DBGPlugInDarwin.cpp@ 83083

Last change on this file since 83083 was 83083, checked in by vboxsync, 5 years ago
DBGPlugInDarwin.cpp: Hacking.
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1	/* $Id: DBGPlugInDarwin.cpp 83083 2020-02-15 02:23:57Z vboxsync $ */
2	/** @file
3	* DBGPlugInDarwin - Debugger and Guest OS Digger Plugin For Darwin / OS X.
4	*/
5
6	/*
7	* Copyright (C) 2008-2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DBGF /// @todo add new log group.
23	#include "DBGPlugIns.h"
24	#include <VBox/vmm/dbgf.h>
25	#include <iprt/err.h>
26	#include <iprt/mem.h>
27	#include <iprt/stream.h>
28	#include <iprt/string.h>
29	#include <iprt/uuid.h>
30	#include <iprt/ctype.h>
31	#include <iprt/formats/mach-o.h>
32
33	#undef LogRel2
34	#define LogRel2 LogRel
35
36
37	/*********************************************************************************************************************************
38	* Structures and Typedefs *
39	*********************************************************************************************************************************/
40
41	/** @name Internal Darwin structures
42	* @{ */
43
44	/**
45	* 32-bit darwin kernel module info structure (kmod_info_t).
46	*/
47	typedef struct OSX32_kmod_info
48	{
49	uint32_t next;
50	int32_t info_version;
51	uint32_t id;
52	char name[64];
53	char version[64];
54	int32_t reference_count;
55	uint32_t reference_list; /*< Points to kmod_reference_t. /
56	uint32_t address; /*< Where in memory the kext is loaded. /
57	uint32_t size;
58	uint32_t hdr_size;
59	uint32_t start; /*< Address of kmod_start_func_t. /
60	uint32_t stop; /*< Address of kmod_stop_func_t. /
61	} OSX32_kmod_info_t;
62
63	/**
64	* 32-bit darwin kernel module info structure (kmod_info_t).
65	*/
66	#pragma pack(1)
67	typedef struct OSX64_kmod_info
68	{
69	uint64_t next;
70	int32_t info_version;
71	uint32_t id;
72	char name[64];
73	char version[64];
74	int32_t reference_count;
75	uint64_t reference_list; /*< Points to kmod_reference_t. Misaligned, duh. /
76	uint64_t address; /*< Where in memory the kext is loaded. /
77	uint64_t size;
78	uint64_t hdr_size;
79	uint64_t start; /*< Address of kmod_start_func_t. /
80	uint64_t stop; /*< Address of kmod_stop_func_t. /
81	} OSX64_kmod_info_t;
82	#pragma pack()
83
84	/** The value of the info_version field. */
85	#define OSX_KMOD_INFO_VERSION INT32_C(1)
86
87	/** @} */
88
89
90	/**
91	* Linux guest OS digger instance data.
92	*/
93	typedef struct DBGDIGGERDARWIN
94	{
95	/** Whether the information is valid or not.
96	* (For fending off illegal interface method calls.) */
97	bool fValid;
98
99	/** Set if 64-bit kernel, clear if 32-bit.
100	* Set during probing. */
101	bool f64Bit;
102	/** The address of an kernel version string (there are several).
103	* This is set during probing. */
104	DBGFADDRESS AddrKernelVersion;
105	/** Kernel base address.
106	* This is set during probing. */
107	DBGFADDRESS AddrKernel;
108
109	/** The kernel message log interface. */
110	DBGFOSIDMESG IDmesg;
111	} DBGDIGGERDARWIN;
112	/** Pointer to the linux guest OS digger instance data. */
113	typedef DBGDIGGERDARWIN *PDBGDIGGERDARWIN;
114
115
116	/*********************************************************************************************************************************
117	* Defined Constants And Macros *
118	*********************************************************************************************************************************/
119	/** Validates a 32-bit darwin kernel address */
120	#define OSX32_VALID_ADDRESS(Addr) ((Addr) > UINT32_C(0x00001000) && (Addr) < UINT32_C(0xfffff000))
121	/** Validates a 64-bit darwin kernel address */
122	#define OSX64_VALID_ADDRESS(Addr) ((Addr) > UINT64_C(0xffff800000000000) && (Addr) < UINT64_C(0xfffffffffffff000))
123	/** Validates a 32-bit or 64-bit darwin kernel address. */
124	#define OSX_VALID_ADDRESS(a_f64Bits, a_Addr) \
125	((a_f64Bits) ? OSX64_VALID_ADDRESS(a_Addr) : OSX32_VALID_ADDRESS(a_Addr))
126
127	/** AppleOsX on little endian ASCII systems. */
128	#define DIG_DARWIN_MOD_TAG UINT64_C(0x58734f656c707041)
129
130
131	/*********************************************************************************************************************************
132	* Internal Functions *
133	*********************************************************************************************************************************/
134	static DECLCALLBACK(int) dbgDiggerDarwinInit(PUVM pUVM, void *pvData);
135
136
137
138	/**
139	* @interface_method_impl{DBGFOSIDMESG,pfnQueryKernelLog}
140	*/
141	static DECLCALLBACK(int) dbgDiggerDarwinIDmsg_QueryKernelLog(PDBGFOSIDMESG pThis, PUVM pUVM, uint32_t fFlags, uint32_t cMessages,
142	char pszBuf, size_t cbBuf, size_t pcbActual)
143	{
144	RT_NOREF1(fFlags);
145	PDBGDIGGERDARWIN pData = RT_FROM_MEMBER(pThis, DBGDIGGERDARWIN, IDmesg);
146
147	if (cMessages < 1)
148	return VERR_INVALID_PARAMETER;
149
150	/*
151	* The 'msgbufp' variable points to a struct msgbuf (bsd/kern/subr_log.c).
152	*/
153	RTDBGAS hAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
154	RTDBGMOD hMod;
155	int rc = RTDbgAsModuleByName(hAs, "mach_kernel", 0, &hMod);
156	if (RT_FAILURE(rc))
157	return VERR_NOT_FOUND;
158	RTDbgAsRelease(hAs);
159
160	DBGFADDRESS Addr;
161	RTGCPTR GCPtrMsgBufP = 0;
162	RTDBGSYMBOL SymInfo;
163	rc = RTDbgModSymbolByName(hMod, "_msgbufp", &SymInfo);
164	if (RT_SUCCESS(rc))
165	{
166	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, DBGFR3AddrFromFlat(pUVM, &Addr, SymInfo.Value + pData->AddrKernel.FlatPtr),
167	&GCPtrMsgBufP, pData->f64Bit ? sizeof(uint64_t) : sizeof(uint32_t));
168	if (RT_FAILURE(rc))
169	{
170	LogRel(("dbgDiggerDarwinIDmsg_QueryKernelLog: failed to read _msgbufp at %RGv: %Rrc\n", Addr.FlatPtr, rc));
171	return VERR_NOT_FOUND;
172	}
173	if (!OSX_VALID_ADDRESS(pData->f64Bit, GCPtrMsgBufP))
174	{
175	LogRel(("dbgDiggerDarwinIDmsg_QueryKernelLog: Invalid address for _msgbufp: %RGv\n", GCPtrMsgBufP));
176	return VERR_NOT_FOUND;
177	}
178	}
179	else
180	{
181	rc = RTDbgModSymbolByName(hMod, "_msgbuf", &SymInfo);
182	if (RT_FAILURE(rc))
183	{
184	LogRel(("dbgDiggerDarwinIDmsg_QueryKernelLog: failed to find _msgbufp and _msgbuf: %Rrc\n", rc));
185	return VERR_NOT_FOUND;
186	}
187	GCPtrMsgBufP = SymInfo.Value + pData->AddrKernel.FlatPtr;
188	if (!OSX_VALID_ADDRESS(pData->f64Bit, GCPtrMsgBufP))
189	{
190	LogRel(("dbgDiggerDarwinIDmsg_QueryKernelLog: Invalid address for _msgbuf: %RGv\n", GCPtrMsgBufP));
191	return VERR_NOT_FOUND;
192	}
193	}
194
195	/*
196	* Read the msgbuf structure.
197	*/
198	struct
199	{
200	uint32_t msg_magic;
201	uint32_t msg_size;
202	uint32_t msg_bufx;
203	uint32_t msg_bufr;
204	uint64_t msg_bufc; /*< Size depends on windows size. /
205	} MsgBuf;
206	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, DBGFR3AddrFromFlat(pUVM, &Addr, GCPtrMsgBufP),
207	&MsgBuf, sizeof(MsgBuf) - (pData->f64Bit ? 0 : sizeof(uint32_t)) );
208	if (RT_FAILURE(rc))
209	{
210	LogRel(("dbgDiggerDarwinIDmsg_QueryKernelLog: failed to read msgbuf struct at %RGv: %Rrc\n", Addr.FlatPtr, rc));
211	return VERR_NOT_FOUND;
212	}
213	if (!pData->f64Bit)
214	MsgBuf.msg_bufc &= UINT32_MAX;
215
216	/*
217	* Validate the structure.
218	*/
219	if ( MsgBuf.msg_magic != UINT32_C(0x63061)
220	\|\| MsgBuf.msg_size < UINT32_C(4096)
221	\|\| MsgBuf.msg_size > 16*_1M
222	\|\| MsgBuf.msg_bufx > MsgBuf.msg_size
223	\|\| MsgBuf.msg_bufr > MsgBuf.msg_size
224	\|\| !OSX_VALID_ADDRESS(pData->f64Bit, MsgBuf.msg_bufc) )
225	{
226	LogRel(("dbgDiggerDarwinIDmsg_QueryKernelLog: Invalid MsgBuf data: magic=%#x size=%#x bufx=%#x bufr=%#x bufc=%RGv\n",
227	MsgBuf.msg_magic, MsgBuf.msg_size, MsgBuf.msg_bufx, MsgBuf.msg_bufr, MsgBuf.msg_bufc));
228	return VERR_INVALID_STATE;
229	}
230
231	/*
232	* Read the buffer.
233	*/
234	char pchMsgBuf = (char )RTMemAlloc(MsgBuf.msg_size);
235	if (!pchMsgBuf)
236	{
237	LogRel(("dbgDiggerDarwinIDmsg_QueryKernelLog: Failed to allocate %#x bytes of memory for the log buffer\n",
238	MsgBuf.msg_size));
239	return VERR_INVALID_STATE;
240	}
241	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, DBGFR3AddrFromFlat(pUVM, &Addr, MsgBuf.msg_bufc), pchMsgBuf, MsgBuf.msg_size);
242	if (RT_SUCCESS(rc))
243	{
244	/*
245	* Copy it out raw.
246	*/
247	uint32_t offDst = 0;
248	if (MsgBuf.msg_bufr < MsgBuf.msg_bufx)
249	{
250	/* Single chunk between the read and write offsets. */
251	uint32_t cbToCopy = MsgBuf.msg_bufx - MsgBuf.msg_bufr;
252	if (cbToCopy < cbBuf)
253	{
254	memcpy(pszBuf, &pchMsgBuf[MsgBuf.msg_bufr], cbToCopy);
255	pszBuf[cbToCopy] = '\0';
256	rc = VINF_SUCCESS;
257	}
258	else
259	{
260	if (cbBuf)
261	{
262	memcpy(pszBuf, &pchMsgBuf[MsgBuf.msg_bufr], cbBuf - 1);
263	pszBuf[cbBuf - 1] = '\0';
264	}
265	rc = VERR_BUFFER_OVERFLOW;
266	}
267	offDst = cbToCopy + 1;
268	}
269	else
270	{
271	/* Two chunks, read offset to end, start to write offset. */
272	uint32_t cbFirst = MsgBuf.msg_size - MsgBuf.msg_bufr;
273	uint32_t cbSecond = MsgBuf.msg_bufx;
274	if (cbFirst + cbSecond < cbBuf)
275	{
276	memcpy(pszBuf, &pchMsgBuf[MsgBuf.msg_bufr], cbFirst);
277	memcpy(&pszBuf[cbFirst], pchMsgBuf, cbSecond);
278	offDst = cbFirst + cbSecond;
279	pszBuf[offDst++] = '\0';
280	rc = VINF_SUCCESS;
281	}
282	else
283	{
284	offDst = cbFirst + cbSecond + 1;
285	if (cbFirst < cbBuf)
286	{
287	memcpy(pszBuf, &pchMsgBuf[MsgBuf.msg_bufr], cbFirst);
288	memcpy(&pszBuf[cbFirst], pchMsgBuf, cbBuf - cbFirst);
289	pszBuf[cbBuf - 1] = '\0';
290	}
291	else if (cbBuf)
292	{
293	memcpy(pszBuf, &pchMsgBuf[MsgBuf.msg_bufr], cbBuf - 1);
294	pszBuf[cbBuf - 1] = '\0';
295	}
296	rc = VERR_BUFFER_OVERFLOW;
297	}
298	}
299
300	if (pcbActual)
301	*pcbActual = offDst;
302	}
303	else
304	LogRel(("dbgDiggerDarwinIDmsg_QueryKernelLog: Error reading %#x bytes at %RGv: %Rrc\n",
305	MsgBuf.msg_size, MsgBuf.msg_bufc, rc));
306	RTMemFree(pchMsgBuf);
307	return rc;
308	}
309
310
311	/**
312	* @copydoc DBGFOSREG::pfnStackUnwindAssist
313	*/
314	static DECLCALLBACK(int) dbgDiggerDarwinStackUnwindAssist(PUVM pUVM, void *pvData, VMCPUID idCpu, PDBGFSTACKFRAME pFrame,
315	PRTDBGUNWINDSTATE pState, PCCPUMCTX pInitialCtx, RTDBGAS hAs,
316	uint64_t *puScratch)
317	{
318	RT_NOREF(pUVM, pvData, idCpu, pFrame, pState, pInitialCtx, hAs, puScratch);
319	return VINF_SUCCESS;
320	}
321
322
323	/**
324	* @copydoc DBGFOSREG::pfnQueryInterface
325	*/
326	static DECLCALLBACK(void ) dbgDiggerDarwinQueryInterface(PUVM pUVM, void pvData, DBGFOSINTERFACE enmIf)
327	{
328	RT_NOREF1(pUVM);
329	PDBGDIGGERDARWIN pThis = (PDBGDIGGERDARWIN)pvData;
330	switch (enmIf)
331	{
332	case DBGFOSINTERFACE_DMESG:
333	return &pThis->IDmesg;
334
335	default:
336	return NULL;
337	}
338	}
339
340
341	/**
342	* @copydoc DBGFOSREG::pfnQueryVersion
343	*/
344	static DECLCALLBACK(int) dbgDiggerDarwinQueryVersion(PUVM pUVM, void pvData, char pszVersion, size_t cchVersion)
345	{
346	PDBGDIGGERDARWIN pThis = (PDBGDIGGERDARWIN)pvData;
347	Assert(pThis->fValid);
348
349	/*
350	* It's all in the linux banner.
351	*/
352	int rc = DBGFR3MemReadString(pUVM, 0, &pThis->AddrKernelVersion, pszVersion, cchVersion);
353	if (RT_SUCCESS(rc))
354	{
355	char *pszEnd = RTStrEnd(pszVersion, cchVersion);
356	AssertReturn(pszEnd, VERR_BUFFER_OVERFLOW);
357	while ( pszEnd > pszVersion
358	&& RT_C_IS_SPACE(pszEnd[-1]))
359	pszEnd--;
360	*pszEnd = '\0';
361	}
362	else
363	RTStrPrintf(pszVersion, cchVersion, "DBGFR3MemRead -> %Rrc", rc);
364
365	return rc;
366	}
367
368
369	/**
370	* @copydoc DBGFOSREG::pfnTerm
371	*/
372	static DECLCALLBACK(void) dbgDiggerDarwinTerm(PUVM pUVM, void *pvData)
373	{
374	RT_NOREF1(pUVM);
375	PDBGDIGGERDARWIN pThis = (PDBGDIGGERDARWIN)pvData;
376
377	pThis->fValid = false;
378	}
379
380
381	/**
382	* @copydoc DBGFOSREG::pfnRefresh
383	*/
384	static DECLCALLBACK(int) dbgDiggerDarwinRefresh(PUVM pUVM, void *pvData)
385	{
386	PDBGDIGGERDARWIN pThis = (PDBGDIGGERDARWIN)pvData;
387	NOREF(pThis);
388	Assert(pThis->fValid);
389
390	/*
391	* For now we'll flush and reload everything.
392	*/
393	dbgDiggerDarwinTerm(pUVM, pvData);
394	return dbgDiggerDarwinInit(pUVM, pvData);
395	}
396
397
398	/**
399	* Helper function that tries to accertain whether a segment (__LINKEDIT) is
400	* present or not.
401	*
402	* @returns true if present, false if not.
403	* @param pUVM The user mode VM structure.
404	* @param uSegAddr The segment addresss.
405	* @param cbSeg The segment size.
406	* @param uMinAddr Lowest allowed address.
407	* @param uMaxAddr Highest allowed address.
408	*/
409	static int dbgDiggerDarwinIsSegmentPresent(PUVM pUVM, uint64_t uSegAddr, uint64_t cbSeg, uint64_t uMinAddr, uint64_t uMaxAddr)
410	{
411	/*
412	* Validate the size and address.
413	*/
414	if (cbSeg < 32)
415	{
416	LogRel(("OSXDig: __LINKEDIT too small %#RX64\n", cbSeg));
417	return false;
418	}
419	if (cbSeg > uMaxAddr - uMinAddr)
420	{
421	LogRel(("OSXDig: __LINKEDIT too big %#RX64, max %#RX64\n", cbSeg, uMaxAddr - uMinAddr));
422	return false;
423	}
424
425	if (uSegAddr < uMinAddr)
426	{
427	LogRel(("OSXDig: __LINKEDIT too low %#RX64, min %#RX64\n", uSegAddr, uMinAddr));
428	return false;
429	}
430	if (uSegAddr > uMaxAddr)
431	{
432	LogRel(("OSXDig: __LINKEDIT too high %#RX64, max %#RX64\n", uSegAddr, uMaxAddr));
433	return false;
434	}
435	if (uSegAddr + cbSeg > uMaxAddr)
436	{
437	LogRel(("OSXDig: __LINKEDIT ends too high %#RX64 (%#RX64+%#RX64), max %#RX64\n",
438	uSegAddr + cbSeg, uSegAddr, cbSeg, uMaxAddr));
439	return false;
440	}
441
442	/*
443	* Check that all the pages are present.
444	*/
445	cbSeg += uSegAddr & X86_PAGE_OFFSET_MASK;
446	uSegAddr &= ~(uint64_t)X86_PAGE_OFFSET_MASK;
447	for (;;)
448	{
449	uint8_t abBuf[8];
450	DBGFADDRESS Addr;
451	int rc = DBGFR3MemRead(pUVM, 0 /idCpu/, DBGFR3AddrFromFlat(pUVM, &Addr, uSegAddr), abBuf, sizeof(abBuf));
452	if (RT_FAILURE(rc))
453	{
454	LogRel(("OSXDig: __LINKEDIT read error at %#RX64: %Rrc\n", uSegAddr, rc));
455	return false;
456	}
457
458	/* Advance */
459	if (cbSeg <= X86_PAGE_SIZE)
460	return true;
461	cbSeg -= X86_PAGE_SIZE;
462	uSegAddr += X86_PAGE_SIZE;
463	}
464	}
465
466
467	/**
468	* Helper function that validates a segment (or section) name.
469	*
470	* @returns true if valid, false if not.
471	* @param pszName The name string.
472	* @param cbName The size of the string, including terminator.
473	*/
474	static bool dbgDiggerDarwinIsValidSegOrSectName(const char *pszName, size_t cbName)
475	{
476	/* ascii chars */
477	char ch;
478	size_t off = 0;
479	while (off < cbName && (ch = pszName[off]))
480	{
481	if (RT_C_IS_CNTRL(ch) \|\| ch >= 127)
482	return false;
483	off++;
484	}
485
486	/* Not empty nor 100% full. */
487	if (off == 0 \|\| off == cbName)
488	return false;
489
490	/* remainder should be zeros. */
491	while (off < cbName)
492	{
493	if (pszName[off])
494	return false;
495	off++;
496	}
497
498	return true;
499	}
500
501
502	static int dbgDiggerDarwinAddModule(PDBGDIGGERDARWIN pThis, PUVM pUVM, uint64_t uModAddr, const char pszName, bool pf64Bit)
503	{
504	RT_NOREF1(pThis);
505	union
506	{
507	uint8_t ab[2 * X86_PAGE_4K_SIZE];
508	mach_header_64_t Hdr64;
509	mach_header_32_t Hdr32;
510	} uBuf;
511
512	/* Read the first page of the image. */
513	DBGFADDRESS ModAddr;
514	int rc = DBGFR3MemRead(pUVM, 0 /idCpu/, DBGFR3AddrFromFlat(pUVM, &ModAddr, uModAddr), uBuf.ab, X86_PAGE_4K_SIZE);
515	if (RT_FAILURE(rc))
516	return rc;
517
518	/* Validate the header. */
519	AssertCompileMembersSameSizeAndOffset(mach_header_64_t, magic, mach_header_32_t, magic);
520	if ( uBuf.Hdr64.magic != IMAGE_MACHO64_SIGNATURE
521	&& uBuf.Hdr32.magic != IMAGE_MACHO32_SIGNATURE)
522	return VERR_INVALID_EXE_SIGNATURE;
523	AssertCompileMembersSameSizeAndOffset(mach_header_64_t, cputype, mach_header_32_t, cputype);
524	bool f64Bit = uBuf.Hdr64.magic == IMAGE_MACHO64_SIGNATURE;
525	if (uBuf.Hdr32.cputype != (f64Bit ? CPU_TYPE_X86_64 : CPU_TYPE_I386))
526	return VERR_LDR_ARCH_MISMATCH;
527	AssertCompileMembersSameSizeAndOffset(mach_header_64_t, filetype, mach_header_32_t, filetype);
528	if ( uBuf.Hdr32.filetype != MH_EXECUTE
529	&& uBuf.Hdr32.filetype != (f64Bit ? MH_KEXT_BUNDLE : MH_OBJECT))
530	return VERR_BAD_EXE_FORMAT;
531	AssertCompileMembersSameSizeAndOffset(mach_header_64_t, ncmds, mach_header_32_t, ncmds);
532	if (uBuf.Hdr32.ncmds > 256)
533	return VERR_BAD_EXE_FORMAT;
534	AssertCompileMembersSameSizeAndOffset(mach_header_64_t, sizeofcmds, mach_header_32_t, sizeofcmds);
535	if (uBuf.Hdr32.sizeofcmds > X86_PAGE_4K_SIZE * 2 - sizeof(mach_header_64_t))
536	return VERR_BAD_EXE_FORMAT;
537
538	/* Do we need to read a 2nd page to get all the load commands? If so, do it. */
539	if (uBuf.Hdr32.sizeofcmds + (f64Bit ? sizeof(mach_header_64_t) : sizeof(mach_header_32_t)) > X86_PAGE_4K_SIZE)
540	{
541	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, DBGFR3AddrFromFlat(pUVM, &ModAddr, uModAddr + X86_PAGE_4K_SIZE),
542	&uBuf.ab[X86_PAGE_4K_SIZE], X86_PAGE_4K_SIZE);
543	if (RT_FAILURE(rc))
544	return rc;
545	}
546
547	/*
548	* Process the load commands.
549	*/
550	RTDBGSEGMENT aSegs[24];
551	uint32_t cSegs = 0;
552	RTUUID Uuid = RTUUID_INITIALIZE_NULL;
553	uint32_t cLeft = uBuf.Hdr32.ncmds;
554	uint32_t cbLeft = uBuf.Hdr32.sizeofcmds;
555	union
556	{
557	uint8_t const *pb;
558	load_command_t const *pGenric;
559	segment_command_32_t const *pSeg32;
560	segment_command_64_t const *pSeg64;
561	section_32_t const *pSect32;
562	section_64_t const *pSect64;
563	symtab_command_t const *pSymTab;
564	uuid_command_t const *pUuid;
565	} uLCmd;
566	uLCmd.pb = &uBuf.ab[f64Bit ? sizeof(mach_header_64_t) : sizeof(mach_header_32_t)];
567
568	while (cLeft-- > 0)
569	{
570	uint32_t const cbCmd = uLCmd.pGenric->cmdsize;
571	if (cbCmd > cbLeft \|\| cbCmd < sizeof(load_command_t))
572	return VERR_BAD_EXE_FORMAT;
573
574	switch (uLCmd.pGenric->cmd)
575	{
576	case LC_SEGMENT_32:
577	if (cbCmd != sizeof(segment_command_32_t) + uLCmd.pSeg32->nsects * sizeof(section_32_t))
578	return VERR_BAD_EXE_FORMAT;
579	if (!dbgDiggerDarwinIsValidSegOrSectName(uLCmd.pSeg32->segname, sizeof(uLCmd.pSeg32->segname)))
580	return VERR_INVALID_NAME;
581	if ( !strcmp(uLCmd.pSeg32->segname, "__LINKEDIT")
582	&& !dbgDiggerDarwinIsSegmentPresent(pUVM, uLCmd.pSeg32->vmaddr, uLCmd.pSeg32->vmsize,
583	uModAddr, uModAddr + _64M))
584	break; /* This usually is discarded or not loaded at all. */
585	if (cSegs >= RT_ELEMENTS(aSegs))
586	return VERR_BUFFER_OVERFLOW;
587	aSegs[cSegs].Address = uLCmd.pSeg32->vmaddr;
588	aSegs[cSegs].uRva = uLCmd.pSeg32->vmaddr - uModAddr;
589	aSegs[cSegs].cb = uLCmd.pSeg32->vmsize;
590	aSegs[cSegs].fFlags = uLCmd.pSeg32->flags; /* Abusing the flags field here... */
591	aSegs[cSegs].iSeg = cSegs;
592	AssertCompile(RTDBG_SEGMENT_NAME_LENGTH > sizeof(uLCmd.pSeg32->segname));
593	strcpy(aSegs[cSegs].szName, uLCmd.pSeg32->segname);
594	cSegs++;
595	break;
596
597	case LC_SEGMENT_64:
598	if (cbCmd != sizeof(segment_command_64_t) + uLCmd.pSeg64->nsects * sizeof(section_64_t))
599	return VERR_BAD_EXE_FORMAT;
600	if (!dbgDiggerDarwinIsValidSegOrSectName(uLCmd.pSeg64->segname, sizeof(uLCmd.pSeg64->segname)))
601	return VERR_INVALID_NAME;
602	if ( !strcmp(uLCmd.pSeg64->segname, "__LINKEDIT")
603	&& !dbgDiggerDarwinIsSegmentPresent(pUVM, uLCmd.pSeg64->vmaddr, uLCmd.pSeg64->vmsize,
604	uModAddr, uModAddr + _128M))
605	break; /* This usually is discarded or not loaded at all. */
606	if (cSegs >= RT_ELEMENTS(aSegs))
607	return VERR_BUFFER_OVERFLOW;
608	aSegs[cSegs].Address = uLCmd.pSeg64->vmaddr;
609	aSegs[cSegs].uRva = uLCmd.pSeg64->vmaddr - uModAddr;
610	aSegs[cSegs].cb = uLCmd.pSeg64->vmsize;
611	aSegs[cSegs].fFlags = uLCmd.pSeg64->flags; /* Abusing the flags field here... */
612	aSegs[cSegs].iSeg = cSegs;
613	AssertCompile(RTDBG_SEGMENT_NAME_LENGTH > sizeof(uLCmd.pSeg64->segname));
614	strcpy(aSegs[cSegs].szName, uLCmd.pSeg64->segname);
615	cSegs++;
616	break;
617
618	case LC_UUID:
619	if (cbCmd != sizeof(uuid_command_t))
620	return VERR_BAD_EXE_FORMAT;
621	if (RTUuidIsNull((PCRTUUID)&uLCmd.pUuid->uuid[0]))
622	return VERR_BAD_EXE_FORMAT;
623	memcpy(&Uuid, &uLCmd.pUuid->uuid[0], sizeof(uLCmd.pUuid->uuid));
624	break;
625
626	default:
627	/* Current known max plus a lot of slack. */
628	if (uLCmd.pGenric->cmd > LC_DYLIB_CODE_SIGN_DRS + 32)
629	return VERR_BAD_EXE_FORMAT;
630	break;
631	}
632
633	/* next */
634	cbLeft -= cbCmd;
635	uLCmd.pb += cbCmd;
636	}
637
638	if (cbLeft != 0)
639	return VERR_BAD_EXE_FORMAT;
640
641	/*
642	* Some post processing checks.
643	*/
644	uint32_t iSeg;
645	for (iSeg = 0; iSeg < cSegs; iSeg++)
646	if (aSegs[iSeg].Address == uModAddr)
647	break;
648	if (iSeg >= cSegs)
649	{
650	LogRel2(("OSXDig: uModAddr=%#RX64 was not found among the segments segments\n", uModAddr));
651	return VERR_ADDRESS_CONFLICT;
652	}
653
654	/*
655	* Create a debug module.
656	*/
657	RTDBGMOD hMod;
658	rc = RTDbgModCreateFromMachOImage(&hMod, pszName, NULL, f64Bit ? RTLDRARCH_AMD64 : RTLDRARCH_X86_32, 0 /cbImage/,
659	cSegs, aSegs, &Uuid, DBGFR3AsGetConfig(pUVM), RTDBGMOD_F_NOT_DEFERRED);
660
661	if (RT_FAILURE(rc))
662	{
663	/** @todo try open in memory. */
664
665	/*
666	* Final fallback is a container module.
667	*/
668	rc = RTDbgModCreate(&hMod, pszName, 0, 0);
669	if (RT_FAILURE(rc))
670	return rc;
671
672	uint64_t uRvaNext = 0;
673	for (iSeg = 0; iSeg < cSegs && RT_SUCCESS(rc); iSeg++)
674	{
675	if ( aSegs[iSeg].uRva > uRvaNext
676	&& aSegs[iSeg].uRva - uRvaNext < _1M)
677	uRvaNext = aSegs[iSeg].uRva;
678	rc = RTDbgModSegmentAdd(hMod, aSegs[iSeg].uRva, aSegs[iSeg].cb, aSegs[iSeg].szName, 0, NULL);
679	if (aSegs[iSeg].cb > 0 && RT_SUCCESS(rc))
680	{
681	char szTmp[RTDBG_SEGMENT_NAME_LENGTH + sizeof("_start")];
682	strcat(strcpy(szTmp, aSegs[iSeg].szName), "_start");
683	rc = RTDbgModSymbolAdd(hMod, szTmp, iSeg, 0 /uRva/, 0 /cb/, 0 /fFlags/, NULL);
684	}
685	uRvaNext += aSegs[iSeg].cb;
686	}
687
688	if (RT_FAILURE(rc))
689	{
690	RTDbgModRelease(hMod);
691	return rc;
692	}
693	}
694
695	/* Tag the module. */
696	rc = RTDbgModSetTag(hMod, DIG_DARWIN_MOD_TAG);
697	AssertRC(rc);
698
699	/*
700	* Link the module.
701	*/
702	RTDBGAS hAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
703	if (hAs != NIL_RTDBGAS)
704	{
705	//uint64_t uRvaNext = 0; - what was this?
706	uint32_t cLinked = 0;
707	iSeg = cSegs;
708	while (iSeg-- > 0) /* HACK: Map in reverse order to avoid replacing __TEXT. */
709	if (aSegs[iSeg].cb)
710	{
711	/* Find matching segment in the debug module. */
712	uint32_t iDbgSeg = 0;
713	while (iDbgSeg < cSegs)
714	{
715	RTDBGSEGMENT SegInfo;
716	int rc3 = RTDbgModSegmentByIndex(hMod, iDbgSeg, &SegInfo);
717	if (RT_SUCCESS(rc3) && !strcmp(SegInfo.szName, aSegs[iSeg].szName))
718	break;
719	iDbgSeg++;
720	}
721	AssertMsgStmt(iDbgSeg < cSegs, ("%s\n", aSegs[iSeg].szName), continue);
722
723	/* Map it. */
724	int rc2 = RTDbgAsModuleLinkSeg(hAs, hMod, iDbgSeg, aSegs[iSeg].Address, RTDBGASLINK_FLAGS_REPLACE /fFlags/);
725	if (RT_SUCCESS(rc2))
726	cLinked++;
727	else if (RT_SUCCESS(rc))
728	rc = rc2;
729	}
730	if (RT_FAILURE(rc) && cLinked != 0)
731	rc = -rc;
732	}
733	else
734	rc = VERR_INTERNAL_ERROR;
735
736	RTDbgModRelease(hMod);
737	RTDbgAsRelease(hAs);
738
739	if (pf64Bit)
740	*pf64Bit = f64Bit;
741	return rc;
742	}
743
744
745	static bool dbgDiggerDarwinIsValidName(const char *pszName)
746	{
747	char ch;
748	while ((ch = *pszName++) != '\0')
749	{
750	if (ch < 0x20 \|\| ch >= 127)
751	return false;
752	}
753	return true;
754	}
755
756
757	static bool dbgDiggerDarwinIsValidVersion(const char *pszVersion)
758	{
759	char ch;
760	while ((ch = *pszVersion++) != '\0')
761	{
762	if (ch < 0x20 \|\| ch >= 127)
763	return false;
764	}
765	return true;
766	}
767
768
769	/**
770	* @copydoc DBGFOSREG::pfnInit
771	*/
772	static DECLCALLBACK(int) dbgDiggerDarwinInit(PUVM pUVM, void *pvData)
773	{
774	PDBGDIGGERDARWIN pThis = (PDBGDIGGERDARWIN)pvData;
775	Assert(!pThis->fValid);
776
777	/*
778	* Add the kernel module.
779	*/
780	bool f64Bit;
781	int rc = dbgDiggerDarwinAddModule(pThis, pUVM, pThis->AddrKernel.FlatPtr, "mach_kernel", &f64Bit);
782	if (RT_SUCCESS(rc))
783	{
784	/*
785	* The list of modules can be found at the 'kmod' symbol, that means
786	* that we currently require some kind of symbol file for the kernel
787	* to be loaded at this point.
788	*
789	* Note! Could also use the 'gLoadedKextSummaries', but I don't think
790	* it's any easier to find without any kernel map than 'kmod'.
791	*/
792	RTDBGSYMBOL SymInfo;
793	rc = DBGFR3AsSymbolByName(pUVM, DBGF_AS_KERNEL, "mach_kernel!kmod", &SymInfo, NULL);
794	if (RT_FAILURE(rc))
795	rc = DBGFR3AsSymbolByName(pUVM, DBGF_AS_KERNEL, "mach_kernel!_kmod", &SymInfo, NULL);
796	if (RT_SUCCESS(rc))
797	{
798	DBGFADDRESS AddrModInfo;
799	DBGFR3AddrFromFlat(pUVM, &AddrModInfo, SymInfo.Value);
800
801	/* Read the variable. */
802	RTUINT64U uKmodValue = { 0 };
803	if (f64Bit)
804	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, &AddrModInfo, &uKmodValue.u, sizeof(uKmodValue.u));
805	else
806	rc = DBGFR3MemRead (pUVM, 0 /idCpu/, &AddrModInfo, &uKmodValue.s.Lo, sizeof(uKmodValue.s.Lo));
807	if (RT_SUCCESS(rc))
808	{
809	DBGFR3AddrFromFlat(pUVM, &AddrModInfo, uKmodValue.u);
810
811	/* Walk the list of modules. */
812	uint32_t cIterations = 0;
813	while (AddrModInfo.FlatPtr != 0)
814	{
815	/* Some extra loop conditions... */
816	if (!OSX_VALID_ADDRESS(f64Bit, AddrModInfo.FlatPtr))
817	{
818	LogRel(("OSXDig: Invalid kmod_info pointer: %RGv\n", AddrModInfo.FlatPtr));
819	break;
820	}
821	if (AddrModInfo.FlatPtr == uKmodValue.u && cIterations != 0)
822	{
823	LogRel(("OSXDig: kmod_info list looped back to the start.\n"));
824	break;
825	}
826	if (cIterations++ >= 2048)
827	{
828	LogRel(("OSXDig: Too many mod_info loops (%u)\n", cIterations));
829	break;
830	}
831
832	/*
833	* Read the kmod_info_t structure.
834	*/
835	union
836	{
837	OSX64_kmod_info_t Info64;
838	OSX32_kmod_info_t Info32;
839	} uMod;
840	RT_ZERO(uMod);
841	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, &AddrModInfo, &uMod,
842	f64Bit ? sizeof(uMod.Info64) : sizeof(uMod.Info32));
843	if (RT_FAILURE(rc))
844	{
845	LogRel(("OSXDig: Error reading kmod_info structure at %RGv: %Rrc\n", AddrModInfo.FlatPtr, rc));
846	break;
847	}
848
849	/*
850	* Validate the kmod_info_t structure.
851	*/
852	int32_t iInfoVer = f64Bit ? uMod.Info64.info_version : uMod.Info32.info_version;
853	if (iInfoVer != OSX_KMOD_INFO_VERSION)
854	{
855	LogRel(("OSXDig: kmod_info @%RGv: Bad info_version %d\n", AddrModInfo.FlatPtr, iInfoVer));
856	break;
857	}
858
859	const char *pszName = f64Bit ? uMod.Info64.name : uMod.Info32.name;
860	if ( !*pszName
861	\|\| !RTStrEnd(pszName, sizeof(uMod.Info64.name))
862	\|\| !dbgDiggerDarwinIsValidName(pszName) )
863	{
864	LogRel(("OSXDig: kmod_info @%RGv: Bad name '%.*s'\n", AddrModInfo.FlatPtr,
865	sizeof(uMod.Info64.name), pszName));
866	break;
867	}
868
869	const char *pszVersion = f64Bit ? uMod.Info64.version : uMod.Info32.version;
870	if ( !RTStrEnd(pszVersion, sizeof(uMod.Info64.version))
871	\|\| !dbgDiggerDarwinIsValidVersion(pszVersion) )
872	{
873	LogRel(("OSXDig: kmod_info @%RGv: Bad version '%.*s'\n", AddrModInfo.FlatPtr,
874	sizeof(uMod.Info64.version), pszVersion));
875	break;
876	}
877
878	int32_t cRefs = f64Bit ? uMod.Info64.reference_count : uMod.Info32.reference_count;
879	if (cRefs < -1 \|\| cRefs > 16384)
880	{
881	LogRel(("OSXDig: kmod_info @%RGv: Bad reference_count %d\n", AddrModInfo.FlatPtr, cRefs));
882	break;
883	}
884
885	uint64_t uImageAddr = f64Bit ? uMod.Info64.address : uMod.Info32.address;
886	if (!OSX_VALID_ADDRESS(f64Bit, uImageAddr))
887	{
888	LogRel(("OSXDig: kmod_info @%RGv: Bad address %#llx\n", AddrModInfo.FlatPtr, uImageAddr));
889	break;
890	}
891
892	uint64_t cbImage = f64Bit ? uMod.Info64.size : uMod.Info32.size;
893	if (cbImage > 64U*_1M)
894	{
895	LogRel(("OSXDig: kmod_info @%RGv: Bad size %#llx\n", AddrModInfo.FlatPtr, cbImage));
896	break;
897	}
898
899	uint64_t cbHdr = f64Bit ? uMod.Info64.hdr_size : uMod.Info32.hdr_size;
900	if (cbHdr > 16U*_1M)
901	{
902	LogRel(("OSXDig: kmod_info @%RGv: Bad hdr_size %#llx\n", AddrModInfo.FlatPtr, cbHdr));
903	break;
904	}
905
906	uint64_t uStartAddr = f64Bit ? uMod.Info64.start : uMod.Info32.start;
907	if (!uStartAddr && !OSX_VALID_ADDRESS(f64Bit, uStartAddr))
908	{
909	LogRel(("OSXDig: kmod_info @%RGv: Bad start function %#llx\n", AddrModInfo.FlatPtr, uStartAddr));
910	break;
911	}
912
913	uint64_t uStopAddr = f64Bit ? uMod.Info64.stop : uMod.Info32.stop;
914	if (!uStopAddr && !OSX_VALID_ADDRESS(f64Bit, uStopAddr))
915	{
916	LogRel(("OSXDig: kmod_info @%RGv: Bad stop function %#llx\n", AddrModInfo.FlatPtr, uStopAddr));
917	break;
918	}
919
920	/*
921	* Try add the module.
922	*/
923	LogRel(("OSXDig: kmod_info @%RGv: '%s' ver '%s', image @%#llx LB %#llx cbHdr=%#llx\n", AddrModInfo.FlatPtr,
924	pszName, pszVersion, uImageAddr, cbImage, cbHdr));
925	rc = dbgDiggerDarwinAddModule(pThis, pUVM, uImageAddr, pszName, NULL);
926
927
928	/*
929	* Advance to the next kmod_info entry.
930	*/
931	DBGFR3AddrFromFlat(pUVM, &AddrModInfo, f64Bit ? uMod.Info64.next : uMod.Info32.next);
932	}
933	}
934	else
935	LogRel(("OSXDig: Error reading the 'kmod' variable: %Rrc\n", rc));
936	}
937	else
938	LogRel(("OSXDig: Failed to locate the 'kmod' variable in mach_kernel.\n"));
939
940	pThis->fValid = true;
941	return VINF_SUCCESS;
942	}
943
944	return rc;
945	}
946
947
948	/**
949	* @copydoc DBGFOSREG::pfnProbe
950	*/
951	static DECLCALLBACK(bool) dbgDiggerDarwinProbe(PUVM pUVM, void *pvData)
952	{
953	PDBGDIGGERDARWIN pThis = (PDBGDIGGERDARWIN)pvData;
954
955	/*
956	* Look for a section + segment combo that normally only occures in
957	* mach_kernel. Follow it up with probing of the rest of the executable
958	* header. We must search a largish area because the more recent versions
959	* of darwin have random load address for security raisins.
960	*/
961	static struct { uint64_t uStart, uEnd; } const s_aRanges[] =
962	{
963	/* 64-bit: */
964	{ UINT64_C(0xffffff8000000000), UINT64_C(0xffffff81ffffffff), },
965
966	/* 32-bit - always search for this because of the hybrid 32-bit kernel
967	with cpu in long mode that darwin used for a number of versions. */
968	{ UINT64_C(0x00001000), UINT64_C(0x0ffff000), }
969	};
970	for (unsigned iRange = DBGFR3CpuGetMode(pUVM, 0 /idCpu/) != CPUMMODE_LONG;
971	iRange < RT_ELEMENTS(s_aRanges);
972	iRange++)
973	{
974	DBGFADDRESS KernelAddr;
975	for (DBGFR3AddrFromFlat(pUVM, &KernelAddr, s_aRanges[iRange].uStart);
976	KernelAddr.FlatPtr < s_aRanges[iRange].uEnd;
977	KernelAddr.FlatPtr += X86_PAGE_4K_SIZE)
978	{
979	static const uint8_t s_abNeedle[16 + 16] =
980	{
981	'_','_','t','e','x','t', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* section_32_t::sectname */
982	'_','_','K','L','D', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* section_32_t::segname. */
983	};
984
985	int rc = DBGFR3MemScan(pUVM, 0 /idCpu/, &KernelAddr, s_aRanges[iRange].uEnd - KernelAddr.FlatPtr,
986	1, s_abNeedle, sizeof(s_abNeedle), &KernelAddr);
987	if (RT_FAILURE(rc))
988	break;
989	DBGFR3AddrSub(&KernelAddr, KernelAddr.FlatPtr & X86_PAGE_4K_OFFSET_MASK);
990
991	/*
992	* Read the first page of the image and check the headers.
993	*/
994	union
995	{
996	uint8_t ab[X86_PAGE_4K_SIZE];
997	mach_header_64_t Hdr64;
998	mach_header_32_t Hdr32;
999	} uBuf;
1000	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, &KernelAddr, uBuf.ab, X86_PAGE_4K_SIZE);
1001	if (RT_FAILURE(rc))
1002	continue;
1003	AssertCompileMembersSameSizeAndOffset(mach_header_64_t, magic, mach_header_32_t, magic);
1004	if ( uBuf.Hdr64.magic != IMAGE_MACHO64_SIGNATURE
1005	&& uBuf.Hdr32.magic != IMAGE_MACHO32_SIGNATURE)
1006	continue;
1007	AssertCompileMembersSameSizeAndOffset(mach_header_64_t, cputype, mach_header_32_t, cputype);
1008	bool f64Bit = uBuf.Hdr64.magic == IMAGE_MACHO64_SIGNATURE;
1009	if (uBuf.Hdr32.cputype != (f64Bit ? CPU_TYPE_X86_64 : CPU_TYPE_I386))
1010	continue;
1011	AssertCompileMembersSameSizeAndOffset(mach_header_64_t, filetype, mach_header_32_t, filetype);
1012	if (uBuf.Hdr32.filetype != MH_EXECUTE)
1013	continue;
1014	AssertCompileMembersSameSizeAndOffset(mach_header_64_t, ncmds, mach_header_32_t, ncmds);
1015	if (uBuf.Hdr32.ncmds > 256)
1016	continue;
1017	AssertCompileMembersSameSizeAndOffset(mach_header_64_t, sizeofcmds, mach_header_32_t, sizeofcmds);
1018	if (uBuf.Hdr32.sizeofcmds > X86_PAGE_4K_SIZE * 2 - sizeof(mach_header_64_t))
1019	continue;
1020
1021	/* Seems good enough for now.
1022
1023	If the above causes false positives, check the segments and make
1024	sure there is a kernel version string in the right one. */
1025	pThis->AddrKernel = KernelAddr;
1026	pThis->f64Bit = f64Bit;
1027
1028	/*
1029	* Finally, find the kernel version string.
1030	*/
1031	rc = DBGFR3MemScan(pUVM, 0 /idCpu/, &KernelAddr, 32*_1M, 1, RT_STR_TUPLE("Darwin Kernel Version"),
1032	&pThis->AddrKernelVersion);
1033	if (RT_FAILURE(rc))
1034	DBGFR3AddrFromFlat(pUVM, &pThis->AddrKernelVersion, 0);
1035	return true;
1036	}
1037	}
1038	return false;
1039	}
1040
1041
1042	/**
1043	* @copydoc DBGFOSREG::pfnDestruct
1044	*/
1045	static DECLCALLBACK(void) dbgDiggerDarwinDestruct(PUVM pUVM, void *pvData)
1046	{
1047	RT_NOREF2(pUVM, pvData);
1048
1049	}
1050
1051
1052	/**
1053	* @copydoc DBGFOSREG::pfnConstruct
1054	*/
1055	static DECLCALLBACK(int) dbgDiggerDarwinConstruct(PUVM pUVM, void *pvData)
1056	{
1057	RT_NOREF1(pUVM);
1058	PDBGDIGGERDARWIN pThis = (PDBGDIGGERDARWIN)pvData;
1059
1060	pThis->IDmesg.u32Magic = DBGFOSIDMESG_MAGIC;
1061	pThis->IDmesg.pfnQueryKernelLog = dbgDiggerDarwinIDmsg_QueryKernelLog;
1062	pThis->IDmesg.u32EndMagic = DBGFOSIDMESG_MAGIC;
1063
1064	return VINF_SUCCESS;
1065	}
1066
1067
1068	const DBGFOSREG g_DBGDiggerDarwin =
1069	{
1070	/* .u32Magic = */ DBGFOSREG_MAGIC,
1071	/* .fFlags = */ 0,
1072	/* .cbData = */ sizeof(DBGDIGGERDARWIN),
1073	/* .szName = */ "Darwin",
1074	/* .pfnConstruct = */ dbgDiggerDarwinConstruct,
1075	/* .pfnDestruct = */ dbgDiggerDarwinDestruct,
1076	/* .pfnProbe = */ dbgDiggerDarwinProbe,
1077	/* .pfnInit = */ dbgDiggerDarwinInit,
1078	/* .pfnRefresh = */ dbgDiggerDarwinRefresh,
1079	/* .pfnTerm = */ dbgDiggerDarwinTerm,
1080	/* .pfnQueryVersion = */ dbgDiggerDarwinQueryVersion,
1081	/* .pfnQueryInterface = */ dbgDiggerDarwinQueryInterface,
1082	/* .pfnStackUnwindAssist = */ dbgDiggerDarwinStackUnwindAssist,
1083	/* .u32EndMagic = */ DBGFOSREG_MAGIC
1084	};
1085

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source: vbox/trunk/src/VBox/Debugger/DBGPlugInDarwin.cpp@ 83083

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