macho_module.c 49.2 KB
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/*
 * File macho_module.c - processing of Mach-O files
 *      Originally based on elf_module.c
 *
 * Copyright (C) 1996, Eric Youngdale.
 *               1999-2007 Eric Pouech
 *               2009 Ken Thomases, CodeWeavers Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "config.h"
#include "wine/port.h"

#include "dbghelp_private.h"

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#ifdef HAVE_MACH_O_LOADER_H
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#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);

393
    if (!strncmp(sc->segname, "WINE_", 5))
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    {
        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;

658 659 660 661
    if (!stabs_parse(mdi->module,
                     mdi->module->format_info[DFI_MACHO]->u.macho_info->load_addr - fmap->segs_start,
                     stab, sc->nsyms * sizeof(struct nlist),
                     stabstr, sc->strsize, macho_stabs_def_cb, mdi))
662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706
        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;
707
                if (func->address == module->format_info[DFI_MACHO]->u.macho_info->load_addr)
708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723
                {
                    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:
724
                    if (data->u.var.offset == module->format_info[DFI_MACHO]->u.macho_info->load_addr)
725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780
                    {
                        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)
781
                symt_get_address(&sym->symt, &addr);
782 783 784 785 786 787 788 789 790 791 792 793 794
            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.
                 */
795 796
                symt_get_info(module, &sym->symt, TI_GET_LENGTH,   &size);
                symt_get_info(module, &sym->symt, TI_GET_DATAKIND, &kind);
797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820
                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
            {
821 822 823 824 825
                struct location loc;

                loc.kind = loc_absolute;
                loc.reg = 0;
                loc.offset = ste->addr;
826
                symt_new_global_variable(module, ste->compiland, ste->ht_elt.name,
827
                                         !ste->is_global, loc, 0, NULL);
828 829 830 831 832 833 834
            }

            ste->used = 1;
        }

        if (ste->is_public && !(dbghelp_options & SYMOPT_NO_PUBLICS))
        {
835
            symt_new_public(module, ste->compiland, ste->ht_elt.name, ste->addr, 0);
836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887
        }
    }
}

/******************************************************************
 *              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);

888
    if (module->type != DMT_MACHO || !module->format_info[DFI_MACHO]->u.macho_info)
889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910
    {
        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
 */
911
BOOL macho_fetch_file_info(const WCHAR* name, DWORD_PTR* base,
912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971
                           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)
    {
972 973 974 975
        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;
976 977 978 979
        macho_info->module = module_new(pcs, filename, DMT_MACHO, FALSE, load_addr,
                                        fmap.segs_size, 0, calc_crc32(fmap.fd));
        if (!macho_info->module)
        {
980
            HeapFree(GetProcessHeap(), 0, modfmt);
981 982
            goto leave;
        }
983 984 985 986 987 988 989 990 991
        macho_module_info = (void*)(modfmt + 1);
        macho_info->module->format_info[DFI_MACHO] = modfmt;

        modfmt->module       = macho_info->module;
        modfmt->remove       = NULL;
        modfmt->loc_compute  = NULL;
        modfmt->u.macho_info = macho_module_info;

        macho_module_info->load_addr = load_addr;
992 993 994 995 996 997

        if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
            macho_info->module->module.SymType = SymDeferred;
        else if (!macho_load_debug_info(macho_info->module, &fmap))
            ret = FALSE;

998 999
        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;
1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125
        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;
1126
        module->format_info[DFI_MACHO]->u.macho_info->in_use = 1;
1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247
        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)
1248
            module->format_info[DFI_MACHO]->u.macho_info->in_use = 0;
1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259
    }

    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 &&
1260 1261
            !module->format_info[DFI_MACHO]->u.macho_info->in_use &&
            !module->format_info[DFI_MACHO]->u.macho_info->is_loader)
1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281
        {
            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)
{
1282
    return macho_search_and_load_file(pcs, get_wine_loader_name(), 0, macho_info);
1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296
}

/******************************************************************
 *              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;
1297
    macho_info.module->format_info[DFI_MACHO]->u.macho_info->is_loader = 1;
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    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;
}

1399
#else  /* HAVE_MACH_O_LOADER_H */
1400 1401 1402 1403 1404 1405

BOOL    macho_synchronize_module_list(struct process* pcs)
{
    return FALSE;
}

1406
BOOL macho_fetch_file_info(const WCHAR* name, DWORD_PTR* base,
1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430
                           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;
}
1431
#endif  /* HAVE_MACH_O_LOADER_H */