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wine/dlls/dbghelp/macho_module.c
Eric Pouech 790a2852aa dbghelp: Use addr_range for storing symt_function address and size. 
Signed-off-by: Eric Pouech <eric.pouech@gmail.com>
2022-11-01 17:53:57 +01:00

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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 <stdio.h>
#include <assert.h>
#include <stdarg.h>
#include <errno.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "dbghelp_private.h"
#include "image_private.h"
#include "winternl.h"
#include "winioctl.h"
#define WINE_MOUNTMGR_EXTENSIONS
#include "ddk/mountmgr.h"
#include "wine/debug.h"
#include "wine/heap.h"
struct dyld_image_info32
{
UINT32 imageLoadAddress; /* const struct mach_header* */
UINT32 imageFilePath; /* const char* */
UINT32 imageFileModDate; /* uintptr_t */
};
struct dyld_all_image_infos32
{
UINT32 version;
UINT32 infoArrayCount;
UINT32 infoArray; /* const struct dyld_image_info* */
};
struct dyld_image_info64
{
UINT64 imageLoadAddress; /* const struct mach_header* */
UINT64 imageFilePath; /* const char* */
UINT64 imageFileModDate; /* uintptr_t */
};
struct dyld_all_image_infos64
{
UINT32 version;
UINT32 infoArrayCount;
UINT64 infoArray; /* const struct dyld_image_info* */
};
union wine_image_info {
struct dyld_image_info32 info32;
struct dyld_image_info64 info64;
};
union wine_all_image_infos {
struct dyld_all_image_infos32 infos32;
struct dyld_all_image_infos64 infos64;
};
struct macho_header
{
UINT32 magic; /* mach magic number identifier */
UINT32 cputype; /* cpu specifier */
UINT32 cpusubtype; /* machine specifier */
UINT32 filetype; /* type of file */
UINT32 ncmds; /* number of load commands */
UINT32 sizeofcmds; /* the size of all the load commands */
UINT32 flags; /* flags */
UINT32 reserved; /* reserved */
};
struct macho_segment_command
{
UINT32 cmd; /* LC_SEGMENT_64 */
UINT32 cmdsize; /* includes sizeof section_64 structs */
char segname[16]; /* segment name */
UINT64 vmaddr; /* memory address of this segment */
UINT64 vmsize; /* memory size of this segment */
UINT64 fileoff; /* file offset of this segment */
UINT64 filesize; /* amount to map from the file */
UINT32 maxprot; /* maximum VM protection */
UINT32 initprot; /* initial VM protection */
UINT32 nsects; /* number of sections in segment */
UINT32 flags; /* flags */
};
struct macho_segment_command32
{
UINT32 cmd; /* LC_SEGMENT */
UINT32 cmdsize; /* includes sizeof section structs */
char segname[16]; /* segment name */
UINT32 vmaddr; /* memory address of this segment */
UINT32 vmsize; /* memory size of this segment */
UINT32 fileoff; /* file offset of this segment */
UINT32 filesize; /* amount to map from the file */
UINT32 maxprot; /* maximum VM protection */
UINT32 initprot; /* initial VM protection */
UINT32 nsects; /* number of sections in segment */
UINT32 flags; /* flags */
};
struct macho_symtab_command
{
UINT32 cmd; /* LC_SYMTAB */
UINT32 cmdsize; /* sizeof(struct symtab_command) */
UINT32 symoff; /* symbol table offset */
UINT32 nsyms; /* number of symbol table entries */
UINT32 stroff; /* string table offset */
UINT32 strsize; /* string table size in bytes */
};
#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 MACHO_FAT_MAGIC 0xcafebabe
#define MACHO_MH_MAGIC_32 0xfeedface
#define MACHO_MH_MAGIC_64 0xfeedfacf
#define MACHO_CPU_TYPE_X86 0x00000007
#define MACHO_CPU_TYPE_X86_64 0x01000007
#define MACHO_MH_EXECUTE 0x2
#define MACHO_MH_DYLIB 0x6
#define MACHO_MH_DYLINKER 0x7
#define MACHO_MH_BUNDLE 0x8
#define MACHO_MH_DSYM 0xa
#define MACHO_LC_SEGMENT 0x01
#define MACHO_LC_SYMTAB 0x02
#define MACHO_LC_SEGMENT_64 0x19
#define MACHO_LC_UUID 0x1b
#define MACHO_SECTION_TYPE 0x000000ff
#define MACHO_S_ATTR_PURE_INSTRUCTIONS 0x80000000
#define MACHO_S_ATTR_SOME_INSTRUCTIONS 0x00000400
#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;
ULONG_PTR load_addr;
unsigned short in_use : 1,
is_loader : 1;
};
struct section_info
{
BOOL split_segs;
unsigned int section_index;
};
#define MACHO_INFO_MODULE 0x0001
#define MACHO_INFO_NAME 0x0002
struct macho_info
{
unsigned flags; /* IN one (or several) of the MACHO_INFO constants */
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 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, ULONG_PTR offset,
ULONG_PTR len, ULONG_PTR* out_aligned_offset,
ULONG_PTR* out_aligned_end, ULONG_PTR* out_misalign)
{
ULONG_PTR pagemask;
ULONG_PTR file_offset, misalign;
pagemask = sysinfo.dwAllocationGranularity - 1;
file_offset = fmap->arch_offset + offset;
misalign = file_offset & pagemask;
*out_aligned_offset = file_offset - misalign;
*out_aligned_end = file_offset + len;
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, ULONG_PTR offset, ULONG_PTR len,
const char** base)
{
ULONG_PTR misalign, aligned_offset, aligned_map_end;
const void* aligned_ptr;
HANDLE mapping;
TRACE("(%p/%p, 0x%08Ix, 0x%08Ix)\n", fmap, fmap->handle, offset, len);
macho_calc_range(fmap, offset, len, &aligned_offset, &aligned_map_end, &misalign);
if (!(mapping = CreateFileMappingW(fmap->handle, NULL, PAGE_READONLY, 0, 0, NULL)))
{
ERR("map creation %p failed %lu size %Iu\n", fmap->handle, GetLastError(), aligned_map_end);
return IMAGE_NO_MAP;
}
aligned_ptr = MapViewOfFile(mapping, FILE_MAP_READ, 0, aligned_offset, aligned_map_end - aligned_offset);
CloseHandle(mapping);
if (!aligned_ptr)
{
ERR("map failed %lu\n", GetLastError());
return IMAGE_NO_MAP;
}
TRACE("Mapped (0x%08Ix - 0x%08Ix) to %p\n", aligned_offset, aligned_map_end, aligned_ptr);
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,
ULONG_PTR offset, ULONG_PTR len)
{
TRACE("(%p, %p, %p/%p, 0x%08Ix, 0x%08Ix)\n", base, mapped, fmap, fmap->handle, offset, len);
if ((mapped && *mapped != IMAGE_NO_MAP) || (base && *base != IMAGE_NO_MAP))
{
ULONG_PTR misalign, aligned_offset, aligned_map_end;
void* aligned_ptr;
macho_calc_range(fmap, offset, len, &aligned_offset, &aligned_map_end, &misalign);
if (mapped)
aligned_ptr = (char*)*mapped - misalign;
else
aligned_ptr = (void*)*base;
if (!UnmapViewOfFile(aligned_ptr))
WARN("Couldn't unmap the range\n");
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,
ULONG_PTR offset1, ULONG_PTR len1,
ULONG_PTR offset2, ULONG_PTR len2,
const void** mapped1, const void** mapped2)
{
ULONG_PTR aligned_offset1, aligned_map_end1;
ULONG_PTR aligned_offset2, aligned_map_end2;
TRACE("(%p/%p, 0x%08Ix, 0x%08Ix, 0x%08Ix, 0x%08Ix, %p, %p)\n", fmap, fmap->handle,
offset1, len1, offset2, len2, mapped1, mapped2);
macho_calc_range(fmap, offset1, len1, &aligned_offset1, &aligned_map_end1, NULL);
macho_calc_range(fmap, offset2, len2, &aligned_offset2, &aligned_map_end2, 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,
ULONG_PTR offset1, ULONG_PTR len1,
ULONG_PTR offset2, ULONG_PTR len2,
const void** mapped1, const void** mapped2)
{
ULONG_PTR aligned_offset1, aligned_map_end1;
ULONG_PTR aligned_offset2, aligned_map_end2;
TRACE("(%p/%p, 0x%08Ix, 0x%08Ix, 0x%08Ix, 0x%08Ix, %p/%p, %p/%p)\n", fmap, fmap->handle,
offset1, len1, offset2, len2, mapped1, *mapped1, mapped2, *mapped2);
macho_calc_range(fmap, offset1, len1, &aligned_offset1, &aligned_map_end1, NULL);
macho_calc_range(fmap, offset2, len2, &aligned_offset2, &aligned_map_end2, 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
*/
static BOOL macho_find_segment_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;
}
static BOOL macho_find_section(struct image_file_map* ifm, const char* sectname, struct image_section_map* ism)
{
return macho_find_segment_section(ifm, NULL, sectname, ism);
}
/******************************************************************
* 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;
}
static const struct image_file_map_ops macho_file_map_ops =
{
macho_map_section,
macho_unmap_section,
macho_find_section,
macho_get_map_rva,
macho_get_map_size,
macho_unmap_file,
};
/******************************************************************
* macho_map_load_commands
*
* Maps the load commands from a Mach-O file into memory
*/
static const struct macho_load_command* macho_map_load_commands(struct macho_file_map* fmap)
{
if (fmap->load_commands == IMAGE_NO_MAP)
{
fmap->load_commands = (const struct macho_load_command*) macho_map_range(
fmap, fmap->header_size, fmap->commands_size, 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->commands_size);
}
}
/******************************************************************
* macho_next_load_command
*
* Advance to the next load command
*/
static const struct macho_load_command* macho_next_load_command(const struct macho_load_command* lc)
{
return (const struct macho_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 macho_load_command*, void*),
void* user)
{
struct macho_file_map* fmap = &ifm->u.macho;
const struct macho_load_command* lc;
int i;
int count = 0;
TRACE("(%p/%p, %u, %p, %p)\n", fmap, fmap->handle, cmd, cb, user);
if ((lc = macho_map_load_commands(fmap)) == IMAGE_NO_MAP) return -1;
TRACE("%u total commands\n", fmap->commands_count);
for (i = 0; i < fmap->commands_count; 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 macho_load_command* lc, void* user)
{
char segname[16];
size_t nsects;
if (ifm->addr_size == 32)
{
const struct macho_segment_command32 *sc = (const struct macho_segment_command32 *)lc;
memcpy(segname, sc->segname, sizeof(segname));
nsects = sc->nsects;
}
else
{
const struct macho_segment_command *sc = (const struct macho_segment_command *)lc;
memcpy(segname, sc->segname, sizeof(segname));
nsects = sc->nsects;
}
TRACE("(%p/%p, %p, %p) segment %s\n", ifm, ifm->u.macho.handle, 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 macho_load_command* lc, void* user)
{
struct macho_file_map* fmap = &ifm->u.macho;
struct section_info* info = user;
BOOL ignore;
int i;
ULONG_PTR tmp, page_mask = sysinfo.dwPageSize - 1;
UINT64 vmaddr, vmsize;
char segname[16];
size_t nsects;
const void *sections;
if (ifm->addr_size == 32)
{
const struct macho_segment_command32 *sc = (const struct macho_segment_command32 *)lc;
vmaddr = sc->vmaddr;
vmsize = sc->vmsize;
memcpy(segname, sc->segname, sizeof(segname));
nsects = sc->nsects;
sections = (const void *)(sc + 1);
}
else
{
const struct macho_segment_command *sc = (const struct macho_segment_command *)lc;
vmaddr = sc->vmaddr;
vmsize = sc->vmsize;
memcpy(segname, sc->segname, sizeof(segname));
nsects = sc->nsects;
sections = (const void *)(sc + 1);
}
TRACE("(%p/%p, %p, %p) before: 0x%08Ix - 0x%08Ix\n", fmap, fmap->handle, lc, user,
(ULONG_PTR)fmap->segs_start, (ULONG_PTR)fmap->segs_size);
TRACE("Segment command vm: 0x%08Ix - 0x%08Ix\n", (ULONG_PTR)vmaddr,
(ULONG_PTR)(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, "__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%08Ix - 0x%08Ix\n", (ULONG_PTR)fmap->segs_start, (ULONG_PTR)fmap->segs_size);
}
for (i = 0; i < nsects; i++)
{
if (ifm->addr_size == 32)
{
const struct macho_section32 *section = &((const struct macho_section32 *)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 macho_section *)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 macho_load_command* lc, void* user)
{
ifm->u.macho.uuid = (const struct macho_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->handle = INVALID_HANDLE_VALUE;
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 macho_header mach_header;
int i;
WCHAR* filename;
struct section_info info;
BOOL ret = FALSE;
UINT32 target_cpu = (pcs->is_64bit) ? MACHO_CPU_TYPE_X86_64 : MACHO_CPU_TYPE_X86;
UINT32 target_magic = (pcs->is_64bit) ? MACHO_MH_MAGIC_64 : MACHO_MH_MAGIC_32;
UINT32 target_cmd = (pcs->is_64bit) ? MACHO_LC_SEGMENT_64 : MACHO_LC_SEGMENT;
DWORD bytes_read;
struct
{
UINT32 magic; /* FAT_MAGIC or FAT_MAGIC_64 */
UINT32 nfat_arch; /* number of structs that follow */
} fat_header;
TRACE("(%s, %p)\n", debugstr_w(filenameW), fmap);
reset_file_map(ifm);
ifm->modtype = DMT_MACHO;
ifm->ops = &macho_file_map_ops;
ifm->alternate = NULL;
ifm->addr_size = (pcs->is_64bit) ? 64 : 32;
fmap->header_size = (pcs->is_64bit) ? sizeof(struct macho_header) : FIELD_OFFSET(struct macho_header, reserved);
if (!(filename = get_dos_file_name(filenameW))) return FALSE;
/* Now open the file, so that we can map it. */
fmap->handle = CreateFileW(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
if (fmap->handle == INVALID_HANDLE_VALUE)
{
TRACE("failed to open file %s: %d\n", debugstr_w(filename), errno);
goto done;
}
if (!ReadFile(fmap->handle, &fat_header, sizeof(fat_header), &bytes_read, NULL) || bytes_read != sizeof(fat_header))
{
TRACE("failed to read fat header: %lu\n", GetLastError());
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) == MACHO_FAT_MAGIC)
{
int narch = swap_ulong_be_to_host(fat_header.nfat_arch);
for (i = 0; i < narch; i++)
{
struct
{
UINT32 cputype; /* cpu specifier (int) */
UINT32 cpusubtype; /* machine specifier (int) */
UINT32 offset; /* file offset to this object file */
UINT32 size; /* size of this object file */
UINT32 align; /* alignment as a power of 2 */
} fat_arch;
if (!ReadFile(fmap->handle, &fat_arch, sizeof(fat_arch), &bytes_read, NULL) || bytes_read != 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. */
SetFilePointer(fmap->handle, fmap->arch_offset, 0, FILE_BEGIN);
if (!ReadFile(fmap->handle, &mach_header, fmap->header_size, &bytes_read, NULL)
|| bytes_read != fmap->header_size)
goto done;
TRACE("... got possible Mach header\n");
/* and check for a Mach-O header */
if (mach_header.magic != target_magic || mach_header.cputype != target_cpu) goto done;
fmap->commands_size = mach_header.sizeofcmds;
fmap->commands_count = mach_header.ncmds;
/* Make sure the file type is one of the ones we expect. */
switch (mach_header.filetype)
{
case MACHO_MH_EXECUTE:
case MACHO_MH_DYLIB:
case MACHO_MH_DYLINKER:
case MACHO_MH_BUNDLE:
case MACHO_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%08Ix, segs_size: 0x%08Ix\n", (ULONG_PTR)fmap->segs_start,
(ULONG_PTR)fmap->segs_size);
if (macho_enum_load_commands(ifm, MACHO_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/%p)\n", ifm, ifm->u.macho.handle);
cursor = ifm;
while (cursor)
{
struct image_file_map* next;
if (ifm->u.macho.handle != INVALID_HANDLE_VALUE)
{
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);
CloseHandle(ifm->u.macho.handle);
ifm->u.macho.handle = INVALID_HANDLE_VALUE;
}
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/%p, %u)\n", fmap, fmap->handle, 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 & MACHO_SECTION_TYPE) &&
(fmap->sect[sectidx].section.flags & (MACHO_S_ATTR_PURE_INSTRUCTIONS | MACHO_S_ATTR_SOME_INSTRUCTIONS)));
TRACE("-> %d\n", ret);
return ret;
}
struct symtab_elt
{
struct hash_table_elt ht_elt;
struct symt_compiland* compiland;
ULONG_PTR 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, ULONG_PTR load_offset,
const char* name, ULONG_PTR 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%08Ix, %s, 0x%08Ix, %d, %d, %u, %p, %p/%p/%p)\n", module, load_offset,
debugstr_a(name), offset, is_public, is_global, sectidx,
compiland, mdi, mdi->fmap, mdi->fmap->handle);
/* 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 macho_load_command* lc, void* user)
{
struct macho_file_map* fmap = &ifm->u.macho;
const struct macho_symtab_command* sc = (const struct macho_symtab_command*)lc;
struct macho_debug_info* mdi = user;
const char* stabstr;
int ret = 0;
size_t stabsize = (ifm->addr_size == 32) ? sizeof(struct stab_nlist) : sizeof(struct macho64_nlist);
const char *stab;
TRACE("(%p/%p, %p, %p) %u syms at 0x%08x, strings 0x%08x - 0x%08x\n", fmap, fmap->handle, 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->ranges[0].low == module->format_info[DFI_MACHO]->u.macho_info->load_addr)
{
TRACE("Adjusting function %p/%s!%s from %#I64x to %#Ix\n", func,
debugstr_w(module->modulename), sym->hash_elt.name,
func->ranges[0].low, ste->addr);
func->ranges[0].high += ste->addr - func->ranges[0].low;
func->ranges[0].low = ste->addr;
adjusted = TRUE;
}
if (func->ranges[0].low == 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%08Ix to 0x%08Ix\n",
data, debugstr_w(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->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<%08Ix> %s<%I64x-%I64x>\n",
debugstr_w(module->modulename),
ste->ht_elt.name, ste->addr,
sym->hash_elt.name,
addr, 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;
}
static const WCHAR dsym_subpath[] = L"'\\Contents\\Resources\\DWARF\\";
static WCHAR *query_dsym(const GUID *uuid, const WCHAR *filename)
{
WCHAR *dos_name = NULL, *ret = NULL;
ULONG size = 1024;
HANDLE mgr;
mgr = CreateFileW(MOUNTMGR_DOS_DEVICE_NAME, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
OPEN_EXISTING, 0, 0);
if (mgr == INVALID_HANDLE_VALUE) return NULL;
for (;;)
{
char *buf = malloc( size );
if (DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_SYMBOL_FILE, (void*)uuid, sizeof(*uuid),
buf, size, NULL, NULL ))
{
dos_name = wine_get_dos_file_name( buf );
free( buf );
break;
}
free( buf );
if (GetLastError() != ERROR_MORE_DATA) break;
size *= 2;
}
CloseHandle(mgr);
if (!dos_name) return NULL;
if ((ret = HeapAlloc( GetProcessHeap(), 0,
sizeof(dsym_subpath) + (lstrlenW(dos_name) + lstrlenW(filename)) * sizeof(WCHAR))))
{
wcscpy( ret, dos_name );
wcscat( ret, dsym_subpath );
wcscat( ret, filename );
}
HeapFree( GetProcessHeap(), 0, dos_name );
return ret;
}
/******************************************************************
* 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)
{
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;
/* 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;
p = file_name(module->module.LoadedImageName);
len = lstrlenW(module->module.LoadedImageName) + lstrlenW(L".dSYM") + lstrlenW(dsym_subpath) + lstrlenW(p) + 1;
path = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
if (!path)
return;
lstrcpyW(path, module->module.LoadedImageName);
lstrcatW(path, L".dSYM");
lstrcatW(path, dsym_subpath);
lstrcatW(path, p);
if (try_dsym(pcs, path, fmap))
goto found;
lstrcpyW(path + lstrlenW(module->module.LoadedImageName), L".dwarf");
if (try_dsym(pcs, path, fmap))
goto found;
HeapFree(GetProcessHeap(), 0, path);
if ((path = query_dsym((const GUID *)fmap->uuid->uuid, p))) try_dsym(pcs, path, fmap);
found:
HeapFree(GetProcessHeap(), 0, path);
}
/******************************************************************
* 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(struct process* process, ULONG_PTR load_addr)
{
BOOL split_segs = FALSE;
if (load_addr)
{
UINT32 target_cpu = (process->is_64bit) ? MACHO_CPU_TYPE_X86_64 : MACHO_CPU_TYPE_X86;
UINT32 target_magic = (process->is_64bit) ? MACHO_MH_MAGIC_64 : MACHO_MH_MAGIC_32;
struct macho_header header;
if (read_process_memory(process, load_addr, &header, FIELD_OFFSET(struct macho_header, reserved)) &&
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.
*/
static 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/%p)\n", module, fmap, fmap->handle);
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, MACHO_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, MACHO_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
*/
static BOOL macho_fetch_file_info(struct process* process, const WCHAR* name, ULONG_PTR load_addr, DWORD_PTR* base,
DWORD* size, DWORD* checksum)
{
struct image_file_map fmap;
BOOL split_segs;
TRACE("(%s, %p, %p, %p)\n", debugstr_w(name), base, size, checksum);
split_segs = image_uses_split_segs(process, load_addr);
if (!macho_map_file(process, 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.handle);
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);
}
/******************************************************************
* 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,
ULONG_PTR load_addr, struct macho_info* macho_info)
{
BOOL ret = TRUE;
BOOL split_segs;
struct image_file_map fmap;
TRACE("(%p/%p, %s, 0x%08Ix, %p/0x%08x)\n", pcs, pcs->handle, debugstr_w(filename),
load_addr, macho_info, macho_info->flags);
split_segs = image_uses_split_segs(pcs, load_addr);
if (!macho_map_file(pcs, filename, split_segs, &fmap)) return FALSE;
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.handle),
IMAGE_FILE_MACHINE_UNKNOWN);
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);
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)
{
lstrcpyW(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;
}
struct macho_load_params
{
struct process *process;
ULONG_PTR load_addr;
struct macho_info *macho_info;
};
static BOOL macho_load_file_cb(void *param, HANDLE handle, const WCHAR *filename)
{
struct macho_load_params *macho_load = param;
return macho_load_file(macho_load->process, filename, macho_load->load_addr, macho_load->macho_info);
}
/******************************************************************
* 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,
ULONG_PTR load_addr,
struct macho_info* macho_info)
{
BOOL ret = FALSE;
struct module* module;
const WCHAR* p;
struct macho_load_params load_params;
TRACE("(%p/%p, %s, 0x%08Ix, %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 (wcsstr(filename, L"libstdc++")) return FALSE; /* We know we can't do it */
load_params.process = pcs;
load_params.load_addr = load_addr;
load_params.macho_info = macho_info;
/* Try DYLD_LIBRARY_PATH first. */
p = file_name(filename);
ret = search_unix_path(p, process_getenv(pcs, L"DYLD_LIBRARY_PATH"), macho_load_file_cb, &load_params);
/* 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 WCHAR* fallback = process_getenv(pcs, L"DYLD_FALLBACK_LIBRARY_PATH");
if (!fallback)
fallback = L"/usr/local/lib:/lib:/usr/lib";
ret = search_unix_path(p, fallback, macho_load_file_cb, &load_params);
}
if (!ret && p == filename)
ret = search_dll_path(pcs, filename, macho_load_file_cb, &load_params);
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)
{
union wine_all_image_infos image_infos;
union wine_image_info* info_array = NULL;
ULONG_PTR 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->is_64bit)
len = sizeof(image_infos.infos64);
else
len = sizeof(image_infos.infos32);
if (!pcs->dbg_hdr_addr ||
!read_process_memory(pcs, pcs->dbg_hdr_addr, &image_infos, len))
goto done;
if (!pcs->is_64bit)
{
struct dyld_all_image_infos32 temp = image_infos.infos32;
image_infos.infos64.infoArrayCount = temp.infoArrayCount;
image_infos.infos64.infoArray = temp.infoArray;
}
if (!image_infos.infos64.infoArray)
goto done;
TRACE("Process has %u image infos at %I64x\n", image_infos.infos64.infoArrayCount, image_infos.infos64.infoArray);
if (pcs->is_64bit)
len = sizeof(info_array->info64);
else
len = sizeof(info_array->info32);
len *= image_infos.infos64.infoArrayCount;
info_array = HeapAlloc(GetProcessHeap(), 0, len);
if (!info_array ||
!read_process_memory(pcs, image_infos.infos64.infoArray, info_array, len))
goto done;
TRACE("... read image infos\n");
for (i = 0; i < image_infos.infos64.infoArrayCount; i++)
{
struct dyld_image_info64 info;
if (pcs->is_64bit)
info = info_array[i].info64;
else
{
struct dyld_image_info32 *info32 = &info_array->info32 + i;
info.imageLoadAddress = info32->imageLoadAddress;
info.imageFilePath = info32->imageFilePath;
}
if (info.imageFilePath &&
read_process_memory(pcs, info.imageFilePath, bufstr, sizeof(bufstr)))
{
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]) lstrcpyW(bufstrW, main_name);
if (!cb(bufstrW, info.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, ULONG_PTR addr, void* user)
{
struct macho_sync* ms = user;
TRACE("(%s, 0x%08Ix, %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
*/
static 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_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.
*/
static BOOL macho_enum_modules(struct process* process, enum_modules_cb cb, void* user)
{
struct macho_info macho_info;
BOOL ret;
TRACE("(%p, %p, %p)\n", process->handle, cb, user);
macho_info.flags = MACHO_INFO_NAME;
macho_info.module_name = NULL;
ret = macho_enum_modules_internal(process, 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, ULONG_PTR addr, void* user)
{
struct macho_load* ml = user;
const WCHAR* p;
TRACE("(%s, 0x%08Ix, %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 = file_name(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.
*/
static struct module* macho_load_module(struct process* pcs, const WCHAR* name, ULONG_PTR addr)
{
struct macho_load ml;
TRACE("(%p/%p, %s, 0x%08Ix)\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 = file_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;
}
/******************************************************************
* 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)
{
BOOL ret = FALSE;
union wine_all_image_infos image_infos;
union wine_image_info image_info;
unsigned int len;
char path[1024];
BOOL got_path = FALSE;
if (pcs->is_64bit)
len = sizeof(image_infos.infos64);
else
len = sizeof(image_infos.infos32);
if (read_process_memory(pcs, pcs->dbg_hdr_addr, &image_infos, len))
{
if (pcs->is_64bit)
len = sizeof(image_info.info64);
else
{
struct dyld_all_image_infos32 temp = image_infos.infos32;
image_infos.infos64.infoArrayCount = temp.infoArrayCount;
image_infos.infos64.infoArray = temp.infoArray;
len = sizeof(image_info.info32);
}
if (image_infos.infos64.infoArray && image_infos.infos64.infoArrayCount &&
read_process_memory(pcs, image_infos.infos64.infoArray, &image_info, len))
{
if (!pcs->is_64bit)
{
struct dyld_image_info32 temp = image_info.info32;
image_info.info64.imageLoadAddress = temp.imageLoadAddress;
image_info.info64.imageFilePath = temp.imageFilePath;
}
for (len = sizeof(path); image_info.info64.imageFilePath && len > 0; len /= 2)
{
if (read_process_memory(pcs, image_info.info64.imageFilePath, path, len))
{
path[len - 1] = 0;
got_path = TRUE;
TRACE("got executable path from target's dyld image info: %s\n", debugstr_a(path));
break;
}
}
}
}
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)
{
WCHAR* loader = get_wine_loader_name(pcs);
if (loader)
{
ret = macho_search_and_load_file(pcs, loader, 0, macho_info);
HeapFree(GetProcessHeap(), 0, loader);
}
}
return ret;
}
static const struct loader_ops macho_loader_ops =
{
macho_synchronize_module_list,
macho_load_module,
macho_load_debug_info,
macho_enum_modules,
macho_fetch_file_info,
};
/******************************************************************
* 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, ULONG_PTR addr)
{
struct macho_info macho_info;
TRACE("(%p/%p)\n", pcs, pcs->handle);
pcs->dbg_hdr_addr = addr;
macho_info.flags = 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);
pcs->loader = &macho_loader_ops;
TRACE("Found macho debug header %#Ix\n", pcs->dbg_hdr_addr);
return TRUE;
}
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