Add cfi directives for arm64 assembler.
Fix syscall generator to add cfi directives and add the directives
for all arm64 assembler.
Bug: 15138290
Change-Id: I7f0e4a16c141ac624e5276917a3a1ed45778e057
diff --git a/libc/arch-arm64/syscalls/fdatasync.S b/libc/arch-arm64/syscalls/fdatasync.S
index b4e9aa9..4cf4de3 100644
--- a/libc/arch-arm64/syscalls/fdatasync.S
+++ b/libc/arch-arm64/syscalls/fdatasync.S
@@ -4,14 +4,18 @@
ENTRY(fdatasync)
stp x29, x30, [sp, #-16]!
+ .cfi_def_cfa_offset 16
+ .cfi_rel_offset x29, 0
+ .cfi_rel_offset x30, 8
mov x29, sp
- str x8, [sp, #-16]!
mov x8, __NR_fdatasync
svc #0
- ldr x8, [sp], #16
ldp x29, x30, [sp], #16
+ .cfi_def_cfa_offset 0
+ .cfi_restore x29
+ .cfi_restore x30
cmn x0, #(MAX_ERRNO + 1)
cneg x0, x0, hi