commit 605ee81b0660760dd191f2e2de4c4c92dca5192f
author Christopher Ferris <cferris@google.com> Mon Apr 13 14:20:11 2015 -0700
committer Christopher Ferris <cferris@google.com> Tue Apr 14 16:42:10 2015 -0700
tree 74eaa050e8de122e4615f326f27f458367337718
parent 447cd19681cfd0a71282c87d1b32a7757bbaba81

Add missing cfi directives for x86 assembler.

Change-Id: I80d3e33a71bbaeab5f39b667ebe61e865fd54b80

libc/arch-x86/bionic/syscall.S

diff --git a/libc/arch-x86/bionic/syscall.S b/libc/arch-x86/bionic/syscall.S
index f85ec39..963e4c5 100644
--- a/libc/arch-x86/bionic/syscall.S
+++ b/libc/arch-x86/bionic/syscall.S
@@ -15,9 +15,17 @@
 ENTRY(syscall)
     # Push the callee save registers.
     push    %ebx
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset ebx, 0
     push    %esi
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset esi, 0
     push    %edi
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset edi, 0
     push    %ebp
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset ebp, 0
 
     # Load all the arguments from the calling frame.
     # (Not all will be valid, depending on the syscall.)
@@ -43,8 +51,16 @@
 1:
     # Restore the callee save registers.
     pop    %ebp
+    .cfi_adjust_cfa_offset -4
+    .cfi_restore ebp, 0
     pop    %edi
+    .cfi_adjust_cfa_offset -4
+    .cfi_restore edi, 0
     pop    %esi
+    .cfi_adjust_cfa_offset -4
+    .cfi_restore esi, 0
     pop    %ebx
+    .cfi_adjust_cfa_offset -4
+    .cfi_restore ebx, 0
     ret
 END(syscall)