VBoxDef2LazyLoad.cpp@ 100111

Last change on this file since 100111 was 99552, checked in by vboxsync, 19 months ago
VBoxDef2LazyLoad: Use g_LazyPtr_ instead of g_p as prefix for data symbol pointers, as these are in the global space. Improved the documentation a little bit.
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File size: 66.9 KB

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1	/* $Id: VBoxDef2LazyLoad.cpp 99552 2023-04-27 20:16:20Z vboxsync $ */
2	/** @file
3	* VBoxDef2LazyLoad - Lazy Library Loader Generator.
4	*
5	* @note Only tested on win.amd64 & darwin.amd64.
6	*/
7
8	/*
9	* Copyright (C) 2013-2023 Oracle and/or its affiliates.
10	*
11	* This file is part of VirtualBox base platform packages, as
12	* available from https://www.virtualbox.org.
13	*
14	* This program is free software; you can redistribute it and/or
15	* modify it under the terms of the GNU General Public License
16	* as published by the Free Software Foundation, in version 3 of the
17	* License.
18	*
19	* This program is distributed in the hope that it will be useful, but
20	* WITHOUT ANY WARRANTY; without even the implied warranty of
21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22	* General Public License for more details.
23	*
24	* You should have received a copy of the GNU General Public License
25	* along with this program; if not, see <https://www.gnu.org/licenses>.
26	*
27	* SPDX-License-Identifier: GPL-3.0-only
28	*/
29
30
31	/*********************************************************************************************************************************
32	* Header Files *
33	*********************************************************************************************************************************/
34	#include <ctype.h>
35	#include <stdio.h>
36	#include <string.h>
37	#include <stdlib.h>
38	#include <iprt/types.h>
39	#include <iprt/ldr.h> /* For RTLDRARCH. */
40
41
42	/*********************************************************************************************************************************
43	* Structures and Typedefs *
44	*********************************************************************************************************************************/
45	typedef struct MYEXPORT
46	{
47	struct MYEXPORT *pNext;
48	/** Pointer to unmangled name for stdcall (after szName), NULL if not. */
49	char *pszUnstdcallName;
50	/** Pointer to the exported name. */
51	char const *pszExportedNm;
52	unsigned uOrdinal;
53	/** NONAME. */
54	bool fNoName;
55	/** DATA symbol if true, otherwise function. */
56	bool fData;
57	char szName[1];
58	} MYEXPORT;
59	typedef MYEXPORT *PMYEXPORT;
60
61
62	/*********************************************************************************************************************************
63	* Global Variables *
64	*********************************************************************************************************************************/
65	/** @name Options
66	* @{ */
67	static const char *g_pszOutput = NULL;
68	static const char *g_pszLibrary = NULL;
69	static const char *g_apszInputs[8] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
70	static unsigned g_cInputs = 0;
71	static bool g_fIgnoreData = true;
72	static bool g_fWithExplictLoadFunction = false;
73	static bool g_fSystemLibrary = false;
74	#if defined(RT_ARCH_AMD64)
75	static RTLDRARCH g_enmTarget = RTLDRARCH_AMD64;
76	#elif defined(RT_ARCH_X86)
77	static RTLDRARCH g_enmTarget = RTLDRARCH_X86_32;
78	#elif defined(RT_ARCH_ARM64)
79	static RTLDRARCH g_enmTarget = RTLDRARCH_ARM64;
80	#else
81	# error "Port me!"
82	#endif
83	/** @} */
84
85	/** Pointer to the export name list head. */
86	static PMYEXPORT g_pExpHead = NULL;
87	/** Pointer to the next pointer for insertion. */
88	static PMYEXPORT *g_ppExpNext = &g_pExpHead;
89
90
91
92	#if 0 /* unused */
93	static const char leftStrip(const char psz)
94	{
95	while (isspace(*psz))
96	psz++;
97	return psz;
98	}
99	#endif
100
101
102	static char leftStrip(char psz)
103	{
104	while (isspace(*psz))
105	psz++;
106	return psz;
107	}
108
109
110	static unsigned wordLength(const char *pszWord)
111	{
112	unsigned off = 0;
113	char ch;
114	while ( (ch = pszWord[off]) != '\0'
115	&& ch != '='
116	&& ch != ','
117	&& ch != ':'
118	&& !isspace(ch) )
119	off++;
120	return off;
121	}
122
123
124	/**
125	* Parses the module definition file, collecting export information.
126	*
127	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE, in the latter case full
128	* details has been displayed.
129	* @param pInput The input stream.
130	*/
131	static RTEXITCODE parseInputInner(FILE pInput, const char pszInput)
132	{
133	/*
134	* Process the file line-by-line.
135	*/
136	bool fInExports = false;
137	unsigned iLine = 0;
138	char szLine[16384];
139	while (fgets(szLine, sizeof(szLine), pInput))
140	{
141	iLine++;
142
143	/*
144	* Strip leading and trailing spaces from the line as well as
145	* trailing comments.
146	*/
147	char *psz = leftStrip(szLine);
148	if (*psz == ';')
149	continue; /* comment line. */
150
151	char *pszComment = strchr(psz, ';');
152	if (pszComment)
153	*pszComment = '\0';
154
155	unsigned cch = (unsigned)strlen(psz);
156	while (cch > 0 && (isspace(psz[cch - 1]) \|\| psz[cch - 1] == '\r' \|\| psz[cch - 1] == '\n'))
157	psz[--cch] = '\0';
158
159	if (!cch)
160	continue;
161
162	/*
163	* Check for known directives.
164	*/
165	size_t cchWord0 = wordLength(psz);
166	#define WORD_CMP(pszWord1, cchWord1, szWord2) \
167	( (cchWord1) == sizeof(szWord2) - 1 && memcmp(pszWord1, szWord2, sizeof(szWord2) - 1) == 0 )
168	if (WORD_CMP(psz, cchWord0, "EXPORTS"))
169	{
170	fInExports = true;
171
172	/* In case there is an export on the same line. (Really allowed?) */
173	psz = leftStrip(psz + sizeof("EXPORTS") - 1);
174	if (!*psz)
175	continue;
176	}
177	/* Directives that we don't care about, but need to catch in order to
178	terminate the EXPORTS section in a timely manner. */
179	else if ( WORD_CMP(psz, cchWord0, "NAME")
180	\|\| WORD_CMP(psz, cchWord0, "LIBRARY")
181	\|\| WORD_CMP(psz, cchWord0, "DESCRIPTION")
182	\|\| WORD_CMP(psz, cchWord0, "STACKSIZE")
183	\|\| WORD_CMP(psz, cchWord0, "SECTIONS")
184	\|\| WORD_CMP(psz, cchWord0, "SEGMENTS")
185	\|\| WORD_CMP(psz, cchWord0, "VERSION")
186	)
187	{
188	fInExports = false;
189	}
190
191	/*
192	* Process exports:
193	* entryname[=internalname] [@ordinal[ ][NONAME]] [DATA] [PRIVATE]
194	*/
195	if (fInExports)
196	{
197	const char *pchName = psz;
198	unsigned cchName = wordLength(psz);
199
200	psz = leftStrip(psz + cchName);
201	if (*psz == '=')
202	{
203	psz = leftStrip(psz + 1);
204	psz = leftStrip(psz + wordLength(psz));
205	}
206
207	bool fNoName = false;
208	unsigned uOrdinal = ~0U;
209	if (*psz == '@')
210	{
211	psz++;
212	if (!isdigit(*psz))
213	{
214	fprintf(stderr, "%s:%u: error: Invalid ordinal spec.\n", pszInput, iLine);
215	return RTEXITCODE_FAILURE;
216	}
217	uOrdinal = *psz++ - '0';
218	while (isdigit(*psz))
219	{
220	uOrdinal *= 10;
221	uOrdinal += *psz++ - '0';
222	}
223	psz = leftStrip(psz);
224	cch = wordLength(psz);
225	if (WORD_CMP(psz, cch, "NONAME"))
226	{
227	fNoName = true;
228	psz = leftStrip(psz + cch);
229	}
230	}
231
232	bool fData = false;
233	while (*psz)
234	{
235	cch = wordLength(psz);
236	if (WORD_CMP(psz, cch, "DATA"))
237	{
238	fData = true;
239	if (!g_fIgnoreData)
240	{
241	fprintf(stderr, "%s:%u: error: Cannot process DATA export '%.*s'.\n",
242	pszInput, iLine, cchName, pchName);
243	return RTEXITCODE_SUCCESS;
244	}
245	}
246	else if (WORD_CMP(psz, cch, "PRIVATE"))
247	{
248	fprintf(stderr, "%s:%u: error: Cannot process PRIVATE export '%.*s'.\n",
249	pszInput, iLine, cchName, pchName);
250	return RTEXITCODE_SUCCESS;
251	}
252	else
253	{
254	fprintf(stderr, "%s:%u: error: Unknown keyword: %.*s.\n", pszInput, iLine, cch, psz);
255	return RTEXITCODE_FAILURE;
256	}
257	psz = leftStrip(psz + cch);
258	}
259
260	/*
261	* Check for stdcall mangling.
262	*/
263	size_t cbExp = sizeof(MYEXPORT) + cchName;
264	unsigned cchStdcall = 0;
265	if (cchName > 3 && *pchName == '_' && isdigit(pchName[cchName - 1]))
266	{
267	if (cchName > 3 && pchName[cchName - 2] == '@')
268	cchStdcall = 2;
269	else if (cchName > 4 && pchName[cchName - 3] == '@' && isdigit(pchName[cchName - 2]))
270	cchStdcall = 3;
271	if (cchStdcall)
272	cbExp += cchName - 1 - cchStdcall;
273	}
274
275	/*
276	* Add the export.
277	*/
278	PMYEXPORT pExp = (PMYEXPORT)malloc(cbExp);
279	if (!pExp)
280	{
281	fprintf(stderr, "%s:%u: error: Out of memory.\n", pszInput, iLine);
282	return RTEXITCODE_FAILURE;
283	}
284	memcpy(pExp->szName, pchName, cchName);
285	pExp->szName[cchName] = '\0';
286	if (!cchStdcall)
287	{
288	pExp->pszUnstdcallName = NULL;
289	pExp->pszExportedNm = pExp->szName;
290	}
291	else
292	{
293	pExp->pszUnstdcallName = &pExp->szName[cchName + 1];
294	memcpy(pExp->pszUnstdcallName, pchName + 1, cchName - 1 - cchStdcall);
295	pExp->pszUnstdcallName[cchName - 1 - cchStdcall] = '\0';
296	pExp->pszExportedNm = pExp->pszUnstdcallName;
297	}
298	pExp->uOrdinal = uOrdinal;
299	pExp->fNoName = fNoName;
300	pExp->fData = fData;
301	pExp->pNext = NULL;
302	*g_ppExpNext = pExp;
303	g_ppExpNext = &pExp->pNext;
304	}
305	}
306
307	/*
308	* Why did we quit the loop, EOF or error?
309	*/
310	if (feof(pInput))
311	return RTEXITCODE_SUCCESS;
312	fprintf(stderr, "error: Incompletely read '%s' (iLine=%u).\n", pszInput, iLine);
313	return RTEXITCODE_FAILURE;
314	}
315
316
317	/**
318	* Parses a_apszInputs, populating the list pointed to by g_pExpHead.
319	*
320	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE, in the latter case full
321	* details has been displayed.
322	*/
323	static RTEXITCODE parseInputs(void)
324	{
325	RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
326	for (unsigned i = 0; i < g_cInputs; i++)
327	{
328	FILE *pInput = fopen(g_apszInputs[i], "r");
329	if (pInput)
330	{
331	RTEXITCODE rcExit2 = parseInputInner(pInput, g_apszInputs[i]);
332	fclose(pInput);
333	if (rcExit2 == RTEXITCODE_SUCCESS && !g_pExpHead)
334	{
335	fprintf(stderr, "error: Found no exports in '%s'.\n", g_apszInputs[i]);
336	rcExit2 = RTEXITCODE_FAILURE;
337	}
338	if (rcExit2 != RTEXITCODE_SUCCESS)
339	rcExit = rcExit2;
340	}
341	else
342	{
343	fprintf(stderr, "error: Failed to open '%s' for reading.\n", g_apszInputs[i]);
344	rcExit = RTEXITCODE_FAILURE;
345	}
346	}
347	return rcExit;
348	}
349
350
351	/**
352	* Generates the assembly source code for AMD64 and x86, writing it
353	* to @a pOutput.
354	*
355	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE, in the latter case full
356	* details has been displayed.
357	* @param pOutput The output stream (caller checks it for errors
358	* when closing).
359	*/
360	static RTEXITCODE generateOutputInnerX86AndAMD64(FILE *pOutput)
361	{
362	fprintf(pOutput, ";;\n");
363	for (unsigned i = 0; i < g_cInputs; i++)
364	fprintf(pOutput, ";; Autogenerated from '%s'.\n", g_apszInputs[i]);
365
366	fprintf(pOutput,
367	";; DO NOT EDIT!\n"
368	";;\n"
369	"\n"
370	"\n"
371	"%%include \"iprt/asmdefs.mac\"\n"
372	"\n"
373	"\n");
374
375	/*
376	* Put the thunks first for alignment and other reasons. It's the hot part of the code.
377	*/
378	fprintf(pOutput,
379	";\n"
380	"; Thunks.\n"
381	";\n"
382	"BEGINCODE\n");
383	for (PMYEXPORT pExp = g_pExpHead; pExp; pExp = pExp->pNext)
384	if (pExp->fData)
385	fprintf(pOutput,
386	"BEGINPROC LazyGetPtr_%s\n"
387	" mov xAX, [NAME(g_LazyPtr_%s) xWrtRIP]\n"
388	" test xAX, xAX\n"
389	" jz ___LazyLoad___%s\n"
390	" ret\n"
391	"ENDPROC LazyGetPtr_%s\n",
392	pExp->szName, pExp->szName, pExp->szName, pExp->szName);
393	else if (!pExp->pszUnstdcallName)
394	fprintf(pOutput,
395	"BEGINPROC %s\n"
396	" jmp RTCCPTR_PRE [NAME(g_pfn%s) xWrtRIP]\n"
397	"ENDPROC %s\n",
398	pExp->szName, pExp->szName, pExp->szName);
399	else
400	fprintf(pOutput,
401	"%%ifdef RT_ARCH_X86\n"
402	"global %s\n"
403	"%s:\n"
404	" jmp RTCCPTR_PRE [NAME(g_pfn%s) xWrtRIP]\n"
405	"%%else\n"
406	"BEGINPROC %s\n"
407	" jmp RTCCPTR_PRE [NAME(g_pfn%s) xWrtRIP]\n"
408	"ENDPROC %s\n"
409	"%%endif\n",
410	pExp->szName, pExp->szName, pExp->pszUnstdcallName,
411	pExp->pszUnstdcallName, pExp->pszUnstdcallName, pExp->pszUnstdcallName);
412
413	fprintf(pOutput,
414	"\n"
415	"\n");
416
417	/*
418	* Import pointers
419	*/
420	fprintf(pOutput,
421	";\n"
422	"; Import pointers. Initialized to point to lazy loading stubs.\n"
423	";\n"
424	"BEGINDATA\n"
425	"g_apfnImports:\n");
426	for (PMYEXPORT pExp = g_pExpHead; pExp; pExp = pExp->pNext)
427	if (pExp->fData)
428	fprintf(pOutput,
429	"%%ifdef ASM_FORMAT_PE\n"
430	";@todo\n"
431	"%%endif\n"
432	"global NAME(g_LazyPtr_%s)\n"
433	"NAME(g_LazyPtr_%s): RTCCPTR_DEF 0\n",
434	pExp->pszExportedNm, pExp->pszExportedNm);
435	else if (pExp->pszUnstdcallName)
436	fprintf(pOutput,
437	"%%ifdef ASM_FORMAT_PE\n"
438	" %%ifdef RT_ARCH_X86\n"
439	"global __imp_%s\n"
440	"__imp_%s:\n"
441	" %%else\n"
442	"global __imp_%s\n"
443	"__imp_%s:\n"
444	" %%endif\n"
445	"%%endif\n"
446	"NAME(g_pfn%s) RTCCPTR_DEF ___LazyLoad___%s\n"
447	"\n",
448	pExp->szName,
449	pExp->szName,
450	pExp->pszUnstdcallName,
451	pExp->pszUnstdcallName,
452	pExp->pszExportedNm,
453	pExp->pszExportedNm);
454	else
455	fprintf(pOutput,
456	"%%ifdef ASM_FORMAT_PE\n"
457	"global __imp_%s\n"
458	"__imp_%s:\n"
459	"%%endif\n"
460	"NAME(g_pfn%s) RTCCPTR_DEF ___LazyLoad___%s\n"
461	"\n",
462	pExp->szName,
463	pExp->szName,
464	pExp->pszExportedNm,
465	pExp->pszExportedNm);
466	fprintf(pOutput,
467	"RTCCPTR_DEF 0 ; Terminator entry for traversal.\n"
468	"\n"
469	"\n");
470
471	/*
472	* Now for the less important stuff, starting with the names.
473	*
474	* We keep the names separate so we can traverse them in parallel to
475	* g_apfnImports in the load-everything routine further down.
476	*/
477	fprintf(pOutput,
478	";\n"
479	"; Imported names.\n"
480	";\n"
481	"BEGINCODE\n"
482	"g_szLibrary: db '%s',0\n"
483	"\n"
484	"g_szzNames:\n",
485	g_pszLibrary);
486	for (PMYEXPORT pExp = g_pExpHead; pExp; pExp = pExp->pNext)
487	if (!pExp->fNoName)
488	fprintf(pOutput, " g_sz%s:\n db '%s',0\n", pExp->pszExportedNm, pExp->pszExportedNm);
489	else
490	fprintf(pOutput, " g_sz%s:\n db '#%u',0\n", pExp->pszExportedNm, pExp->uOrdinal);
491	fprintf(pOutput,
492	"g_EndOfNames: db 0\n"
493	"\n"
494	"g_szFailLoadFmt: db 'Lazy loader failed to load \"%%s\": %%Rrc', 10, 0\n"
495	"g_szFailResolveFmt: db 'Lazy loader failed to resolve symbol \"%%s\" in \"%%s\": %%Rrc', 10, 0\n"
496	"\n"
497	"\n");
498
499	/*
500	* The per import lazy load code.
501	*/
502	fprintf(pOutput,
503	";\n"
504	"; Lazy load+resolve stubs.\n"
505	";\n"
506	"BEGINCODE\n");
507	for (PMYEXPORT pExp = g_pExpHead; pExp; pExp = pExp->pNext)
508	{
509	if (!pExp->fNoName)
510	fprintf(pOutput,
511	"___LazyLoad___%s:\n"
512	/* "int3\n" */
513	"%%ifdef RT_ARCH_AMD64\n"
514	" lea rax, [g_sz%s wrt rip]\n"
515	" lea r10, [NAME(%s%s) wrt rip]\n"
516	" call LazyLoadResolver\n"
517	"%%elifdef RT_ARCH_X86\n"
518	" push g_sz%s\n"
519	" push NAME(%s%s)\n"
520	" call LazyLoadResolver\n"
521	" add esp, 8h\n"
522	"%%else\n"
523	" %%error \"Unsupported architecture\"\n"
524	"%%endif\n"
525	,
526	pExp->pszExportedNm,
527	pExp->pszExportedNm,
528	!pExp->fData ? "g_pfn" : "g_LazyPtr_", pExp->pszExportedNm,
529	pExp->pszExportedNm,
530	!pExp->fData ? "g_pfn" : "g_LazyPtr_", pExp->pszExportedNm);
531	else
532	fprintf(pOutput,
533	"___LazyLoad___%s:\n"
534	/* "int3\n" */
535	"%%ifdef RT_ARCH_AMD64\n"
536	" mov eax, %u\n"
537	" lea r10, [NAME(%s%s) wrt rip]\n"
538	" call LazyLoadResolver\n"
539	"%%elifdef RT_ARCH_X86\n"
540	" push %u\n"
541	" push NAME(%s%s)\n"
542	" call LazyLoadResolver\n"
543	" add esp, 8h\n"
544	"%%else\n"
545	" %%error \"Unsupported architecture\"\n"
546	"%%endif\n"
547	,
548	pExp->pszExportedNm,
549	pExp->uOrdinal,
550	!pExp->fData ? "g_pfn" : "g_LazyPtr_", pExp->pszExportedNm,
551	pExp->uOrdinal,
552	!pExp->fData ? "g_pfn" : "g_LazyPtr_", pExp->pszExportedNm);
553	if (pExp->fData)
554	fprintf(pOutput, " jmp NAME(LazyGetPtr_%s)\n", pExp->szName);
555	else if (!pExp->pszUnstdcallName)
556	fprintf(pOutput, " jmp NAME(%s)\n", pExp->szName);
557	else
558	fprintf(pOutput,
559	"%%ifdef RT_ARCH_X86\n"
560	" jmp %s\n"
561	"%%else\n"
562	" jmp NAME(%s)\n"
563	"%%endif\n"
564	,
565	pExp->szName, pExp->pszUnstdcallName);
566	fprintf(pOutput, "\n");
567	}
568	fprintf(pOutput,
569	"\n"
570	"\n"
571	"\n");
572
573	/*
574	* The code that does the loading and resolving.
575	*/
576	fprintf(pOutput,
577	";\n"
578	"; The module handle.\n"
579	";\n"
580	"BEGINDATA\n"
581	"g_hMod RTCCPTR_DEF 0\n"
582	"\n"
583	"\n"
584	"\n");
585
586	/*
587	* How we load the module needs to be selectable later on.
588	*
589	* The LazyLoading routine returns the module handle in RCX/ECX, caller
590	* saved all necessary registers.
591	*/
592	if (!g_fSystemLibrary)
593	fprintf(pOutput,
594	";\n"
595	";SUPR3DECL(int) SUPR3HardenedLdrLoadAppPriv(const char *pszFilename, PRTLDRMOD phLdrMod,\n"
596	"; uint32_t fFlags, PRTERRINFO pErrInfo);\n"
597	";\n"
598	"EXTERN_IMP2 SUPR3HardenedLdrLoadAppPriv\n"
599	"%%ifdef IN_RT_R3\n"
600	"extern NAME(RTAssertMsg2Weak)\n"
601	"%%else\n"
602	"EXTERN_IMP2 RTAssertMsg2Weak\n"
603	"%%endif\n"
604	"BEGINCODE\n"
605	"\n"
606	"LazyLoading:\n"
607	" mov xCX, [g_hMod xWrtRIP]\n"
608	" or xCX, xCX\n"
609	" jnz .return\n"
610	"\n"
611	"%%ifdef ASM_CALL64_GCC\n"
612	" xor rcx, rcx ; pErrInfo\n"
613	" xor rdx, rdx ; fFlags (local load)\n"
614	" lea rsi, [g_hMod wrt rip] ; phLdrMod\n"
615	" lea rdi, [g_szLibrary wrt rip] ; pszFilename\n"
616	" sub rsp, 08h\n"
617	" call IMP2(SUPR3HardenedLdrLoadAppPriv)\n"
618	" add rsp, 08h\n"
619	"\n"
620	"%%elifdef ASM_CALL64_MSC\n"
621	" xor r9, r9 ; pErrInfo\n"
622	" xor r8, r8 ; fFlags (local load)\n"
623	" lea rdx, [g_hMod wrt rip] ; phLdrMod\n"
624	" lea rcx, [g_szLibrary wrt rip] ; pszFilename\n"
625	" sub rsp, 28h\n"
626	" call IMP2(SUPR3HardenedLdrLoadAppPriv)\n"
627	" add rsp, 28h\n"
628	"\n"
629	"%%elifdef RT_ARCH_X86\n"
630	" sub xSP, 0ch\n"
631	" push 0 ; pErrInfo\n"
632	" push 0 ; fFlags (local load)\n"
633	" push g_hMod ; phLdrMod\n"
634	" push g_szLibrary ; pszFilename\n"
635	" call IMP2(SUPR3HardenedLdrLoadAppPriv)\n"
636	" add esp, 1ch\n"
637	"%%else\n"
638	" %%error \"Unsupported architecture\"\n"
639	"%%endif\n");
640	else
641	fprintf(pOutput,
642	";\n"
643	"; RTDECL(int) RTLdrLoadSystem(const char *pszFilename, bool fNoUnload, PRTLDRMOD phLdrMod);\n"
644	";\n"
645	"%%ifdef IN_RT_R3\n"
646	"extern NAME(RTLdrLoadSystem)\n"
647	"extern NAME(RTAssertMsg2Weak)\n"
648	"%%else\n"
649	"EXTERN_IMP2 RTLdrLoadSystem\n"
650	"EXTERN_IMP2 RTAssertMsg2Weak\n"
651	"%%endif\n"
652	"BEGINCODE\n"
653	"\n"
654	"LazyLoading:\n"
655	" mov xCX, [g_hMod xWrtRIP]\n"
656	" or xCX, xCX\n"
657	" jnz .return\n"
658	"\n"
659	"%%ifdef ASM_CALL64_GCC\n"
660	" lea rdx, [g_hMod wrt rip] ; phLdrMod\n"
661	" mov esi, 1 ; fNoUnload=true\n"
662	" lea rdi, [g_szLibrary wrt rip] ; pszFilename\n"
663	" sub rsp, 08h\n"
664	" %%ifdef IN_RT_R3\n"
665	" call NAME(RTLdrLoadSystem)\n"
666	" %%else\n"
667	" call IMP2(RTLdrLoadSystem)\n"
668	" %%endif\n"
669	" add rsp, 08h\n"
670	"\n"
671	"%%elifdef ASM_CALL64_MSC\n"
672	" lea r8, [g_hMod wrt rip] ; phLdrMod\n"
673	" mov edx, 1 ; fNoUnload=true\n"
674	" lea rcx, [g_szLibrary wrt rip] ; pszFilename\n"
675	" sub rsp, 28h\n"
676	" %%ifdef IN_RT_R3\n"
677	" call NAME(RTLdrLoadSystem)\n"
678	" %%else\n"
679	" call IMP2(RTLdrLoadSystem)\n"
680	" %%endif\n"
681	" add rsp, 28h\n"
682	"\n"
683	"%%elifdef RT_ARCH_X86\n"
684	" push g_hMod ; phLdrMod\n"
685	" push 1 ; fNoUnload=true\n"
686	" push g_szLibrary ; pszFilename\n"
687	" %%ifdef IN_RT_R3\n"
688	" call NAME(RTLdrLoadSystem)\n"
689	" %%else\n"
690	" call IMP2(RTLdrLoadSystem)\n"
691	" %%endif\n"
692	" add esp, 0ch\n"
693	"%%else\n"
694	" %%error \"Unsupported architecture\"\n"
695	"%%endif\n");
696	fprintf(pOutput,
697	" or eax, eax\n"
698	" jnz .badload\n"
699	" mov xCX, [g_hMod xWrtRIP]\n"
700	".return:\n"
701	" ret\n"
702	"\n"
703	".badload:\n"
704	"%%ifdef ASM_CALL64_GCC\n"
705	" mov edx, eax\n"
706	" lea rsi, [g_szLibrary wrt rip]\n"
707	" lea rdi, [g_szFailLoadFmt wrt rip]\n"
708	" sub rsp, 08h\n"
709	"%%elifdef ASM_CALL64_MSC\n"
710	" mov r8d, eax\n"
711	" lea rdx, [g_szLibrary wrt rip]\n"
712	" lea rcx, [g_szFailLoadFmt wrt rip]\n"
713	" sub rsp, 28h\n"
714	"%%elifdef RT_ARCH_X86\n"
715	" push eax\n"
716	" push g_szLibrary\n"
717	" push g_szFailLoadFmt\n"
718	"%%endif\n"
719	"%%ifdef IN_RT_R3\n"
720	" call NAME(RTAssertMsg2Weak)\n"
721	"%%else\n"
722	" call IMP2(RTAssertMsg2Weak)\n"
723	"%%endif\n"
724	".badloadloop:\n"
725	" int3\n"
726	" jmp .badloadloop\n"
727	"LazyLoading_End:\n"
728	"\n"
729	"\n");
730
731
732	fprintf(pOutput,
733	";\n"
734	";RTDECL(int) RTLdrGetSymbol(RTLDRMOD hLdrMod, const char pszSymbol, void *ppvValue);\n"
735	";\n"
736	"%%ifdef IN_RT_R3\n"
737	"extern NAME(RTLdrGetSymbol)\n"
738	"%%else\n"
739	"EXTERN_IMP2 RTLdrGetSymbol\n"
740	"%%endif\n"
741	"BEGINCODE\n"
742	"LazyLoadResolver:\n"
743	"%%ifdef RT_ARCH_AMD64\n"
744	" push rbp\n"
745	" mov rbp, rsp\n"
746	" push r15\n"
747	" push r14\n"
748	" mov r15, rax ; name\n"
749	" mov r14, r10 ; ppfn\n"
750	" push r9\n"
751	" push r8\n"
752	" push rcx\n"
753	" push rdx\n"
754	" push r12\n"
755	" %%ifdef ASM_CALL64_GCC\n"
756	" push rsi\n"
757	" push rdi\n"
758	" mov r12, rsp\n"
759	" %%else\n"
760	" mov r12, rsp\n"
761	" sub rsp, 20h\n"
762	" %%endif\n"
763	" and rsp, 0fffffff0h ; Try make sure the stack is aligned\n"
764	"\n"
765	" call LazyLoading ; returns handle in rcx\n"
766	" %%ifdef ASM_CALL64_GCC\n"
767	" mov rdi, rcx ; hLdrMod\n"
768	" mov rsi, r15 ; pszSymbol\n"
769	" mov rdx, r14 ; ppvValue\n"
770	" %%else\n"
771	" mov rdx, r15 ; pszSymbol\n"
772	" mov r8, r14 ; ppvValue\n"
773	" %%endif\n"
774	" %%ifdef IN_RT_R3\n"
775	" call NAME(RTLdrGetSymbol)\n"
776	" %%else\n"
777	" call IMP2(RTLdrGetSymbol)\n"
778	" %%endif\n"
779	" or eax, eax\n"
780	" jnz .badsym\n"
781	"\n"
782	" mov rsp, r12\n"
783	" %%ifdef ASM_CALL64_GCC\n"
784	" pop rdi\n"
785	" pop rsi\n"
786	" %%endif\n"
787	" pop r12\n"
788	" pop rdx\n"
789	" pop rcx\n"
790	" pop r8\n"
791	" pop r9\n"
792	" pop r14\n"
793	" pop r15\n"
794	" leave\n"
795	"\n"
796	"%%elifdef RT_ARCH_X86\n"
797	" push ebp\n"
798	" mov ebp, esp\n"
799	" push eax\n"
800	" push ecx\n"
801	" push edx\n"
802	" and esp, 0fffffff0h\n"
803	"\n"
804	".loaded:\n"
805	" call LazyLoading ; returns handle in ecx\n"
806	" push dword [ebp + 8] ; value addr\n"
807	" push dword [ebp + 12] ; symbol name\n"
808	" push ecx\n"
809	" %%ifdef IN_RT_R3\n"
810	" call NAME(RTLdrGetSymbol)\n"
811	" %%else\n"
812	" call IMP2(RTLdrGetSymbol)\n"
813	" %%endif\n"
814	" or eax, eax\n"
815	" jnz .badsym\n"
816	" lea esp, [ebp - 0ch]\n"
817	" pop edx\n"
818	" pop ecx\n"
819	" pop eax\n"
820	" leave\n"
821	"%%else\n"
822	" %%error \"Unsupported architecture\"\n"
823	"%%endif\n"
824	" ret\n"
825	"\n"
826	".badsym:\n"
827	"%%ifdef ASM_CALL64_GCC\n"
828	" mov ecx, eax\n"
829	" lea rdx, [g_szLibrary wrt rip]\n"
830	" mov rsi, r15\n"
831	" lea rdi, [g_szFailResolveFmt wrt rip]\n"
832	" sub rsp, 08h\n"
833	"%%elifdef ASM_CALL64_MSC\n"
834	" mov r9d, eax\n"
835	" mov r8, r15\n"
836	" lea rdx, [g_szLibrary wrt rip]\n"
837	" lea rcx, [g_szFailResolveFmt wrt rip]\n"
838	" sub rsp, 28h\n"
839	"%%elifdef RT_ARCH_X86\n"
840	" push eax\n"
841	" push dword [ebp + 12]\n"
842	" push g_szLibrary\n"
843	" push g_szFailResolveFmt\n"
844	"%%endif\n"
845	"%%ifdef IN_RT_R3\n"
846	" call NAME(RTAssertMsg2Weak)\n"
847	"%%else\n"
848	" call IMP2(RTAssertMsg2Weak)\n"
849	"%%endif\n"
850	".badsymloop:\n"
851	" int3\n"
852	" jmp .badsymloop\n"
853	"\n"
854	"LazyLoadResolver_End:\n"
855	"\n"
856	"\n"
857	);
858
859
860
861	/*
862	* C callable method for explicitly loading the library and optionally
863	* resolving all the imports.
864	*/
865	if (g_fWithExplictLoadFunction)
866	{
867	int cchLibBaseName = (int)(strchr(g_pszLibrary, '.') ? strchr(g_pszLibrary, '.') - g_pszLibrary : strlen(g_pszLibrary));
868	fprintf(pOutput,
869	";;\n"
870	"; ExplicitlyLoad%.*s(bool fResolveAllImports, pErrInfo);\n"
871	";\n"
872	"%%ifdef IN_RT_R3\n"
873	"extern NAME(RTErrInfoSet)\n"
874	"%%else\n"
875	"EXTERN_IMP2 RTErrInfoSet\n"
876	"%%endif\n"
877	"BEGINCODE\n"
878	"BEGINPROC ExplicitlyLoad%.*s\n"
879	" push xBP\n"
880	" mov xBP, xSP\n"
881	" push xBX\n"
882	"%%ifdef ASM_CALL64_GCC\n"
883	" %%define pszCurStr r14\n"
884	" push r14\n"
885	"%%else\n"
886	" %%define pszCurStr xDI\n"
887	" push xDI\n"
888	"%%endif\n"
889	" sub xSP, 40h\n"
890	"\n"
891	" ;\n"
892	" ; Save parameters on stack (64-bit only).\n"
893	" ;\n"
894	"%%ifdef ASM_CALL64_GCC\n"
895	" mov [xBP - xCB * 3], rdi ; fResolveAllImports\n"
896	" mov [xBP - xCB * 4], rsi ; pErrInfo\n"
897	"%%elifdef ASM_CALL64_MSC\n"
898	" mov [xBP - xCB * 3], rcx ; fResolveAllImports\n"
899	" mov [xBP - xCB * 4], rdx ; pErrInfo\n"
900	"%%endif\n"
901	"\n"
902	" ;\n"
903	" ; Is the module already loaded?\n"
904	" ;\n"
905	" cmp RTCCPTR_PRE [g_hMod xWrtRIP], 0\n"
906	" jnz .loaded\n"
907	"\n"
908	" ;\n"
909	" ; Load the module.\n"
910	" ;\n"
911	,
912	cchLibBaseName, g_pszLibrary,
913	cchLibBaseName, g_pszLibrary);
914	if (!g_fSystemLibrary)
915	fprintf(pOutput,
916	"%%ifdef ASM_CALL64_GCC\n"
917	" mov rcx, [xBP - xCB * 4] ; pErrInfo\n"
918	" xor rdx, rdx ; fFlags (local load)\n"
919	" lea rsi, [g_hMod wrt rip] ; phLdrMod\n"
920	" lea rdi, [g_szLibrary wrt rip] ; pszFilename\n"
921	" call IMP2(SUPR3HardenedLdrLoadAppPriv)\n"
922	"\n"
923	"%%elifdef ASM_CALL64_MSC\n"
924	" mov r9, [xBP - xCB * 4] ; pErrInfo\n"
925	" xor r8, r8 ; fFlags (local load)\n"
926	" lea rdx, [g_hMod wrt rip] ; phLdrMod\n"
927	" lea rcx, [g_szLibrary wrt rip] ; pszFilename\n"
928	" call IMP2(SUPR3HardenedLdrLoadAppPriv)\n"
929	"\n"
930	"%%elifdef RT_ARCH_X86\n"
931	" sub xSP, 0ch\n"
932	" push dword [xBP + 12] ; pErrInfo\n"
933	" push 0 ; fFlags (local load)\n"
934	" push g_hMod ; phLdrMod\n"
935	" push g_szLibrary ; pszFilename\n"
936	" call IMP2(SUPR3HardenedLdrLoadAppPriv)\n"
937	" add esp, 1ch\n"
938	"%%else\n"
939	" %%error \"Unsupported architecture\"\n"
940	"%%endif\n");
941	else
942	fprintf(pOutput,
943	"%%ifdef ASM_CALL64_GCC\n"
944	" lea rdx, [g_hMod wrt rip] ; phLdrMod\n"
945	" mov esi, 1 ; fNoUnload=true\n"
946	" lea rdi, [g_szLibrary wrt rip] ; pszFilename\n"
947	" %%ifdef IN_RT_R3\n"
948	" call NAME(RTLdrLoadSystem)\n"
949	" %%else\n"
950	" call IMP2(RTLdrLoadSystem)\n"
951	" %%endif\n"
952	"\n"
953	"%%elifdef ASM_CALL64_MSC\n"
954	" lea r8, [g_hMod wrt rip] ; phLdrMod\n"
955	" mov edx, 1 ; fNoUnload=true\n"
956	" lea rcx, [g_szLibrary wrt rip] ; pszFilename\n"
957	" %%ifdef IN_RT_R3\n"
958	" call NAME(RTLdrLoadSystem)\n"
959	" %%else\n"
960	" call IMP2(RTLdrLoadSystem)\n"
961	" %%endif\n"
962	"\n"
963	"%%elifdef RT_ARCH_X86\n"
964	" push g_hMod ; phLdrMod\n"
965	" push 1 ; fNoUnload=true\n"
966	" push g_szLibrary ; pszFilename\n"
967	" %%ifdef IN_RT_R3\n"
968	" call NAME(RTLdrLoadSystem)\n"
969	" %%else\n"
970	" call IMP2(RTLdrLoadSystem)\n"
971	" %%endif\n"
972	" add esp, 0ch\n"
973	"%%else\n"
974	" %%error \"Unsupported architecture\"\n"
975	"%%endif\n");
976	fprintf(pOutput,
977	" or eax, eax\n"
978	" jnz .return\n"
979	"\n"
980	" ;\n"
981	" ; Resolve the imports too if requested to do so.\n"
982	" ;\n"
983	".loaded:\n"
984	"%%ifdef ASM_ARCH_X86\n"
985	" cmp byte [xBP + 8], 0\n"
986	"%%else\n"
987	" cmp byte [xBP - xCB * 3], 0\n"
988	"%%endif\n"
989	" je .return\n"
990	"\n"
991	" lea pszCurStr, [g_szzNames xWrtRIP]\n"
992	" lea xBX, [g_apfnImports xWrtRIP]\n"
993	".next_import:\n"
994	" cmp RTCCPTR_PRE [xBX], 0\n"
995	" je .return\n"
996	"%%ifdef ASM_CALL64_GCC\n"
997	" mov rdx, xBX ; ppvValue\n"
998	" mov rsi, pszCurStr ; pszSymbol\n"
999	" mov rdi, [g_hMod wrt rip] ; hLdrMod\n"
1000	" %%ifdef IN_RT_R3\n"
1001	" call NAME(RTLdrGetSymbol)\n"
1002	" %%else\n"
1003	" call IMP2(RTLdrGetSymbol)\n"
1004	" %%endif\n"
1005	"%%elifdef ASM_CALL64_MSC\n"
1006	" mov r8, xBX ; ppvValue\n"
1007	" mov rdx, pszCurStr ; pszSymbol\n"
1008	" mov rcx, [g_hMod wrt rip] ; pszSymbol\n"
1009	" %%ifdef IN_RT_R3\n"
1010	" call NAME(RTLdrGetSymbol)\n"
1011	" %%else\n"
1012	" call IMP2(RTLdrGetSymbol)\n"
1013	" %%endif\n"
1014	"%%else\n"
1015	" push xBX ; ppvValue\n"
1016	" push pszCurStr ; pszSymbol\n"
1017	" push RTCCPTR_PRE [g_hMod] ; hLdrMod\n"
1018	" %%ifdef IN_RT_R3\n"
1019	" call NAME(RTLdrGetSymbol)\n"
1020	" %%else\n"
1021	" call IMP2(RTLdrGetSymbol)\n"
1022	" %%endif\n"
1023	" add xSP, 0ch\n"
1024	"%%endif\n"
1025	" or eax, eax\n"
1026	" jnz .symbol_error\n"
1027	"\n"
1028	" ; Advance.\n"
1029	" add xBX, RTCCPTR_CB\n"
1030	" xor eax, eax\n"
1031	" mov xCX, 0ffffffffh\n"
1032	"%%ifdef ASM_CALL64_GCC\n"
1033	" mov xDI, pszCurStr\n"
1034	" repne scasb\n"
1035	" mov pszCurStr, xDI\n"
1036	"%%else\n"
1037	" repne scasb\n"
1038	"%%endif\n"
1039	" jmp .next_import\n"
1040	"\n"
1041	" ;\n"
1042	" ; Error loading a symbol. Call RTErrInfoSet on pErrInfo (preserves eax).\n"
1043	" ;\n"
1044	".symbol_error:\n"
1045	"%%ifdef ASM_CALL64_GCC\n"
1046	" mov rdx, pszCurStr ; pszMsg\n"
1047	" mov esi, eax ; rc\n"
1048	" mov rdi, [xBP - xCB * 4] ; pErrInfo\n"
1049	" %%ifdef IN_RT_R3\n"
1050	" call NAME(RTErrInfoSet)\n"
1051	" %%else\n"
1052	" call IMP2(RTErrInfoSet)\n"
1053	" %%endif\n"
1054	"%%elifdef ASM_CALL64_MSC\n"
1055	" mov r8, pszCurStr ; pszMsg\n"
1056	" mov edx, eax ; rc\n"
1057	" mov rcx, [xBP - xCB * 4] ; pErrInfo\n"
1058	" %%ifdef IN_RT_R3\n"
1059	" call NAME(RTErrInfoSet)\n"
1060	" %%else\n"
1061	" call IMP2(RTErrInfoSet)\n"
1062	" %%endif\n"
1063	"%%else\n"
1064	" push pszCurStr ; pszMsg\n"
1065	" push eax ; pszSymbol\n"
1066	" push dword [xBP + 0ch] ; pErrInfo\n"
1067	" %%ifdef IN_RT_R3\n"
1068	" call NAME(RTErrInfoSet)\n"
1069	" %%else\n"
1070	" call IMP2(RTErrInfoSet)\n"
1071	" %%endif\n"
1072	" add xSP, 0ch\n"
1073	"%%endif\n"
1074	" "
1075	"\n"
1076	".return:\n"
1077	" mov pszCurStr, [xBP - xCB * 2]\n"
1078	" mov xBX, [xBP - xCB * 1]\n"
1079	" leave\n"
1080	" ret\n"
1081	"ENDPROC ExplicitlyLoad%.*s\n"
1082	"\n"
1083	"\n"
1084	,
1085	cchLibBaseName, g_pszLibrary);
1086	}
1087
1088
1089	return RTEXITCODE_SUCCESS;
1090	}
1091
1092
1093	/**
1094	* Generates the assembly source code for ARM64, writing it
1095	* to @a pOutput.
1096	*
1097	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE, in the latter case full
1098	* details has been displayed.
1099	* @param pOutput The output stream (caller checks it for errors
1100	* when closing).
1101	*/
1102	static RTEXITCODE generateOutputInnerArm64(FILE *pOutput)
1103	{
1104	// bool fMachO = true;
1105	// bool fDarwin = true;
1106	const char *pszNmPfx = "_";
1107
1108	fprintf(pOutput, ";;\n");
1109	for (unsigned i = 0; i < g_cInputs; i++)
1110	fprintf(pOutput, ";; Autogenerated from '%s'.\n", g_apszInputs[i]);
1111
1112	fprintf(pOutput,
1113	";; DO NOT EDIT!\n"
1114	";;\n"
1115	"\n"
1116	"\n"
1117	/"%%include \"iprt/asmdefs.mac\"\n"/
1118	"\n"
1119	"\n");
1120
1121	/*
1122	* Put the thunks first for alignment and other reasons. It's the hot part of the code.
1123	*/
1124	fprintf(pOutput,
1125	";\n"
1126	"; Thunks.\n"
1127	";\n"
1128	".section __TEXT,__text,regular,pure_instructions\n");
1129	for (PMYEXPORT pExp = g_pExpHead; pExp; pExp = pExp->pNext)
1130	if (!pExp->fData)
1131	fprintf(pOutput,
1132	".p2align 3\n"
1133	".globl %s%s\n"
1134	"%s%s:\n"
1135	" adrp x9, %sg_pfn%s@PAGE\n"
1136	" ldr x9, [x9, %sg_pfn%s@PAGEOFF]\n"
1137	" br x9\n",
1138	pszNmPfx, pExp->szName, pszNmPfx, pExp->szName, pszNmPfx, pExp->szName, pszNmPfx, pExp->szName);
1139	else
1140	fprintf(pOutput,
1141	".p2align 3\n"
1142	".globl %sLazyGetPtr_%s\n"
1143	"%sLazyGetPtr_%s:\n"
1144	" adrp x9, %sg_LazyPtr_%s@PAGE\n"
1145	" ldr x9, [x9, %sg_LazyPtr_%s@PAGEOFF]\n"
1146	" cmp x9, #0\n"
1147	" b.ne ___LazyLoad___%s\n"
1148	" mov x0, x9\n"
1149	" ret\n",
1150	pszNmPfx, pExp->szName, pszNmPfx, pExp->szName, pszNmPfx, pExp->szName, pszNmPfx, pExp->szName, pExp->pszExportedNm);
1151	fprintf(pOutput,
1152	"\n"
1153	"\n");
1154
1155	/*
1156	* Import pointers
1157	*/
1158	fprintf(pOutput,
1159	";\n"
1160	"; Import pointers. Initialized to point to lazy loading stubs.\n"
1161	";\n"
1162	".section __DATA,__data\n"
1163	".p2align 3\n"
1164	"g_apfnImports:\n");
1165	for (PMYEXPORT pExp = g_pExpHead; pExp; pExp = pExp->pNext)
1166	if (!pExp->fData)
1167	fprintf(pOutput,
1168	".globl __imp_%s\n"
1169	"__imp_%s:\n"
1170	".globl %sg_pfn%s\n"
1171	"%sg_pfn%s:\n"
1172	" .quad ___LazyLoad___%s\n"
1173	"\n",
1174	pExp->szName, pExp->szName,
1175	pszNmPfx, pExp->szName, pszNmPfx, pExp->szName,
1176	pExp->pszExportedNm);
1177	else
1178	fprintf(pOutput,
1179	".globl %sg_LazyPtr_%s\n"
1180	"%sg_LazyPtr_%s:\n"
1181	" .quad 0\n"
1182	"\n",
1183	pszNmPfx, pExp->szName, pszNmPfx, pExp->szName);
1184	fprintf(pOutput,
1185	" .quad 0 ; Terminator entry for traversal.\n"
1186	"\n"
1187	"\n");
1188
1189	/*
1190	* Now for the less important stuff, starting with the names.
1191	*
1192	* We keep the names separate so we can traverse them in parallel to
1193	* g_apfnImports in the load-everything routine further down.
1194	*/
1195	fprintf(pOutput,
1196	";\n"
1197	"; Imported names.\n"
1198	";\n"
1199	".section __TEXT,__cstring,cstring_literals\n"
1200	"g_szLibrary:\n"
1201	" .asciz \"%s\"\n"
1202	"\n"
1203	"g_szzNames:\n",
1204	g_pszLibrary);
1205	for (PMYEXPORT pExp = g_pExpHead; pExp; pExp = pExp->pNext)
1206	if (!pExp->fNoName)
1207	fprintf(pOutput, " g_sz%s:\n .asciz \"%s\"\n", pExp->pszExportedNm, pExp->pszExportedNm);
1208	else
1209	fprintf(pOutput, " g_sz%s:\n .asciz \"#%u\"\n", pExp->pszExportedNm, pExp->uOrdinal);
1210	fprintf(pOutput,
1211	"g_EndOfNames: .byte 0\n"
1212	"\n"
1213	"g_szFailLoadFmt: .asciz \"Lazy loader failed to load \\\"%%s\\\": %%Rrc\\n\"\n"
1214	"g_szFailResolveFmt: .asciz \"Lazy loader failed to resolve symbol \\\"%%s\\\" in \\\"%%s\\\": %%Rrc\\n\"\n"
1215	"\n"
1216	"\n");
1217
1218	/*
1219	* The per import lazy load code.
1220	*/
1221	fprintf(pOutput,
1222	";\n"
1223	"; Lazy load+resolve stubs.\n"
1224	";\n"
1225	".section __TEXT,__text,regular,pure_instructions\n"
1226	".p2align 3\n");
1227	for (PMYEXPORT pExp = g_pExpHead; pExp; pExp = pExp->pNext)
1228	{
1229	if (!pExp->fNoName)
1230	fprintf(pOutput,
1231	"___LazyLoad___%s:\n"
1232	" adrp x9, g_sz%s@PAGE\n"
1233	" add x9, x9, g_sz%s@PAGEOFF\n"
1234	" adrp x10, %s%s%s@PAGE\n"
1235	" add x10, x10, %s%s%s@PAGEOFF\n"
1236	" bl LazyLoadResolver\n"
1237	, pExp->pszExportedNm,
1238	pExp->pszExportedNm, pExp->pszExportedNm,
1239	pszNmPfx, !pExp->fData ? "g_pfn" : "g_LazyPtr_", pExp->pszExportedNm,
1240	pszNmPfx, !pExp->fData ? "g_pfn" : "g_LazyPtr_", pExp->pszExportedNm);
1241	else
1242	fprintf(pOutput,
1243	"___LazyLoad___%s:\n"
1244	" movk w9, #%u\n"
1245	" adrp x10, %s%s%s@PAGE\n"
1246	" add x10, x10, %s%s%s@PAGEOFF\n"
1247	, pExp->pszExportedNm,
1248	pExp->uOrdinal,
1249	pszNmPfx, !pExp->fData ? "g_pfn" : "g_LazyPtr_", pExp->pszExportedNm,
1250	pszNmPfx, !pExp->fData ? "g_pfn" : "g_LazyPtr_", pExp->pszExportedNm);
1251	if (!pExp->fData)
1252	fprintf(pOutput, " b %s%s\n", pszNmPfx, pExp->szName);
1253	else
1254	fprintf(pOutput, " b %sLazyGetPtr_%s\n", pszNmPfx, pExp->szName);
1255	fprintf(pOutput, "\n");
1256	}
1257	fprintf(pOutput,
1258	"\n"
1259	"\n"
1260	"\n");
1261
1262	/*
1263	* The code that does the loading and resolving.
1264	*/
1265	fprintf(pOutput,
1266	";\n"
1267	"; The module handle.\n"
1268	";\n"
1269	".section __DATA,__data\n"
1270	"g_hMod:\n"
1271	" .quad 0\n"
1272	"\n"
1273	"\n"
1274	"\n");
1275
1276	/*
1277	* Common lazy loader and resolved.
1278	*/
1279	fprintf(pOutput,
1280	";\n"
1281	"; The resolver code.\n"
1282	";\n"
1283	".section __TEXT,__text,regular,pure_instructions\n"
1284	".p2align 3\n"
1285	"LazyLoadResolver:\n"
1286	" .cfi_startproc\n"
1287	" ; Create frame.\n"
1288	" sub sp, sp, #(16 + 192)\n"
1289	" stp x29, x30, [sp, #192]\n"
1290	" add x29, sp, #192\n"
1291	" .cfi_def_cfa x29, 16\n"
1292	" .cfi_offset x30, -8\n"
1293	" .cfi_offset x29, -16\n"
1294	" ; Save all argument registers and a handful of preserved ones.\n"
1295	" stp x0, x1, [sp, #(192 - 16)]\n"
1296	" .cfi_offset x0, -32\n"
1297	" .cfi_offset x1, -24\n"
1298	" stp x2, x3, [sp, #(192 - 32)]\n"
1299	" .cfi_offset x3, -40\n"
1300	" .cfi_offset x2, -48\n"
1301	" stp x4, x5, [sp, #(192 - 48)]\n"
1302	" .cfi_offset x6, -56\n"
1303	" .cfi_offset x5, -64\n"
1304	" stp x6, x7, [sp, #(192 - 64)]\n"
1305	" .cfi_offset x7, -72\n"
1306	" .cfi_offset x6, -80\n"
1307	" stp x16, x17, [sp, #(192 - 80)]\n"
1308	" .cfi_offset x17, -88\n"
1309	" .cfi_offset x16, -96\n"
1310	" stp x18, x19, [sp, #(192 - 96)]\n"
1311	" .cfi_offset x19, -104\n"
1312	" .cfi_offset x18, -112\n"
1313	" stp x20, x21, [sp, #(192 - 112)]\n"
1314	" .cfi_offset x21, -120\n"
1315	" .cfi_offset x20, -128\n"
1316	" stp x22, x23, [sp, #(192 - 128)]\n"
1317	" .cfi_offset x23, -136\n"
1318	" .cfi_offset x22, -144\n"
1319	" str x8, [sp, #(192 - 144)]\n"
1320	"\n"
1321	" ; Shift the symbol name to x19 and g_pfnXXXX pointer to x20 as these are preserved registers\n"
1322	" ; (in case we need to call LazyLoadModule/RTLdrLoad)\n"
1323	" mov x19, x9\n"
1324	" mov x20, x10\n"
1325	"\n"
1326	" ; Get the module handle and call RTLdrGetSymbol(RTLDRMOD hLdrMod, const char pszSymbol, void *ppvValue)\n"
1327	" adrp x0, g_hMod@PAGE\n"
1328	" ldr x0, [x0, g_hMod@PAGEOFF]\n"
1329	" cmp x0, #0\n"
1330	" b.eq LazyLoading\n"
1331	" mov x1, x19\n"
1332	" mov x2, x20\n"
1333	" bl %sRTLdrGetSymbol\n"
1334	"\n"
1335	" cmp w0, #0\n"
1336	" b.eq Lreturn\n"
1337	"\n"
1338	"Lbadsym: ; Call sRTAssertMsg2Weak. Variadic (...) arguments are passed on the stack it seems.\n"
1339	" mov x3, x0\n"
1340	" adrp x2, g_szLibrary@PAGE\n"
1341	" add x2, x2, g_szLibrary@PAGEOFF\n"
1342	" mov x1, x19\n"
1343	" adrp x0, g_szFailLoadFmt@PAGE\n"
1344	" add x0, x0, g_szFailLoadFmt@PAGEOFF\n"
1345	" stp x1, x2, [sp]\n"
1346	" str x3, [sp, #16]\n"
1347	" bl %sRTAssertMsg2Weak\n"
1348	"Lbadsymloop:\n"
1349	" brk #0x1\n"
1350	" b Lbadsymloop\n"
1351
1352	"Lreturn:\n"
1353	" ; Restore saved register\n"
1354	" ldr x8, [sp, #(192 - 144)]\n"
1355	" .cfi_restore x8\n"
1356	" ldp x22, x23, [sp, #(192 - 128)]\n"
1357	" .cfi_restore x23\n"
1358	" .cfi_restore x22\n"
1359	" ldp x20, x21, [sp, #(192 - 112)]\n"
1360	" .cfi_restore x21\n"
1361	" .cfi_restore x20\n"
1362	" ldp x18, x19, [sp, #(192 - 96)]\n"
1363	" .cfi_restore x19\n"
1364	" .cfi_restore x18\n"
1365	" ldp x16, x17, [sp, #(192 - 80)]\n"
1366	" .cfi_restore x17\n"
1367	" .cfi_restore x18\n"
1368	" ldp x6, x7, [sp, #(192 - 64)]\n"
1369	" .cfi_restore x7\n"
1370	" .cfi_restore x6\n"
1371	" ldp x4, x5, [sp, #(192 - 48)]\n"
1372	" .cfi_restore x5\n"
1373	" .cfi_restore x4\n"
1374	" ldp x2, x3, [sp, #(192 - 32)]\n"
1375	" .cfi_restore x3\n"
1376	" .cfi_restore x2\n"
1377	" ldp x0, x1, [sp, #(192 - 16)]\n"
1378	" .cfi_restore x1\n"
1379	" .cfi_restore x0\n"
1380	"\n"
1381	" ldp x29, x30, [sp, #192]\n"
1382	" .cfi_restore x29\n"
1383	" .cfi_restore x30\n"
1384	" add sp, sp, #(16 + 192)\n"
1385	" ret\n"
1386	" .cfi_endproc\n"
1387	"\n"
1388	"\n"
1389	, pszNmPfx, pszNmPfx);
1390
1391	fprintf(pOutput,
1392	";\n"
1393	"; Loads the module.\n"
1394	"; ASSUMES called from LazyLoadResolver where all relevant registers are already saved.\n"
1395	";\n"
1396	"LazyLoading:\n"
1397	" .cfi_startproc\n"
1398	" ; Create frame.\n"
1399	" sub sp, sp, #(16 + 48)\n"
1400	" stp x29, x30, [sp, #48]\n"
1401	" add x29, sp, #48\n"
1402	" .cfi_def_cfa x29, 16\n"
1403	" .cfi_offset x30, -8\n"
1404	" .cfi_offset x29, -16\n"
1405	"\n");
1406
1407	if (!g_fSystemLibrary)
1408	fprintf(pOutput,
1409	" ; Call SUPR3HardenedLdrLoadAppPriv(const char *pszFilename, PRTLDRMOD phLdrMod, uint32_t fFlags, PRTERRINFO pErrInfo);\n"
1410	" mov x3, #0\n"
1411	" mov x2, #0\n"
1412	" adrp x1, g_hMod@PAGE\n"
1413	" add x1, x1, g_hMod@PAGEOFF\n"
1414	" adrp x0, g_szLibrary@PAGE\n"
1415	" add x0, x0, g_szLibrary@PAGEOFF\n"
1416	" bl %sSUPR3HardenedLdrLoadAppPriv\n"
1417	, pszNmPfx);
1418	else
1419	fprintf(pOutput,
1420	" ; Call RTLdrLoadSystem(const char *pszFilename, bool fNoUnload, PRTLDRMOD phLdrMod);\n"
1421	" adrp x2, g_hMod@PAGE\n"
1422	" add x2, x2, g_hMod@PAGEOFF\n"
1423	" mov x1, #1\n"
1424	" adrp x0, g_szLibrary@PAGE\n"
1425	" add x0, x0, g_szLibrary@PAGEOFF\n"
1426	" bl %sRTLdrLoadSystem\n"
1427	, pszNmPfx);
1428
1429	fprintf(pOutput,
1430	" cmp w0, #0\n"
1431	" b.eq Lload_return\n"
1432	"\n"
1433	"Lbadload: ; Call sRTAssertMsg2Weak. Variadic (...) arguments are passed on the stack it seems.\n"
1434	" mov x2, x0\n"
1435	" adrp x1, g_szLibrary@PAGE\n"
1436	" add x1, x1, g_szLibrary@PAGEOFF\n"
1437	" adrp x0, g_szFailResolveFmt@PAGE\n"
1438	" add x0, x0, g_szFailResolveFmt@PAGEOFF\n"
1439	" stp x1, x2, [sp]\n"
1440	" bl %sRTAssertMsg2Weak\n"
1441	"Lbadloadloop:\n"
1442	" brk #0x1\n"
1443	" b Lbadloadloop\n"
1444	"Lload_return:\n"
1445	" adrp x0, g_hMod@PAGE\n"
1446	" ldr x0, [x0, g_hMod@PAGEOFF]\n"
1447	" ldp x29, x30, [sp, #48]\n"
1448	" .cfi_restore x29\n"
1449	" .cfi_restore x30\n"
1450	" add sp, sp, #(16 + 48)\n"
1451	" ret\n"
1452	" .cfi_endproc\n"
1453	"\n"
1454	"\n"
1455	, pszNmPfx);
1456
1457	/*
1458	* C callable method for explicitly loading the library and optionally
1459	* resolving all the imports.
1460	*/
1461	if (g_fWithExplictLoadFunction)
1462	{
1463	int cchLibBaseName = (int)(strchr(g_pszLibrary, '.') ? strchr(g_pszLibrary, '.') - g_pszLibrary : strlen(g_pszLibrary));
1464	fprintf(pOutput,
1465	";;\n"
1466	"; ExplicitlyLoad%.*s(bool fResolveAllImports, pErrInfo);\n"
1467	";\n"
1468	".section __TEXT,__text,regular,pure_instructions\n"
1469	".p2align 3\n"
1470	".globl %sExplicitlyLoad%.*s\n"
1471	"%sExplicitlyLoad%.*s:\n"
1472	" .cfi_startproc\n"
1473	" ; Create frame.\n"
1474	" sub sp, sp, #(16 + 96)\n"
1475	" stp x29, x30, [sp, #96]\n"
1476	" add x29, sp, #96\n"
1477	" .cfi_def_cfa x29, 16\n"
1478	" .cfi_offset x30, -8\n"
1479	" .cfi_offset x29, -16\n"
1480	"\n"
1481	" stp x20, x21, [sp, #(96 - 16)]\n"
1482	" .cfi_offset x21, -24\n"
1483	" .cfi_offset x20, -32\n"
1484	" stp x22, x23, [sp, #(96 - 32)]\n"
1485	" .cfi_offset x23, -40\n"
1486	" .cfi_offset x22, -48\n"
1487
1488	" ; Save the input parameters.\n"
1489	" mov x20, x0\n"
1490	" mov x21, x1\n"
1491	"\n"
1492	" ;\n"
1493	" ; Is the module already loaded?\n"
1494	" ;\n"
1495	" adrp x0, g_hMod@PAGE\n"
1496	" ldr x0, [x0, g_hMod@PAGEOFF]\n"
1497	" cmp x0, #0\n"
1498	" b.ne Lexplicit_loaded_module\n"
1499	"\n"
1500	,
1501	cchLibBaseName, g_pszLibrary,
1502	pszNmPfx, cchLibBaseName, g_pszLibrary,
1503	pszNmPfx, cchLibBaseName, g_pszLibrary);
1504	fprintf(pOutput,
1505	"Lexplicit_load_module:\n");
1506	if (!g_fSystemLibrary)
1507	fprintf(pOutput,
1508	" ; Call SUPR3HardenedLdrLoadAppPriv(const char *pszFilename, PRTLDRMOD phLdrMod, uint32_t fFlags, PRTERRINFO pErrInfo);\n"
1509	" mov x3, x21\n"
1510	" mov x2, #0\n"
1511	" adrp x1, g_hMod@PAGE\n"
1512	" add x1, x1, g_hMod@PAGEOFF\n"
1513	" adrp x0, g_szLibrary@PAGE\n"
1514	" add x0, x0, g_szLibrary@PAGEOFF\n"
1515	" bl %sSUPR3HardenedLdrLoadAppPriv\n"
1516	, pszNmPfx);
1517	else
1518	fprintf(pOutput,
1519	" ; Call RTLdrLoadSystem(const char *pszFilename, bool fNoUnload, PRTLDRMOD phLdrMod);\n"
1520	" adrp x2, g_hMod@PAGE\n"
1521	" add x2, x2, g_hMod@PAGEOFF\n"
1522	" mov x1, #1\n"
1523	" adrp x0, g_szLibrary@PAGE\n"
1524	" add x0, x0, g_szLibrary@PAGEOFF\n"
1525	" bl %sRTLdrLoadSystem\n"
1526	, pszNmPfx);
1527	fprintf(pOutput,
1528	" cmp x0, #0\n"
1529	" b.ne Lexplicit_load_return\n"
1530	"\n");
1531
1532	fprintf(pOutput,
1533	" ;\n"
1534	" ; Resolve the imports too if requested to do so.\n"
1535	" ;\n"
1536	"Lexplicit_loaded_module:\n"
1537	" cmp w20, #0\n"
1538	" b.eq Lexplicit_load_return\n"
1539	"\n"
1540	" adrp x22, g_szzNames@PAGE\n"
1541	" add x22, x22, g_szzNames@PAGEOFF\n"
1542	" adrp x23, g_apfnImports@PAGE\n"
1543	" add x23, x23, g_apfnImports@PAGEOFF\n"
1544	"Lexplicit_load_next_import:\n"
1545	" ldr x0, [x23]\n"
1546	" cmp x0, #0\n"
1547	" b.eq Lexplicit_load_return\n"
1548	"\n"
1549	" ; Get the module handle and call RTLdrGetSymbol(RTLDRMOD hLdrMod, const char pszSymbol, void *ppvValue)\n"
1550	" adrp x0, g_hMod@PAGE\n"
1551	" ldr x0, [x0, g_hMod@PAGEOFF]\n"
1552	" mov x1, x22\n"
1553	" mov x2, x23\n"
1554	" bl %sRTLdrGetSymbol\n"
1555	" cmp x0, #0\n"
1556	" b.ne Lexplicit_load_symbol_error\n"
1557	"\n"
1558	" ; Advance.\n"
1559	" add x23, x23, #8\n"
1560	"Lexplict_load_advance_string:\n"
1561	" ldrb w0, [x22]\n"
1562	" add x22, x22, #1\n"
1563	" cmp w0, #0\n"
1564	" b.ne Lexplict_load_advance_string\n"
1565	" b Lexplicit_load_next_import\n"
1566	"\n"
1567	" ;\n"
1568	" ; Error loading a symbol. Call RTErrInfoSet(PRTERRINFO pErrInfo, int rc, const char *pszMsg) on pErrInfo (preserves x0).\n"
1569	" ;\n"
1570	"Lexplicit_load_symbol_error:\n"
1571	" mov x2, x22\n"
1572	" mov x1, x0\n"
1573	" mov x0, x21\n"
1574	" bl %sRTErrInfoSet\n"
1575	" b Lexplicit_load_return"
1576	" "
1577	"\n"
1578	"Lexplicit_load_return:\n"
1579	" ldp x22, x23, [sp, #(96 - 32)]\n"
1580	" .cfi_restore x23\n"
1581	" .cfi_restore x22\n"
1582	" ldp x20, x21, [sp, #(96 - 16)]\n"
1583	" .cfi_restore x21\n"
1584	" .cfi_restore x20\n"
1585	"\n"
1586	" ldp x29, x30, [sp, #96]\n"
1587	" .cfi_restore x29\n"
1588	" .cfi_restore x30\n"
1589	" add sp, sp, #(16 + 96)\n"
1590	" ret\n"
1591	" .cfi_endproc\n"
1592	"\n"
1593	"\n"
1594	, pszNmPfx, pszNmPfx);
1595	}
1596
1597	return RTEXITCODE_SUCCESS;
1598	}
1599
1600
1601	/**
1602	* Generates the assembly source code, writing it to g_pszOutput.
1603	*
1604	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE, in the latter case full
1605	* details has been displayed.
1606	*/
1607	static RTEXITCODE generateOutput(void)
1608	{
1609	RTEXITCODE rcExit = RTEXITCODE_FAILURE;
1610	FILE *pOutput = fopen(g_pszOutput, "w");
1611	if (pOutput)
1612	{
1613	switch (g_enmTarget)
1614	{
1615	case RTLDRARCH_AMD64:
1616	case RTLDRARCH_X86_32:
1617	rcExit = generateOutputInnerX86AndAMD64(pOutput);
1618	break;
1619	case RTLDRARCH_ARM64:
1620	rcExit = generateOutputInnerArm64(pOutput);
1621	break;
1622	default:
1623	rcExit = RTEXITCODE_FAILURE;
1624	break;
1625	}
1626	if (fclose(pOutput))
1627	{
1628	fprintf(stderr, "error: Error closing '%s'.\n", g_pszOutput);
1629	rcExit = RTEXITCODE_FAILURE;
1630	}
1631	}
1632	else
1633	fprintf(stderr, "error: Failed to open '%s' for writing.\n", g_pszOutput);
1634	return rcExit;
1635	}
1636
1637
1638	/**
1639	* Displays usage information.
1640	*
1641	* @returns RTEXITCODE_SUCCESS.
1642	* @param pszArgv0 The argv[0] string.
1643	*/
1644	static int usage(const char *pszArgv0)
1645	{
1646	const char *pszTmp = strrchr(pszArgv0, '/');
1647	if (pszTmp)
1648	pszArgv0 = pszTmp + 1;
1649	pszTmp = strrchr(pszArgv0, '\\');
1650	if (pszTmp)
1651	pszArgv0 = pszTmp + 1;
1652
1653	/* 0 1 2 3 4 5 6 7 8
1654	012345678901234567890123456789012345678901234567890123456789012345678901234567890 */
1655	printf("VBoxDef2LazyLoad - Lazy DLL/SO/DYLIB loader code generator.\n"
1656	"Copyright (C) 2013-2016 Oracle Corporation\n"
1657	"\n"
1658	"Description:\n"
1659	"------------\n"
1660	"\n"
1661	"Takes a Microsoft-style linker definition file for a library (DLL/SO/DYLIB) and\n"
1662	"generates assembly code which defines stub functions that lazily loads and\n"
1663	"resolves the real symbols before calling them. This is entirely transparent when\n"
1664	"used with functions.\n"
1665	"\n"
1666	"With data symbols it's more messy since the compiler will not invoke code when\n"
1667	"using them, but access them directly (ELF executables) or indirectly (ELF SOs,\n"
1668	"PE, ++). For data symbols use the DATA keyword after the symbol name in the\n"
1669	"def-file and modify the header definition from 'extern type symbol;' to:\n"
1670	"\n"
1671	" DECLASM(type *) LazyGetPtr_<symbol>(void);\n"
1672	" #define <symbol> (*LazyGetPtr_<symbol>())\n"
1673	"\n"
1674	"or, if using --explict-load-function this will work as well:\n"
1675	"\n"
1676	" extern type *g_LazyPtr_<symbol>;\n"
1677	" #define <symbol> (*g_LazyPtr_)\n"
1678	"\n"
1679	"Usage:\n"
1680	"------\n"
1681	"%s [options] --libary <loadname> --output <lazyload.asm> <input.def>\n"
1682	"\n"
1683	"Options:\n"
1684	"--------\n"
1685	" --library <loadname>, -l <loadname>\n"
1686	" The name of the library. This is what will be passed to RTLdrLoadSystem\n"
1687	" or SUPR3HardenedLdrLoadAppPriv.\n"
1688	" --output <filename>, -o <filename>\n"
1689	" The assembly output file.\n"
1690	" --explicit-load-function, --no-explicit-load-function\n"
1691	" Whether to include the explicit load function:\n"
1692	" DECLASM(int) ExplicitlyLoad<basename>(bool fResolveAllImports, pErrInfo);\n"
1693	" The default is not to include it.\n"
1694	" --system\n"
1695	" The library is a system DLL to be loaded using RTLdrLoadSystem.\n"
1696	" The default is to use SUPR3HardenedLdrLoadAppPriv to load it.\n"
1697	"\n"
1698	, pszArgv0);
1699
1700	return RTEXITCODE_SUCCESS;
1701	}
1702
1703
1704	int main(int argc, char **argv)
1705	{
1706	/*
1707	* Parse options.
1708	*/
1709	for (int i = 1; i < argc; i++)
1710	{
1711	const char *psz = argv[i];
1712	if (*psz == '-')
1713	{
1714	if (!strcmp(psz, "--output") \|\| !strcmp(psz, "-o"))
1715	{
1716	if (++i >= argc)
1717	{
1718	fprintf(stderr, "syntax error: File name expected after '%s'.\n", psz);
1719	return RTEXITCODE_SYNTAX;
1720	}
1721	g_pszOutput = argv[i];
1722	}
1723	else if (!strcmp(psz, "--library") \|\| !strcmp(psz, "-l"))
1724	{
1725	if (++i >= argc)
1726	{
1727	fprintf(stderr, "syntax error: Library name expected after '%s'.\n", psz);
1728	return RTEXITCODE_SYNTAX;
1729	}
1730	g_pszLibrary = argv[i];
1731	}
1732	else if (!strcmp(psz, "--explicit-load-function"))
1733	g_fWithExplictLoadFunction = true;
1734	else if (!strcmp(psz, "--no-explicit-load-function"))
1735	g_fWithExplictLoadFunction = false;
1736	else if (!strcmp(psz, "--system"))
1737	g_fSystemLibrary = true;
1738	/** @todo Support different load methods so this can be used on system libs and
1739	* such if we like. */
1740	else if ( !strcmp(psz, "--help")
1741	\|\| !strcmp(psz, "-help")
1742	\|\| !strcmp(psz, "-h")
1743	\|\| !strcmp(psz, "-?") )
1744	return usage(argv[0]);
1745	else if ( !strcmp(psz, "--version")
1746	\|\| !strcmp(psz, "-V"))
1747	{
1748	printf("$Revision: 99552 $\n");
1749	return RTEXITCODE_SUCCESS;
1750	}
1751	else
1752	{
1753	fprintf(stderr, "syntax error: Unknown option '%s'.\n", psz);
1754	return RTEXITCODE_SYNTAX;
1755	}
1756	}
1757	else
1758	{
1759	if (g_cInputs >= RT_ELEMENTS(g_apszInputs))
1760	{
1761	fprintf(stderr, "syntax error: Too many input files, max is %d.\n", (int)RT_ELEMENTS(g_apszInputs));
1762	return RTEXITCODE_SYNTAX;
1763	}
1764	g_apszInputs[g_cInputs++] = argv[i];
1765	}
1766	}
1767	if (g_cInputs == 0)
1768	{
1769	fprintf(stderr, "syntax error: No input file specified.\n");
1770	return RTEXITCODE_SYNTAX;
1771	}
1772	if (!g_pszOutput)
1773	{
1774	fprintf(stderr, "syntax error: No output file specified.\n");
1775	return RTEXITCODE_SYNTAX;
1776	}
1777	if (!g_pszLibrary)
1778	{
1779	fprintf(stderr, "syntax error: No library name specified.\n");
1780	return RTEXITCODE_SYNTAX;
1781	}
1782
1783	/*
1784	* Do the job.
1785	*/
1786	RTEXITCODE rcExit = parseInputs();
1787	if (rcExit == RTEXITCODE_SUCCESS)
1788	rcExit = generateOutput();
1789	return rcExit;
1790	}
1791

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source: vbox/trunk/src/bldprogs/VBoxDef2LazyLoad.cpp@ 100111

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