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ld.so: Handle local TLSDESC entry from libstdc++?

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This commit is contained in:
K. Lange 2022-10-26 17:39:09 +09:00
parent 09af9ac25a
commit d996223d55
1 changed files with 11 additions and 5 deletions
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16
linker/linker.c
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@ -578,12 +578,18 @@ static int object_relocate(elf_t * object) {
memcpy((void *)(table->r_offset + object->base), &x, sizeof(uintptr_t));
break;
case 1031: {
x += *((ssize_t *)(table->r_offset + object->base));
if (!hashmap_has(tls_map, symname)) {
fprintf(stderr, "Don't know where to get %s from TLS\n", symname);
exit(1);
if (symbol) {
if (!hashmap_has(tls_map, symname)) {
fprintf(stderr, "Warning: Don't know where to get %s (symbol %d) from TLS\n", symname, symbol);
break;
}
x += *((ssize_t *)(table->r_offset + object->base));
x += (size_t)hashmap_get(tls_map, symname);
} else {
/* local tls descriptor? no symbol? idk what to do with this, hope it works */
x = current_tls_offset;
current_tls_offset += 8*4; /* idk, alignment I guess */
}
x += (size_t)hashmap_get(tls_map, symname);
uintptr_t func = (uintptr_t)&__tlsdesc_static;
memcpy((void *)(table->r_offset + object->base), &func, sizeof(uintptr_t));
memcpy((void *)(table->r_offset + object->base + sizeof(uintptr_t)), &x, sizeof(uintptr_t));