dbgkrnlinfo-r0drv-darwin.cpp@ 75039

Last change on this file since 75039 was 75039, checked in by vboxsync, 6 years ago
IPRT/r0drv/darwin: Split out RTFile* from dbgkrnlinfo. Added RTFileRead and RTFileGetSize. bugref:9232
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1	/* $Id: dbgkrnlinfo-r0drv-darwin.cpp 75039 2018-10-24 13:47:40Z vboxsync $ */
2	/** @file
3	* IPRT - Kernel Debug Information, R0 Driver, Darwin.
4	*/
5
6	/*
7	* Copyright (C) 2011-2017 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	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#ifdef IN_RING0
32	# include "the-darwin-kernel.h"
33	# include <sys/kauth.h>
34	RT_C_DECLS_BEGIN /* Buggy 10.4 headers, fixed in 10.5. */
35	# include <sys/kpi_mbuf.h>
36	# include <net/kpi_interfacefilter.h>
37	# include <sys/kpi_socket.h>
38	# include <sys/kpi_socketfilter.h>
39	RT_C_DECLS_END
40	# include <sys/buf.h>
41	# include <sys/vm.h>
42	# include <sys/vnode_if.h>
43	/# include <sys/sysctl.h>/
44	# include <sys/systm.h>
45	# include <vfs/vfs_support.h>
46	/# include <miscfs/specfs/specdev.h>/
47	#else
48	# include <stdio.h> /* for printf */
49	#endif
50
51	#if !defined(IN_RING0) && !defined(DOXYGEN_RUNNING) /* A linking tweak for the testcase: */
52	# include <iprt/cdefs.h>
53	# undef RTR0DECL
54	# define RTR0DECL(type) DECLHIDDEN(type) RTCALL
55	#endif
56
57	#include "internal/iprt.h"
58	#include <iprt/dbg.h>
59
60	#include <iprt/asm.h>
61	#include <iprt/assert.h>
62	#include <iprt/err.h>
63	#include <iprt/assert.h>
64	#include <iprt/file.h>
65	#include <iprt/log.h>
66	#include <iprt/mem.h>
67	#include <iprt/string.h>
68	#include <iprt/formats/mach-o.h>
69	#include "internal/magics.h"
70
71	/** @def MY_CPU_TYPE
72	* The CPU type targeted by the compiler. */
73	/** @def MY_CPU_TYPE
74	* The "ALL" CPU subtype targeted by the compiler. */
75	/** @def MY_MACHO_HEADER
76	* The Mach-O header targeted by the compiler. */
77	/** @def MY_MACHO_MAGIC
78	* The Mach-O header magic we're targeting. */
79	/** @def MY_SEGMENT_COMMAND
80	* The segment command targeted by the compiler. */
81	/** @def MY_SECTION
82	* The section struture targeted by the compiler. */
83	/** @def MY_NLIST
84	* The symbol table entry targeted by the compiler. */
85	#ifdef RT_ARCH_X86
86	# define MY_CPU_TYPE CPU_TYPE_I386
87	# define MY_CPU_SUBTYPE_ALL CPU_SUBTYPE_I386_ALL
88	# define MY_MACHO_HEADER mach_header_32_t
89	# define MY_MACHO_MAGIC IMAGE_MACHO32_SIGNATURE
90	# define MY_SEGMENT_COMMAND segment_command_32_t
91	# define MY_SECTION section_32_t
92	# define MY_NLIST macho_nlist_32_t
93
94	#elif defined(RT_ARCH_AMD64)
95	# define MY_CPU_TYPE CPU_TYPE_X86_64
96	# define MY_CPU_SUBTYPE_ALL CPU_SUBTYPE_X86_64_ALL
97	# define MY_MACHO_HEADER mach_header_64_t
98	# define MY_MACHO_MAGIC IMAGE_MACHO64_SIGNATURE
99	# define MY_SEGMENT_COMMAND segment_command_64_t
100	# define MY_SECTION section_64_t
101	# define MY_NLIST macho_nlist_64_t
102
103	#else
104	# error "Port me!"
105	#endif
106
107	/** @name Return macros for make it simpler to track down too paranoid code.
108	* @{
109	*/
110	#ifdef DEBUG
111	# define RETURN_VERR_BAD_EXE_FORMAT \
112	do { Assert(!g_fBreakpointOnError); return VERR_BAD_EXE_FORMAT; } while (0)
113	# define RETURN_VERR_LDR_UNEXPECTED \
114	do { Assert(!g_fBreakpointOnError); return VERR_LDR_UNEXPECTED; } while (0)
115	# define RETURN_VERR_LDR_ARCH_MISMATCH \
116	do { Assert(!g_fBreakpointOnError); return VERR_LDR_ARCH_MISMATCH; } while (0)
117	#else
118	# define RETURN_VERR_BAD_EXE_FORMAT do { return VERR_BAD_EXE_FORMAT; } while (0)
119	# define RETURN_VERR_LDR_UNEXPECTED do { return VERR_LDR_UNEXPECTED; } while (0)
120	# define RETURN_VERR_LDR_ARCH_MISMATCH do { return VERR_LDR_ARCH_MISMATCH; } while (0)
121	#endif
122	/** @} */
123
124	#define VERR_LDR_UNEXPECTED (-641)
125
126	#ifndef RT_OS_DARWIN
127	# define MAC_OS_X_VERSION_MIN_REQUIRED 1050
128	#endif
129
130
131	/*********************************************************************************************************************************
132	* Structures and Typedefs *
133	*********************************************************************************************************************************/
134	/**
135	* Our internal representation of the mach_kernel after loading it's symbols
136	* and successfully resolving their addresses.
137	*/
138	typedef struct RTDBGKRNLINFOINT
139	{
140	/** Magic value (RTDBGKRNLINFO_MAGIC). */
141	uint32_t u32Magic;
142	/** Reference counter. */
143	uint32_t volatile cRefs;
144
145	/** @name Result.
146	* @{ */
147	/** Pointer to the string table. */
148	char *pachStrTab;
149	/** The size of the string table. */
150	uint32_t cbStrTab;
151	/** The file offset of the string table. */
152	uint32_t offStrTab;
153	/** Pointer to the symbol table. */
154	MY_NLIST *paSyms;
155	/** The size of the symbol table. */
156	uint32_t cSyms;
157	/** The file offset of the symbol table. */
158	uint32_t offSyms;
159	/** Offset between link address and actual load address. */
160	uintptr_t offLoad;
161	/** @} */
162
163	/** @name Used during loading.
164	* @{ */
165	/** The file handle. */
166	RTFILE hFile;
167	/** The architecture image offset (fat_arch_t::offset). */
168	uint64_t offArch;
169	/** The architecture image size (fat_arch_t::size). */
170	uint32_t cbArch;
171	/** The number of load commands (mach_header_XX_t::ncmds). */
172	uint32_t cLoadCmds;
173	/** The size of the load commands. */
174	uint32_t cbLoadCmds;
175	/** The load commands. */
176	load_command_t *pLoadCmds;
177	/** Section pointer table (points into the load commands). */
178	MY_SECTION const *apSections[MACHO_MAX_SECT];
179	/** The number of sections. */
180	uint32_t cSections;
181	/** @} */
182
183	/** Buffer space. */
184	char abBuf[_4K];
185	} RTDBGKRNLINFOINT;
186
187
188	/*********************************************************************************************************************************
189	* Structures and Typedefs *
190	*********************************************************************************************************************************/
191	#ifdef DEBUG
192	static bool g_fBreakpointOnError = false;
193	#endif
194
195
196	/**
197	* Close and free up resources we no longer needs.
198	*
199	* @param pThis The internal scratch data.
200	*/
201	static void rtR0DbgKrnlDarwinLoadDone(RTDBGKRNLINFOINT *pThis)
202	{
203	RTFileClose(pThis->hFile);
204	pThis->hFile = NIL_RTFILE;
205
206	RTMemFree(pThis->pLoadCmds);
207	pThis->pLoadCmds = NULL;
208	memset((void )&pThis->apSections[0], 0, sizeof(pThis->apSections[0]) MACHO_MAX_SECT);
209	}
210
211
212	/**
213	* Looks up a kernel symbol.
214	*
215	* @returns The symbol address on success, 0 on failure.
216	* @param pThis The internal scratch data.
217	* @param pszSymbol The symbol to resolve. Automatically prefixed
218	* with an underscore.
219	*/
220	static uintptr_t rtR0DbgKrnlDarwinLookup(RTDBGKRNLINFOINT pThis, const char pszSymbol)
221	{
222	uint32_t const cSyms = pThis->cSyms;
223	MY_NLIST const *pSym = pThis->paSyms;
224
225	#if 1
226	/* linear search. */
227	for (uint32_t iSym = 0; iSym < cSyms; iSym++, pSym++)
228	{
229	if (pSym->n_type & MACHO_N_STAB)
230	continue;
231
232	const char *pszTabName= &pThis->pachStrTab[(uint32_t)pSym->n_un.n_strx];
233	if ( *pszTabName == '_'
234	&& strcmp(pszTabName + 1, pszSymbol) == 0)
235	return pSym->n_value + pThis->offLoad;
236	}
237	#else
238	/** @todo binary search. */
239
240	#endif
241	return 0;
242	}
243
244
245	/* Rainy day: Find the right headers for these symbols ... if there are any. */
246	extern "C" void ev_try_lock(void);
247	extern "C" void OSMalloc(void);
248	extern "C" void OSlibkernInit(void);
249	extern "C" void kdp_set_interface(void);
250
251
252	/**
253	* Check the symbol table against symbols we known symbols.
254	*
255	* This is done to detect whether the on disk image and the in
256	* memory images matches. Mismatches could stem from user
257	* replacing the default kernel image on disk.
258	*
259	* @returns IPRT status code.
260	* @param pThis The internal scratch data.
261	*/
262	static int rtR0DbgKrnlDarwinCheckStandardSymbols(RTDBGKRNLINFOINT *pThis)
263	{
264	static struct
265	{
266	const char *pszName;
267	uintptr_t uAddr;
268	} const s_aStandardCandles[] =
269	{
270	#ifdef IN_RING0
271	# define KNOWN_ENTRY(a_Sym) { #a_Sym, (uintptr_t)&a_Sym }
272	#else
273	# define KNOWN_ENTRY(a_Sym) { #a_Sym, 0 }
274	#endif
275	/* IOKit: */
276	KNOWN_ENTRY(IOMalloc),
277	KNOWN_ENTRY(IOFree),
278	KNOWN_ENTRY(IOSleep),
279	KNOWN_ENTRY(IORWLockAlloc),
280	KNOWN_ENTRY(IORecursiveLockLock),
281	KNOWN_ENTRY(IOSimpleLockAlloc),
282	KNOWN_ENTRY(PE_cpu_halt),
283	KNOWN_ENTRY(gIOKitDebug),
284	KNOWN_ENTRY(gIOServicePlane),
285	KNOWN_ENTRY(ev_try_lock),
286
287	/* Libkern: */
288	KNOWN_ENTRY(OSAddAtomic),
289	KNOWN_ENTRY(OSBitAndAtomic),
290	KNOWN_ENTRY(OSBitOrAtomic),
291	KNOWN_ENTRY(OSBitXorAtomic),
292	KNOWN_ENTRY(OSCompareAndSwap),
293	KNOWN_ENTRY(OSMalloc),
294	KNOWN_ENTRY(OSlibkernInit),
295	KNOWN_ENTRY(bcmp),
296	KNOWN_ENTRY(copyout),
297	KNOWN_ENTRY(copyin),
298	KNOWN_ENTRY(kprintf),
299	KNOWN_ENTRY(printf),
300	KNOWN_ENTRY(lck_grp_alloc_init),
301	KNOWN_ENTRY(lck_mtx_alloc_init),
302	KNOWN_ENTRY(lck_rw_alloc_init),
303	KNOWN_ENTRY(lck_spin_alloc_init),
304	KNOWN_ENTRY(osrelease),
305	KNOWN_ENTRY(ostype),
306	KNOWN_ENTRY(panic),
307	KNOWN_ENTRY(strprefix),
308	//KNOWN_ENTRY(sysctlbyname), - we get kernel_sysctlbyname from the 10.10+ kernels.
309	KNOWN_ENTRY(vsscanf),
310	KNOWN_ENTRY(page_mask),
311
312	/* Mach: */
313	KNOWN_ENTRY(absolutetime_to_nanoseconds),
314	KNOWN_ENTRY(assert_wait),
315	KNOWN_ENTRY(clock_delay_until),
316	KNOWN_ENTRY(clock_get_uptime),
317	KNOWN_ENTRY(current_task),
318	KNOWN_ENTRY(current_thread),
319	KNOWN_ENTRY(kernel_task),
320	KNOWN_ENTRY(lck_mtx_sleep),
321	KNOWN_ENTRY(lck_rw_sleep),
322	KNOWN_ENTRY(lck_spin_sleep),
323	KNOWN_ENTRY(mach_absolute_time),
324	KNOWN_ENTRY(semaphore_create),
325	KNOWN_ENTRY(task_reference),
326	KNOWN_ENTRY(thread_block),
327	KNOWN_ENTRY(thread_reference),
328	KNOWN_ENTRY(thread_terminate),
329	KNOWN_ENTRY(thread_wakeup_prim),
330
331	/* BSDKernel: */
332	KNOWN_ENTRY(buf_size),
333	KNOWN_ENTRY(copystr),
334	KNOWN_ENTRY(current_proc),
335	KNOWN_ENTRY(ifnet_hdrlen),
336	KNOWN_ENTRY(ifnet_set_promiscuous),
337	KNOWN_ENTRY(kauth_getuid),
338	#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
339	KNOWN_ENTRY(kauth_cred_unref),
340	#else
341	KNOWN_ENTRY(kauth_cred_rele),
342	#endif
343	KNOWN_ENTRY(mbuf_data),
344	KNOWN_ENTRY(msleep),
345	KNOWN_ENTRY(nanotime),
346	KNOWN_ENTRY(nop_close),
347	KNOWN_ENTRY(proc_pid),
348	KNOWN_ENTRY(sock_accept),
349	KNOWN_ENTRY(sockopt_name),
350	//KNOWN_ENTRY(spec_write),
351	KNOWN_ENTRY(suword),
352	//KNOWN_ENTRY(sysctl_int),
353	KNOWN_ENTRY(uio_rw),
354	KNOWN_ENTRY(vfs_flags),
355	KNOWN_ENTRY(vfs_name),
356	KNOWN_ENTRY(vfs_statfs),
357	KNOWN_ENTRY(VNOP_READ),
358	KNOWN_ENTRY(uio_create),
359	KNOWN_ENTRY(uio_addiov),
360	KNOWN_ENTRY(uio_free),
361	KNOWN_ENTRY(vnode_get),
362	KNOWN_ENTRY(vnode_open),
363	KNOWN_ENTRY(vnode_ref),
364	KNOWN_ENTRY(vnode_rele),
365	KNOWN_ENTRY(vnop_close_desc),
366	KNOWN_ENTRY(wakeup),
367	KNOWN_ENTRY(wakeup_one),
368
369	/* Unsupported: */
370	KNOWN_ENTRY(kdp_set_interface),
371	KNOWN_ENTRY(pmap_find_phys),
372	KNOWN_ENTRY(vm_map),
373	KNOWN_ENTRY(vm_protect),
374	KNOWN_ENTRY(vm_region),
375	KNOWN_ENTRY(vm_map_unwire), /* vm_map_wire has an alternative symbol, vm_map_wire_external, in 10.11 */
376	KNOWN_ENTRY(PE_kputc),
377	KNOWN_ENTRY(kernel_map),
378	KNOWN_ENTRY(kernel_pmap),
379	};
380
381	for (unsigned i = 0; i < RT_ELEMENTS(s_aStandardCandles); i++)
382	{
383	uintptr_t uAddr = rtR0DbgKrnlDarwinLookup(pThis, s_aStandardCandles[i].pszName);
384	#ifdef IN_RING0
385	if (uAddr != s_aStandardCandles[i].uAddr)
386	#else
387	if (uAddr == 0)
388	#endif
389	{
390	AssertLogRelMsgFailed(("%s (%p != %p)\n", s_aStandardCandles[i].pszName, uAddr, s_aStandardCandles[i].uAddr));
391	return VERR_INTERNAL_ERROR_2;
392	}
393	}
394	return VINF_SUCCESS;
395	}
396
397
398	/**
399	* Loads and validates the symbol and string tables.
400	*
401	* @returns IPRT status code.
402	* @param pThis The internal scratch data.
403	* @param pszKernelFile The name of the kernel file.
404	*/
405	static int rtR0DbgKrnlDarwinLoadSymTab(RTDBGKRNLINFOINT pThis, const char pszKernelFile)
406	{
407	/*
408	* Load the tables.
409	*/
410	pThis->paSyms = (MY_NLIST )RTMemAllocZ(pThis->cSyms sizeof(MY_NLIST));
411	if (!pThis->paSyms)
412	return VERR_NO_MEMORY;
413
414	int rc = RTFileReadAt(pThis->hFile, pThis->offArch + pThis->offSyms,
415	pThis->paSyms, pThis->cSyms * sizeof(MY_NLIST), NULL);
416	if (RT_FAILURE(rc))
417	return rc;
418
419	pThis->pachStrTab = (char *)RTMemAllocZ(pThis->cbStrTab + 1);
420	if (!pThis->pachStrTab)
421	return VERR_NO_MEMORY;
422
423	rc = RTFileReadAt(pThis->hFile, pThis->offArch + pThis->offStrTab,
424	pThis->pachStrTab, pThis->cbStrTab, NULL);
425	if (RT_FAILURE(rc))
426	return rc;
427
428	/*
429	* The first string table symbol must be a zero length name.
430	*/
431	if (pThis->pachStrTab[0] != '\0')
432	RETURN_VERR_BAD_EXE_FORMAT;
433
434	/*
435	* Validate the symbol table.
436	*/
437	const char *pszPrev = "";
438	uint32_t const cSyms = pThis->cSyms;
439	MY_NLIST const *pSym = pThis->paSyms;
440	for (uint32_t iSym = 0; iSym < cSyms; iSym++, pSym++)
441	{
442	if ((uint32_t)pSym->n_un.n_strx >= pThis->cbStrTab)
443	{
444	printf("RTR0DbgKrnlInfoOpen: %s: Symbol #%u has a bad string table index: %#x vs cbStrTab=%#x\n",
445	pszKernelFile, iSym, pSym->n_un.n_strx, pThis->cbStrTab);
446	RETURN_VERR_BAD_EXE_FORMAT;
447	}
448	const char *pszSym = &pThis->pachStrTab[(uint32_t)pSym->n_un.n_strx];
449	#ifdef IN_RING3
450	RTAssertMsg2("%05i: %02x:%08llx %02x %04x %s\n", iSym, pSym->n_sect, (uint64_t)pSym->n_value, pSym->n_type, pSym->n_desc, pszSym);
451	#endif
452
453	if (strcmp(pszSym, pszPrev) < 0)
454	RETURN_VERR_BAD_EXE_FORMAT; /* not sorted */
455
456	if (!(pSym->n_type & MACHO_N_STAB))
457	{
458	switch (pSym->n_type & MACHO_N_TYPE)
459	{
460	case MACHO_N_SECT:
461	if (pSym->n_sect == MACHO_NO_SECT)
462	{
463	printf("RTR0DbgKrnlInfoOpen: %s: Symbol #%u '%s' problem: n_sect = MACHO_NO_SECT\n",
464	pszKernelFile, iSym, pszSym);
465	RETURN_VERR_BAD_EXE_FORMAT;
466	}
467	if (pSym->n_sect > pThis->cSections)
468	{
469	printf("RTR0DbgKrnlInfoOpen: %s: Symbol #%u '%s' problem: n_sect (%u) is higher than cSections (%u)\n",
470	pszKernelFile, iSym, pszSym, pSym->n_sect, pThis->cSections);
471	RETURN_VERR_BAD_EXE_FORMAT;
472	}
473	if (pSym->n_desc & ~(REFERENCED_DYNAMICALLY \| N_WEAK_DEF))
474	{
475	printf("RTR0DbgKrnlInfoOpen: %s: Symbol #%u '%s' problem: Unexpected value n_desc=%#x\n",
476	pszKernelFile, iSym, pszSym, pSym->n_desc);
477	RETURN_VERR_BAD_EXE_FORMAT;
478	}
479	if ( pSym->n_value < pThis->apSections[pSym->n_sect - 1]->addr
480	&& strcmp(pszSym, "__mh_execute_header")) /* in 10.8 it's no longer absolute (PIE?). */
481	{
482	printf("RTR0DbgKrnlInfoOpen: %s: Symbol #%u '%s' problem: n_value (%#llx) < section addr (%#llx)\n",
483	pszKernelFile, iSym, pszSym, pSym->n_value, pThis->apSections[pSym->n_sect - 1]->addr);
484	RETURN_VERR_BAD_EXE_FORMAT;
485	}
486	if ( pSym->n_value - pThis->apSections[pSym->n_sect - 1]->addr
487	> pThis->apSections[pSym->n_sect - 1]->size
488	&& strcmp(pszSym, "__mh_execute_header")) /* see above. */
489	{
490	printf("RTR0DbgKrnlInfoOpen: %s: Symbol #%u '%s' problem: n_value (%#llx) >= end of section (%#llx + %#llx)\n",
491	pszKernelFile, iSym, pszSym, pSym->n_value, pThis->apSections[pSym->n_sect - 1]->addr,
492	pThis->apSections[pSym->n_sect - 1]->size);
493	RETURN_VERR_BAD_EXE_FORMAT;
494	}
495	break;
496
497	case MACHO_N_ABS:
498	if ( pSym->n_sect != MACHO_NO_SECT
499	&& ( strcmp(pszSym, "__mh_execute_header") /* n_sect=1 in 10.7/amd64 */
500	\|\| pSym->n_sect > pThis->cSections) )
501	{
502	printf("RTR0DbgKrnlInfoOpen: %s: Abs symbol #%u '%s' problem: n_sect (%u) is not MACHO_NO_SECT (cSections is %u)\n",
503	pszKernelFile, iSym, pszSym, pSym->n_sect, pThis->cSections);
504	RETURN_VERR_BAD_EXE_FORMAT;
505	}
506	if (pSym->n_desc & ~(REFERENCED_DYNAMICALLY \| N_WEAK_DEF))
507	{
508	printf("RTR0DbgKrnlInfoOpen: %s: Abs symbol #%u '%s' problem: Unexpected value n_desc=%#x\n",
509	pszKernelFile, iSym, pszSym, pSym->n_desc);
510	RETURN_VERR_BAD_EXE_FORMAT;
511	}
512	break;
513
514	case MACHO_N_UNDF:
515	/* No undefined or common symbols in the kernel. */
516	printf("RTR0DbgKrnlInfoOpen: %s: Unexpected undefined symbol #%u '%s'\n", pszKernelFile, iSym, pszSym);
517	RETURN_VERR_BAD_EXE_FORMAT;
518
519	case MACHO_N_INDR:
520	/* No indirect symbols in the kernel. */
521	printf("RTR0DbgKrnlInfoOpen: %s: Unexpected indirect symbol #%u '%s'\n", pszKernelFile, iSym, pszSym);
522	RETURN_VERR_BAD_EXE_FORMAT;
523
524	case MACHO_N_PBUD:
525	/* No prebound symbols in the kernel. */
526	printf("RTR0DbgKrnlInfoOpen: %s: Unexpected prebound symbol #%u '%s'\n", pszKernelFile, iSym, pszSym);
527	RETURN_VERR_BAD_EXE_FORMAT;
528
529	default:
530	printf("RTR0DbgKrnlInfoOpen: %s: Unexpected symbol n_type %#x for symbol #%u '%s'\n",
531	pszKernelFile, pSym->n_type, iSym, pszSym);
532	RETURN_VERR_BAD_EXE_FORMAT;
533	}
534	}
535	/* else: Ignore debug symbols. */
536	}
537
538	return VINF_SUCCESS;
539	}
540
541
542	/**
543	* Loads the load commands and validates them.
544	*
545	* @returns IPRT status code.
546	* @param pThis The internal scratch data.
547	*/
548	static int rtR0DbgKrnlDarwinLoadCommands(RTDBGKRNLINFOINT *pThis)
549	{
550	pThis->offStrTab = 0;
551	pThis->cbStrTab = 0;
552	pThis->offSyms = 0;
553	pThis->cSyms = 0;
554	pThis->cSections = 0;
555
556	pThis->pLoadCmds = (load_command_t *)RTMemAlloc(pThis->cbLoadCmds);
557	if (!pThis->pLoadCmds)
558	return VERR_NO_MEMORY;
559
560	int rc = RTFileReadAt(pThis->hFile, pThis->offArch + sizeof(MY_MACHO_HEADER),
561	pThis->pLoadCmds, pThis->cbLoadCmds, NULL);
562	if (RT_FAILURE(rc))
563	return rc;
564
565	/*
566	* Validate the relevant commands, picking up sections and the symbol
567	* table location.
568	*/
569	load_command_t const *pCmd = pThis->pLoadCmds;
570	for (uint32_t iCmd = 0; ; iCmd++)
571	{
572	/* cmd index & offset. */
573	uintptr_t offCmd = (uintptr_t)pCmd - (uintptr_t)pThis->pLoadCmds;
574	if (offCmd == pThis->cbLoadCmds && iCmd == pThis->cLoadCmds)
575	break;
576	if (offCmd + sizeof(*pCmd) > pThis->cbLoadCmds)
577	RETURN_VERR_BAD_EXE_FORMAT;
578	if (iCmd >= pThis->cLoadCmds)
579	RETURN_VERR_BAD_EXE_FORMAT;
580
581	/* cmdsize */
582	if (pCmd->cmdsize < sizeof(*pCmd))
583	RETURN_VERR_BAD_EXE_FORMAT;
584	if (pCmd->cmdsize > pThis->cbLoadCmds)
585	RETURN_VERR_BAD_EXE_FORMAT;
586	if (RT_ALIGN_32(pCmd->cmdsize, 4) != pCmd->cmdsize)
587	RETURN_VERR_BAD_EXE_FORMAT;
588
589	/* cmd */
590	switch (pCmd->cmd & ~LC_REQ_DYLD)
591	{
592	/* Validate and store the symbol table details. */
593	case LC_SYMTAB:
594	{
595	struct symtab_command const pSymTab = (struct symtab_command const )pCmd;
596	if (pSymTab->cmdsize != sizeof(*pSymTab))
597	RETURN_VERR_BAD_EXE_FORMAT;
598	if (pSymTab->nsyms > _1M)
599	RETURN_VERR_BAD_EXE_FORMAT;
600	if (pSymTab->strsize > _2M)
601	RETURN_VERR_BAD_EXE_FORMAT;
602
603	pThis->offStrTab = pSymTab->stroff;
604	pThis->cbStrTab = pSymTab->strsize;
605	pThis->offSyms = pSymTab->symoff;
606	pThis->cSyms = pSymTab->nsyms;
607	break;
608	}
609
610	/* Validate the segment. */
611	#if ARCH_BITS == 32
612	case LC_SEGMENT_32:
613	#elif ARCH_BITS == 64
614	case LC_SEGMENT_64:
615	#else
616	# error ARCH_BITS
617	#endif
618	{
619	MY_SEGMENT_COMMAND const pSeg = (MY_SEGMENT_COMMAND const )pCmd;
620	if (pSeg->cmdsize < sizeof(*pSeg))
621	RETURN_VERR_BAD_EXE_FORMAT;
622
623	if (pSeg->segname[0] == '\0')
624	RETURN_VERR_BAD_EXE_FORMAT;
625
626	if (pSeg->nsects > MACHO_MAX_SECT)
627	RETURN_VERR_BAD_EXE_FORMAT;
628	if (pSeg->nsects * sizeof(MY_SECTION) + sizeof(*pSeg) != pSeg->cmdsize)
629	RETURN_VERR_BAD_EXE_FORMAT;
630
631	if (pSeg->flags & ~(SG_HIGHVM \| SG_FVMLIB \| SG_NORELOC \| SG_PROTECTED_VERSION_1))
632	RETURN_VERR_BAD_EXE_FORMAT;
633
634	if ( pSeg->vmaddr != 0
635	\|\| !strcmp(pSeg->segname, "__PAGEZERO"))
636	{
637	if (pSeg->vmaddr + RT_ALIGN_Z(pSeg->vmsize, RT_BIT_32(12)) < pSeg->vmaddr)
638	RETURN_VERR_BAD_EXE_FORMAT;
639	}
640	else if (pSeg->vmsize)
641	RETURN_VERR_BAD_EXE_FORMAT;
642
643	if (pSeg->maxprot & ~VM_PROT_ALL)
644	RETURN_VERR_BAD_EXE_FORMAT;
645	if (pSeg->initprot & ~VM_PROT_ALL)
646	RETURN_VERR_BAD_EXE_FORMAT;
647
648	/* Validate the sections. */
649	uint32_t uAlignment = 0;
650	MY_SECTION const paSects = (MY_SECTION const )(pSeg + 1);
651	for (uint32_t i = 0; i < pSeg->nsects; i++)
652	{
653	if (paSects[i].sectname[0] == '\0')
654	RETURN_VERR_BAD_EXE_FORMAT;
655	if (memcmp(paSects[i].segname, pSeg->segname, sizeof(pSeg->segname)))
656	RETURN_VERR_BAD_EXE_FORMAT;
657
658	switch (paSects[i].flags & SECTION_TYPE)
659	{
660	case S_REGULAR:
661	case S_CSTRING_LITERALS:
662	case S_NON_LAZY_SYMBOL_POINTERS:
663	case S_MOD_INIT_FUNC_POINTERS:
664	case S_MOD_TERM_FUNC_POINTERS:
665	case S_COALESCED:
666	case S_4BYTE_LITERALS:
667	if ( pSeg->filesize != 0
668	? paSects[i].offset - pSeg->fileoff >= pSeg->filesize
669	: paSects[i].offset - pSeg->fileoff != pSeg->filesize)
670	RETURN_VERR_BAD_EXE_FORMAT;
671	if ( paSects[i].addr != 0
672	&& paSects[i].offset - pSeg->fileoff != paSects[i].addr - pSeg->vmaddr)
673	RETURN_VERR_BAD_EXE_FORMAT;
674	break;
675
676	case S_ZEROFILL:
677	if (paSects[i].offset != 0)
678	RETURN_VERR_BAD_EXE_FORMAT;
679	break;
680
681	/* not observed */
682	case S_SYMBOL_STUBS:
683	case S_INTERPOSING:
684	case S_8BYTE_LITERALS:
685	case S_16BYTE_LITERALS:
686	case S_DTRACE_DOF:
687	case S_LAZY_SYMBOL_POINTERS:
688	case S_LAZY_DYLIB_SYMBOL_POINTERS:
689	RETURN_VERR_LDR_UNEXPECTED;
690	case S_GB_ZEROFILL:
691	RETURN_VERR_LDR_UNEXPECTED;
692	default:
693	RETURN_VERR_BAD_EXE_FORMAT;
694	}
695
696	if (paSects[i].align > 12)
697	RETURN_VERR_BAD_EXE_FORMAT;
698	if (paSects[i].align > uAlignment)
699	uAlignment = paSects[i].align;
700
701	/* Add to the section table. */
702	if (pThis->cSections == MACHO_MAX_SECT)
703	RETURN_VERR_BAD_EXE_FORMAT;
704	pThis->apSections[pThis->cSections++] = &paSects[i];
705	}
706
707	if (RT_ALIGN_Z(pSeg->vmaddr, RT_BIT_32(uAlignment)) != pSeg->vmaddr)
708	RETURN_VERR_BAD_EXE_FORMAT;
709	if ( pSeg->filesize > RT_ALIGN_Z(pSeg->vmsize, RT_BIT_32(uAlignment))
710	&& pSeg->vmsize != 0)
711	RETURN_VERR_BAD_EXE_FORMAT;
712	break;
713	}
714
715	case LC_UUID:
716	if (pCmd->cmdsize != sizeof(uuid_command))
717	RETURN_VERR_BAD_EXE_FORMAT;
718	break;
719
720	case LC_DYSYMTAB:
721	case LC_UNIXTHREAD:
722	case LC_CODE_SIGNATURE:
723	case LC_VERSION_MIN_MACOSX:
724	case LC_FUNCTION_STARTS:
725	case LC_MAIN:
726	case LC_DATA_IN_CODE:
727	case LC_SOURCE_VERSION:
728	case LC_ENCRYPTION_INFO_64:
729	case LC_LINKER_OPTION:
730	case LC_LINKER_OPTIMIZATION_HINT:
731	case LC_VERSION_MIN_TVOS:
732	case LC_VERSION_MIN_WATCHOS:
733	case LC_NOTE:
734	case LC_BUILD_VERSION:
735	break;
736
737	/* not observed */
738	case LC_SYMSEG:
739	#if ARCH_BITS == 32
740	case LC_SEGMENT_64:
741	#elif ARCH_BITS == 64
742	case LC_SEGMENT_32:
743	#endif
744	case LC_ROUTINES_64:
745	case LC_ROUTINES:
746	case LC_THREAD:
747	case LC_LOADFVMLIB:
748	case LC_IDFVMLIB:
749	case LC_IDENT:
750	case LC_FVMFILE:
751	case LC_PREPAGE:
752	case LC_TWOLEVEL_HINTS:
753	case LC_PREBIND_CKSUM:
754	case LC_SEGMENT_SPLIT_INFO:
755	case LC_ENCRYPTION_INFO:
756	RETURN_VERR_LDR_UNEXPECTED;
757
758	/* no phones here yet */
759	case LC_VERSION_MIN_IPHONEOS:
760	RETURN_VERR_LDR_UNEXPECTED;
761
762	/* dylib */
763	case LC_LOAD_DYLIB:
764	case LC_ID_DYLIB:
765	case LC_LOAD_DYLINKER:
766	case LC_ID_DYLINKER:
767	case LC_PREBOUND_DYLIB:
768	case LC_LOAD_WEAK_DYLIB & ~LC_REQ_DYLD:
769	case LC_SUB_FRAMEWORK:
770	case LC_SUB_UMBRELLA:
771	case LC_SUB_CLIENT:
772	case LC_SUB_LIBRARY:
773	case LC_RPATH:
774	case LC_REEXPORT_DYLIB:
775	case LC_LAZY_LOAD_DYLIB:
776	case LC_DYLD_INFO:
777	case LC_DYLD_INFO_ONLY:
778	case LC_LOAD_UPWARD_DYLIB:
779	case LC_DYLD_ENVIRONMENT:
780	case LC_DYLIB_CODE_SIGN_DRS:
781	RETURN_VERR_LDR_UNEXPECTED;
782
783	default:
784	RETURN_VERR_BAD_EXE_FORMAT;
785	}
786
787	/* next */
788	pCmd = (load_command_t *)((uintptr_t)pCmd + pCmd->cmdsize);
789	}
790
791	return VINF_SUCCESS;
792	}
793
794
795	/**
796	* Loads the FAT and MACHO headers, noting down the relevant info.
797	*
798	* @returns IPRT status code.
799	* @param pThis The internal scratch data.
800	*/
801	static int rtR0DbgKrnlDarwinLoadFileHeaders(RTDBGKRNLINFOINT *pThis)
802	{
803	uint32_t i;
804
805	pThis->offArch = 0;
806	pThis->cbArch = 0;
807
808	/*
809	* Read the first bit of the file, parse the FAT if found there.
810	*/
811	int rc = RTFileReadAt(pThis->hFile, 0, pThis->abBuf, sizeof(fat_header_t) + sizeof(fat_arch_t) * 16, NULL);
812	if (RT_FAILURE(rc))
813	return rc;
814
815	fat_header_t pFat = (fat_header )pThis->abBuf;
816	fat_arch_t paFatArches = (fat_arch_t )(pFat + 1);
817
818	/* Correct FAT endian first. */
819	if (pFat->magic == IMAGE_FAT_SIGNATURE_OE)
820	{
821	pFat->magic = RT_BSWAP_U32(pFat->magic);
822	pFat->nfat_arch = RT_BSWAP_U32(pFat->nfat_arch);
823	i = RT_MIN(pFat->nfat_arch, 16);
824	while (i-- > 0)
825	{
826	paFatArches[i].cputype = RT_BSWAP_U32(paFatArches[i].cputype);
827	paFatArches[i].cpusubtype = RT_BSWAP_U32(paFatArches[i].cpusubtype);
828	paFatArches[i].offset = RT_BSWAP_U32(paFatArches[i].offset);
829	paFatArches[i].size = RT_BSWAP_U32(paFatArches[i].size);
830	paFatArches[i].align = RT_BSWAP_U32(paFatArches[i].align);
831	}
832	}
833
834	/* Lookup our architecture in the FAT. */
835	if (pFat->magic == IMAGE_FAT_SIGNATURE)
836	{
837	if (pFat->nfat_arch > 16)
838	RETURN_VERR_BAD_EXE_FORMAT;
839
840	for (i = 0; i < pFat->nfat_arch; i++)
841	{
842	if ( paFatArches[i].cputype == MY_CPU_TYPE
843	&& paFatArches[i].cpusubtype == MY_CPU_SUBTYPE_ALL)
844	{
845	pThis->offArch = paFatArches[i].offset;
846	pThis->cbArch = paFatArches[i].size;
847	if (!pThis->cbArch)
848	RETURN_VERR_BAD_EXE_FORMAT;
849	if (pThis->offArch < sizeof(fat_header_t) + sizeof(fat_arch_t) * pFat->nfat_arch)
850	RETURN_VERR_BAD_EXE_FORMAT;
851	if (pThis->offArch + pThis->cbArch <= pThis->offArch)
852	RETURN_VERR_LDR_ARCH_MISMATCH;
853	break;
854	}
855	}
856	if (i >= pFat->nfat_arch)
857	RETURN_VERR_LDR_ARCH_MISMATCH;
858	}
859
860	/*
861	* Read the Mach-O header and validate it.
862	*/
863	rc = RTFileReadAt(pThis->hFile, pThis->offArch, pThis->abBuf, sizeof(MY_MACHO_HEADER), NULL);
864	if (RT_FAILURE(rc))
865	return rc;
866	MY_MACHO_HEADER const pHdr = (MY_MACHO_HEADER const )pThis->abBuf;
867	if (pHdr->magic != MY_MACHO_MAGIC)
868	{
869	if ( pHdr->magic == IMAGE_MACHO32_SIGNATURE
870	\|\| pHdr->magic == IMAGE_MACHO32_SIGNATURE_OE
871	\|\| pHdr->magic == IMAGE_MACHO64_SIGNATURE
872	\|\| pHdr->magic == IMAGE_MACHO64_SIGNATURE_OE)
873	RETURN_VERR_LDR_ARCH_MISMATCH;
874	RETURN_VERR_BAD_EXE_FORMAT;
875	}
876
877	if (pHdr->cputype != MY_CPU_TYPE)
878	RETURN_VERR_LDR_ARCH_MISMATCH;
879	if (pHdr->cpusubtype != MY_CPU_SUBTYPE_ALL)
880	RETURN_VERR_LDR_ARCH_MISMATCH;
881	if (pHdr->filetype != MH_EXECUTE)
882	RETURN_VERR_LDR_UNEXPECTED;
883	if (pHdr->ncmds < 4)
884	RETURN_VERR_LDR_UNEXPECTED;
885	if (pHdr->ncmds > 256)
886	RETURN_VERR_LDR_UNEXPECTED;
887	if (pHdr->sizeofcmds <= pHdr->ncmds * sizeof(load_command_t))
888	RETURN_VERR_LDR_UNEXPECTED;
889	if (pHdr->sizeofcmds >= _1M)
890	RETURN_VERR_LDR_UNEXPECTED;
891	if (pHdr->flags & ~MH_VALID_FLAGS)
892	RETURN_VERR_LDR_UNEXPECTED;
893
894	pThis->cLoadCmds = pHdr->ncmds;
895	pThis->cbLoadCmds = pHdr->sizeofcmds;
896	return VINF_SUCCESS;
897	}
898
899
900	/**
901	* Destructor.
902	*
903	* @param pThis The instance to destroy.
904	*/
905	static void rtR0DbgKrnlDarwinDtor(RTDBGKRNLINFOINT *pThis)
906	{
907	pThis->u32Magic = ~RTDBGKRNLINFO_MAGIC;
908
909	RTMemFree(pThis->pachStrTab);
910	pThis->pachStrTab = NULL;
911
912	RTMemFree(pThis->paSyms);
913	pThis->paSyms = NULL;
914
915	RTMemFree(pThis);
916	}
917
918
919	static int rtR0DbgKrnlDarwinOpen(PRTDBGKRNLINFO phKrnlInfo, const char *pszKernelFile)
920	{
921	RTDBGKRNLINFOINT pThis = (RTDBGKRNLINFOINT )RTMemAllocZ(sizeof(*pThis));
922	if (!pThis)
923	return VERR_NO_MEMORY;
924	pThis->hFile = NIL_RTFILE;
925
926	int rc = RTFileOpen(&pThis->hFile, pszKernelFile, RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_WRITE);
927	if (RT_SUCCESS(rc))
928	rc = rtR0DbgKrnlDarwinLoadFileHeaders(pThis);
929	if (RT_SUCCESS(rc))
930	rc = rtR0DbgKrnlDarwinLoadCommands(pThis);
931	if (RT_SUCCESS(rc))
932	rc = rtR0DbgKrnlDarwinLoadSymTab(pThis, pszKernelFile);
933	if (RT_SUCCESS(rc))
934	{
935	#ifdef IN_RING0
936	/*
937	* Determine the load displacement (10.8 kernels are PIE).
938	*/
939	uintptr_t uLinkAddr = rtR0DbgKrnlDarwinLookup(pThis, "kernel_map");
940	if (uLinkAddr != 0)
941	pThis->offLoad = (uintptr_t)&kernel_map - uLinkAddr;
942	#endif
943	rc = rtR0DbgKrnlDarwinCheckStandardSymbols(pThis);
944	}
945
946	rtR0DbgKrnlDarwinLoadDone(pThis);
947	if (RT_SUCCESS(rc))
948	{
949	pThis->u32Magic = RTDBGKRNLINFO_MAGIC;
950	pThis->cRefs = 1;
951	*phKrnlInfo = pThis;
952	}
953	else
954	rtR0DbgKrnlDarwinDtor(pThis);
955	return rc;
956	}
957
958
959	RTR0DECL(int) RTR0DbgKrnlInfoOpen(PRTDBGKRNLINFO phKrnlInfo, uint32_t fFlags)
960	{
961	AssertPtrReturn(phKrnlInfo, VERR_INVALID_POINTER);
962	*phKrnlInfo = NIL_RTDBGKRNLINFO;
963	AssertReturn(!fFlags, VERR_INVALID_PARAMETER);
964
965	/*
966	* Go thru likely kernel locations
967	*
968	* Note! Check the OS X version and reorder the list?
969	* Note! We should try fish kcsuffix out of bootargs or somewhere one day.
970	*/
971	static bool s_fFirstCall = true;
972	#ifdef IN_RING3
973	extern const char *g_pszTestKernel;
974	#endif
975	struct
976	{
977	const char *pszLocation;
978	int rc;
979	} aKernels[] =
980	{
981	#ifdef IN_RING3
982	{ g_pszTestKernel, VERR_WRONG_ORDER },
983	#endif
984	{ "/System/Library/Kernels/kernel", VERR_WRONG_ORDER },
985	{ "/System/Library/Kernels/kernel.development", VERR_WRONG_ORDER },
986	{ "/System/Library/Kernels/kernel.debug", VERR_WRONG_ORDER },
987	{ "/mach_kernel", VERR_WRONG_ORDER },
988	};
989	int rc = VERR_WRONG_ORDER; /* shut up stupid MSC */
990	for (uint32_t i = 0; i < RT_ELEMENTS(aKernels); i++)
991	{
992	aKernels[i].rc = rc = rtR0DbgKrnlDarwinOpen(phKrnlInfo, aKernels[i].pszLocation);
993	if (RT_SUCCESS(rc))
994	{
995	if (s_fFirstCall)
996	{
997	printf("RTR0DbgKrnlInfoOpen: Using kernel file '%s'\n", aKernels[i].pszLocation);
998	s_fFirstCall = false;
999	}
1000	return rc;
1001	}
1002	}
1003
1004	/*
1005	* Failed.
1006	*/
1007	/* Pick the best error code. */
1008	for (uint32_t i = 0; rc == VERR_FILE_NOT_FOUND && i < RT_ELEMENTS(aKernels); i++)
1009	if (aKernels[i].rc != VERR_FILE_NOT_FOUND)
1010	rc = aKernels[i].rc;
1011
1012	/* Bitch about it. */
1013	printf("RTR0DbgKrnlInfoOpen: failed to find matching kernel file! rc=%d\n", rc);
1014	if (s_fFirstCall)
1015	{
1016	for (uint32_t i = 0; i < RT_ELEMENTS(aKernels); i++)
1017	printf("RTR0DbgKrnlInfoOpen: '%s' -> %d\n", aKernels[i].pszLocation, aKernels[i].rc);
1018	s_fFirstCall = false;
1019	}
1020
1021	return rc;
1022	}
1023
1024
1025	RTR0DECL(uint32_t) RTR0DbgKrnlInfoRetain(RTDBGKRNLINFO hKrnlInfo)
1026	{
1027	RTDBGKRNLINFOINT *pThis = hKrnlInfo;
1028	AssertPtrReturn(pThis, UINT32_MAX);
1029	AssertMsgReturn(pThis->u32Magic == RTDBGKRNLINFO_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), UINT32_MAX);
1030
1031	uint32_t cRefs = ASMAtomicIncU32(&pThis->cRefs);
1032	Assert(cRefs && cRefs < 100000);
1033	return cRefs;
1034	}
1035
1036
1037	RTR0DECL(uint32_t) RTR0DbgKrnlInfoRelease(RTDBGKRNLINFO hKrnlInfo)
1038	{
1039	RTDBGKRNLINFOINT *pThis = hKrnlInfo;
1040	if (pThis == NIL_RTDBGKRNLINFO)
1041	return 0;
1042	AssertPtrReturn(pThis, UINT32_MAX);
1043	AssertMsgReturn(pThis->u32Magic == RTDBGKRNLINFO_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), UINT32_MAX);
1044
1045	uint32_t cRefs = ASMAtomicDecU32(&pThis->cRefs);
1046	if (cRefs == 0)
1047	rtR0DbgKrnlDarwinDtor(pThis);
1048	return cRefs;
1049	}
1050
1051
1052	RTR0DECL(int) RTR0DbgKrnlInfoQueryMember(RTDBGKRNLINFO hKrnlInfo, const char pszModule, const char pszStructure,
1053	const char pszMember, size_t poffMember)
1054	{
1055	RTDBGKRNLINFOINT *pThis = hKrnlInfo;
1056	AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
1057	AssertMsgReturn(pThis->u32Magic == RTDBGKRNLINFO_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE);
1058	AssertPtrReturn(pszMember, VERR_INVALID_POINTER);
1059	AssertPtrReturn(pszModule, VERR_INVALID_POINTER);
1060	AssertPtrReturn(pszStructure, VERR_INVALID_POINTER);
1061	AssertPtrReturn(poffMember, VERR_INVALID_POINTER);
1062	return VERR_NOT_FOUND;
1063	}
1064
1065
1066	RTR0DECL(int) RTR0DbgKrnlInfoQuerySymbol(RTDBGKRNLINFO hKrnlInfo, const char *pszModule,
1067	const char pszSymbol, void *ppvSymbol)
1068	{
1069	RTDBGKRNLINFOINT *pThis = hKrnlInfo;
1070	AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
1071	AssertMsgReturn(pThis->u32Magic == RTDBGKRNLINFO_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE);
1072	AssertPtrReturn(pszSymbol, VERR_INVALID_PARAMETER);
1073	AssertPtrNullReturn(ppvSymbol, VERR_INVALID_PARAMETER);
1074	AssertReturn(!pszModule, VERR_MODULE_NOT_FOUND);
1075
1076	uintptr_t uValue = rtR0DbgKrnlDarwinLookup(pThis, pszSymbol);
1077	if (ppvSymbol)
1078	ppvSymbol = (void )uValue;
1079	if (uValue)
1080	return VINF_SUCCESS;
1081	return VERR_SYMBOL_NOT_FOUND;
1082	}
1083

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source: vbox/trunk/src/VBox/Runtime/r0drv/darwin/dbgkrnlinfo-r0drv-darwin.cpp@ 75039

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