MachoFileResolveAddress
Description
Look up the symbol whose value is closest-not-greater than vaddr and within a reasonable function span (next symbol’s value or the segment end).
vaddr is the file-relative virtual address: for a runtime IP in a PIE binary, subtract the slide first.
Success
Returns a pointer to the matching MachoSymbol.
Failure
Returns NULL.
Usage example (Cross-references)
Usage examples (Cross-references)
- In
MachO.c:161:
// Address at the function start.
const MachoSymbol *s = MachoFileResolveAddress(&m, 0x100000010ull);
bool ok = s && s->name && ZstrCompare(s->name, "my_function") == 0;- In
MachO.c:165:
// Address just past the start, still inside the function body.
s = MachoFileResolveAddress(&m, 0x100000020ull);
ok = ok && s && ZstrCompare(s->name, "my_function") == 0;- In
MachO.c:169:
// Address below the symbol value: no match.
s = MachoFileResolveAddress(&m, 0x100000000ull);
ok = ok && s == NULL;- In
MachO.c:257:
u64 vaddr = runtime_addr - slide;
const MachoSymbol *sym = MachoFileResolveAddress(&m, vaddr);
bool ok = sym != NULL && sym->name != NULL &&
ZstrFindSubstring(sym->name, "test_macho_resolves_running_binary_symbol") != NULL;- In
MachoCache.c:214:
// (1) Main file's LC_SYMTAB.
const MachoSymbol *s = MachoFileResolveAddress(&entry->main, file_relative);
if (s && s->name && s->name[0]) {
*out_name = s->name;- In
MachoCache.c:224:
// (2) Sidecar dSYM's LC_SYMTAB.
if (entry_open_dsym(entry, self->allocator)) {
s = MachoFileResolveAddress(&entry->dsym, file_relative);
if (s && s->name && s->name[0]) {
*out_name = s->name;- In
MachO.c:335:
// matched stabs with all three bits set -- N_SO / N_FUN / N_OSO /
// etc. were getting through and polluting lookups).
const MachoSymbol *MachoFileResolveAddress(const MachoFile *self, u64 vaddr) {
if (!self || self->symbols.length == 0)
return NULL;
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