zhangengru/tracy
1
0
Fork 0
mirror of https://github.com/wolfpld/tracy.git synced 2025-03-20 07:40:02 +08:00
Code Issues Projects Wiki Activity

Update libbacktrace to dedbe13fda.

Browse Source
This commit is contained in:
Bartosz Taudul
2021-01-31 15:15:59 +01:00
committed by Bartosz Taudul
parent a3bfbab6bd
commit 8bacc7a91c
11 changed files with 1975 additions and 313 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libbacktrace/macho.cpp
+72 -26
View File
@@ -1,5 +1,5 @@
/* elf.c -- Get debug data from a Mach-O file for backtraces.
Copyright (C) 2020 Free Software Foundation, Inc.
Copyright (C) 2020-2021 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Google.
Redistribution and use in source and binary forms, with or without
@@ -78,7 +78,7 @@ struct macho_header_64
struct macho_header_fat
{
uint32_t magic; /* Magic number (MACH_O_MH_MAGIC_FAT) */
uint32_t magic; /* Magic number (MACH_O_MH_(MAGIC|CIGAM)_FAT(_64)?) */
uint32_t nfat_arch; /* Number of components */
};
@@ -88,6 +88,8 @@ struct macho_header_fat
#define MACH_O_MH_MAGIC_64 0xfeedfacf
#define MACH_O_MH_MAGIC_FAT 0xcafebabe
#define MACH_O_MH_CIGAM_FAT 0xbebafeca
#define MACH_O_MH_MAGIC_FAT_64 0xcafebabf
#define MACH_O_MH_CIGAM_FAT_64 0xbfbafeca
/* Value for the header filetype field. */
@@ -108,6 +110,20 @@ struct macho_fat_arch
uint32_t align; /* Alignment of this entry */
};
/* A component of a 64-bit fat file. This is used if the magic field
is MAGIC_FAT_64. This is only used when some file size or file
offset is too large to represent in the 32-bit format. */
struct macho_fat_arch_64
{
uint32_t cputype; /* CPU type */
uint32_t cpusubtype; /* CPU subtype */
uint64_t offset; /* File offset of this entry */
uint64_t size; /* Size of this entry */
uint32_t align; /* Alignment of this entry */
uint32_t reserved; /* Reserved */
};
/* Values for the fat_arch cputype field (and the header cputype
field). */
@@ -115,9 +131,11 @@ struct macho_fat_arch
#define MACH_O_CPU_TYPE_X86 7
#define MACH_O_CPU_TYPE_ARM 12
#define MACH_O_CPU_TYPE_PPC 18
#define MACH_O_CPU_TYPE_X86_64 (MACH_O_CPU_TYPE_X86 | MACH_O_CPU_ARCH_ABI64)
#define MACH_O_CPU_TYPE_ARM64 (MACH_O_CPU_TYPE_ARM | MACH_O_CPU_ARCH_ABI64)
#define MACH_O_CPU_TYPE_PPC64 (MACH_O_CPU_TYPE_PPC | MACH_O_CPU_ARCH_ABI64)
/* The header of a load command. */
@@ -743,14 +761,14 @@ static int
macho_add_fat (struct backtrace_state *state, const char *filename,
int descriptor, int swapped, off_t offset,
const unsigned char *match_uuid, uintptr_t base_address,
int skip_symtab, uint32_t nfat_arch,
int skip_symtab, uint32_t nfat_arch, int is_64,
backtrace_error_callback error_callback, void *data,
fileline *fileline_fn, int *found_sym)
{
int arch_view_valid;
unsigned int cputype;
size_t arch_size;
struct backtrace_view arch_view;
size_t archoffset;
unsigned int i;
arch_view_valid = 0;
@@ -763,46 +781,69 @@ macho_add_fat (struct backtrace_state *state, const char *filename,
cputype = MACH_O_CPU_TYPE_ARM64;
#elif defined (__arm__)
cputype = MACH_O_CPU_TYPE_ARM;
#elif defined (__ppc__)
cputype = MACH_O_CPU_TYPE_PPC;
#elif defined (__ppc64__)
cputype = MACH_O_CPU_TYPE_PPC64;
#else
error_callback (data, "unknown Mach-O architecture", 0);
goto fail;
#endif
if (is_64)
arch_size = sizeof (struct macho_fat_arch_64);
else
arch_size = sizeof (struct macho_fat_arch);
if (!backtrace_get_view (state, descriptor, offset,
nfat_arch * sizeof (struct macho_fat_arch),
nfat_arch * arch_size,
error_callback, data, &arch_view))
goto fail;
archoffset = 0;
for (i = 0; i < nfat_arch; ++i)
{
struct macho_fat_arch fat_arch;
uint32_t fcputype;
uint64_t foffset;
memcpy (&fat_arch,
((const char *) arch_view.data
+ i * sizeof (struct macho_fat_arch)),
sizeof fat_arch);
if (is_64)
{
struct macho_fat_arch_64 fat_arch_64;
fcputype = fat_arch.cputype;
if (swapped)
fcputype = __builtin_bswap32 (fcputype);
memcpy (&fat_arch_64,
(const char *) arch_view.data + i * arch_size,
arch_size);
fcputype = fat_arch_64.cputype;
foffset = fat_arch_64.offset;
if (swapped)
{
fcputype = __builtin_bswap32 (fcputype);
foffset = __builtin_bswap64 (foffset);
}
}
else
{
struct macho_fat_arch fat_arch_32;
memcpy (&fat_arch_32,
(const char *) arch_view.data + i * arch_size,
arch_size);
fcputype = fat_arch_32.cputype;
foffset = (uint64_t) fat_arch_32.offset;
if (swapped)
{
fcputype = __builtin_bswap32 (fcputype);
foffset = (uint64_t) __builtin_bswap32 ((uint32_t) foffset);
}
}
if (fcputype == cputype)
{
uint32_t foffset;
/* FIXME: What about cpusubtype? */
foffset = fat_arch.offset;
if (swapped)
foffset = __builtin_bswap32 (foffset);
backtrace_release_view (state, &arch_view, error_callback, data);
return macho_add (state, filename, descriptor, foffset, match_uuid,
base_address, skip_symtab, error_callback, data,
fileline_fn, found_sym);
}
archoffset += sizeof (struct macho_fat_arch);
}
error_callback (data, "could not find executable in fat file", 0);
@@ -871,6 +912,7 @@ macho_add_dsym (struct backtrace_state *state, const char *filename,
dsymsuffixdirlen = strlen (dsymsuffixdir);
dsymlen = (dirnamelen
+ 1
+ basenamelen
+ dsymsuffixdirlen
+ basenamelen
@@ -893,7 +935,7 @@ macho_add_dsym (struct backtrace_state *state, const char *filename,
if (diralc != NULL)
{
backtrace_free (state, diralc, dirnamelen, error_callback, data);
backtrace_free (state, diralc, dirnamelen + 1, error_callback, data);
diralc = NULL;
}
@@ -983,6 +1025,7 @@ macho_add (struct backtrace_state *state, const char *filename, int descriptor,
hdroffset = offset + sizeof (struct macho_header_64);
break;
case MACH_O_MH_MAGIC_FAT:
case MACH_O_MH_MAGIC_FAT_64:
{
struct macho_header_fat fat_header;
@@ -990,10 +1033,12 @@ macho_add (struct backtrace_state *state, const char *filename, int descriptor,
memcpy (&fat_header, &header, sizeof fat_header);
return macho_add_fat (state, filename, descriptor, 0, hdroffset,
match_uuid, base_address, skip_symtab,
fat_header.nfat_arch, error_callback, data,
fileline_fn, found_sym);
fat_header.nfat_arch,
header.magic == MACH_O_MH_MAGIC_FAT_64,
error_callback, data, fileline_fn, found_sym);
}
case MACH_O_MH_CIGAM_FAT:
case MACH_O_MH_CIGAM_FAT_64:
{
struct macho_header_fat fat_header;
uint32_t nfat_arch;
@@ -1003,8 +1048,9 @@ macho_add (struct backtrace_state *state, const char *filename, int descriptor,
nfat_arch = __builtin_bswap32 (fat_header.nfat_arch);
return macho_add_fat (state, filename, descriptor, 1, hdroffset,
match_uuid, base_address, skip_symtab,
nfat_arch, error_callback, data,
fileline_fn, found_sym);
nfat_arch,
header.magic == MACH_O_MH_CIGAM_FAT_64,
error_callback, data, fileline_fn, found_sym);
}
default:
error_callback (data, "executable file is not in Mach-O format", 0);