bs3kit.h@ 64367

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1	/* $Id: bs3kit.h 64367 2016-10-22 17:25:58Z vboxsync $ */
2	/** @file
3	* BS3Kit - structures, symbols, macros and stuff.
4	*/
5
6	/*
7	* Copyright (C) 2007-2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27	#ifndef ___bs3kit_h
28	#define ___bs3kit_h
29
30	#ifndef DOXYGEN_RUNNING
31	# define IN_RING0
32	#endif
33	#define RT_NO_STRICT /* Don't drag in IPRT assertion code in inline code we may use (asm.h). */
34	#include <iprt/cdefs.h>
35	#include <iprt/types.h>
36	#ifndef DOXYGEN_RUNNING
37	# undef IN_RING0
38	#endif
39
40
41
42	/** @def BS3_USE_ALT_16BIT_TEXT_SEG
43	* @ingroup grp_bs3kit
44	* Combines the BS3_USE_RM_TEXT_SEG, BS3_USE_X0_TEXT_SEG, and
45	* BS3_USE_X1_TEXT_SEG indicators into a single one.
46	*/
47	#if defined(BS3_USE_RM_TEXT_SEG) \|\| defined(BS3_USE_X0_TEXT_SEG) \|\| defined(BS3_USE_X1_TEXT_SEG) \|\| defined(DOXYGEN_RUNNING)
48	# define BS3_USE_ALT_16BIT_TEXT_SEG
49	#else
50	# undef BS3_USE_ALT_16BIT_TEXT_SEG
51	#endif
52
53	/** @def BS3_USE_X0_TEXT_SEG
54	* @ingroup grp_bs3kit
55	* Emit 16-bit code to the BS3X0TEXT16 segment - ignored for 32-bit and 64-bit.
56	*
57	* Calling directly into the BS3X0TEXT16 segment is only possible in real-mode
58	* and v8086 mode. In protected mode the real far pointer have to be converted
59	* to a protected mode pointer that uses BS3_SEL_X0TEXT16_CS, Bs3TestDoModes and
60	* associates does this automatically.
61	*/
62	#ifdef DOXYGEN_RUNNING
63	# define BS3_USE_X0_TEXT_SEG
64	#endif
65
66	/** @def BS3_USE_X1_TEXT_SEG
67	* @ingroup grp_bs3kit
68	* Emit 16-bit code to the BS3X1TEXT16 segment - ignored for 32-bit and 64-bit.
69	*
70	* Calling directly into the BS3X1TEXT16 segment is only possible in real-mode
71	* and v8086 mode. In protected mode the real far pointer have to be converted
72	* to a protected mode pointer that uses BS3_SEL_X1TEXT16_CS, Bs3TestDoModes and
73	* associates does this automatically.
74	*/
75	#ifdef DOXYGEN_RUNNING
76	# define BS3_USE_X1_TEXT_SEG
77	#endif
78
79	/** @def BS3_USE_RM_TEXT_SEG
80	* @ingroup grp_bs3kit
81	* Emit 16-bit code to the BS3RMTEXT16 segment - ignored for 32-bit and 64-bit.
82	*
83	* This segment is normally used for real-mode only code, though
84	* BS3_SEL_RMTEXT16_CS can be used to call it from protected mode. Unlike the
85	* BS3X0TEXT16 and BS3X1TEXT16 segments which are empty by default, this segment
86	* is used by common BS3Kit code.
87	*/
88	#ifdef DOXYGEN_RUNNING
89	# define BS3_USE_X0_TEXT_SEG
90	#endif
91
92	/** @def BS3_MODEL_FAR_CODE
93	* @ingroup grp_bs3kit
94	* Default compiler model indicates far code.
95	*/
96	#ifdef DOXYGEN_RUNNING
97	# define BS3_MODEL_FAR_CODE
98	#elif !defined(BS3_MODEL_FAR_CODE) && (defined(__LARGE__) \|\| defined(__MEDIUM__) \|\| defined(__HUGE__)) && ARCH_BITS == 16
99	# define BS3_MODEL_FAR_CODE
100	#endif
101
102
103	/*
104	* We normally don't want the noreturn / aborts attributes as they mess up stack traces.
105	*
106	* Note! pragma aux <fnname> aborts can only be used with functions
107	* implemented in C and functions that does not have parameters.
108	*/
109	#define BS3_KIT_WITH_NO_RETURN
110	#ifndef BS3_KIT_WITH_NO_RETURN
111	# undef DECL_NO_RETURN
112	# define DECL_NO_RETURN(type) type
113	#endif
114
115
116	/*
117	* We may want to reuse some IPRT code in the common name space, so we
118	* redefine the RT_MANGLER to work like BS3_CMN_NM. (We cannot use
119	* BS3_CMN_NM yet, as we need to include IPRT headers with function
120	* declarations before we can define it. Thus the duplciate effort.)
121	*/
122	#if ARCH_BITS == 16
123	# undef RTCALL
124	# if defined(BS3_USE_ALT_16BIT_TEXT_SEG)
125	# define RTCALL __cdecl __far
126	# define RT_MANGLER(a_Name) RT_CONCAT(a_Name,_f16)
127	# else
128	# define RTCALL __cdecl __near
129	# define RT_MANGLER(a_Name) RT_CONCAT(a_Name,_c16)
130	# endif
131	#else
132	# define RT_MANGLER(a_Name) RT_CONCAT3(a_Name,_c,ARCH_BITS)
133	#endif
134	#include <iprt/mangling.h>
135	#include <iprt/x86.h>
136	#include <iprt/err.h>
137
138	/*
139	* Include data symbol mangling (function mangling/mapping must be done
140	* after the protypes).
141	*/
142	#include "bs3kit-mangling-data.h"
143
144
145
146	RT_C_DECLS_BEGIN
147
148	/** @defgroup grp_bs3kit BS3Kit - Boot Sector Kit \#3
149	*
150	* The BS3Kit is a framework for bare metal floppy/usb image tests,
151	* see the @ref pg_bs3kit "doc page" for more.
152	*
153	* @{ */
154
155	/** @name Execution modes.
156	* @{ */
157	#define BS3_MODE_INVALID UINT8_C(0x00)
158	#define BS3_MODE_RM UINT8_C(0x01) /*< real mode. /
159	#define BS3_MODE_PE16 UINT8_C(0x11) /*< 16-bit protected mode kernel+tss, running 16-bit code, unpaged. /
160	#define BS3_MODE_PE16_32 UINT8_C(0x12) /*< 16-bit protected mode kernel+tss, running 32-bit code, unpaged. /
161	#define BS3_MODE_PE16_V86 UINT8_C(0x18) /*< 16-bit protected mode kernel+tss, running virtual 8086 mode code, unpaged. /
162	#define BS3_MODE_PE32 UINT8_C(0x22) /*< 32-bit protected mode kernel+tss, running 32-bit code, unpaged. /
163	#define BS3_MODE_PE32_16 UINT8_C(0x21) /*< 32-bit protected mode kernel+tss, running 16-bit code, unpaged. /
164	#define BS3_MODE_PEV86 UINT8_C(0x28) /*< 32-bit protected mode kernel+tss, running virtual 8086 mode code, unpaged. /
165	#define BS3_MODE_PP16 UINT8_C(0x31) /*< 16-bit protected mode kernel+tss, running 16-bit code, paged. /
166	#define BS3_MODE_PP16_32 UINT8_C(0x32) /*< 16-bit protected mode kernel+tss, running 32-bit code, paged. /
167	#define BS3_MODE_PP16_V86 UINT8_C(0x38) /*< 16-bit protected mode kernel+tss, running virtual 8086 mode code, paged. /
168	#define BS3_MODE_PP32 UINT8_C(0x42) /*< 32-bit protected mode kernel+tss, running 32-bit code, paged. /
169	#define BS3_MODE_PP32_16 UINT8_C(0x41) /*< 32-bit protected mode kernel+tss, running 16-bit code, paged. /
170	#define BS3_MODE_PPV86 UINT8_C(0x48) /*< 32-bit protected mode kernel+tss, running virtual 8086 mode code, paged. /
171	#define BS3_MODE_PAE16 UINT8_C(0x51) /*< 16-bit protected mode kernel+tss, running 16-bit code, PAE paging. /
172	#define BS3_MODE_PAE16_32 UINT8_C(0x52) /*< 16-bit protected mode kernel+tss, running 32-bit code, PAE paging. /
173	#define BS3_MODE_PAE16_V86 UINT8_C(0x58) /*< 16-bit protected mode kernel+tss, running virtual 8086 mode, PAE paging. /
174	#define BS3_MODE_PAE32 UINT8_C(0x62) /*< 32-bit protected mode kernel+tss, running 32-bit code, PAE paging. /
175	#define BS3_MODE_PAE32_16 UINT8_C(0x61) /*< 32-bit protected mode kernel+tss, running 16-bit code, PAE paging. /
176	#define BS3_MODE_PAEV86 UINT8_C(0x68) /*< 32-bit protected mode kernel+tss, running virtual 8086 mode, PAE paging. /
177	#define BS3_MODE_LM16 UINT8_C(0x71) /*< 16-bit long mode (paged), kernel+tss always 64-bit. /
178	#define BS3_MODE_LM32 UINT8_C(0x72) /*< 32-bit long mode (paged), kernel+tss always 64-bit. /
179	#define BS3_MODE_LM64 UINT8_C(0x74) /*< 64-bit long mode (paged), kernel+tss always 64-bit. /
180
181	#define BS3_MODE_CODE_MASK UINT8_C(0x0f) /*< Running code mask. /
182	#define BS3_MODE_CODE_16 UINT8_C(0x01) /*< Running 16-bit code. /
183	#define BS3_MODE_CODE_32 UINT8_C(0x02) /*< Running 32-bit code. /
184	#define BS3_MODE_CODE_64 UINT8_C(0x04) /*< Running 64-bit code. /
185	#define BS3_MODE_CODE_V86 UINT8_C(0x08) /*< Running 16-bit virtual 8086 code. /
186
187	#define BS3_MODE_SYS_MASK UINT8_C(0xf0) /*< kernel+tss mask. /
188	#define BS3_MODE_SYS_RM UINT8_C(0x00) /*< Real mode kernel+tss. /
189	#define BS3_MODE_SYS_PE16 UINT8_C(0x10) /*< 16-bit protected mode kernel+tss. /
190	#define BS3_MODE_SYS_PE32 UINT8_C(0x20) /*< 32-bit protected mode kernel+tss. /
191	#define BS3_MODE_SYS_PP16 UINT8_C(0x30) /*< 16-bit paged protected mode kernel+tss. /
192	#define BS3_MODE_SYS_PP32 UINT8_C(0x40) /*< 32-bit paged protected mode kernel+tss. /
193	#define BS3_MODE_SYS_PAE16 UINT8_C(0x50) /*< 16-bit PAE paged protected mode kernel+tss. /
194	#define BS3_MODE_SYS_PAE32 UINT8_C(0x60) /*< 32-bit PAE paged protected mode kernel+tss. /
195	#define BS3_MODE_SYS_LM UINT8_C(0x70) /*< 64-bit (paged) long mode protected mode kernel+tss. /
196
197	/** Whether the mode has paging enabled. */
198	#define BS3_MODE_IS_PAGED(a_fMode) ((a_fMode) >= BS3_MODE_PP16)
199	/** Whether the mode has legacy paging enabled (legacy as opposed to PAE or
200	* long mode). */
201	#define BS3_MODE_IS_LEGACY_PAGING(a_fMode) ((a_fMode) >= BS3_MODE_PP16 && (a_fMode) < BS3_MODE_PAE16)
202
203	/** Whether the mode is running v8086 code. */
204	#define BS3_MODE_IS_V86(a_fMode) (((a_fMode) & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_V86)
205	/** Whether the we're executing in real mode or v8086 mode. */
206	#define BS3_MODE_IS_RM_OR_V86(a_fMode) ((a_fMode) == BS3_MODE_RM \|\| BS3_MODE_IS_V86(a_fMode))
207	/** Whether the mode is running 16-bit code, except v8086. */
208	#define BS3_MODE_IS_16BIT_CODE_NO_V86(a_fMode) (((a_fMode) & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_16)
209	/** Whether the mode is running 16-bit code (includes v8086). */
210	#define BS3_MODE_IS_16BIT_CODE(a_fMode) (BS3_MODE_IS_16BIT_CODE_NO_V86(a_fMode) \|\| BS3_MODE_IS_V86(a_fMode))
211	/** Whether the mode is running 32-bit code. */
212	#define BS3_MODE_IS_32BIT_CODE(a_fMode) (((a_fMode) & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_32)
213	/** Whether the mode is running 64-bit code. */
214	#define BS3_MODE_IS_64BIT_CODE(a_fMode) (((a_fMode) & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_64)
215
216	/** Whether the system is in real mode. */
217	#define BS3_MODE_IS_RM_SYS(a_fMode) (((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_RM)
218	/** Whether the system is some 16-bit mode that isn't real mode. */
219	#define BS3_MODE_IS_16BIT_SYS_NO_RM(a_fMode) ( ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PE16 \
220	\|\| ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PP16 \
221	\|\| ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PAE16)
222	/** Whether the system is some 16-bit mode (includes real mode). */
223	#define BS3_MODE_IS_16BIT_SYS(a_fMode) (BS3_MODE_IS_16BIT_SYS_NO_RM(a_fMode) \|\| BS3_MODE_IS_RM_SYS(a_fMode))
224	/** Whether the system is some 32-bit mode. */
225	#define BS3_MODE_IS_32BIT_SYS(a_fMode) ( ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PE32 \
226	\|\| ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PP32 \
227	\|\| ((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_PAE32)
228	/** Whether the system is long mode. */
229	#define BS3_MODE_IS_64BIT_SYS(a_fMode) (((a_fMode) & BS3_MODE_SYS_MASK) == BS3_MODE_SYS_LM)
230
231	/** @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? */
232	/** @} */
233
234
235	/** @name BS3_ADDR_XXX - Static Memory Allocation
236	* @{ */
237	/** The flat load address for the code after the bootsector. */
238	#define BS3_ADDR_LOAD 0x10000
239	/** Where we save the boot registers during init.
240	* Located right before the code. */
241	#define BS3_ADDR_REG_SAVE (BS3_ADDR_LOAD - sizeof(BS3REGCTX) - 8)
242	/** Where the stack starts (initial RSP value).
243	* Located 16 bytes (assumed by boot sector) before the saved registers.
244	* SS.BASE=0. The size is a little short of 32KB */
245	#define BS3_ADDR_STACK (BS3_ADDR_REG_SAVE - 16)
246	/** The ring-0 stack (8KB) for ring transitions. */
247	#define BS3_ADDR_STACK_R0 0x06000
248	/** The ring-1 stack (8KB) for ring transitions. */
249	#define BS3_ADDR_STACK_R1 0x04000
250	/** The ring-2 stack (8KB) for ring transitions. */
251	#define BS3_ADDR_STACK_R2 0x02000
252	/** IST1 ring-0 stack for long mode (4KB), used for double faults elsewhere. */
253	#define BS3_ADDR_STACK_R0_IST1 0x09000
254	/** IST2 ring-0 stack for long mode (3KB), used for spare 0 stack elsewhere. */
255	#define BS3_ADDR_STACK_R0_IST2 0x08000
256	/** IST3 ring-0 stack for long mode (1KB). */
257	#define BS3_ADDR_STACK_R0_IST3 0x07400
258	/** IST4 ring-0 stack for long mode (1KB), used for spare 1 stack elsewhere. */
259	#define BS3_ADDR_STACK_R0_IST4 0x07000
260	/** IST5 ring-0 stack for long mode (1KB). */
261	#define BS3_ADDR_STACK_R0_IST5 0x06c00
262	/** IST6 ring-0 stack for long mode (1KB). */
263	#define BS3_ADDR_STACK_R0_IST6 0x06800
264	/** IST7 ring-0 stack for long mode (1KB). */
265	#define BS3_ADDR_STACK_R0_IST7 0x06400
266
267	/** The base address of the BS3TEXT16 segment (same as BS3_LOAD_ADDR).
268	* @sa BS3_SEL_TEXT16 */
269	#define BS3_ADDR_BS3TEXT16 0x10000
270	/** The base address of the BS3SYSTEM16 segment.
271	* @sa BS3_SEL_SYSTEM16 */
272	#define BS3_ADDR_BS3SYSTEM16 0x20000
273	/** The base address of the BS3DATA16/BS3KIT_GRPNM_DATA16 segment.
274	* @sa BS3_SEL_DATA16 */
275	#define BS3_ADDR_BS3DATA16 0x29000
276	/** @} */
277
278	/** @name BS3_SEL_XXX - GDT selector assignments.
279	*
280	* The real mode segment numbers for BS16TEXT, BS16DATA and BS16SYSTEM are
281	* present in the GDT, this allows the 16-bit C/C++ and assembly code to
282	* continue using the real mode segment values in ring-0 protected mode.
283	*
284	* The three segments have fixed locations:
285	* \| segment \| flat address \| real mode segment \|
286	* \| ----------- \| ------------ \| ----------------- \|
287	* \| BS3TEXT16 \| 0x00010000 \| 1000h \|
288	* \| BS3SYSTEM16 \| 0x00020000 \| 2000h \|
289	* \| BS3DATA16 \| 0x00029000 \| 2900h \|
290	*
291	* This means that we've got a lot of GDT space to play around with.
292	*
293	* @{ */
294	#define BS3_SEL_LDT 0x0010 /*< The LDT selector for Bs3Ldt. /
295	#define BS3_SEL_TSS16 0x0020 /*< The 16-bit TSS selector. /
296	#define BS3_SEL_TSS16_DF 0x0028 /*< The 16-bit TSS selector for double faults. /
297	#define BS3_SEL_TSS16_SPARE0 0x0030 /*< The 16-bit TSS selector for testing. /
298	#define BS3_SEL_TSS16_SPARE1 0x0038 /*< The 16-bit TSS selector for testing. /
299	#define BS3_SEL_TSS32 0x0040 /*< The 32-bit TSS selector. /
300	#define BS3_SEL_TSS32_DF 0x0048 /*< The 32-bit TSS selector for double faults. /
301	#define BS3_SEL_TSS32_SPARE0 0x0050 /*< The 32-bit TSS selector for testing. /
302	#define BS3_SEL_TSS32_SPARE1 0x0058 /*< The 32-bit TSS selector for testing. /
303	#define BS3_SEL_TSS32_IOBP_IRB 0x0060 /*< The 32-bit TSS selector with I/O permission and interrupt redirection bitmaps. /
304	#define BS3_SEL_TSS32_IRB 0x0068 /*< The 32-bit TSS selector with only interrupt redirection bitmap (IOPB stripped by limit). /
305	#define BS3_SEL_TSS64 0x0070 /*< The 64-bit TSS selector. /
306	#define BS3_SEL_TSS64_SPARE0 0x0080 /*< The 64-bit TSS selector. /
307	#define BS3_SEL_TSS64_SPARE1 0x0090 /*< The 64-bit TSS selector. /
308	#define BS3_SEL_TSS64_IOBP 0x00a0 /*< The 64-bit TSS selector. /
309
310	#define BS3_SEL_RMTEXT16_CS 0x00e0 /*< Conforming code selector for accessing the BS3RMTEXT16 segment. Runtime config. /
311	#define BS3_SEL_X0TEXT16_CS 0x00e8 /*< Conforming code selector for accessing the BS3X0TEXT16 segment. Runtime config. /
312	#define BS3_SEL_X1TEXT16_CS 0x00f0 /*< Conforming code selector for accessing the BS3X1TEXT16 segment. Runtime config. /
313	#define BS3_SEL_VMMDEV_MMIO16 0x00f8 /*< Selector for accessing the VMMDev MMIO segment at 0100000h from 16-bit code. /
314
315	/** Checks if @a uSel is in the BS3_SEL_RX_XXX range. */
316	#define BS3_SEL_IS_IN_RING_RANGE(uSel) ( (unsigned)(uSel - BS3_SEL_R0_FIRST) < (unsigned)(4 << BS3_SEL_RING_SHIFT) )
317	#define BS3_SEL_RING_SHIFT 8 /*< For the formula: BS3_SEL_R0_XXX + ((cs & 3) << BS3_SEL_RING_SHIFT) /
318	#define BS3_SEL_RING_SUB_MASK 0x00f8 /*< Mask for getting the sub-selector. For use with BS3_SEL_R_FIRST. */
319
320	/** Checks if @a uSel is in the BS3_SEL_R0_XXX range. */
321	#define BS3_SEL_IS_IN_R0_RANGE(uSel) ( (unsigned)(uSel - BS3_SEL_R0_FIRST) < (unsigned)(1 << BS3_SEL_RING_SHIFT) )
322	#define BS3_SEL_R0_FIRST 0x0100 /*< The first selector in the ring-0 block. /
323	#define BS3_SEL_R0_CS16 0x0100 /*< ring-0: 16-bit code selector, base 0x10000. /
324	#define BS3_SEL_R0_DS16 0x0108 /*< ring-0: 16-bit data selector, base 0x23000. /
325	#define BS3_SEL_R0_SS16 0x0110 /*< ring-0: 16-bit stack selector, base 0x00000. /
326	#define BS3_SEL_R0_CS32 0x0118 /*< ring-0: 32-bit flat code selector. /
327	#define BS3_SEL_R0_DS32 0x0120 /*< ring-0: 32-bit flat data selector. /
328	#define BS3_SEL_R0_SS32 0x0128 /*< ring-0: 32-bit flat stack selector. /
329	#define BS3_SEL_R0_CS64 0x0130 /*< ring-0: 64-bit flat code selector. /
330	#define BS3_SEL_R0_DS64 0x0138 /*< ring-0: 64-bit flat data & stack selector. /
331	#define BS3_SEL_R0_CS16_EO 0x0140 /*< ring-0: 16-bit execute-only code selector, not accessed, 0xfffe limit, CS16 base. /
332	#define BS3_SEL_R0_CS16_CNF 0x0148 /*< ring-0: 16-bit conforming code selector, not accessed, 0xfffe limit, CS16 base. /
333	#define BS3_SEL_R0_CS16_CNF_EO 0x0150 /*< ring-0: 16-bit execute-only conforming code selector, not accessed, 0xfffe limit, CS16 base. /
334	#define BS3_SEL_R0_CS32_EO 0x0158 /*< ring-0: 32-bit execute-only code selector, not accessed, flat. /
335	#define BS3_SEL_R0_CS32_CNF 0x0160 /*< ring-0: 32-bit conforming code selector, not accessed, flat. /
336	#define BS3_SEL_R0_CS32_CNF_EO 0x0168 /*< ring-0: 32-bit execute-only conforming code selector, not accessed, flat. /
337	#define BS3_SEL_R0_CS64_EO 0x0170 /*< ring-0: 64-bit execute-only code selector, not accessed, flat. /
338	#define BS3_SEL_R0_CS64_CNF 0x0178 /*< ring-0: 64-bit conforming code selector, not accessed, flat. /
339	#define BS3_SEL_R0_CS64_CNF_EO 0x0180 /*< ring-0: 64-bit execute-only conforming code selector, not accessed, flat. /
340
341	#define BS3_SEL_R1_FIRST 0x0200 /*< The first selector in the ring-1 block. /
342	#define BS3_SEL_R1_CS16 0x0200 /*< ring-1: 16-bit code selector, base 0x10000. /
343	#define BS3_SEL_R1_DS16 0x0208 /*< ring-1: 16-bit data selector, base 0x23000. /
344	#define BS3_SEL_R1_SS16 0x0210 /*< ring-1: 16-bit stack selector, base 0x00000. /
345	#define BS3_SEL_R1_CS32 0x0218 /*< ring-1: 32-bit flat code selector. /
346	#define BS3_SEL_R1_DS32 0x0220 /*< ring-1: 32-bit flat data selector. /
347	#define BS3_SEL_R1_SS32 0x0228 /*< ring-1: 32-bit flat stack selector. /
348	#define BS3_SEL_R1_CS64 0x0230 /*< ring-1: 64-bit flat code selector. /
349	#define BS3_SEL_R1_DS64 0x0238 /*< ring-1: 64-bit flat data & stack selector. /
350	#define BS3_SEL_R1_CS16_EO 0x0240 /*< ring-1: 16-bit execute-only code selector, not accessed, 0xfffe limit, CS16 base. /
351	#define BS3_SEL_R1_CS16_CNF 0x0248 /*< ring-1: 16-bit conforming code selector, not accessed, 0xfffe limit, CS16 base. /
352	#define BS3_SEL_R1_CS16_CNF_EO 0x0250 /*< ring-1: 16-bit execute-only conforming code selector, not accessed, 0xfffe limit, CS16 base. /
353	#define BS3_SEL_R1_CS32_EO 0x0258 /*< ring-1: 32-bit execute-only code selector, not accessed, flat. /
354	#define BS3_SEL_R1_CS32_CNF 0x0260 /*< ring-1: 32-bit conforming code selector, not accessed, flat. /
355	#define BS3_SEL_R1_CS32_CNF_EO 0x0268 /*< ring-1: 32-bit execute-only conforming code selector, not accessed, flat. /
356	#define BS3_SEL_R1_CS64_EO 0x0270 /*< ring-1: 64-bit execute-only code selector, not accessed, flat. /
357	#define BS3_SEL_R1_CS64_CNF 0x0278 /*< ring-1: 64-bit conforming code selector, not accessed, flat. /
358	#define BS3_SEL_R1_CS64_CNF_EO 0x0280 /*< ring-1: 64-bit execute-only conforming code selector, not accessed, flat. /
359
360	#define BS3_SEL_R2_FIRST 0x0300 /*< The first selector in the ring-2 block. /
361	#define BS3_SEL_R2_CS16 0x0300 /*< ring-2: 16-bit code selector, base 0x10000. /
362	#define BS3_SEL_R2_DS16 0x0308 /*< ring-2: 16-bit data selector, base 0x23000. /
363	#define BS3_SEL_R2_SS16 0x0310 /*< ring-2: 16-bit stack selector, base 0x00000. /
364	#define BS3_SEL_R2_CS32 0x0318 /*< ring-2: 32-bit flat code selector. /
365	#define BS3_SEL_R2_DS32 0x0320 /*< ring-2: 32-bit flat data selector. /
366	#define BS3_SEL_R2_SS32 0x0328 /*< ring-2: 32-bit flat stack selector. /
367	#define BS3_SEL_R2_CS64 0x0330 /*< ring-2: 64-bit flat code selector. /
368	#define BS3_SEL_R2_DS64 0x0338 /*< ring-2: 64-bit flat data & stack selector. /
369	#define BS3_SEL_R2_CS16_EO 0x0340 /*< ring-2: 16-bit execute-only code selector, not accessed, 0xfffe limit, CS16 base. /
370	#define BS3_SEL_R2_CS16_CNF 0x0348 /*< ring-2: 16-bit conforming code selector, not accessed, 0xfffe limit, CS16 base. /
371	#define BS3_SEL_R2_CS16_CNF_EO 0x0350 /*< ring-2: 16-bit execute-only conforming code selector, not accessed, 0xfffe limit, CS16 base. /
372	#define BS3_SEL_R2_CS32_EO 0x0358 /*< ring-2: 32-bit execute-only code selector, not accessed, flat. /
373	#define BS3_SEL_R2_CS32_CNF 0x0360 /*< ring-2: 32-bit conforming code selector, not accessed, flat. /
374	#define BS3_SEL_R2_CS32_CNF_EO 0x0368 /*< ring-2: 32-bit execute-only conforming code selector, not accessed, flat. /
375	#define BS3_SEL_R2_CS64_EO 0x0370 /*< ring-2: 64-bit execute-only code selector, not accessed, flat. /
376	#define BS3_SEL_R2_CS64_CNF 0x0378 /*< ring-2: 64-bit conforming code selector, not accessed, flat. /
377	#define BS3_SEL_R2_CS64_CNF_EO 0x0380 /*< ring-2: 64-bit execute-only conforming code selector, not accessed, flat. /
378
379	#define BS3_SEL_R3_FIRST 0x0400 /*< The first selector in the ring-3 block. /
380	#define BS3_SEL_R3_CS16 0x0400 /*< ring-3: 16-bit code selector, base 0x10000. /
381	#define BS3_SEL_R3_DS16 0x0408 /*< ring-3: 16-bit data selector, base 0x23000. /
382	#define BS3_SEL_R3_SS16 0x0410 /*< ring-3: 16-bit stack selector, base 0x00000. /
383	#define BS3_SEL_R3_CS32 0x0418 /*< ring-3: 32-bit flat code selector. /
384	#define BS3_SEL_R3_DS32 0x0420 /*< ring-3: 32-bit flat data selector. /
385	#define BS3_SEL_R3_SS32 0x0428 /*< ring-3: 32-bit flat stack selector. /
386	#define BS3_SEL_R3_CS64 0x0430 /*< ring-3: 64-bit flat code selector. /
387	#define BS3_SEL_R3_DS64 0x0438 /*< ring-3: 64-bit flat data & stack selector. /
388	#define BS3_SEL_R3_CS16_EO 0x0440 /*< ring-3: 16-bit execute-only code selector, not accessed, 0xfffe limit, CS16 base. /
389	#define BS3_SEL_R3_CS16_CNF 0x0448 /*< ring-3: 16-bit conforming code selector, not accessed, 0xfffe limit, CS16 base. /
390	#define BS3_SEL_R3_CS16_CNF_EO 0x0450 /*< ring-3: 16-bit execute-only conforming code selector, not accessed, 0xfffe limit, CS16 base. /
391	#define BS3_SEL_R3_CS32_EO 0x0458 /*< ring-3: 32-bit execute-only code selector, not accessed, flat. /
392	#define BS3_SEL_R3_CS32_CNF 0x0460 /*< ring-3: 32-bit conforming code selector, not accessed, flat. /
393	#define BS3_SEL_R3_CS32_CNF_EO 0x0468 /*< ring-3: 32-bit execute-only conforming code selector, not accessed, flat. /
394	#define BS3_SEL_R3_CS64_EO 0x0470 /*< ring-3: 64-bit execute-only code selector, not accessed, flat. /
395	#define BS3_SEL_R3_CS64_CNF 0x0478 /*< ring-3: 64-bit conforming code selector, not accessed, flat. /
396	#define BS3_SEL_R3_CS64_CNF_EO 0x0480 /*< ring-3: 64-bit execute-only conforming code selector, not accessed, flat. /
397
398	#define BS3_SEL_R3_LAST 0x04f8 /*< ring-3: Last of the BS3_SEL_RX_XXX range. /
399
400	#define BS3_SEL_SPARE_FIRST 0x0500 /*< The first selector in the spare block /
401	#define BS3_SEL_SPARE_00 0x0500 /*< Spare selector number 00h. /
402	#define BS3_SEL_SPARE_01 0x0508 /*< Spare selector number 01h. /
403	#define BS3_SEL_SPARE_02 0x0510 /*< Spare selector number 02h. /
404	#define BS3_SEL_SPARE_03 0x0518 /*< Spare selector number 03h. /
405	#define BS3_SEL_SPARE_04 0x0520 /*< Spare selector number 04h. /
406	#define BS3_SEL_SPARE_05 0x0528 /*< Spare selector number 05h. /
407	#define BS3_SEL_SPARE_06 0x0530 /*< Spare selector number 06h. /
408	#define BS3_SEL_SPARE_07 0x0538 /*< Spare selector number 07h. /
409	#define BS3_SEL_SPARE_08 0x0540 /*< Spare selector number 08h. /
410	#define BS3_SEL_SPARE_09 0x0548 /*< Spare selector number 09h. /
411	#define BS3_SEL_SPARE_0a 0x0550 /*< Spare selector number 0ah. /
412	#define BS3_SEL_SPARE_0b 0x0558 /*< Spare selector number 0bh. /
413	#define BS3_SEL_SPARE_0c 0x0560 /*< Spare selector number 0ch. /
414	#define BS3_SEL_SPARE_0d 0x0568 /*< Spare selector number 0dh. /
415	#define BS3_SEL_SPARE_0e 0x0570 /*< Spare selector number 0eh. /
416	#define BS3_SEL_SPARE_0f 0x0578 /*< Spare selector number 0fh. /
417	#define BS3_SEL_SPARE_10 0x0580 /*< Spare selector number 10h. /
418	#define BS3_SEL_SPARE_11 0x0588 /*< Spare selector number 11h. /
419	#define BS3_SEL_SPARE_12 0x0590 /*< Spare selector number 12h. /
420	#define BS3_SEL_SPARE_13 0x0598 /*< Spare selector number 13h. /
421	#define BS3_SEL_SPARE_14 0x05a0 /*< Spare selector number 14h. /
422	#define BS3_SEL_SPARE_15 0x05a8 /*< Spare selector number 15h. /
423	#define BS3_SEL_SPARE_16 0x05b0 /*< Spare selector number 16h. /
424	#define BS3_SEL_SPARE_17 0x05b8 /*< Spare selector number 17h. /
425	#define BS3_SEL_SPARE_18 0x05c0 /*< Spare selector number 18h. /
426	#define BS3_SEL_SPARE_19 0x05c8 /*< Spare selector number 19h. /
427	#define BS3_SEL_SPARE_1a 0x05d0 /*< Spare selector number 1ah. /
428	#define BS3_SEL_SPARE_1b 0x05d8 /*< Spare selector number 1bh. /
429	#define BS3_SEL_SPARE_1c 0x05e0 /*< Spare selector number 1ch. /
430	#define BS3_SEL_SPARE_1d 0x05e8 /*< Spare selector number 1dh. /
431	#define BS3_SEL_SPARE_1e 0x05f0 /*< Spare selector number 1eh. /
432	#define BS3_SEL_SPARE_1f 0x05f8 /*< Spare selector number 1fh. /
433
434	#define BS3_SEL_TILED 0x0600 /*< 16-bit data tiling: First - base=0x00000000, limit=64KB, DPL=3. /
435	#define BS3_SEL_TILED_LAST 0x0df8 /*< 16-bit data tiling: Last - base=0x00ff0000, limit=64KB, DPL=3. /
436	#define BS3_SEL_TILED_AREA_SIZE 0x001000000 /*< 16-bit data tiling: Size of addressable area, in bytes. (16 MB) /
437
438	#define BS3_SEL_FREE_PART1 0x0e00 /*< Free selector space - part \#1. /
439	#define BS3_SEL_FREE_PART1_LAST 0x0ff8 /*< Free selector space - part \#1, last entry. /
440
441	#define BS3_SEL_TEXT16 0x1000 /*< The BS3TEXT16 selector. /
442
443	#define BS3_SEL_FREE_PART2 0x1008 /*< Free selector space - part \#2. /
444	#define BS3_SEL_FREE_PART2_LAST 0x17f8 /*< Free selector space - part \#2, last entry. /
445
446	#define BS3_SEL_TILED_R0 0x1800 /*< 16-bit data/stack tiling: First - base=0x00000000, limit=64KB, DPL=0. /
447	#define BS3_SEL_TILED_R0_LAST 0x1ff8 /*< 16-bit data/stack tiling: Last - base=0x00ff0000, limit=64KB, DPL=0. /
448
449	#define BS3_SEL_SYSTEM16 0x2000 /*< The BS3SYSTEM16 selector. /
450
451	#define BS3_SEL_FREE_PART3 0x2008 /*< Free selector space - part \#3. /
452	#define BS3_SEL_FREE_PART3_LAST 0x28f8 /*< Free selector space - part \#3, last entry. /
453
454	#define BS3_SEL_DATA16 0x2900 /*< The BS3DATA16/BS3KIT_GRPNM_DATA16 selector. /
455
456	#define BS3_SEL_FREE_PART4 0x2908 /*< Free selector space - part \#4. /
457	#define BS3_SEL_FREE_PART4_LAST 0x2f98 /*< Free selector space - part \#4, last entry. /
458
459	#define BS3_SEL_PRE_TEST_PAGE_08 0x2fa0 /*< Selector located 8 selectors before the test page. /
460	#define BS3_SEL_PRE_TEST_PAGE_07 0x2fa8 /*< Selector located 7 selectors before the test page. /
461	#define BS3_SEL_PRE_TEST_PAGE_06 0x2fb0 /*< Selector located 6 selectors before the test page. /
462	#define BS3_SEL_PRE_TEST_PAGE_05 0x2fb8 /*< Selector located 5 selectors before the test page. /
463	#define BS3_SEL_PRE_TEST_PAGE_04 0x2fc0 /*< Selector located 4 selectors before the test page. /
464	#define BS3_SEL_PRE_TEST_PAGE_03 0x2fc8 /*< Selector located 3 selectors before the test page. /
465	#define BS3_SEL_PRE_TEST_PAGE_02 0x2fd0 /*< Selector located 2 selectors before the test page. /
466	#define BS3_SEL_PRE_TEST_PAGE_01 0x2fd8 /*< Selector located 1 selector before the test page. /
467	#define BS3_SEL_TEST_PAGE 0x2fe0 /*< Start of the test page intended for playing around with paging and GDT. /
468	#define BS3_SEL_TEST_PAGE_00 0x2fe0 /*< Test page selector number 00h (convenience). /
469	#define BS3_SEL_TEST_PAGE_01 0x2fe8 /*< Test page selector number 01h (convenience). /
470	#define BS3_SEL_TEST_PAGE_02 0x2ff0 /*< Test page selector number 02h (convenience). /
471	#define BS3_SEL_TEST_PAGE_03 0x2ff8 /*< Test page selector number 03h (convenience). /
472	#define BS3_SEL_TEST_PAGE_04 0x3000 /*< Test page selector number 04h (convenience). /
473	#define BS3_SEL_TEST_PAGE_05 0x3008 /*< Test page selector number 05h (convenience). /
474	#define BS3_SEL_TEST_PAGE_06 0x3010 /*< Test page selector number 06h (convenience). /
475	#define BS3_SEL_TEST_PAGE_07 0x3018 /*< Test page selector number 07h (convenience). /
476	#define BS3_SEL_TEST_PAGE_LAST 0x3fd0 /*< The last selector in the spare page. /
477
478	#define BS3_SEL_GDT_LIMIT 0x3fd8 /*< The GDT limit. /
479	/** @} */
480
481
482	/** @def BS3_FAR
483	* For indicating far pointers in 16-bit code.
484	* Does nothing in 32-bit and 64-bit code. */
485	/** @def BS3_NEAR
486	* For indicating near pointers in 16-bit code.
487	* Does nothing in 32-bit and 64-bit code. */
488	/** @def BS3_FAR_CODE
489	* For indicating far 16-bit functions.
490	* Does nothing in 32-bit and 64-bit code. */
491	/** @def BS3_NEAR_CODE
492	* For indicating near 16-bit functions.
493	* Does nothing in 32-bit and 64-bit code. */
494	/** @def BS3_FAR_DATA
495	* For indicating far 16-bit external data, i.e. in a segment other than DATA16.
496	* Does nothing in 32-bit and 64-bit code. */
497	#ifdef M_I86
498	# define BS3_FAR __far
499	# define BS3_NEAR __near
500	# define BS3_FAR_CODE __far
501	# define BS3_NEAR_CODE __near
502	# define BS3_FAR_DATA __far
503	#else
504	# define BS3_FAR
505	# define BS3_NEAR
506	# define BS3_FAR_CODE
507	# define BS3_NEAR_CODE
508	# define BS3_FAR_DATA
509	#endif
510
511	#if ARCH_BITS == 16 \|\| defined(DOXYGEN_RUNNING)
512	/** @def BS3_FP_SEG
513	* Get the selector (segment) part of a far pointer.
514	*
515	* @returns selector.
516	* @param a_pv Far pointer.
517	*/
518	# define BS3_FP_SEG(a_pv) ((uint16_t)(__segment)(void BS3_FAR *)(a_pv))
519	/** @def BS3_FP_OFF
520	* Get the segment offset part of a far pointer.
521	*
522	* For sake of convenience, this works like a uintptr_t cast in 32-bit and
523	* 64-bit code.
524	*
525	* @returns offset.
526	* @param a_pv Far pointer.
527	*/
528	# define BS3_FP_OFF(a_pv) ((uint16_t)(void __near *)(a_pv))
529	/** @def BS3_FP_MAKE
530	* Create a far pointer.
531	*
532	* @returns Far pointer.
533	* @param a_uSeg The selector/segment.
534	* @param a_off The offset into the segment.
535	*/
536	# define BS3_FP_MAKE(a_uSeg, a_off) (((__segment)(a_uSeg)) :> ((void __near *)(a_off)))
537	#else
538	# define BS3_FP_OFF(a_pv) ((uintptr_t)(a_pv))
539	#endif
540
541	/** @def BS3_MAKE_PROT_R0PTR_FROM_FLAT
542	* Creates a protected mode pointer from a flat address.
543	*
544	* For sake of convenience, this macro also works in 32-bit and 64-bit mode,
545	* only there it doesn't return a far pointer but a flat point.
546	*
547	* @returns far void pointer if 16-bit code, near/flat void pointer in 32-bit
548	* and 64-bit.
549	* @param a_uFlat Flat address in the first 16MB. */
550	#if ARCH_BITS == 16
551	# define BS3_MAKE_PROT_R0PTR_FROM_FLAT(a_uFlat) \
552	BS3_FP_MAKE(((uint16_t)(a_uFlat >> 16) << 3) + BS3_SEL_TILED, (uint16_t)(a_uFlat))
553	#else
554	# define BS3_MAKE_PROT_R0PTR_FROM_FLAT(a_uFlat) ((void *)(uintptr_t)(a_uFlat))
555	#endif
556
557	/** @def BS3_MAKE_PROT_R0PTR_FROM_REAL
558	* Creates a protected mode pointer from a far real mode address.
559	*
560	* For sake of convenience, this macro also works in 32-bit and 64-bit mode,
561	* only there it doesn't return a far pointer but a flat point.
562	*
563	* @returns far void pointer if 16-bit code, near/flat void pointer in 32-bit
564	* and 64-bit.
565	* @param a_uSeg The selector/segment.
566	* @param a_off The offset into the segment.
567	*/
568	#if ARCH_BITS == 16
569	# 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))
570	#else
571	# define BS3_MAKE_PROT_R0PTR_FROM_REAL(a_uSeg, a_off) ( (void *)(uintptr_t)(((uint32_t)(a_uSeg) << 4) + (uint16_t)(a_off)) )
572	#endif
573
574
575	/** @def BS3_CALL
576	* The calling convension used by BS3 functions. */
577	#if ARCH_BITS != 64
578	# define BS3_CALL __cdecl
579	#elif !defined(_MSC_VER)
580	# define BS3_CALL __attribute__((__ms_abi__))
581	#else
582	# define BS3_CALL
583	#endif
584
585	/** @def IN_BS3KIT
586	* Indicates that we're in the same link job as the BS3Kit code. */
587	#ifdef DOXYGEN_RUNNING
588	# define IN_BS3KIT
589	#endif
590
591	/** @def BS3_DECL
592	* Declares a BS3Kit function with default far/near.
593	*
594	* Until we outgrow BS3TEXT16, we use all near functions in 16-bit.
595	*
596	* @param a_Type The return type. */
597	#if ARCH_BITS != 16 \|\| !defined(BS3_USE_ALT_16BIT_TEXT_SEG)
598	# define BS3_DECL(a_Type) BS3_DECL_NEAR(a_Type)
599	#else
600	# define BS3_DECL(a_Type) BS3_DECL_FAR(a_Type)
601	#endif
602
603	/** @def BS3_DECL_NEAR
604	* Declares a BS3Kit function, always near everywhere.
605	*
606	* Until we outgrow BS3TEXT16, we use all near functions in 16-bit.
607	*
608	* @param a_Type The return type. */
609	#ifdef IN_BS3KIT
610	# define BS3_DECL_NEAR(a_Type) DECLEXPORT(a_Type) BS3_NEAR_CODE BS3_CALL
611	#else
612	# define BS3_DECL_NEAR(a_Type) DECLIMPORT(a_Type) BS3_NEAR_CODE BS3_CALL
613	#endif
614
615	/** @def BS3_DECL_FAR
616	* Declares a BS3Kit function, far 16-bit, otherwise near.
617	*
618	* Until we outgrow BS3TEXT16, we use all near functions in 16-bit.
619	*
620	* @param a_Type The return type. */
621	#ifdef IN_BS3KIT
622	# define BS3_DECL_FAR(a_Type) DECLEXPORT(a_Type) BS3_FAR_CODE BS3_CALL
623	#else
624	# define BS3_DECL_FAR(a_Type) DECLIMPORT(a_Type) BS3_FAR_CODE BS3_CALL
625	#endif
626
627	/** @def BS3_DECL_CALLBACK
628	* Declares a BS3Kit callback function (typically static).
629	*
630	* @param a_Type The return type. */
631	#ifdef IN_BS3KIT
632	# define BS3_DECL_CALLBACK(a_Type) a_Type BS3_FAR_CODE BS3_CALL
633	#else
634	# define BS3_DECL_CALLBACK(a_Type) a_Type BS3_FAR_CODE BS3_CALL
635	#endif
636
637	/** @def BS3_DECL_NEAR_CALLBACK
638	* Declares a near BS3Kit callback function (typically static).
639	*
640	* 16-bit users must be in CGROUP16!
641	*
642	* @param a_Type The return type. */
643	#ifdef IN_BS3KIT
644	# define BS3_DECL_NEAR_CALLBACK(a_Type) a_Type BS3_NEAR_CODE BS3_CALL
645	#else
646	# define BS3_DECL_NEAR_CALLBACK(a_Type) a_Type BS3_NEAR_CODE BS3_CALL
647	#endif
648
649	/**
650	* Constructs a common name.
651	*
652	* Example: BS3_CMN_NM(Bs3Shutdown)
653	*
654	* @param a_Name The name of the function or global variable.
655	*/
656	#define BS3_CMN_NM(a_Name) RT_CONCAT3(a_Name,_c,ARCH_BITS)
657
658	/**
659	* Constructs a common function name, far in 16-bit code.
660	*
661	* Example: BS3_CMN_FAR_NM(Bs3Shutdown)
662	*
663	* @param a_Name The name of the function.
664	*/
665	#if ARCH_BITS == 16
666	# define BS3_CMN_FAR_NM(a_Name) RT_CONCAT(a_Name,_f16)
667	#else
668	# define BS3_CMN_FAR_NM(a_Name) RT_CONCAT3(a_Name,_c,ARCH_BITS)
669	#endif
670
671	/**
672	* Constructs a common function name, far or near as defined by the source.
673	*
674	* Which to use in 16-bit mode is defined by BS3_USE_ALT_16BIT_TEXT_SEG. In
675	* 32-bit and 64-bit mode there are no far symbols, only near ones.
676	*
677	* Example: BS3_CMN_FN_NM(Bs3Shutdown)
678	*
679	* @param a_Name The name of the function.
680	*/
681	#if ARCH_BITS != 16 \|\| !defined(BS3_USE_ALT_16BIT_TEXT_SEG)
682	# define BS3_CMN_FN_NM(a_Name) BS3_CMN_NM(a_Name)
683	#else
684	# define BS3_CMN_FN_NM(a_Name) BS3_CMN_FAR_NM(a_Name)
685	#endif
686
687
688	/**
689	* Constructs a data name.
690	*
691	* This glosses over the underscore prefix usage of our 16-bit, 32-bit and
692	* 64-bit compilers.
693	*
694	* Example: @code{.c}
695	* \#define Bs3Gdt BS3_DATA_NM(Bs3Gdt)
696	* extern X86DESC BS3_FAR_DATA Bs3Gdt
697	* @endcode
698	*
699	* @param a_Name The name of the global variable.
700	* @remarks Mainly used in bs3kit-mangling.h, internal headers and templates.
701	*/
702	//converter does this now//#if ARCH_BITS == 64
703	//converter does this now//# define BS3_DATA_NM(a_Name) RT_CONCAT(_,a_Name)
704	//converter does this now//#else
705	# define BS3_DATA_NM(a_Name) a_Name
706	//converter does this now//#endif
707
708	/**
709	* Template for creating a pointer union type.
710	* @param a_BaseName The base type name.
711	* @param a_Modifiers The type modifier.
712	*/
713	#define BS3_PTR_UNION_TEMPLATE(a_BaseName, a_Modifiers) \
714	typedef union a_BaseName \
715	{ \
716	/** Pointer into the void. */ \
717	a_Modifiers void BS3_FAR *pv; \
718	/** As a signed integer. */ \
719	intptr_t i; \
720	/** As an unsigned integer. */ \
721	uintptr_t u; \
722	/** Pointer to char value. */ \
723	a_Modifiers char BS3_FAR *pch; \
724	/** Pointer to char value. */ \
725	a_Modifiers unsigned char BS3_FAR *puch; \
726	/** Pointer to a int value. */ \
727	a_Modifiers int BS3_FAR *pi; \
728	/** Pointer to a unsigned int value. */ \
729	a_Modifiers unsigned int BS3_FAR *pu; \
730	/** Pointer to a long value. */ \
731	a_Modifiers long BS3_FAR *pl; \
732	/** Pointer to a long value. */ \
733	a_Modifiers unsigned long BS3_FAR *pul; \
734	/** Pointer to a memory size value. */ \
735	a_Modifiers size_t BS3_FAR *pcb; \
736	/** Pointer to a byte value. */ \
737	a_Modifiers uint8_t BS3_FAR *pb; \
738	/** Pointer to a 8-bit unsigned value. */ \
739	a_Modifiers uint8_t BS3_FAR *pu8; \
740	/** Pointer to a 16-bit unsigned value. */ \
741	a_Modifiers uint16_t BS3_FAR *pu16; \
742	/** Pointer to a 32-bit unsigned value. */ \
743	a_Modifiers uint32_t BS3_FAR *pu32; \
744	/** Pointer to a 64-bit unsigned value. */ \
745	a_Modifiers uint64_t BS3_FAR *pu64; \
746	/** Pointer to a UTF-16 character. */ \
747	a_Modifiers RTUTF16 BS3_FAR *pwc; \
748	/** Pointer to a UUID character. */ \
749	a_Modifiers RTUUID BS3_FAR *pUuid; \
750	} a_BaseName; \
751	/** Pointer to a pointer union. */ \
752	typedef a_BaseName *RT_CONCAT(P,a_BaseName)
753	BS3_PTR_UNION_TEMPLATE(BS3PTRUNION, RT_NOTHING);
754	BS3_PTR_UNION_TEMPLATE(BS3CPTRUNION, const);
755	BS3_PTR_UNION_TEMPLATE(BS3VPTRUNION, volatile);
756	BS3_PTR_UNION_TEMPLATE(BS3CVPTRUNION, const volatile);
757
758	/** Generic far function type. */
759	typedef BS3_DECL_FAR(void) FNBS3FAR(void);
760	/** Generic far function pointer type. */
761	typedef FNBS3FAR *FPFNBS3FAR;
762
763	/** Generic near function type. */
764	typedef BS3_DECL_NEAR(void) FNBS3NEAR(void);
765	/** Generic near function pointer type. */
766	typedef FNBS3NEAR *PFNBS3NEAR;
767
768	/** Generic far 16:16 function pointer type for address conversion functions. */
769	#if ARCH_BITS == 16
770	typedef FPFNBS3FAR PFNBS3FARADDRCONV;
771	#else
772	typedef uint32_t PFNBS3FARADDRCONV;
773	#endif
774
775	/** The system call vector. */
776	#define BS3_TRAP_SYSCALL UINT8_C(0x20)
777
778	/** @name System call numbers (ax).
779	* Paramenters are generally passed in registers specific to each system call,
780	* however cx:xSI is used for passing a pointer parameter.
781	* @{ */
782	/** Print char (cl). */
783	#define BS3_SYSCALL_PRINT_CHR UINT16_C(0x0001)
784	/** Print string (pointer in cx:xSI, length in dx). */
785	#define BS3_SYSCALL_PRINT_STR UINT16_C(0x0002)
786	/** Switch to ring-0. */
787	#define BS3_SYSCALL_TO_RING0 UINT16_C(0x0003)
788	/** Switch to ring-1. */
789	#define BS3_SYSCALL_TO_RING1 UINT16_C(0x0004)
790	/** Switch to ring-2. */
791	#define BS3_SYSCALL_TO_RING2 UINT16_C(0x0005)
792	/** Switch to ring-3. */
793	#define BS3_SYSCALL_TO_RING3 UINT16_C(0x0006)
794	/** Restore context (pointer in cx:xSI, flags in dx). */
795	#define BS3_SYSCALL_RESTORE_CTX UINT16_C(0x0007)
796	/** @} */
797
798
799
800	/** @defgroup grp_bs3kit_system System Structures
801	* @{ */
802	/** The GDT, indexed by BS3_SEL_XXX shifted by 3. */
803	extern X86DESC BS3_FAR_DATA Bs3Gdt[(BS3_SEL_GDT_LIMIT + 1) / 8];
804
805	extern X86DESC64 BS3_FAR_DATA Bs3Gdt_Ldt; /*< @see BS3_SEL_LDT /
806	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss16; /*< @see BS3_SEL_TSS16 /
807	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss16DoubleFault; /*< @see BS3_SEL_TSS16_DF /
808	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss16Spare0; /*< @see BS3_SEL_TSS16_SPARE0 /
809	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss16Spare1; /*< @see BS3_SEL_TSS16_SPARE1 /
810	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32; /*< @see BS3_SEL_TSS32 /
811	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32DoubleFault; /*< @see BS3_SEL_TSS32_DF /
812	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32Spare0; /*< @see BS3_SEL_TSS32_SPARE0 /
813	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32Spare1; /*< @see BS3_SEL_TSS32_SPARE1 /
814	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32IobpIntRedirBm; /*< @see BS3_SEL_TSS32_IOBP_IRB /
815	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss32IntRedirBm; /*< @see BS3_SEL_TSS32_IRB /
816	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss64; /*< @see BS3_SEL_TSS64 /
817	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss64Spare0; /*< @see BS3_SEL_TSS64_SPARE0 /
818	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss64Spare1; /*< @see BS3_SEL_TSS64_SPARE1 /
819	extern X86DESC BS3_FAR_DATA Bs3Gdte_Tss64Iobp; /*< @see BS3_SEL_TSS64_IOBP /
820	extern X86DESC BS3_FAR_DATA Bs3Gdte_RMTEXT16_CS; /*< @see BS3_SEL_RMTEXT16_CS /
821	extern X86DESC BS3_FAR_DATA Bs3Gdte_X0TEXT16_CS; /*< @see BS3_SEL_X0TEXT16_CS /
822	extern X86DESC BS3_FAR_DATA Bs3Gdte_X1TEXT16_CS; /*< @see BS3_SEL_X1TEXT16_CS /
823	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_MMIO16; /*< @see BS3_SEL_VMMDEV_MMIO16 /
824
825	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_First; /*< @see BS3_SEL_R0_FIRST /
826	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS16; /*< @see BS3_SEL_R0_CS16 /
827	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_DS16; /*< @see BS3_SEL_R0_DS16 /
828	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_SS16; /*< @see BS3_SEL_R0_SS16 /
829	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS32; /*< @see BS3_SEL_R0_CS32 /
830	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_DS32; /*< @see BS3_SEL_R0_DS32 /
831	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_SS32; /*< @see BS3_SEL_R0_SS32 /
832	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS64; /*< @see BS3_SEL_R0_CS64 /
833	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_DS64; /*< @see BS3_SEL_R0_DS64 /
834	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS16_EO; /*< @see BS3_SEL_R0_CS16_EO /
835	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS16_CNF; /*< @see BS3_SEL_R0_CS16_CNF /
836	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS16_CND_EO; /*< @see BS3_SEL_R0_CS16_CNF_EO /
837	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS32_EO; /*< @see BS3_SEL_R0_CS32_EO /
838	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS32_CNF; /*< @see BS3_SEL_R0_CS32_CNF /
839	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS32_CNF_EO; /*< @see BS3_SEL_R0_CS32_CNF_EO /
840	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS64_EO; /*< @see BS3_SEL_R0_CS64_EO /
841	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS64_CNF; /*< @see BS3_SEL_R0_CS64_CNF /
842	extern X86DESC BS3_FAR_DATA Bs3Gdte_R0_CS64_CNF_EO; /*< @see BS3_SEL_R0_CS64_CNF_EO /
843
844	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_First; /*< @see BS3_SEL_R1_FIRST /
845	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS16; /*< @see BS3_SEL_R1_CS16 /
846	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_DS16; /*< @see BS3_SEL_R1_DS16 /
847	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_SS16; /*< @see BS3_SEL_R1_SS16 /
848	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS32; /*< @see BS3_SEL_R1_CS32 /
849	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_DS32; /*< @see BS3_SEL_R1_DS32 /
850	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_SS32; /*< @see BS3_SEL_R1_SS32 /
851	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS64; /*< @see BS3_SEL_R1_CS64 /
852	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_DS64; /*< @see BS3_SEL_R1_DS64 /
853	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS16_EO; /*< @see BS3_SEL_R1_CS16_EO /
854	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS16_CNF; /*< @see BS3_SEL_R1_CS16_CNF /
855	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS16_CND_EO; /*< @see BS3_SEL_R1_CS16_CNF_EO /
856	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS32_EO; /*< @see BS3_SEL_R1_CS32_EO /
857	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS32_CNF; /*< @see BS3_SEL_R1_CS32_CNF /
858	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS32_CNF_EO; /*< @see BS3_SEL_R1_CS32_CNF_EO /
859	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS64_EO; /*< @see BS3_SEL_R1_CS64_EO /
860	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS64_CNF; /*< @see BS3_SEL_R1_CS64_CNF /
861	extern X86DESC BS3_FAR_DATA Bs3Gdte_R1_CS64_CNF_EO; /*< @see BS3_SEL_R1_CS64_CNF_EO /
862
863	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_First; /*< @see BS3_SEL_R2_FIRST /
864	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS16; /*< @see BS3_SEL_R2_CS16 /
865	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_DS16; /*< @see BS3_SEL_R2_DS16 /
866	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_SS16; /*< @see BS3_SEL_R2_SS16 /
867	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS32; /*< @see BS3_SEL_R2_CS32 /
868	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_DS32; /*< @see BS3_SEL_R2_DS32 /
869	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_SS32; /*< @see BS3_SEL_R2_SS32 /
870	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS64; /*< @see BS3_SEL_R2_CS64 /
871	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_DS64; /*< @see BS3_SEL_R2_DS64 /
872	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS16_EO; /*< @see BS3_SEL_R2_CS16_EO /
873	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS16_CNF; /*< @see BS3_SEL_R2_CS16_CNF /
874	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS16_CND_EO; /*< @see BS3_SEL_R2_CS16_CNF_EO /
875	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS32_EO; /*< @see BS3_SEL_R2_CS32_EO /
876	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS32_CNF; /*< @see BS3_SEL_R2_CS32_CNF /
877	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS32_CNF_EO; /*< @see BS3_SEL_R2_CS32_CNF_EO /
878	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS64_EO; /*< @see BS3_SEL_R2_CS64_EO /
879	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS64_CNF; /*< @see BS3_SEL_R2_CS64_CNF /
880	extern X86DESC BS3_FAR_DATA Bs3Gdte_R2_CS64_CNF_EO; /*< @see BS3_SEL_R2_CS64_CNF_EO /
881
882	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_First; /*< @see BS3_SEL_R3_FIRST /
883	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS16; /*< @see BS3_SEL_R3_CS16 /
884	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_DS16; /*< @see BS3_SEL_R3_DS16 /
885	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_SS16; /*< @see BS3_SEL_R3_SS16 /
886	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS32; /*< @see BS3_SEL_R3_CS32 /
887	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_DS32; /*< @see BS3_SEL_R3_DS32 /
888	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_SS32; /*< @see BS3_SEL_R3_SS32 /
889	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS64; /*< @see BS3_SEL_R3_CS64 /
890	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_DS64; /*< @see BS3_SEL_R3_DS64 /
891	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS16_EO; /*< @see BS3_SEL_R3_CS16_EO /
892	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS16_CNF; /*< @see BS3_SEL_R3_CS16_CNF /
893	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS16_CND_EO; /*< @see BS3_SEL_R3_CS16_CNF_EO /
894	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS32_EO; /*< @see BS3_SEL_R3_CS32_EO /
895	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS32_CNF; /*< @see BS3_SEL_R3_CS32_CNF /
896	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS32_CNF_EO; /*< @see BS3_SEL_R3_CS32_CNF_EO /
897	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS64_EO; /*< @see BS3_SEL_R3_CS64_EO /
898	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS64_CNF; /*< @see BS3_SEL_R3_CS64_CNF /
899	extern X86DESC BS3_FAR_DATA Bs3Gdte_R3_CS64_CNF_EO; /*< @see BS3_SEL_R3_CS64_CNF_EO /
900
901	extern X86DESC BS3_FAR_DATA Bs3GdteSpare00; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_00 /
902	extern X86DESC BS3_FAR_DATA Bs3GdteSpare01; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_01 /
903	extern X86DESC BS3_FAR_DATA Bs3GdteSpare02; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_02 /
904	extern X86DESC BS3_FAR_DATA Bs3GdteSpare03; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_03 /
905	extern X86DESC BS3_FAR_DATA Bs3GdteSpare04; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_04 /
906	extern X86DESC BS3_FAR_DATA Bs3GdteSpare05; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_05 /
907	extern X86DESC BS3_FAR_DATA Bs3GdteSpare06; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_06 /
908	extern X86DESC BS3_FAR_DATA Bs3GdteSpare07; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_07 /
909	extern X86DESC BS3_FAR_DATA Bs3GdteSpare08; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_08 /
910	extern X86DESC BS3_FAR_DATA Bs3GdteSpare09; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_09 /
911	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0a; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0a /
912	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0b; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0b /
913	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0c; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0c /
914	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0d; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0d /
915	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0e; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0e /
916	extern X86DESC BS3_FAR_DATA Bs3GdteSpare0f; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_0f /
917	extern X86DESC BS3_FAR_DATA Bs3GdteSpare10; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_10 /
918	extern X86DESC BS3_FAR_DATA Bs3GdteSpare11; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_11 /
919	extern X86DESC BS3_FAR_DATA Bs3GdteSpare12; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_12 /
920	extern X86DESC BS3_FAR_DATA Bs3GdteSpare13; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_13 /
921	extern X86DESC BS3_FAR_DATA Bs3GdteSpare14; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_14 /
922	extern X86DESC BS3_FAR_DATA Bs3GdteSpare15; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_15 /
923	extern X86DESC BS3_FAR_DATA Bs3GdteSpare16; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_16 /
924	extern X86DESC BS3_FAR_DATA Bs3GdteSpare17; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_17 /
925	extern X86DESC BS3_FAR_DATA Bs3GdteSpare18; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_18 /
926	extern X86DESC BS3_FAR_DATA Bs3GdteSpare19; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_19 /
927	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1a; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1a /
928	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1b; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1b /
929	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1c; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1c /
930	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1d; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1d /
931	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1e; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1e /
932	extern X86DESC BS3_FAR_DATA Bs3GdteSpare1f; /*< GDT entry for playing with in testcases. @see BS3_SEL_SPARE_1f /
933
934	/** GDTs setting up the tiled 16-bit access to the first 16 MBs of memory.
935	* @see BS3_SEL_TILED, BS3_SEL_TILED_LAST, BS3_SEL_TILED_AREA_SIZE */
936	extern X86DESC BS3_FAR_DATA Bs3GdteTiled[256];
937	/** Free GDTes, part \#1. */
938	extern X86DESC BS3_FAR_DATA Bs3GdteFreePart1[64];
939	/** The BS3TEXT16/BS3CLASS16CODE GDT entry. @see BS3_SEL_TEXT16 */
940	extern X86DESC BS3_FAR_DATA Bs3Gdte_CODE16;
941	/** Free GDTes, part \#2. */
942	extern X86DESC BS3_FAR_DATA Bs3GdteFreePart2[511];
943	/** The BS3SYSTEM16 GDT entry. */
944	extern X86DESC BS3_FAR_DATA Bs3Gdte_SYSTEM16;
945	/** Free GDTes, part \#3. */
946	extern X86DESC BS3_FAR_DATA Bs3GdteFreePart3[223];
947	/** The BS3DATA16/BS3KIT_GRPNM_DATA16 GDT entry. */
948	extern X86DESC BS3_FAR_DATA Bs3Gdte_DATA16;
949
950	/** Free GDTes, part \#4. */
951	extern X86DESC BS3_FAR_DATA Bs3GdteFreePart4[211];
952
953	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage08; /*< GDT entry 8 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_08 /
954	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage07; /*< GDT entry 7 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_07 /
955	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage06; /*< GDT entry 6 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_06 /
956	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage05; /*< GDT entry 5 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_05 /
957	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage04; /*< GDT entry 4 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_04 /
958	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage03; /*< GDT entry 3 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_03 /
959	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage02; /*< GDT entry 2 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_02 /
960	extern X86DESC BS3_FAR_DATA Bs3GdtePreTestPage01; /*< GDT entry 1 selectors prior to the test page, testcase resource. @see BS3_SEL_PRE_TEST_PAGE_01 /
961	/** Array of GDT entries starting on a page boundrary and filling (almost) the
962	* whole page. This is for playing with paging and GDT usage.
963	* @see BS3_SEL_TEST_PAGE */
964	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage[2043];
965	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage00; /*< GDT entry 0 on the test page (convenience). @see BS3_SEL_TEST_PAGE_00 /
966	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage01; /*< GDT entry 1 on the test page (convenience). @see BS3_SEL_TEST_PAGE_01 /
967	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage02; /*< GDT entry 2 on the test page (convenience). @see BS3_SEL_TEST_PAGE_02 /
968	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage03; /*< GDT entry 3 on the test page (convenience). @see BS3_SEL_TEST_PAGE_03 /
969	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage04; /*< GDT entry 4 on the test page (convenience). @see BS3_SEL_TEST_PAGE_04 /
970	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage05; /*< GDT entry 5 on the test page (convenience). @see BS3_SEL_TEST_PAGE_05 /
971	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage06; /*< GDT entry 6 on the test page (convenience). @see BS3_SEL_TEST_PAGE_06 /
972	extern X86DESC BS3_FAR_DATA Bs3GdteTestPage07; /*< GDT entry 7 on the test page (convenience). @see BS3_SEL_TEST_PAGE_07 /
973
974	/** The end of the GDT (exclusive - contains eye-catcher string). */
975	extern X86DESC BS3_FAR_DATA Bs3GdtEnd;
976
977	/** The default 16-bit TSS. */
978	extern X86TSS16 BS3_FAR_DATA Bs3Tss16;
979	extern X86TSS16 BS3_FAR_DATA Bs3Tss16DoubleFault;
980	extern X86TSS16 BS3_FAR_DATA Bs3Tss16Spare0;
981	extern X86TSS16 BS3_FAR_DATA Bs3Tss16Spare1;
982	/** The default 32-bit TSS. */
983	extern X86TSS32 BS3_FAR_DATA Bs3Tss32;
984	extern X86TSS32 BS3_FAR_DATA Bs3Tss32DoubleFault;
985	extern X86TSS32 BS3_FAR_DATA Bs3Tss32Spare0;
986	extern X86TSS32 BS3_FAR_DATA Bs3Tss32Spare1;
987	/** The default 64-bit TSS. */
988	extern X86TSS64 BS3_FAR_DATA Bs3Tss64;
989	extern X86TSS64 BS3_FAR_DATA Bs3Tss64Spare0;
990	extern X86TSS64 BS3_FAR_DATA Bs3Tss64Spare1;
991	extern X86TSS64 BS3_FAR_DATA Bs3Tss64WithIopb;
992	extern X86TSS32 BS3_FAR_DATA Bs3Tss32WithIopb;
993	/** Interrupt redirection bitmap used by Bs3Tss32WithIopb. */
994	extern uint8_t BS3_FAR_DATA Bs3SharedIntRedirBm[32];
995	/** I/O permission bitmap used by Bs3Tss32WithIopb and Bs3Tss64WithIopb. */
996	extern uint8_t BS3_FAR_DATA Bs3SharedIobp[8192+2];
997	/** End of the I/O permission bitmap (exclusive). */
998	extern uint8_t BS3_FAR_DATA Bs3SharedIobpEnd;
999	/** 16-bit IDT. */
1000	extern X86DESC BS3_FAR_DATA Bs3Idt16[256];
1001	/** 32-bit IDT. */
1002	extern X86DESC BS3_FAR_DATA Bs3Idt32[256];
1003	/** 64-bit IDT. */
1004	extern X86DESC64 BS3_FAR_DATA Bs3Idt64[256];
1005	/** Structure for the LIDT instruction for loading the 16-bit IDT. */
1006	extern X86XDTR64 BS3_FAR_DATA Bs3Lidt_Idt16;
1007	/** Structure for the LIDT instruction for loading the 32-bit IDT. */
1008	extern X86XDTR64 BS3_FAR_DATA Bs3Lidt_Idt32;
1009	/** Structure for the LIDT instruction for loading the 64-bit IDT. */
1010	extern X86XDTR64 BS3_FAR_DATA Bs3Lidt_Idt64;
1011	/** Structure for the LIDT instruction for loading the real mode interrupt
1012	* vector table. */
1013	extern X86XDTR64 BS3_FAR_DATA Bs3Lidt_Ivt;
1014	/** Structure for the LGDT instruction for loading the current GDT. */
1015	extern X86XDTR64 BS3_FAR_DATA Bs3Lgdt_Gdt;
1016	/** Structure for the LGDT instruction for loading the default GDT. */
1017	extern X86XDTR64 BS3_FAR_DATA Bs3LgdtDef_Gdt;
1018	/** The LDT (all entries are empty, fill in for testing). */
1019	extern X86DESC BS3_FAR_DATA Bs3Ldt[116];
1020	/** The end of the LDT (exclusive). */
1021	extern X86DESC BS3_FAR_DATA Bs3LdtEnd;
1022
1023	/** @} */
1024
1025
1026	/** @name Segment start and end markers, sizes.
1027	* @{ */
1028	/** Start of the BS3TEXT16 segment. */
1029	extern uint8_t BS3_FAR_DATA Bs3Text16_StartOfSegment;
1030	/** End of the BS3TEXT16 segment. */
1031	extern uint8_t BS3_FAR_DATA Bs3Text16_EndOfSegment;
1032	/** The size of the BS3TEXT16 segment. */
1033	extern uint16_t BS3_FAR_DATA Bs3Text16_Size;
1034
1035	/** Start of the BS3SYSTEM16 segment. */
1036	extern uint8_t BS3_FAR_DATA Bs3System16_StartOfSegment;
1037	/** End of the BS3SYSTEM16 segment. */
1038	extern uint8_t BS3_FAR_DATA Bs3System16_EndOfSegment;
1039
1040	/** Start of the BS3DATA16/BS3KIT_GRPNM_DATA16 segment. */
1041	extern uint8_t BS3_FAR_DATA Bs3Data16_StartOfSegment;
1042	/** End of the BS3DATA16/BS3KIT_GRPNM_DATA16 segment. */
1043	extern uint8_t BS3_FAR_DATA Bs3Data16_EndOfSegment;
1044
1045	/** Start of the BS3RMTEXT16 segment. */
1046	extern uint8_t BS3_FAR_DATA Bs3RmText16_StartOfSegment;
1047	/** End of the BS3RMTEXT16 segment. */
1048	extern uint8_t BS3_FAR_DATA Bs3RmText16_EndOfSegment;
1049	/** The size of the BS3RMTEXT16 segment. */
1050	extern uint16_t BS3_FAR_DATA Bs3RmText16_Size;
1051	/** The flat start address of the BS3X0TEXT16 segment. */
1052	extern uint32_t BS3_FAR_DATA Bs3RmText16_FlatAddr;
1053
1054	/** Start of the BS3X0TEXT16 segment. */
1055	extern uint8_t BS3_FAR_DATA Bs3X0Text16_StartOfSegment;
1056	/** End of the BS3X0TEXT16 segment. */
1057	extern uint8_t BS3_FAR_DATA Bs3X0Text16_EndOfSegment;
1058	/** The size of the BS3X0TEXT16 segment. */
1059	extern uint16_t BS3_FAR_DATA Bs3X0Text16_Size;
1060	/** The flat start address of the BS3X0TEXT16 segment. */
1061	extern uint32_t BS3_FAR_DATA Bs3X0Text16_FlatAddr;
1062
1063	/** Start of the BS3X1TEXT16 segment. */
1064	extern uint8_t BS3_FAR_DATA Bs3X1Text16_StartOfSegment;
1065	/** End of the BS3X1TEXT16 segment. */
1066	extern uint8_t BS3_FAR_DATA Bs3X1Text16_EndOfSegment;
1067	/** The size of the BS3X1TEXT16 segment. */
1068	extern uint16_t BS3_FAR_DATA Bs3X1Text16_Size;
1069	/** The flat start address of the BS3X1TEXT16 segment. */
1070	extern uint32_t BS3_FAR_DATA Bs3X1Text16_FlatAddr;
1071
1072	/** Start of the BS3TEXT32 segment. */
1073	extern uint8_t BS3_FAR_DATA Bs3Text32_StartOfSegment;
1074	/** Start of the BS3TEXT32 segment. */
1075	extern uint8_t BS3_FAR_DATA Bs3Text32_EndOfSegment;
1076
1077	/** Start of the BS3DATA32 segment. */
1078	extern uint8_t BS3_FAR_DATA Bs3Data32_StartOfSegment;
1079	/** Start of the BS3DATA32 segment. */
1080	extern uint8_t BS3_FAR_DATA Bs3Data32_EndOfSegment;
1081
1082	/** Start of the BS3TEXT64 segment. */
1083	extern uint8_t BS3_FAR_DATA Bs3Text64_StartOfSegment;
1084	/** Start of the BS3TEXT64 segment. */
1085	extern uint8_t BS3_FAR_DATA Bs3Text64_EndOfSegment;
1086
1087	/** Start of the BS3DATA64 segment. */
1088	extern uint8_t BS3_FAR_DATA Bs3Data64_StartOfSegment;
1089	/** Start of the BS3DATA64 segment. */
1090	extern uint8_t BS3_FAR_DATA Bs3Data64_EndOfSegment;
1091
1092	/** The size of the Data16, Text32, Text64, Data32 and Data64 blob. */
1093	extern uint32_t BS3_FAR_DATA Bs3Data16Thru64Text32And64_TotalSize;
1094	/** The total image size (from Text16 thu Data64). */
1095	extern uint32_t BS3_FAR_DATA Bs3TotalImageSize;
1096	/** @} */
1097
1098
1099	/** Lower case hex digits. */
1100	extern char const g_achBs3HexDigits[16+1];
1101	/** Upper case hex digits. */
1102	extern char const g_achBs3HexDigitsUpper[16+1];
1103
1104
1105	/** The current mode (BS3_MODE_XXX) of CPU \#0. */
1106	extern uint8_t g_bBs3CurrentMode;
1107
1108	/** Hint for 16-bit trap handlers regarding the high word of EIP. */
1109	extern uint32_t g_uBs3TrapEipHint;
1110
1111	/** Copy of the original real-mode interrupt vector table. */
1112	extern RTFAR16 g_aBs3RmIvtOriginal[256];
1113
1114
1115	#ifdef __WATCOMC__
1116	/**
1117	* Executes the SMSW instruction and returns the value.
1118	*
1119	* @returns Machine status word.
1120	*/
1121	uint16_t Bs3AsmSmsw(void);
1122	# pragma aux Bs3AsmSmsw = \
1123	".286" \
1124	"smsw ax" \
1125	value [ax] modify exact [ax] nomemory;
1126	#endif
1127
1128
1129	/** @defgroup bs3kit_cross_ptr Cross Context Pointer Type
1130	*
1131	* The cross context pointer type is
1132	*
1133	* @{ */
1134
1135	/**
1136	* Cross context pointer base type.
1137	*/
1138	typedef union BS3XPTR
1139	{
1140	/** The flat pointer. */
1141	uint32_t uFlat;
1142	/** 16-bit view. */
1143	struct
1144	{
1145	uint16_t uLow;
1146	uint16_t uHigh;
1147	} u;
1148	#if ARCH_BITS == 16
1149	/** 16-bit near pointer. */
1150	void __near *pvNear;
1151	#elif ARCH_BITS == 32
1152	/** 32-bit pointer. */
1153	void *pvRaw;
1154	#endif
1155	} BS3XPTR;
1156	AssertCompileSize(BS3XPTR, 4);
1157
1158
1159	/** @def BS3_XPTR_DEF_INTERNAL
1160	* Internal worker.
1161	*
1162	* @param a_Scope RT_NOTHING if structure or global, static or extern
1163	* otherwise.
1164	* @param a_Type The type we're pointing to.
1165	* @param a_Name The member or variable name.
1166	* @internal
1167	*/
1168	#if ARCH_BITS == 16
1169	# define BS3_XPTR_DEF_INTERNAL(a_Scope, a_Type, a_Name) \
1170	a_Scope union \
1171	{ \
1172	BS3XPTR XPtr; \
1173	a_Type __near *pNearTyped; \
1174	} a_Name
1175	#elif ARCH_BITS == 32
1176	# define BS3_XPTR_DEF_INTERNAL(a_Scope, a_Type, a_Name) \
1177	a_Scope union \
1178	{ \
1179	BS3XPTR XPtr; \
1180	a_Type *pTyped; \
1181	} a_Name
1182	#elif ARCH_BITS == 64
1183	# define BS3_XPTR_DEF_INTERNAL(a_Scope, a_Type, a_Name) \
1184	a_Scope union \
1185	{ \
1186	BS3XPTR XPtr; \
1187	} a_Name
1188	#else
1189	# error "ARCH_BITS"
1190	#endif
1191
1192	/** @def BS3_XPTR_MEMBER
1193	* Defines a pointer member that can be shared by all CPU modes.
1194	*
1195	* @param a_Type The type we're pointing to.
1196	* @param a_Name The member or variable name.
1197	*/
1198	#define BS3_XPTR_MEMBER(a_Type, a_Name) BS3_XPTR_DEF_INTERNAL(RT_NOTHING, a_Type, a_Name)
1199
1200	/** @def BS3_XPTR_AUTO
1201	* Defines a pointer static variable for working with an XPTR.
1202	*
1203	* This is typically used to convert flat pointers into context specific
1204	* pointers.
1205	*
1206	* @param a_Type The type we're pointing to.
1207	* @param a_Name The member or variable name.
1208	*/
1209	#define BS3_XPTR_AUTO(a_Type, a_Name) BS3_XPTR_DEF_INTERNAL(RT_NOTHING, a_Type, a_Name)
1210
1211	/** @def BS3_XPTR_SET_FLAT
1212	* Sets a cross context pointer.
1213	*
1214	* @param a_Type The type we're pointing to.
1215	* @param a_Name The member or variable name.
1216	* @param a_uFlatPtr The flat pointer value to assign. If the x-pointer is
1217	* used in real mode, this must be less than 1MB.
1218	* Otherwise the limit is 16MB (due to selector tiling).
1219	*/
1220	#define BS3_XPTR_SET_FLAT(a_Type, a_Name, a_uFlatPtr) \
1221	do { a_Name.XPtr.uFlat = (a_uFlatPtr); } while (0)
1222
1223	/** @def BS3_XPTR_GET_FLAT
1224	* Gets the flat address of a cross context pointer.
1225	*
1226	* @returns 32-bit flat pointer.
1227	* @param a_Type The type we're pointing to.
1228	* @param a_Name The member or variable name.
1229	*/
1230	#define BS3_XPTR_GET_FLAT(a_Type, a_Name) (a_Name.XPtr.uFlat)
1231
1232	/** @def BS3_XPTR_GET_FLAT_LOW
1233	* Gets the low 16 bits of the flat address.
1234	*
1235	* @returns Low 16 bits of the flat pointer.
1236	* @param a_Type The type we're pointing to.
1237	* @param a_Name The member or variable name.
1238	*/
1239	#define BS3_XPTR_GET_FLAT_LOW(a_Type, a_Name) (a_Name.XPtr.u.uLow)
1240
1241
1242	#if ARCH_BITS == 16
1243
1244	/**
1245	* Gets the current ring number.
1246	* @returns Ring number.
1247	*/
1248	DECLINLINE(uint16_t) Bs3Sel16GetCurRing(void);
1249	# pragma aux Bs3Sel16GetCurRing = \
1250	"mov ax, ss" \
1251	"and ax, 3" \
1252	value [ax] modify exact [ax] nomemory;
1253
1254	/**
1255	* Converts the high word of a flat pointer into a 16-bit selector.
1256	*
1257	* This makes use of the tiled area. It also handles real mode.
1258	*
1259	* @returns Segment selector value.
1260	* @param uHigh The high part of flat pointer.
1261	* @sa BS3_XPTR_GET, BS3_XPTR_SET
1262	*/
1263	DECLINLINE(__segment) Bs3Sel16HighFlatPtrToSelector(uint16_t uHigh)
1264	{
1265	if (!BS3_MODE_IS_RM_OR_V86(g_bBs3CurrentMode))
1266	return (__segment)(((uHigh << 3) + BS3_SEL_TILED) \| Bs3Sel16GetCurRing());
1267	return (__segment)(uHigh << 12);
1268	}
1269
1270	#endif /* ARCH_BITS == 16 */
1271
1272	/** @def BS3_XPTR_GET
1273	* Gets the current context pointer value.
1274	*
1275	* @returns Usable pointer.
1276	* @param a_Type The type we're pointing to.
1277	* @param a_Name The member or variable name.
1278	*/
1279	#if ARCH_BITS == 16
1280	# define BS3_XPTR_GET(a_Type, a_Name) \
1281	((a_Type BS3_FAR *)BS3_FP_MAKE(Bs3Sel16HighFlatPtrToSelector((a_Name).XPtr.u.uHigh), (a_Name).pNearTyped))
1282	#elif ARCH_BITS == 32
1283	# define BS3_XPTR_GET(a_Type, a_Name) ((a_Name).pTyped)
1284	#elif ARCH_BITS == 64
1285	# define BS3_XPTR_GET(a_Type, a_Name) ((a_Type *)(uintptr_t)(a_Name).XPtr.uFlat)
1286	#else
1287	# error "ARCH_BITS"
1288	#endif
1289
1290	/** @def BS3_XPTR_SET
1291	* Gets the current context pointer value.
1292	*
1293	* @returns Usable pointer.
1294	* @param a_Type The type we're pointing to.
1295	* @param a_Name The member or variable name.
1296	* @param a_pValue The new pointer value, current context pointer.
1297	*/
1298	#if ARCH_BITS == 16
1299	# define BS3_XPTR_SET(a_Type, a_Name, a_pValue) \
1300	do { \
1301	a_Type BS3_FAR *pTypeCheck = (a_pValue); \
1302	if (BS3_MODE_IS_RM_OR_V86(g_bBs3CurrentMode)) \
1303	(a_Name).XPtr.uFlat = BS3_FP_OFF(pTypeCheck) + ((uint32_t)BS3_FP_SEG(pTypeCheck) << 4); \
1304	else \
1305	{ \
1306	(a_Name).XPtr.u.uLow = BS3_FP_OFF(pTypeCheck); \
1307	(a_Name).XPtr.u.uHigh = ((BS3_FP_SEG(pTypeCheck) & UINT16_C(0xfff8)) - BS3_SEL_TILED) >> 3; \
1308	} \
1309	} while (0)
1310	#elif ARCH_BITS == 32
1311	# define BS3_XPTR_SET(a_Type, a_Name, a_pValue) \
1312	do { (a_Name).pTyped = (a_pValue); } while (0)
1313	#elif ARCH_BITS == 64
1314	# define BS3_XPTR_SET(a_Type, a_Name, a_pValue) \
1315	do { \
1316	a_Type *pTypeCheck = (a_pValue); \
1317	(a_Name).XPtr.uFlat = (uint32_t)(uintptr_t)pTypeCheck; \
1318	} while (0)
1319	#else
1320	# error "ARCH_BITS"
1321	#endif
1322
1323
1324	/** @def BS3_XPTR_IS_NULL
1325	* Checks if the cross context pointer is NULL.
1326	*
1327	* @returns true if NULL, false if not.
1328	* @param a_Type The type we're pointing to.
1329	* @param a_Name The member or variable name.
1330	*/
1331	#define BS3_XPTR_IS_NULL(a_Type, a_Name) ((a_Name).XPtr.uFlat == 0)
1332
1333	/**
1334	* Gets a working pointer from a flat address.
1335	*
1336	* @returns Current context pointer.
1337	* @param uFlatPtr The flat address to convert (32-bit or 64-bit).
1338	*/
1339	DECLINLINE(void BS3_FAR *) Bs3XptrFlatToCurrent(RTCCUINTXREG uFlatPtr)
1340	{
1341	BS3_XPTR_AUTO(void, pTmp);
1342	BS3_XPTR_SET_FLAT(void, pTmp, uFlatPtr);
1343	return BS3_XPTR_GET(void, pTmp);
1344	}
1345
1346	/** @} */
1347
1348
1349
1350	/** @defgroup grp_bs3kit_cmn Common Functions and Data
1351	*
1352	* The common functions comes in three variations: 16-bit, 32-bit and 64-bit.
1353	* Templated code uses the #BS3_CMN_NM macro to mangle the name according to the
1354	* desired
1355	*
1356	* @{
1357	*/
1358
1359	/** @def BS3_CMN_PROTO_INT
1360	* Internal macro for prototyping all the variations of a common function.
1361	* @param a_RetType The return type.
1362	* @param a_Name The function basename.
1363	* @param a_Params The parameter list (in parentheses).
1364	* @sa BS3_CMN_PROTO_STUB, BS3_CMN_PROTO_NOSB
1365	*/
1366	#if ARCH_BITS == 16
1367	# ifndef BS3_USE_ALT_16BIT_TEXT_SEG
1368	# define BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params) \
1369	BS3_DECL_NEAR(a_RetType) BS3_CMN_NM(a_Name) a_Params; \
1370	BS3_DECL_FAR(a_RetType) BS3_CMN_FAR_NM(a_Name) a_Params
1371	# else
1372	# define BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params) \
1373	BS3_DECL_FAR(a_RetType) BS3_CMN_FAR_NM(a_Name) a_Params
1374	# endif
1375	#else
1376	# define BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params) \
1377	BS3_DECL_NEAR(a_RetType) BS3_CMN_NM(a_Name) a_Params
1378	#endif
1379
1380	/** @def BS3_CMN_PROTO_STUB
1381	* Macro for prototyping all the variations of a common function with automatic
1382	* near -> far stub.
1383	*
1384	* @param a_RetType The return type.
1385	* @param a_Name The function basename.
1386	* @param a_Params The parameter list (in parentheses).
1387	* @sa BS3_CMN_PROTO_NOSB
1388	*/
1389	#define BS3_CMN_PROTO_STUB(a_RetType, a_Name, a_Params) BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params)
1390
1391	/** @def BS3_CMN_PROTO_NOSB
1392	* Macro for prototyping all the variations of a common function without any
1393	* near > far stub.
1394	*
1395	* @param a_RetType The return type.
1396	* @param a_Name The function basename.
1397	* @param a_Params The parameter list (in parentheses).
1398	* @sa BS3_CMN_PROTO_STUB
1399	*/
1400	#define BS3_CMN_PROTO_NOSB(a_RetType, a_Name, a_Params) BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params)
1401
1402	/** @def BS3_CMN_PROTO_FARSTUB
1403	* Macro for prototyping all the variations of a common function with automatic
1404	* far -> near stub.
1405	*
1406	* @param a_cbParam16 The size of the 16-bit parameter list in bytes.
1407	* @param a_RetType The return type.
1408	* @param a_Name The function basename.
1409	* @param a_Params The parameter list (in parentheses).
1410	* @sa BS3_CMN_PROTO_STUB
1411	*/
1412	#define BS3_CMN_PROTO_FARSTUB(a_cbParam16, a_RetType, a_Name, a_Params) BS3_CMN_PROTO_INT(a_RetType, a_Name, a_Params)
1413
1414
1415	/** @def BS3_CMN_DEF
1416	* Macro for defining a common function.
1417	*
1418	* This makes 16-bit common function far, while 32-bit and 64-bit are near.
1419	*
1420	* @param a_RetType The return type.
1421	* @param a_Name The function basename.
1422	* @param a_Params The parameter list (in parentheses).
1423	*/
1424	#if ARCH_BITS == 16
1425	# define BS3_CMN_DEF(a_RetType, a_Name, a_Params) \
1426	BS3_DECL_FAR(a_RetType) BS3_CMN_FAR_NM(a_Name) a_Params
1427	#else
1428	# define BS3_CMN_DEF(a_RetType, a_Name, a_Params) \
1429	BS3_DECL_NEAR(a_RetType) BS3_CMN_NM(a_Name) a_Params
1430	#endif
1431
1432	/** @def BS3_ASSERT
1433	* Assert that an expression is true.
1434	*
1435	* Calls Bs3Panic if false and it's a strict build. Does nothing in
1436	* non-strict builds. */
1437	#ifdef BS3_STRICT
1438	# define BS3_ASSERT(a_Expr) do { if (!!(a_Expr)) { /* likely / } else { Bs3Panic(); } } while (0) /< @todo later /
1439	#else
1440	# define BS3_ASSERT(a_Expr) do { } while (0)
1441	#endif
1442
1443	/**
1444	* Panic, never return.
1445	*
1446	* The current implementation will only halt the CPU.
1447	*/
1448	BS3_CMN_PROTO_NOSB(DECL_NO_RETURN(void), Bs3Panic,(void));
1449	#if !defined(BS3_KIT_WITH_NO_RETURN) && defined(__WATCOMC__)
1450	# pragma aux Bs3Panic_c16 __aborts
1451	# pragma aux Bs3Panic_f16 __aborts
1452	# pragma aux Bs3Panic_c32 __aborts
1453	#endif
1454
1455
1456	/**
1457	* Translate a mode into a string.
1458	*
1459	* @returns Pointer to read-only mode name string.
1460	* @param bMode The mode value (BS3_MODE_XXX).
1461	*/
1462	BS3_CMN_PROTO_STUB(const char BS3_FAR *, Bs3GetModeName,(uint8_t bMode));
1463
1464	/**
1465	* Shutdown the system, never returns.
1466	*
1467	* This currently only works for VMs. When running on real systems it will
1468	* just halt the CPU.
1469	*/
1470	BS3_CMN_PROTO_NOSB(void, Bs3Shutdown,(void));
1471
1472	/**
1473	* Prints a 32-bit unsigned value as decimal to the screen.
1474	*
1475	* @param uValue The 32-bit value.
1476	*/
1477	BS3_CMN_PROTO_NOSB(void, Bs3PrintU32,(uint32_t uValue));
1478
1479	/**
1480	* Prints a 32-bit unsigned value as hex to the screen.
1481	*
1482	* @param uValue The 32-bit value.
1483	*/
1484	BS3_CMN_PROTO_NOSB(void, Bs3PrintX32,(uint32_t uValue));
1485
1486	/**
1487	* Formats and prints a string to the screen.
1488	*
1489	* See #Bs3StrFormatV for supported format types.
1490	*
1491	* @param pszFormat The format string.
1492	* @param ... Format arguments.
1493	*/
1494	BS3_CMN_PROTO_STUB(size_t, Bs3Printf,(const char BS3_FAR *pszFormat, ...));
1495
1496	/**
1497	* Formats and prints a string to the screen, va_list version.
1498	*
1499	* See #Bs3StrFormatV for supported format types.
1500	*
1501	* @param pszFormat The format string.
1502	* @param va Format arguments.
1503	*/
1504	BS3_CMN_PROTO_STUB(size_t, Bs3PrintfV,(const char BS3_FAR *pszFormat, va_list va));
1505
1506	/**
1507	* Prints a string to the screen.
1508	*
1509	* @param pszString The string to print.
1510	*/
1511	BS3_CMN_PROTO_STUB(void, Bs3PrintStr,(const char BS3_FAR *pszString));
1512
1513	/**
1514	* Prints a string to the screen.
1515	*
1516	* @param pszString The string to print. Any terminator charss will be printed.
1517	* @param cchString The exact number of characters to print.
1518	*/
1519	BS3_CMN_PROTO_NOSB(void, Bs3PrintStrN,(const char BS3_FAR *pszString, size_t cchString));
1520
1521	/**
1522	* Prints a char to the screen.
1523	*
1524	* @param ch The character to print.
1525	*/
1526	BS3_CMN_PROTO_NOSB(void, Bs3PrintChr,(char ch));
1527
1528
1529	/**
1530	* An output function for #Bs3StrFormatV.
1531	*
1532	* @returns Number of characters written.
1533	* @param ch The character to write. Zero in the final call.
1534	* @param pvUser User argument supplied to #Bs3StrFormatV.
1535	*/
1536	typedef BS3_DECL_CALLBACK(size_t) FNBS3STRFORMATOUTPUT(char ch, void BS3_FAR *pvUser);
1537	/** Pointer to an output function for #Bs3StrFormatV. */
1538	typedef FNBS3STRFORMATOUTPUT *PFNBS3STRFORMATOUTPUT;
1539
1540	/**
1541	* Formats a string, sending the output to @a pfnOutput.
1542	*
1543	* Supported types:
1544	* - %RI8, %RI16, %RI32, %RI64
1545	* - %RU8, %RU16, %RU32, %RU64
1546	* - %RX8, %RX16, %RX32, %RX64
1547	* - %i, %d
1548	* - %u
1549	* - %x
1550	* - %c
1551	* - %p (far pointer)
1552	* - %s (far pointer)
1553	*
1554	* @returns Sum of @a pfnOutput return values.
1555	* @param pszFormat The format string.
1556	* @param va Format arguments.
1557	* @param pfnOutput The output function.
1558	* @param pvUser The user argument for the output function.
1559	*/
1560	BS3_CMN_PROTO_STUB(size_t, Bs3StrFormatV,(const char BS3_FAR *pszFormat, va_list va,
1561	PFNBS3STRFORMATOUTPUT pfnOutput, void BS3_FAR *pvUser));
1562
1563	/**
1564	* Formats a string into a buffer.
1565	*
1566	* See #Bs3StrFormatV for supported format types.
1567	*
1568	* @returns The length of the formatted string (excluding terminator).
1569	* This will be higher or equal to @c cbBuf in case of an overflow.
1570	* @param pszBuf The output buffer.
1571	* @param cbBuf The size of the output buffer.
1572	* @param pszFormat The format string.
1573	* @param va Format arguments.
1574	*/
1575	BS3_CMN_PROTO_STUB(size_t, Bs3StrPrintfV,(char BS3_FAR pszBuf, size_t cbBuf, const char BS3_FAR pszFormat, va_list va));
1576
1577	/**
1578	* Formats a string into a buffer.
1579	*
1580	* See #Bs3StrFormatV for supported format types.
1581	*
1582	* @returns The length of the formatted string (excluding terminator).
1583	* This will be higher or equal to @c cbBuf in case of an overflow.
1584	* @param pszBuf The output buffer.
1585	* @param cbBuf The size of the output buffer.
1586	* @param pszFormat The format string.
1587	* @param ... Format arguments.
1588	*/
1589	BS3_CMN_PROTO_STUB(size_t, Bs3StrPrintf,(char BS3_FAR pszBuf, size_t cbBuf, const char BS3_FAR pszFormat, ...));
1590
1591
1592	/**
1593	* Finds the length of a zero terminated string.
1594	*
1595	* @returns String length in chars/bytes.
1596	* @param pszString The string to examine.
1597	*/
1598	BS3_CMN_PROTO_STUB(size_t, Bs3StrLen,(const char BS3_FAR *pszString));
1599
1600	/**
1601	* Finds the length of a zero terminated string, but with a max length.
1602	*
1603	* @returns String length in chars/bytes, or @a cchMax if no zero-terminator
1604	* was found before we reached the limit.
1605	* @param pszString The string to examine.
1606	* @param cchMax The max length to examine.
1607	*/
1608	BS3_CMN_PROTO_STUB(size_t, Bs3StrNLen,(const char BS3_FAR *pszString, size_t cchMax));
1609
1610	/**
1611	* CRT style unsafe strcpy.
1612	*
1613	* @returns pszDst.
1614	* @param pszDst The destination buffer. Must be large enough to
1615	* hold the source string.
1616	* @param pszSrc The source string.
1617	*/
1618	BS3_CMN_PROTO_STUB(char BS3_FAR , Bs3StrCpy,(char BS3_FAR pszDst, const char BS3_FAR *pszSrc));
1619
1620	/**
1621	* CRT style memcpy.
1622	*
1623	* @returns pvDst
1624	* @param pvDst The destination buffer.
1625	* @param pvSrc The source buffer.
1626	* @param cbToCopy The number of bytes to copy.
1627	*/
1628	BS3_CMN_PROTO_STUB(void BS3_FAR , Bs3MemCpy,(void BS3_FAR pvDst, const void BS3_FAR *pvSrc, size_t cbToCopy));
1629
1630	/**
1631	* GNU (?) style mempcpy.
1632	*
1633	* @returns pvDst + cbCopy
1634	* @param pvDst The destination buffer.
1635	* @param pvSrc The source buffer.
1636	* @param cbToCopy The number of bytes to copy.
1637	*/
1638	BS3_CMN_PROTO_STUB(void BS3_FAR , Bs3MemPCpy,(void BS3_FAR pvDst, const void BS3_FAR *pvSrc, size_t cbToCopy));
1639
1640	/**
1641	* CRT style memmove (overlapping buffers is fine).
1642	*
1643	* @returns pvDst
1644	* @param pvDst The destination buffer.
1645	* @param pvSrc The source buffer.
1646	* @param cbToCopy The number of bytes to copy.
1647	*/
1648	BS3_CMN_PROTO_STUB(void BS3_FAR , Bs3MemMove,(void BS3_FAR pvDst, const void BS3_FAR *pvSrc, size_t cbToCopy));
1649
1650	/**
1651	* BSD style bzero.
1652	*
1653	* @param pvDst The buffer to be zeroed.
1654	* @param cbDst The number of bytes to zero.
1655	*/
1656	BS3_CMN_PROTO_NOSB(void, Bs3MemZero,(void BS3_FAR *pvDst, size_t cbDst));
1657
1658	/**
1659	* CRT style memset.
1660	*
1661	* @param pvDst The buffer to be fill.
1662	* @param bFiller The filler byte.
1663	* @param cbDst The number of bytes to fill.
1664	*/
1665	BS3_CMN_PROTO_NOSB(void, Bs3MemSet,(void BS3_FAR *pvDst, uint8_t bFiller, size_t cbDst));
1666
1667	/**
1668	* CRT style memchr.
1669	*
1670	* @param pvHaystack The memory to scan for @a bNeedle.
1671	* @param bNeedle The byte to search for.
1672	* @param cbHaystack The amount of memory to search.
1673	*/
1674	BS3_CMN_PROTO_NOSB(void BS3_FAR , Bs3MemChr,(void const BS3_FAR pvHaystack, uint8_t bNeedle, size_t cbHaystack));
1675
1676	/**
1677	* CRT style memcmp.
1678	*
1679	* @returns 0 if equal. Negative if the left side is 'smaller' than the right
1680	* side, and positive in the other case.
1681	* @param pv1 The left hand memory.
1682	* @param pv2 The right hand memory.
1683	* @param cb The number of bytes to compare.
1684	*/
1685	BS3_CMN_PROTO_NOSB(int, Bs3MemCmp,(void const BS3_FAR pv1, void const BS3_FAR pv2, size_t cb));
1686
1687	BS3_CMN_PROTO_STUB(void, Bs3UInt64Div,(RTUINT64U uDividend, RTUINT64U uDivisor, RTUINT64U BS3_FAR *paQuotientReminder));
1688	BS3_CMN_PROTO_STUB(void, Bs3UInt32Div,(RTUINT32U uDividend, RTUINT32U uDivisor, RTUINT32U BS3_FAR *paQuotientReminder));
1689
1690
1691	/**
1692	* Converts a protected mode 32-bit far pointer to a 32-bit flat address.
1693	*
1694	* @returns 32-bit flat address.
1695	* @param off The segment offset.
1696	* @param uSel The protected mode segment selector.
1697	*/
1698	BS3_CMN_PROTO_STUB(uint32_t, Bs3SelProtFar32ToFlat32,(uint32_t off, uint16_t uSel));
1699
1700	/**
1701	* Converts a current mode 32-bit far pointer to a 32-bit flat address.
1702	*
1703	* @returns 32-bit flat address.
1704	* @param off The segment offset.
1705	* @param uSel The current mode segment selector.
1706	*/
1707	BS3_CMN_PROTO_STUB(uint32_t, Bs3SelFar32ToFlat32,(uint32_t off, uint16_t uSel));
1708
1709	/**
1710	* Wrapper around Bs3SelFar32ToFlat32 that makes it easier to use in tight
1711	* assembly spots.
1712	*
1713	* @returns 32-bit flat address.
1714	* @param off The segment offset.
1715	* @param uSel The current mode segment selector.
1716	* @remarks All register are preserved, except return.
1717	* @remarks No 20h scratch space required in 64-bit mode.
1718	*/
1719	BS3_CMN_PROTO_FARSTUB(6, uint32_t, Bs3SelFar32ToFlat32NoClobber,(uint32_t off, uint16_t uSel));
1720
1721	/**
1722	* Converts a real mode code segment to a protected mode code segment selector.
1723	*
1724	* @returns protected mode segment selector.
1725	* @param uRealSeg Real mode code segment.
1726	* @remarks All register are preserved, except return and parameter.
1727	*/
1728	BS3_CMN_PROTO_NOSB(uint16_t, Bs3SelRealModeCodeToProtMode,(uint16_t uRealSeg));
1729
1730	/**
1731	* Converts a real mode code segment to a protected mode code segment selector.
1732	*
1733	* @returns protected mode segment selector.
1734	* @param uProtSel Real mode code segment.
1735	* @remarks All register are preserved, except return and parameter.
1736	*/
1737	BS3_CMN_PROTO_NOSB(uint16_t, Bs3SelProtModeCodeToRealMode,(uint16_t uProtSel));
1738
1739	/**
1740	* Converts a flat code address to a real mode segment and offset.
1741	*
1742	* @returns Far real mode address (high 16-bit is segment, low is offset).
1743	* @param uFlatAddr Flat code address.
1744	* @remarks All register are preserved, except return and parameter.
1745	*/
1746	BS3_CMN_PROTO_NOSB(uint32_t, Bs3SelFlatCodeToRealMode,(uint32_t uFlatAddr));
1747
1748	/**
1749	* Converts a flat code address to a protected mode 16-bit far pointer (ring-0).
1750	*
1751	* @returns Far 16-bit protected mode address (high 16-bit is segment selector,
1752	* low is segment offset).
1753	* @param uFlatAddr Flat code address.
1754	* @remarks All register are preserved, except return and parameter.
1755	*/
1756	BS3_CMN_PROTO_NOSB(uint32_t, Bs3SelFlatCodeToProtFar16,(uint32_t uFlatAddr));
1757
1758	/**
1759	* Converts a far 16:16 real mode (code) address to a flat address.
1760	*
1761	* @returns 32-bit flat address.
1762	* @param uFar1616 Far real mode address (high 16-bit is segment, low
1763	* is offset).
1764	* @remarks All register are preserved, except return.
1765	* @remarks No 20h scratch space required in 64-bit mode.
1766	* @remarks Exactly the same as Bs3SelRealModeDataToFlat, except for param.
1767	*/
1768	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelRealModeCodeToFlat,(PFNBS3FARADDRCONV uFar1616));
1769
1770	/**
1771	* Converts a flat data address to a real mode segment and offset.
1772	*
1773	* @returns Far real mode address (high 16-bit is segment, low is offset)
1774	* @param uFlatAddr Flat code address.
1775	* @remarks All register are preserved, except return.
1776	* @remarks No 20h scratch space required in 64-bit mode.
1777	*/
1778	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelFlatDataToRealMode,(uint32_t uFlatAddr));
1779
1780	/**
1781	* Converts a flat data address to a real mode segment and offset.
1782	*
1783	* @returns Far 16-bit protected mode address (high 16-bit is segment selector,
1784	* low is segment offset).
1785	* @param uFlatAddr Flat code address.
1786	* @remarks All register are preserved, except return.
1787	* @remarks No 20h scratch space required in 64-bit mode.
1788	*/
1789	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelFlatDataToProtFar16,(uint32_t uFlatAddr));
1790
1791	/**
1792	* Converts a far 16:16 data address to a real mode segment and offset.
1793	*
1794	* @returns Far real mode address (high 16-bit is segment, low is offset)
1795	* @param uFar1616 Far 16-bit protected mode address (high 16-bit is
1796	* segment selector, low is segment offset).
1797	* @remarks All register are preserved, except return.
1798	* @remarks No 20h scratch space required in 64-bit mode.
1799	*/
1800	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelProtFar16DataToRealMode,(uint32_t uFar1616));
1801
1802	/**
1803	* Converts a far 16:16 real mode address to a 16-bit protected mode address.
1804	*
1805	* @returns Far real mode address (high 16-bit is segment, low is offset)
1806	* @param uFar1616 Far real mode address (high 16-bit is segment, low
1807	* is offset).
1808	* @remarks All register are preserved, except return.
1809	* @remarks No 20h scratch space required in 64-bit mode.
1810	*/
1811	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelRealModeDataToProtFar16,(uint32_t uFar1616));
1812
1813	/**
1814	* Converts a far 16:16 data address to a flat 32-bit address.
1815	*
1816	* @returns 32-bit flat address.
1817	* @param uFar1616 Far 16-bit protected mode address (high 16-bit is
1818	* segment selector, low is segment offset).
1819	* @remarks All register are preserved, except return.
1820	* @remarks No 20h scratch space required in 64-bit mode.
1821	*/
1822	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelProtFar16DataToFlat,(uint32_t uFar1616));
1823
1824	/**
1825	* Converts a far 16:16 real mode address to a flat address.
1826	*
1827	* @returns 32-bit flat address.
1828	* @param uFar1616 Far real mode address (high 16-bit is segment, low
1829	* is offset).
1830	* @remarks All register are preserved, except return.
1831	* @remarks No 20h scratch space required in 64-bit mode.
1832	*/
1833	BS3_CMN_PROTO_FARSTUB(4, uint32_t, Bs3SelRealModeDataToFlat,(uint32_t uFar1616));
1834
1835	/**
1836	* Gets a flat address from a working poitner.
1837	*
1838	* @returns flat address (32-bit or 64-bit).
1839	* @param pv Current context pointer.
1840	*/
1841	DECLINLINE(RTCCUINTXREG) Bs3SelPtrToFlat(void BS3_FAR *pv)
1842	{
1843	#if ARCH_BITS == 16
1844	return BS3_CMN_FN_NM(Bs3SelFar32ToFlat32)(BS3_FP_OFF(pv), BS3_FP_SEG(pv));
1845	#else
1846	return (uintptr_t)pv;
1847	#endif
1848	}
1849
1850
1851	/**
1852	* Slab control structure list head.
1853	*
1854	* The slabs on the list must all have the same chunk size.
1855	*/
1856	typedef struct BS3SLABHEAD
1857	{
1858	/** Pointer to the first slab. */
1859	BS3_XPTR_MEMBER(struct BS3SLABCTL, pFirst);
1860	/** The allocation chunk size. */
1861	uint16_t cbChunk;
1862	/** Number of slabs in the list. */
1863	uint16_t cSlabs;
1864	/** Number of chunks in the list. */
1865	uint32_t cChunks;
1866	/** Number of free chunks. */
1867	uint32_t cFreeChunks;
1868	} BS3SLABHEAD;
1869	AssertCompileSize(BS3SLABHEAD, 16);
1870	/** Pointer to a slab list head. */
1871	typedef BS3SLABHEAD BS3_FAR *PBS3SLABHEAD;
1872
1873	/**
1874	* Allocation slab control structure.
1875	*
1876	* This may live at the start of the slab for 4KB slabs, while in a separate
1877	* static location for the larger ones.
1878	*/
1879	typedef struct BS3SLABCTL
1880	{
1881	/** Pointer to the next slab control structure in this list. */
1882	BS3_XPTR_MEMBER(struct BS3SLABCTL, pNext);
1883	/** Pointer to the slab list head. */
1884	BS3_XPTR_MEMBER(BS3SLABHEAD, pHead);
1885	/** The base address of the slab. */
1886	BS3_XPTR_MEMBER(uint8_t, pbStart);
1887	/** Number of chunks in this slab. */
1888	uint16_t cChunks;
1889	/** Number of currently free chunks. */
1890	uint16_t cFreeChunks;
1891	/** The chunk size. */
1892	uint16_t cbChunk;
1893	/** The shift count corresponding to cbChunk.
1894	* This is for turning a chunk number into a byte offset and vice versa. */
1895	uint16_t cChunkShift;
1896	/** Bitmap where set bits indicates allocated blocks (variable size,
1897	* multiple of 4). */
1898	uint8_t bmAllocated[4];
1899	} BS3SLABCTL;
1900	/** Pointer to a bs3kit slab control structure. */
1901	typedef BS3SLABCTL BS3_FAR *PBS3SLABCTL;
1902
1903	/** The chunks must all be in the same 16-bit segment tile. */
1904	#define BS3_SLAB_ALLOC_F_SAME_TILE UINT16_C(0x0001)
1905
1906	/**
1907	* Initializes a slab.
1908	*
1909	* @param pSlabCtl The slab control structure to initialize.
1910	* @param cbSlabCtl The size of the slab control structure.
1911	* @param uFlatSlabPtr The base address of the slab.
1912	* @param cbSlab The size of the slab.
1913	* @param cbChunk The chunk size.
1914	*/
1915	BS3_CMN_PROTO_STUB(void, Bs3SlabInit,(PBS3SLABCTL pSlabCtl, size_t cbSlabCtl, uint32_t uFlatSlabPtr,
1916	uint32_t cbSlab, uint16_t cbChunk));
1917
1918	/**
1919	* Allocates one chunk from a slab.
1920	*
1921	* @returns Pointer to a chunk on success, NULL if we're out of chunks.
1922	* @param pSlabCtl The slab constrol structure to allocate from.
1923	*/
1924	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3SlabAlloc,(PBS3SLABCTL pSlabCtl));
1925
1926	/**
1927	* Allocates one or more chunks rom a slab.
1928	*
1929	* @returns Pointer to the request number of chunks on success, NULL if we're
1930	* out of chunks.
1931	* @param pSlabCtl The slab constrol structure to allocate from.
1932	* @param cChunks The number of contiguous chunks we want.
1933	* @param fFlags Flags, see BS3_SLAB_ALLOC_F_XXX
1934	*/
1935	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3SlabAllocEx,(PBS3SLABCTL pSlabCtl, uint16_t cChunks, uint16_t fFlags));
1936
1937	/**
1938	* Frees one or more chunks from a slab.
1939	*
1940	* @returns Number of chunks actually freed. When correctly used, this will
1941	* match the @a cChunks parameter, of course.
1942	* @param pSlabCtl The slab constrol structure to free from.
1943	* @param uFlatChunkPtr The flat address of the chunks to free.
1944	* @param cChunks The number of contiguous chunks to free.
1945	*/
1946	BS3_CMN_PROTO_STUB(uint16_t, Bs3SlabFree,(PBS3SLABCTL pSlabCtl, uint32_t uFlatChunkPtr, uint16_t cChunks));
1947
1948
1949	/**
1950	* Initializes the given slab list head.
1951	*
1952	* @param pHead The slab list head.
1953	* @param cbChunk The chunk size.
1954	*/
1955	BS3_CMN_PROTO_STUB(void, Bs3SlabListInit,(PBS3SLABHEAD pHead, uint16_t cbChunk));
1956
1957	/**
1958	* Adds an initialized slab control structure to the list.
1959	*
1960	* @param pHead The slab list head to add it to.
1961	* @param pSlabCtl The slab control structure to add.
1962	*/
1963	BS3_CMN_PROTO_STUB(void, Bs3SlabListAdd,(PBS3SLABHEAD pHead, PBS3SLABCTL pSlabCtl));
1964
1965	/**
1966	* Allocates one chunk.
1967	*
1968	* @returns Pointer to a chunk on success, NULL if we're out of chunks.
1969	* @param pHead The slab list to allocate from.
1970	*/
1971	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3SlabListAlloc,(PBS3SLABHEAD pHead));
1972
1973	/**
1974	* Allocates one or more chunks.
1975	*
1976	* @returns Pointer to the request number of chunks on success, NULL if we're
1977	* out of chunks.
1978	* @param pHead The slab list to allocate from.
1979	* @param cChunks The number of contiguous chunks we want.
1980	* @param fFlags Flags, see BS3_SLAB_ALLOC_F_XXX
1981	*/
1982	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3SlabListAllocEx,(PBS3SLABHEAD pHead, uint16_t cChunks, uint16_t fFlags));
1983
1984	/**
1985	* Frees one or more chunks from a slab list.
1986	*
1987	* @param pHead The slab list to allocate from.
1988	* @param pvChunks Pointer to the first chunk to free.
1989	* @param cChunks The number of contiguous chunks to free.
1990	*/
1991	BS3_CMN_PROTO_STUB(void, Bs3SlabListFree,(PBS3SLABHEAD pHead, void BS3_FAR *pvChunks, uint16_t cChunks));
1992
1993	/**
1994	* Allocation addressing constraints.
1995	*/
1996	typedef enum BS3MEMKIND
1997	{
1998	/** Invalid zero type. */
1999	BS3MEMKIND_INVALID = 0,
2000	/** Real mode addressable memory. */
2001	BS3MEMKIND_REAL,
2002	/** Memory addressable using the 16-bit protected mode tiling. */
2003	BS3MEMKIND_TILED,
2004	/** Memory addressable using 32-bit flat addressing. */
2005	BS3MEMKIND_FLAT32,
2006	/** Memory addressable using 64-bit flat addressing. */
2007	BS3MEMKIND_FLAT64,
2008	/** End of valid types. */
2009	BS3MEMKIND_END,
2010	} BS3MEMKIND;
2011
2012	/**
2013	* Allocates low memory.
2014	*
2015	* @returns Pointer to a chunk on success, NULL if we're out of chunks.
2016	* @param enmKind The kind of addressing constraints imposed on the
2017	* allocation.
2018	* @param cb How much to allocate. Must be 4KB or less.
2019	*/
2020	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3MemAlloc,(BS3MEMKIND enmKind, size_t cb));
2021
2022	/**
2023	* Allocates zero'ed memory.
2024	*
2025	* @param enmKind The kind of addressing constraints imposed on the
2026	* allocation.
2027	* @param cb How much to allocate. Must be 4KB or less.
2028	*/
2029	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3MemAllocZ,(BS3MEMKIND enmKind, size_t cb));
2030
2031	/**
2032	* Frees memory.
2033	*
2034	* @returns Pointer to a chunk on success, NULL if we're out of chunks.
2035	* @param pv The memory to free (returned by #Bs3MemAlloc).
2036	* @param cb The size of the allocation.
2037	*/
2038	BS3_CMN_PROTO_STUB(void, Bs3MemFree,(void BS3_FAR *pv, size_t cb));
2039
2040	/**
2041	* Allocates a page with non-present pages on each side.
2042	*
2043	* @returns Pointer to the usable page. NULL on failure. Use
2044	* Bs3MemGuardedTestPageFree to free the allocation.
2045	* @param enmKind The kind of addressing constraints imposed on the
2046	* allocation.
2047	*/
2048	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3MemGuardedTestPageAlloc,(BS3MEMKIND enmKind));
2049
2050	/**
2051	* Allocates a page with pages on each side to the @a fPte specification.
2052	*
2053	* @returns Pointer to the usable page. NULL on failure. Use
2054	* Bs3MemGuardedTestPageFree to free the allocation.
2055	* @param enmKind The kind of addressing constraints imposed on the
2056	* allocation.
2057	* @param fPte The page table entry specification for the guard pages.
2058	*/
2059	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3MemGuardedTestPageAllocEx,(BS3MEMKIND enmKind, uint64_t fPte));
2060
2061	/**
2062	* Frees guarded page allocated by Bs3MemGuardedTestPageAlloc or
2063	* Bs3MemGuardedTestPageAllocEx.
2064	*
2065	* @param pvGuardedPage Pointer returned by Bs3MemGuardedTestPageAlloc or
2066	* Bs3MemGuardedTestPageAllocEx. NULL is ignored.
2067	*/
2068	BS3_CMN_PROTO_STUB(void, Bs3MemGuardedTestPageFree,(void BS3_FAR *pvGuardedPage));
2069
2070	/** Highes RAM byte below 4G. */
2071	extern uint32_t g_uBs3EndOfRamBelow4G;
2072
2073
2074	/**
2075	* Enables the A20 gate.
2076	*/
2077	BS3_CMN_PROTO_NOSB(void, Bs3A20Enable,(void));
2078
2079	/**
2080	* Enables the A20 gate via the keyboard controller
2081	*/
2082	BS3_CMN_PROTO_NOSB(void, Bs3A20EnableViaKbd,(void));
2083
2084	/**
2085	* Enables the A20 gate via the PS/2 control port A.
2086	*/
2087	BS3_CMN_PROTO_NOSB(void, Bs3A20EnableViaPortA,(void));
2088
2089	/**
2090	* Disables the A20 gate.
2091	*/
2092	BS3_CMN_PROTO_NOSB(void, Bs3A20Disable,(void));
2093
2094	/**
2095	* Disables the A20 gate via the keyboard controller
2096	*/
2097	BS3_CMN_PROTO_NOSB(void, Bs3A20DisableViaKbd,(void));
2098
2099	/**
2100	* Disables the A20 gate via the PS/2 control port A.
2101	*/
2102	BS3_CMN_PROTO_NOSB(void, Bs3A20DisableViaPortA,(void));
2103
2104
2105	/**
2106	* Initializes root page tables for page protected mode (PP16, PP32).
2107	*
2108	* @returns IPRT status code.
2109	* @remarks Must not be called in real-mode!
2110	*/
2111	BS3_CMN_PROTO_STUB(int, Bs3PagingInitRootForPP,(void));
2112
2113	/**
2114	* Initializes root page tables for PAE page protected mode (PAE16, PAE32).
2115	*
2116	* @returns IPRT status code.
2117	* @remarks The default long mode page tables depends on the PAE ones.
2118	* @remarks Must not be called in real-mode!
2119	*/
2120	BS3_CMN_PROTO_STUB(int, Bs3PagingInitRootForPAE,(void));
2121
2122	/**
2123	* Initializes root page tables for long mode (LM16, LM32, LM64).
2124	*
2125	* @returns IPRT status code.
2126	* @remarks The default long mode page tables depends on the PAE ones.
2127	* @remarks Must not be called in real-mode!
2128	*/
2129	BS3_CMN_PROTO_STUB(int, Bs3PagingInitRootForLM,(void));
2130
2131	/**
2132	* Modifies the page table protection of an address range.
2133	*
2134	* This only works on the lowest level of the page tables in the current mode.
2135	*
2136	* Since we generally use the largest pages available when setting up the
2137	* initial page tables, this function will usually have to allocate and create
2138	* more tables. This may fail if we're low on memory.
2139	*
2140	* @returns IPRT status code.
2141	* @param uFlat The flat address of the first page in the range (rounded
2142	* down nearest page boundrary).
2143	* @param cb The range size from @a pv (rounded up to nearest page boundrary).
2144	* @param fSet Mask of zero or more X86_PTE_XXX values to set for the range.
2145	* @param fClear Mask of zero or more X86_PTE_XXX values to clear for the range.
2146	*/
2147	BS3_CMN_PROTO_STUB(int, Bs3PagingProtect,(uint64_t uFlat, uint64_t cb, uint64_t fSet, uint64_t fClear));
2148
2149	/**
2150	* Modifies the page table protection of an address range.
2151	*
2152	* This only works on the lowest level of the page tables in the current mode.
2153	*
2154	* Since we generally use the largest pages available when setting up the
2155	* initial page tables, this function will usually have to allocate and create
2156	* more tables. This may fail if we're low on memory.
2157	*
2158	* @returns IPRT status code.
2159	* @param pv The address of the first page in the range (rounded
2160	* down nearest page boundrary).
2161	* @param cb The range size from @a pv (rounded up to nearest page boundrary).
2162	* @param fSet Mask of zero or more X86_PTE_XXX values to set for the range.
2163	* @param fClear Mask of zero or more X86_PTE_XXX values to clear for the range.
2164	*/
2165	BS3_CMN_PROTO_STUB(int, Bs3PagingProtectPtr,(void BS3_FAR *pv, size_t cb, uint64_t fSet, uint64_t fClear));
2166
2167	/**
2168	* Aliases (maps) one or more contiguous physical pages to a virtual range.
2169	*
2170	* @returns VBox status code.
2171	* @retval VERR_INVALID_PARAMETER if we're in legacy paging mode and @a uDst or
2172	* @a uPhysToAlias are not compatible with legacy paging.
2173	* @retval VERR_OUT_OF_RANGE if we cannot traverse the page tables in this mode
2174	* (typically real mode or v86, maybe 16-bit PE).
2175	* @retval VERR_NO_MEMORY if we cannot allocate page tables for splitting up
2176	* the necessary large pages. No aliasing was performed.
2177	*
2178	* @param uDst The virtual address to map it at. Rounded down
2179	* to the nearest page (@a cbHowMuch is adjusted
2180	* up).
2181	* @param uPhysToAlias The physical address of the first page in the
2182	* (contiguous) range to map. Chopped down to
2183	* nearest page boundrary (@a cbHowMuch is not
2184	* adjusted).
2185	* @param cbHowMuch How much to map. Rounded up to nearest page.
2186	* @param fPte The PTE flags.
2187	*/
2188	BS3_CMN_PROTO_STUB(int, Bs3PagingAlias,(uint64_t uDst, uint64_t uPhysToAlias, uint32_t cbHowMuch, uint64_t fPte));
2189
2190	/**
2191	* Unaliases memory, i.e. restores the 1:1 mapping.
2192	*
2193	* @returns VBox status code. Cannot fail if @a uDst and @a cbHowMuch specify
2194	* the range of a successful Bs3PagingAlias call, however it may run
2195	* out of memory if it's breaking new ground.
2196	*
2197	* @param uDst The virtual address to restore to 1:1 mapping.
2198	* Rounded down to the nearest page (@a cbHowMuch
2199	* is adjusted up).
2200	* @param cbHowMuch How much to restore. Rounded up to nearest page.
2201	*/
2202	BS3_CMN_PROTO_STUB(int, Bs3PagingUnalias,(uint64_t uDst, uint32_t cbHowMuch));
2203
2204
2205	/** The physical / flat address of the buffer backing the canonical traps.
2206	* This buffer is spread equally on each side of the 64-bit non-canonical
2207	* address divide. Non-64-bit code can use this to setup trick shots and
2208	* inspect their results. */
2209	extern uint32_t g_uBs3PagingCanonicalTrapsAddr;
2210	/** The size of the buffer at g_uPagingCanonicalTraps (both sides). */
2211	extern uint16_t g_cbBs3PagingCanonicalTraps;
2212	/** The size of one trap buffer (low or high).
2213	* This is g_cbBs3PagingCanonicalTraps divided by two. */
2214	extern uint16_t g_cbBs3PagingOneCanonicalTrap;
2215
2216	/**
2217	* Sets up the 64-bit canonical address space trap buffers, if neceessary.
2218	*
2219	* @returns Pointer to the buffers (i.e. the first page of the low one) on
2220	* success. NULL on failure.
2221	*/
2222	BS3_CMN_PROTO_STUB(void BS3_FAR *, Bs3PagingSetupCanonicalTraps,(void));
2223
2224	/**
2225	* Waits for the keyboard controller to become ready.
2226	*/
2227	BS3_CMN_PROTO_NOSB(void, Bs3KbdWait,(void));
2228
2229	/**
2230	* Sends a read command to the keyboard controller and gets the result.
2231	*
2232	* The caller is responsible for making sure the keyboard controller is ready
2233	* for a command (call #Bs3KbdWait if unsure).
2234	*
2235	* @returns The value read is returned (in al).
2236	* @param bCmd The read command.
2237	*/
2238	BS3_CMN_PROTO_NOSB(uint8_t, Bs3KbdRead,(uint8_t bCmd));
2239
2240	/**
2241	* Sends a write command to the keyboard controller and then sends the data.
2242	*
2243	* The caller is responsible for making sure the keyboard controller is ready
2244	* for a command (call #Bs3KbdWait if unsure).
2245	*
2246	* @param bCmd The write command.
2247	* @param bData The data to write.
2248	*/
2249	BS3_CMN_PROTO_NOSB(void, Bs3KbdWrite,(uint8_t bCmd, uint8_t bData));
2250
2251
2252	/**
2253	* Configures the PIC, once only.
2254	*
2255	* Subsequent calls to this function will not do anything.
2256	*
2257	* The PIC will be programmed to use IDT/IVT vectors 0x70 thru 0x7f, auto
2258	* end-of-interrupt, and all IRQs masked. The individual PIC users will have to
2259	* use #Bs3PicUpdateMask unmask their IRQ once they've got all the handlers
2260	* installed.
2261	*/
2262	BS3_CMN_PROTO_STUB(void, Bs3PicSetup,(void));
2263
2264	/**
2265	* Updates the PIC masks.
2266	*
2267	* @returns The new mask - master in low, slave in high byte.
2268	* @param fAndMask Things to keep as-is. Master in low, slave in high byte.
2269	* @param fOrMask Things to start masking. Ditto wrt bytes.
2270	*/
2271	BS3_CMN_PROTO_STUB(uint16_t, Bs3PicUpdateMask,(uint16_t fAndMask, uint16_t fOrMask));
2272
2273	/**
2274	* Disables all IRQs on the PIC.
2275	*/
2276	BS3_CMN_PROTO_STUB(void, Bs3PicMaskAll,(void));
2277
2278
2279	/**
2280	* Sets up the PIT for periodic callback.
2281	*
2282	* @param cHzDesired The desired Hz. Zero means max interval length
2283	* (18.2Hz). Plase check the various PIT globals for
2284	* the actual interval length.
2285	*/
2286	BS3_CMN_PROTO_STUB(void, Bs3PitSetupAndEnablePeriodTimer,(uint16_t cHzDesired));
2287
2288	/**
2289	* Disables the PIT if active.
2290	*/
2291	BS3_CMN_PROTO_STUB(void, Bs3PitDisable,(void));
2292
2293	/** Nano seconds (approx) since last the PIT timer was started. */
2294	extern uint64_t volatile g_cBs3PitNs;
2295	/** Milliseconds seconds (very approx) since last the PIT timer was started. */
2296	extern uint64_t volatile g_cBs3PitMs;
2297	/** Number of ticks since last the PIT timer was started. */
2298	extern uint32_t volatile g_cBs3PitTicks;
2299	/** The current interval in nanon seconds. */
2300	extern uint32_t g_cBs3PitIntervalNs;
2301	/** The current interval in milliseconds (approximately).
2302	* This is 0 if not yet started (used for checking the state internally). */
2303	extern uint16_t volatile g_cBs3PitIntervalMs;
2304	/** The current PIT frequency (approximately). 0 if not yet started. */
2305	extern uint16_t g_cBs3PitIntervalHz;
2306
2307
2308	/**
2309	* Call 16-bit prot mode function from v8086 mode.
2310	*
2311	* This switches from v8086 mode to 16-bit protected mode (code) and executed
2312	* @a fpfnCall with @a cbParams bytes of parameters pushed on the stack.
2313	* Afterwards it switches back to v8086 mode and returns a 16-bit status code.
2314	*
2315	* @returns 16-bit status code if the function returned anything.
2316	* @param fpfnCall Far real mode pointer to the function to call.
2317	* @param cbParams The size of the parameter list, in bytes.
2318	* @param ... The parameters.
2319	*/
2320	BS3_CMN_PROTO_STUB(int, Bs3SwitchFromV86To16BitAndCallC,(FPFNBS3FAR fpfnCall, unsigned cbParams, ...));
2321
2322
2323	/**
2324	* BS3 integer register.
2325	*/
2326	typedef union BS3REG
2327	{
2328	/** 8-bit unsigned integer. */
2329	uint8_t u8;
2330	/** 16-bit unsigned integer. */
2331	uint16_t u16;
2332	/** 32-bit unsigned integer. */
2333	uint32_t u32;
2334	/** 64-bit unsigned integer. */
2335	uint64_t u64;
2336	/** Full unsigned integer. */
2337	uint64_t u;
2338	/** High/low byte view. */
2339	struct
2340	{
2341	uint8_t bLo;
2342	uint8_t bHi;
2343	} b;
2344	/** 8-bit view. */
2345	uint8_t au8[8];
2346	/** 16-bit view. */
2347	uint16_t au16[4];
2348	/** 32-bit view. */
2349	uint32_t au32[2];
2350	} BS3REG;
2351	/** Pointer to an integer register. */
2352	typedef BS3REG BS3_FAR *PBS3REG;
2353	/** Pointer to a const integer register. */
2354	typedef BS3REG const BS3_FAR *PCBS3REG;
2355
2356	/**
2357	* Register context (without FPU).
2358	*/
2359	typedef struct BS3REGCTX
2360	{
2361	BS3REG rax; /*< 0x00 /
2362	BS3REG rcx; /*< 0x08 /
2363	BS3REG rdx; /*< 0x10 /
2364	BS3REG rbx; /*< 0x18 /
2365	BS3REG rsp; /*< 0x20 /
2366	BS3REG rbp; /*< 0x28 /
2367	BS3REG rsi; /*< 0x30 /
2368	BS3REG rdi; /*< 0x38 /
2369	BS3REG r8; /*< 0x40 /
2370	BS3REG r9; /*< 0x48 /
2371	BS3REG r10; /*< 0x50 /
2372	BS3REG r11; /*< 0x58 /
2373	BS3REG r12; /*< 0x60 /
2374	BS3REG r13; /*< 0x68 /
2375	BS3REG r14; /*< 0x70 /
2376	BS3REG r15; /*< 0x78 /
2377	BS3REG rflags; /*< 0x80 /
2378	BS3REG rip; /*< 0x88 /
2379	uint16_t cs; /*< 0x90 /
2380	uint16_t ds; /*< 0x92 /
2381	uint16_t es; /*< 0x94 /
2382	uint16_t fs; /*< 0x96 /
2383	uint16_t gs; /*< 0x98 /
2384	uint16_t ss; /*< 0x9a /
2385	uint16_t tr; /*< 0x9c /
2386	uint16_t ldtr; /*< 0x9e /
2387	uint8_t bMode; /*< 0xa0: BS3_MODE_XXX. /
2388	uint8_t bCpl; /*< 0xa1: 0-3, 0 is used for real mode. /
2389	uint8_t fbFlags; /*< 0xa2: BS3REG_CTX_F_XXX /
2390	uint8_t abPadding[5]; /*< 0xa3 /
2391	BS3REG cr0; /*< 0xa8 /
2392	BS3REG cr2; /*< 0xb0 /
2393	BS3REG cr3; /*< 0xb8 /
2394	BS3REG cr4; /*< 0xc0 /
2395	uint64_t uUnused; /*< 0xc8 /
2396	} BS3REGCTX;
2397	AssertCompileSize(BS3REGCTX, 0xd0);
2398	/** Pointer to a register context. */
2399	typedef BS3REGCTX BS3_FAR *PBS3REGCTX;
2400	/** Pointer to a const register context. */
2401	typedef BS3REGCTX const BS3_FAR *PCBS3REGCTX;
2402
2403	/** @name BS3REG_CTX_F_XXX - BS3REGCTX::fbFlags masks.
2404	* @{ */
2405	/** The CR0 is MSW (only low 16-bit). */
2406	#define BS3REG_CTX_F_NO_CR0_IS_MSW UINT8_C(0x01)
2407	/** No CR2 and CR3 values. Not in CPL 0 or CPU too old for CR2 & CR3. */
2408	#define BS3REG_CTX_F_NO_CR2_CR3 UINT8_C(0x02)
2409	/** No CR4 value. The CPU is too old for CR4. */
2410	#define BS3REG_CTX_F_NO_CR4 UINT8_C(0x04)
2411	/** No TR and LDTR values. Context gathered in real mode or v8086 mode. */
2412	#define BS3REG_CTX_F_NO_TR_LDTR UINT8_C(0x08)
2413	/** The context doesn't have valid values for AMD64 GPR extensions. */
2414	#define BS3REG_CTX_F_NO_AMD64 UINT8_C(0x10)
2415	/** @} */
2416
2417	/**
2418	* Saves the current register context.
2419	*
2420	* @param pRegCtx Where to store the register context.
2421	*/
2422	BS3_CMN_PROTO_NOSB(void, Bs3RegCtxSave,(PBS3REGCTX pRegCtx));
2423
2424	/**
2425	* Switch to the specified CPU bitcount, reserve additional stack and save the
2426	* CPU context.
2427	*
2428	* This is for writing more flexible test drivers that can test more than the
2429	* CPU bitcount (16-bit, 32-bit, 64-bit, and virtual 8086) of the driver itself.
2430	* For instance a 32-bit driver can do V86 and 16-bit testing, thus saving more
2431	* precious and problematic 16-bit code.
2432	*
2433	* @param pRegCtx Where to store the register context.
2434	* @param bBitMode Bit mode to switch to, BS3_MODE_CODE_XXX. Only
2435	* BS3_MODE_CODE_MASK is used, other bits are ignored
2436	* to make it possible to pass a full mode value.
2437	* @param cbExtraStack Number of bytes of additional stack to allocate.
2438	*/
2439	BS3_CMN_PROTO_FARSTUB(8, void, Bs3RegCtxSaveEx,(PBS3REGCTX pRegCtx, uint8_t bBitMode, uint16_t cbExtraStack));
2440
2441	/**
2442	* Transforms a register context to a different ring.
2443	*
2444	* @param pRegCtx The register context.
2445	* @param bRing The target ring (0..3).
2446	*/
2447	BS3_CMN_PROTO_STUB(void, Bs3RegCtxConvertToRingX,(PBS3REGCTX pRegCtx, uint8_t bRing));
2448
2449	/**
2450	* Restores a register context.
2451	*
2452	* @param pRegCtx The register context to be restored and resumed.
2453	* @param fFlags BS3REGCTXRESTORE_F_XXX.
2454	*
2455	* @remarks Will switch to ring-0.
2456	* @remarks Does not return.
2457	*/
2458	BS3_CMN_PROTO_NOSB(DECL_NO_RETURN(void), Bs3RegCtxRestore,(PCBS3REGCTX pRegCtx, uint16_t fFlags));
2459	#if !defined(BS3_KIT_WITH_NO_RETURN) && defined(__WATCOMC__)
2460	# pragma aux Bs3RegCtxRestore_c16 "_Bs3RegCtxRestore_aborts_c16" __aborts
2461	# pragma aux Bs3RegCtxRestore_f16 "_Bs3RegCtxRestore_aborts_f16" __aborts
2462	# pragma aux Bs3RegCtxRestore_c32 "_Bs3RegCtxRestore_aborts_c32" __aborts
2463	#endif
2464
2465	/** Skip restoring the CRx registers. */
2466	#define BS3REGCTXRESTORE_F_SKIP_CRX UINT16_C(0x0001)
2467
2468	/**
2469	* Prints the register context.
2470	*
2471	* @param pRegCtx The register context to be printed.
2472	*/
2473	BS3_CMN_PROTO_STUB(void, Bs3RegCtxPrint,(PCBS3REGCTX pRegCtx));
2474
2475	/**
2476	* Sets a GPR and segment register to point at the same location as @a uFlat.
2477	*
2478	* @param pRegCtx The register context.
2479	* @param pGpr The general purpose register to set (points within
2480	* @a pRegCtx).
2481	* @param pSel The selector register (points within @a pRegCtx).
2482	* @param uFlat Flat location address.
2483	*/
2484	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetGrpSegFromFlat,(PBS3REGCTX pRegCtx, PBS3REG pGpr, PRTSEL pSel, RTCCUINTXREG uFlat));
2485
2486	/**
2487	* Sets a GPR and segment register to point at the same location as @a ovPtr.
2488	*
2489	* @param pRegCtx The register context.
2490	* @param pGpr The general purpose register to set (points within
2491	* @a pRegCtx).
2492	* @param pSel The selector register (points within @a pRegCtx).
2493	* @param pvPtr Current context pointer.
2494	*/
2495	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetGrpSegFromCurPtr,(PBS3REGCTX pRegCtx, PBS3REG pGpr, PRTSEL pSel, void BS3_FAR *pvPtr));
2496
2497	/**
2498	* Sets a GPR and DS to point at the same location as @a ovPtr.
2499	*
2500	* @param pRegCtx The register context.
2501	* @param pGpr The general purpose register to set (points within
2502	* @a pRegCtx).
2503	* @param pvPtr Current context pointer.
2504	*/
2505	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetGrpDsFromCurPtr,(PBS3REGCTX pRegCtx, PBS3REG pGpr, void BS3_FAR *pvPtr));
2506
2507	/**
2508	* Sets CS:RIP to point at the same piece of code as @a uFlatCode.
2509	*
2510	* @param pRegCtx The register context.
2511	* @param uFlatCode Flat code pointer
2512	* @sa Bs3RegCtxSetRipCsFromLnkPtr, Bs3RegCtxSetRipCsFromCurPtr
2513	*/
2514	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetRipCsFromFlat,(PBS3REGCTX pRegCtx, RTCCUINTXREG uFlatCode));
2515
2516	/**
2517	* Sets CS:RIP to point at the same piece of code as @a pfnCode.
2518	*
2519	* The 16-bit edition of this function expects a far 16:16 address as written by
2520	* the linker (i.e. real mode).
2521	*
2522	* @param pRegCtx The register context.
2523	* @param pfnCode Pointer to the code. In 32-bit and 64-bit mode this is a
2524	* flat address, while in 16-bit it's a far 16:16 address
2525	* as fixed up by the linker (real mode selector). This
2526	* address is converted to match the mode of the context.
2527	* @sa Bs3RegCtxSetRipCsFromCurPtr, Bs3RegCtxSetRipCsFromFlat
2528	*/
2529	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetRipCsFromLnkPtr,(PBS3REGCTX pRegCtx, FPFNBS3FAR pfnCode));
2530
2531	/**
2532	* Sets CS:RIP to point at the same piece of code as @a pfnCode.
2533	*
2534	* @param pRegCtx The register context.
2535	* @param pfnCode Pointer to the code. Current mode pointer.
2536	* @sa Bs3RegCtxSetRipCsFromLnkPtr, Bs3RegCtxSetRipCsFromFlat
2537	*/
2538	BS3_CMN_PROTO_STUB(void, Bs3RegCtxSetRipCsFromCurPtr,(PBS3REGCTX pRegCtx, FPFNBS3FAR pfnCode));
2539
2540
2541	/**
2542	* Trap frame.
2543	*/
2544	typedef struct BS3TRAPFRAME
2545	{
2546	/** 0x00: Exception/interrupt number. */
2547	uint8_t bXcpt;
2548	/** 0x01: The size of the IRET frame. */
2549	uint8_t cbIretFrame;
2550	/** 0x02: The handler CS. */
2551	uint16_t uHandlerCs;
2552	/** 0x04: The handler SS. */
2553	uint16_t uHandlerSs;
2554	/** 0x06: Explicit alignment. */
2555	uint16_t usAlignment;
2556	/** 0x08: The handler RSP (pointer to the iret frame, skipping ErrCd). */
2557	uint64_t uHandlerRsp;
2558	/** 0x10: The handler RFLAGS value. */
2559	uint64_t fHandlerRfl;
2560	/** 0x18: The error code (if applicable). */
2561	uint64_t uErrCd;
2562	/** 0x20: The register context. */
2563	BS3REGCTX Ctx;
2564	} BS3TRAPFRAME;
2565	AssertCompileSize(BS3TRAPFRAME, 0x20 + 0xd0);
2566	/** Pointer to a trap frame. */
2567	typedef BS3TRAPFRAME BS3_FAR *PBS3TRAPFRAME;
2568	/** Pointer to a const trap frame. */
2569	typedef BS3TRAPFRAME const BS3_FAR *PCBS3TRAPFRAME;
2570
2571
2572	/**
2573	* Re-initializes the trap handling for the current mode.
2574	*
2575	* Useful after a test that messes with the IDT/IVT.
2576	*
2577	* @sa Bs3TrapInit
2578	*/
2579	BS3_CMN_PROTO_STUB(void, Bs3TrapReInit,(void));
2580
2581	/**
2582	* Initializes real mode and v8086 trap handling.
2583	*
2584	* @remarks Does not install RM/V86 trap handling, just initializes the
2585	* structures.
2586	*/
2587	BS3_CMN_PROTO_STUB(void, Bs3TrapRmV86Init,(void));
2588
2589	/**
2590	* Initializes real mode and v8086 trap handling, extended version.
2591	*
2592	* @param f386Plus Set if the CPU is 80386 or later and
2593	* extended registers should be saved. Once initialized
2594	* with this parameter set to @a true, the effect cannot be
2595	* reversed.
2596	*
2597	* @remarks Does not install RM/V86 trap handling, just initializes the
2598	* structures.
2599	*/
2600	BS3_CMN_PROTO_STUB(void, Bs3TrapRmV86InitEx,(bool f386Plus));
2601
2602	/**
2603	* Initializes 16-bit (protected mode) trap handling.
2604	*
2605	* @remarks Does not install 16-bit trap handling, just initializes the
2606	* structures.
2607	*/
2608	BS3_CMN_PROTO_STUB(void, Bs3Trap16Init,(void));
2609
2610	/**
2611	* Initializes 16-bit (protected mode) trap handling, extended version.
2612	*
2613	* @param f386Plus Set if the CPU is 80386 or later and
2614	* extended registers should be saved. Once initialized
2615	* with this parameter set to @a true, the effect cannot be
2616	* reversed.
2617	*
2618	* @remarks Does not install 16-bit trap handling, just initializes the
2619	* structures.
2620	*/
2621	BS3_CMN_PROTO_STUB(void, Bs3Trap16InitEx,(bool f386Plus));
2622
2623	/**
2624	* Initializes 32-bit trap handling.
2625	*
2626	* @remarks Does not install 32-bit trap handling, just initializes the
2627	* structures.
2628	*/
2629	BS3_CMN_PROTO_STUB(void, Bs3Trap32Init,(void));
2630
2631	/**
2632	* Initializes 64-bit trap handling
2633	*
2634	* @remarks Does not install 64-bit trap handling, just initializes the
2635	* structures.
2636	*/
2637	BS3_CMN_PROTO_STUB(void, Bs3Trap64Init,(void));
2638
2639	/**
2640	* Modifies the real-mode / V86 IVT entry specified by @a iIvt.
2641	*
2642	* @param iIvt The index of the IDT entry to set.
2643	* @param uSeg The handler real-mode segment.
2644	* @param off The handler offset.
2645	*/
2646	BS3_CMN_PROTO_STUB(void, Bs3TrapRmV86SetGate,(uint8_t iIvt, uint16_t uSeg, uint16_t off));
2647
2648	/**
2649	* Modifies the 16-bit IDT entry (protected mode) specified by @a iIdt.
2650	*
2651	* @param iIdt The index of the IDT entry to set.
2652	* @param bType The gate type (X86_SEL_TYPE_SYS_XXX).
2653	* @param bDpl The DPL.
2654	* @param uSel The handler selector.
2655	* @param off The handler offset (if applicable).
2656	* @param cParams The parameter count (for call gates).
2657	*/
2658	BS3_CMN_PROTO_STUB(void, Bs3Trap16SetGate,(uint8_t iIdt, uint8_t bType, uint8_t bDpl,
2659	uint16_t uSel, uint16_t off, uint8_t cParams));
2660
2661	/** The address of Bs3Trap16GenericEntries.
2662	* Bs3Trap16GenericEntries is an array of interrupt/trap/whatever entry
2663	* points, 8 bytes each, that will create a register frame and call the generic
2664	* C compatible trap handlers. */
2665	extern uint32_t g_Bs3Trap16GenericEntriesFlatAddr;
2666
2667	/**
2668	* Modifies the 32-bit IDT entry specified by @a iIdt.
2669	*
2670	* @param iIdt The index of the IDT entry to set.
2671	* @param bType The gate type (X86_SEL_TYPE_SYS_XXX).
2672	* @param bDpl The DPL.
2673	* @param uSel The handler selector.
2674	* @param off The handler offset (if applicable).
2675	* @param cParams The parameter count (for call gates).
2676	*/
2677	BS3_CMN_PROTO_STUB(void, Bs3Trap32SetGate,(uint8_t iIdt, uint8_t bType, uint8_t bDpl,
2678	uint16_t uSel, uint32_t off, uint8_t cParams));
2679
2680	/** The address of Bs3Trap32GenericEntries.
2681	* Bs3Trap32GenericEntries is an array of interrupt/trap/whatever entry
2682	* points, 10 bytes each, that will create a register frame and call the generic
2683	* C compatible trap handlers. */
2684	extern uint32_t g_Bs3Trap32GenericEntriesFlatAddr;
2685
2686	/**
2687	* Modifies the 64-bit IDT entry specified by @a iIdt.
2688	*
2689	* @param iIdt The index of the IDT entry to set.
2690	* @param bType The gate type (X86_SEL_TYPE_SYS_XXX).
2691	* @param bDpl The DPL.
2692	* @param uSel The handler selector.
2693	* @param off The handler offset (if applicable).
2694	* @param bIst The interrupt stack to use.
2695	*/
2696	BS3_CMN_PROTO_STUB(void, Bs3Trap64SetGate,(uint8_t iIdt, uint8_t bType, uint8_t bDpl, uint16_t uSel, uint64_t off, uint8_t bIst));
2697
2698	/** The address of Bs3Trap64GenericEntries.
2699	* Bs3Trap64GenericEntries is an array of interrupt/trap/whatever entry
2700	* points, 8 bytes each, that will create a register frame and call the generic
2701	* C compatible trap handlers. */
2702	extern uint32_t g_Bs3Trap64GenericEntriesFlatAddr;
2703
2704	/**
2705	* C-style trap handler.
2706	*
2707	* The caller will resume the context in @a pTrapFrame upon return.
2708	*
2709	* @param pTrapFrame The trap frame. Registers can be modified.
2710	* @note The 16-bit versions must be in CGROUP16!
2711	*/
2712	typedef BS3_DECL_NEAR_CALLBACK(void) FNBS3TRAPHANDLER(PBS3TRAPFRAME pTrapFrame);
2713	/** Pointer to a trap handler (current template context). */
2714	typedef FNBS3TRAPHANDLER *PFNBS3TRAPHANDLER;
2715
2716	#if ARCH_BITS == 16
2717	/** @copydoc FNBS3TRAPHANDLER */
2718	typedef FNBS3FAR FNBS3TRAPHANDLER32;
2719	/** @copydoc FNBS3TRAPHANDLER */
2720	typedef FNBS3FAR FNBS3TRAPHANDLER64;
2721	#else
2722	/** @copydoc FNBS3TRAPHANDLER */
2723	typedef FNBS3TRAPHANDLER FNBS3TRAPHANDLER32;
2724	/** @copydoc FNBS3TRAPHANDLER */
2725	typedef FNBS3TRAPHANDLER FNBS3TRAPHANDLER64;
2726	#endif
2727	/** @copydoc PFNBS3TRAPHANDLER */
2728	typedef FNBS3TRAPHANDLER32 *PFNBS3TRAPHANDLER32;
2729	/** @copydoc PFNBS3TRAPHANDLER */
2730	typedef FNBS3TRAPHANDLER64 *PFNBS3TRAPHANDLER64;
2731
2732
2733	/**
2734	* C-style trap handler, near 16-bit (CGROUP16).
2735	*
2736	* The caller will resume the context in @a pTrapFrame upon return.
2737	*
2738	* @param pTrapFrame The trap frame. Registers can be modified.
2739	*/
2740	typedef BS3_DECL_NEAR_CALLBACK(void) FNBS3TRAPHANDLER16(PBS3TRAPFRAME pTrapFrame);
2741	/** Pointer to a trap handler (current template context). */
2742	typedef FNBS3TRAPHANDLER16 *PFNBS3TRAPHANDLER16;
2743
2744	/**
2745	* C-style trap handler, near 16-bit (CGROUP16).
2746	*
2747	* The caller will resume the context in @a pTrapFrame upon return.
2748	*
2749	* @param pTrapFrame The trap frame. Registers can be modified.
2750	*/
2751	typedef BS3_DECL_CALLBACK(void) FNBS3TRAPHANDLER3264(PBS3TRAPFRAME pTrapFrame);
2752	/** Pointer to a trap handler (current template context). */
2753	typedef FNBS3TRAPHANDLER3264 *FPFNBS3TRAPHANDLER3264;
2754
2755
2756	/**
2757	* Sets a trap handler (C/C++/assembly) for the current bitcount.
2758	*
2759	* @returns Previous handler.
2760	* @param iIdt The index of the IDT entry to set.
2761	* @param pfnHandler Pointer to the handler.
2762	* @sa Bs3TrapSetHandlerEx
2763	*/
2764	BS3_CMN_PROTO_STUB(PFNBS3TRAPHANDLER, Bs3TrapSetHandler,(uint8_t iIdt, PFNBS3TRAPHANDLER pfnHandler));
2765
2766	/**
2767	* Sets a trap handler (C/C++/assembly) for all the bitcounts.
2768	*
2769	* @param iIdt The index of the IDT and IVT entry to set.
2770	* @param pfnHandler16 Pointer to the 16-bit handler. (Assumes linker addresses.)
2771	* @param pfnHandler32 Pointer to the 32-bit handler. (Assumes linker addresses.)
2772	* @param pfnHandler64 Pointer to the 64-bit handler. (Assumes linker addresses.)
2773	* @sa Bs3TrapSetHandler
2774	*/
2775	BS3_CMN_PROTO_STUB(void, Bs3TrapSetHandlerEx,(uint8_t iIdt, PFNBS3TRAPHANDLER16 pfnHandler16,
2776	PFNBS3TRAPHANDLER32 pfnHandler32, PFNBS3TRAPHANDLER64 pfnHandler64));
2777
2778	/**
2779	* Default C/C++ trap handler.
2780	*
2781	* This will check trap record and panic if no match was found.
2782	*
2783	* @param pTrapFrame Trap frame of the trap to handle.
2784	*/
2785	BS3_CMN_PROTO_STUB(void, Bs3TrapDefaultHandler,(PBS3TRAPFRAME pTrapFrame));
2786
2787	/**
2788	* Prints the trap frame (to screen).
2789	* @param pTrapFrame Trap frame to print.
2790	*/
2791	BS3_CMN_PROTO_STUB(void, Bs3TrapPrintFrame,(PCBS3TRAPFRAME pTrapFrame));
2792
2793	/**
2794	* Sets up a long jump from a trap handler.
2795	*
2796	* The long jump will only be performed onced, but will catch any kind of trap,
2797	* fault, interrupt or irq.
2798	*
2799	* @retval true on the initial call.
2800	* @retval false on trap return.
2801	* @param pTrapFrame Where to store the trap information when
2802	* returning @c false.
2803	* @sa #Bs3TrapUnsetJmp
2804	*/
2805	BS3_CMN_PROTO_NOSB(DECL_RETURNS_TWICE(bool),Bs3TrapSetJmp,(PBS3TRAPFRAME pTrapFrame));
2806
2807	/**
2808	* Combination of #Bs3TrapSetJmp and #Bs3RegCtxRestore.
2809	*
2810	* @param pCtxRestore The context to restore.
2811	* @param pTrapFrame Where to store the trap information.
2812	*/
2813	BS3_CMN_PROTO_STUB(void, Bs3TrapSetJmpAndRestore,(PCBS3REGCTX pCtxRestore, PBS3TRAPFRAME pTrapFrame));
2814
2815	/**
2816	* Disables a previous #Bs3TrapSetJmp call.
2817	*/
2818	BS3_CMN_PROTO_STUB(void, Bs3TrapUnsetJmp,(void));
2819
2820
2821	/**
2822	* The current test step.
2823	*/
2824	extern uint16_t g_usBs3TestStep;
2825
2826	/**
2827	* Equivalent to RTTestCreate + RTTestBanner.
2828	*
2829	* @param pszTest The test name.
2830	*/
2831	BS3_CMN_PROTO_STUB(void, Bs3TestInit,(const char BS3_FAR *pszTest));
2832
2833
2834	/**
2835	* Equivalent to RTTestSummaryAndDestroy.
2836	*/
2837	BS3_CMN_PROTO_STUB(void, Bs3TestTerm,(void));
2838
2839	/**
2840	* Equivalent to RTTestISub.
2841	*/
2842	BS3_CMN_PROTO_STUB(void, Bs3TestSub,(const char BS3_FAR *pszSubTest));
2843
2844	/**
2845	* Equivalent to RTTestIFailedF.
2846	*/
2847	BS3_CMN_PROTO_STUB(void, Bs3TestSubF,(const char BS3_FAR *pszFormat, ...));
2848
2849	/**
2850	* Equivalent to RTTestISubV.
2851	*/
2852	BS3_CMN_PROTO_STUB(void, Bs3TestSubV,(const char BS3_FAR *pszFormat, va_list va));
2853
2854	/**
2855	* Equivalent to RTTestISubDone.
2856	*/
2857	BS3_CMN_PROTO_STUB(void, Bs3TestSubDone,(void));
2858
2859	/**
2860	* Equivalent to RTTestSubErrorCount.
2861	*/
2862	BS3_CMN_PROTO_STUB(uint16_t, Bs3TestSubErrorCount,(void));
2863
2864	/**
2865	* Equivalent to RTTestIPrintf with RTTESTLVL_ALWAYS.
2866	*
2867	* @param pszFormat What to print, format string. Explicit newline char.
2868	* @param ... String format arguments.
2869	*/
2870	BS3_CMN_PROTO_STUB(void, Bs3TestPrintf,(const char BS3_FAR *pszFormat, ...));
2871
2872	/**
2873	* Equivalent to RTTestIPrintfV with RTTESTLVL_ALWAYS.
2874	*
2875	* @param pszFormat What to print, format string. Explicit newline char.
2876	* @param va String format arguments.
2877	*/
2878	BS3_CMN_PROTO_STUB(void, Bs3TestPrintfV,(const char BS3_FAR *pszFormat, va_list va));
2879
2880	/**
2881	* Equivalent to RTTestIFailed.
2882	*/
2883	BS3_CMN_PROTO_STUB(void, Bs3TestFailed,(const char BS3_FAR *pszMessage));
2884
2885	/**
2886	* Equivalent to RTTestIFailedF.
2887	*/
2888	BS3_CMN_PROTO_STUB(void, Bs3TestFailedF,(const char BS3_FAR *pszFormat, ...));
2889
2890	/**
2891	* Equivalent to RTTestIFailedV.
2892	*/
2893	BS3_CMN_PROTO_STUB(void, Bs3TestFailedV,(const char BS3_FAR *pszFormat, va_list va));
2894
2895	/**
2896	* Equivalent to RTTestISkipped.
2897	*
2898	* @param pszWhy Optional reason why it's being skipped.
2899	*/
2900	BS3_CMN_PROTO_STUB(void, Bs3TestSkipped,(const char BS3_FAR *pszWhy));
2901
2902	/**
2903	* Equivalent to RTTestISkippedF.
2904	*
2905	* @param pszFormat Optional reason why it's being skipped.
2906	* @param ... Format arguments.
2907	*/
2908	BS3_CMN_PROTO_STUB(void, Bs3TestSkippedF,(const char BS3_FAR *pszFormat, ...));
2909
2910	/**
2911	* Equivalent to RTTestISkippedV.
2912	*
2913	* @param pszFormat Optional reason why it's being skipped.
2914	* @param va Format arguments.
2915	*/
2916	BS3_CMN_PROTO_STUB(void, Bs3TestSkippedV,(const char BS3_FAR *pszFormat, va_list va));
2917
2918	/**
2919	* Compares two register contexts, with PC and SP adjustments.
2920	*
2921	* Differences will be reported as test failures.
2922	*
2923	* @returns true if equal, false if not.
2924	* @param pActualCtx The actual register context.
2925	* @param pExpectedCtx Expected register context.
2926	* @param cbPcAdjust Program counter adjustment (applied to @a pExpectedCtx).
2927	* @param cbSpAdjust Stack pointer adjustment (applied to @a pExpectedCtx).
2928	* @param fExtraEfl Extra EFLAGS to OR into @a pExepctedCtx.
2929	* @param pszMode CPU mode or some other helpful text.
2930	* @param idTestStep Test step identifier.
2931	*/
2932	BS3_CMN_PROTO_STUB(bool, Bs3TestCheckRegCtxEx,(PCBS3REGCTX pActualCtx, PCBS3REGCTX pExpectedCtx, uint16_t cbPcAdjust,
2933	int16_t cbSpAdjust, uint32_t fExtraEfl, const char *pszMode, uint16_t idTestStep));
2934
2935	/**
2936	* Performs the testing for the given mode.
2937	*
2938	* This is called with the CPU already switch to that mode.
2939	*
2940	* @returns 0 on success or directly Bs3TestFailed calls, non-zero to indicate
2941	* where the test when wrong. Special value BS3TESTDOMODE_SKIPPED
2942	* should be returned to indicate that the test has been skipped.
2943	* @param bMode The current CPU mode.
2944	*/
2945	typedef BS3_DECL_CALLBACK(uint8_t) FNBS3TESTDOMODE(uint8_t bMode);
2946	/** Pointer (far) to a test (for 32-bit and 64-bit code, will be flatten). */
2947	typedef FNBS3TESTDOMODE *PFNBS3TESTDOMODE;
2948
2949	/** Special FNBS3TESTDOMODE return code for indicating a skipped mode test. */
2950	#define BS3TESTDOMODE_SKIPPED UINT8_MAX
2951
2952	/**
2953	* Mode sub-test entry.
2954	*
2955	* This can only be passed around to functions with the same bit count, as it
2956	* contains function pointers. In 16-bit mode, the 16-bit pointers are near and
2957	* implies BS3TEXT16, whereas the 32-bit and 64-bit pointers are far real mode
2958	* addresses that will be converted to flat address prior to calling them.
2959	* Similarly, in 32-bit and 64-bit the addresses are all flat and the 16-bit
2960	* ones will be converted to BS3TEXT16 based addresses prior to calling.
2961	*/
2962	typedef struct BS3TESTMODEENTRY
2963	{
2964	const char * BS3_FAR pszSubTest;
2965
2966	PFNBS3TESTDOMODE pfnDoRM;
2967
2968	PFNBS3TESTDOMODE pfnDoPE16;
2969	PFNBS3TESTDOMODE pfnDoPE16_32;
2970	PFNBS3TESTDOMODE pfnDoPE16_V86;
2971	PFNBS3TESTDOMODE pfnDoPE32;
2972	PFNBS3TESTDOMODE pfnDoPE32_16;
2973	PFNBS3TESTDOMODE pfnDoPEV86;
2974
2975	PFNBS3TESTDOMODE pfnDoPP16;
2976	PFNBS3TESTDOMODE pfnDoPP16_32;
2977	PFNBS3TESTDOMODE pfnDoPP16_V86;
2978	PFNBS3TESTDOMODE pfnDoPP32;
2979	PFNBS3TESTDOMODE pfnDoPP32_16;
2980	PFNBS3TESTDOMODE pfnDoPPV86;
2981
2982	PFNBS3TESTDOMODE pfnDoPAE16;
2983	PFNBS3TESTDOMODE pfnDoPAE16_32;
2984	PFNBS3TESTDOMODE pfnDoPAE16_V86;
2985	PFNBS3TESTDOMODE pfnDoPAE32;
2986	PFNBS3TESTDOMODE pfnDoPAE32_16;
2987	PFNBS3TESTDOMODE pfnDoPAEV86;
2988
2989	PFNBS3TESTDOMODE pfnDoLM16;
2990	PFNBS3TESTDOMODE pfnDoLM32;
2991	PFNBS3TESTDOMODE pfnDoLM64;
2992
2993	} BS3TESTMODEENTRY;
2994	/** Pointer to a mode sub-test entry. */
2995	typedef BS3TESTMODEENTRY const *PCBS3TESTMODEENTRY;
2996
2997	/** @def BS3TESTMODEENTRY_CMN
2998	* Produces a BS3TESTMODEENTRY initializer for common (c16,c32,c64) test
2999	* functions. */
3000	#define BS3TESTMODEENTRY_CMN(a_szTest, a_BaseNm) \
3001	{ /pszSubTest =/ a_szTest, \
3002	/RM/ RT_CONCAT(a_BaseNm, _c16), \
3003	/PE16/ RT_CONCAT(a_BaseNm, _c16), \
3004	/PE16_32/ RT_CONCAT(a_BaseNm, _c32), \
3005	/PE16_V86/ RT_CONCAT(a_BaseNm, _c16), \
3006	/PE32/ RT_CONCAT(a_BaseNm, _c32), \
3007	/PE32_16/ RT_CONCAT(a_BaseNm, _c16), \
3008	/PEV86/ RT_CONCAT(a_BaseNm, _c16), \
3009	/PP16/ RT_CONCAT(a_BaseNm, _c16), \
3010	/PP16_32/ RT_CONCAT(a_BaseNm, _c32), \
3011	/PP16_V86/ RT_CONCAT(a_BaseNm, _c16), \
3012	/PP32/ RT_CONCAT(a_BaseNm, _c32), \
3013	/PP32_16/ RT_CONCAT(a_BaseNm, _c16), \
3014	/PPV86/ RT_CONCAT(a_BaseNm, _c16), \
3015	/PAE16/ RT_CONCAT(a_BaseNm, _c16), \
3016	/PAE16_32/ RT_CONCAT(a_BaseNm, _c32), \
3017	/PAE16_V86/ RT_CONCAT(a_BaseNm, _c16), \
3018	/PAE32/ RT_CONCAT(a_BaseNm, _c32), \
3019	/PAE32_16/ RT_CONCAT(a_BaseNm, _c16), \
3020	/PAEV86/ RT_CONCAT(a_BaseNm, _c16), \
3021	/LM16/ RT_CONCAT(a_BaseNm, _c16), \
3022	/LM32/ RT_CONCAT(a_BaseNm, _c32), \
3023	/LM64/ RT_CONCAT(a_BaseNm, _c64), \
3024	}
3025
3026	/** @def BS3TESTMODE_PROTOTYPES_CMN
3027	* A set of standard protypes to go with #BS3TESTMODEENTRY_CMN. */
3028	#define BS3TESTMODE_PROTOTYPES_CMN(a_BaseNm) \
3029	FNBS3TESTDOMODE /BS3_FAR_CODE/ RT_CONCAT(a_BaseNm, _c16); \
3030	FNBS3TESTDOMODE /BS3_FAR_CODE/ RT_CONCAT(a_BaseNm, _c32); \
3031	FNBS3TESTDOMODE /BS3_FAR_CODE/ RT_CONCAT(a_BaseNm, _c64)
3032
3033	/** @def BS3TESTMODEENTRY_MODE
3034	* Produces a BS3TESTMODEENTRY initializer for a full set of mode test
3035	* functions. */
3036	#define BS3TESTMODEENTRY_MODE(a_szTest, a_BaseNm) \
3037	{ /pszSubTest =/ a_szTest, \
3038	/RM/ RT_CONCAT(a_BaseNm, _rm), \
3039	/PE16/ RT_CONCAT(a_BaseNm, _pe16), \
3040	/PE16_32/ RT_CONCAT(a_BaseNm, _pe16_32), \
3041	/PE16_V86/ RT_CONCAT(a_BaseNm, _pe16_v86), \
3042	/PE32/ RT_CONCAT(a_BaseNm, _pe32), \
3043	/PE32_16/ RT_CONCAT(a_BaseNm, _pe32_16), \
3044	/PEV86/ RT_CONCAT(a_BaseNm, _pev86), \
3045	/PP16/ RT_CONCAT(a_BaseNm, _pp16), \
3046	/PP16_32/ RT_CONCAT(a_BaseNm, _pp16_32), \
3047	/PP16_V86/ RT_CONCAT(a_BaseNm, _pp16_v86), \
3048	/PP32/ RT_CONCAT(a_BaseNm, _pp32), \
3049	/PP32_16/ RT_CONCAT(a_BaseNm, _pp32_16), \
3050	/PPV86/ RT_CONCAT(a_BaseNm, _ppv86), \
3051	/PAE16/ RT_CONCAT(a_BaseNm, _pae16), \
3052	/PAE16_32/ RT_CONCAT(a_BaseNm, _pae16_32), \
3053	/PAE16_V86/ RT_CONCAT(a_BaseNm, _pae16_v86), \
3054	/PAE32/ RT_CONCAT(a_BaseNm, _pae32), \
3055	/PAE32_16/ RT_CONCAT(a_BaseNm, _pae32_16), \
3056	/PAEV86/ RT_CONCAT(a_BaseNm, _paev86), \
3057	/LM16/ RT_CONCAT(a_BaseNm, _lm16), \
3058	/LM32/ RT_CONCAT(a_BaseNm, _lm32), \
3059	/LM64/ RT_CONCAT(a_BaseNm, _lm64), \
3060	}
3061
3062	/** @def BS3TESTMODE_PROTOTYPES_MODE
3063	* A set of standard protypes to go with #BS3TESTMODEENTRY_MODE. */
3064	#define BS3TESTMODE_PROTOTYPES_MODE(a_BaseNm) \
3065	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _rm); \
3066	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe16); \
3067	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe16_32); \
3068	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe16_v86); \
3069	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe32); \
3070	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pe32_16); \
3071	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pev86); \
3072	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp16); \
3073	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp16_32); \
3074	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp16_v86); \
3075	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp32); \
3076	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pp32_16); \
3077	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _ppv86); \
3078	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae16); \
3079	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae16_32); \
3080	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae16_v86); \
3081	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae32); \
3082	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _pae32_16); \
3083	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _paev86); \
3084	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _lm16); \
3085	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _lm32); \
3086	FNBS3TESTDOMODE RT_CONCAT(a_BaseNm, _lm64)
3087
3088
3089	/**
3090	* One worker drives all modes.
3091	*
3092	* This is an alternative to BS3TESTMODEENTRY where one worker, typically
3093	* 16-bit, does all the test driver work. It's called repeatedly from all
3094	* the modes being tested.
3095	*/
3096	typedef struct BS3TESTMODEBYONEENTRY
3097	{
3098	const char * BS3_FAR pszSubTest;
3099	PFNBS3TESTDOMODE pfnWorker;
3100	uint32_t u32Reserved;
3101	} BS3TESTMODEBYONEENTRY;
3102	/** Pointer to a mode-by-one sub-test entry. */
3103	typedef BS3TESTMODEBYONEENTRY const *PCBS3TESTMODEBYONEENTRY;
3104
3105
3106	/**
3107	* Sets the full GDTR register.
3108	*
3109	* @param cbLimit The limit.
3110	* @param uBase The base address - 24, 32 or 64 bit depending on the
3111	* CPU mode.
3112	*/
3113	BS3_CMN_PROTO_NOSB(void, Bs3UtilSetFullGdtr,(uint16_t cbLimit, uint64_t uBase));
3114
3115	/**
3116	* Sets the full IDTR register.
3117	*
3118	* @param cbLimit The limit.
3119	* @param uBase The base address - 24, 32 or 64 bit depending on the
3120	* CPU mode.
3121	*/
3122	BS3_CMN_PROTO_NOSB(void, Bs3UtilSetFullIdtr,(uint16_t cbLimit, uint64_t uBase));
3123
3124
3125	/** @} */
3126
3127
3128	/**
3129	* Initializes all of boot sector kit \#3.
3130	*/
3131	BS3_DECL(void) Bs3InitAll_rm(void);
3132
3133	/**
3134	* Initializes the REAL and TILED memory pools.
3135	*
3136	* For proper operation on OLDer CPUs, call #Bs3CpuDetect_mmm first.
3137	*/
3138	BS3_DECL_FAR(void) Bs3InitMemory_rm_far(void);
3139
3140	/**
3141	* Initialized the X0TEXT16 and X1TEXT16 GDT entries.
3142	*/
3143	BS3_DECL_FAR(void) Bs3InitGdt_rm_far(void);
3144
3145
3146
3147	/** @defgroup grp_bs3kit_mode Mode Specific Functions and Data
3148	*
3149	* The mode specific functions come in bit count variations and CPU mode
3150	* variations. The bs3kit-template-header.h/mac defines the BS3_NM macro to
3151	* mangle a function or variable name according to the target CPU mode. In
3152	* non-templated code, it's common to spell the name out in full.
3153	*
3154	* @{
3155	*/
3156
3157
3158	/** @def BS3_MODE_PROTO_INT
3159	* Internal macro for emitting prototypes for mode functions.
3160	*
3161	* @param a_RetType The return type.
3162	* @param a_Name The function basename.
3163	* @param a_Params The parameter list (in parentheses).
3164	* @sa BS3_MODE_PROTO_STUB, BS3_MODE_PROTO_NOSB
3165	*/
3166	#define BS3_MODE_PROTO_INT(a_RetType, a_Name, a_Params) \
3167	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_rm) a_Params; \
3168	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pe16) a_Params; \
3169	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pe16_32) a_Params; \
3170	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pe16_v86) a_Params; \
3171	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pe32) a_Params; \
3172	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pe32_16) a_Params; \
3173	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pev86) a_Params; \
3174	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pp16) a_Params; \
3175	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pp16_32) a_Params; \
3176	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pp16_v86) a_Params; \
3177	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pp32) a_Params; \
3178	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pp32_16) a_Params; \
3179	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_ppv86) a_Params; \
3180	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pae16) a_Params; \
3181	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pae16_32) a_Params; \
3182	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pae16_v86) a_Params; \
3183	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pae32) a_Params; \
3184	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_pae32_16) a_Params; \
3185	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_paev86) a_Params; \
3186	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_lm16) a_Params; \
3187	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_lm32) a_Params; \
3188	BS3_DECL_NEAR(a_RetType) RT_CONCAT(a_Name,_lm64) a_Params; \
3189	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_rm_far) a_Params; \
3190	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pe16_far) a_Params; \
3191	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pe16_v86_far) a_Params; \
3192	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pe32_16_far) a_Params; \
3193	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pev86_far) a_Params; \
3194	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pp16_far) a_Params; \
3195	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pp16_v86_far) a_Params; \
3196	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pp32_16_far) a_Params; \
3197	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_ppv86_far) a_Params; \
3198	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pae16_far) a_Params; \
3199	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pae16_v86_far)a_Params; \
3200	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_pae32_16_far) a_Params; \
3201	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_paev86_far) a_Params; \
3202	BS3_DECL_FAR(a_RetType) RT_CONCAT(a_Name,_lm16_far) a_Params
3203
3204	/** @def BS3_MODE_PROTO_STUB
3205	* Macro for prototyping all the variations of a mod function with automatic
3206	* near -> far stub.
3207	*
3208	* @param a_RetType The return type.
3209	* @param a_Name The function basename.
3210	* @param a_Params The parameter list (in parentheses).
3211	* @sa BS3_MODE_PROTO_STUB, BS3_MODE_PROTO_NOSB
3212	*/
3213	#define BS3_MODE_PROTO_STUB(a_RetType, a_Name, a_Params) BS3_MODE_PROTO_INT(a_RetType, a_Name, a_Params)
3214
3215	/** @def BS3_MODE_PROTO_STUB
3216	* Macro for prototyping all the variations of a mod function without any
3217	* near -> far stub.
3218	*
3219	* @param a_RetType The return type.
3220	* @param a_Name The function basename.
3221	* @param a_Params The parameter list (in parentheses).
3222	* @sa BS3_MODE_PROTO_STUB, BS3_MODE_PROTO_NOSB
3223	*/
3224	#define BS3_MODE_PROTO_NOSB(a_RetType, a_Name, a_Params) BS3_MODE_PROTO_INT(a_RetType, a_Name, a_Params)
3225
3226
3227	/**
3228	* Macro for reducing typing.
3229	*
3230	* Doxygen knows how to expand this, well, kind of.
3231	*
3232	* @remarks Variables instantiated in assembly code should define two labels,
3233	* with and without leading underscore. Variables instantiated from
3234	* C/C++ code doesn't need to as the object file convert does this for
3235	* 64-bit object files.
3236	*/
3237	#define BS3_MODE_EXPAND_EXTERN_DATA16(a_VarType, a_VarName, a_Suffix) \
3238	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_rm) a_Suffix; \
3239	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pe16) a_Suffix; \
3240	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pe16_32) a_Suffix; \
3241	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pe16_v86) a_Suffix; \
3242	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pe32) a_Suffix; \
3243	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pe32_16) a_Suffix; \
3244	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pev86) a_Suffix; \
3245	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pp16) a_Suffix; \
3246	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pp16_32) a_Suffix; \
3247	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pp16_v86) a_Suffix; \
3248	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pp32) a_Suffix; \
3249	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pp32_16) a_Suffix; \
3250	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_ppv86) a_Suffix; \
3251	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pae16) a_Suffix; \
3252	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pae16_32) a_Suffix; \
3253	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pae16_v86)a_Suffix; \
3254	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pae32) a_Suffix; \
3255	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_pae32_16) a_Suffix; \
3256	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_paev86) a_Suffix; \
3257	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_lm16) a_Suffix; \
3258	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_lm32) a_Suffix; \
3259	extern a_VarType BS3_FAR_DATA RT_CONCAT(a_VarName,_lm64) a_Suffix
3260
3261
3262	/** The TMPL_MODE_STR value for each mode.
3263	* These are all in DATA16 so they can be accessed from any code. */
3264	BS3_MODE_EXPAND_EXTERN_DATA16(const char, g_szBs3ModeName, []);
3265
3266	/**
3267	* Basic CPU detection.
3268	*
3269	* This sets the #g_uBs3CpuDetected global variable to the return value.
3270	*
3271	* @returns BS3CPU_XXX value with the BS3CPU_F_CPUID flag set depending on
3272	* capabilities.
3273	*/
3274	BS3_MODE_PROTO_NOSB(uint8_t, Bs3CpuDetect,(void));
3275
3276	/** @name BS3CPU_XXX - CPU detected by BS3CpuDetect_c16() and friends.
3277	* @{ */
3278	#define BS3CPU_8086 UINT16_C(0x0001) /*< Both 8086 and 8088. /
3279	#define BS3CPU_V20 UINT16_C(0x0002) /*< Both NEC V20, V30 and relatives. /
3280	#define BS3CPU_80186 UINT16_C(0x0003) /*< Both 80186 and 80188. /
3281	#define BS3CPU_80286 UINT16_C(0x0004)
3282	#define BS3CPU_80386 UINT16_C(0x0005)
3283	#define BS3CPU_80486 UINT16_C(0x0006)
3284	#define BS3CPU_Pentium UINT16_C(0x0007)
3285	#define BS3CPU_PPro UINT16_C(0x0008)
3286	#define BS3CPU_PProOrNewer UINT16_C(0x0009)
3287	/** CPU type mask. This is a full byte so it's possible to use byte access
3288	* without and AND'ing to get the type value. */
3289	#define BS3CPU_TYPE_MASK UINT16_C(0x00ff)
3290	/** Flag indicating that the CPUID instruction is supported by the CPU. */
3291	#define BS3CPU_F_CPUID UINT16_C(0x0100)
3292	/** Flag indicating that extend CPUID leaves are available (at least two). */
3293	#define BS3CPU_F_CPUID_EXT_LEAVES UINT16_C(0x0200)
3294	/** Flag indicating that the CPU supports PAE. */
3295	#define BS3CPU_F_PAE UINT16_C(0x0400)
3296	/** Flag indicating that the CPU supports the page size extension (4MB pages). */
3297	#define BS3CPU_F_PSE UINT16_C(0x0800)
3298	/** Flag indicating that the CPU supports long mode. */
3299	#define BS3CPU_F_LONG_MODE UINT16_C(0x1000)
3300	/** @} */
3301
3302	/** The return value of #Bs3CpuDetect_mmm. (Initial value is BS3CPU_TYPE_MASK.) */
3303	extern uint16_t g_uBs3CpuDetected;
3304
3305	/**
3306	* Initializes trap handling for the current system.
3307	*
3308	* Calls the appropriate Bs3Trap16Init, Bs3Trap32Init or Bs3Trap64Init function.
3309	*/
3310	BS3_MODE_PROTO_STUB(void, Bs3TrapInit,(void));
3311
3312	/**
3313	* Executes the array of tests in every possibly mode.
3314	*
3315	* @param paEntries The mode sub-test entries.
3316	* @param cEntries The number of sub-test entries.
3317	*/
3318	BS3_MODE_PROTO_NOSB(void, Bs3TestDoModes,(PCBS3TESTMODEENTRY paEntries, size_t cEntries));
3319
3320	/**
3321	* Executes the array of tests in every possibly mode, unitifed driver.
3322	*
3323	* This requires much less code space than Bs3TestDoModes as there is only one
3324	* instace of each sub-test driver code, instead of 3 (cmn) or 22 (per-mode)
3325	* copies.
3326	*
3327	* @param paEntries The mode sub-test-by-one entries.
3328	* @param cEntries The number of sub-test-by-one entries.
3329	* @param fFlags Reserved for the future, MBZ.
3330	*/
3331	BS3_MODE_PROTO_NOSB(void, Bs3TestDoModesByOne,(PCBS3TESTMODEBYONEENTRY paEntries, size_t cEntries, uint32_t fFlags));
3332
3333
3334	/** @} */
3335
3336	/** @} */
3337
3338	RT_C_DECLS_END
3339
3340
3341	/*
3342	* Include default function symbol mangling.
3343	*/
3344	#include "bs3kit-mangling-code.h"
3345
3346	/*
3347	* Change 16-bit text segment if requested.
3348	*/
3349	#if defined(BS3_USE_ALT_16BIT_TEXT_SEG) && ARCH_BITS == 16 && !defined(BS3_DONT_CHANGE_TEXT_SEG)
3350	# if (defined(BS3_USE_RM_TEXT_SEG) + defined(BS3_USE_X0_TEXT_SEG) + defined(BS3_USE_X1_TEXT_SEG)) != 1
3351	# error "Cannot set more than one alternative 16-bit text segment!"
3352	# elif defined(BS3_USE_RM_TEXT_SEG)
3353	# pragma code_seg("BS3RMTEXT16", "BS3CLASS16RMCODE")
3354	# elif defined(BS3_USE_X0_TEXT_SEG)
3355	# pragma code_seg("BS3X0TEXT16", "BS3CLASS16X0CODE")
3356	# elif defined(BS3_USE_X1_TEXT_SEG)
3357	# pragma code_seg("BS3X1TEXT16", "BS3CLASS16X1CODE")
3358	# else
3359	# error "Huh? Which alternative text segment did you want again?"
3360	# endif
3361	#endif
3362
3363	#endif
3364

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source: vbox/trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3kit.h@ 64367

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