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Sweden-Number/dlls/dbghelp/macho_module.c

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dbghelp: Add support for debugging Mach-O modules.
2009-03-13 17:48:00 +01:00
/*
* 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"
#include "dbghelp_private.h"
#ifdef __MACH__
#include <assert.h>
#include <stdarg.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
#include <mach-o/fat.h>
#include <mach-o/loader.h>
#include <mach-o/nlist.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
#include "winternl.h"
#include "wine/library.h"
#include "wine/debug.h"
#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);
struct macho_module_info
{
unsigned long load_addr;
unsigned short in_use : 1,
is_loader : 1;
};
#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) */
};
/* structure holding information while handling a Mach-O image */
#define BITS_PER_ULONG (sizeof(ULONG) * 8)
#define ULONGS_FOR_BITS(nbits) (((nbits) + BITS_PER_ULONG - 1) / BITS_PER_ULONG)
struct macho_file_map
{
/* A copy of the Mach-O header for an individual architecture. */
struct mach_header mach_header;
/* The mapped load commands. */
const struct load_command* load_commands;
/* The portion of the file which is this architecture. mach_header was
* read from arch_offset. */
unsigned arch_offset;
unsigned arch_size;
/* The range of address space covered by all segments. */
size_t segs_start;
size_t segs_size;
/* Map of which sections contain code. Sections are accessed using 1-based
* index. Bit 0 of this bitset indicates if the bitset has been initialized. */
RTL_BITMAP sect_is_code;
ULONG sect_is_code_buff[ULONGS_FOR_BITS(MAX_SECT + 1)];
/* The file. */
int fd;
};
static void macho_unmap_file(struct macho_file_map* fmap);
/******************************************************************
* 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 offset,
unsigned len, unsigned* out_aligned_offset,
unsigned* out_aligned_end, unsigned* out_aligned_len,
unsigned* out_misalign)
{
unsigned pagemask = getpagesize() - 1;
unsigned 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 offset, unsigned len)
{
unsigned misalign, aligned_offset, aligned_map_end, map_size;
const void* aligned_ptr;
TRACE("(%p/%d, 0x%08x, 0x%08x)\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%08x - 0x%08x) to %p\n", aligned_offset, aligned_map_end, aligned_ptr);
if (aligned_ptr == MAP_FAILED) return MACHO_NO_MAP;
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 void** mapped, const struct macho_file_map* fmap,
unsigned offset, unsigned len)
{
TRACE("(%p, %p/%d, 0x%08x, 0x%08x)\n", mapped, fmap, fmap->fd, offset, len);
if (mapped && *mapped != MACHO_NO_MAP)
{
unsigned 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);
aligned_ptr = (char*)*mapped - misalign;
if (munmap(aligned_ptr, map_size) < 0)
WARN("Couldn't unmap the range\n");
TRACE("Unmapped (0x%08x - 0x%08x) from %p - %p\n", aligned_offset, aligned_map_end, aligned_ptr, (char*)aligned_ptr + map_size);
*mapped = MACHO_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 offset1, unsigned len1,
unsigned offset2, unsigned len2,
const void** mapped1, const void** mapped2)
{
unsigned aligned_offset1, aligned_map_end1;
unsigned aligned_offset2, aligned_map_end2;
TRACE("(%p/%d, 0x%08x, 0x%08x, 0x%08x, 0x%08x, %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);
if (*mapped1 != MACHO_NO_MAP)
{
*mapped2 = macho_map_range(fmap, offset2, len2);
if (*mapped2 == MACHO_NO_MAP)
macho_unmap_range(mapped1, fmap, offset1, len1);
}
}
else
{
if (offset1 < offset2)
{
*mapped1 = macho_map_range(fmap, offset1, offset2 + len2 - offset1);
if (*mapped1 != MACHO_NO_MAP)
*mapped2 = (const char*)*mapped1 + offset2 - offset1;
}
else
{
*mapped2 = macho_map_range(fmap, offset2, offset1 + len1 - offset2);
if (*mapped2 != MACHO_NO_MAP)
*mapped1 = (const char*)*mapped2 + offset1 - offset2;
}
}
TRACE(" => %p, %p\n", *mapped1, *mapped2);
return (*mapped1 != MACHO_NO_MAP) && (*mapped2 != MACHO_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 offset1, unsigned len1,
unsigned offset2, unsigned len2,
const void** mapped1, const void** mapped2)
{
unsigned aligned_offset1, aligned_map_end1;
unsigned aligned_offset2, aligned_map_end2;
TRACE("(%p/%d, 0x%08x, 0x%08x, 0x%08x, 0x%08x, %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(mapped1, fmap, offset1, len1);
macho_unmap_range(mapped2, fmap, offset2, len2);
}
else
{
if (offset1 < offset2)
{
macho_unmap_range(mapped1, fmap, offset1, offset2 + len2 - offset1);
*mapped2 = MACHO_NO_MAP;
}
else
{
macho_unmap_range(mapped2, fmap, offset2, offset1 + len1 - offset2);
*mapped1 = MACHO_NO_MAP;
}
}
}
/******************************************************************
* 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 == MACHO_NO_MAP)
{
fmap->load_commands = (const struct load_command*) macho_map_range(
fmap, sizeof(fmap->mach_header), fmap->mach_header.sizeofcmds);
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 != MACHO_NO_MAP)
{
TRACE("Unmapping load commands: %p\n", fmap->load_commands);
macho_unmap_range((const void**)&fmap->load_commands, fmap,
sizeof(fmap->mach_header), 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 macho_file_map* fmap, unsigned cmd,
int (*cb)(struct macho_file_map*, const struct load_command*, void*),
void* user)
{
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)) == MACHO_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(fmap, 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_accum_segs_range
*
* Callback for macho_enum_load_commands. Accumulates the address
* range covered by the segments of a Mach-O file. All commands
* are expected to be of LC_SEGMENT type.
*/
static int macho_accum_segs_range(struct macho_file_map* fmap,
const struct load_command* lc, void* user)
{
const struct segment_command* sc = (const struct segment_command*)lc;
unsigned tmp, page_mask = getpagesize() - 1;
TRACE("(%p/%d, %p, %p) before: 0x%08x - 0x%08x\n", fmap, fmap->fd, lc, user,
(unsigned)fmap->segs_start, (unsigned)fmap->segs_size);
TRACE("Segment command vm: 0x%08x - 0x%08x\n", (unsigned)sc->vmaddr,
(unsigned)sc->vmaddr + sc->vmsize);
dbghelp: Fix detection of special Wine segments.
2009-06-25 11:45:08 +02:00
if (!strncmp(sc->segname, "WINE_", 5))
dbghelp: Add support for debugging Mach-O modules.
2009-03-13 17:48:00 +01:00
{
TRACE("Ignoring special Wine segment %s\n", debugstr_an(sc->segname, sizeof(sc->segname)));
return 0;
}
/* If this segment starts before previously-known earliest, record
* new earliest. */
if (sc->vmaddr < fmap->segs_start)
fmap->segs_start = sc->vmaddr;
/* If this segment extends beyond previously-known furthest, record
* new furthest. */
tmp = (sc->vmaddr + sc->vmsize + page_mask) & ~page_mask;
if (fmap->segs_size < tmp) fmap->segs_size = tmp;
TRACE("after: 0x%08x - 0x%08x\n", (unsigned)fmap->segs_start, (unsigned)fmap->segs_size);
return 0;
}
/******************************************************************
* macho_map_file
*
* Maps a Mach-O file into memory (and checks it's a real Mach-O file)
*/
static BOOL macho_map_file(const WCHAR* filenameW, struct macho_file_map* fmap)
{
struct fat_header fat_header;
struct stat statbuf;
int i;
char* filename;
unsigned len;
BOOL ret = FALSE;
TRACE("(%s, %p)\n", debugstr_w(filenameW), fmap);
fmap->fd = -1;
fmap->load_commands = MACHO_NO_MAP;
RtlInitializeBitMap(&fmap->sect_is_code, fmap->sect_is_code_buff, MAX_SECT + 1);
len = WideCharToMultiByte(CP_UNIXCP, 0, filenameW, -1, NULL, 0, NULL, NULL);
if (!(filename = HeapAlloc(GetProcessHeap(), 0, len))) 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)) goto done;
/* Now open the file, so that we can mmap() it. */
if ((fmap->fd = open(filename, O_RDONLY)) == -1) goto done;
if (read(fmap->fd, &fat_header, sizeof(fat_header)) != sizeof(fat_header))
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) == CPU_TYPE_X86)
{
fmap->arch_offset = swap_ulong_be_to_host(fat_arch.offset);
fmap->arch_size = swap_ulong_be_to_host(fat_arch.size);
break;
}
}
if (i >= narch) goto done;
TRACE("... found x86 arch\n");
}
else
{
fmap->arch_offset = 0;
fmap->arch_size = statbuf.st_size;
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 != MH_MAGIC ||
fmap->mach_header.cputype != CPU_TYPE_X86) 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:
break;
default:
goto done;
}
TRACE("... verified Mach x86 header\n");
fmap->segs_size = 0;
fmap->segs_start = ~0L;
if (macho_enum_load_commands(fmap, LC_SEGMENT, macho_accum_segs_range, NULL) < 0)
goto done;
fmap->segs_size -= fmap->segs_start;
TRACE("segs_start: 0x%08x, segs_size: 0x%08x\n", (unsigned)fmap->segs_start,
(unsigned)fmap->segs_size);
ret = TRUE;
done:
if (!ret)
macho_unmap_file(fmap);
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 macho_file_map* fmap)
{
TRACE("(%p/%d)\n", fmap, fmap->fd);
if (fmap->fd != -1)
{
macho_unmap_load_commands(fmap);
close(fmap->fd);
fmap->fd = -1;
}
}
/******************************************************************
* macho_fill_sect_is_code
*
* Callback for macho_enum_load_commands. Determines which segments
* of a Mach-O file contain code. All commands are expected to be
* of LC_SEGMENT type.
*/
static int macho_fill_sect_is_code(struct macho_file_map* fmap,
const struct load_command* lc, void* user)
{
const struct segment_command* sc = (const struct segment_command*)lc;
const struct section* sections;
int* cursect = user;
int i;
TRACE("(%p/%d, %p, %p/%d) scanning %u sections\n", fmap, fmap->fd, lc,
cursect, *cursect, sc->nsects);
sections = (const struct section*)(sc + 1);
for (i = 0; i < sc->nsects; i++)
{
if (*cursect > MAX_SECT) return -1;
(*cursect)++;
if (!(sections[i].flags & SECTION_TYPE) &&
(sections[i].flags & (S_ATTR_PURE_INSTRUCTIONS|S_ATTR_SOME_INSTRUCTIONS)))
RtlSetBits(&fmap->sect_is_code, *cursect, 1);
else
RtlClearBits(&fmap->sect_is_code, *cursect, 1);
TRACE("Section %d (%d of this segment) is%s code\n", *cursect, i,
(RtlAreBitsSet(&fmap->sect_is_code, *cursect, 1) ? "" : " not"));
}
return 0;
}
/******************************************************************
* 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)
{
TRACE("(%p/%d, %u)\n", fmap, fmap->fd, sectidx);
if (!RtlAreBitsSet(&fmap->sect_is_code, 0, 1))
{
int cursect = 0;
if (macho_enum_load_commands(fmap, LC_SEGMENT, macho_fill_sect_is_code, &cursect) < 0)
WARN("Couldn't load sect_is_code map\n");
RtlSetBits(&fmap->sect_is_code, 0, 1);
}
return RtlAreBitsSet(&fmap->sect_is_code, sectidx, 1);
}
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 macho_file_map* fmap,
const struct load_command* lc, void* user)
{
const struct symtab_command* sc = (const struct symtab_command*)lc;
struct macho_debug_info* mdi = user;
const struct nlist* stab;
const char* stabstr;
int ret = 0;
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 * sizeof(struct nlist),
sc->stroff, sc->strsize, (const void**)&stab, (const void**)&stabstr))
return 0;
if (!stabs_parse(mdi->module, mdi->module->macho_info->load_addr - fmap->segs_start,
stab, sc->nsyms * sizeof(struct nlist),
stabstr, sc->strsize, macho_stabs_def_cb, mdi))
ret = -1;
macho_unmap_ranges(fmap, sc->symoff, sc->nsyms * sizeof(struct nlist),
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 = GET_ENTRY(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->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->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_info(&sym->symt, TI_GET_ADDRESS, &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(&sym->symt, TI_GET_LENGTH, &size);
symt_get_info(&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
{
symt_new_global_variable(module, ste->compiland, ste->ht_elt.name,
!ste->is_global, ste->addr, 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->addr, 0, ste->is_code, ste->is_code);
}
}
}
/******************************************************************
* macho_load_debug_info_from_map
*
* Loads the symbolic information from a Mach-O module.
* Returns
* FALSE if the file doesn't contain symbolic info (or this info
* cannot be read or parsed)
* TRUE on success
*/
static BOOL macho_load_debug_info_from_map(struct module* module,
struct macho_file_map* fmap)
{
BOOL ret = FALSE;
struct macho_debug_info mdi;
int result;
TRACE("(%p, %p/%d)\n", module, fmap, fmap->fd);
module->module.SymType = SymExport;
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(fmap, 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_load_debug_info
*
* Loads Mach-O debugging information from the module image file.
*/
BOOL macho_load_debug_info(struct module* module, struct macho_file_map* fmap)
{
BOOL ret = TRUE;
struct macho_file_map my_fmap;
TRACE("(%p, %p/%d)\n", module, fmap, fmap ? fmap->fd : -1);
if (module->type != DMT_MACHO || !module->macho_info)
{
ERR("Bad Mach-O module '%s'\n", debugstr_w(module->module.LoadedImageName));
return FALSE;
}
if (!fmap)
{
fmap = &my_fmap;
ret = macho_map_file(module->module.LoadedImageName, fmap);
}
if (ret)
ret = macho_load_debug_info_from_map(module, fmap);
if (fmap == &my_fmap) macho_unmap_file(fmap);
return ret;
}
/******************************************************************
* macho_fetch_file_info
*
* Gathers some more information for a Mach-O module from a given file
*/
BOOL macho_fetch_file_info(const WCHAR* name, DWORD* base,
DWORD* size, DWORD* checksum)
{
struct macho_file_map fmap;
TRACE("(%s, %p, %p, %p)\n", debugstr_w(name), base, size, checksum);
if (!macho_map_file(name, &fmap)) return FALSE;
if (base) *base = fmap.segs_start;
*size = fmap.segs_size;
*checksum = calc_crc32(fmap.fd);
macho_unmap_file(&fmap);
return TRUE;
}
/******************************************************************
* 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;
struct macho_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);
if (!macho_map_file(filename, &fmap)) return FALSE;
/* Find the dynamic loader's table of images loaded into the process.
*/
if (macho_info->flags & MACHO_INFO_DEBUG_HEADER)
{
static void* dyld_all_image_infos_addr;
/* This symbol should be in the same place in all processes. */
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)
macho_info->dbg_hdr_addr = (unsigned long)dyld_all_image_infos_addr;
else
ret = FALSE;
TRACE("dbg_hdr_addr = 0x%08lx\n", macho_info->dbg_hdr_addr);
}
if (macho_info->flags & MACHO_INFO_MODULE)
{
struct macho_module_info *macho_module_info =
HeapAlloc(GetProcessHeap(), 0, sizeof(struct macho_module_info));
if (!macho_module_info) goto leave;
macho_info->module = module_new(pcs, filename, DMT_MACHO, FALSE, load_addr,
fmap.segs_size, 0, calc_crc32(fmap.fd));
if (!macho_info->module)
{
HeapFree(GetProcessHeap(), 0, macho_module_info);
goto leave;
}
macho_info->module->macho_info = macho_module_info;
macho_info->module->macho_info->load_addr = load_addr;
if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
macho_info->module->module.SymType = SymDeferred;
else if (!macho_load_debug_info(macho_info->module, &fmap))
ret = FALSE;
macho_info->module->macho_info->in_use = 1;
macho_info->module->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(HANDLE hProcess,
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, %s, 0x%08lx, %s, %p)\n", hProcess, 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(hProcess, 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(HANDLE hProcess,
const WCHAR* filename,
unsigned long load_addr,
struct macho_info* macho_info)
{
BOOL ret = FALSE;
unsigned int index = 0;
const char *path;
TRACE("(%p, %s, 0x%08lx, %p)\n", hProcess, 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(hProcess, 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 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->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 LD_LIBRARY_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)
{
ret = macho_load_file_from_path(pcs, p, load_addr,
getenv("DYLD_FALLBACK_LIBRARY_PATH"), 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, sizeof(bufstrW) / sizeof(WCHAR));
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->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->macho_info->in_use && !module->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)
{
BOOL ret;
const char* ptr;
TRACE("(%p/%p, %p)\n", pcs, pcs->handle, macho_info);
/* All binaries are loaded with WINELOADER (if run from tree) or by the
* main executable
*/
if ((ptr = getenv("WINELOADER")))
{
WCHAR tmp[MAX_PATH];
MultiByteToWideChar(CP_UNIXCP, 0, ptr, -1, tmp, sizeof(tmp) / sizeof(WCHAR));
ret = macho_search_and_load_file(pcs, tmp, 0, macho_info);
}
else
{
ret = macho_search_and_load_file(pcs, S_WineW, 0, macho_info);
}
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->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 /* !__MACH__ */
BOOL macho_synchronize_module_list(struct process* pcs)
{
return FALSE;
}
BOOL macho_fetch_file_info(const WCHAR* name, DWORD* 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 module* module, struct macho_file_map* fmap)
{
return FALSE;
}
#endif /* __MACH__ */