lx.h@ 101690

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1	/* $Id: lx.h 81369 2019-10-18 21:13:03Z 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_INCLUDED_formats_lx_h
32	#define IPRT_INCLUDED_formats_lx_h
33	#ifndef RT_WITHOUT_PRAGMA_ONCE
34	# pragma once
35	#endif
36
37	#include <iprt/types.h>
38	#include <iprt/assertcompile.h>
39
40	RT_C_DECLS_BEGIN
41
42	/** @defgroup grp_rt_formats_lx LX executable format (OS/2)
43	* @ingroup grp_rt_formats
44	* @{ */
45
46	#ifndef IMAGE_OS2_SIGNATURE_LX
47	/** LX signature ("LX") */
48	# define IMAGE_LX_SIGNATURE K_LE2H_U16('L' \| ('X' << 8))
49	#endif
50
51	/**
52	* Linear eXecutable header.
53	* This structure is exactly 196 bytes long.
54	*/
55	typedef struct e32_exe
56	{
57	uint8_t e32_magic[2];
58	uint8_t e32_border;
59	uint8_t e32_worder;
60	uint32_t e32_level;
61	uint16_t e32_cpu;
62	uint16_t e32_os;
63	uint32_t e32_ver;
64	uint32_t e32_mflags;
65	uint32_t e32_mpages;
66	uint32_t e32_startobj;
67	uint32_t e32_eip;
68	uint32_t e32_stackobj;
69	uint32_t e32_esp;
70	uint32_t e32_pagesize;
71	uint32_t e32_pageshift;
72	/** The size of the fixup section.
73	* The fixup section consists of the fixup page table, the fixup record table,
74	* the import module table, and the import procedure name table.
75	*/
76	uint32_t e32_fixupsize;
77	uint32_t e32_fixupsum;
78	/** The size of the resident loader section.
79	* This includes the object table, the object page map table, the resource table, the resident name table,
80	* the entry table, the module format directives table, and the page checksum table (?). */
81	uint32_t e32_ldrsize;
82	/** The checksum of the loader section. 0 if not calculated. */
83	uint32_t e32_ldrsum;
84	/** The offset of the object table relative to this structure. */
85	uint32_t e32_objtab;
86	/** Count of objects. */
87	uint32_t e32_objcnt;
88	/** The offset of the object page map table relative to this structure. */
89	uint32_t e32_objmap;
90	/** The offset of the object iterated pages (whatever this is used for) relative to the start of the file. */
91	uint32_t e32_itermap;
92	/** The offset of the resource table relative to this structure. */
93	uint32_t e32_rsrctab;
94	/** The number of entries in the resource table. */
95	uint32_t e32_rsrccnt;
96	/** The offset of the resident name table relative to this structure. */
97	uint32_t e32_restab;
98	/** The offset of the entry (export) table relative to this structure. */
99	uint32_t e32_enttab;
100	/** The offset of the module format directives table relative to this structure. */
101	uint32_t e32_dirtab;
102	/** The number of entries in the module format directives table. */
103	uint32_t e32_dircnt;
104	/** The offset of the fixup page table relative to this structure. */
105	uint32_t e32_fpagetab;
106	/** The offset of the fixup record table relative to this structure. */
107	uint32_t e32_frectab;
108	/** The offset of the import module name table relative to this structure. */
109	uint32_t e32_impmod;
110	/** The number of entries in the import module name table. */
111	uint32_t e32_impmodcnt;
112	/** The offset of the import procedure name table relative to this structure. */
113	uint32_t e32_impproc;
114	/** The offset of the page checksum table relative to this structure. */
115	uint32_t e32_pagesum;
116	/** The offset of the data pages relative to the start of the file. */
117	uint32_t e32_datapage;
118	/** The number of preload pages (ignored). */
119	uint32_t e32_preload;
120	/** The offset of the non-resident name table relative to the start of the file. */
121	uint32_t e32_nrestab;
122	/** The size of the non-resident name table. */
123	uint32_t e32_cbnrestab;
124	uint32_t e32_nressum;
125	uint32_t e32_autodata;
126	uint32_t e32_debuginfo;
127	uint32_t e32_debuglen;
128	uint32_t e32_instpreload;
129	uint32_t e32_instdemand;
130	uint32_t e32_heapsize;
131	uint32_t e32_stacksize;
132	uint8_t e32_res3[20];
133	} e32_exe;
134	AssertCompileSize(struct e32_exe, 196);
135
136	/** e32_magic[0] */
137	#define E32MAGIC1 'L'
138	/** e32_magic[1] */
139	#define E32MAGIC2 'X'
140	/** MAKEWORD(e32_magic[0], e32_magic[1]) */
141	#define E32MAGIC 0x584c
142	/** e32_border - little endian */
143	#define E32LEBO 0
144	/** e32_border - big endian */
145	#define E32BEBO 1
146	/** e32_worder - little endian */
147	#define E32LEWO 0
148	/** e32_worder - big endian */
149	#define E32BEWO 1
150	/** e32_level */
151	#define E32LEVEL UINT32_C(0)
152	/** e32_cpu - 80286 */
153	#define E32CPU286 1
154	/** e32_cpu - 80386 */
155	#define E32CPU386 2
156	/** e32_cpu - 80486 */
157	#define E32CPU486 3
158	/** e32_pagesize */
159	#define OBJPAGELEN UINT32_C(0x1000)
160
161
162	/** @name e32_mflags
163	* @{ */
164	/** App Type: Fullscreen only. */
165	#define E32NOPMW UINT32_C(0x00000100)
166	/** App Type: PM API. */
167	#define E32PMAPI UINT32_C(0x00000300)
168	/** App Type: PM VIO compatible. */
169	#define E32PMW UINT32_C(0x00000200)
170	/** Application type mask. */
171	#define E32APPMASK UINT32_C(0x00000300)
172	/** Executable module. */
173	#define E32MODEXE UINT32_C(0x00000000)
174	/** Dynamic link library (DLL / library) module. */
175	#define E32MODDLL UINT32_C(0x00008000)
176	/** Protected memory DLL. */
177	#define E32PROTDLL UINT32_C(0x00010000)
178	/** Physical Device Driver. */
179	#define E32MODPDEV UINT32_C(0x00020000)
180	/** Virtual Device Driver. */
181	#define E32MODVDEV UINT32_C(0x00028000)
182	/** Device driver */
183	#define E32DEVICE E32MODPDEV
184	/** Dynamic link library (DLL / library) module. */
185	#define E32NOTP E32MODDLL
186	/** Protected memory DLL. */
187	#define E32MODPROTDLL (E32MODDLL \| E32PROTDLL)
188	/** Module Type mask. */
189	#define E32MODMASK UINT32_C(0x00038000)
190	/** Not loadable (linker error). */
191	#define E32NOLOAD UINT32_C(0x00002000)
192	/** No internal fixups. */
193	#define E32NOINTFIX UINT32_C(0x00000010)
194	/** No external fixups (i.e. imports). */
195	#define E32NOEXTFIX UINT32_C(0x00000020)
196	/** System DLL, no internal fixups. */
197	#define E32SYSDLL UINT32_C(0x00000008)
198	/** Global (set) or per instance (cleared) library initialization. */
199	#define E32LIBINIT UINT32_C(0x00000004)
200	/** Global (set) or per instance (cleared) library termination. */
201	#define E32LIBTERM UINT32_C(0x40000000)
202	/** Indicates when set in an executable that the process isn't SMP safe. */
203	#define E32NOTMPSAFE UINT32_C(0x00080000)
204	/** @} */
205
206
207	/** @defgroup grp_rt_formats_lx_relocs Relocations (aka Fixups).
208	* @{ */
209	typedef union r32_offset
210	{
211	uint16_t offset16;
212	uint32_t offset32;
213	} r32_offset;
214	AssertCompileSize(r32_offset, 4);
215
216	/** A relocation.
217	* @remark this structure isn't very usable since LX relocations comes in too many size variations.
218	*/
219	#pragma pack(1)
220	typedef struct r32_rlc
221	{
222	uint8_t nr_stype;
223	uint8_t nr_flags;
224	int16_t r32_soff;
225	uint16_t r32_objmod;
226
227	union targetid
228	{
229	r32_offset intref;
230	union extfixup
231	{
232	r32_offset proc;
233	uint32_t ord;
234	} extref;
235	struct addfixup
236	{
237	uint16_t entry;
238	r32_offset addval;
239	} addfix;
240	} r32_target;
241	uint16_t r32_srccount;
242	uint16_t r32_chain;
243	} r32_rlc;
244	#pragma pack()
245	AssertCompileSize(r32_rlc, 16);
246	/** @} */
247
248	/** @name Some attempt at size constanstants.
249	* @{
250	*/
251	#define RINTSIZE16 8
252	#define RINTSIZE32 10
253	#define RORDSIZE 8
254	#define RNAMSIZE16 8
255	#define RNAMSIZE32 10
256	#define RADDSIZE16 10
257	#define RADDSIZE32 12
258	/** @} */
259
260	/** @name nr_stype (source flags)
261	* @{ */
262	#define NRSBYT 0x00
263	#define NRSSEG 0x02
264	#define NRSPTR 0x03
265	#define NRSOFF 0x05
266	#define NRPTR48 0x06
267	#define NROFF32 0x07
268	#define NRSOFF32 0x08
269	#define NRSTYP 0x0f
270	#define NRSRCMASK 0x0f
271	#define NRALIAS 0x10
272	#define NRCHAIN 0x20
273	/** @} */
274
275	/** @name nr_flags (target flags)
276	* @{ */
277	#define NRRINT 0x00
278	#define NRRORD 0x01
279	#define NRRNAM 0x02
280	#define NRRENT 0x03
281	#define NRRTYP 0x03
282	#define NRADD 0x04
283	#define NRICHAIN 0x08
284	#define NR32BITOFF 0x10
285	#define NR32BITADD 0x20
286	#define NR16OBJMOD 0x40
287	#define NR8BITORD 0x80
288	/** @} */
289
290	/** @} */
291
292
293	/** @defgroup grp_rt_formats_lx_object_tab The Object Table (aka segment table)
294	* @{ */
295
296	/** The Object Table Entry. */
297	typedef struct o32_obj
298	{
299	/** The size of the object. */
300	uint32_t o32_size;
301	/** The base address of the object. */
302	uint32_t o32_base;
303	/** Object flags. */
304	uint32_t o32_flags;
305	/** Page map index. */
306	uint32_t o32_pagemap;
307	/** Page map size. (doesn't need to be o32_size >> page shift). */
308	uint32_t o32_mapsize;
309	/** Reserved */
310	uint32_t o32_reserved;
311	} o32_obj;
312	AssertCompileSize(o32_obj, 24);
313
314	/** @name o32_flags
315	* @{ */
316	/** Read access. */
317	#define OBJREAD UINT32_C(0x00000001)
318	/** Write access. */
319	#define OBJWRITE UINT32_C(0x00000002)
320	/** Execute access. */
321	#define OBJEXEC UINT32_C(0x00000004)
322	/** Resource object. */
323	#define OBJRSRC UINT32_C(0x00000008)
324	/** The object is discarable (i.e. don't swap, just load in pages from the executable).
325	* This overlaps a bit with object type. */
326	#define OBJDISCARD UINT32_C(0x00000010)
327	/** The object is shared. */
328	#define OBJSHARED UINT32_C(0x00000020)
329	/** The object has preload pages. */
330	#define OBJPRELOAD UINT32_C(0x00000040)
331	/** The object has invalid pages. */
332	#define OBJINVALID UINT32_C(0x00000080)
333	/** Non-permanent, link386 bug. */
334	#define LNKNONPERM UINT32_C(0x00000600)
335	/** Non-permanent, correct 'value'. */
336	#define OBJNONPERM UINT32_C(0x00000000)
337	/** Obj Type: The object is permanent and swappable. */
338	#define OBJPERM UINT32_C(0x00000100)
339	/** Obj Type: The object is permanent and resident (i.e. not swappable). */
340	#define OBJRESIDENT UINT32_C(0x00000200)
341	/** Obj Type: The object is resident and contigious. */
342	#define OBJCONTIG UINT32_C(0x00000300)
343	/** Obj Type: The object is permanent and long locable. */
344	#define OBJDYNAMIC UINT32_C(0x00000400)
345	/** Object type mask. */
346	#define OBJTYPEMASK UINT32_C(0x00000700)
347	/** x86: The object require an 16:16 alias. */
348	#define OBJALIAS16 UINT32_C(0x00001000)
349	/** x86: Big/Default selector setting, i.e. toggle 32-bit or 16-bit. */
350	#define OBJBIGDEF UINT32_C(0x00002000)
351	/** x86: conforming selector setting (weird stuff). */
352	#define OBJCONFORM UINT32_C(0x00004000)
353	/** x86: IOPL. */
354	#define OBJIOPL UINT32_C(0x00008000)
355	/** @} */
356
357	/** A Object Page Map Entry. */
358	typedef struct o32_map
359	{
360	/** The file offset of the page. */
361	uint32_t o32_pagedataoffset;
362	/** The number of bytes of raw page data. */
363	uint16_t o32_pagesize;
364	/** Per page flags describing how the page is encoded in the file. */
365	uint16_t o32_pageflags;
366	} o32_map;
367	AssertCompileSize(o32_map, 8);
368
369	/** @name o32 o32_pageflags
370	* @{
371	*/
372	/** Raw page (uncompressed) in the file. */
373	#define VALID UINT16_C(0x0000)
374	/** RLE encoded page in file. */
375	#define ITERDATA UINT16_C(0x0001)
376	/** Invalid page, nothing in the file. */
377	#define INVALID UINT16_C(0x0002)
378	/** Zero page, nothing in file. */
379	#define ZEROED UINT16_C(0x0003)
380	/** range of pages (what is this?) */
381	#define RANGE UINT16_C(0x0004)
382	/** Compressed page in file. */
383	#define ITERDATA2 UINT16_C(0x0005)
384	/** @} */
385
386
387	/** Iteration Record format (RLE compressed page). */
388	#pragma pack(1)
389	typedef struct LX_Iter
390	{
391	/** Number of iterations. */
392	uint16_t LX_nIter;
393	/** The number of bytes that's being iterated. */
394	uint16_t LX_nBytes;
395	/** The bytes. */
396	uint8_t LX_Iterdata;
397	} LX_Iter;
398	#pragma pack()
399	AssertCompileSize(LX_Iter, 5);
400
401	/** @} */
402
403
404	/** A Resource Table Entry */
405	#pragma pack(1)
406	typedef struct rsrc32
407	{
408	/** Resource Type. */
409	uint16_t type;
410	/** Resource ID. */
411	uint16_t name;
412	/** Resource size in bytes. */
413	uint32_t cb;
414	/** The index of the object containing the resource. */
415	uint16_t obj;
416	/** Offset of the resource that within the object. */
417	uint32_t offset;
418	} rsrc32;
419	#pragma pack()
420	AssertCompileSize(rsrc32, 14);
421
422
423	/** @defgroup grp_rt_formats_lx_entry_tab The Entry Table (aka Export Table)
424	* @{ */
425
426	/** Entry bundle.
427	* Header descripting up to 255 entries that follows immediatly after this structure. */
428	typedef struct b32_bundle
429	{
430	/** The number of entries. */
431	uint8_t b32_cnt;
432	/** The type of bundle. */
433	uint8_t b32_type;
434	/** The index of the object containing these entry points. */
435	uint16_t b32_obj;
436	} b32_bundle;
437	AssertCompileSize(b32_bundle, 4);
438
439	/** @name b32_type
440	* @{ */
441	/** Empty bundle, filling up unused ranges of ordinals. */
442	#define EMPTY 0x00
443	/** 16-bit offset entry point. */
444	#define ENTRY16 0x01
445	/** 16-bit callgate entry point. */
446	#define GATE16 0x02
447	/** 32-bit offset entry point. */
448	#define ENTRY32 0x03
449	/** Forwarder entry point. */
450	#define ENTRYFWD 0x04
451	/** Typing information present indicator. */
452	#define TYPEINFO 0x80
453	/** @} */
454
455
456	/** Entry point. */
457	#pragma pack(1)
458	typedef struct e32_entry
459	{
460	/** Entry point flags */
461	uint8_t e32_flags; /* Entry point flags */
462	union entrykind
463	{
464	/** ENTRY16 or ENTRY32. */
465	r32_offset e32_offset;
466	/** GATE16 */
467	struct scallgate
468	{
469	/** Offset into segment. */
470	uint16_t offset;
471	/** The callgate selector */
472	uint16_t callgate;
473	} e32_callgate;
474	/** ENTRYFWD */
475	struct fwd
476	{
477	/** Module ordinal number (i.e. into the import module table). */
478	uint16_t modord;
479	/** Procedure name or ordinal number. */
480	uint32_t value;
481	} e32_fwd;
482	} e32_variant;
483	} e32_entry;
484	#pragma pack()
485
486	/** @name e32_flags
487	* @{ */
488	/** Exported entry (set) or private entry (clear). */
489	#define E32EXPORT 0x01
490	/** Uses shared data. */
491	#define E32SHARED 0x02
492	/** Parameter word count mask. */
493	#define E32PARAMS 0xf8
494	/** ENTRYFWD: Imported by ordinal (set) or by name (clear). */
495	#define FWD_ORDINAL 0x01
496	/** @} */
497
498	/** @name dunno
499	* @{ */
500	#define FIXENT16 3
501	#define FIXENT32 5
502	#define GATEENT16 5
503	#define FWDENT 7
504	/** @} */
505
506	/** @} */
507	RT_C_DECLS_END
508
509	#endif /* !IPRT_INCLUDED_formats_lx_h */
510

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