aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/i386/rawmemchr.S
diff options
context:
space:
mode:
authorGreg McGary <greg@mcgary.org>2000-06-09 06:14:39 +0000
committerGreg McGary <greg@mcgary.org>2000-06-09 06:14:39 +0000
commit3f02f778cdbec7d95e0a9d6f9368ce9cda0a6d03 (patch)
treea193d5f40640e64b7b6555e831772c1934e2a8d0 /sysdeps/i386/rawmemchr.S
parenta40fb915f89d0e225058c0865de4504f83f90173 (diff)
downloadglibc-3f02f778cdbec7d95e0a9d6f9368ce9cda0a6d03.zip
glibc-3f02f778cdbec7d95e0a9d6f9368ce9cda0a6d03.tar.gz
glibc-3f02f778cdbec7d95e0a9d6f9368ce9cda0a6d03.tar.bz2
* sysdeps/i386/bp-asm.h: New file.
* sysdeps/i386/__longjmp.S: Define & use symbolic argument stack offsets. Add ENTER/LEAVE macros for optionally maintaining frame-pointer chain when debugging. * sysdeps/i386/add_n.S: Likewise. * sysdeps/i386/addmul_1.S: Likewise. * sysdeps/i386/lshift.S: Likewise. * sysdeps/i386/memchr.S: Likewise. * sysdeps/i386/memcmp.S: Likewise. * sysdeps/i386/mul_1.S: Likewise. * sysdeps/i386/rawmemchr.S: Likewise. * sysdeps/i386/rshift.S: Likewise. * sysdeps/i386/stpcpy.S: Likewise. * sysdeps/i386/stpncpy.S: Likewise. * sysdeps/i386/strchr.S: Likewise. * sysdeps/i386/strchrnul.S: Likewise. * sysdeps/i386/strcspn.S: Likewise. * sysdeps/i386/strpbrk.S: Likewise. * sysdeps/i386/strrchr.S: Likewise. * sysdeps/i386/strspn.S: Likewise. * sysdeps/i386/strtok.S: Likewise. * sysdeps/i386/sub_n.S: Likewise. * sysdeps/i386/submul_1.S: Likewise. * sysdeps/i386/elf/setjmp.S: Likewise. * sysdeps/i386/i486/strcat.S: Likewise. * sysdeps/i386/i486/strlen.S: Likewise. * sysdeps/i386/i586/add_n.S: Likewise. * sysdeps/i386/i586/lshift.S: Likewise. * sysdeps/i386/i586/memcpy.S: Likewise. * sysdeps/i386/i586/memset.S: Likewise. * sysdeps/i386/i586/rshift.S: Likewise. * sysdeps/i386/i586/strchr.S: Likewise. * sysdeps/i386/i586/strcpy.S: Likewise. * sysdeps/i386/i586/strlen.S: Likewise. * sysdeps/i386/i586/sub_n.S: Likewise. * sysdeps/i386/i686/add_n.S: Likewise. * sysdeps/i386/i686/memcpy.S: Likewise. * sysdeps/i386/i686/mempcpy.S: Likewise. * sysdeps/i386/i686/memset.S: Likewise. * sysdeps/i386/i686/strcmp.S: Likewise. 2000-06-08 Greg McGary <greg@mcgary.org> * sysdeps/i386/bp-asm.h: New file. * sysdeps/i386/__longjmp.S: Define & use symbolic argument stack offsets. Add ENTER/LEAVE macros for optionally maintaining frame-pointer chain when debugging. * sysdeps/i386/add_n.S: Likewise. * sysdeps/i386/addmul_1.S: Likewise. * sysdeps/i386/lshift.S: Likewise. * sysdeps/i386/memchr.S: Likewise. * sysdeps/i386/memcmp.S: Likewise. * sysdeps/i386/mul_1.S: Likewise. * sysdeps/i386/rawmemchr.S: Likewise. * sysdeps/i386/rshift.S: Likewise. * sysdeps/i386/stpcpy.S: Likewise. * sysdeps/i386/stpncpy.S: Likewise. * sysdeps/i386/strchr.S: Likewise. * sysdeps/i386/strchrnul.S: Likewise. * sysdeps/i386/strcspn.S: Likewise. * sysdeps/i386/strpbrk.S: Likewise. * sysdeps/i386/strrchr.S: Likewise. * sysdeps/i386/strspn.S: Likewise. * sysdeps/i386/strtok.S: Likewise. * sysdeps/i386/sub_n.S: Likewise. * sysdeps/i386/submul_1.S: Likewise. * sysdeps/i386/elf/setjmp.S: Likewise. * sysdeps/i386/i486/strcat.S: Likewise. * sysdeps/i386/i486/strlen.S: Likewise. * sysdeps/i386/i586/add_n.S: Likewise. * sysdeps/i386/i586/lshift.S: Likewise. * sysdeps/i386/i586/memcpy.S: Likewise. * sysdeps/i386/i586/memset.S: Likewise. * sysdeps/i386/i586/rshift.S: Likewise. * sysdeps/i386/i586/strchr.S: Likewise. * sysdeps/i386/i586/strcpy.S: Likewise. * sysdeps/i386/i586/strlen.S: Likewise. * sysdeps/i386/i586/sub_n.S: Likewise. * sysdeps/i386/i686/add_n.S: Likewise. * sysdeps/i386/i686/memcpy.S: Likewise. * sysdeps/i386/i686/mempcpy.S: Likewise. * sysdeps/i386/i686/memset.S: Likewise. * sysdeps/i386/i686/strcmp.S: Likewise.
Diffstat (limited to 'sysdeps/i386/rawmemchr.S')
-rw-r--r--sysdeps/i386/rawmemchr.S19
1 files changed, 11 insertions, 8 deletions
diff --git a/sysdeps/i386/rawmemchr.S b/sysdeps/i386/rawmemchr.S
index 83626e0..89ba8d3 100644
--- a/sysdeps/i386/rawmemchr.S
+++ b/sysdeps/i386/rawmemchr.S
@@ -1,6 +1,6 @@
/* rawmemchr (str, ch) -- Return pointer to first occurrence of CH in STR.
For Intel 80x86, x>=3.
- Copyright (C) 1994, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
+ Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>
Optimised a little by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au>
@@ -31,21 +31,23 @@
#include <sysdep.h>
#include "asm-syntax.h"
+#include "bp-asm.h"
-/*
- INPUT PARAMETERS:
- str (sp + 4)
- c (sp + 8)
-*/
+#define PARMS LINKAGE+4 /* space for 1 saved reg */
+#define RTN PARMS
+#define STR RTN+RTN_SIZE
+#define CHR STR+PTR_SIZE
.text
ENTRY (__rawmemchr)
+ ENTER
+
/* Save callee-safe register used in this function. */
pushl %edi
/* Load parameters into registers. */
- movl 8(%esp), %eax /* str: pointer to memory block. */
- movl 12(%esp), %edx /* c: byte we are looking for. */
+ movl STR(%esp), %eax
+ movl CHR(%esp), %edx
/* At the moment %edx contains C. What we need for the
algorithm is C in all bytes of the dword. Avoid
@@ -213,6 +215,7 @@ L(8): testb %cl, %cl /* test first byte in dword */
L(9): popl %edi /* pop saved register */
+ LEAVE
ret
END (__rawmemchr)
weak_alias (__rawmemchr, rawmemchr)