/** @def BS3TESTMODEENTRY_CMN_64
3814	* Produces a BS3TESTMODEENTRY initializer for common 64-bit test functions. */
3815	#define BS3TESTMODEENTRY_CMN_64(a_szTest, a_BaseNm) \
3816	{ /pszSubTest =/ a_szTest, \
3817	/RM/ NULL, \
3818	/PE16/ NULL, \
3819	/PE16_32/ NULL, \
3820	/PE16_V86/ NULL, \
3821	/PE32/ NULL, \
3822	/PE32_16/ NULL, \
3823	/PEV86/ NULL, \
3824	/PP16/ NULL, \
3825	/PP16_32/ NULL, \
3826	/PP16_V86/ NULL, \
3827	/PP32/ NULL, \
3828	/PP32_16/ NULL, \
3829	/PPV86/ NULL, \
3830	/PAE16/ NULL, \
3831	/PAE16_32/ NULL, \
3832	/PAE16_V86/ NULL, \
3833	/PAE32/ NULL, \
3834	/PAE32_16/ NULL, \
3835	/PAEV86/ NULL, \
3836	/LM16/ NULL, \
3837	/LM32/ NULL, \
3838	/LM64/ RT_CONCAT(a_BaseNm, _c64), \
3839	}
3840
3841	/** @def BS3TESTMODE_PROTOTYPES_CMN
3842	* Standard protype to go with #BS3TESTMODEENTRY_CMN_64. */
3843	#define BS3TESTMODE_PROTOTYPES_CMN_64(a_BaseNm) \
3844	FNBS3TESTDOMODE /BS3_FAR_CODE/ RT_CONCAT(a_BaseNm, _c64)
3845
3846	/** @def BS3TESTMODEENTRY_MODE
3847	* Produces a BS3TESTMODEENTRY initializer for a full set of mode test
3848	* functions. */
3849	#define BS3TESTMODEENTRY_MODE(a_szTest, a_BaseNm) \
3850	{ /pszSubTest =/ a_szTest, \
3851	/RM/ RT_CONCAT(a_BaseNm, _rm), \
3852	/PE16/ RT_CONCAT(a_BaseNm, _pe16), \
3853	/PE16_32/ RT_CONCAT(a_BaseNm, _pe16_32), \
3854	/PE16_V86/ RT_CONCAT(a_BaseNm, _pe16_v86), \
3855	/PE32/ RT_CONCAT(a_BaseNm, _pe32), \
3856	/PE32_16/ RT_CONCAT(a_BaseNm, _pe32_16), \
3857	/PEV86/ RT_CONCAT(a_BaseNm, _pev86), \
3858	/PP16/ RT_CONCAT(a_BaseNm, _pp16), \
3859	/PP16_32/ RT_CONCAT(a_BaseNm, _pp16_32), \
3860	/PP16_V86/ RT_CONCAT(a_BaseNm, _pp16_v86), \
3861	/PP32/ RT_CONCAT(a_BaseNm, _pp32), \
3862	/PP32_16/ RT_CONCAT(a_BaseNm, _pp32_16), \
3863	/PPV86/ RT_CONCAT(a_BaseNm, _ppv86), \
3864	/PAE16/ RT_CONCAT(a_BaseNm, _pae16), \
3865	/PAE16_32/ RT_CONCAT(a_BaseNm, _pae16_32), \
3866	/PAE16_V86/ RT_CONCAT(a_BaseNm, _pae16_v86), \
3867	/PAE32/ RT_CONCAT(a_BaseNm, _pae32), \
3868	/PAE32_16/ RT_CONCAT(a_BaseNm, _pae32_16), \
3869	/PAEV86/ RT_CONCAT(a_BaseNm, _paev86), \
3870	/LM16/ RT_CONCAT(a_BaseNm, _lm16), \
3871	/LM32/ RT_CONCAT(a_BaseNm, _lm32), \
3872	/LM64/ RT_CONCAT(a_BaseNm, _lm64), \
3873	}
3874
3875	/** @def BS3TESTMODE_PROTOTYPES_MODE
3876	* A set of standard protypes to go with #BS3TESTMODEENTRY_MODE. */
3877	#define BS3TESTMODE_PROTOTYPES_MODE(a_BaseNm) \
3878	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _rm); \
3879	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe16); \
3880	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe16_32); \
3881	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe16_v86); \
3882	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe32); \
3883	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe32_16); \
3884	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pev86); \
3885	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp16); \
3886	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp16_32); \
3887	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp16_v86); \
3888	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp32); \
3889	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp32_16); \
3890	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _ppv86); \
3891	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae16); \
3892	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae16_32); \
3893	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae16_v86); \
3894	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae32); \
3895	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae32_16); \
3896	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _paev86); \
3897	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _lm16); \
3898	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _lm32); \
3899	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _lm64)
3900
3901
3902	/**
3903	* Mode sub-test entry, max bit-count driven
3904	*
3905	* This is an alternative to BS3TESTMODEENTRY where a few workers (test drivers)
3906	* does all the work, using faster 32-bit and 64-bit code where possible. This
3907	* avoids executing workers in V8086 mode. It allows for modifying and checking
3908	* 64-bit register content when testing LM16 and LM32.
3909	*
3910	* The 16-bit workers are only used for real mode and 16-bit protected mode.
3911	* So, the 16-bit version of the code template can be stripped of anything
3912	* related to paging and/or v8086, saving code space.
3913	*/
3914	typedef struct BS3TESTMODEBYMAXENTRY
3915	{
3916	/** The sub-test name to be passed to Bs3TestSub if not NULL. */
3917	const char * BS3_FAR pszSubTest;
3918
3919	PFNBS3TESTDOMODE pfnDoRM;
3920	PFNBS3TESTDOMODE pfnDoPE16;
3921	PFNBS3TESTDOMODE pfnDoPE16_32;
3922	PFNBS3TESTDOMODE pfnDoPE32;
3923	PFNBS3TESTDOMODE pfnDoPP16_32;
3924	PFNBS3TESTDOMODE pfnDoPP32;
3925	PFNBS3TESTDOMODE pfnDoPAE16_32;
3926	PFNBS3TESTDOMODE pfnDoPAE32;
3927	PFNBS3TESTDOMODE pfnDoLM64;
3928
3929	bool fDoRM : 1;
3930
3931	bool fDoPE16 : 1;
3932	bool fDoPE16_32 : 1;
3933	bool fDoPE16_V86 : 1;
3934	bool fDoPE32 : 1;
3935	bool fDoPE32_16 : 1;
3936	bool fDoPEV86 : 1;
3937
3938	bool fDoPP16 : 1;
3939	bool fDoPP16_32 : 1;
3940	bool fDoPP16_V86 : 1;
3941	bool fDoPP32 : 1;
3942	bool fDoPP32_16 : 1;
3943	bool fDoPPV86 : 1;
3944
3945	bool fDoPAE16 : 1;
3946	bool fDoPAE16_32 : 1;
3947	bool fDoPAE16_V86 : 1;
3948	bool fDoPAE32 : 1;
3949	bool fDoPAE32_16 : 1;
3950	bool fDoPAEV86 : 1;
3951
3952	bool fDoLM16 : 1;
3953	bool fDoLM32 : 1;
3954	bool fDoLM64 : 1;
3955
3956	} BS3TESTMODEBYMAXENTRY;
3957	/** Pointer to a mode-by-max sub-test entry. */
3958	typedef BS3TESTMODEBYMAXENTRY const *PCBS3TESTMODEBYMAXENTRY;
3959
3960	/** @def BS3TESTMODEBYMAXENTRY_CMN
3961	* Produces a BS3TESTMODEBYMAXENTRY initializer for common (c16,c32,c64) test
3962	* functions. */
3963	#define BS3TESTMODEBYMAXENTRY_CMN(a_szTest, a_BaseNm) \
3964	{ /pszSubTest =/ a_szTest, \
3965	/RM/ RT_CONCAT(a_BaseNm, _c16), \
3966	/PE16/ RT_CONCAT(a_BaseNm, _c16), \
3967	/PE16_32/ RT_CONCAT(a_BaseNm, _c32), \
3968	/PE32/ RT_CONCAT(a_BaseNm, _c32), \
3969	/PP16_32/ RT_CONCAT(a_BaseNm, _c32), \
3970	/PP32/ RT_CONCAT(a_BaseNm, _c32), \
3971	/PAE16_32/ RT_CONCAT(a_BaseNm, _c32), \
3972	/PAE32/ RT_CONCAT(a_BaseNm, _c32), \
3973	/LM64/ RT_CONCAT(a_BaseNm, _c64), \
3974	/fDoRM/ true, \
3975	/fDoPE16/ true, \
3976	/fDoPE16_32/ true, \
3977	/fDoPE16_V86/ true, \
3978	/fDoPE32/ true, \
3979	/fDoPE32_16/ true, \
3980	/fDoPEV86/ true, \
3981	/fDoPP16/ true, \
3982	/fDoPP16_32/ true, \
3983	/fDoPP16_V86/ true, \
3984	/fDoPP32/ true, \
3985	/fDoPP32_16/ true, \
3986	/fDoPPV86/ true, \
3987	/fDoPAE16/ true, \
3988	/fDoPAE16_32/ true, \
3989	/fDoPAE16_V86/ true, \
3990	/fDoPAE32/ true, \
3991	/fDoPAE32_16/ true, \
3992	/fDoPAEV86/ true, \
3993	/fDoLM16/ true, \
3994	/fDoLM32/ true, \
3995	/fDoLM64/ true, \
3996	}
3997
3998	/** @def BS3TESTMODEBYMAX_PROTOTYPES_CMN
3999	* A set of standard protypes to go with #BS3TESTMODEBYMAXENTRY_CMN. */
4000	#define BS3TESTMODEBYMAX_PROTOTYPES_CMN(a_BaseNm) \
4001	FNBS3TESTDOMODE /BS3_FAR_CODE/ RT_CONCAT(a_BaseNm, _c16); \
4002	FNBS3TESTDOMODE /BS3_FAR_CODE/ RT_CONCAT(a_BaseNm, _c32); \
4003	FNBS3TESTDOMODE /BS3_FAR_CODE/ RT_CONCAT(a_BaseNm, _c64)
4004
4005
4006	/** @def BS3TESTMODEBYMAXENTRY_MODE
4007	* Produces a BS3TESTMODEBYMAXENTRY initializer for a full set of mode test
4008	* functions. */
4009	#define BS3TESTMODEBYMAXENTRY_MODE(a_szTest, a_BaseNm) \
4010	{ /pszSubTest =/ a_szTest, \
4011	/RM/ RT_CONCAT(a_BaseNm, _rm), \
4012	/PE16/ RT_CONCAT(a_BaseNm, _pe16), \
4013	/PE16_32/ RT_CONCAT(a_BaseNm, _pe16_32), \
4014	/PE32/ RT_CONCAT(a_BaseNm, _pe32), \
4015	/PP16_32/ RT_CONCAT(a_BaseNm, _pp16_32), \
4016	/PP32/ RT_CONCAT(a_BaseNm, _pp32), \
4017	/PAE16_32/ RT_CONCAT(a_BaseNm, _pae16_32), \
4018	/PAE32/ RT_CONCAT(a_BaseNm, _pae32), \
4019	/LM64/ RT_CONCAT(a_BaseNm, _lm64), \
4020	/fDoRM/ true, \
4021	/fDoPE16/ true, \
4022	/fDoPE16_32/ true, \
4023	/fDoPE16_V86/ true, \
4024	/fDoPE32/ true, \
4025	/fDoPE32_16/ true, \
4026	/fDoPEV86/ true, \
4027	/fDoPP16/ true, \
4028	/fDoPP16_32/ true, \
4029	/fDoPP16_V86/ true, \
4030	/fDoPP32/ true, \
4031	/fDoPP32_16/ true, \
4032	/fDoPPV86/ true, \
4033	/fDoPAE16/ true, \
4034	/fDoPAE16_32/ true, \
4035	/fDoPAE16_V86/ true, \
4036	/fDoPAE32/ true, \
4037	/fDoPAE32_16/ true, \
4038	/fDoPAEV86/ true, \
4039	/fDoLM16/ true, \
4040	/fDoLM32/ true, \
4041	/fDoLM64/ true, \
4042	}
4043
4044	/** @def BS3TESTMODEBYMAX_PROTOTYPES_MODE
4045	* A set of standard protypes to go with #BS3TESTMODEBYMAXENTRY_MODE. */
4046	#define BS3TESTMODEBYMAX_PROTOTYPES_MODE(a_BaseNm) \
4047	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _rm); \
4048	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe16); \
4049	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe16_32); \
4050	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe32); \
4051	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp16_32); \
4052	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp32); \
4053	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae16_32); \
4054	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae32); \
4055	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _lm64)
4056
4057
4058	/**
4059	* One worker drives all modes.
4060	*
4061	* This is an alternative to BS3TESTMODEENTRY where one worker, typically
4062	* 16-bit, does all the test driver work. It's called repeatedly from all
4063	* the modes being tested.
4064	*/
4065	typedef struct BS3TESTMODEBYONEENTRY
4066	{
4067	const char * BS3_FAR pszSubTest;
4068	PFNBS3TESTDOMODE pfnWorker;
4069	/** BS3TESTMODEBYONEENTRY_F_XXX. */
4070	uint32_t fFlags;
4071	} BS3TESTMODEBYONEENTRY;
4072	/** Pointer to a mode-by-one sub-test entry. */
4073	typedef BS3TESTMODEBYONEENTRY const *PCBS3TESTMODEBYONEENTRY;
4074
4075	/** @name BS3TESTMODEBYONEENTRY_F_XXX - flags.
4076	* @{ */
4077	/** Only test modes that has paging enabled. */
4078	#define BS3TESTMODEBYONEENTRY_F_ONLY_PAGING RT_BIT_32(0)
4079	/** Minimal mode selection. */
4080	#define BS3TESTMODEBYONEENTRY_F_MINIMAL RT_BIT_32(1)
4081	/** The 32-bit worker is ready to handle real-mode by mode switching. */
4082	#define BS3TESTMODEBYONEENTRY_F_REAL_MODE_READY RT_BIT_32(2)
4083	/** @} */
4084
4085
4086	/**
4087	* Sets the full GDTR register.
4088	*
4089	* @param cbLimit The limit.
4090	* @param uBase The base address - 24, 32 or 64 bit depending on the
4091	* CPU mode.
4092	*/
4093	BS3_CMN_PROTO_NOSB(void, Bs3UtilSetFullGdtr,(uint16_t cbLimit, uint64_t uBase));
4094
4095	/**
4096	* Sets the full IDTR register.
4097	*
4098	* @param cbLimit The limit.
4099	* @param uBase The base address - 24, 32 or 64 bit depending on the
4100	* CPU mode.
4101	*/
4102	BS3_CMN_PROTO_NOSB(void, Bs3UtilSetFullIdtr,(uint16_t cbLimit, uint64_t uBase));
4103
4104
4105	/** @} */
4106
4107
4108	/**
4109	* Initializes all of boot sector kit \#3.
4110	*/
4111	BS3_DECL(void) Bs3InitAll_rm(void);
4112
4113	/**
4114	* Initializes the REAL and TILED memory pools.
4115	*
4116	* For proper operation on OLDer CPUs, call #Bs3CpuDetect_mmm first.
4117	*/
4118	BS3_DECL_FAR(void) Bs3InitMemory_rm_far(void);
4119
4120	/**
4121	* Initialized the X0TEXT16 and X1TEXT16 GDT entries.
4122	*/
4123	BS3_DECL_FAR(void) Bs3InitGdt_rm_far(void);
4124
4125
4126
4127	/** @defgroup grp_bs3kit_mode Mode Specific Functions and Data
4128	*
4129	* The mode specific functions come in bit count variations and CPU mode
4130	* variations. The bs3kit-template-header.h/mac defines the BS3_NM macro to
4131	* mangle a function or variable name according to the target CPU mode. In
4132	* non-templated code, it's common to spell the name out in full.
4133	*
4134	* @{
4135	*/
4136
4137
4138	/** @def BS3_MODE_PROTO_INT
4139	* Internal macro for emitting prototypes for mode functions.
4140	*
4141	* @param a_RetType The return type.
4142	* @param a_Name The function basename.
4143	* @param a_Params The parameter list (in parentheses).
4144	* @sa BS3_MODE_PROTO_STUB, BS3_MODE_PROTO_NOSB
4145	*/
4146	#define BS3_MODE_PROTO_INT(a_RetType, a_Name, a_Params) \
4147	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_rm) a_Params; \
4148	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pe16) a_Params; \
4149	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pe16_32) a_Params; \
4150	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pe16_v86) a_Params; \
4151	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pe32) a_Params; \
4152	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pe32_16) a_Params; \
4153	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pev86) a_Params; \
4154	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pp16) a_Params; \
4155	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pp16_32) a_Params; \
4156	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pp16_v86) a_Params; \
4157	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pp32) a_Params; \
4158	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pp32_16) a_Params; \
4159	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_ppv86) a_Params; \
4160	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pae16) a_Params; \
4161	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pae16_32) a_Params; \
4162	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pae16_v86) a_Params; \
4163	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pae32) a_Params; \
4164	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pae32_16) a_Params; \
4165	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_paev86) a_Params; \
4166	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_lm16) a_Params; \
4167	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_lm32) a_Params; \
4168	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_lm64) a_Params; \
4169	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_rm_far) a_Params; \
4170	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pe16_far) a_Params; \
4171	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pe16_v86_far) a_Params; \
4172	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pe32_16_far) a_Params; \
4173	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pev86_far) a_Params; \
4174	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pp16_far) a_Params; \
4175	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pp16_v86_far) a_Params; \
4176	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pp32_16_far) a_Params; \
4177	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_ppv86_far) a_Params; \
4178	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pae16_far) a_Params; \
4179	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pae16_v86_far)a_Params; \
4180	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pae32_16_far) a_Params; \
4181	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_paev86_far) a_Params; \
4182	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_lm16_far) a_Params
4183
4184	/** @def BS3_MODE_PROTO_STUB
4185	* Macro for prototyping all the variations of a mod function with automatic
4186	* near -> far stub.
4187	*
4188	* @param a_RetType The return type.
4189	* @param a_Name The function basename.
4190	* @param a_Params The parameter list (in parentheses).
4191	* @sa BS3_MODE_PROTO_STUB, BS3_MODE_PROTO_NOSB
4192	*/
4193	#define BS3_MODE_PROTO_STUB(a_RetType, a_Name, a_Params) BS3_MODE_PROTO_INT(a_RetType, a_Name, a_Params)
4194
4195	/** @def BS3_MODE_PROTO_STUB
4196	* Macro for prototyping all the variations of a mod function without any
4197	* near -> far stub.
4198	*
4199	* @param a_RetType The return type.
4200	* @param a_Name The function basename.
4201	* @param a_Params The parameter list (in parentheses).
4202	* @sa BS3_MODE_PROTO_STUB, BS3_MODE_PROTO_NOSB
4203	*/
4204	#define BS3_MODE_PROTO_NOSB(a_RetType, a_Name, a_Params) BS3_MODE_PROTO_INT(a_RetType, a_Name, a_Params)
4205
4206
4207	/**
4208	* Macro for reducing typing.
4209	*
4210	* Doxygen knows how to expand this, well, kind of.
4211	*
4212	* @remarks Variables instantiated in assembly code should define two labels,
4213	* with and without leading underscore. Variables instantiated from
4214	* C/C++ code doesn't need to as the object file convert does this for
4215	* 64-bit object files.
4216	*/
4217	#define BS3_MODE_EXPAND_EXTERN_DATA16(a_VarType, a_VarName, a_Suffix) \
4218	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_rm) a_Suffix; \
4219	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pe16) a_Suffix; \
4220	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pe16_32) a_Suffix; \
4221	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pe16_v86) a_Suffix; \
4222	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pe32) a_Suffix; \
4223	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pe32_16) a_Suffix; \
4224	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pev86) a_Suffix; \
4225	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pp16) a_Suffix; \
4226	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pp16_32) a_Suffix; \
4227	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pp16_v86) a_Suffix; \
4228	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pp32) a_Suffix; \
4229	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pp32_16) a_Suffix; \
4230	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_ppv86) a_Suffix; \
4231	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pae16) a_Suffix; \
4232	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pae16_32) a_Suffix; \
4233	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pae16_v86)a_Suffix; \
4234	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pae32) a_Suffix; \
4235	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pae32_16) a_Suffix; \
4236	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_paev86) a_Suffix; \
4237	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_lm16) a_Suffix; \
4238	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_lm32) a_Suffix; \
4239	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_lm64) a_Suffix
4240
4241
4242	/** The TMPL_MODE_STR value for each mode.
4243	* These are all in DATA16 so they can be accessed from any code. */
4244	BS3_MODE_EXPAND_EXTERN_DATA16(const char, g_szBs3ModeName, []);
4245	/** The TMPL_MODE_LNAME value for each mode.
4246	* These are all in DATA16 so they can be accessed from any code. */
4247	BS3_MODE_EXPAND_EXTERN_DATA16(const char, g_szBs3ModeNameShortLower, []);
4248
4249
4250	/**
4251	* Basic CPU detection.
4252	*
4253	* This sets the #g_uBs3CpuDetected global variable to the return value.
4254	*
4255	* @returns BS3CPU_XXX value with the BS3CPU_F_CPUID flag set depending on
4256	* capabilities.
4257	*/
4258	BS3_MODE_PROTO_NOSB(uint8_t, Bs3CpuDetect,(void));
4259
4260	/** @name BS3CPU_XXX - CPU detected by BS3CpuDetect_c16() and friends.
4261	* @{ */
4262	#define BS3CPU_8086 UINT16_C(0x0001) /*< Both 8086 and 8088. /
4263	#define BS3CPU_V20 UINT16_C(0x0002) /*< Both NEC V20, V30 and relatives. /
4264	#define BS3CPU_80186 UINT16_C(0x0003) /*< Both 80186 and 80188. /
4265	#define BS3CPU_80286 UINT16_C(0x0004)
4266	#define BS3CPU_80386 UINT16_C(0x0005)
4267	#define BS3CPU_80486 UINT16_C(0x0006)
4268	#define BS3CPU_Pentium UINT16_C(0x0007)
4269	#define BS3CPU_PPro UINT16_C(0x0008)
4270	#define BS3CPU_PProOrNewer UINT16_C(0x0009)
4271	/** CPU type mask. This is a full byte so it's possible to use byte access
4272	* without and AND'ing to get the type value. */
4273	#define BS3CPU_TYPE_MASK UINT16_C(0x00ff)
4274	/** Flag indicating that the CPUID instruction is supported by the CPU. */
4275	#define BS3CPU_F_CPUID UINT16_C(0x0100)
4276	/** Flag indicating that extend CPUID leaves are available (at least two). */
4277	#define BS3CPU_F_CPUID_EXT_LEAVES UINT16_C(0x0200)
4278	/** Flag indicating that the CPU supports PAE. */
4279	#define BS3CPU_F_PAE UINT16_C(0x0400)
4280	/** Flag indicating that the CPU supports the page size extension (4MB pages). */
4281	#define BS3CPU_F_PSE UINT16_C(0x0800)
4282	/** Flag indicating that the CPU supports long mode. */
4283	#define BS3CPU_F_LONG_MODE UINT16_C(0x1000)
4284	/** Flag indicating that the CPU supports NX. */
4285	#define BS3CPU_F_NX UINT16_C(0x2000)
4286	/** @} */
4287
4288	/** The return value of #Bs3CpuDetect_mmm. (Initial value is BS3CPU_TYPE_MASK.) */
4289	extern uint16_t g_uBs3CpuDetected;
4290
4291	/**
4292	* Call 32-bit prot mode C function.
4293	*
4294	* This switches to 32-bit mode and calls the 32-bit @a fpfnCall C code with @a
4295	* cbParams on the stack, then returns in the original mode. When called in
4296	* real mode, this will switch to PE32.
4297	*
4298	* @returns 32-bit status code if the function returned anything.
4299	* @param fpfnCall Address of the 32-bit C function to call. When
4300	* called from 16-bit code, this is a far real mode
4301	* function pointer, i.e. as fixed up by the linker.
4302	* In 32-bit and 64-bit code, this is a flat address.
4303	* @param cbParams The size of the parameter list, in bytes.
4304	* @param ... The parameters.
4305	* @sa Bs3SwitchFromV86To16BitAndCallC
4306	*
4307	* @remarks WARNING! This probably doesn't work in 64-bit mode yet.
4308	* Only tested for 16-bit real mode.
4309	*/
4310	BS3_MODE_PROTO_STUB(int32_t, Bs3SwitchTo32BitAndCallC,(FPFNBS3FAR fpfnCall, unsigned cbParams, ...));
4311
4312	/**
4313	* Initializes trap handling for the current system.
4314	*
4315	* Calls the appropriate Bs3Trap16Init, Bs3Trap32Init or Bs3Trap64Init function.
4316	*/
4317	BS3_MODE_PROTO_STUB(void, Bs3TrapInit,(void));
4318
4319	/**
4320	* Executes the array of tests in every possibly mode.
4321	*
4322	* @param paEntries The mode sub-test entries.
4323	* @param cEntries The number of sub-test entries.
4324	*/
4325	BS3_MODE_PROTO_NOSB(void, Bs3TestDoModes,(PCBS3TESTMODEENTRY paEntries, size_t cEntries));
4326
4327	/**
4328	* Executes the array of tests in every possibly mode, unified driver.
4329	*
4330	* This requires much less code space than Bs3TestDoModes as there is only one
4331	* instace of each sub-test driver code, instead of 3 (cmn) or 22 (per-mode)
4332	* copies.
4333	*
4334	* @param paEntries The mode sub-test-by-one entries.
4335	* @param cEntries The number of sub-test-by-one entries.
4336	* @param fFlags BS3TESTMODEBYONEENTRY_F_XXX.
4337	*/
4338	BS3_MODE_PROTO_NOSB(void, Bs3TestDoModesByOne,(PCBS3TESTMODEBYONEENTRY paEntries, size_t cEntries, uint32_t fFlags));
4339
4340	/**
4341	* Executes the array of tests in every possibly mode, using the max bit-count
4342	* worker for each.
4343	*
4344	* @param paEntries The mode sub-test entries.
4345	* @param cEntries The number of sub-test entries.
4346	*/
4347	BS3_MODE_PROTO_NOSB(void, Bs3TestDoModesByMax,(PCBS3TESTMODEBYMAXENTRY paEntries, size_t cEntries));
4348
4349	/** @} */
4350
4351
4352	/** @defgroup grp_bs3kit_bios_int15 BIOS - int 15h
4353	* @{ */
4354
4355	/** An INT15E820 data entry. */
4356	typedef struct INT15E820ENTRY
4357	{
4358	uint64_t uBaseAddr;
4359	uint64_t cbRange;
4360	/** Memory type this entry describes, see INT15E820_TYPE_XXX. */
4361	uint32_t uType;
4362	/** Optional. */
4363	uint32_t fAcpi3;
4364	} INT15E820ENTRY;
4365	AssertCompileSize(INT15E820ENTRY,24);
4366
4367
4368	/** @name INT15E820_TYPE_XXX - Memory types returned by int 15h function 0xe820.
4369	* @{ */
4370	#define INT15E820_TYPE_USABLE 1 /*< Usable RAM. /
4371	#define INT15E820_TYPE_RESERVED 2 /*< Reserved by the system, unusable. /
4372	#define INT15E820_TYPE_ACPI_RECLAIMABLE 3 /*< ACPI reclaimable memory, whatever that means. /
4373	#define INT15E820_TYPE_ACPI_NVS 4 /*< ACPI non-volatile storage? /
4374	#define INT15E820_TYPE_BAD 5 /*< Bad memory, unusable. /
4375	/** @} */
4376
4377
4378	/**
4379	* Performs an int 15h function 0xe820 call.
4380	*
4381	* @returns Success indicator.
4382	* @param pEntry The return buffer.
4383	* @param pcbEntry Input: The size of the buffer (min 20 bytes);
4384	* Output: The size of the returned data.
4385	* @param puContinuationValue Where to get and return the continuation value (EBX)
4386	* Set to zero the for the first call. Returned as zero
4387	* after the last entry.
4388	*/
4389	BS3_MODE_PROTO_STUB(bool, Bs3BiosInt15hE820,(INT15E820ENTRY BS3_FAR pEntry, uint32_t BS3_FAR pcbEntry,
4390	uint32_t BS3_FAR *puContinuationValue));
4391
4392	/**
4393	* Performs an int 15h function 0x88 call.
4394	*
4395	* @returns UINT32_MAX on failure, number of KBs above 1MB otherwise.
4396	*/
4397	#if ARCH_BITS != 16 \|\| !defined(BS3_BIOS_INLINE_RM)
4398	BS3_MODE_PROTO_STUB(uint32_t, Bs3BiosInt15h88,(void));
4399	#else
4400	BS3_DECL(uint32_t) Bs3BiosInt15h88(void);
4401	# pragma aux Bs3BiosInt15h88 = \
4402	".286" \
4403	"clc" \
4404	"mov ax, 08800h" \
4405	"int 15h" \
4406	"jc failed" \
4407	"xor dx, dx" \
4408	"jmp done" \
4409	"failed:" \
4410	"xor ax, ax" \
4411	"dec ax" \
4412	"mov dx, ax" \
4413	"done:" \
4414	value [ax dx] \
4415	modify exact [ax bx cx dx es];
4416	#endif
4417
4418	/** @} */
4419
4420
4421	/** @} */
4422
4423	RT_C_DECLS_END
4424
4425
4426	/*
4427	* Include default function symbol mangling.
4428	*/
4429	#include "bs3kit-mangling-code.h"
4430
4431	/*
4432	* Change 16-bit text segment if requested.
4433	*/
4434	#if defined(BS3_USE_ALT_16BIT_TEXT_SEG) && ARCH_BITS == 16 && !defined(BS3_DONT_CHANGE_TEXT_SEG)
4435	# if (defined(BS3_USE_RM_TEXT_SEG) + defined(BS3_USE_X0_TEXT_SEG) + defined(BS3_USE_X1_TEXT_SEG)) != 1
4436	# error "Cannot set more than one alternative 16-bit text segment!"
4437	# elif defined(BS3_USE_RM_TEXT_SEG)
4438	# pragma code_seg("BS3RMTEXT16", "BS3CLASS16RMCODE")
4439	# elif defined(BS3_USE_X0_TEXT_SEG)
4440	# pragma code_seg("BS3X0TEXT16", "BS3CLASS16X0CODE")
4441	# elif defined(BS3_USE_X1_TEXT_SEG)
4442	# pragma code_seg("BS3X1TEXT16", "BS3CLASS16X1CODE")
4443	# else
4444	# error "Huh? Which alternative text segment did you want again?"
4445	# endif
4446	#endif
4447
4448	#endif /* !BS3KIT_INCLUDED_bs3kit_h */
4449

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3kit.h@ 97320

Download in other formats: