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libbacktrace: support FDPIC (1dd5c40)

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This commit is contained in:
Bartosz Taudul
2024-08-24 18:15:52 +02:00
parent 0d0e56dca3
commit e26c34346b
4 changed files with 108 additions and 48 deletions
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public/libbacktrace/macho.cpp
+15 -10
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@@ -318,8 +318,9 @@ static const char * const dwarf_section_names[DEBUG_MAX] =
/* Forward declaration. */
static int macho_add (struct backtrace_state *, const char *, int, off_t,
const unsigned char *, uintptr_t, int,
backtrace_error_callback, void *, fileline *, int *);
const unsigned char *, struct libbacktrace_base_address,
int, backtrace_error_callback, void *, fileline *,
int *);
/* A dummy callback function used when we can't find any debug info. */
@@ -514,7 +515,7 @@ macho_defined_symbol (uint8_t type)
static int
macho_add_symtab (struct backtrace_state *state, int descriptor,
uintptr_t base_address, int is_64,
struct libbacktrace_base_address base_address, int is_64,
off_t symoff, unsigned int nsyms, off_t stroff,
unsigned int strsize,
backtrace_error_callback error_callback, void *data)
@@ -629,7 +630,7 @@ macho_add_symtab (struct backtrace_state *state, int descriptor,
if (name[0] == '_')
++name;
macho_symbols[j].name = name;
macho_symbols[j].address = value + base_address;
macho_symbols[j].address = libbacktrace_add_base (value, base_address);
++j;
}
@@ -762,7 +763,8 @@ macho_syminfo (struct backtrace_state *state, uintptr_t addr,
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,
const unsigned char *match_uuid,
struct libbacktrace_base_address base_address,
int skip_symtab, uint32_t nfat_arch, int is_64,
backtrace_error_callback error_callback, void *data,
fileline *fileline_fn, int *found_sym)
@@ -864,7 +866,8 @@ macho_add_fat (struct backtrace_state *state, const char *filename,
static int
macho_add_dsym (struct backtrace_state *state, const char *filename,
uintptr_t base_address, const unsigned char *uuid,
struct libbacktrace_base_address base_address,
const unsigned char *uuid,
backtrace_error_callback error_callback, void *data,
fileline* fileline_fn)
{
@@ -982,7 +985,7 @@ macho_add_dsym (struct backtrace_state *state, const char *filename,
static int
macho_add (struct backtrace_state *state, const char *filename, int descriptor,
off_t offset, const unsigned char *match_uuid,
uintptr_t base_address, int skip_symtab,
struct libbacktrace_base_address base_address, int skip_symtab,
backtrace_error_callback error_callback, void *data,
fileline *fileline_fn, int *found_sym)
{
@@ -1244,7 +1247,7 @@ backtrace_initialize (struct backtrace_state *state, const char *filename,
c = _dyld_image_count ();
for (i = 0; i < c; ++i)
{
uintptr_t base_address;
struct libbacktrace_base_address base_address;
const char *name;
int d;
fileline mff;
@@ -1268,7 +1271,7 @@ backtrace_initialize (struct backtrace_state *state, const char *filename,
continue;
}
base_address = _dyld_get_image_vmaddr_slide (i);
base_address.m = _dyld_get_image_vmaddr_slide (i);
mff = macho_nodebug;
if (!macho_add (state, name, d, 0, NULL, base_address, 0,
@@ -1323,10 +1326,12 @@ backtrace_initialize (struct backtrace_state *state, const char *filename,
void *data, fileline *fileline_fn)
{
fileline macho_fileline_fn;
struct libbacktrace_base_address zero_base_address;
int found_sym;
macho_fileline_fn = macho_nodebug;
if (!macho_add (state, filename, descriptor, 0, NULL, 0, 0,
memset (&zero_base_address, 0, sizeof zero_base_address);
if (!macho_add (state, filename, descriptor, 0, NULL, zero_base_address, 0,
error_callback, data, &macho_fileline_fn, &found_sym))
return 0;