MakeAlternativeSource.cpp@ 62284

Last change on this file since 62284 was 62120, checked in by vboxsync, 9 years ago
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1	/* $Id: MakeAlternativeSource.cpp 62120 2016-07-07 16:58:51Z vboxsync $ */
2	/** @file
3	* MakeAlternative - Generate an Alternative BIOS Source that requires less tools.
4	*/
5
6	/*
7	* Copyright (C) 2012-2015 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
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#include <iprt/asm.h>
23	#include <iprt/buildconfig.h>
24	#include <iprt/ctype.h>
25	#include <iprt/dbg.h>
26	#include <iprt/file.h>
27	#include <iprt/getopt.h>
28	#include <iprt/initterm.h>
29	#include <iprt/list.h>
30	#include <iprt/mem.h>
31	#include <iprt/message.h>
32	#include <iprt/string.h>
33	#include <iprt/stream.h>
34	#include <iprt/x86.h>
35
36	#include <VBox/dis.h>
37
38
39	/*********************************************************************************************************************************
40	* Structures and Typedefs *
41	*********************************************************************************************************************************/
42	/**
43	* A BIOS segment.
44	*/
45	typedef struct BIOSSEG
46	{
47	char szName[32];
48	char szClass[32];
49	char szGroup[32];
50	RTFAR16 Address;
51	uint32_t uFlatAddr;
52	uint32_t cb;
53	} BIOSSEG;
54	/** Pointer to a BIOS segment. */
55	typedef BIOSSEG *PBIOSSEG;
56
57
58	/**
59	* A BIOS object file.
60	*/
61	typedef struct BIOSOBJFILE
62	{
63	RTLISTNODE Node;
64	char *pszSource;
65	char *pszObject;
66	} BIOSOBJFILE;
67	/** A BIOS object file. */
68	typedef BIOSOBJFILE *PBIOSOBJFILE;
69
70
71	/**
72	* Pointer to a BIOS map parser handle.
73	*/
74	typedef struct BIOSMAP
75	{
76	/** The stream pointer. */
77	PRTSTREAM hStrm;
78	/** The file name. */
79	const char *pszMapFile;
80	/** Set when EOF has been reached. */
81	bool fEof;
82	/** The current line number (0 based).*/
83	uint32_t iLine;
84	/** The length of the current line. */
85	uint32_t cch;
86	/** The offset of the first non-white character on the line. */
87	uint32_t offNW;
88	/** The line buffer. */
89	char szLine[16384];
90	} BIOSMAP;
91	/** Pointer to a BIOS map parser handle. */
92	typedef BIOSMAP *PBIOSMAP;
93
94
95	/*********************************************************************************************************************************
96	* Global Variables *
97	*********************************************************************************************************************************/
98	/** The verbosity level.*/
99	static unsigned g_cVerbose = 1 /0/;
100	/** Pointer to the BIOS image. */
101	static uint8_t const *g_pbImg;
102	/** The size of the BIOS image. */
103	static size_t g_cbImg;
104
105	/** Debug module for the map file. */
106	static RTDBGMOD g_hMapMod = NIL_RTDBGMOD;
107	/** The number of BIOS segments found in the map file. */
108	static uint32_t g_cSegs = 0;
109	/** Array of BIOS segments from the map file. */
110	static BIOSSEG g_aSegs[32];
111	/** List of BIOSOBJFILE. */
112	static RTLISTANCHOR g_ObjList;
113
114	/** The output stream. */
115	static PRTSTREAM g_hStrmOutput = NULL;
116
117	/** The type of BIOS we're working on. */
118	static enum BIOSTYPE
119	{
120	kBiosType_System = 0,
121	kBiosType_Vga
122	} g_enmBiosType = kBiosType_System;
123	/** The flat ROM base address. */
124	static uint32_t g_uBiosFlatBase = 0xf0000;
125
126
127	static bool outputPrintfV(const char *pszFormat, va_list va)
128	{
129	int rc = RTStrmPrintfV(g_hStrmOutput, pszFormat, va);
130	if (RT_FAILURE(rc))
131	{
132	RTMsgError("Output error: %Rrc\n", rc);
133	return false;
134	}
135	return true;
136	}
137
138
139	static bool outputPrintf(const char *pszFormat, ...)
140	{
141	va_list va;
142	va_start(va, pszFormat);
143	bool fRc = outputPrintfV(pszFormat, va);
144	va_end(va);
145	return fRc;
146	}
147
148
149	/**
150	* Opens the output file for writing.
151	*
152	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
153	* @param pszOutput Path to the output file.
154	*/
155	static RTEXITCODE OpenOutputFile(const char *pszOutput)
156	{
157	if (!pszOutput)
158	g_hStrmOutput = g_pStdOut;
159	else
160	{
161	int rc = RTStrmOpen(pszOutput, "w", &g_hStrmOutput);
162	if (RT_FAILURE(rc))
163	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Failed to open output file '%s': %Rrc", pszOutput, rc);
164	}
165	return RTEXITCODE_SUCCESS;
166	}
167
168
169	/**
170	* Displays a disassembly error and returns @c false.
171	*
172	* @returns @c false.
173	* @param pszFormat The error format string.
174	* @param ... Format argument.
175	*/
176	static bool disError(const char *pszFormat, ...)
177	{
178	va_list va;
179	va_start(va, pszFormat);
180	RTMsgErrorV(pszFormat, va);
181	va_end(va);
182	return false;
183	}
184
185
186	/**
187	* Output the disassembly file header.
188	*
189	* @returns @c true on success,
190	*/
191	static bool disFileHeader(void)
192	{
193	bool fRc;
194	fRc = outputPrintf("; $Id: MakeAlternativeSource.cpp 62120 2016-07-07 16:58:51Z vboxsync $ \n"
195	";; @file\n"
196	"; Auto Generated source file. Do not edit.\n"
197	";\n"
198	);
199	if (!fRc)
200	return fRc;
201
202	/*
203	* List the header of each source file, up to and including the
204	* copyright notice.
205	*/
206	bool fNeedLgplDisclaimer = false;
207	PBIOSOBJFILE pObjFile;
208	RTListForEach(&g_ObjList, pObjFile, BIOSOBJFILE, Node)
209	{
210	PRTSTREAM hStrm;
211	int rc = RTStrmOpen(pObjFile->pszSource, "r", &hStrm);
212	if (RT_SUCCESS(rc))
213	{
214	fRc = outputPrintf("\n"
215	";\n"
216	"; Source file: %Rbn\n"
217	";\n"
218	, pObjFile->pszSource);
219	uint32_t iLine = 0;
220	bool fSeenCopyright = false;
221	char szLine[4096];
222	while ((rc = RTStrmGetLine(hStrm, szLine, sizeof(szLine))) == VINF_SUCCESS)
223	{
224	iLine++;
225
226	/* Check if we're done. */
227	char *psz = RTStrStrip(szLine);
228	if ( fSeenCopyright
229	&& ( (psz[0] == '*' && psz[1] == '/')
230	\|\| psz[0] == '\0') )
231	break;
232
233	/* Strip comment suffix. */
234	size_t cch = strlen(psz);
235	if (cch >= 2 && psz[cch - 1] == '/' && psz[cch - 2] == '*')
236	{
237	psz[cch - 2] = '\0';
238	RTStrStripR(psz);
239	}
240
241	/* Skip line prefix. */
242	if (psz[0] == '/' && psz[1] == '*')
243	psz += 2;
244	else if (psz[0] == '*')
245	psz += 1;
246	else
247	while (*psz == ';')
248	psz++;
249	if (RT_C_IS_SPACE(*psz))
250	psz++;
251
252	/* Skip the doxygen file tag line. */
253	if (!strcmp(psz, "* @file") \|\| !strcmp(psz, "@file"))
254	continue;
255
256	/* Detect copyright section. */
257	if ( !fSeenCopyright
258	&& ( strstr(psz, "Copyright")
259	\|\| strstr(psz, "copyright")) )
260	fSeenCopyright = true;
261
262	/* Detect LGPL. */
263	if (strstr(psz, "LGPL"))
264	fNeedLgplDisclaimer = true;
265
266	fRc = outputPrintf("; %s\n", psz) && fRc;
267	}
268
269	RTStrmClose(hStrm);
270	if (rc != VINF_SUCCESS)
271	return disError("Error reading '%s': rc=%Rrc iLine=%u", pObjFile->pszSource, rc, iLine);
272	}
273	}
274
275	/*
276	* Add Oracle LGPL disclaimer.
277	*/
278	if (fNeedLgplDisclaimer)
279	outputPrintf("\n"
280	";\n"
281	"; Oracle LGPL Disclaimer: For the avoidance of doubt, except that if any license choice\n"
282	"; other than GPL or LGPL is available it will apply instead, Oracle elects to use only\n"
283	"; the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where\n"
284	"; a choice of LGPL license versions is made available with the language indicating\n"
285	"; that LGPLv2 or any later version may be used, or where a choice of which version\n"
286	"; of the LGPL is applied is otherwise unspecified.\n"
287	";\n"
288	"\n");
289
290	/*
291	* Set the org.
292	*/
293	fRc = outputPrintf("\n"
294	"\n"
295	"\n"
296	) && fRc;
297	return fRc;
298	}
299
300
301	/**
302	* Checks if a byte sequence could be a string litteral.
303	*
304	* @returns @c true if it is, @c false if it isn't.
305	* @param uFlatAddr The address of the byte sequence.
306	* @param cb The length of the sequence.
307	*/
308	static bool disIsString(uint32_t uFlatAddr, uint32_t cb)
309	{
310	if (cb < 6)
311	return false;
312
313	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
314	while (cb > 0)
315	{
316	if ( !RT_C_IS_PRINT(*pb)
317	&& *pb != '\r'
318	&& *pb != '\n'
319	&& *pb != '\t')
320	{
321	if (*pb == '\0')
322	{
323	do
324	{
325	pb++;
326	cb--;
327	} while (cb > 0 && *pb == '\0');
328	return cb == 0;
329	}
330	return false;
331	}
332	pb++;
333	cb--;
334	}
335
336	return true;
337	}
338
339
340	/**
341	* Checks if a dword could be a far 16:16 BIOS address.
342	*
343	* @returns @c true if it is, @c false if it isn't.
344	* @param uFlatAddr The address of the dword.
345	*/
346	static bool disIsFarBiosAddr(uint32_t uFlatAddr)
347	{
348	uint16_t const pu16 = (uint16_t const )&g_pbImg[uFlatAddr - g_uBiosFlatBase];
349	if (pu16[1] < 0xf000)
350	return false;
351	if (pu16[1] > 0xfff0)
352	return false;
353	uint32_t uFlatAddr2 = (uint32_t)(pu16[1] << 4) \| pu16[0];
354	if (uFlatAddr2 >= g_uBiosFlatBase + g_cbImg)
355	return false;
356	return true;
357	}
358
359
360	static bool disByteData(uint32_t uFlatAddr, uint32_t cb)
361	{
362	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
363	size_t cbOnLine = 0;
364	while (cb-- > 0)
365	{
366	bool fRc;
367	if (cbOnLine >= 16)
368	{
369	fRc = outputPrintf("\n"
370	" db 0%02xh", *pb);
371	cbOnLine = 1;
372	}
373	else if (!cbOnLine)
374	{
375	fRc = outputPrintf(" db 0%02xh", *pb);
376	cbOnLine = 1;
377	}
378	else
379	{
380	fRc = outputPrintf(", 0%02xh", *pb);
381	cbOnLine++;
382	}
383	if (!fRc)
384	return false;
385	pb++;
386	}
387	return outputPrintf("\n");
388	}
389
390
391	static bool disWordData(uint32_t uFlatAddr, uint32_t cb)
392	{
393	if (cb & 1)
394	return disError("disWordData expects word aligned size: cb=%#x uFlatAddr=%#x", uFlatAddr, cb);
395
396	uint16_t const pu16 = (uint16_t const )&g_pbImg[uFlatAddr - g_uBiosFlatBase];
397	size_t cbOnLine = 0;
398	while (cb > 0)
399	{
400	bool fRc;
401	if (cbOnLine >= 16)
402	{
403	fRc = outputPrintf("\n"
404	" dw 0%04xh", *pu16);
405	cbOnLine = 2;
406	}
407	else if (!cbOnLine)
408	{
409	fRc = outputPrintf(" dw 0%04xh", *pu16);
410	cbOnLine = 2;
411	}
412	else
413	{
414	fRc = outputPrintf(", 0%04xh", *pu16);
415	cbOnLine += 2;
416	}
417	if (!fRc)
418	return false;
419	pu16++;
420	cb -= 2;
421	}
422	return outputPrintf("\n");
423	}
424
425
426	static bool disDWordData(uint32_t uFlatAddr, uint32_t cb)
427	{
428	if (cb & 3)
429	return disError("disWordData expects dword aligned size: cb=%#x uFlatAddr=%#x", uFlatAddr, cb);
430
431	uint32_t const pu32 = (uint32_t const )&g_pbImg[uFlatAddr - g_uBiosFlatBase];
432	size_t cbOnLine = 0;
433	while (cb > 0)
434	{
435	bool fRc;
436	if (cbOnLine >= 16)
437	{
438	fRc = outputPrintf("\n"
439	" dd 0%08xh", *pu32);
440	cbOnLine = 4;
441	}
442	else if (!cbOnLine)
443	{
444	fRc = outputPrintf(" dd 0%08xh", *pu32);
445	cbOnLine = 4;
446	}
447	else
448	{
449	fRc = outputPrintf(", 0%08xh", *pu32);
450	cbOnLine += 4;
451	}
452	if (!fRc)
453	return false;
454	pu32++;
455	cb -= 4;
456	}
457	return outputPrintf("\n");
458	}
459
460
461	static bool disStringData(uint32_t uFlatAddr, uint32_t cb)
462	{
463	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
464	uint32_t cchOnLine = 0;
465	while (cb > 0)
466	{
467	/* Line endings and beginnings. */
468	if (cchOnLine >= 72)
469	{
470	if (!outputPrintf("\n"))
471	return false;
472	cchOnLine = 0;
473	}
474	if ( !cchOnLine
475	&& !outputPrintf(" db "))
476	return false;
477
478	/* See how many printable character we've got. */
479	uint32_t cchPrintable = 0;
480	while ( cchPrintable < cb
481	&& RT_C_IS_PRINT(pb[cchPrintable])
482	&& pb[cchPrintable] != '\'')
483	cchPrintable++;
484
485	bool fRc = true;
486	if (cchPrintable)
487	{
488	if (cchPrintable + cchOnLine > 72)
489	cchPrintable = 72 - cchOnLine;
490	if (cchOnLine)
491	{
492	fRc = outputPrintf(", '%.*s'", cchPrintable, pb);
493	cchOnLine += 4 + cchPrintable;
494	}
495	else
496	{
497	fRc = outputPrintf("'%.*s'", cchPrintable, pb);
498	cchOnLine += 2 + cchPrintable;
499	}
500	pb += cchPrintable;
501	cb -= cchPrintable;
502	}
503	else
504	{
505	if (cchOnLine)
506	{
507	fRc = outputPrintf(", 0%02xh", *pb);
508	cchOnLine += 6;
509	}
510	else
511	{
512	fRc = outputPrintf("0%02xh", *pb);
513	cchOnLine += 4;
514	}
515	pb++;
516	cb--;
517	}
518	if (!fRc)
519	return false;
520	}
521	return outputPrintf("\n");
522	}
523
524
525	/**
526	* For dumping a portion of a string table.
527	*
528	* @returns @c true on success, @c false on failure.
529	* @param uFlatAddr The start address.
530	* @param cb The size of the string table.
531	*/
532	static bool disStringsData(uint32_t uFlatAddr, uint32_t cb)
533	{
534	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
535	uint32_t cchOnLine = 0;
536	uint8_t bPrev = 255;
537	while (cb > 0)
538	{
539	/* Line endings and beginnings. */
540	if ( cchOnLine >= 72
541	\|\| (bPrev == '\0' && *pb != '\0'))
542	{
543	if (!outputPrintf("\n"))
544	return false;
545	cchOnLine = 0;
546	}
547	if ( !cchOnLine
548	&& !outputPrintf(" db "))
549	return false;
550
551	/* See how many printable character we've got. */
552	uint32_t cchPrintable = 0;
553	while ( cchPrintable < cb
554	&& RT_C_IS_PRINT(pb[cchPrintable])
555	&& pb[cchPrintable] != '\'')
556	cchPrintable++;
557
558	bool fRc = true;
559	if (cchPrintable)
560	{
561	if (cchPrintable + cchOnLine > 72)
562	cchPrintable = 72 - cchOnLine;
563	if (cchOnLine)
564	{
565	fRc = outputPrintf(", '%.*s'", cchPrintable, pb);
566	cchOnLine += 4 + cchPrintable;
567	}
568	else
569	{
570	fRc = outputPrintf("'%.*s'", cchPrintable, pb);
571	cchOnLine += 2 + cchPrintable;
572	}
573	pb += cchPrintable;
574	cb -= cchPrintable;
575	}
576	else
577	{
578	if (cchOnLine)
579	{
580	fRc = outputPrintf(", 0%02xh", *pb);
581	cchOnLine += 6;
582	}
583	else
584	{
585	fRc = outputPrintf("0%02xh", *pb);
586	cchOnLine += 4;
587	}
588	pb++;
589	cb--;
590	}
591	if (!fRc)
592	return false;
593	bPrev = pb[-1];
594	}
595	return outputPrintf("\n");
596	}
597
598
599	/**
600	* Minds the gap between two segments.
601	*
602	* Gaps should generally be zero filled.
603	*
604	* @returns @c true on success, @c false on failure.
605	* @param uFlatAddr The address of the gap.
606	* @param cbPadding The size of the gap.
607	*/
608	static bool disCopySegmentGap(uint32_t uFlatAddr, uint32_t cbPadding)
609	{
610	if (g_cVerbose > 0)
611	outputPrintf("\n"
612	" ; Padding %#x bytes at %#x\n", cbPadding, uFlatAddr);
613	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
614	if (ASMMemIsZero(pb, cbPadding))
615	return outputPrintf(" times %u db 0\n", cbPadding);
616
617	return disByteData(uFlatAddr, cbPadding);
618	}
619
620
621	/**
622	* Worker for disGetNextSymbol that only does the looking up, no RTDBSYMBOL::cb
623	* calc.
624	*
625	* @param uFlatAddr The address to start searching at.
626	* @param cbMax The size of the search range.
627	* @param poff Where to return the offset between the symbol
628	* and @a uFlatAddr.
629	* @param pSym Where to return the symbol data.
630	*/
631	static void disGetNextSymbolWorker(uint32_t uFlatAddr, uint32_t cbMax, uint32_t *poff, PRTDBGSYMBOL pSym)
632	{
633	RTINTPTR off = 0;
634	int rc = RTDbgModSymbolByAddr(g_hMapMod, RTDBGSEGIDX_RVA, uFlatAddr, RTDBGSYMADDR_FLAGS_GREATER_OR_EQUAL, &off, pSym);
635	if (RT_SUCCESS(rc))
636	{
637	/* negative offset, indicates beyond. */
638	if (off <= 0)
639	{
640	*poff = (uint32_t)-off;
641	return;
642	}
643
644	outputPrintf(" ; !! RTDbgModSymbolByAddr(,,%#x,,) -> off=%RTptr cb=%RTptr uValue=%RTptr '%s'\n",
645	uFlatAddr, off, pSym->cb, pSym->Value, pSym->szName);
646	}
647	else if (rc != VERR_SYMBOL_NOT_FOUND)
648	outputPrintf(" ; !! RTDbgModSymbolByAddr(,,%#x,,) -> %Rrc\n", uFlatAddr, rc);
649
650	RTStrPrintf(pSym->szName, sizeof(pSym->szName), "_dummy_addr_%#x", uFlatAddr + cbMax);
651	pSym->Value = uFlatAddr + cbMax;
652	pSym->cb = 0;
653	pSym->offSeg = uFlatAddr + cbMax;
654	pSym->iSeg = RTDBGSEGIDX_RVA;
655	pSym->iOrdinal = 0;
656	pSym->fFlags = 0;
657	*poff = cbMax;
658	}
659
660
661	/**
662	* Gets the symbol at or after the given address.
663	*
664	* If there are no symbols in the specified range, @a pSym and @a poff will be
665	* set up to indicate a symbol at the first byte after the range.
666	*
667	* @param uFlatAddr The address to start searching at.
668	* @param cbMax The size of the search range.
669	* @param poff Where to return the offset between the symbol
670	* and @a uFlatAddr.
671	* @param pSym Where to return the symbol data.
672	*/
673	static void disGetNextSymbol(uint32_t uFlatAddr, uint32_t cbMax, uint32_t *poff, PRTDBGSYMBOL pSym)
674	{
675	disGetNextSymbolWorker(uFlatAddr, cbMax, poff, pSym);
676	if ( *poff < cbMax
677	&& pSym->cb == 0)
678	{
679	if (*poff + 1 < cbMax)
680	{
681	uint32_t off2;
682	RTDBGSYMBOL Sym2;
683	disGetNextSymbolWorker(uFlatAddr + poff + 1, cbMax - poff - 1, &off2, &Sym2);
684	pSym->cb = off2 + 1;
685	}
686	else
687	pSym->cb = 1;
688	}
689	if (pSym->cb > cbMax - *poff)
690	pSym->cb = cbMax - *poff;
691
692	if (g_cVerbose > 1)
693	outputPrintf(" ; disGetNextSymbol %#x LB %#x -> off=%#x cb=%RTptr uValue=%RTptr '%s'\n",
694	uFlatAddr, cbMax, *poff, pSym->cb, pSym->Value, pSym->szName);
695
696	}
697
698
699	/**
700	* For dealing with the const segment (string constants).
701	*
702	* @returns @c true on success, @c false on failure.
703	* @param iSeg The segment.
704	*/
705	static bool disConstSegment(uint32_t iSeg)
706	{
707	uint32_t uFlatAddr = g_aSegs[iSeg].uFlatAddr;
708	uint32_t cb = g_aSegs[iSeg].cb;
709
710	while (cb > 0)
711	{
712	uint32_t off;
713	RTDBGSYMBOL Sym;
714	disGetNextSymbol(uFlatAddr, cb, &off, &Sym);
715
716	if (off > 0)
717	{
718	if (!disStringsData(uFlatAddr, off))
719	return false;
720	cb -= off;
721	uFlatAddr += off;
722	off = 0;
723	if (!cb)
724	break;
725	}
726
727	bool fRc;
728	if (off == 0)
729	{
730	size_t cchName = strlen(Sym.szName);
731	fRc = outputPrintf("%s: %*s; %#x LB %#x\n", Sym.szName, cchName < 41 - 2 ? cchName - 41 - 2 : 0, "", uFlatAddr, Sym.cb);
732	if (!fRc)
733	return false;
734	fRc = disStringsData(uFlatAddr, Sym.cb);
735	uFlatAddr += Sym.cb;
736	cb -= Sym.cb;
737	}
738	else
739	{
740	fRc = disStringsData(uFlatAddr, Sym.cb);
741	uFlatAddr += cb;
742	cb = 0;
743	}
744	if (!fRc)
745	return false;
746	}
747
748	return true;
749	}
750
751
752
753	static bool disDataSegment(uint32_t iSeg)
754	{
755	uint32_t uFlatAddr = g_aSegs[iSeg].uFlatAddr;
756	uint32_t cb = g_aSegs[iSeg].cb;
757
758	while (cb > 0)
759	{
760	uint32_t off;
761	RTDBGSYMBOL Sym;
762	disGetNextSymbol(uFlatAddr, cb, &off, &Sym);
763
764	if (off > 0)
765	{
766	if (!disByteData(uFlatAddr, off))
767	return false;
768	cb -= off;
769	uFlatAddr += off;
770	off = 0;
771	if (!cb)
772	break;
773	}
774
775	bool fRc;
776	if (off == 0)
777	{
778	size_t cchName = strlen(Sym.szName);
779	fRc = outputPrintf("%s: %*s; %#x LB %#x\n", Sym.szName, cchName < 41 - 2 ? cchName - 41 - 2 : 0, "", uFlatAddr, Sym.cb);
780	if (!fRc)
781	return false;
782
783	if (Sym.cb == 2)
784	fRc = disWordData(uFlatAddr, 2);
785	//else if (Sym.cb == 4 && disIsFarBiosAddr(uFlatAddr))
786	// fRc = disDWordData(uFlatAddr, 4);
787	else if (Sym.cb == 4)
788	fRc = disDWordData(uFlatAddr, 4);
789	else if (disIsString(uFlatAddr, Sym.cb))
790	fRc = disStringData(uFlatAddr, Sym.cb);
791	else
792	fRc = disByteData(uFlatAddr, Sym.cb);
793
794	uFlatAddr += Sym.cb;
795	cb -= Sym.cb;
796	}
797	else
798	{
799	fRc = disByteData(uFlatAddr, cb);
800	uFlatAddr += cb;
801	cb = 0;
802	}
803	if (!fRc)
804	return false;
805	}
806
807	return true;
808	}
809
810
811	static bool disIsCodeAndAdjustSize(uint32_t uFlatAddr, PRTDBGSYMBOL pSym, PBIOSSEG pSeg)
812	{
813	switch (g_enmBiosType)
814	{
815	/*
816	* This is for the PC BIOS.
817	*/
818	case kBiosType_System:
819	if (!strcmp(pSeg->szName, "BIOSSEG"))
820	{
821	if ( !strcmp(pSym->szName, "rom_fdpt")
822	\|\| !strcmp(pSym->szName, "pmbios_gdt")
823	\|\| !strcmp(pSym->szName, "pmbios_gdt_desc")
824	\|\| !strcmp(pSym->szName, "_pmode_IDT")
825	\|\| !strcmp(pSym->szName, "_rmode_IDT")
826	\|\| !strncmp(pSym->szName, RT_STR_TUPLE("font"))
827	\|\| !strcmp(pSym->szName, "bios_string")
828	\|\| !strcmp(pSym->szName, "vector_table")
829	\|\| !strcmp(pSym->szName, "pci_routing_table_structure")
830	\|\| !strcmp(pSym->szName, "_pci_routing_table")
831	)
832	return false;
833	}
834
835	if (!strcmp(pSym->szName, "cpu_reset"))
836	pSym->cb = RT_MIN(pSym->cb, 5);
837	else if (!strcmp(pSym->szName, "pci_init_end"))
838	pSym->cb = RT_MIN(pSym->cb, 3);
839	break;
840
841	/*
842	* This is for the VGA BIOS.
843	*/
844	case kBiosType_Vga:
845	break;
846	}
847
848	return true;
849	}
850
851
852	static bool disIs16BitCode(const char *pszSymbol)
853	{
854	return true;
855	}
856
857
858	/**
859	* Deals with instructions that YASM will assemble differently than WASM/WCC.
860	*/
861	static size_t disHandleYasmDifferences(PDISCPUSTATE pCpuState, uint32_t uFlatAddr, uint32_t cbInstr,
862	char *pszBuf, size_t cbBuf, size_t cchUsed)
863	{
864	bool fDifferent = DISFormatYasmIsOddEncoding(pCpuState);
865	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
866
867	/*
868	* Disassembler bugs.
869	*/
870	/** @todo Group 1a and 11 seems to be disassembled incorrectly when
871	* modrm.reg != 0. Those encodings should be invalid AFAICT. */
872
873	if ( ( pCpuState->bOpCode == 0x8f /* group 1a */
874	\|\| pCpuState->bOpCode == 0xc7 /* group 11 */
875	\|\| pCpuState->bOpCode == 0xc6 /* group 11 - not verified */
876	)
877	&& pCpuState->ModRM.Bits.Reg != 0)
878	fDifferent = true;
879	/*
880	* Check these out and consider adding them to DISFormatYasmIsOddEncoding.
881	*/
882	else if ( pb[0] == 0xf3
883	&& pb[1] == 0x66
884	&& pb[2] == 0x6d)
885	fDifferent = true; /* rep insd - prefix switched. */
886	else if ( pb[0] == 0xc6
887	&& pb[1] == 0xc5
888	&& pb[2] == 0xba)
889	fDifferent = true; /* mov ch, 0bah - yasm uses a short sequence: 0xb5 0xba. */
890
891	/*
892	* 32-bit retf.
893	*/
894	else if ( pb[0] == 0x66
895	&& pb[1] == 0xcb)
896	fDifferent = true;
897
898	/*
899	* Handle different stuff.
900	*/
901	if (fDifferent)
902	{
903	disByteData(uFlatAddr, cbInstr); /* lazy bird. */
904
905	if (cchUsed + 2 < cbBuf)
906	{
907	memmove(pszBuf + 2, pszBuf, cchUsed + 1); /* include terminating \0 */
908	cchUsed += 2;
909	}
910
911	pszBuf[0] = ';';
912	pszBuf[1] = ' ';
913	}
914
915	return cchUsed;
916	}
917
918
919	/**
920	* @callback_method_impl{FNDISREADBYTES}
921	*
922	* @remarks @a uSrcAddr is the flat address.
923	*/
924	static DECLCALLBACK(int) disReadOpcodeBytes(PDISCPUSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead)
925	{
926	RTUINTPTR offBios = pDis->uInstrAddr + offInstr - g_uBiosFlatBase;
927	size_t cbToRead = cbMaxRead;
928	if (offBios + cbToRead > g_cbImg)
929	{
930	if (offBios >= g_cbImg)
931	cbToRead = 0;
932	else
933	cbToRead = g_cbImg - offBios;
934	}
935	memcpy(&pDis->abInstr[offInstr], &g_pbImg[offBios], cbToRead);
936	pDis->cbCachedInstr = (uint8_t)(offInstr + cbToRead);
937	return VINF_SUCCESS;
938	}
939
940
941	/**
942	* Disassembles code.
943	*
944	* @returns @c true on success, @c false on failure.
945	* @param uFlatAddr The address where the code starts.
946	* @param cb The amount of code to disassemble.
947	* @param fIs16Bit Is is 16-bit (@c true) or 32-bit (@c false).
948	*/
949	static bool disCode(uint32_t uFlatAddr, uint32_t cb, bool fIs16Bit)
950	{
951	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
952
953	while (cb > 0)
954	{
955	/* Trailing zero padding detection. */
956	if ( *pb == '\0'
957	&& ASMMemIsZero(pb, RT_MIN(cb, 8)))
958	{
959	void *pv = ASMMemFirstNonZero(pb, cb);
960	uint32_t cbZeros = pv ? (uint32_t)((uint8_t const *)pv - pb) : cb;
961	if (!outputPrintf(" times %#x db 0\n", cbZeros))
962	return false;
963	cb -= cbZeros;
964	pb += cbZeros;
965	uFlatAddr += cbZeros;
966	if ( cb == 2
967	&& pb[0] == 'X'
968	&& pb[1] == 'M')
969	return disStringData(uFlatAddr, cb);
970	}
971	/* Work arounds for switch tables and such (disas assertions). */
972	else if ( 0
973	\|\| ( pb[0] == 0x50 /* int13_cdemu switch */
974	&& pb[1] == 0x4e
975	&& pb[2] == 0x49
976	&& pb[3] == 0x48
977	&& pb[4] == 0x47
978	)
979	\|\| ( pb[0] == 0x67 /* _pci16_function switch */
980	&& pb[1] == 0x92
981	&& pb[2] == 0x81
982	&& pb[3] == 0x92
983	&& pb[4] == 0x94
984	&& pb[5] == 0x92
985	)
986	\|\| ( pb[0] == 0xa3 /* _int1a_function switch */
987	&& pb[1] == 0x67
988	&& pb[2] == 0xca
989	&& pb[3] == 0x67
990	&& pb[4] == 0xef
991	&& pb[5] == 0x67
992	)
993	\|\| ( pb[0] == 0x0b /* _ahci_init byte table */
994	&& pb[1] == 0x05
995	&& pb[2] == 0x04
996	&& pb[3] == 0x03
997	&& pb[4] == 0x02
998	&& pb[5] == 0x01
999	)
1000	\|\| ( pb[0] == 0x00 /* bytes after apm_out_str_ */
1001	&& pb[1] == 0x00
1002	&& pb[2] == 0x00
1003	&& pb[3] == 0x00
1004	&& pb[4] == 0x00
1005	&& pb[5] == 0x00
1006	&& pb[6] == 0xe0
1007	&& pb[7] == 0xa0
1008	&& pb[8] == 0xe2
1009	&& pb[9] == 0xa0)
1010	\|\| ( pb[0] == 0xec /* _int15_function switch */
1011	&& pb[1] == 0xe9
1012	&& pb[2] == 0xd8
1013	&& pb[3] == 0xc1
1014	&& pb[4] == 0xc0
1015	&& pb[5] == 0xbf)
1016	\|\| ( pb[0] == 0x21 /* _int15_function32 switch */
1017	&& pb[1] == 0x66
1018	&& pb[2] == 0x43
1019	&& pb[3] == 0x66
1020	&& pb[4] == 0x66
1021	&& pb[5] == 0x66)
1022	\|\| 0
1023	)
1024	return disByteData(uFlatAddr, cb);
1025	else
1026	{
1027	unsigned cbInstr;
1028	DISCPUSTATE CpuState;
1029	int rc = DISInstrWithReader(uFlatAddr, fIs16Bit ? DISCPUMODE_16BIT : DISCPUMODE_32BIT,
1030	disReadOpcodeBytes, NULL, &CpuState, &cbInstr);
1031	if ( RT_SUCCESS(rc)
1032	&& cbInstr <= cb
1033	&& CpuState.pCurInstr
1034	&& CpuState.pCurInstr->uOpcode != OP_INVALID)
1035	{
1036	char szTmp[4096];
1037	size_t cch = DISFormatYasmEx(&CpuState, szTmp, sizeof(szTmp),
1038	DIS_FMT_FLAGS_STRICT
1039	\| DIS_FMT_FLAGS_BYTES_RIGHT \| DIS_FMT_FLAGS_BYTES_COMMENT \| DIS_FMT_FLAGS_BYTES_SPACED,
1040	NULL, NULL);
1041	cch = disHandleYasmDifferences(&CpuState, uFlatAddr, cbInstr, szTmp, sizeof(szTmp), cch);
1042	Assert(cch < sizeof(szTmp));
1043
1044	if (g_cVerbose > 1)
1045	{
1046	while (cch < 72)
1047	szTmp[cch++] = ' ';
1048	RTStrPrintf(&szTmp[cch], sizeof(szTmp) - cch, "; %#x", uFlatAddr);
1049	}
1050
1051	if (!outputPrintf(" %s\n", szTmp))
1052	return false;
1053	cb -= cbInstr;
1054	pb += cbInstr;
1055	uFlatAddr += cbInstr;
1056	}
1057	else
1058	{
1059	if (!disByteData(uFlatAddr, 1))
1060	return false;
1061	cb--;
1062	pb++;
1063	uFlatAddr++;
1064	}
1065	}
1066	}
1067	return true;
1068	}
1069
1070
1071	static bool disCodeSegment(uint32_t iSeg)
1072	{
1073	uint32_t uFlatAddr = g_aSegs[iSeg].uFlatAddr;
1074	uint32_t cb = g_aSegs[iSeg].cb;
1075
1076	while (cb > 0)
1077	{
1078	uint32_t off;
1079	RTDBGSYMBOL Sym;
1080	disGetNextSymbol(uFlatAddr, cb, &off, &Sym);
1081
1082	if (off > 0)
1083	{
1084	if (!disByteData(uFlatAddr, off))
1085	return false;
1086	cb -= off;
1087	uFlatAddr += off;
1088	off = 0;
1089	if (!cb)
1090	break;
1091	}
1092
1093	bool fRc;
1094	if (off == 0)
1095	{
1096	size_t cchName = strlen(Sym.szName);
1097	fRc = outputPrintf("%s: %*s; %#x LB %#x\n", Sym.szName, cchName < 41 - 2 ? cchName - 41 - 2 : 0, "", uFlatAddr, Sym.cb);
1098	if (!fRc)
1099	return false;
1100
1101	if (disIsCodeAndAdjustSize(uFlatAddr, &Sym, &g_aSegs[iSeg]))
1102	fRc = disCode(uFlatAddr, Sym.cb, disIs16BitCode(Sym.szName));
1103	else
1104	fRc = disByteData(uFlatAddr, Sym.cb);
1105
1106	uFlatAddr += Sym.cb;
1107	cb -= Sym.cb;
1108	}
1109	else
1110	{
1111	fRc = disByteData(uFlatAddr, cb);
1112	uFlatAddr += cb;
1113	cb = 0;
1114	}
1115	if (!fRc)
1116	return false;
1117	}
1118
1119	return true;
1120	}
1121
1122
1123	static RTEXITCODE DisassembleBiosImage(void)
1124	{
1125	if (!disFileHeader())
1126	return RTEXITCODE_FAILURE;
1127
1128	/*
1129	* Work the image segment by segment.
1130	*/
1131	bool fRc = true;
1132	uint32_t uFlatAddr = g_uBiosFlatBase;
1133	for (uint32_t iSeg = 0; iSeg < g_cSegs && fRc; iSeg++)
1134	{
1135	/* Is there a gap between the segments? */
1136	if (uFlatAddr < g_aSegs[iSeg].uFlatAddr)
1137	{
1138	fRc = disCopySegmentGap(uFlatAddr, g_aSegs[iSeg].uFlatAddr - uFlatAddr);
1139	if (!fRc)
1140	break;
1141	uFlatAddr = g_aSegs[iSeg].uFlatAddr;
1142	}
1143	else if (uFlatAddr > g_aSegs[iSeg].uFlatAddr)
1144	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Overlapping segments: %u and %u; uFlatAddr=%#x\n", iSeg - 1, iSeg, uFlatAddr);
1145
1146	/* Disassemble the segment. */
1147	fRc = outputPrintf("\n"
1148	"section %s progbits vstart=%#x align=1 ; size=%#x class=%s group=%s\n",
1149	g_aSegs[iSeg].szName, g_aSegs[iSeg].uFlatAddr - g_uBiosFlatBase,
1150	g_aSegs[iSeg].cb, g_aSegs[iSeg].szClass, g_aSegs[iSeg].szGroup);
1151	if (!fRc)
1152	return RTEXITCODE_FAILURE;
1153	if (!strcmp(g_aSegs[iSeg].szName, "CONST"))
1154	fRc = disConstSegment(iSeg);
1155	else if (!strcmp(g_aSegs[iSeg].szClass, "DATA"))
1156	fRc = disDataSegment(iSeg);
1157	else
1158	fRc = disCodeSegment(iSeg);
1159
1160	/* Advance. */
1161	uFlatAddr += g_aSegs[iSeg].cb;
1162	}
1163
1164	/* Final gap. */
1165	if (uFlatAddr < g_uBiosFlatBase + g_cbImg)
1166	fRc = disCopySegmentGap(uFlatAddr, (uint32_t)(g_uBiosFlatBase + g_cbImg - uFlatAddr));
1167	else if (uFlatAddr > g_uBiosFlatBase + g_cbImg)
1168	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Last segment spills beyond 1MB; uFlatAddr=%#x\n", uFlatAddr);
1169
1170	if (!fRc)
1171	return RTEXITCODE_FAILURE;
1172	return RTEXITCODE_SUCCESS;
1173	}
1174
1175
1176
1177	/**
1178	* Parses the symbol file for the BIOS.
1179	*
1180	* This is in ELF/DWARF format.
1181	*
1182	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
1183	* @param pszBiosSym Path to the sym file.
1184	*/
1185	static RTEXITCODE ParseSymFile(const char *pszBiosSym)
1186	{
1187	#if 1
1188	/** @todo use RTDbg* later. (Just checking for existance currently.) */
1189	PRTSTREAM hStrm;
1190	int rc = RTStrmOpen(pszBiosSym, "rb", &hStrm);
1191	if (RT_FAILURE(rc))
1192	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error opening '%s': %Rrc", pszBiosSym, rc);
1193	RTStrmClose(hStrm);
1194	#else
1195	RTDBGMOD hDbgMod;
1196	int rc = RTDbgModCreateFromImage(&hDbgMod, pszBiosSym, "VBoxBios", 0 /fFlags/);
1197	RTMsgInfo("RTDbgModCreateFromImage -> %Rrc\n", rc);
1198	#endif
1199	return RTEXITCODE_SUCCESS;
1200	}
1201
1202
1203	/**
1204	* Display an error with the mapfile name and current line, return false.
1205	*
1206	* @returns @c false.
1207	* @param pMap The map file handle.
1208	* @param pszFormat The format string.
1209	* @param ... Format arguments.
1210	*/
1211	static bool mapError(PBIOSMAP pMap, const char *pszFormat, ...)
1212	{
1213	va_list va;
1214	va_start(va, pszFormat);
1215	RTMsgError("%s:%d: %N", pMap->pszMapFile, pMap->iLine, pszFormat, va);
1216	va_end(va);
1217	return false;
1218	}
1219
1220
1221	/**
1222	* Reads a line from the file.
1223	*
1224	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1225	* @param pMap The map file handle.
1226	*/
1227	static bool mapReadLine(PBIOSMAP pMap)
1228	{
1229	int rc = RTStrmGetLine(pMap->hStrm, pMap->szLine, sizeof(pMap->szLine));
1230	if (RT_FAILURE(rc))
1231	{
1232	if (rc == VERR_EOF)
1233	{
1234	pMap->fEof = true;
1235	pMap->cch = 0;
1236	pMap->offNW = 0;
1237	pMap->szLine[0] = '\0';
1238	}
1239	else
1240	RTMsgError("%s:%d: Read error %Rrc", pMap->pszMapFile, pMap->iLine + 1, rc);
1241	return false;
1242	}
1243	pMap->iLine++;
1244	pMap->cch = (uint32_t)strlen(pMap->szLine);
1245
1246	/* Check out leading white space. */
1247	if (!RT_C_IS_SPACE(pMap->szLine[0]))
1248	pMap->offNW = 0;
1249	else
1250	{
1251	uint32_t off = 1;
1252	while (RT_C_IS_SPACE(pMap->szLine[off]))
1253	off++;
1254	pMap->offNW = off;
1255	}
1256
1257	return true;
1258	}
1259
1260
1261	/**
1262	* Checks if it is an empty line.
1263	* @returns @c true if empty, @c false if not.
1264	* @param pMap The map file handle.
1265	*/
1266	static bool mapIsEmptyLine(PBIOSMAP pMap)
1267	{
1268	Assert(pMap->offNW <= pMap->cch);
1269	return pMap->offNW == pMap->cch;
1270	}
1271
1272
1273	/**
1274	* Reads ahead in the map file until a non-empty line or EOF is encountered.
1275	*
1276	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1277	* @param pMap The map file handle.
1278	*/
1279	static bool mapSkipEmptyLines(PBIOSMAP pMap)
1280	{
1281	for (;;)
1282	{
1283	if (!mapReadLine(pMap))
1284	return false;
1285	if (pMap->offNW < pMap->cch)
1286	return true;
1287	}
1288	}
1289
1290
1291	/**
1292	* Reads ahead in the map file until an empty line or EOF is encountered.
1293	*
1294	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1295	* @param pMap The map file handle.
1296	*/
1297	static bool mapSkipNonEmptyLines(PBIOSMAP pMap)
1298	{
1299	for (;;)
1300	{
1301	if (!mapReadLine(pMap))
1302	return false;
1303	if (pMap->offNW == pMap->cch)
1304	return true;
1305	}
1306	}
1307
1308
1309	/**
1310	* Strips the current line.
1311	*
1312	* The string length may change.
1313	*
1314	* @returns Pointer to the first non-space character.
1315	* @param pMap The map file handle.
1316	* @param pcch Where to return the length of the unstripped
1317	* part. Optional.
1318	*/
1319	static char mapStripCurrentLine(PBIOSMAP pMap, size_t pcch)
1320	{
1321	char *psz = &pMap->szLine[pMap->offNW];
1322	char *pszEnd = &pMap->szLine[pMap->cch];
1323	while ( (uintptr_t)pszEnd > (uintptr_t)psz
1324	&& RT_C_IS_SPACE(pszEnd[-1]))
1325	{
1326	*--pszEnd = '\0';
1327	pMap->cch--;
1328	}
1329	if (pcch)
1330	*pcch = pszEnd - psz;
1331	return psz;
1332	}
1333
1334
1335	/**
1336	* Reads a line from the file and right strips it.
1337	*
1338	* @returns Pointer to szLine on success, @c NULL + msg on failure, @c NULL on
1339	* EOF.
1340	* @param pMap The map file handle.
1341	* @param pcch Where to return the length of the unstripped
1342	* part. Optional.
1343	*/
1344	static char mapReadLineStripRight(PBIOSMAP pMap, size_t pcch)
1345	{
1346	if (!mapReadLine(pMap))
1347	return NULL;
1348	mapStripCurrentLine(pMap, NULL);
1349	if (pcch)
1350	*pcch = pMap->cch;
1351	return pMap->szLine;
1352	}
1353
1354
1355	/**
1356	* mapReadLine() + mapStripCurrentLine().
1357	*
1358	* @returns Pointer to the first non-space character in the new line. NULL on
1359	* read error (bitched already) or end of file.
1360	* @param pMap The map file handle.
1361	* @param pcch Where to return the length of the unstripped
1362	* part. Optional.
1363	*/
1364	static char mapReadLineStrip(PBIOSMAP pMap, size_t pcch)
1365	{
1366	if (!mapReadLine(pMap))
1367	return NULL;
1368	return mapStripCurrentLine(pMap, pcch);
1369	}
1370
1371
1372	/**
1373	* Parses a word, copying it into the supplied buffer, and skipping any spaces
1374	* following it.
1375	*
1376	* @returns @c true on success, @c false on failure.
1377	* @param ppszCursor Pointer to the cursor variable.
1378	* @param pszBuf The output buffer.
1379	* @param cbBuf The size of the output buffer.
1380	*/
1381	static bool mapParseWord(char *ppszCursor, char pszBuf, size_t cbBuf)
1382	{
1383	/* Check that we start on a non-blank. */
1384	char pszStart = ppszCursor;
1385	if (!pszStart \|\| RT_C_IS_SPACE(pszStart))
1386	return false;
1387
1388	/* Find the end of the word. */
1389	char *psz = pszStart + 1;
1390	while (psz && !RT_C_IS_SPACE(psz))
1391	psz++;
1392
1393	/* Copy it. */
1394	size_t cchWord = (uintptr_t)psz - (uintptr_t)pszStart;
1395	if (cchWord >= cbBuf)
1396	return false;
1397	memcpy(pszBuf, pszStart, cchWord);
1398	pszBuf[cchWord] = '\0';
1399
1400	/* Skip blanks following it. */
1401	while (RT_C_IS_SPACE(*psz))
1402	psz++;
1403	*ppszCursor = psz;
1404	return true;
1405	}
1406
1407
1408	/**
1409	* Parses an 16:16 address.
1410	*
1411	* @returns @c true on success, @c false on failure.
1412	* @param ppszCursor Pointer to the cursor variable.
1413	* @param pAddr Where to return the address.
1414	*/
1415	static bool mapParseAddress(char **ppszCursor, PRTFAR16 pAddr)
1416	{
1417	char szWord[32];
1418	if (!mapParseWord(ppszCursor, szWord, sizeof(szWord)))
1419	return false;
1420	size_t cchWord = strlen(szWord);
1421
1422	/* An address is at least 16:16 format. It may be 16:32. It may also be flagged. */
1423	size_t cchAddr = 4 + 1 + 4;
1424	if (cchWord < cchAddr)
1425	return false;
1426	if ( !RT_C_IS_XDIGIT(szWord[0])
1427	\|\| !RT_C_IS_XDIGIT(szWord[1])
1428	\|\| !RT_C_IS_XDIGIT(szWord[2])
1429	\|\| !RT_C_IS_XDIGIT(szWord[3])
1430	\|\| szWord[4] != ':'
1431	\|\| !RT_C_IS_XDIGIT(szWord[5])
1432	\|\| !RT_C_IS_XDIGIT(szWord[6])
1433	\|\| !RT_C_IS_XDIGIT(szWord[7])
1434	\|\| !RT_C_IS_XDIGIT(szWord[8])
1435	)
1436	return false;
1437	if ( cchWord > cchAddr
1438	&& RT_C_IS_XDIGIT(szWord[9])
1439	&& RT_C_IS_XDIGIT(szWord[10])
1440	&& RT_C_IS_XDIGIT(szWord[11])
1441	&& RT_C_IS_XDIGIT(szWord[12]))
1442	cchAddr += 4;
1443
1444	/* Drop flag if present. */
1445	if (cchWord > cchAddr)
1446	{
1447	if (RT_C_IS_XDIGIT(szWord[cchAddr]))
1448	return false;
1449	szWord[cchAddr] = '\0';
1450	cchWord = cchAddr;
1451	}
1452
1453	/* Convert it. */
1454	szWord[4] = '\0';
1455	int rc1 = RTStrToUInt16Full(szWord, 16, &pAddr->sel);
1456	if (rc1 != VINF_SUCCESS)
1457	return false;
1458
1459	int rc2 = RTStrToUInt16Full(szWord + 5, 16, &pAddr->off);
1460	if (rc2 != VINF_SUCCESS)
1461	return false;
1462	return true;
1463	}
1464
1465
1466	/**
1467	* Parses a size.
1468	*
1469	* @returns @c true on success, @c false on failure.
1470	* @param ppszCursor Pointer to the cursor variable.
1471	* @param pcb Where to return the size.
1472	*/
1473	static bool mapParseSize(char *ppszCursor, uint32_t pcb)
1474	{
1475	char szWord[32];
1476	if (!mapParseWord(ppszCursor, szWord, sizeof(szWord)))
1477	return false;
1478	size_t cchWord = strlen(szWord);
1479	if (cchWord != 8)
1480	return false;
1481
1482	int rc = RTStrToUInt32Full(szWord, 16, pcb);
1483	if (rc != VINF_SUCCESS)
1484	return false;
1485	return true;
1486	}
1487
1488
1489	/**
1490	* Parses a section box and the following column header.
1491	*
1492	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1493	* @param pMap Map file handle.
1494	* @param pszSectionNm The expected section name.
1495	* @param cColumns The number of columns.
1496	* @param ... The column names.
1497	*/
1498	static bool mapSkipThruColumnHeadings(PBIOSMAP pMap, const char *pszSectionNm, uint32_t cColumns, ...)
1499	{
1500	if ( mapIsEmptyLine(pMap)
1501	&& !mapSkipEmptyLines(pMap))
1502	return false;
1503
1504	/* +------------+ */
1505	size_t cch;
1506	char *psz = mapStripCurrentLine(pMap, &cch);
1507	if (!psz)
1508	return false;
1509
1510	if ( psz[0] != '+'
1511	\|\| psz[1] != '-'
1512	\|\| psz[2] != '-'
1513	\|\| psz[3] != '-'
1514	\|\| psz[cch - 4] != '-'
1515	\|\| psz[cch - 3] != '-'
1516	\|\| psz[cch - 2] != '-'
1517	\|\| psz[cch - 1] != '+'
1518	)
1519	{
1520	RTMsgError("%s:%d: Expected section box: +-----...", pMap->pszMapFile, pMap->iLine);
1521	return false;
1522	}
1523
1524	/* \| pszSectionNm \| */
1525	psz = mapReadLineStrip(pMap, &cch);
1526	if (!psz)
1527	return false;
1528
1529	size_t cchSectionNm = strlen(pszSectionNm);
1530	if ( psz[0] != '\|'
1531	\|\| psz[1] != ' '
1532	\|\| psz[2] != ' '
1533	\|\| psz[3] != ' '
1534	\|\| psz[cch - 4] != ' '
1535	\|\| psz[cch - 3] != ' '
1536	\|\| psz[cch - 2] != ' '
1537	\|\| psz[cch - 1] != '\|'
1538	\|\| cch != 1 + 3 + cchSectionNm + 3 + 1
1539	\|\| strncmp(&psz[4], pszSectionNm, cchSectionNm)
1540	)
1541	{
1542	RTMsgError("%s:%d: Expected section box: \| %s \|", pMap->pszMapFile, pMap->iLine, pszSectionNm);
1543	return false;
1544	}
1545
1546	/* +------------+ */
1547	psz = mapReadLineStrip(pMap, &cch);
1548	if (!psz)
1549	return false;
1550	if ( psz[0] != '+'
1551	\|\| psz[1] != '-'
1552	\|\| psz[2] != '-'
1553	\|\| psz[3] != '-'
1554	\|\| psz[cch - 4] != '-'
1555	\|\| psz[cch - 3] != '-'
1556	\|\| psz[cch - 2] != '-'
1557	\|\| psz[cch - 1] != '+'
1558	)
1559	{
1560	RTMsgError("%s:%d: Expected section box: +-----...", pMap->pszMapFile, pMap->iLine);
1561	return false;
1562	}
1563
1564	/* There may be a few lines describing the table notation now, surrounded by blank lines. */
1565	do
1566	{
1567	psz = mapReadLineStripRight(pMap, &cch);
1568	if (!psz)
1569	return false;
1570	} while ( *psz == '\0'
1571	\|\| ( !RT_C_IS_SPACE(psz[0])
1572	&& RT_C_IS_SPACE(psz[1])
1573	&& psz[2] == '='
1574	&& RT_C_IS_SPACE(psz[3]))
1575	);
1576
1577	/* Should have the column heading now. */
1578	va_list va;
1579	va_start(va, cColumns);
1580	for (uint32_t i = 0; i < cColumns; i++)
1581	{
1582	const char pszColumn = va_arg(va, const char );
1583	size_t cchColumn = strlen(pszColumn);
1584	if ( strncmp(psz, pszColumn, cchColumn)
1585	\|\| ( psz[cchColumn] != '\0'
1586	&& !RT_C_IS_SPACE(psz[cchColumn])))
1587	{
1588	va_end(va);
1589	RTMsgError("%s:%d: Expected column '%s' found '%s'", pMap->pszMapFile, pMap->iLine, pszColumn, psz);
1590	return false;
1591	}
1592	psz += cchColumn;
1593	while (RT_C_IS_SPACE(*psz))
1594	psz++;
1595	}
1596	va_end(va);
1597
1598	/* The next line is the underlining. */
1599	psz = mapReadLineStripRight(pMap, &cch);
1600	if (!psz)
1601	return false;
1602	if (*psz != '=' \|\| psz[cch - 1] != '=')
1603	{
1604	RTMsgError("%s:%d: Expected column header underlining", pMap->pszMapFile, pMap->iLine);
1605	return false;
1606	}
1607
1608	/* Skip one blank line. */
1609	psz = mapReadLineStripRight(pMap, &cch);
1610	if (!psz)
1611	return false;
1612	if (*psz)
1613	{
1614	RTMsgError("%s:%d: Expected blank line beneath the column headers", pMap->pszMapFile, pMap->iLine);
1615	return false;
1616	}
1617
1618	return true;
1619	}
1620
1621
1622	/**
1623	* Parses a segment list.
1624	*
1625	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1626	* @param pMap The map file handle.
1627	*/
1628	static bool mapParseSegments(PBIOSMAP pMap)
1629	{
1630	for (;;)
1631	{
1632	if (!mapReadLineStripRight(pMap, NULL))
1633	return false;
1634
1635	/* The end? The line should be empty. Expectes segment name to not
1636	start with a space. */
1637	if (!pMap->szLine[0] \|\| RT_C_IS_SPACE(pMap->szLine[0]))
1638	{
1639	if (!pMap->szLine[0])
1640	return true;
1641	RTMsgError("%s:%u: Malformed segment line", pMap->pszMapFile, pMap->iLine);
1642	return false;
1643	}
1644
1645	/* Parse the segment line. */
1646	uint32_t iSeg = g_cSegs;
1647	if (iSeg >= RT_ELEMENTS(g_aSegs))
1648	{
1649	RTMsgError("%s:%u: Too many segments", pMap->pszMapFile, pMap->iLine);
1650	return false;
1651	}
1652
1653	char *psz = pMap->szLine;
1654	if (!mapParseWord(&psz, g_aSegs[iSeg].szName, sizeof(g_aSegs[iSeg].szName)))
1655	RTMsgError("%s:%u: Segment name parser error", pMap->pszMapFile, pMap->iLine);
1656	else if (!mapParseWord(&psz, g_aSegs[iSeg].szClass, sizeof(g_aSegs[iSeg].szClass)))
1657	RTMsgError("%s:%u: Segment class parser error", pMap->pszMapFile, pMap->iLine);
1658	else if (!mapParseWord(&psz, g_aSegs[iSeg].szGroup, sizeof(g_aSegs[iSeg].szGroup)))
1659	RTMsgError("%s:%u: Segment group parser error", pMap->pszMapFile, pMap->iLine);
1660	else if (!mapParseAddress(&psz, &g_aSegs[iSeg].Address))
1661	RTMsgError("%s:%u: Segment address parser error", pMap->pszMapFile, pMap->iLine);
1662	else if (!mapParseSize(&psz, &g_aSegs[iSeg].cb))
1663	RTMsgError("%s:%u: Segment size parser error", pMap->pszMapFile, pMap->iLine);
1664	else
1665	{
1666	g_aSegs[iSeg].uFlatAddr = ((uint32_t)g_aSegs[iSeg].Address.sel << 4) + g_aSegs[iSeg].Address.off;
1667	g_cSegs++;
1668	if (g_cVerbose > 2)
1669	RTStrmPrintf(g_pStdErr, "read segment at %08x / %04x:%04x LB %04x %s / %s / %s\n",
1670	g_aSegs[iSeg].uFlatAddr,
1671	g_aSegs[iSeg].Address.sel,
1672	g_aSegs[iSeg].Address.off,
1673	g_aSegs[iSeg].cb,
1674	g_aSegs[iSeg].szName,
1675	g_aSegs[iSeg].szClass,
1676	g_aSegs[iSeg].szGroup);
1677
1678	while (RT_C_IS_SPACE(*psz))
1679	psz++;
1680	if (!*psz)
1681	continue;
1682	RTMsgError("%s:%u: Junk at end of line", pMap->pszMapFile, pMap->iLine);
1683	}
1684	return false;
1685	}
1686	}
1687
1688
1689	/**
1690	* Sorts the segment array by flat address and adds them to the debug module.
1691	*
1692	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1693	*/
1694	static bool mapSortAndAddSegments(void)
1695	{
1696	for (uint32_t i = 0; i < g_cSegs; i++)
1697	{
1698	for (uint32_t j = i + 1; j < g_cSegs; j++)
1699	if (g_aSegs[j].uFlatAddr < g_aSegs[i].uFlatAddr)
1700	{
1701	BIOSSEG Tmp = g_aSegs[i];
1702	g_aSegs[i] = g_aSegs[j];
1703	g_aSegs[j] = Tmp;
1704	}
1705	if (g_cVerbose > 0)
1706	RTStrmPrintf(g_pStdErr, "segment at %08x / %04x:%04x LB %04x %s / %s / %s\n",
1707	g_aSegs[i].uFlatAddr,
1708	g_aSegs[i].Address.sel,
1709	g_aSegs[i].Address.off,
1710	g_aSegs[i].cb,
1711	g_aSegs[i].szName,
1712	g_aSegs[i].szClass,
1713	g_aSegs[i].szGroup);
1714
1715	RTDBGSEGIDX idx = i;
1716	int rc = RTDbgModSegmentAdd(g_hMapMod, g_aSegs[i].uFlatAddr, g_aSegs[i].cb, g_aSegs[i].szName, 0 /fFlags/, &idx);
1717	if (RT_FAILURE(rc))
1718	{
1719	RTMsgError("RTDbgModSegmentAdd failed on %s: %Rrc", g_aSegs[i].szName);
1720	return false;
1721	}
1722	}
1723	return true;
1724	}
1725
1726
1727	/**
1728	* Parses a segment list.
1729	*
1730	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1731	* @param pMap The map file handle.
1732	*/
1733	static bool mapParseSymbols(PBIOSMAP pMap)
1734	{
1735	for (;;)
1736	{
1737	if (!mapReadLineStripRight(pMap, NULL))
1738	return false;
1739
1740	/* The end? The line should be empty. Expectes segment name to not
1741	start with a space. */
1742	if (!pMap->szLine[0] \|\| RT_C_IS_SPACE(pMap->szLine[0]))
1743	{
1744	if (!pMap->szLine[0])
1745	return true;
1746	return mapError(pMap, "Malformed symbol line");
1747	}
1748
1749	if (!strncmp(pMap->szLine, RT_STR_TUPLE("Module: ")))
1750	{
1751	/* Parse the module line. */
1752	size_t offObj = sizeof("Module: ") - 1;
1753	while (RT_C_IS_SPACE(pMap->szLine[offObj]))
1754	offObj++;
1755	size_t offSrc = offObj;
1756	char ch;
1757	while ((ch = pMap->szLine[offSrc]) != '(' && ch != '\0')
1758	offSrc++;
1759	size_t cchObj = offSrc - offObj;
1760
1761	offSrc++;
1762	size_t cchSrc = offSrc;
1763	while ((ch = pMap->szLine[cchSrc]) != ')' && ch != '\0')
1764	cchSrc++;
1765	cchSrc -= offSrc;
1766	if (ch != ')')
1767	return mapError(pMap, "Symbol/Module line parse error");
1768
1769	PBIOSOBJFILE pObjFile = (PBIOSOBJFILE)RTMemAllocZ(sizeof(*pObjFile) + cchSrc + cchObj + 2);
1770	if (!pObjFile)
1771	return mapError(pMap, "Out of memory");
1772	char psz = (char )(pObjFile + 1);
1773	pObjFile->pszObject = psz;
1774	memcpy(psz, &pMap->szLine[offObj], cchObj);
1775	psz += cchObj;
1776	*psz++ = '\0';
1777	pObjFile->pszSource = psz;
1778	memcpy(psz, &pMap->szLine[offSrc], cchSrc);
1779	psz[cchSrc] = '\0';
1780	RTListAppend(&g_ObjList, &pObjFile->Node);
1781	}
1782	else
1783	{
1784	/* Parse the segment line. */
1785	RTFAR16 Addr;
1786	char *psz = pMap->szLine;
1787	if (!mapParseAddress(&psz, &Addr))
1788	return mapError(pMap, "Symbol address parser error");
1789
1790	char szName[4096];
1791	if (!mapParseWord(&psz, szName, sizeof(szName)))
1792	return mapError(pMap, "Symbol name parser error");
1793
1794	uint32_t uFlatAddr = ((uint32_t)Addr.sel << 4) + Addr.off;
1795	if (uFlatAddr != 0)
1796	{
1797	int rc = RTDbgModSymbolAdd(g_hMapMod, szName, RTDBGSEGIDX_RVA, uFlatAddr, 0 /cb/, 0 /fFlags/, NULL);
1798	if (RT_FAILURE(rc) && rc != VERR_DBG_ADDRESS_CONFLICT)
1799	{
1800	/* HACK ALERT! For dealing with lables at segment size. / /* @todo fix end labels. */
1801	rc = RTDbgModSymbolAdd(g_hMapMod, szName, RTDBGSEGIDX_RVA, uFlatAddr - 1, 0 /cb/, 0 /fFlags/, NULL);
1802	if (RT_FAILURE(rc) && rc != VERR_DBG_ADDRESS_CONFLICT)
1803	return mapError(pMap, "RTDbgModSymbolAdd failed: %Rrc", rc);
1804	}
1805
1806	if (g_cVerbose > 2)
1807	RTStrmPrintf(g_pStdErr, "read symbol - %08x %s\n", uFlatAddr, szName);
1808	while (RT_C_IS_SPACE(*psz))
1809	psz++;
1810	if (*psz)
1811	return mapError(pMap, "Junk at end of line");
1812	}
1813
1814	}
1815	}
1816	}
1817
1818
1819	/**
1820	* Parses the given map file.
1821	*
1822	* @returns RTEXITCODE_SUCCESS and lots of globals, or RTEXITCODE_FAILURE and a
1823	* error message.
1824	* @param pMap The map file handle.
1825	*/
1826	static RTEXITCODE mapParseFile(PBIOSMAP pMap)
1827	{
1828	int rc = RTDbgModCreate(&g_hMapMod, "VBoxBios", 0 /cbSeg/, 0 /fFlags/);
1829	if (RT_FAILURE(rc))
1830	return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTDbgModCreate failed: %Rrc", rc);
1831
1832	/*
1833	* Read the header.
1834	*/
1835	if (!mapReadLine(pMap))
1836	return RTEXITCODE_FAILURE;
1837	if (strncmp(pMap->szLine, RT_STR_TUPLE("Open Watcom Linker Version")))
1838	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Unexpected map-file header: '%s'", pMap->szLine);
1839	if ( !mapSkipNonEmptyLines(pMap)
1840	\|\| !mapSkipEmptyLines(pMap))
1841	return RTEXITCODE_FAILURE;
1842
1843	/*
1844	* Skip groups.
1845	*/
1846	if (!mapSkipThruColumnHeadings(pMap, "Groups", 3, "Group", "Address", "Size", NULL))
1847	return RTEXITCODE_FAILURE;
1848	if (!mapSkipNonEmptyLines(pMap))
1849	return RTEXITCODE_FAILURE;
1850
1851	/*
1852	* Parse segments.
1853	*/
1854	if (!mapSkipThruColumnHeadings(pMap, "Segments", 5, "Segment", "Class", "Group", "Address", "Size"))
1855	return RTEXITCODE_FAILURE;
1856	if (!mapParseSegments(pMap))
1857	return RTEXITCODE_FAILURE;
1858	if (!mapSortAndAddSegments())
1859	return RTEXITCODE_FAILURE;
1860
1861	/*
1862	* Parse symbols.
1863	*/
1864	if (!mapSkipThruColumnHeadings(pMap, "Memory Map", 2, "Address", "Symbol"))
1865	return RTEXITCODE_FAILURE;
1866	if (!mapParseSymbols(pMap))
1867	return RTEXITCODE_FAILURE;
1868
1869	/* Ignore the rest of the file. */
1870	return RTEXITCODE_SUCCESS;
1871	}
1872
1873
1874	/**
1875	* Parses the linker map file for the BIOS.
1876	*
1877	* This is generated by the Watcom linker.
1878	*
1879	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
1880	* @param pszBiosMap Path to the map file.
1881	*/
1882	static RTEXITCODE ParseMapFile(const char *pszBiosMap)
1883	{
1884	BIOSMAP Map;
1885	Map.pszMapFile = pszBiosMap;
1886	Map.hStrm = NULL;
1887	Map.iLine = 0;
1888	Map.fEof = false;
1889	Map.cch = 0;
1890	Map.offNW = 0;
1891	int rc = RTStrmOpen(pszBiosMap, "r", &Map.hStrm);
1892	if (RT_FAILURE(rc))
1893	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error opening '%s': %Rrc", pszBiosMap, rc);
1894	RTEXITCODE rcExit = mapParseFile(&Map);
1895	RTStrmClose(Map.hStrm);
1896	return rcExit;
1897	}
1898
1899
1900	/**
1901	* Reads the BIOS image into memory (g_pbImg and g_cbImg).
1902	*
1903	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
1904	* @param pszBiosImg Path to the image file.
1905	*/
1906	static RTEXITCODE ReadBiosImage(const char *pszBiosImg)
1907	{
1908	void *pvImg;
1909	size_t cbImg;
1910	int rc = RTFileReadAll(pszBiosImg, &pvImg, &cbImg);
1911	if (RT_FAILURE(rc))
1912	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error reading '%s': %Rrc", pszBiosImg, rc);
1913
1914	size_t cbImgExpect;
1915	switch (g_enmBiosType)
1916	{
1917	case kBiosType_System: cbImgExpect = _64K; break;
1918	case kBiosType_Vga: cbImgExpect = _32K; break;
1919	default: cbImgExpect = 0; break;
1920	}
1921	if (cbImg != cbImgExpect)
1922	{
1923	RTFileReadAllFree(pvImg, cbImg);
1924	return RTMsgErrorExit(RTEXITCODE_FAILURE, "The BIOS image %u bytes intead of %u bytes", cbImg, cbImgExpect);
1925	}
1926
1927	g_pbImg = (uint8_t *)pvImg;
1928	g_cbImg = cbImg;
1929	return RTEXITCODE_SUCCESS;
1930	}
1931
1932
1933	int main(int argc, char **argv)
1934	{
1935	int rc = RTR3InitExe(argc, &argv, 0);
1936	if (RT_FAILURE(rc))
1937	return RTMsgInitFailure(rc);
1938
1939	RTListInit(&g_ObjList);
1940
1941	/*
1942	* Option config.
1943	*/
1944	static RTGETOPTDEF const s_aOpts[] =
1945	{
1946	{ "--bios-image", 'i', RTGETOPT_REQ_STRING },
1947	{ "--bios-map", 'm', RTGETOPT_REQ_STRING },
1948	{ "--bios-sym", 's', RTGETOPT_REQ_STRING },
1949	{ "--bios-type", 't', RTGETOPT_REQ_STRING },
1950	{ "--output", 'o', RTGETOPT_REQ_STRING },
1951	{ "--verbose", 'v', RTGETOPT_REQ_NOTHING },
1952	{ "--quiet", 'q', RTGETOPT_REQ_NOTHING },
1953	};
1954
1955	const char *pszBiosMap = NULL;
1956	const char *pszBiosSym = NULL;
1957	const char *pszBiosImg = NULL;
1958	const char *pszOutput = NULL;
1959
1960	RTGETOPTUNION ValueUnion;
1961	RTGETOPTSTATE GetOptState;
1962	rc = RTGetOptInit(&GetOptState, argc, argv, &s_aOpts[0], RT_ELEMENTS(s_aOpts), 1, RTGETOPTINIT_FLAGS_OPTS_FIRST);
1963	AssertReleaseRCReturn(rc, RTEXITCODE_FAILURE);
1964
1965	/*
1966	* Process the options.
1967	*/
1968	while ((rc = RTGetOpt(&GetOptState, &ValueUnion)) != 0)
1969	{
1970	switch (rc)
1971	{
1972	case 'i':
1973	if (pszBiosImg)
1974	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-image is given more than once");
1975	pszBiosImg = ValueUnion.psz;
1976	break;
1977
1978	case 'm':
1979	if (pszBiosMap)
1980	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-map is given more than once");
1981	pszBiosMap = ValueUnion.psz;
1982	break;
1983
1984	case 's':
1985	if (pszBiosSym)
1986	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-sym is given more than once");
1987	pszBiosSym = ValueUnion.psz;
1988	break;
1989
1990	case 'o':
1991	if (pszOutput)
1992	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--output is given more than once");
1993	pszOutput = ValueUnion.psz;
1994	break;
1995
1996	case 't':
1997	if (!strcmp(ValueUnion.psz, "system"))
1998	{
1999	g_enmBiosType = kBiosType_System;
2000	g_uBiosFlatBase = 0xf0000;
2001	}
2002	else if (!strcmp(ValueUnion.psz, "vga"))
2003	{
2004	g_enmBiosType = kBiosType_Vga;
2005	g_uBiosFlatBase = 0xc0000;
2006	}
2007	else
2008	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Unknown bios type '%s'", ValueUnion.psz);
2009	break;
2010
2011	case 'v':
2012	g_cVerbose++;
2013	break;
2014
2015	case 'q':
2016	g_cVerbose = 0;
2017	break;
2018
2019	case 'H':
2020	RTPrintf("usage: %Rbn --bios-image <file.img> --bios-map <file.map> [--output <file.asm>]\n",
2021	argv[0]);
2022	return RTEXITCODE_SUCCESS;
2023
2024	case 'V':
2025	{
2026	/* The following is assuming that svn does it's job here. */
2027	char szRev[] = "$Revision: 62120 $";
2028	char *psz = szRev;
2029	while (psz && !RT_C_IS_DIGIT(psz))
2030	psz++;
2031	size_t i = strlen(psz);
2032	while (i > 0 && !RT_C_IS_DIGIT(psz[i - 1]))
2033	psz[--i] = '\0';
2034
2035	RTPrintf("r%s\n", psz);
2036	return RTEXITCODE_SUCCESS;
2037	}
2038
2039	default:
2040	return RTGetOptPrintError(rc, &ValueUnion);
2041	}
2042	}
2043
2044	/*
2045	* Got it all?
2046	*/
2047	if (!pszBiosImg)
2048	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-image is required");
2049	if (!pszBiosMap)
2050	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-map is required");
2051	if (!pszBiosSym)
2052	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-sym is required");
2053
2054	/*
2055	* Do the job.
2056	*/
2057	RTEXITCODE rcExit;
2058	rcExit = ReadBiosImage(pszBiosImg);
2059	if (rcExit == RTEXITCODE_SUCCESS)
2060	rcExit = ParseMapFile(pszBiosMap);
2061	if (rcExit == RTEXITCODE_SUCCESS)
2062	rcExit = ParseSymFile(pszBiosSym);
2063	if (rcExit == RTEXITCODE_SUCCESS)
2064	rcExit = OpenOutputFile(pszOutput);
2065	if (rcExit == RTEXITCODE_SUCCESS)
2066	rcExit = DisassembleBiosImage();
2067
2068	return rcExit;
2069	}
2070

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source: vbox/trunk/src/VBox/Devices/BiosCommonCode/MakeAlternativeSource.cpp@ 62284

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