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Sweden-Number/dlls/dbghelp/macho_module.c

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/*
* File macho_module.c - processing of Mach-O files
* Originally based on elf_module.c
*
* Copyright (C) 1996, Eric Youngdale.
* 1999-2007 Eric Pouech
* 2009 Ken Thomases, CodeWeavers Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#ifdef HAVE_MACH_O_LOADER_H
#include <CoreFoundation/CFString.h>
#define LoadResource mac_LoadResource
#define GetCurrentThread mac_GetCurrentThread
#include <CoreServices/CoreServices.h>
#undef LoadResource
#undef GetCurrentThread
#endif
#include <stdio.h>
#include <assert.h>
#include <stdarg.h>
#include <errno.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "dbghelp_private.h"
#include "winternl.h"
#include "wine/library.h"
#include "wine/debug.h"
#include "wine/heap.h"
#include "image_private.h"
#ifdef HAVE_MACH_O_LOADER_H
#include <mach-o/fat.h>
#include <mach-o/loader.h>
#include <mach-o/nlist.h>
#include <mach-o/dyld.h>
#ifdef HAVE_MACH_O_DYLD_IMAGES_H
#include <mach-o/dyld_images.h>
#else
struct dyld_image_info {
const struct mach_header *imageLoadAddress;
const char *imageFilePath;
uintptr_t imageFileModDate;
};
struct dyld_all_image_infos {
uint32_t version;
uint32_t infoArrayCount;
const struct dyld_image_info *infoArray;
void* notification;
int processDetachedFromSharedRegion;
};
#endif
#ifdef WORDS_BIGENDIAN
#define swap_ulong_be_to_host(n) (n)
#else
#define swap_ulong_be_to_host(n) (RtlUlongByteSwap(n))
#endif
WINE_DEFAULT_DEBUG_CHANNEL(dbghelp_macho);
/* Bitmask for Mach-O image header flags indicating that the image is in dyld's
shared cached. That implies that its segments are mapped non-contiguously.
This value isn't defined anywhere in headers. It's used in dyld and in
debuggers which support OS X as a magic number.
The flag also isn't set in the on-disk image file. It's only set in
memory by dyld. */
#define MACHO_DYLD_IN_SHARED_CACHE 0x80000000
#define UUID_STRING_LEN 37 /* 16 bytes at 2 hex digits apiece, 4 dashes, and the null terminator */
struct macho_module_info
{
struct image_file_map file_map;
unsigned long load_addr;
unsigned short in_use : 1,
is_loader : 1;
};
struct section_info
{
BOOL split_segs;
unsigned int section_index;
};
#define MACHO_INFO_DEBUG_HEADER 0x0001
#define MACHO_INFO_MODULE 0x0002
#define MACHO_INFO_NAME 0x0004
struct macho_info
{
unsigned flags; /* IN one (or several) of the MACHO_INFO constants */
unsigned long dbg_hdr_addr; /* OUT address of debug header (if MACHO_INFO_DEBUG_HEADER is set) */
struct module* module; /* OUT loaded module (if MACHO_INFO_MODULE is set) */
const WCHAR* module_name; /* OUT found module name (if MACHO_INFO_NAME is set) */
};
static void macho_unmap_file(struct image_file_map* fmap);
static char* format_uuid(const uint8_t uuid[16], char out[UUID_STRING_LEN])
{
sprintf(out, "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5], uuid[6], uuid[7],
uuid[8], uuid[9], uuid[10], uuid[11], uuid[12], uuid[13], uuid[14], uuid[15]);
return out;
}
/******************************************************************
* macho_calc_range
*
* For a range (offset & length) of a single architecture within
* a Mach-O file, calculate the page-aligned range of the whole file
* that encompasses it. For a fat binary, the architecture will
* itself be offset within the file, so take that into account.
*/
static void macho_calc_range(const struct macho_file_map* fmap, unsigned long offset,
unsigned long len, unsigned long* out_aligned_offset,
unsigned long* out_aligned_end, unsigned long* out_aligned_len,
unsigned long* out_misalign)
{
unsigned long pagemask = sysconf( _SC_PAGESIZE ) - 1;
unsigned long file_offset, misalign;
file_offset = fmap->arch_offset + offset;
misalign = file_offset & pagemask;
*out_aligned_offset = file_offset - misalign;
*out_aligned_end = (file_offset + len + pagemask) & ~pagemask;
if (out_aligned_len)
*out_aligned_len = *out_aligned_end - *out_aligned_offset;
if (out_misalign)
*out_misalign = misalign;
}
/******************************************************************
* macho_map_range
*
* Maps a range (offset, length in bytes) from a Mach-O file into memory
*/
static const char* macho_map_range(const struct macho_file_map* fmap, unsigned long offset, unsigned long len,
const char** base)
{
unsigned long misalign, aligned_offset, aligned_map_end, map_size;
const void* aligned_ptr;
TRACE("(%p/%d, 0x%08lx, 0x%08lx)\n", fmap, fmap->fd, offset, len);
macho_calc_range(fmap, offset, len, &aligned_offset, &aligned_map_end,
&map_size, &misalign);
aligned_ptr = mmap(NULL, map_size, PROT_READ, MAP_PRIVATE, fmap->fd, aligned_offset);
TRACE("Mapped (0x%08lx - 0x%08lx) to %p\n", aligned_offset, aligned_map_end, aligned_ptr);
if (aligned_ptr == MAP_FAILED) return IMAGE_NO_MAP;
if (base)
*base = aligned_ptr;
return (const char*)aligned_ptr + misalign;
}
/******************************************************************
* macho_unmap_range
*
* Unmaps a range (offset, length in bytes) of a Mach-O file from memory
*/
static void macho_unmap_range(const char** base, const void** mapped, const struct macho_file_map* fmap,
unsigned long offset, unsigned long len)
{
TRACE("(%p, %p, %p/%d, 0x%08lx, 0x%08lx)\n", base, mapped, fmap, fmap->fd, offset, len);
if ((mapped && *mapped != IMAGE_NO_MAP) || (base && *base != IMAGE_NO_MAP))
{
unsigned long misalign, aligned_offset, aligned_map_end, map_size;
void* aligned_ptr;
macho_calc_range(fmap, offset, len, &aligned_offset, &aligned_map_end,
&map_size, &misalign);
if (mapped)
aligned_ptr = (char*)*mapped - misalign;
else
aligned_ptr = (void*)*base;
if (munmap(aligned_ptr, map_size) < 0)
WARN("Couldn't unmap the range\n");
TRACE("Unmapped (0x%08lx - 0x%08lx) from %p - %p\n", aligned_offset, aligned_map_end, aligned_ptr, (char*)aligned_ptr + map_size);
if (mapped)
*mapped = IMAGE_NO_MAP;
if (base)
*base = IMAGE_NO_MAP;
}
}
/******************************************************************
* macho_map_ranges
*
* Maps two ranges (offset, length in bytes) from a Mach-O file
* into memory. If the two ranges overlap, use one mmap so that
* the munmap doesn't fragment the mapping.
*/
static BOOL macho_map_ranges(const struct macho_file_map* fmap,
unsigned long offset1, unsigned long len1,
unsigned long offset2, unsigned long len2,
const void** mapped1, const void** mapped2)
{
unsigned long aligned_offset1, aligned_map_end1;
unsigned long aligned_offset2, aligned_map_end2;
TRACE("(%p/%d, 0x%08lx, 0x%08lx, 0x%08lx, 0x%08lx, %p, %p)\n", fmap, fmap->fd,
offset1, len1, offset2, len2, mapped1, mapped2);
macho_calc_range(fmap, offset1, len1, &aligned_offset1, &aligned_map_end1, NULL, NULL);
macho_calc_range(fmap, offset2, len2, &aligned_offset2, &aligned_map_end2, NULL, NULL);
if (aligned_map_end1 < aligned_offset2 || aligned_map_end2 < aligned_offset1)
{
*mapped1 = macho_map_range(fmap, offset1, len1, NULL);
if (*mapped1 != IMAGE_NO_MAP)
{
*mapped2 = macho_map_range(fmap, offset2, len2, NULL);
if (*mapped2 == IMAGE_NO_MAP)
macho_unmap_range(NULL, mapped1, fmap, offset1, len1);
}
}
else
{
if (offset1 < offset2)
{
*mapped1 = macho_map_range(fmap, offset1, offset2 + len2 - offset1, NULL);
if (*mapped1 != IMAGE_NO_MAP)
*mapped2 = (const char*)*mapped1 + offset2 - offset1;
}
else
{
*mapped2 = macho_map_range(fmap, offset2, offset1 + len1 - offset2, NULL);
if (*mapped2 != IMAGE_NO_MAP)
*mapped1 = (const char*)*mapped2 + offset1 - offset2;
}
}
TRACE(" => %p, %p\n", *mapped1, *mapped2);
return (*mapped1 != IMAGE_NO_MAP) && (*mapped2 != IMAGE_NO_MAP);
}
/******************************************************************
* macho_unmap_ranges
*
* Unmaps two ranges (offset, length in bytes) of a Mach-O file
* from memory. Use for ranges which were mapped by
* macho_map_ranges.
*/
static void macho_unmap_ranges(const struct macho_file_map* fmap,
unsigned long offset1, unsigned long len1,
unsigned long offset2, unsigned long len2,
const void** mapped1, const void** mapped2)
{
unsigned long aligned_offset1, aligned_map_end1;
unsigned long aligned_offset2, aligned_map_end2;
TRACE("(%p/%d, 0x%08lx, 0x%08lx, 0x%08lx, 0x%08lx, %p/%p, %p/%p)\n", fmap, fmap->fd,
offset1, len1, offset2, len2, mapped1, *mapped1, mapped2, *mapped2);
macho_calc_range(fmap, offset1, len1, &aligned_offset1, &aligned_map_end1, NULL, NULL);
macho_calc_range(fmap, offset2, len2, &aligned_offset2, &aligned_map_end2, NULL, NULL);
if (aligned_map_end1 < aligned_offset2 || aligned_map_end2 < aligned_offset1)
{
macho_unmap_range(NULL, mapped1, fmap, offset1, len1);
macho_unmap_range(NULL, mapped2, fmap, offset2, len2);
}
else
{
if (offset1 < offset2)
{
macho_unmap_range(NULL, mapped1, fmap, offset1, offset2 + len2 - offset1);
*mapped2 = IMAGE_NO_MAP;
}
else
{
macho_unmap_range(NULL, mapped2, fmap, offset2, offset1 + len1 - offset2);
*mapped1 = IMAGE_NO_MAP;
}
}
}
/******************************************************************
* macho_find_section
*/
BOOL macho_find_section(struct image_file_map* ifm, const char* segname, const char* sectname, struct image_section_map* ism)
{
struct macho_file_map* fmap;
unsigned i;
char tmp[sizeof(fmap->sect[0].section.sectname)];
/* Other parts of dbghelp use section names like ".eh_frame". Mach-O uses
names like "__eh_frame". Convert those. */
if (sectname[0] == '.')
{
lstrcpynA(tmp, "__", sizeof(tmp));
lstrcpynA(tmp + 2, sectname + 1, sizeof(tmp) - 2);
sectname = tmp;
}
while (ifm)
{
fmap = &ifm->u.macho;
for (i = 0; i < fmap->num_sections; i++)
{
if (!fmap->sect[i].ignored &&
strcmp(fmap->sect[i].section.sectname, sectname) == 0 &&
(!segname || strcmp(fmap->sect[i].section.segname, segname) == 0))
{
ism->fmap = ifm;
ism->sidx = i;
return TRUE;
}
}
ifm = fmap->dsym;
}
ism->fmap = NULL;
ism->sidx = -1;
return FALSE;
}
/******************************************************************
* macho_map_section
*/
const char* macho_map_section(struct image_section_map* ism)
{
struct macho_file_map* fmap = &ism->fmap->u.macho;
assert(ism->fmap->modtype == DMT_MACHO);
if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.macho.num_sections || fmap->sect[ism->sidx].ignored)
return IMAGE_NO_MAP;
return macho_map_range(fmap, fmap->sect[ism->sidx].section.offset, fmap->sect[ism->sidx].section.size,
&fmap->sect[ism->sidx].mapped);
}
/******************************************************************
* macho_unmap_section
*/
void macho_unmap_section(struct image_section_map* ism)
{
struct macho_file_map* fmap = &ism->fmap->u.macho;
if (ism->sidx >= 0 && ism->sidx < fmap->num_sections && fmap->sect[ism->sidx].mapped != IMAGE_NO_MAP)
{
macho_unmap_range(&fmap->sect[ism->sidx].mapped, NULL, fmap, fmap->sect[ism->sidx].section.offset,
fmap->sect[ism->sidx].section.size);
}
}
/******************************************************************
* macho_get_map_rva
*/
DWORD_PTR macho_get_map_rva(const struct image_section_map* ism)
{
if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.macho.num_sections ||
ism->fmap->u.macho.sect[ism->sidx].ignored)
return 0;
return ism->fmap->u.macho.sect[ism->sidx].section.addr - ism->fmap->u.macho.segs_start;
}
/******************************************************************
* macho_get_map_size
*/
unsigned macho_get_map_size(const struct image_section_map* ism)
{
if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.macho.num_sections ||
ism->fmap->u.macho.sect[ism->sidx].ignored)
return 0;
return ism->fmap->u.macho.sect[ism->sidx].section.size;
}
/******************************************************************
* macho_map_load_commands
*
* Maps the load commands from a Mach-O file into memory
*/
static const struct load_command* macho_map_load_commands(struct macho_file_map* fmap)
{
if (fmap->load_commands == IMAGE_NO_MAP)
{
fmap->load_commands = (const struct load_command*) macho_map_range(
fmap, fmap->header_size, fmap->mach_header.sizeofcmds, NULL);
TRACE("Mapped load commands: %p\n", fmap->load_commands);
}
return fmap->load_commands;
}
/******************************************************************
* macho_unmap_load_commands
*
* Unmaps the load commands of a Mach-O file from memory
*/
static void macho_unmap_load_commands(struct macho_file_map* fmap)
{
if (fmap->load_commands != IMAGE_NO_MAP)
{
TRACE("Unmapping load commands: %p\n", fmap->load_commands);
macho_unmap_range(NULL, (const void**)&fmap->load_commands, fmap,
fmap->header_size, fmap->mach_header.sizeofcmds);
}
}
/******************************************************************
* macho_next_load_command
*
* Advance to the next load command
*/
static const struct load_command* macho_next_load_command(const struct load_command* lc)
{
return (const struct load_command*)((const char*)lc + lc->cmdsize);
}
/******************************************************************
* macho_enum_load_commands
*
* Enumerates the load commands for a Mach-O file, selecting by
* the command type, calling a callback for each. If the callback
* returns <0, that indicates an error. If it returns >0, that means
* it's not interested in getting any more load commands.
* If this function returns <0, that's an error produced by the
* callback. If >=0, that's the count of load commands successfully
* processed.
*/
static int macho_enum_load_commands(struct image_file_map *ifm, unsigned cmd,
int (*cb)(struct image_file_map*, const struct load_command*, void*),
void* user)
{
struct macho_file_map* fmap = &ifm->u.macho;
const struct load_command* lc;
int i;
int count = 0;
TRACE("(%p/%d, %u, %p, %p)\n", fmap, fmap->fd, cmd, cb, user);
if ((lc = macho_map_load_commands(fmap)) == IMAGE_NO_MAP) return -1;
TRACE("%d total commands\n", fmap->mach_header.ncmds);
for (i = 0; i < fmap->mach_header.ncmds; i++, lc = macho_next_load_command(lc))
{
int result;
if (cmd && cmd != lc->cmd) continue;
count++;
result = cb(ifm, lc, user);
TRACE("load_command[%d] (%p), cmd %u; callback => %d\n", i, lc, lc->cmd, result);
if (result) return (result < 0) ? result : count;
}
return count;
}
/******************************************************************
* macho_count_sections
*
* Callback for macho_enum_load_commands. Counts the number of
* significant sections in a Mach-O file. All commands are
* expected to be of LC_SEGMENT[_64] type.
*/
static int macho_count_sections(struct image_file_map* ifm, const struct load_command* lc, void* user)
{
char segname[16];
uint32_t nsects;
if (ifm->addr_size == 32)
{
const struct segment_command *sc = (const struct segment_command *)lc;
memcpy(segname, sc->segname, sizeof(segname));
nsects = sc->nsects;
}
else
{
const struct segment_command_64 *sc = (const struct segment_command_64 *)lc;
memcpy(segname, sc->segname, sizeof(segname));
nsects = sc->nsects;
}
TRACE("(%p/%d, %p, %p) segment %s\n", ifm, ifm->u.macho.fd, lc, user,
debugstr_an(segname, sizeof(segname)));
ifm->u.macho.num_sections += nsects;
return 0;
}
/******************************************************************
* macho_load_section_info
*
* Callback for macho_enum_load_commands. Accumulates the address
* range covered by the segments of a Mach-O file and builds the
* section map. All commands are expected to be of LC_SEGMENT[_64] type.
*/
static int macho_load_section_info(struct image_file_map* ifm, const struct load_command* lc, void* user)
{
struct macho_file_map* fmap = &ifm->u.macho;
struct section_info* info = user;
BOOL ignore;
int i;
unsigned long tmp, page_mask = sysconf( _SC_PAGESIZE ) - 1;
uint64_t vmaddr, vmsize;
char segname[16];
uint32_t nsects;
const void *sections;
if (ifm->addr_size == 32)
{
const struct segment_command *sc = (const struct segment_command *)lc;
vmaddr = sc->vmaddr;
vmsize = sc->vmsize;
memcpy(segname, sc->segname, sizeof(segname));
nsects = sc->nsects;
sections = (const void *)(sc + 1);
}
else
{
const struct segment_command_64 *sc = (const struct segment_command_64 *)lc;
vmaddr = sc->vmaddr;
vmsize = sc->vmsize;
memcpy(segname, sc->segname, sizeof(segname));
nsects = sc->nsects;
sections = (const void *)(sc + 1);
}
TRACE("(%p/%d, %p, %p) before: 0x%08lx - 0x%08lx\n", fmap, fmap->fd, lc, user,
(unsigned long)fmap->segs_start, (unsigned long)fmap->segs_size);
TRACE("Segment command vm: 0x%08lx - 0x%08lx\n", (unsigned long)vmaddr,
(unsigned long)(vmaddr + vmsize));
/* Images in the dyld shared cache have their segments mapped non-contiguously.
We don't know how to properly locate any of the segments other than __TEXT,
so ignore them. */
ignore = (info->split_segs && strcmp(segname, SEG_TEXT));
if (!strncmp(segname, "WINE_", 5))
TRACE("Ignoring special Wine segment %s\n", debugstr_an(segname, sizeof(segname)));
else if (!strncmp(segname, "__PAGEZERO", 10))
TRACE("Ignoring __PAGEZERO segment\n");
else if (ignore)
TRACE("Ignoring %s segment because image has split segments\n", segname);
else
{
/* If this segment starts before previously-known earliest, record new earliest. */
if (vmaddr < fmap->segs_start)
fmap->segs_start = vmaddr;
/* If this segment extends beyond previously-known furthest, record new furthest. */
tmp = (vmaddr + vmsize + page_mask) & ~page_mask;
if (fmap->segs_size < tmp) fmap->segs_size = tmp;
TRACE("after: 0x%08lx - 0x%08lx\n", (unsigned long)fmap->segs_start, (unsigned long)fmap->segs_size);
}
for (i = 0; i < nsects; i++)
{
if (ifm->addr_size == 32)
{
const struct section *section = &((const struct section *)sections)[i];
memcpy(fmap->sect[info->section_index].section.sectname, section->sectname, sizeof(section->sectname));
memcpy(fmap->sect[info->section_index].section.segname, section->segname, sizeof(section->segname));
fmap->sect[info->section_index].section.addr = section->addr;
fmap->sect[info->section_index].section.size = section->size;
fmap->sect[info->section_index].section.offset = section->offset;
fmap->sect[info->section_index].section.align = section->align;
fmap->sect[info->section_index].section.reloff = section->reloff;
fmap->sect[info->section_index].section.nreloc = section->nreloc;
fmap->sect[info->section_index].section.flags = section->flags;
}
else
fmap->sect[info->section_index].section = ((const struct section_64 *)sections)[i];
fmap->sect[info->section_index].mapped = IMAGE_NO_MAP;
fmap->sect[info->section_index].ignored = ignore;
info->section_index++;
}
return 0;
}
/******************************************************************
* find_uuid
*
* Callback for macho_enum_load_commands. Records the UUID load
* command of a Mach-O file.
*/
static int find_uuid(struct image_file_map* ifm, const struct load_command* lc, void* user)
{
ifm->u.macho.uuid = (const struct uuid_command*)lc;
return 1;
}
/******************************************************************
* reset_file_map
*/
static inline void reset_file_map(struct image_file_map* ifm)
{
struct macho_file_map* fmap = &ifm->u.macho;
fmap->fd = -1;
fmap->dsym = NULL;
fmap->load_commands = IMAGE_NO_MAP;
fmap->uuid = NULL;
fmap->num_sections = 0;
fmap->sect = NULL;
}
/******************************************************************
* macho_map_file
*
* Maps a Mach-O file into memory (and checks it's a real Mach-O file)
*/
static BOOL macho_map_file(struct process *pcs, const WCHAR *filenameW,
BOOL split_segs, struct image_file_map* ifm)
{
struct macho_file_map* fmap = &ifm->u.macho;
struct fat_header fat_header;
struct stat statbuf;
int i;
char* filename;
unsigned len;
struct section_info info;
BOOL ret = FALSE;
cpu_type_t target_cpu = (pcs->is_64bit) ? CPU_TYPE_X86_64 : CPU_TYPE_X86;
uint32_t target_magic = (pcs->is_64bit) ? MH_MAGIC_64 : MH_MAGIC;
uint32_t target_cmd = (pcs->is_64bit) ? LC_SEGMENT_64 : LC_SEGMENT;
TRACE("(%s, %p)\n", debugstr_w(filenameW), fmap);
reset_file_map(ifm);
ifm->modtype = DMT_MACHO;
ifm->addr_size = (pcs->is_64bit) ? 64 : 32;
fmap->header_size = (pcs->is_64bit) ? sizeof(struct mach_header_64) : sizeof(struct mach_header);
len = WideCharToMultiByte(CP_UNIXCP, 0, filenameW, -1, NULL, 0, NULL, NULL);
if (!(filename = HeapAlloc(GetProcessHeap(), 0, len)))
{
WARN("failed to allocate filename buffer\n");
return FALSE;
}
WideCharToMultiByte(CP_UNIXCP, 0, filenameW, -1, filename, len, NULL, NULL);
/* check that the file exists */
if (stat(filename, &statbuf) == -1 || S_ISDIR(statbuf.st_mode))
{
TRACE("stat() failed or %s is directory: %s\n", debugstr_a(filename), strerror(errno));
goto done;
}
/* Now open the file, so that we can mmap() it. */
if ((fmap->fd = open(filename, O_RDONLY)) == -1)
{
TRACE("failed to open file %s: %d\n", debugstr_a(filename), errno);
goto done;
}
if (read(fmap->fd, &fat_header, sizeof(fat_header)) != sizeof(fat_header))
{
TRACE("failed to read fat header: %d\n", errno);
goto done;
}
TRACE("... got possible fat header\n");
/* Fat header is always in big-endian order. */
if (swap_ulong_be_to_host(fat_header.magic) == FAT_MAGIC)
{
int narch = swap_ulong_be_to_host(fat_header.nfat_arch);
for (i = 0; i < narch; i++)
{
struct fat_arch fat_arch;
if (read(fmap->fd, &fat_arch, sizeof(fat_arch)) != sizeof(fat_arch))
goto done;
if (swap_ulong_be_to_host(fat_arch.cputype) == target_cpu)
{
fmap->arch_offset = swap_ulong_be_to_host(fat_arch.offset);
break;
}
}
if (i >= narch) goto done;
TRACE("... found target arch (%d)\n", target_cpu);
}
else
{
fmap->arch_offset = 0;
TRACE("... not a fat header\n");
}
/* Individual architecture (standalone or within a fat file) is in its native byte order. */
lseek(fmap->fd, fmap->arch_offset, SEEK_SET);
if (read(fmap->fd, &fmap->mach_header, sizeof(fmap->mach_header)) != sizeof(fmap->mach_header))
goto done;
TRACE("... got possible Mach header\n");
/* and check for a Mach-O header */
if (fmap->mach_header.magic != target_magic ||
fmap->mach_header.cputype != target_cpu) goto done;
/* Make sure the file type is one of the ones we expect. */
switch (fmap->mach_header.filetype)
{
case MH_EXECUTE:
case MH_DYLIB:
case MH_DYLINKER:
case MH_BUNDLE:
case MH_DSYM:
break;
default:
goto done;
}
TRACE("... verified Mach header\n");
fmap->num_sections = 0;
if (macho_enum_load_commands(ifm, target_cmd, macho_count_sections, NULL) < 0)
goto done;
TRACE("%d sections\n", fmap->num_sections);
fmap->sect = HeapAlloc(GetProcessHeap(), 0, fmap->num_sections * sizeof(fmap->sect[0]));
if (!fmap->sect)
goto done;
fmap->segs_size = 0;
fmap->segs_start = ~0L;
info.split_segs = split_segs;
info.section_index = 0;
if (macho_enum_load_commands(ifm, target_cmd, macho_load_section_info, &info) < 0)
{
fmap->num_sections = 0;
goto done;
}
fmap->segs_size -= fmap->segs_start;
TRACE("segs_start: 0x%08lx, segs_size: 0x%08lx\n", (unsigned long)fmap->segs_start,
(unsigned long)fmap->segs_size);
if (macho_enum_load_commands(ifm, LC_UUID, find_uuid, NULL) < 0)
goto done;
if (fmap->uuid)
{
char uuid_string[UUID_STRING_LEN];
TRACE("UUID %s\n", format_uuid(fmap->uuid->uuid, uuid_string));
}
else
TRACE("no UUID found\n");
ret = TRUE;
done:
if (!ret)
macho_unmap_file(ifm);
HeapFree(GetProcessHeap(), 0, filename);
return ret;
}
/******************************************************************
* macho_unmap_file
*
* Unmaps a Mach-O file from memory (previously mapped with macho_map_file)
*/
static void macho_unmap_file(struct image_file_map* ifm)
{
struct image_file_map* cursor;
TRACE("(%p/%d)\n", ifm, ifm->u.macho.fd);
cursor = ifm;
while (cursor)
{
struct image_file_map* next;
if (ifm->u.macho.fd != -1)
{
struct image_section_map ism;
ism.fmap = ifm;
for (ism.sidx = 0; ism.sidx < ifm->u.macho.num_sections; ism.sidx++)
macho_unmap_section(&ism);
HeapFree(GetProcessHeap(), 0, ifm->u.macho.sect);
macho_unmap_load_commands(&ifm->u.macho);
close(ifm->u.macho.fd);
ifm->u.macho.fd = -1;
}
next = cursor->u.macho.dsym;
if (cursor != ifm)
HeapFree(GetProcessHeap(), 0, cursor);
cursor = next;
}
}
/******************************************************************
* macho_sect_is_code
*
* Checks if a section, identified by sectidx which is a 1-based
* index into the sections of all segments, in order of load
* commands, contains code.
*/
static BOOL macho_sect_is_code(struct macho_file_map* fmap, unsigned char sectidx)
{
BOOL ret;
TRACE("(%p/%d, %u)\n", fmap, fmap->fd, sectidx);
if (!sectidx) return FALSE;
sectidx--; /* convert from 1-based to 0-based */
if (sectidx >= fmap->num_sections || fmap->sect[sectidx].ignored) return FALSE;
ret = (!(fmap->sect[sectidx].section.flags & SECTION_TYPE) &&
(fmap->sect[sectidx].section.flags & (S_ATTR_PURE_INSTRUCTIONS|S_ATTR_SOME_INSTRUCTIONS)));
TRACE("-> %d\n", ret);
return ret;
}
struct symtab_elt
{
struct hash_table_elt ht_elt;
struct symt_compiland* compiland;
unsigned long addr;
unsigned char is_code:1,
is_public:1,
is_global:1,
used:1;
};
struct macho_debug_info
{
struct macho_file_map* fmap;
struct module* module;
struct pool pool;
struct hash_table ht_symtab;
};
/******************************************************************
* macho_stabs_def_cb
*
* Callback for stabs_parse. Collect symbol definitions.
*/
static void macho_stabs_def_cb(struct module* module, unsigned long load_offset,
const char* name, unsigned long offset,
BOOL is_public, BOOL is_global, unsigned char sectidx,
struct symt_compiland* compiland, void* user)
{
struct macho_debug_info* mdi = user;
struct symtab_elt* ste;
TRACE("(%p, 0x%08lx, %s, 0x%08lx, %d, %d, %u, %p, %p/%p/%d)\n", module, load_offset,
debugstr_a(name), offset, is_public, is_global, sectidx,
compiland, mdi, mdi->fmap, mdi->fmap->fd);
/* Defer the creation of new non-debugging symbols until after we've
* finished parsing the stabs. */
ste = pool_alloc(&mdi->pool, sizeof(*ste));
ste->ht_elt.name = pool_strdup(&mdi->pool, name);
ste->compiland = compiland;
ste->addr = load_offset + offset;
ste->is_code = !!macho_sect_is_code(mdi->fmap, sectidx);
ste->is_public = !!is_public;
ste->is_global = !!is_global;
ste->used = 0;
hash_table_add(&mdi->ht_symtab, &ste->ht_elt);
}
/******************************************************************
* macho_parse_symtab
*
* Callback for macho_enum_load_commands. Processes the LC_SYMTAB
* load commands from the Mach-O file.
*/
static int macho_parse_symtab(struct image_file_map* ifm,
const struct load_command* lc, void* user)
{
struct macho_file_map* fmap = &ifm->u.macho;
const struct symtab_command* sc = (const struct symtab_command*)lc;
struct macho_debug_info* mdi = user;
const char* stabstr;
int ret = 0;
size_t stabsize = (ifm->addr_size == 32) ? sizeof(struct nlist) : sizeof(struct nlist_64);
const char *stab;
TRACE("(%p/%d, %p, %p) %u syms at 0x%08x, strings 0x%08x - 0x%08x\n", fmap, fmap->fd, lc,
user, sc->nsyms, sc->symoff, sc->stroff, sc->stroff + sc->strsize);
if (!macho_map_ranges(fmap, sc->symoff, sc->nsyms * stabsize,
sc->stroff, sc->strsize, (const void**)&stab, (const void**)&stabstr))
return 0;
if (!stabs_parse(mdi->module,
mdi->module->format_info[DFI_MACHO]->u.macho_info->load_addr - fmap->segs_start,
stab, sc->nsyms * stabsize,
stabstr, sc->strsize, macho_stabs_def_cb, mdi))
ret = -1;
macho_unmap_ranges(fmap, sc->symoff, sc->nsyms * stabsize,
sc->stroff, sc->strsize, (const void**)&stab, (const void**)&stabstr);
return ret;
}
/******************************************************************
* macho_finish_stabs
*
* Integrate the non-debugging symbols we've gathered into the
* symbols that were generated during stabs parsing.
*/
static void macho_finish_stabs(struct module* module, struct hash_table* ht_symtab)
{
struct hash_table_iter hti_ours;
struct symtab_elt* ste;
BOOL adjusted = FALSE;
TRACE("(%p, %p)\n", module, ht_symtab);
/* For each of our non-debugging symbols, see if it can provide some
* missing details to one of the module's known symbols. */
hash_table_iter_init(ht_symtab, &hti_ours, NULL);
while ((ste = hash_table_iter_up(&hti_ours)))
{
struct hash_table_iter hti_modules;
void* ptr;
struct symt_ht* sym;
struct symt_function* func;
struct symt_data* data;
hash_table_iter_init(&module->ht_symbols, &hti_modules, ste->ht_elt.name);
while ((ptr = hash_table_iter_up(&hti_modules)))
{
sym = CONTAINING_RECORD(ptr, struct symt_ht, hash_elt);
if (strcmp(sym->hash_elt.name, ste->ht_elt.name))
continue;
switch (sym->symt.tag)
{
case SymTagFunction:
func = (struct symt_function*)sym;
if (func->address == module->format_info[DFI_MACHO]->u.macho_info->load_addr)
{
TRACE("Adjusting function %p/%s!%s from 0x%08lx to 0x%08lx\n", func,
debugstr_w(module->module.ModuleName), sym->hash_elt.name,
func->address, ste->addr);
func->address = ste->addr;
adjusted = TRUE;
}
if (func->address == ste->addr)
ste->used = 1;
break;
case SymTagData:
data = (struct symt_data*)sym;
switch (data->kind)
{
case DataIsGlobal:
case DataIsFileStatic:
if (data->u.var.offset == module->format_info[DFI_MACHO]->u.macho_info->load_addr)
{
TRACE("Adjusting data symbol %p/%s!%s from 0x%08lx to 0x%08lx\n",
data, debugstr_w(module->module.ModuleName), sym->hash_elt.name,
data->u.var.offset, ste->addr);
data->u.var.offset = ste->addr;
adjusted = TRUE;
}
if (data->u.var.offset == ste->addr)
{
enum DataKind new_kind;
new_kind = ste->is_global ? DataIsGlobal : DataIsFileStatic;
if (data->kind != new_kind)
{
WARN("Changing kind for %p/%s!%s from %d to %d\n", sym,
debugstr_w(module->module.ModuleName), sym->hash_elt.name,
(int)data->kind, (int)new_kind);
data->kind = new_kind;
adjusted = TRUE;
}
ste->used = 1;
}
break;
default:;
}
break;
default:
TRACE("Ignoring tag %u\n", sym->symt.tag);
break;
}
}
}
if (adjusted)
{
/* since we may have changed some addresses, mark the module to be resorted */
module->sortlist_valid = FALSE;
}
/* Mark any of our non-debugging symbols which fall on an already-used
* address as "used". This allows us to skip them in the next loop,
* below. We do this in separate loops because symt_new_* marks the
* list as needing sorting and symt_find_nearest sorts if needed,
* causing thrashing. */
if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
{
hash_table_iter_init(ht_symtab, &hti_ours, NULL);
while ((ste = hash_table_iter_up(&hti_ours)))
{
struct symt_ht* sym;
ULONG64 addr;
if (ste->used) continue;
sym = symt_find_nearest(module, ste->addr);
if (sym)
symt_get_address(&sym->symt, &addr);
if (sym && ste->addr == addr)
{
ULONG64 size = 0;
DWORD kind = -1;
ste->used = 1;
/* If neither symbol has a correct size (ours never does), we
* consider them both to be markers. No warning is needed in
* that case.
* Also, we check that we don't have two symbols, one local, the other
* global, which is legal.
*/
symt_get_info(module, &sym->symt, TI_GET_LENGTH, &size);
symt_get_info(module, &sym->symt, TI_GET_DATAKIND, &kind);
if (size && kind == (ste->is_global ? DataIsGlobal : DataIsFileStatic))
FIXME("Duplicate in %s: %s<%08lx> %s<%s-%s>\n",
debugstr_w(module->module.ModuleName),
ste->ht_elt.name, ste->addr,
sym->hash_elt.name,
wine_dbgstr_longlong(addr), wine_dbgstr_longlong(size));
}
}
}
/* For any of our remaining non-debugging symbols which have no match
* among the module's known symbols, add them as new symbols. */
hash_table_iter_init(ht_symtab, &hti_ours, NULL);
while ((ste = hash_table_iter_up(&hti_ours)))
{
if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY) && !ste->used)
{
if (ste->is_code)
{
symt_new_function(module, ste->compiland, ste->ht_elt.name,
ste->addr, 0, NULL);
}
else
{
struct location loc;
loc.kind = loc_absolute;
loc.reg = 0;
loc.offset = ste->addr;
symt_new_global_variable(module, ste->compiland, ste->ht_elt.name,
!ste->is_global, loc, 0, NULL);
}
ste->used = 1;
}
if (ste->is_public && !(dbghelp_options & SYMOPT_NO_PUBLICS))
{
symt_new_public(module, ste->compiland, ste->ht_elt.name, ste->is_code, ste->addr, 0);
}
}
}
/******************************************************************
* try_dsym
*
* Try to load a debug symbol file from the given path and check
* if its UUID matches the UUID of an already-mapped file. If so,
* stash the file map in the "dsym" field of the file and return
* TRUE. If it can't be mapped or its UUID doesn't match, return
* FALSE.
*/
static BOOL try_dsym(struct process *pcs, const WCHAR* path, struct macho_file_map* fmap)
{
struct image_file_map dsym_ifm;
if (macho_map_file(pcs, path, FALSE, &dsym_ifm))
{
char uuid_string[UUID_STRING_LEN];
if (dsym_ifm.u.macho.uuid && !memcmp(dsym_ifm.u.macho.uuid->uuid, fmap->uuid->uuid, sizeof(fmap->uuid->uuid)))
{
TRACE("found matching debug symbol file at %s\n", debugstr_w(path));
fmap->dsym = HeapAlloc(GetProcessHeap(), 0, sizeof(dsym_ifm));
*fmap->dsym = dsym_ifm;
return TRUE;
}
TRACE("candidate debug symbol file at %s has wrong UUID %s; ignoring\n", debugstr_w(path),
format_uuid(dsym_ifm.u.macho.uuid->uuid, uuid_string));
macho_unmap_file(&dsym_ifm);
}
else
TRACE("couldn't map file at %s\n", debugstr_w(path));
return FALSE;
}
/******************************************************************
* find_and_map_dsym
*
* Search for a debugging symbols file associated with a module and
* map it. First look for a .dSYM bundle next to the module file
* (e.g. <path>.dSYM/Contents/Resources/DWARF/<basename of path>)
* as produced by dsymutil. Next, look for a .dwarf file next to
* the module file (e.g. <path>.dwarf) as produced by
* "dsymutil --flat". Finally, use Spotlight to search for a
* .dSYM bundle with the same UUID as the module file.
*/
static void find_and_map_dsym(struct process *pcs, struct module* module)
{
static const WCHAR dot_dsym[] = {'.','d','S','Y','M',0};
static const WCHAR dsym_subpath[] = {'/','C','o','n','t','e','n','t','s','/','R','e','s','o','u','r','c','e','s','/','D','W','A','R','F','/',0};
static const WCHAR dot_dwarf[] = {'.','d','w','a','r','f',0};
struct macho_file_map* fmap = &module->format_info[DFI_MACHO]->u.macho_info->file_map.u.macho;
const WCHAR* p;
size_t len;
WCHAR* path = NULL;
char uuid_string[UUID_STRING_LEN];
CFStringRef uuid_cfstring;
CFStringRef query_string;
MDQueryRef query = NULL;
/* Without a UUID, we can't verify that any debug info file we find corresponds
to this file. Better to have no debug info than incorrect debug info. */
if (!fmap->uuid)
return;
if ((p = strrchrW(module->module.LoadedImageName, '/')))
p++;
else
p = module->module.LoadedImageName;
len = strlenW(module->module.LoadedImageName) + strlenW(dot_dsym) + strlenW(dsym_subpath) + strlenW(p) + 1;
path = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
if (!path)
return;
strcpyW(path, module->module.LoadedImageName);
strcatW(path, dot_dsym);
strcatW(path, dsym_subpath);
strcatW(path, p);
if (try_dsym(pcs, path, fmap))
goto found;
strcpyW(path + strlenW(module->module.LoadedImageName), dot_dwarf);
if (try_dsym(pcs, path, fmap))
goto found;
format_uuid(fmap->uuid->uuid, uuid_string);
uuid_cfstring = CFStringCreateWithCString(NULL, uuid_string, kCFStringEncodingASCII);
query_string = CFStringCreateWithFormat(NULL, NULL, CFSTR("com_apple_xcode_dsym_uuids == \"%@\""), uuid_cfstring);
CFRelease(uuid_cfstring);
query = MDQueryCreate(NULL, query_string, NULL, NULL);
CFRelease(query_string);
MDQuerySetMaxCount(query, 1);
if (MDQueryExecute(query, kMDQuerySynchronous) && MDQueryGetResultCount(query) >= 1)
{
MDItemRef item = (MDItemRef)MDQueryGetResultAtIndex(query, 0);
CFStringRef item_path = MDItemCopyAttribute(item, kMDItemPath);
if (item_path)
{
CFIndex item_path_len = CFStringGetLength(item_path);
if (item_path_len + strlenW(dsym_subpath) + strlenW(p) >= len)
{
HeapFree(GetProcessHeap(), 0, path);
len = item_path_len + strlenW(dsym_subpath) + strlenW(p) + 1;
path = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
}
CFStringGetCharacters(item_path, CFRangeMake(0, item_path_len), (UniChar*)path);
strcpyW(path + item_path_len, dsym_subpath);
strcatW(path, p);
CFRelease(item_path);
if (try_dsym(pcs, path, fmap))
goto found;
}
}
found:
HeapFree(GetProcessHeap(), 0, path);
if (query) CFRelease(query);
}
/******************************************************************
* image_uses_split_segs
*
* Determine if the Mach-O image loaded at a particular address in
* the given process is in the dyld shared cache and therefore has
* its segments mapped non-contiguously.
*
* The image header has to be loaded from the process's memory
* because the relevant flag is only set in memory, not in the file.
*/
static BOOL image_uses_split_segs(HANDLE process, unsigned long load_addr)
{
BOOL split_segs = FALSE;
if (process && load_addr)
{
struct process *pcs = process_find_by_handle(process);
cpu_type_t target_cpu = (pcs->is_64bit) ? CPU_TYPE_X86_64 : CPU_TYPE_X86;
uint32_t target_magic = (pcs->is_64bit) ? MH_MAGIC_64 : MH_MAGIC;
struct mach_header header;
if (ReadProcessMemory(process, (void*)load_addr, &header, sizeof(header), NULL) &&
header.magic == target_magic && header.cputype == target_cpu &&
header.flags & MACHO_DYLD_IN_SHARED_CACHE)
{
split_segs = TRUE;
}
}
return split_segs;
}
/******************************************************************
* macho_load_debug_info
*
* Loads Mach-O debugging information from the module image file.
*/
BOOL macho_load_debug_info(struct process *pcs, struct module* module)
{
BOOL ret = FALSE;
struct macho_debug_info mdi;
int result;
struct image_file_map *ifm;
struct macho_file_map *fmap;
if (module->type != DMT_MACHO || !module->format_info[DFI_MACHO]->u.macho_info)
{
ERR("Bad Mach-O module '%s'\n", debugstr_w(module->module.LoadedImageName));
return FALSE;
}
ifm = &module->format_info[DFI_MACHO]->u.macho_info->file_map;
fmap = &ifm->u.macho;
TRACE("(%p, %p/%d)\n", module, fmap, fmap->fd);
module->module.SymType = SymExport;
if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
{
find_and_map_dsym(pcs, module);
if (dwarf2_parse(module, module->reloc_delta, NULL /* FIXME: some thunks to deal with ? */,
&module->format_info[DFI_MACHO]->u.macho_info->file_map))
ret = TRUE;
}
mdi.fmap = fmap;
mdi.module = module;
pool_init(&mdi.pool, 65536);
hash_table_init(&mdi.pool, &mdi.ht_symtab, 256);
result = macho_enum_load_commands(ifm, LC_SYMTAB, macho_parse_symtab, &mdi);
if (result > 0)
ret = TRUE;
else if (result < 0)
WARN("Couldn't correctly read stabs\n");
if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY) && fmap->dsym)
{
mdi.fmap = &fmap->dsym->u.macho;
result = macho_enum_load_commands(fmap->dsym, LC_SYMTAB, macho_parse_symtab, &mdi);
if (result > 0)
ret = TRUE;
else if (result < 0)
WARN("Couldn't correctly read stabs\n");
}
macho_finish_stabs(module, &mdi.ht_symtab);
pool_destroy(&mdi.pool);
return ret;
}
/******************************************************************
* macho_fetch_file_info
*
* Gathers some more information for a Mach-O module from a given file
*/
BOOL macho_fetch_file_info(HANDLE process, const WCHAR* name, unsigned long load_addr, DWORD_PTR* base,
DWORD* size, DWORD* checksum)
{
struct image_file_map fmap;
struct process *pcs;
BOOL split_segs;
TRACE("(%s, %p, %p, %p)\n", debugstr_w(name), base, size, checksum);
pcs = process_find_by_handle(process);
if (!pcs) return FALSE;
split_segs = image_uses_split_segs(process, load_addr);
if (!macho_map_file(pcs, name, split_segs, &fmap)) return FALSE;
if (base) *base = fmap.u.macho.segs_start;
*size = fmap.u.macho.segs_size;
*checksum = calc_crc32(fmap.u.macho.fd);
macho_unmap_file(&fmap);
return TRUE;
}
/******************************************************************
* macho_module_remove
*/
static void macho_module_remove(struct process* pcs, struct module_format* modfmt)
{
macho_unmap_file(&modfmt->u.macho_info->file_map);
HeapFree(GetProcessHeap(), 0, modfmt);
}
/******************************************************************
* get_dyld_image_info_address
*/
static ULONG_PTR get_dyld_image_info_address(struct process* pcs)
{
NTSTATUS status;
PROCESS_BASIC_INFORMATION pbi;
ULONG_PTR dyld_image_info_address = 0;
BOOL ret;
/* Get address of PEB */
status = NtQueryInformationProcess(pcs->handle, ProcessBasicInformation, &pbi, sizeof(pbi), NULL);
if (status == STATUS_SUCCESS)
{
/* Read dyld image info address from PEB */
if (!pcs->is_64bit)
ret = ReadProcessMemory(pcs->handle, &pbi.PebBaseAddress->Reserved[0],
&dyld_image_info_address, sizeof(dyld_image_info_address), NULL);
else
{
PEB32 *peb32 = (PEB32 *)pbi.PebBaseAddress;
ULONG addr32;
ret = ReadProcessMemory(pcs->handle, &peb32->Reserved[0], &addr32,
sizeof(addr32), NULL);
dyld_image_info_address = addr32;
}
if (ret)
TRACE("got dyld_image_info_address %#lx from PEB %p\n",
dyld_image_info_address, pbi.PebBaseAddress);
}
#ifndef __LP64__ /* No reading the symtab with nlist(3) in LP64 */
if (!dyld_image_info_address)
{
static void* dyld_all_image_infos_addr;
/* Our next best guess is that dyld was loaded at its base address
and we can find the dyld image infos address by looking up its symbol. */
if (!dyld_all_image_infos_addr)
{
struct nlist nl[2];
memset(nl, 0, sizeof(nl));
nl[0].n_un.n_name = (char*)"_dyld_all_image_infos";
if (!nlist("/usr/lib/dyld", nl))
dyld_all_image_infos_addr = (void*)nl[0].n_value;
}
if (dyld_all_image_infos_addr)
{
TRACE("got dyld_image_info_address %p from /usr/lib/dyld symbol table\n",
dyld_all_image_infos_addr);
dyld_image_info_address = (ULONG_PTR)dyld_all_image_infos_addr;
}
}
#endif
return dyld_image_info_address;
}
/******************************************************************
* macho_load_file
*
* Loads the information for Mach-O module stored in 'filename'.
* The module has been loaded at 'load_addr' address.
* returns
* FALSE if the file cannot be found/opened or if the file doesn't
* contain symbolic info (or this info cannot be read or parsed)
* TRUE on success
*/
static BOOL macho_load_file(struct process* pcs, const WCHAR* filename,
unsigned long load_addr, struct macho_info* macho_info)
{
BOOL ret = TRUE;
BOOL split_segs;
struct image_file_map fmap;
TRACE("(%p/%p, %s, 0x%08lx, %p/0x%08x)\n", pcs, pcs->handle, debugstr_w(filename),
load_addr, macho_info, macho_info->flags);
split_segs = image_uses_split_segs(pcs->handle, load_addr);
if (!macho_map_file(pcs, filename, split_segs, &fmap)) return FALSE;
/* Find the dynamic loader's table of images loaded into the process.
*/
if (macho_info->flags & MACHO_INFO_DEBUG_HEADER)
{
macho_info->dbg_hdr_addr = (unsigned long)get_dyld_image_info_address(pcs);
ret = TRUE;
}
if (macho_info->flags & MACHO_INFO_MODULE)
{
struct macho_module_info *macho_module_info;
struct module_format* modfmt =
HeapAlloc(GetProcessHeap(), 0, sizeof(struct module_format) + sizeof(struct macho_module_info));
if (!modfmt) goto leave;
if (!load_addr)
load_addr = fmap.u.macho.segs_start;
macho_info->module = module_new(pcs, filename, DMT_MACHO, FALSE, load_addr,
fmap.u.macho.segs_size, 0, calc_crc32(fmap.u.macho.fd));
if (!macho_info->module)
{
HeapFree(GetProcessHeap(), 0, modfmt);
goto leave;
}
macho_info->module->reloc_delta = macho_info->module->module.BaseOfImage - fmap.u.macho.segs_start;
macho_module_info = (void*)(modfmt + 1);
macho_info->module->format_info[DFI_MACHO] = modfmt;
modfmt->module = macho_info->module;
modfmt->remove = macho_module_remove;
modfmt->loc_compute = NULL;
modfmt->u.macho_info = macho_module_info;
macho_module_info->load_addr = load_addr;
macho_module_info->file_map = fmap;
reset_file_map(&fmap);
if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
macho_info->module->module.SymType = SymDeferred;
else if (!macho_load_debug_info(pcs, macho_info->module))
ret = FALSE;
macho_info->module->format_info[DFI_MACHO]->u.macho_info->in_use = 1;
macho_info->module->format_info[DFI_MACHO]->u.macho_info->is_loader = 0;
TRACE("module = %p\n", macho_info->module);
}
if (macho_info->flags & MACHO_INFO_NAME)
{
WCHAR* ptr;
ptr = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(filename) + 1) * sizeof(WCHAR));
if (ptr)
{
strcpyW(ptr, filename);
macho_info->module_name = ptr;
}
else ret = FALSE;
TRACE("module_name = %p %s\n", macho_info->module_name, debugstr_w(macho_info->module_name));
}
leave:
macho_unmap_file(&fmap);
TRACE(" => %d\n", ret);
return ret;
}
/******************************************************************
* macho_load_file_from_path
* Tries to load a Mach-O file from a set of paths (separated by ':')
*/
static BOOL macho_load_file_from_path(struct process* pcs,
const WCHAR* filename,
unsigned long load_addr,
const char* path,
struct macho_info* macho_info)
{
BOOL ret = FALSE;
WCHAR *s, *t, *fn;
WCHAR* pathW = NULL;
unsigned len;
TRACE("(%p/%p, %s, 0x%08lx, %s, %p)\n", pcs, pcs->handle, debugstr_w(filename), load_addr,
debugstr_a(path), macho_info);
if (!path) return FALSE;
len = MultiByteToWideChar(CP_UNIXCP, 0, path, -1, NULL, 0);
pathW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
if (!pathW) return FALSE;
MultiByteToWideChar(CP_UNIXCP, 0, path, -1, pathW, len);
for (s = pathW; s && *s; s = (t) ? (t+1) : NULL)
{
t = strchrW(s, ':');
if (t) *t = '\0';
fn = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(filename) + 1 + lstrlenW(s) + 1) * sizeof(WCHAR));
if (!fn) break;
strcpyW(fn, s);
strcatW(fn, S_SlashW);
strcatW(fn, filename);
ret = macho_load_file(pcs, fn, load_addr, macho_info);
HeapFree(GetProcessHeap(), 0, fn);
if (ret) break;
s = (t) ? (t+1) : NULL;
}
TRACE(" => %d\n", ret);
HeapFree(GetProcessHeap(), 0, pathW);
return ret;
}
/******************************************************************
* macho_load_file_from_dll_path
*
* Tries to load a Mach-O file from the dll path
*/
static BOOL macho_load_file_from_dll_path(struct process* pcs,
const WCHAR* filename,
unsigned long load_addr,
struct macho_info* macho_info)
{
BOOL ret = FALSE;
unsigned int index = 0;
const char *path;
TRACE("(%p/%p, %s, 0x%08lx, %p)\n", pcs, pcs->handle, debugstr_w(filename), load_addr,
macho_info);
while (!ret && (path = wine_dll_enum_load_path( index++ )))
{
WCHAR *name;
unsigned len;
len = MultiByteToWideChar(CP_UNIXCP, 0, path, -1, NULL, 0);
name = HeapAlloc( GetProcessHeap(), 0,
(len + lstrlenW(filename) + 2) * sizeof(WCHAR) );
if (!name) break;
MultiByteToWideChar(CP_UNIXCP, 0, path, -1, name, len);
strcatW( name, S_SlashW );
strcatW( name, filename );
ret = macho_load_file(pcs, name, load_addr, macho_info);
HeapFree( GetProcessHeap(), 0, name );
}
TRACE(" => %d\n", ret);
return ret;
}
/******************************************************************
* macho_search_and_load_file
*
* Lookup a file in standard Mach-O locations, and if found, load it
*/
static BOOL macho_search_and_load_file(struct process* pcs, const WCHAR* filename,
unsigned long load_addr,
struct macho_info* macho_info)
{
BOOL ret = FALSE;
struct module* module;
static const WCHAR S_libstdcPPW[] = {'l','i','b','s','t','d','c','+','+','\0'};
const WCHAR* p;
TRACE("(%p/%p, %s, 0x%08lx, %p)\n", pcs, pcs->handle, debugstr_w(filename), load_addr,
macho_info);
if (filename == NULL || *filename == '\0') return FALSE;
if ((module = module_is_already_loaded(pcs, filename)))
{
macho_info->module = module;
module->format_info[DFI_MACHO]->u.macho_info->in_use = 1;
return module->module.SymType;
}
if (strstrW(filename, S_libstdcPPW)) return FALSE; /* We know we can't do it */
/* If has no directories, try PATH first. */
if (!strchrW(filename, '/'))
{
ret = macho_load_file_from_path(pcs, filename, load_addr,
getenv("PATH"), macho_info);
}
/* Try DYLD_LIBRARY_PATH, with just the filename (no directories). */
if (!ret)
{
if ((p = strrchrW(filename, '/'))) p++;
else p = filename;
ret = macho_load_file_from_path(pcs, p, load_addr,
getenv("DYLD_LIBRARY_PATH"), macho_info);
}
/* Try the path as given. */
if (!ret)
ret = macho_load_file(pcs, filename, load_addr, macho_info);
/* Try DYLD_FALLBACK_LIBRARY_PATH, with just the filename (no directories). */
if (!ret)
{
const char* fallback = getenv("DYLD_FALLBACK_LIBRARY_PATH");
if (!fallback)
fallback = "/usr/local/lib:/lib:/usr/lib";
ret = macho_load_file_from_path(pcs, p, load_addr, fallback, macho_info);
}
if (!ret && !strchrW(filename, '/'))
ret = macho_load_file_from_dll_path(pcs, filename, load_addr, macho_info);
return ret;
}
/******************************************************************
* macho_enum_modules_internal
*
* Enumerate Mach-O modules from a running process
*/
static BOOL macho_enum_modules_internal(const struct process* pcs,
const WCHAR* main_name,
enum_modules_cb cb, void* user)
{
struct dyld_all_image_infos image_infos;
struct dyld_image_info* info_array = NULL;
unsigned long len;
int i;
char bufstr[256];
WCHAR bufstrW[MAX_PATH];
BOOL ret = FALSE;
TRACE("(%p/%p, %s, %p, %p)\n", pcs, pcs->handle, debugstr_w(main_name), cb,
user);
if (!pcs->dbg_hdr_addr ||
!ReadProcessMemory(pcs->handle, (void*)pcs->dbg_hdr_addr,
&image_infos, sizeof(image_infos), NULL) ||
!image_infos.infoArray)
goto done;
TRACE("Process has %u image infos at %p\n", image_infos.infoArrayCount, image_infos.infoArray);
len = image_infos.infoArrayCount * sizeof(info_array[0]);
info_array = HeapAlloc(GetProcessHeap(), 0, len);
if (!info_array ||
!ReadProcessMemory(pcs->handle, image_infos.infoArray,
info_array, len, NULL))
goto done;
TRACE("... read image infos\n");
for (i = 0; i < image_infos.infoArrayCount; i++)
{
if (info_array[i].imageFilePath != NULL &&
ReadProcessMemory(pcs->handle, info_array[i].imageFilePath, bufstr, sizeof(bufstr), NULL))
{
bufstr[sizeof(bufstr) - 1] = '\0';
TRACE("[%d] image file %s\n", i, debugstr_a(bufstr));
MultiByteToWideChar(CP_UNIXCP, 0, bufstr, -1, bufstrW, ARRAY_SIZE(bufstrW));
if (main_name && !bufstrW[0]) strcpyW(bufstrW, main_name);
if (!cb(bufstrW, (unsigned long)info_array[i].imageLoadAddress, user)) break;
}
}
ret = TRUE;
done:
HeapFree(GetProcessHeap(), 0, info_array);
return ret;
}
struct macho_sync
{
struct process* pcs;
struct macho_info macho_info;
};
static BOOL macho_enum_sync_cb(const WCHAR* name, unsigned long addr, void* user)
{
struct macho_sync* ms = user;
TRACE("(%s, 0x%08lx, %p)\n", debugstr_w(name), addr, user);
macho_search_and_load_file(ms->pcs, name, addr, &ms->macho_info);
return TRUE;
}
/******************************************************************
* macho_synchronize_module_list
*
* Rescans the debuggee's modules list and synchronizes it with
* the one from 'pcs', ie:
* - if a module is in debuggee and not in pcs, it's loaded into pcs
* - if a module is in pcs and not in debuggee, it's unloaded from pcs
*/
BOOL macho_synchronize_module_list(struct process* pcs)
{
struct module* module;
struct macho_sync ms;
TRACE("(%p/%p)\n", pcs, pcs->handle);
for (module = pcs->lmodules; module; module = module->next)
{
if (module->type == DMT_MACHO && !module->is_virtual)
module->format_info[DFI_MACHO]->u.macho_info->in_use = 0;
}
ms.pcs = pcs;
ms.macho_info.flags = MACHO_INFO_MODULE;
if (!macho_enum_modules_internal(pcs, NULL, macho_enum_sync_cb, &ms))
return FALSE;
module = pcs->lmodules;
while (module)
{
if (module->type == DMT_MACHO && !module->is_virtual &&
!module->format_info[DFI_MACHO]->u.macho_info->in_use &&
!module->format_info[DFI_MACHO]->u.macho_info->is_loader)
{
module_remove(pcs, module);
/* restart all over */
module = pcs->lmodules;
}
else module = module->next;
}
return TRUE;
}
/******************************************************************
* macho_search_loader
*
* Lookup in a running Mach-O process the loader, and sets its Mach-O link
* address (for accessing the list of loaded images) in pcs.
* If flags is MACHO_INFO_MODULE, the module for the loader is also
* added as a module into pcs.
*/
static BOOL macho_search_loader(struct process* pcs, struct macho_info* macho_info)
{
WCHAR *loader = get_wine_loader_name(pcs);
BOOL ret = FALSE;
ULONG_PTR dyld_image_info_address;
struct dyld_all_image_infos image_infos;
struct dyld_image_info image_info;
uint32_t len;
char path[PATH_MAX];
BOOL got_path = FALSE;
dyld_image_info_address = get_dyld_image_info_address(pcs);
if (dyld_image_info_address &&
ReadProcessMemory(pcs->handle, (void*)dyld_image_info_address, &image_infos, sizeof(image_infos), NULL) &&
image_infos.infoArray && image_infos.infoArrayCount &&
ReadProcessMemory(pcs->handle, image_infos.infoArray, &image_info, sizeof(image_info), NULL) &&
image_info.imageFilePath)
{
for (len = sizeof(path); len > 0; len /= 2)
{
if (ReadProcessMemory(pcs->handle, image_info.imageFilePath, path, len, NULL))
{
path[len - 1] = 0;
got_path = TRUE;
TRACE("got executable path from target's dyld image info: %s\n", debugstr_a(path));
break;
}
}
}
/* If we couldn't get the executable path from the target process, try our
own. It will almost always be the same. */
if (!got_path)
{
len = sizeof(path);
if (!_NSGetExecutablePath(path, &len))
{
got_path = TRUE;
TRACE("using own executable path: %s\n", debugstr_a(path));
}
}
if (got_path)
{
WCHAR* pathW;
len = MultiByteToWideChar(CP_UNIXCP, 0, path, -1, NULL, 0);
pathW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
if (pathW)
{
MultiByteToWideChar(CP_UNIXCP, 0, path, -1, pathW, len);
ret = macho_load_file(pcs, pathW, 0, macho_info);
HeapFree(GetProcessHeap(), 0, pathW);
}
}
if (!ret)
ret = macho_search_and_load_file(pcs, loader, 0, macho_info);
heap_free(loader);
return ret;
}
/******************************************************************
* macho_read_wine_loader_dbg_info
*
* Try to find a decent wine executable which could have loaded the debuggee
*/
BOOL macho_read_wine_loader_dbg_info(struct process* pcs)
{
struct macho_info macho_info;
TRACE("(%p/%p)\n", pcs, pcs->handle);
macho_info.flags = MACHO_INFO_DEBUG_HEADER | MACHO_INFO_MODULE;
if (!macho_search_loader(pcs, &macho_info)) return FALSE;
macho_info.module->format_info[DFI_MACHO]->u.macho_info->is_loader = 1;
module_set_module(macho_info.module, S_WineLoaderW);
return (pcs->dbg_hdr_addr = macho_info.dbg_hdr_addr) != 0;
}
/******************************************************************
* macho_enum_modules
*
* Enumerates the Mach-O loaded modules from a running target (hProc)
* This function doesn't require that someone has called SymInitialize
* on this very process.
*/
BOOL macho_enum_modules(HANDLE hProc, enum_modules_cb cb, void* user)
{
struct process pcs;
struct macho_info macho_info;
BOOL ret;
TRACE("(%p, %p, %p)\n", hProc, cb, user);
memset(&pcs, 0, sizeof(pcs));
pcs.handle = hProc;
macho_info.flags = MACHO_INFO_DEBUG_HEADER | MACHO_INFO_NAME;
if (!macho_search_loader(&pcs, &macho_info)) return FALSE;
pcs.dbg_hdr_addr = macho_info.dbg_hdr_addr;
ret = macho_enum_modules_internal(&pcs, macho_info.module_name, cb, user);
HeapFree(GetProcessHeap(), 0, (char*)macho_info.module_name);
return ret;
}
struct macho_load
{
struct process* pcs;
struct macho_info macho_info;
const WCHAR* name;
BOOL ret;
};
/******************************************************************
* macho_load_cb
*
* Callback for macho_load_module, used to walk the list of loaded
* modules.
*/
static BOOL macho_load_cb(const WCHAR* name, unsigned long addr, void* user)
{
struct macho_load* ml = user;
const WCHAR* p;
TRACE("(%s, 0x%08lx, %p)\n", debugstr_w(name), addr, user);
/* memcmp is needed for matches when bufstr contains also version information
* ml->name: libc.so, name: libc.so.6.0
*/
p = strrchrW(name, '/');
if (!p++) p = name;
if (!memcmp(p, ml->name, lstrlenW(ml->name) * sizeof(WCHAR)))
{
ml->ret = macho_search_and_load_file(ml->pcs, name, addr, &ml->macho_info);
return FALSE;
}
return TRUE;
}
/******************************************************************
* macho_load_module
*
* Loads a Mach-O module and stores it in process' module list.
* Also, find module real name and load address from
* the real loaded modules list in pcs address space.
*/
struct module* macho_load_module(struct process* pcs, const WCHAR* name, unsigned long addr)
{
struct macho_load ml;
TRACE("(%p/%p, %s, 0x%08lx)\n", pcs, pcs->handle, debugstr_w(name), addr);
ml.macho_info.flags = MACHO_INFO_MODULE;
ml.ret = FALSE;
if (pcs->dbg_hdr_addr) /* we're debugging a live target */
{
ml.pcs = pcs;
/* do only the lookup from the filename, not the path (as we lookup module
* name in the process' loaded module list)
*/
ml.name = strrchrW(name, '/');
if (!ml.name++) ml.name = name;
ml.ret = FALSE;
if (!macho_enum_modules_internal(pcs, NULL, macho_load_cb, &ml))
return NULL;
}
else if (addr)
{
ml.name = name;
ml.ret = macho_search_and_load_file(pcs, ml.name, addr, &ml.macho_info);
}
if (!ml.ret) return NULL;
assert(ml.macho_info.module);
return ml.macho_info.module;
}
#else /* HAVE_MACH_O_LOADER_H */
BOOL macho_find_section(struct image_file_map* ifm, const char* segname, const char* sectname, struct image_section_map* ism)
{
return FALSE;
}
const char* macho_map_section(struct image_section_map* ism)
{
return NULL;
}
void macho_unmap_section(struct image_section_map* ism)
{
}
DWORD_PTR macho_get_map_rva(const struct image_section_map* ism)
{
return 0;
}
unsigned macho_get_map_size(const struct image_section_map* ism)
{
return 0;
}
BOOL macho_synchronize_module_list(struct process* pcs)
{
return FALSE;
}
BOOL macho_fetch_file_info(HANDLE process, const WCHAR* name, unsigned long load_addr, DWORD_PTR* base,
DWORD* size, DWORD* checksum)
{
return FALSE;
}
BOOL macho_read_wine_loader_dbg_info(struct process* pcs)
{
return FALSE;
}
BOOL macho_enum_modules(HANDLE hProc, enum_modules_cb cb, void* user)
{
return FALSE;
}
struct module* macho_load_module(struct process* pcs, const WCHAR* name, unsigned long addr)
{
return NULL;
}
BOOL macho_load_debug_info(struct process *pcs, struct module* module)
{
return FALSE;
}
#endif /* HAVE_MACH_O_LOADER_H */
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