lx.h@ 74644

Last change on this file since 74644 was 74644, checked in by vboxsync, 6 years ago
IPRT: More adjustments to the LX and Mach-O loader code from kStuff. bugref:9232
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
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1	/* $Id: lx.h 74644 2018-10-06 19:58:37Z vboxsync $ */
2	/** @file
3	* LX structures, types and defines.
4	*/
5
6	/*
7	* Copyright (c) 2006-2007 Knut St. Osmundsen <[email protected]>
8	*
9	* Permission is hereby granted, free of charge, to any person
10	* obtaining a copy of this software and associated documentation
11	* files (the "Software"), to deal in the Software without
12	* restriction, including without limitation the rights to use,
13	* copy, modify, merge, publish, distribute, sublicense, and/or sell
14	* copies of the Software, and to permit persons to whom the
15	* Software is furnished to do so, subject to the following
16	* conditions:
17	*
18	* The above copyright notice and this permission notice shall be
19	* included in all copies or substantial portions of the Software.
20	*
21	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23	* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25	* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28	* OTHER DEALINGS IN THE SOFTWARE.
29	*/
30
31	#ifndef ___iprt_formats_lx_h___
32	#define ___iprt_formats_lx_h___
33
34	#include <iprt/types.h>
35	#include <iprt/assertcompile.h>
36
37	RT_C_DECLS_BEGIN
38
39	#ifndef IMAGE_OS2_SIGNATURE_LX
40	/** LX signature ("LX") */
41	# define IMAGE_LX_SIGNATURE K_LE2H_U16('L' \| ('X' << 8))
42	#endif
43
44
45	/**
46	* Linear eXecutable header.
47	* This structure is exactly 196 bytes long.
48	*/
49	typedef struct e32_exe
50	{
51	uint8_t e32_magic[2];
52	uint8_t e32_border;
53	uint8_t e32_worder;
54	uint32_t e32_level;
55	uint16_t e32_cpu;
56	uint16_t e32_os;
57	uint32_t e32_ver;
58	uint32_t e32_mflags;
59	uint32_t e32_mpages;
60	uint32_t e32_startobj;
61	uint32_t e32_eip;
62	uint32_t e32_stackobj;
63	uint32_t e32_esp;
64	uint32_t e32_pagesize;
65	uint32_t e32_pageshift;
66	/** The size of the fixup section.
67	* The fixup section consists of the fixup page table, the fixup record table,
68	* the import module table, and the import procedure name table.
69	*/
70	uint32_t e32_fixupsize;
71	uint32_t e32_fixupsum;
72	/** The size of the resident loader section.
73	* This includes the object table, the object page map table, the resource table, the resident name table,
74	* the entry table, the module format directives table, and the page checksum table (?). */
75	uint32_t e32_ldrsize;
76	/** The checksum of the loader section. 0 if not calculated. */
77	uint32_t e32_ldrsum;
78	/** The offset of the object table relative to this structure. */
79	uint32_t e32_objtab;
80	/** Count of objects. */
81	uint32_t e32_objcnt;
82	/** The offset of the object page map table relative to this structure. */
83	uint32_t e32_objmap;
84	/** The offset of the object iterated pages (whatever this is used for) relative to the start of the file. */
85	uint32_t e32_itermap;
86	/** The offset of the resource table relative to this structure. */
87	uint32_t e32_rsrctab;
88	/** The number of entries in the resource table. */
89	uint32_t e32_rsrccnt;
90	/** The offset of the resident name table relative to this structure. */
91	uint32_t e32_restab;
92	/** The offset of the entry (export) table relative to this structure. */
93	uint32_t e32_enttab;
94	/** The offset of the module format directives table relative to this structure. */
95	uint32_t e32_dirtab;
96	/** The number of entries in the module format directives table. */
97	uint32_t e32_dircnt;
98	/** The offset of the fixup page table relative to this structure. */
99	uint32_t e32_fpagetab;
100	/** The offset of the fixup record table relative to this structure. */
101	uint32_t e32_frectab;
102	/** The offset of the import module name table relative to this structure. */
103	uint32_t e32_impmod;
104	/** The number of entries in the import module name table. */
105	uint32_t e32_impmodcnt;
106	/** The offset of the import procedure name table relative to this structure. */
107	uint32_t e32_impproc;
108	/** The offset of the page checksum table relative to this structure. */
109	uint32_t e32_pagesum;
110	/** The offset of the data pages relative to the start of the file. */
111	uint32_t e32_datapage;
112	/** The number of preload pages (ignored). */
113	uint32_t e32_preload;
114	/** The offset of the non-resident name table relative to the start of the file. */
115	uint32_t e32_nrestab;
116	/** The size of the non-resident name table. */
117	uint32_t e32_cbnrestab;
118	uint32_t e32_nressum;
119	uint32_t e32_autodata;
120	uint32_t e32_debuginfo;
121	uint32_t e32_debuglen;
122	uint32_t e32_instpreload;
123	uint32_t e32_instdemand;
124	uint32_t e32_heapsize;
125	uint32_t e32_stacksize;
126	uint8_t e32_res3[20];
127	} e32_exe;
128	AssertCompileSize(struct e32_exe, 196);
129
130	/** e32_magic[0] */
131	#define E32MAGIC1 'L'
132	/** e32_magic[1] */
133	#define E32MAGIC2 'X'
134	/** MAKEWORD(e32_magic[0], e32_magic[1]) */
135	#define E32MAGIC 0x584c
136	/** e32_border - little endian */
137	#define E32LEBO 0
138	/** e32_border - big endian */
139	#define E32BEBO 1
140	/** e32_worder - little endian */
141	#define E32LEWO 0
142	/** e32_worder - big endian */
143	#define E32BEWO 1
144	/** e32_level */
145	#define E32LEVEL UINT32_C(0)
146	/** e32_cpu - 80286 */
147	#define E32CPU286 1
148	/** e32_cpu - 80386 */
149	#define E32CPU386 2
150	/** e32_cpu - 80486 */
151	#define E32CPU486 3
152	/** e32_pagesize */
153	#define OBJPAGELEN UINT32_C(0x1000)
154
155
156	/** @name e32_mflags
157	* @{ */
158	/** App Type: Fullscreen only. */
159	#define E32NOPMW UINT32_C(0x00000100)
160	/** App Type: PM API. */
161	#define E32PMAPI UINT32_C(0x00000300)
162	/** App Type: PM VIO compatible. */
163	#define E32PMW UINT32_C(0x00000200)
164	/** Application type mask. */
165	#define E32APPMASK UINT32_C(0x00000300)
166	/** Executable module. */
167	#define E32MODEXE UINT32_C(0x00000000)
168	/** Dynamic link library (DLL / library) module. */
169	#define E32MODDLL UINT32_C(0x00008000)
170	/** Protected memory DLL. */
171	#define E32PROTDLL UINT32_C(0x00010000)
172	/** Physical Device Driver. */
173	#define E32MODPDEV UINT32_C(0x00020000)
174	/** Virtual Device Driver. */
175	#define E32MODVDEV UINT32_C(0x00028000)
176	/** Device driver */
177	#define E32DEVICE E32MODPDEV
178	/** Dynamic link library (DLL / library) module. */
179	#define E32NOTP E32MODDLL
180	/** Protected memory DLL. */
181	#define E32MODPROTDLL (E32MODDLL \| E32PROTDLL)
182	/** Module Type mask. */
183	#define E32MODMASK UINT32_C(0x00038000)
184	/** Not loadable (linker error). */
185	#define E32NOLOAD UINT32_C(0x00002000)
186	/** No internal fixups. */
187	#define E32NOINTFIX UINT32_C(0x00000010)
188	/** No external fixups (i.e. imports). */
189	#define E32NOEXTFIX UINT32_C(0x00000020)
190	/** System DLL, no internal fixups. */
191	#define E32SYSDLL UINT32_C(0x00000008)
192	/** Global (set) or per instance (cleared) library initialization. */
193	#define E32LIBINIT UINT32_C(0x00000004)
194	/** Global (set) or per instance (cleared) library termination. */
195	#define E32LIBTERM UINT32_C(0x40000000)
196	/** Indicates when set in an executable that the process isn't SMP safe. */
197	#define E32NOTMPSAFE UINT32_C(0x00080000)
198	/** @} */
199
200
201	/** @name Relocations (aka Fixups).
202	* @{ */
203	typedef union r32_offset
204	{
205	uint16_t offset16;
206	uint32_t offset32;
207	} r32_offset;
208	AssertCompileSize(r32_offset, 4);
209
210	/** A relocation.
211	* @remark this structure isn't very usable since LX relocations comes in too many size variations.
212	*/
213	#pragma pack(1)
214	typedef struct r32_rlc
215	{
216	uint8_t nr_stype;
217	uint8_t nr_flags;
218	int16_t r32_soff;
219	uint16_t r32_objmod;
220
221	union targetid
222	{
223	r32_offset intref;
224	union extfixup
225	{
226	r32_offset proc;
227	uint32_t ord;
228	} extref;
229	struct addfixup
230	{
231	uint16_t entry;
232	r32_offset addval;
233	} addfix;
234	} r32_target;
235	uint16_t r32_srccount;
236	uint16_t r32_chain;
237	} r32_rlc;
238	#pragma pack()
239	AssertCompileSize(r32_rlc, 16);
240
241	/** @name Some attempt at size constanstants.
242	* @{
243	*/
244	#define RINTSIZE16 8
245	#define RINTSIZE32 10
246	#define RORDSIZE 8
247	#define RNAMSIZE16 8
248	#define RNAMSIZE32 10
249	#define RADDSIZE16 10
250	#define RADDSIZE32 12
251	/** @} */
252
253	/** @name nr_stype (source flags)
254	* @{ */
255	#define NRSBYT 0x00
256	#define NRSSEG 0x02
257	#define NRSPTR 0x03
258	#define NRSOFF 0x05
259	#define NRPTR48 0x06
260	#define NROFF32 0x07
261	#define NRSOFF32 0x08
262	#define NRSTYP 0x0f
263	#define NRSRCMASK 0x0f
264	#define NRALIAS 0x10
265	#define NRCHAIN 0x20
266	/** @} */
267
268	/** @name nr_flags (target flags)
269	* @{ */
270	#define NRRINT 0x00
271	#define NRRORD 0x01
272	#define NRRNAM 0x02
273	#define NRRENT 0x03
274	#define NRRTYP 0x03
275	#define NRADD 0x04
276	#define NRICHAIN 0x08
277	#define NR32BITOFF 0x10
278	#define NR32BITADD 0x20
279	#define NR16OBJMOD 0x40
280	#define NR8BITORD 0x80
281	/** @} */
282
283	/** @} */
284
285
286	/** @name The Object Table (aka segment table)
287	* @{ */
288
289	/** The Object Table Entry. */
290	typedef struct o32_obj
291	{
292	/** The size of the object. */
293	uint32_t o32_size;
294	/** The base address of the object. */
295	uint32_t o32_base;
296	/** Object flags. */
297	uint32_t o32_flags;
298	/** Page map index. */
299	uint32_t o32_pagemap;
300	/** Page map size. (doesn't need to be o32_size >> page shift). */
301	uint32_t o32_mapsize;
302	/** Reserved */
303	uint32_t o32_reserved;
304	} o32_obj;
305	AssertCompileSize(o32_obj, 24);
306
307	/** @name o32_flags
308	* @{ */
309	/** Read access. */
310	#define OBJREAD UINT32_C(0x00000001)
311	/** Write access. */
312	#define OBJWRITE UINT32_C(0x00000002)
313	/** Execute access. */
314	#define OBJEXEC UINT32_C(0x00000004)
315	/** Resource object. */
316	#define OBJRSRC UINT32_C(0x00000008)
317	/** The object is discarable (i.e. don't swap, just load in pages from the executable).
318	* This overlaps a bit with object type. */
319	#define OBJDISCARD UINT32_C(0x00000010)
320	/** The object is shared. */
321	#define OBJSHARED UINT32_C(0x00000020)
322	/** The object has preload pages. */
323	#define OBJPRELOAD UINT32_C(0x00000040)
324	/** The object has invalid pages. */
325	#define OBJINVALID UINT32_C(0x00000080)
326	/** Non-permanent, link386 bug. */
327	#define LNKNONPERM UINT32_C(0x00000600)
328	/** Non-permanent, correct 'value'. */
329	#define OBJNONPERM UINT32_C(0x00000000)
330	/** Obj Type: The object is permanent and swappable. */
331	#define OBJPERM UINT32_C(0x00000100)
332	/** Obj Type: The object is permanent and resident (i.e. not swappable). */
333	#define OBJRESIDENT UINT32_C(0x00000200)
334	/** Obj Type: The object is resident and contigious. */
335	#define OBJCONTIG UINT32_C(0x00000300)
336	/** Obj Type: The object is permanent and long locable. */
337	#define OBJDYNAMIC UINT32_C(0x00000400)
338	/** Object type mask. */
339	#define OBJTYPEMASK UINT32_C(0x00000700)
340	/** x86: The object require an 16:16 alias. */
341	#define OBJALIAS16 UINT32_C(0x00001000)
342	/** x86: Big/Default selector setting, i.e. toggle 32-bit or 16-bit. */
343	#define OBJBIGDEF UINT32_C(0x00002000)
344	/** x86: conforming selector setting (weird stuff). */
345	#define OBJCONFORM UINT32_C(0x00004000)
346	/** x86: IOPL. */
347	#define OBJIOPL UINT32_C(0x00008000)
348	/** @} */
349
350	/** A Object Page Map Entry. */
351	typedef struct o32_map
352	{
353	/** The file offset of the page. */
354	uint32_t o32_pagedataoffset;
355	/** The number of bytes of raw page data. */
356	uint16_t o32_pagesize;
357	/** Per page flags describing how the page is encoded in the file. */
358	uint16_t o32_pageflags;
359	} o32_map;
360	AssertCompileSize(o32_map, 8);
361
362	/** @name o32 o32_pageflags
363	* @{
364	*/
365	/** Raw page (uncompressed) in the file. */
366	#define VALID UINT16_C(0x0000)
367	/** RLE encoded page in file. */
368	#define ITERDATA UINT16_C(0x0001)
369	/** Invalid page, nothing in the file. */
370	#define INVALID UINT16_C(0x0002)
371	/** Zero page, nothing in file. */
372	#define ZEROED UINT16_C(0x0003)
373	/** range of pages (what is this?) */
374	#define RANGE UINT16_C(0x0004)
375	/** Compressed page in file. */
376	#define ITERDATA2 UINT16_C(0x0005)
377	/** @} */
378
379
380	/** Iteration Record format (RLE compressed page). */
381	#pragma pack(1)
382	typedef struct LX_Iter
383	{
384	/** Number of iterations. */
385	uint16_t LX_nIter;
386	/** The number of bytes that's being iterated. */
387	uint16_t LX_nBytes;
388	/** The bytes. */
389	uint8_t LX_Iterdata;
390	} LX_Iter;
391	#pragma pack()
392	AssertCompileSize(LX_Iter, 5);
393
394	/** @} */
395
396
397	/** A Resource Table Entry */
398	#pragma pack(1)
399	typedef struct rsrc32
400	{
401	/** Resource Type. */
402	uint16_t type;
403	/** Resource ID. */
404	uint16_t name;
405	/** Resource size in bytes. */
406	uint32_t cb;
407	/** The index of the object containing the resource. */
408	uint16_t obj;
409	/** Offset of the resource that within the object. */
410	uint32_t offset;
411	} rsrc32;
412	#pragma pack()
413	AssertCompileSize(rsrc32, 14);
414
415
416	/** @name The Entry Table (aka Export Table)
417	* @{ */
418
419	/** Entry bundle.
420	* Header descripting up to 255 entries that follows immediatly after this structure. */
421	typedef struct b32_bundle
422	{
423	/** The number of entries. */
424	uint8_t b32_cnt;
425	/** The type of bundle. */
426	uint8_t b32_type;
427	/** The index of the object containing these entry points. */
428	uint16_t b32_obj;
429	} b32_bundle;
430	AssertCompileSize(b32_bundle, 4);
431
432	/** @name b32_type
433	* @{ */
434	/** Empty bundle, filling up unused ranges of ordinals. */
435	#define EMPTY 0x00
436	/** 16-bit offset entry point. */
437	#define ENTRY16 0x01
438	/** 16-bit callgate entry point. */
439	#define GATE16 0x02
440	/** 32-bit offset entry point. */
441	#define ENTRY32 0x03
442	/** Forwarder entry point. */
443	#define ENTRYFWD 0x04
444	/** Typing information present indicator. */
445	#define TYPEINFO 0x80
446	/** @} */
447
448
449	/** Entry point. */
450	#pragma pack(1)
451	typedef struct e32_entry
452	{
453	/** Entry point flags */
454	uint8_t e32_flags; /* Entry point flags */
455	union entrykind
456	{
457	/** ENTRY16 or ENTRY32. */
458	r32_offset e32_offset;
459	/** GATE16 */
460	struct scallgate
461	{
462	/** Offset into segment. */
463	uint16_t offset;
464	/** The callgate selector */
465	uint16_t callgate;
466	} e32_callgate;
467	/** ENTRYFWD */
468	struct fwd
469	{
470	/** Module ordinal number (i.e. into the import module table). */
471	uint16_t modord;
472	/** Procedure name or ordinal number. */
473	uint32_t value;
474	} e32_fwd;
475	} e32_variant;
476	} e32_entry;
477	#pragma pack()
478
479	/** @name e32_flags
480	* @{ */
481	/** Exported entry (set) or private entry (clear). */
482	#define E32EXPORT 0x01
483	/** Uses shared data. */
484	#define E32SHARED 0x02
485	/** Parameter word count mask. */
486	#define E32PARAMS 0xf8
487	/** ENTRYFWD: Imported by ordinal (set) or by name (clear). */
488	#define FWD_ORDINAL 0x01
489	/** @} */
490
491	/** @name dunno
492	* @{ */
493	#define FIXENT16 3
494	#define FIXENT32 5
495	#define GATEENT16 5
496	#define FWDENT 7
497	/** @} */
498
499
500	RT_C_DECLS_END
501
502	#endif
503

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