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linker: rudimentary TLSDESC for aarch64; kuroko modules

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This commit is contained in:
K. Lange 2022-05-23 23:29:08 +09:00
parent 608a29d588
commit ef97b6ab11
1 changed files with 17 additions and 0 deletions
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17
linker/linker.c
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@ -414,6 +414,7 @@ static int need_symbol_for_type(unsigned int type) {
case 1025:
case 1026:
case 1030:
case 1031:
case 257:
return 1;
default:
@ -423,6 +424,10 @@ static int need_symbol_for_type(unsigned int type) {
#endif
}
static size_t __tlsdesc_static(size_t * a) {
return a[1];
}
/* Apply ELF relocations */
static int object_relocate(elf_t * object) {
@ -571,6 +576,18 @@ 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);
}
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));
break;
}
#else
# error "unsupported"
#endif