diff options
Diffstat (limited to 'sysdeps/i386/strrchr.S')
| -rw-r--r-- | sysdeps/i386/strrchr.S | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/sysdeps/i386/strrchr.S b/sysdeps/i386/strrchr.S index 111f986dd8..328d8b0a09 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, 1995, 1996, 1997 Free Software Foundation, Inc. + Copyright (C) 1994, 1995, 1996, 1997, 2000 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> @@ -22,21 +22,23 @@ #include <sysdep.h> #include "asm-syntax.h" +#include "bp-asm.h" -/* - INPUT PARAMETERS: - str (sp + 4) - ch (sp + 8) -*/ +#define PARMS LINKAGE+8 /* space for 2 saved regs */ +#define RTN PARMS +#define STR RTN+RTN_SIZE +#define CHR STR+PTR_SIZE .text ENTRY (strrchr) + ENTER + pushl %edi /* Save callee-safe registers used here. */ pushl %esi xorl %eax, %eax - movl 12(%esp), %esi /* get string pointer */ - movl 16(%esp), %ecx /* get character we are looking for */ + movl STR(%esp), %esi + movl CHR(%esp), %ecx /* At the moment %ecx contains C. What we need for the algorithm is C in all bytes of the dword. Avoid @@ -320,7 +322,8 @@ L(26): testb %dl, %dl /* is third byte == NUL */ L(2): popl %esi /* restore saved register content */ popl %edi - ret + LEAVE + RET_PTR END (strrchr) weak_alias (strrchr, rindex) |