MakeAlternativeSource.cpp@ 62450

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bldprogs: MSC level 4 warning fixes.
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1	/* $Id: MakeAlternativeSource.cpp 62450 2016-07-22 15:04:27Z 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.alldomusa.eu.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 62450 2016-07-22 15:04:27Z 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	#if 0 /* unused */
341	/**
342	* Checks if a dword could be a far 16:16 BIOS address.
343	*
344	* @returns @c true if it is, @c false if it isn't.
345	* @param uFlatAddr The address of the dword.
346	*/
347	static bool disIsFarBiosAddr(uint32_t uFlatAddr)
348	{
349	uint16_t const pu16 = (uint16_t const )&g_pbImg[uFlatAddr - g_uBiosFlatBase];
350	if (pu16[1] < 0xf000)
351	return false;
352	if (pu16[1] > 0xfff0)
353	return false;
354	uint32_t uFlatAddr2 = (uint32_t)(pu16[1] << 4) \| pu16[0];
355	if (uFlatAddr2 >= g_uBiosFlatBase + g_cbImg)
356	return false;
357	return true;
358	}
359	#endif
360
361
362	static bool disByteData(uint32_t uFlatAddr, uint32_t cb)
363	{
364	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
365	size_t cbOnLine = 0;
366	while (cb-- > 0)
367	{
368	bool fRc;
369	if (cbOnLine >= 16)
370	{
371	fRc = outputPrintf("\n"
372	" db 0%02xh", *pb);
373	cbOnLine = 1;
374	}
375	else if (!cbOnLine)
376	{
377	fRc = outputPrintf(" db 0%02xh", *pb);
378	cbOnLine = 1;
379	}
380	else
381	{
382	fRc = outputPrintf(", 0%02xh", *pb);
383	cbOnLine++;
384	}
385	if (!fRc)
386	return false;
387	pb++;
388	}
389	return outputPrintf("\n");
390	}
391
392
393	static bool disWordData(uint32_t uFlatAddr, uint32_t cb)
394	{
395	if (cb & 1)
396	return disError("disWordData expects word aligned size: cb=%#x uFlatAddr=%#x", uFlatAddr, cb);
397
398	uint16_t const pu16 = (uint16_t const )&g_pbImg[uFlatAddr - g_uBiosFlatBase];
399	size_t cbOnLine = 0;
400	while (cb > 0)
401	{
402	bool fRc;
403	if (cbOnLine >= 16)
404	{
405	fRc = outputPrintf("\n"
406	" dw 0%04xh", *pu16);
407	cbOnLine = 2;
408	}
409	else if (!cbOnLine)
410	{
411	fRc = outputPrintf(" dw 0%04xh", *pu16);
412	cbOnLine = 2;
413	}
414	else
415	{
416	fRc = outputPrintf(", 0%04xh", *pu16);
417	cbOnLine += 2;
418	}
419	if (!fRc)
420	return false;
421	pu16++;
422	cb -= 2;
423	}
424	return outputPrintf("\n");
425	}
426
427
428	static bool disDWordData(uint32_t uFlatAddr, uint32_t cb)
429	{
430	if (cb & 3)
431	return disError("disWordData expects dword aligned size: cb=%#x uFlatAddr=%#x", uFlatAddr, cb);
432
433	uint32_t const pu32 = (uint32_t const )&g_pbImg[uFlatAddr - g_uBiosFlatBase];
434	size_t cbOnLine = 0;
435	while (cb > 0)
436	{
437	bool fRc;
438	if (cbOnLine >= 16)
439	{
440	fRc = outputPrintf("\n"
441	" dd 0%08xh", *pu32);
442	cbOnLine = 4;
443	}
444	else if (!cbOnLine)
445	{
446	fRc = outputPrintf(" dd 0%08xh", *pu32);
447	cbOnLine = 4;
448	}
449	else
450	{
451	fRc = outputPrintf(", 0%08xh", *pu32);
452	cbOnLine += 4;
453	}
454	if (!fRc)
455	return false;
456	pu32++;
457	cb -= 4;
458	}
459	return outputPrintf("\n");
460	}
461
462
463	static bool disStringData(uint32_t uFlatAddr, uint32_t cb)
464	{
465	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
466	uint32_t cchOnLine = 0;
467	while (cb > 0)
468	{
469	/* Line endings and beginnings. */
470	if (cchOnLine >= 72)
471	{
472	if (!outputPrintf("\n"))
473	return false;
474	cchOnLine = 0;
475	}
476	if ( !cchOnLine
477	&& !outputPrintf(" db "))
478	return false;
479
480	/* See how many printable character we've got. */
481	uint32_t cchPrintable = 0;
482	while ( cchPrintable < cb
483	&& RT_C_IS_PRINT(pb[cchPrintable])
484	&& pb[cchPrintable] != '\'')
485	cchPrintable++;
486
487	bool fRc = true;
488	if (cchPrintable)
489	{
490	if (cchPrintable + cchOnLine > 72)
491	cchPrintable = 72 - cchOnLine;
492	if (cchOnLine)
493	{
494	fRc = outputPrintf(", '%.*s'", cchPrintable, pb);
495	cchOnLine += 4 + cchPrintable;
496	}
497	else
498	{
499	fRc = outputPrintf("'%.*s'", cchPrintable, pb);
500	cchOnLine += 2 + cchPrintable;
501	}
502	pb += cchPrintable;
503	cb -= cchPrintable;
504	}
505	else
506	{
507	if (cchOnLine)
508	{
509	fRc = outputPrintf(", 0%02xh", *pb);
510	cchOnLine += 6;
511	}
512	else
513	{
514	fRc = outputPrintf("0%02xh", *pb);
515	cchOnLine += 4;
516	}
517	pb++;
518	cb--;
519	}
520	if (!fRc)
521	return false;
522	}
523	return outputPrintf("\n");
524	}
525
526
527	/**
528	* For dumping a portion of a string table.
529	*
530	* @returns @c true on success, @c false on failure.
531	* @param uFlatAddr The start address.
532	* @param cb The size of the string table.
533	*/
534	static bool disStringsData(uint32_t uFlatAddr, uint32_t cb)
535	{
536	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
537	uint32_t cchOnLine = 0;
538	uint8_t bPrev = 255;
539	while (cb > 0)
540	{
541	/* Line endings and beginnings. */
542	if ( cchOnLine >= 72
543	\|\| (bPrev == '\0' && *pb != '\0'))
544	{
545	if (!outputPrintf("\n"))
546	return false;
547	cchOnLine = 0;
548	}
549	if ( !cchOnLine
550	&& !outputPrintf(" db "))
551	return false;
552
553	/* See how many printable character we've got. */
554	uint32_t cchPrintable = 0;
555	while ( cchPrintable < cb
556	&& RT_C_IS_PRINT(pb[cchPrintable])
557	&& pb[cchPrintable] != '\'')
558	cchPrintable++;
559
560	bool fRc = true;
561	if (cchPrintable)
562	{
563	if (cchPrintable + cchOnLine > 72)
564	cchPrintable = 72 - cchOnLine;
565	if (cchOnLine)
566	{
567	fRc = outputPrintf(", '%.*s'", cchPrintable, pb);
568	cchOnLine += 4 + cchPrintable;
569	}
570	else
571	{
572	fRc = outputPrintf("'%.*s'", cchPrintable, pb);
573	cchOnLine += 2 + cchPrintable;
574	}
575	pb += cchPrintable;
576	cb -= cchPrintable;
577	}
578	else
579	{
580	if (cchOnLine)
581	{
582	fRc = outputPrintf(", 0%02xh", *pb);
583	cchOnLine += 6;
584	}
585	else
586	{
587	fRc = outputPrintf("0%02xh", *pb);
588	cchOnLine += 4;
589	}
590	pb++;
591	cb--;
592	}
593	if (!fRc)
594	return false;
595	bPrev = pb[-1];
596	}
597	return outputPrintf("\n");
598	}
599
600
601	/**
602	* Minds the gap between two segments.
603	*
604	* Gaps should generally be zero filled.
605	*
606	* @returns @c true on success, @c false on failure.
607	* @param uFlatAddr The address of the gap.
608	* @param cbPadding The size of the gap.
609	*/
610	static bool disCopySegmentGap(uint32_t uFlatAddr, uint32_t cbPadding)
611	{
612	if (g_cVerbose > 0)
613	outputPrintf("\n"
614	" ; Padding %#x bytes at %#x\n", cbPadding, uFlatAddr);
615	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
616	if (ASMMemIsZero(pb, cbPadding))
617	return outputPrintf(" times %u db 0\n", cbPadding);
618
619	return disByteData(uFlatAddr, cbPadding);
620	}
621
622
623	/**
624	* Worker for disGetNextSymbol that only does the looking up, no RTDBSYMBOL::cb
625	* calc.
626	*
627	* @param uFlatAddr The address to start searching at.
628	* @param cbMax The size of the search range.
629	* @param poff Where to return the offset between the symbol
630	* and @a uFlatAddr.
631	* @param pSym Where to return the symbol data.
632	*/
633	static void disGetNextSymbolWorker(uint32_t uFlatAddr, uint32_t cbMax, uint32_t *poff, PRTDBGSYMBOL pSym)
634	{
635	RTINTPTR off = 0;
636	int rc = RTDbgModSymbolByAddr(g_hMapMod, RTDBGSEGIDX_RVA, uFlatAddr, RTDBGSYMADDR_FLAGS_GREATER_OR_EQUAL, &off, pSym);
637	if (RT_SUCCESS(rc))
638	{
639	/* negative offset, indicates beyond. */
640	if (off <= 0)
641	{
642	*poff = (uint32_t)-off;
643	return;
644	}
645
646	outputPrintf(" ; !! RTDbgModSymbolByAddr(,,%#x,,) -> off=%RTptr cb=%RTptr uValue=%RTptr '%s'\n",
647	uFlatAddr, off, pSym->cb, pSym->Value, pSym->szName);
648	}
649	else if (rc != VERR_SYMBOL_NOT_FOUND)
650	outputPrintf(" ; !! RTDbgModSymbolByAddr(,,%#x,,) -> %Rrc\n", uFlatAddr, rc);
651
652	RTStrPrintf(pSym->szName, sizeof(pSym->szName), "_dummy_addr_%#x", uFlatAddr + cbMax);
653	pSym->Value = uFlatAddr + cbMax;
654	pSym->cb = 0;
655	pSym->offSeg = uFlatAddr + cbMax;
656	pSym->iSeg = RTDBGSEGIDX_RVA;
657	pSym->iOrdinal = 0;
658	pSym->fFlags = 0;
659	*poff = cbMax;
660	}
661
662
663	/**
664	* Gets the symbol at or after the given address.
665	*
666	* If there are no symbols in the specified range, @a pSym and @a poff will be
667	* set up to indicate a symbol at the first byte after the range.
668	*
669	* @param uFlatAddr The address to start searching at.
670	* @param cbMax The size of the search range.
671	* @param poff Where to return the offset between the symbol
672	* and @a uFlatAddr.
673	* @param pSym Where to return the symbol data.
674	*/
675	static void disGetNextSymbol(uint32_t uFlatAddr, uint32_t cbMax, uint32_t *poff, PRTDBGSYMBOL pSym)
676	{
677	disGetNextSymbolWorker(uFlatAddr, cbMax, poff, pSym);
678	if ( *poff < cbMax
679	&& pSym->cb == 0)
680	{
681	if (*poff + 1 < cbMax)
682	{
683	uint32_t off2;
684	RTDBGSYMBOL Sym2;
685	disGetNextSymbolWorker(uFlatAddr + poff + 1, cbMax - poff - 1, &off2, &Sym2);
686	pSym->cb = off2 + 1;
687	}
688	else
689	pSym->cb = 1;
690	}
691	if (pSym->cb > cbMax - *poff)
692	pSym->cb = cbMax - *poff;
693
694	if (g_cVerbose > 1)
695	outputPrintf(" ; disGetNextSymbol %#x LB %#x -> off=%#x cb=%RTptr uValue=%RTptr '%s'\n",
696	uFlatAddr, cbMax, *poff, pSym->cb, pSym->Value, pSym->szName);
697
698	}
699
700
701	/**
702	* For dealing with the const segment (string constants).
703	*
704	* @returns @c true on success, @c false on failure.
705	* @param iSeg The segment.
706	*/
707	static bool disConstSegment(uint32_t iSeg)
708	{
709	uint32_t uFlatAddr = g_aSegs[iSeg].uFlatAddr;
710	uint32_t cb = g_aSegs[iSeg].cb;
711
712	while (cb > 0)
713	{
714	uint32_t off;
715	RTDBGSYMBOL Sym;
716	disGetNextSymbol(uFlatAddr, cb, &off, &Sym);
717
718	if (off > 0)
719	{
720	if (!disStringsData(uFlatAddr, off))
721	return false;
722	cb -= off;
723	uFlatAddr += off;
724	off = 0;
725	if (!cb)
726	break;
727	}
728
729	bool fRc;
730	if (off == 0)
731	{
732	size_t cchName = strlen(Sym.szName);
733	fRc = outputPrintf("%s: %*s; %#x LB %#x\n", Sym.szName, cchName < 41 - 2 ? cchName - 41 - 2 : 0, "", uFlatAddr, Sym.cb);
734	if (!fRc)
735	return false;
736	fRc = disStringsData(uFlatAddr, Sym.cb);
737	uFlatAddr += Sym.cb;
738	cb -= Sym.cb;
739	}
740	else
741	{
742	fRc = disStringsData(uFlatAddr, Sym.cb);
743	uFlatAddr += cb;
744	cb = 0;
745	}
746	if (!fRc)
747	return false;
748	}
749
750	return true;
751	}
752
753
754
755	static bool disDataSegment(uint32_t iSeg)
756	{
757	uint32_t uFlatAddr = g_aSegs[iSeg].uFlatAddr;
758	uint32_t cb = g_aSegs[iSeg].cb;
759
760	while (cb > 0)
761	{
762	uint32_t off;
763	RTDBGSYMBOL Sym;
764	disGetNextSymbol(uFlatAddr, cb, &off, &Sym);
765
766	if (off > 0)
767	{
768	if (!disByteData(uFlatAddr, off))
769	return false;
770	cb -= off;
771	uFlatAddr += off;
772	off = 0;
773	if (!cb)
774	break;
775	}
776
777	bool fRc;
778	if (off == 0)
779	{
780	size_t cchName = strlen(Sym.szName);
781	fRc = outputPrintf("%s: %*s; %#x LB %#x\n", Sym.szName, cchName < 41 - 2 ? cchName - 41 - 2 : 0, "", uFlatAddr, Sym.cb);
782	if (!fRc)
783	return false;
784
785	if (Sym.cb == 2)
786	fRc = disWordData(uFlatAddr, 2);
787	//else if (Sym.cb == 4 && disIsFarBiosAddr(uFlatAddr))
788	// fRc = disDWordData(uFlatAddr, 4);
789	else if (Sym.cb == 4)
790	fRc = disDWordData(uFlatAddr, 4);
791	else if (disIsString(uFlatAddr, Sym.cb))
792	fRc = disStringData(uFlatAddr, Sym.cb);
793	else
794	fRc = disByteData(uFlatAddr, Sym.cb);
795
796	uFlatAddr += Sym.cb;
797	cb -= Sym.cb;
798	}
799	else
800	{
801	fRc = disByteData(uFlatAddr, cb);
802	uFlatAddr += cb;
803	cb = 0;
804	}
805	if (!fRc)
806	return false;
807	}
808
809	return true;
810	}
811
812
813	static bool disIsCodeAndAdjustSize(uint32_t uFlatAddr, PRTDBGSYMBOL pSym, PBIOSSEG pSeg)
814	{
815	switch (g_enmBiosType)
816	{
817	/*
818	* This is for the PC BIOS.
819	*/
820	case kBiosType_System:
821	if (!strcmp(pSeg->szName, "BIOSSEG"))
822	{
823	if ( !strcmp(pSym->szName, "rom_fdpt")
824	\|\| !strcmp(pSym->szName, "pmbios_gdt")
825	\|\| !strcmp(pSym->szName, "pmbios_gdt_desc")
826	\|\| !strcmp(pSym->szName, "_pmode_IDT")
827	\|\| !strcmp(pSym->szName, "_rmode_IDT")
828	\|\| !strncmp(pSym->szName, RT_STR_TUPLE("font"))
829	\|\| !strcmp(pSym->szName, "bios_string")
830	\|\| !strcmp(pSym->szName, "vector_table")
831	\|\| !strcmp(pSym->szName, "pci_routing_table_structure")
832	\|\| !strcmp(pSym->szName, "_pci_routing_table")
833	)
834	return false;
835	}
836
837	if (!strcmp(pSym->szName, "cpu_reset"))
838	pSym->cb = RT_MIN(pSym->cb, 5);
839	else if (!strcmp(pSym->szName, "pci_init_end"))
840	pSym->cb = RT_MIN(pSym->cb, 3);
841	break;
842
843	/*
844	* This is for the VGA BIOS.
845	*/
846	case kBiosType_Vga:
847	break;
848	}
849
850	return true;
851	}
852
853
854	static bool disIs16BitCode(const char *pszSymbol)
855	{
856	return true;
857	}
858
859
860	/**
861	* Deals with instructions that YASM will assemble differently than WASM/WCC.
862	*/
863	static size_t disHandleYasmDifferences(PDISCPUSTATE pCpuState, uint32_t uFlatAddr, uint32_t cbInstr,
864	char *pszBuf, size_t cbBuf, size_t cchUsed)
865	{
866	bool fDifferent = DISFormatYasmIsOddEncoding(pCpuState);
867	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
868
869	/*
870	* Disassembler bugs.
871	*/
872	/** @todo Group 1a and 11 seems to be disassembled incorrectly when
873	* modrm.reg != 0. Those encodings should be invalid AFAICT. */
874
875	if ( ( pCpuState->bOpCode == 0x8f /* group 1a */
876	\|\| pCpuState->bOpCode == 0xc7 /* group 11 */
877	\|\| pCpuState->bOpCode == 0xc6 /* group 11 - not verified */
878	)
879	&& pCpuState->ModRM.Bits.Reg != 0)
880	fDifferent = true;
881	/*
882	* Check these out and consider adding them to DISFormatYasmIsOddEncoding.
883	*/
884	else if ( pb[0] == 0xf3
885	&& pb[1] == 0x66
886	&& pb[2] == 0x6d)
887	fDifferent = true; /* rep insd - prefix switched. */
888	else if ( pb[0] == 0xc6
889	&& pb[1] == 0xc5
890	&& pb[2] == 0xba)
891	fDifferent = true; /* mov ch, 0bah - yasm uses a short sequence: 0xb5 0xba. */
892
893	/*
894	* 32-bit retf.
895	*/
896	else if ( pb[0] == 0x66
897	&& pb[1] == 0xcb)
898	fDifferent = true;
899
900	/*
901	* Handle different stuff.
902	*/
903	if (fDifferent)
904	{
905	disByteData(uFlatAddr, cbInstr); /* lazy bird. */
906
907	if (cchUsed + 2 < cbBuf)
908	{
909	memmove(pszBuf + 2, pszBuf, cchUsed + 1); /* include terminating \0 */
910	cchUsed += 2;
911	}
912
913	pszBuf[0] = ';';
914	pszBuf[1] = ' ';
915	}
916
917	return cchUsed;
918	}
919
920
921	/**
922	* @callback_method_impl{FNDISREADBYTES}
923	*
924	* @remarks @a uSrcAddr is the flat address.
925	*/
926	static DECLCALLBACK(int) disReadOpcodeBytes(PDISCPUSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead)
927	{
928	RTUINTPTR offBios = pDis->uInstrAddr + offInstr - g_uBiosFlatBase;
929	size_t cbToRead = cbMaxRead;
930	if (offBios + cbToRead > g_cbImg)
931	{
932	if (offBios >= g_cbImg)
933	cbToRead = 0;
934	else
935	cbToRead = g_cbImg - offBios;
936	}
937	memcpy(&pDis->abInstr[offInstr], &g_pbImg[offBios], cbToRead);
938	pDis->cbCachedInstr = (uint8_t)(offInstr + cbToRead);
939	return VINF_SUCCESS;
940	}
941
942
943	/**
944	* Disassembles code.
945	*
946	* @returns @c true on success, @c false on failure.
947	* @param uFlatAddr The address where the code starts.
948	* @param cb The amount of code to disassemble.
949	* @param fIs16Bit Is is 16-bit (@c true) or 32-bit (@c false).
950	*/
951	static bool disCode(uint32_t uFlatAddr, uint32_t cb, bool fIs16Bit)
952	{
953	uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
954
955	while (cb > 0)
956	{
957	/* Trailing zero padding detection. */
958	if ( *pb == '\0'
959	&& ASMMemIsZero(pb, RT_MIN(cb, 8)))
960	{
961	void *pv = ASMMemFirstNonZero(pb, cb);
962	uint32_t cbZeros = pv ? (uint32_t)((uint8_t const *)pv - pb) : cb;
963	if (!outputPrintf(" times %#x db 0\n", cbZeros))
964	return false;
965	cb -= cbZeros;
966	pb += cbZeros;
967	uFlatAddr += cbZeros;
968	if ( cb == 2
969	&& pb[0] == 'X'
970	&& pb[1] == 'M')
971	return disStringData(uFlatAddr, cb);
972	}
973	/* Work arounds for switch tables and such (disas assertions). */
974	else if ( 0
975	\|\| ( pb[0] == 0x50 /* int13_cdemu switch */
976	&& pb[1] == 0x4e
977	&& pb[2] == 0x49
978	&& pb[3] == 0x48
979	&& pb[4] == 0x47
980	)
981	\|\| ( pb[0] == 0x67 /* _pci16_function switch */
982	&& pb[1] == 0x92
983	&& pb[2] == 0x81
984	&& pb[3] == 0x92
985	&& pb[4] == 0x94
986	&& pb[5] == 0x92
987	)
988	\|\| ( pb[0] == 0xa3 /* _int1a_function switch */
989	&& pb[1] == 0x67
990	&& pb[2] == 0xca
991	&& pb[3] == 0x67
992	&& pb[4] == 0xef
993	&& pb[5] == 0x67
994	)
995	\|\| ( pb[0] == 0x0b /* _ahci_init byte table */
996	&& pb[1] == 0x05
997	&& pb[2] == 0x04
998	&& pb[3] == 0x03
999	&& pb[4] == 0x02
1000	&& pb[5] == 0x01
1001	)
1002	\|\| ( pb[0] == 0x00 /* bytes after apm_out_str_ */
1003	&& pb[1] == 0x00
1004	&& pb[2] == 0x00
1005	&& pb[3] == 0x00
1006	&& pb[4] == 0x00
1007	&& pb[5] == 0x00
1008	&& pb[6] == 0xe0
1009	&& pb[7] == 0xa0
1010	&& pb[8] == 0xe2
1011	&& pb[9] == 0xa0)
1012	\|\| ( pb[0] == 0xd4
1013	&& pb[1] == 0xc6
1014	&& pb[2] == 0xc5
1015	&& pb[3] == 0xba
1016	&& pb[4] == 0xb8
1017	&& pb[5] == 0xb6)
1018	\|\| ( pb[0] == 0xec /* _int15_function switch */
1019	&& pb[1] == 0xe9
1020	&& pb[2] == 0xd8
1021	&& pb[3] == 0xc1
1022	&& pb[4] == 0xc0
1023	&& pb[5] == 0xbf)
1024	\|\| ( pb[0] == 0x21 /* _int15_function32 switch */
1025	&& pb[1] == 0x66
1026	&& pb[2] == 0x43
1027	&& pb[3] == 0x66
1028	&& pb[4] == 0x66
1029	&& pb[5] == 0x66)
1030	\|\| 0
1031	)
1032	return disByteData(uFlatAddr, cb);
1033	else
1034	{
1035	unsigned cbInstr;
1036	DISCPUSTATE CpuState;
1037	int rc = DISInstrWithReader(uFlatAddr, fIs16Bit ? DISCPUMODE_16BIT : DISCPUMODE_32BIT,
1038	disReadOpcodeBytes, NULL, &CpuState, &cbInstr);
1039	if ( RT_SUCCESS(rc)
1040	&& cbInstr <= cb
1041	&& CpuState.pCurInstr
1042	&& CpuState.pCurInstr->uOpcode != OP_INVALID)
1043	{
1044	char szTmp[4096];
1045	size_t cch = DISFormatYasmEx(&CpuState, szTmp, sizeof(szTmp),
1046	DIS_FMT_FLAGS_STRICT
1047	\| DIS_FMT_FLAGS_BYTES_RIGHT \| DIS_FMT_FLAGS_BYTES_COMMENT \| DIS_FMT_FLAGS_BYTES_SPACED,
1048	NULL, NULL);
1049	cch = disHandleYasmDifferences(&CpuState, uFlatAddr, cbInstr, szTmp, sizeof(szTmp), cch);
1050	Assert(cch < sizeof(szTmp));
1051
1052	if (g_cVerbose > 1)
1053	{
1054	while (cch < 72)
1055	szTmp[cch++] = ' ';
1056	RTStrPrintf(&szTmp[cch], sizeof(szTmp) - cch, "; %#x", uFlatAddr);
1057	}
1058
1059	if (!outputPrintf(" %s\n", szTmp))
1060	return false;
1061	cb -= cbInstr;
1062	pb += cbInstr;
1063	uFlatAddr += cbInstr;
1064	}
1065	else
1066	{
1067	if (!disByteData(uFlatAddr, 1))
1068	return false;
1069	cb--;
1070	pb++;
1071	uFlatAddr++;
1072	}
1073	}
1074	}
1075	return true;
1076	}
1077
1078
1079	static bool disCodeSegment(uint32_t iSeg)
1080	{
1081	uint32_t uFlatAddr = g_aSegs[iSeg].uFlatAddr;
1082	uint32_t cb = g_aSegs[iSeg].cb;
1083
1084	while (cb > 0)
1085	{
1086	uint32_t off;
1087	RTDBGSYMBOL Sym;
1088	disGetNextSymbol(uFlatAddr, cb, &off, &Sym);
1089
1090	if (off > 0)
1091	{
1092	if (!disByteData(uFlatAddr, off))
1093	return false;
1094	cb -= off;
1095	uFlatAddr += off;
1096	off = 0;
1097	if (!cb)
1098	break;
1099	}
1100
1101	bool fRc;
1102	if (off == 0)
1103	{
1104	size_t cchName = strlen(Sym.szName);
1105	fRc = outputPrintf("%s: %*s; %#x LB %#x\n", Sym.szName, cchName < 41 - 2 ? cchName - 41 - 2 : 0, "", uFlatAddr, Sym.cb);
1106	if (!fRc)
1107	return false;
1108
1109	if (disIsCodeAndAdjustSize(uFlatAddr, &Sym, &g_aSegs[iSeg]))
1110	fRc = disCode(uFlatAddr, Sym.cb, disIs16BitCode(Sym.szName));
1111	else
1112	fRc = disByteData(uFlatAddr, Sym.cb);
1113
1114	uFlatAddr += Sym.cb;
1115	cb -= Sym.cb;
1116	}
1117	else
1118	{
1119	fRc = disByteData(uFlatAddr, cb);
1120	uFlatAddr += cb;
1121	cb = 0;
1122	}
1123	if (!fRc)
1124	return false;
1125	}
1126
1127	return true;
1128	}
1129
1130
1131	static RTEXITCODE DisassembleBiosImage(void)
1132	{
1133	if (!disFileHeader())
1134	return RTEXITCODE_FAILURE;
1135
1136	/*
1137	* Work the image segment by segment.
1138	*/
1139	bool fRc = true;
1140	uint32_t uFlatAddr = g_uBiosFlatBase;
1141	for (uint32_t iSeg = 0; iSeg < g_cSegs && fRc; iSeg++)
1142	{
1143	/* Is there a gap between the segments? */
1144	if (uFlatAddr < g_aSegs[iSeg].uFlatAddr)
1145	{
1146	fRc = disCopySegmentGap(uFlatAddr, g_aSegs[iSeg].uFlatAddr - uFlatAddr);
1147	if (!fRc)
1148	break;
1149	uFlatAddr = g_aSegs[iSeg].uFlatAddr;
1150	}
1151	else if (uFlatAddr > g_aSegs[iSeg].uFlatAddr)
1152	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Overlapping segments: %u and %u; uFlatAddr=%#x\n", iSeg - 1, iSeg, uFlatAddr);
1153
1154	/* Disassemble the segment. */
1155	fRc = outputPrintf("\n"
1156	"section %s progbits vstart=%#x align=1 ; size=%#x class=%s group=%s\n",
1157	g_aSegs[iSeg].szName, g_aSegs[iSeg].uFlatAddr - g_uBiosFlatBase,
1158	g_aSegs[iSeg].cb, g_aSegs[iSeg].szClass, g_aSegs[iSeg].szGroup);
1159	if (!fRc)
1160	return RTEXITCODE_FAILURE;
1161	if (!strcmp(g_aSegs[iSeg].szName, "CONST"))
1162	fRc = disConstSegment(iSeg);
1163	else if (!strcmp(g_aSegs[iSeg].szClass, "DATA"))
1164	fRc = disDataSegment(iSeg);
1165	else
1166	fRc = disCodeSegment(iSeg);
1167
1168	/* Advance. */
1169	uFlatAddr += g_aSegs[iSeg].cb;
1170	}
1171
1172	/* Final gap. */
1173	if (uFlatAddr < g_uBiosFlatBase + g_cbImg)
1174	fRc = disCopySegmentGap(uFlatAddr, (uint32_t)(g_uBiosFlatBase + g_cbImg - uFlatAddr));
1175	else if (uFlatAddr > g_uBiosFlatBase + g_cbImg)
1176	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Last segment spills beyond 1MB; uFlatAddr=%#x\n", uFlatAddr);
1177
1178	if (!fRc)
1179	return RTEXITCODE_FAILURE;
1180	return RTEXITCODE_SUCCESS;
1181	}
1182
1183
1184
1185	/**
1186	* Parses the symbol file for the BIOS.
1187	*
1188	* This is in ELF/DWARF format.
1189	*
1190	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
1191	* @param pszBiosSym Path to the sym file.
1192	*/
1193	static RTEXITCODE ParseSymFile(const char *pszBiosSym)
1194	{
1195	#if 1
1196	/** @todo use RTDbg* later. (Just checking for existance currently.) */
1197	PRTSTREAM hStrm;
1198	int rc = RTStrmOpen(pszBiosSym, "rb", &hStrm);
1199	if (RT_FAILURE(rc))
1200	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error opening '%s': %Rrc", pszBiosSym, rc);
1201	RTStrmClose(hStrm);
1202	#else
1203	RTDBGMOD hDbgMod;
1204	int rc = RTDbgModCreateFromImage(&hDbgMod, pszBiosSym, "VBoxBios", 0 /fFlags/);
1205	RTMsgInfo("RTDbgModCreateFromImage -> %Rrc\n", rc);
1206	#endif
1207	return RTEXITCODE_SUCCESS;
1208	}
1209
1210
1211	/**
1212	* Display an error with the mapfile name and current line, return false.
1213	*
1214	* @returns @c false.
1215	* @param pMap The map file handle.
1216	* @param pszFormat The format string.
1217	* @param ... Format arguments.
1218	*/
1219	static bool mapError(PBIOSMAP pMap, const char *pszFormat, ...)
1220	{
1221	va_list va;
1222	va_start(va, pszFormat);
1223	RTMsgError("%s:%d: %N", pMap->pszMapFile, pMap->iLine, pszFormat, va);
1224	va_end(va);
1225	return false;
1226	}
1227
1228
1229	/**
1230	* Reads a line from the file.
1231	*
1232	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1233	* @param pMap The map file handle.
1234	*/
1235	static bool mapReadLine(PBIOSMAP pMap)
1236	{
1237	int rc = RTStrmGetLine(pMap->hStrm, pMap->szLine, sizeof(pMap->szLine));
1238	if (RT_FAILURE(rc))
1239	{
1240	if (rc == VERR_EOF)
1241	{
1242	pMap->fEof = true;
1243	pMap->cch = 0;
1244	pMap->offNW = 0;
1245	pMap->szLine[0] = '\0';
1246	}
1247	else
1248	RTMsgError("%s:%d: Read error %Rrc", pMap->pszMapFile, pMap->iLine + 1, rc);
1249	return false;
1250	}
1251	pMap->iLine++;
1252	pMap->cch = (uint32_t)strlen(pMap->szLine);
1253
1254	/* Check out leading white space. */
1255	if (!RT_C_IS_SPACE(pMap->szLine[0]))
1256	pMap->offNW = 0;
1257	else
1258	{
1259	uint32_t off = 1;
1260	while (RT_C_IS_SPACE(pMap->szLine[off]))
1261	off++;
1262	pMap->offNW = off;
1263	}
1264
1265	return true;
1266	}
1267
1268
1269	/**
1270	* Checks if it is an empty line.
1271	* @returns @c true if empty, @c false if not.
1272	* @param pMap The map file handle.
1273	*/
1274	static bool mapIsEmptyLine(PBIOSMAP pMap)
1275	{
1276	Assert(pMap->offNW <= pMap->cch);
1277	return pMap->offNW == pMap->cch;
1278	}
1279
1280
1281	/**
1282	* Reads ahead in the map file until a non-empty line or EOF is encountered.
1283	*
1284	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1285	* @param pMap The map file handle.
1286	*/
1287	static bool mapSkipEmptyLines(PBIOSMAP pMap)
1288	{
1289	for (;;)
1290	{
1291	if (!mapReadLine(pMap))
1292	return false;
1293	if (pMap->offNW < pMap->cch)
1294	return true;
1295	}
1296	}
1297
1298
1299	/**
1300	* Reads ahead in the map file until an empty line or EOF is encountered.
1301	*
1302	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1303	* @param pMap The map file handle.
1304	*/
1305	static bool mapSkipNonEmptyLines(PBIOSMAP pMap)
1306	{
1307	for (;;)
1308	{
1309	if (!mapReadLine(pMap))
1310	return false;
1311	if (pMap->offNW == pMap->cch)
1312	return true;
1313	}
1314	}
1315
1316
1317	/**
1318	* Strips the current line.
1319	*
1320	* The string length may change.
1321	*
1322	* @returns Pointer to the first non-space character.
1323	* @param pMap The map file handle.
1324	* @param pcch Where to return the length of the unstripped
1325	* part. Optional.
1326	*/
1327	static char mapStripCurrentLine(PBIOSMAP pMap, size_t pcch)
1328	{
1329	char *psz = &pMap->szLine[pMap->offNW];
1330	char *pszEnd = &pMap->szLine[pMap->cch];
1331	while ( (uintptr_t)pszEnd > (uintptr_t)psz
1332	&& RT_C_IS_SPACE(pszEnd[-1]))
1333	{
1334	*--pszEnd = '\0';
1335	pMap->cch--;
1336	}
1337	if (pcch)
1338	*pcch = pszEnd - psz;
1339	return psz;
1340	}
1341
1342
1343	/**
1344	* Reads a line from the file and right strips it.
1345	*
1346	* @returns Pointer to szLine on success, @c NULL + msg on failure, @c NULL on
1347	* EOF.
1348	* @param pMap The map file handle.
1349	* @param pcch Where to return the length of the unstripped
1350	* part. Optional.
1351	*/
1352	static char mapReadLineStripRight(PBIOSMAP pMap, size_t pcch)
1353	{
1354	if (!mapReadLine(pMap))
1355	return NULL;
1356	mapStripCurrentLine(pMap, NULL);
1357	if (pcch)
1358	*pcch = pMap->cch;
1359	return pMap->szLine;
1360	}
1361
1362
1363	/**
1364	* mapReadLine() + mapStripCurrentLine().
1365	*
1366	* @returns Pointer to the first non-space character in the new line. NULL on
1367	* read error (bitched already) or end of file.
1368	* @param pMap The map file handle.
1369	* @param pcch Where to return the length of the unstripped
1370	* part. Optional.
1371	*/
1372	static char mapReadLineStrip(PBIOSMAP pMap, size_t pcch)
1373	{
1374	if (!mapReadLine(pMap))
1375	return NULL;
1376	return mapStripCurrentLine(pMap, pcch);
1377	}
1378
1379
1380	/**
1381	* Parses a word, copying it into the supplied buffer, and skipping any spaces
1382	* following it.
1383	*
1384	* @returns @c true on success, @c false on failure.
1385	* @param ppszCursor Pointer to the cursor variable.
1386	* @param pszBuf The output buffer.
1387	* @param cbBuf The size of the output buffer.
1388	*/
1389	static bool mapParseWord(char *ppszCursor, char pszBuf, size_t cbBuf)
1390	{
1391	/* Check that we start on a non-blank. */
1392	char pszStart = ppszCursor;
1393	if (!pszStart \|\| RT_C_IS_SPACE(pszStart))
1394	return false;
1395
1396	/* Find the end of the word. */
1397	char *psz = pszStart + 1;
1398	while (psz && !RT_C_IS_SPACE(psz))
1399	psz++;
1400
1401	/* Copy it. */
1402	size_t cchWord = (uintptr_t)psz - (uintptr_t)pszStart;
1403	if (cchWord >= cbBuf)
1404	return false;
1405	memcpy(pszBuf, pszStart, cchWord);
1406	pszBuf[cchWord] = '\0';
1407
1408	/* Skip blanks following it. */
1409	while (RT_C_IS_SPACE(*psz))
1410	psz++;
1411	*ppszCursor = psz;
1412	return true;
1413	}
1414
1415
1416	/**
1417	* Parses an 16:16 address.
1418	*
1419	* @returns @c true on success, @c false on failure.
1420	* @param ppszCursor Pointer to the cursor variable.
1421	* @param pAddr Where to return the address.
1422	*/
1423	static bool mapParseAddress(char **ppszCursor, PRTFAR16 pAddr)
1424	{
1425	char szWord[32];
1426	if (!mapParseWord(ppszCursor, szWord, sizeof(szWord)))
1427	return false;
1428	size_t cchWord = strlen(szWord);
1429
1430	/* An address is at least 16:16 format. It may be 16:32. It may also be flagged. */
1431	size_t cchAddr = 4 + 1 + 4;
1432	if (cchWord < cchAddr)
1433	return false;
1434	if ( !RT_C_IS_XDIGIT(szWord[0])
1435	\|\| !RT_C_IS_XDIGIT(szWord[1])
1436	\|\| !RT_C_IS_XDIGIT(szWord[2])
1437	\|\| !RT_C_IS_XDIGIT(szWord[3])
1438	\|\| szWord[4] != ':'
1439	\|\| !RT_C_IS_XDIGIT(szWord[5])
1440	\|\| !RT_C_IS_XDIGIT(szWord[6])
1441	\|\| !RT_C_IS_XDIGIT(szWord[7])
1442	\|\| !RT_C_IS_XDIGIT(szWord[8])
1443	)
1444	return false;
1445	if ( cchWord > cchAddr
1446	&& RT_C_IS_XDIGIT(szWord[9])
1447	&& RT_C_IS_XDIGIT(szWord[10])
1448	&& RT_C_IS_XDIGIT(szWord[11])
1449	&& RT_C_IS_XDIGIT(szWord[12]))
1450	cchAddr += 4;
1451
1452	/* Drop flag if present. */
1453	if (cchWord > cchAddr)
1454	{
1455	if (RT_C_IS_XDIGIT(szWord[cchAddr]))
1456	return false;
1457	szWord[cchAddr] = '\0';
1458	cchWord = cchAddr;
1459	}
1460
1461	/* Convert it. */
1462	szWord[4] = '\0';
1463	int rc1 = RTStrToUInt16Full(szWord, 16, &pAddr->sel);
1464	if (rc1 != VINF_SUCCESS)
1465	return false;
1466
1467	int rc2 = RTStrToUInt16Full(szWord + 5, 16, &pAddr->off);
1468	if (rc2 != VINF_SUCCESS)
1469	return false;
1470	return true;
1471	}
1472
1473
1474	/**
1475	* Parses a size.
1476	*
1477	* @returns @c true on success, @c false on failure.
1478	* @param ppszCursor Pointer to the cursor variable.
1479	* @param pcb Where to return the size.
1480	*/
1481	static bool mapParseSize(char *ppszCursor, uint32_t pcb)
1482	{
1483	char szWord[32];
1484	if (!mapParseWord(ppszCursor, szWord, sizeof(szWord)))
1485	return false;
1486	size_t cchWord = strlen(szWord);
1487	if (cchWord != 8)
1488	return false;
1489
1490	int rc = RTStrToUInt32Full(szWord, 16, pcb);
1491	if (rc != VINF_SUCCESS)
1492	return false;
1493	return true;
1494	}
1495
1496
1497	/**
1498	* Parses a section box and the following column header.
1499	*
1500	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1501	* @param pMap Map file handle.
1502	* @param pszSectionNm The expected section name.
1503	* @param cColumns The number of columns.
1504	* @param ... The column names.
1505	*/
1506	static bool mapSkipThruColumnHeadings(PBIOSMAP pMap, const char *pszSectionNm, uint32_t cColumns, ...)
1507	{
1508	if ( mapIsEmptyLine(pMap)
1509	&& !mapSkipEmptyLines(pMap))
1510	return false;
1511
1512	/* +------------+ */
1513	size_t cch;
1514	char *psz = mapStripCurrentLine(pMap, &cch);
1515	if (!psz)
1516	return false;
1517
1518	if ( psz[0] != '+'
1519	\|\| psz[1] != '-'
1520	\|\| psz[2] != '-'
1521	\|\| psz[3] != '-'
1522	\|\| psz[cch - 4] != '-'
1523	\|\| psz[cch - 3] != '-'
1524	\|\| psz[cch - 2] != '-'
1525	\|\| psz[cch - 1] != '+'
1526	)
1527	{
1528	RTMsgError("%s:%d: Expected section box: +-----...", pMap->pszMapFile, pMap->iLine);
1529	return false;
1530	}
1531
1532	/* \| pszSectionNm \| */
1533	psz = mapReadLineStrip(pMap, &cch);
1534	if (!psz)
1535	return false;
1536
1537	size_t cchSectionNm = strlen(pszSectionNm);
1538	if ( psz[0] != '\|'
1539	\|\| psz[1] != ' '
1540	\|\| psz[2] != ' '
1541	\|\| psz[3] != ' '
1542	\|\| psz[cch - 4] != ' '
1543	\|\| psz[cch - 3] != ' '
1544	\|\| psz[cch - 2] != ' '
1545	\|\| psz[cch - 1] != '\|'
1546	\|\| cch != 1 + 3 + cchSectionNm + 3 + 1
1547	\|\| strncmp(&psz[4], pszSectionNm, cchSectionNm)
1548	)
1549	{
1550	RTMsgError("%s:%d: Expected section box: \| %s \|", pMap->pszMapFile, pMap->iLine, pszSectionNm);
1551	return false;
1552	}
1553
1554	/* +------------+ */
1555	psz = mapReadLineStrip(pMap, &cch);
1556	if (!psz)
1557	return false;
1558	if ( psz[0] != '+'
1559	\|\| psz[1] != '-'
1560	\|\| psz[2] != '-'
1561	\|\| psz[3] != '-'
1562	\|\| psz[cch - 4] != '-'
1563	\|\| psz[cch - 3] != '-'
1564	\|\| psz[cch - 2] != '-'
1565	\|\| psz[cch - 1] != '+'
1566	)
1567	{
1568	RTMsgError("%s:%d: Expected section box: +-----...", pMap->pszMapFile, pMap->iLine);
1569	return false;
1570	}
1571
1572	/* There may be a few lines describing the table notation now, surrounded by blank lines. */
1573	do
1574	{
1575	psz = mapReadLineStripRight(pMap, &cch);
1576	if (!psz)
1577	return false;
1578	} while ( *psz == '\0'
1579	\|\| ( !RT_C_IS_SPACE(psz[0])
1580	&& RT_C_IS_SPACE(psz[1])
1581	&& psz[2] == '='
1582	&& RT_C_IS_SPACE(psz[3]))
1583	);
1584
1585	/* Should have the column heading now. */
1586	va_list va;
1587	va_start(va, cColumns);
1588	for (uint32_t i = 0; i < cColumns; i++)
1589	{
1590	const char pszColumn = va_arg(va, const char );
1591	size_t cchColumn = strlen(pszColumn);
1592	if ( strncmp(psz, pszColumn, cchColumn)
1593	\|\| ( psz[cchColumn] != '\0'
1594	&& !RT_C_IS_SPACE(psz[cchColumn])))
1595	{
1596	va_end(va);
1597	RTMsgError("%s:%d: Expected column '%s' found '%s'", pMap->pszMapFile, pMap->iLine, pszColumn, psz);
1598	return false;
1599	}
1600	psz += cchColumn;
1601	while (RT_C_IS_SPACE(*psz))
1602	psz++;
1603	}
1604	va_end(va);
1605
1606	/* The next line is the underlining. */
1607	psz = mapReadLineStripRight(pMap, &cch);
1608	if (!psz)
1609	return false;
1610	if (*psz != '=' \|\| psz[cch - 1] != '=')
1611	{
1612	RTMsgError("%s:%d: Expected column header underlining", pMap->pszMapFile, pMap->iLine);
1613	return false;
1614	}
1615
1616	/* Skip one blank line. */
1617	psz = mapReadLineStripRight(pMap, &cch);
1618	if (!psz)
1619	return false;
1620	if (*psz)
1621	{
1622	RTMsgError("%s:%d: Expected blank line beneath the column headers", pMap->pszMapFile, pMap->iLine);
1623	return false;
1624	}
1625
1626	return true;
1627	}
1628
1629
1630	/**
1631	* Parses a segment list.
1632	*
1633	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1634	* @param pMap The map file handle.
1635	*/
1636	static bool mapParseSegments(PBIOSMAP pMap)
1637	{
1638	for (;;)
1639	{
1640	if (!mapReadLineStripRight(pMap, NULL))
1641	return false;
1642
1643	/* The end? The line should be empty. Expectes segment name to not
1644	start with a space. */
1645	if (!pMap->szLine[0] \|\| RT_C_IS_SPACE(pMap->szLine[0]))
1646	{
1647	if (!pMap->szLine[0])
1648	return true;
1649	RTMsgError("%s:%u: Malformed segment line", pMap->pszMapFile, pMap->iLine);
1650	return false;
1651	}
1652
1653	/* Parse the segment line. */
1654	uint32_t iSeg = g_cSegs;
1655	if (iSeg >= RT_ELEMENTS(g_aSegs))
1656	{
1657	RTMsgError("%s:%u: Too many segments", pMap->pszMapFile, pMap->iLine);
1658	return false;
1659	}
1660
1661	char *psz = pMap->szLine;
1662	if (!mapParseWord(&psz, g_aSegs[iSeg].szName, sizeof(g_aSegs[iSeg].szName)))
1663	RTMsgError("%s:%u: Segment name parser error", pMap->pszMapFile, pMap->iLine);
1664	else if (!mapParseWord(&psz, g_aSegs[iSeg].szClass, sizeof(g_aSegs[iSeg].szClass)))
1665	RTMsgError("%s:%u: Segment class parser error", pMap->pszMapFile, pMap->iLine);
1666	else if (!mapParseWord(&psz, g_aSegs[iSeg].szGroup, sizeof(g_aSegs[iSeg].szGroup)))
1667	RTMsgError("%s:%u: Segment group parser error", pMap->pszMapFile, pMap->iLine);
1668	else if (!mapParseAddress(&psz, &g_aSegs[iSeg].Address))
1669	RTMsgError("%s:%u: Segment address parser error", pMap->pszMapFile, pMap->iLine);
1670	else if (!mapParseSize(&psz, &g_aSegs[iSeg].cb))
1671	RTMsgError("%s:%u: Segment size parser error", pMap->pszMapFile, pMap->iLine);
1672	else
1673	{
1674	g_aSegs[iSeg].uFlatAddr = ((uint32_t)g_aSegs[iSeg].Address.sel << 4) + g_aSegs[iSeg].Address.off;
1675	g_cSegs++;
1676	if (g_cVerbose > 2)
1677	RTStrmPrintf(g_pStdErr, "read segment at %08x / %04x:%04x LB %04x %s / %s / %s\n",
1678	g_aSegs[iSeg].uFlatAddr,
1679	g_aSegs[iSeg].Address.sel,
1680	g_aSegs[iSeg].Address.off,
1681	g_aSegs[iSeg].cb,
1682	g_aSegs[iSeg].szName,
1683	g_aSegs[iSeg].szClass,
1684	g_aSegs[iSeg].szGroup);
1685
1686	while (RT_C_IS_SPACE(*psz))
1687	psz++;
1688	if (!*psz)
1689	continue;
1690	RTMsgError("%s:%u: Junk at end of line", pMap->pszMapFile, pMap->iLine);
1691	}
1692	return false;
1693	}
1694	}
1695
1696
1697	/**
1698	* Sorts the segment array by flat address and adds them to the debug module.
1699	*
1700	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1701	*/
1702	static bool mapSortAndAddSegments(void)
1703	{
1704	for (uint32_t i = 0; i < g_cSegs; i++)
1705	{
1706	for (uint32_t j = i + 1; j < g_cSegs; j++)
1707	if (g_aSegs[j].uFlatAddr < g_aSegs[i].uFlatAddr)
1708	{
1709	BIOSSEG Tmp = g_aSegs[i];
1710	g_aSegs[i] = g_aSegs[j];
1711	g_aSegs[j] = Tmp;
1712	}
1713	if (g_cVerbose > 0)
1714	RTStrmPrintf(g_pStdErr, "segment at %08x / %04x:%04x LB %04x %s / %s / %s\n",
1715	g_aSegs[i].uFlatAddr,
1716	g_aSegs[i].Address.sel,
1717	g_aSegs[i].Address.off,
1718	g_aSegs[i].cb,
1719	g_aSegs[i].szName,
1720	g_aSegs[i].szClass,
1721	g_aSegs[i].szGroup);
1722
1723	RTDBGSEGIDX idx = i;
1724	int rc = RTDbgModSegmentAdd(g_hMapMod, g_aSegs[i].uFlatAddr, g_aSegs[i].cb, g_aSegs[i].szName, 0 /fFlags/, &idx);
1725	if (RT_FAILURE(rc))
1726	{
1727	RTMsgError("RTDbgModSegmentAdd failed on %s: %Rrc", g_aSegs[i].szName);
1728	return false;
1729	}
1730	}
1731	return true;
1732	}
1733
1734
1735	/**
1736	* Parses a segment list.
1737	*
1738	* @returns @c true on success, @c false + msg on failure, @c false on eof.
1739	* @param pMap The map file handle.
1740	*/
1741	static bool mapParseSymbols(PBIOSMAP pMap)
1742	{
1743	for (;;)
1744	{
1745	if (!mapReadLineStripRight(pMap, NULL))
1746	return false;
1747
1748	/* The end? The line should be empty. Expectes segment name to not
1749	start with a space. */
1750	if (!pMap->szLine[0] \|\| RT_C_IS_SPACE(pMap->szLine[0]))
1751	{
1752	if (!pMap->szLine[0])
1753	return true;
1754	return mapError(pMap, "Malformed symbol line");
1755	}
1756
1757	if (!strncmp(pMap->szLine, RT_STR_TUPLE("Module: ")))
1758	{
1759	/* Parse the module line. */
1760	size_t offObj = sizeof("Module: ") - 1;
1761	while (RT_C_IS_SPACE(pMap->szLine[offObj]))
1762	offObj++;
1763	size_t offSrc = offObj;
1764	char ch;
1765	while ((ch = pMap->szLine[offSrc]) != '(' && ch != '\0')
1766	offSrc++;
1767	size_t cchObj = offSrc - offObj;
1768
1769	offSrc++;
1770	size_t cchSrc = offSrc;
1771	while ((ch = pMap->szLine[cchSrc]) != ')' && ch != '\0')
1772	cchSrc++;
1773	cchSrc -= offSrc;
1774	if (ch != ')')
1775	return mapError(pMap, "Symbol/Module line parse error");
1776
1777	PBIOSOBJFILE pObjFile = (PBIOSOBJFILE)RTMemAllocZ(sizeof(*pObjFile) + cchSrc + cchObj + 2);
1778	if (!pObjFile)
1779	return mapError(pMap, "Out of memory");
1780	char psz = (char )(pObjFile + 1);
1781	pObjFile->pszObject = psz;
1782	memcpy(psz, &pMap->szLine[offObj], cchObj);
1783	psz += cchObj;
1784	*psz++ = '\0';
1785	pObjFile->pszSource = psz;
1786	memcpy(psz, &pMap->szLine[offSrc], cchSrc);
1787	psz[cchSrc] = '\0';
1788	RTListAppend(&g_ObjList, &pObjFile->Node);
1789	}
1790	else
1791	{
1792	/* Parse the segment line. */
1793	RTFAR16 Addr;
1794	char *psz = pMap->szLine;
1795	if (!mapParseAddress(&psz, &Addr))
1796	return mapError(pMap, "Symbol address parser error");
1797
1798	char szName[4096];
1799	if (!mapParseWord(&psz, szName, sizeof(szName)))
1800	return mapError(pMap, "Symbol name parser error");
1801
1802	uint32_t uFlatAddr = ((uint32_t)Addr.sel << 4) + Addr.off;
1803	if (uFlatAddr != 0)
1804	{
1805	int rc = RTDbgModSymbolAdd(g_hMapMod, szName, RTDBGSEGIDX_RVA, uFlatAddr, 0 /cb/, 0 /fFlags/, NULL);
1806	if (RT_FAILURE(rc) && rc != VERR_DBG_ADDRESS_CONFLICT)
1807	{
1808	/* HACK ALERT! For dealing with lables at segment size. / /* @todo fix end labels. */
1809	rc = RTDbgModSymbolAdd(g_hMapMod, szName, RTDBGSEGIDX_RVA, uFlatAddr - 1, 0 /cb/, 0 /fFlags/, NULL);
1810	if (RT_FAILURE(rc) && rc != VERR_DBG_ADDRESS_CONFLICT)
1811	return mapError(pMap, "RTDbgModSymbolAdd failed: %Rrc", rc);
1812	}
1813
1814	if (g_cVerbose > 2)
1815	RTStrmPrintf(g_pStdErr, "read symbol - %08x %s\n", uFlatAddr, szName);
1816	while (RT_C_IS_SPACE(*psz))
1817	psz++;
1818	if (*psz)
1819	return mapError(pMap, "Junk at end of line");
1820	}
1821
1822	}
1823	}
1824	}
1825
1826
1827	/**
1828	* Parses the given map file.
1829	*
1830	* @returns RTEXITCODE_SUCCESS and lots of globals, or RTEXITCODE_FAILURE and a
1831	* error message.
1832	* @param pMap The map file handle.
1833	*/
1834	static RTEXITCODE mapParseFile(PBIOSMAP pMap)
1835	{
1836	int rc = RTDbgModCreate(&g_hMapMod, "VBoxBios", 0 /cbSeg/, 0 /fFlags/);
1837	if (RT_FAILURE(rc))
1838	return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTDbgModCreate failed: %Rrc", rc);
1839
1840	/*
1841	* Read the header.
1842	*/
1843	if (!mapReadLine(pMap))
1844	return RTEXITCODE_FAILURE;
1845	if (strncmp(pMap->szLine, RT_STR_TUPLE("Open Watcom Linker Version")))
1846	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Unexpected map-file header: '%s'", pMap->szLine);
1847	if ( !mapSkipNonEmptyLines(pMap)
1848	\|\| !mapSkipEmptyLines(pMap))
1849	return RTEXITCODE_FAILURE;
1850
1851	/*
1852	* Skip groups.
1853	*/
1854	if (!mapSkipThruColumnHeadings(pMap, "Groups", 3, "Group", "Address", "Size", NULL))
1855	return RTEXITCODE_FAILURE;
1856	if (!mapSkipNonEmptyLines(pMap))
1857	return RTEXITCODE_FAILURE;
1858
1859	/*
1860	* Parse segments.
1861	*/
1862	if (!mapSkipThruColumnHeadings(pMap, "Segments", 5, "Segment", "Class", "Group", "Address", "Size"))
1863	return RTEXITCODE_FAILURE;
1864	if (!mapParseSegments(pMap))
1865	return RTEXITCODE_FAILURE;
1866	if (!mapSortAndAddSegments())
1867	return RTEXITCODE_FAILURE;
1868
1869	/*
1870	* Parse symbols.
1871	*/
1872	if (!mapSkipThruColumnHeadings(pMap, "Memory Map", 2, "Address", "Symbol"))
1873	return RTEXITCODE_FAILURE;
1874	if (!mapParseSymbols(pMap))
1875	return RTEXITCODE_FAILURE;
1876
1877	/* Ignore the rest of the file. */
1878	return RTEXITCODE_SUCCESS;
1879	}
1880
1881
1882	/**
1883	* Parses the linker map file for the BIOS.
1884	*
1885	* This is generated by the Watcom linker.
1886	*
1887	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
1888	* @param pszBiosMap Path to the map file.
1889	*/
1890	static RTEXITCODE ParseMapFile(const char *pszBiosMap)
1891	{
1892	BIOSMAP Map;
1893	Map.pszMapFile = pszBiosMap;
1894	Map.hStrm = NULL;
1895	Map.iLine = 0;
1896	Map.fEof = false;
1897	Map.cch = 0;
1898	Map.offNW = 0;
1899	int rc = RTStrmOpen(pszBiosMap, "r", &Map.hStrm);
1900	if (RT_FAILURE(rc))
1901	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error opening '%s': %Rrc", pszBiosMap, rc);
1902	RTEXITCODE rcExit = mapParseFile(&Map);
1903	RTStrmClose(Map.hStrm);
1904	return rcExit;
1905	}
1906
1907
1908	/**
1909	* Reads the BIOS image into memory (g_pbImg and g_cbImg).
1910	*
1911	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
1912	* @param pszBiosImg Path to the image file.
1913	*/
1914	static RTEXITCODE ReadBiosImage(const char *pszBiosImg)
1915	{
1916	void *pvImg;
1917	size_t cbImg;
1918	int rc = RTFileReadAll(pszBiosImg, &pvImg, &cbImg);
1919	if (RT_FAILURE(rc))
1920	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error reading '%s': %Rrc", pszBiosImg, rc);
1921
1922	size_t cbImgExpect;
1923	switch (g_enmBiosType)
1924	{
1925	case kBiosType_System: cbImgExpect = _64K; break;
1926	case kBiosType_Vga: cbImgExpect = _32K; break;
1927	default: cbImgExpect = 0; break;
1928	}
1929	if (cbImg != cbImgExpect)
1930	{
1931	RTFileReadAllFree(pvImg, cbImg);
1932	return RTMsgErrorExit(RTEXITCODE_FAILURE, "The BIOS image %u bytes intead of %u bytes", cbImg, cbImgExpect);
1933	}
1934
1935	g_pbImg = (uint8_t *)pvImg;
1936	g_cbImg = cbImg;
1937	return RTEXITCODE_SUCCESS;
1938	}
1939
1940
1941	int main(int argc, char **argv)
1942	{
1943	int rc = RTR3InitExe(argc, &argv, 0);
1944	if (RT_FAILURE(rc))
1945	return RTMsgInitFailure(rc);
1946
1947	RTListInit(&g_ObjList);
1948
1949	/*
1950	* Option config.
1951	*/
1952	static RTGETOPTDEF const s_aOpts[] =
1953	{
1954	{ "--bios-image", 'i', RTGETOPT_REQ_STRING },
1955	{ "--bios-map", 'm', RTGETOPT_REQ_STRING },
1956	{ "--bios-sym", 's', RTGETOPT_REQ_STRING },
1957	{ "--bios-type", 't', RTGETOPT_REQ_STRING },
1958	{ "--output", 'o', RTGETOPT_REQ_STRING },
1959	{ "--verbose", 'v', RTGETOPT_REQ_NOTHING },
1960	{ "--quiet", 'q', RTGETOPT_REQ_NOTHING },
1961	};
1962
1963	const char *pszBiosMap = NULL;
1964	const char *pszBiosSym = NULL;
1965	const char *pszBiosImg = NULL;
1966	const char *pszOutput = NULL;
1967
1968	RTGETOPTUNION ValueUnion;
1969	RTGETOPTSTATE GetOptState;
1970	rc = RTGetOptInit(&GetOptState, argc, argv, &s_aOpts[0], RT_ELEMENTS(s_aOpts), 1, RTGETOPTINIT_FLAGS_OPTS_FIRST);
1971	AssertReleaseRCReturn(rc, RTEXITCODE_FAILURE);
1972
1973	/*
1974	* Process the options.
1975	*/
1976	while ((rc = RTGetOpt(&GetOptState, &ValueUnion)) != 0)
1977	{
1978	switch (rc)
1979	{
1980	case 'i':
1981	if (pszBiosImg)
1982	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-image is given more than once");
1983	pszBiosImg = ValueUnion.psz;
1984	break;
1985
1986	case 'm':
1987	if (pszBiosMap)
1988	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-map is given more than once");
1989	pszBiosMap = ValueUnion.psz;
1990	break;
1991
1992	case 's':
1993	if (pszBiosSym)
1994	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-sym is given more than once");
1995	pszBiosSym = ValueUnion.psz;
1996	break;
1997
1998	case 'o':
1999	if (pszOutput)
2000	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--output is given more than once");
2001	pszOutput = ValueUnion.psz;
2002	break;
2003
2004	case 't':
2005	if (!strcmp(ValueUnion.psz, "system"))
2006	{
2007	g_enmBiosType = kBiosType_System;
2008	g_uBiosFlatBase = 0xf0000;
2009	}
2010	else if (!strcmp(ValueUnion.psz, "vga"))
2011	{
2012	g_enmBiosType = kBiosType_Vga;
2013	g_uBiosFlatBase = 0xc0000;
2014	}
2015	else
2016	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Unknown bios type '%s'", ValueUnion.psz);
2017	break;
2018
2019	case 'v':
2020	g_cVerbose++;
2021	break;
2022
2023	case 'q':
2024	g_cVerbose = 0;
2025	break;
2026
2027	case 'H':
2028	RTPrintf("usage: %Rbn --bios-image <file.img> --bios-map <file.map> [--output <file.asm>]\n",
2029	argv[0]);
2030	return RTEXITCODE_SUCCESS;
2031
2032	case 'V':
2033	{
2034	/* The following is assuming that svn does it's job here. */
2035	char szRev[] = "$Revision: 62450 $";
2036	char *psz = szRev;
2037	while (psz && !RT_C_IS_DIGIT(psz))
2038	psz++;
2039	size_t i = strlen(psz);
2040	while (i > 0 && !RT_C_IS_DIGIT(psz[i - 1]))
2041	psz[--i] = '\0';
2042
2043	RTPrintf("r%s\n", psz);
2044	return RTEXITCODE_SUCCESS;
2045	}
2046
2047	default:
2048	return RTGetOptPrintError(rc, &ValueUnion);
2049	}
2050	}
2051
2052	/*
2053	* Got it all?
2054	*/
2055	if (!pszBiosImg)
2056	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-image is required");
2057	if (!pszBiosMap)
2058	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-map is required");
2059	if (!pszBiosSym)
2060	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-sym is required");
2061
2062	/*
2063	* Do the job.
2064	*/
2065	RTEXITCODE rcExit;
2066	rcExit = ReadBiosImage(pszBiosImg);
2067	if (rcExit == RTEXITCODE_SUCCESS)
2068	rcExit = ParseMapFile(pszBiosMap);
2069	if (rcExit == RTEXITCODE_SUCCESS)
2070	rcExit = ParseSymFile(pszBiosSym);
2071	if (rcExit == RTEXITCODE_SUCCESS)
2072	rcExit = OpenOutputFile(pszOutput);
2073	if (rcExit == RTEXITCODE_SUCCESS)
2074	rcExit = DisassembleBiosImage();
2075
2076	return rcExit;
2077	}
2078

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source: vbox/trunk/src/VBox/Devices/BiosCommonCode/MakeAlternativeSource.cpp@ 62450

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