diff options
Diffstat (limited to 'sysdeps/i386/memcmp.S')
| -rw-r--r-- | sysdeps/i386/memcmp.S | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/sysdeps/i386/memcmp.S b/sysdeps/i386/memcmp.S index 723b5025ff..a1cbadb621 100644 --- a/sysdeps/i386/memcmp.S +++ b/sysdeps/i386/memcmp.S @@ -1,5 +1,5 @@ /* Compare two memory blocks for differences in the first COUNT bytes. - Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. + Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -19,23 +19,24 @@ #include <sysdep.h> #include "asm-syntax.h" +#include "bp-asm.h" -/* - INPUT PARAMETERS: - block1 (sp + 4) - block2 (sp + 8) - len (sp + 12) -*/ +#define PARMS LINKAGE+4 /* space for 1 saved reg */ +#define BLK1 PARMS +#define BLK2 BLK1+PTR_SIZE +#define LEN BLK2+PTR_SIZE .text ENTRY (memcmp) + ENTER + pushl %esi /* Save callee-safe registers. */ movl %edi, %edx /* Note that %edx is not used and can so be used to save %edi. It's faster. */ - movl 8(%esp), %esi /* Load address of block #1. */ - movl 12(%esp), %edi /* Load address of block #2. */ - movl 16(%esp), %ecx /* Load maximal length of compare area. */ + movl BLK1(%esp), %esi + movl BLK2(%esp), %edi + movl LEN(%esp), %ecx cld /* Set direction of comparison. */ @@ -61,6 +62,7 @@ ENTRY (memcmp) L(1): popl %esi /* Restore registers. */ movl %edx, %edi + LEAVE ret END (memcmp) |