diff options
Diffstat (limited to 'sysdeps/i386/strrchr.S')
| -rw-r--r-- | sysdeps/i386/strrchr.S | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/sysdeps/i386/strrchr.S b/sysdeps/i386/strrchr.S index 0fd95b54f5..98c0c08bd0 100644 --- a/sysdeps/i386/strrchr.S +++ b/sysdeps/i386/strrchr.S @@ -1,6 +1,6 @@ /* strrchr (str, ch) -- Return pointer to last occurrence of CH in STR. For Intel 80x86, x>=3. - Copyright (C) 1994-1997, 2000, 2003 Free Software Foundation, Inc. + Copyright (C) 1994-1997, 2000, 2003, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu> Some optimisations by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au> @@ -35,10 +35,14 @@ ENTRY (BP_SYM (strrchr)) ENTER pushl %edi /* Save callee-safe registers used here. */ + cfi_adjust_cfa_offset (4) + cfi_rel_offset (edi, 0) pushl %esi + cfi_adjust_cfa_offset (4) xorl %eax, %eax movl STR(%esp), %esi + cfi_rel_offset (esi, 0) movl CHR(%esp), %ecx CHECK_BOUNDS_LOW (%esi, STR(%esp)) @@ -299,20 +303,20 @@ L(21): addl $4, %esi returned. */ L(20): cmpb %cl, %dl /* is first byte == C? */ - jne L(24) /* no => skip */ + jne L(24) /* no => skip */ movl %esi, %eax /* store address as result */ L(24): testb %dl, %dl /* is first byte == NUL? */ jz L(2) /* yes => return */ cmpb %cl, %dh /* is second byte == C? */ - jne L(25) /* no => skip */ + jne L(25) /* no => skip */ leal 1(%esi), %eax /* store address as result */ L(25): testb %dh, %dh /* is second byte == NUL? */ jz L(2) /* yes => return */ shrl $16,%edx /* make upper bytes accessible */ cmpb %cl, %dl /* is third byte == C */ - jne L(26) /* no => skip */ + jne L(26) /* no => skip */ leal 2(%esi), %eax /* store address as result */ L(26): testb %dl, %dl /* is third byte == NUL */ jz L(2) /* yes => return */ @@ -324,7 +328,11 @@ L(26): testb %dl, %dl /* is third byte == NUL */ L(2): CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb) RETURN_BOUNDED_POINTER (STR(%esp)) popl %esi /* restore saved register content */ + cfi_adjust_cfa_offset (-4) + cfi_restore (esi) popl %edi + cfi_adjust_cfa_offset (-4) + cfi_restore (edi) LEAVE RET_PTR |