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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/i586/strlen.S
parenta40fb915f89d0e225058c0865de4504f83f90173 (diff)
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* 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/i586/strlen.S')
-rw-r--r--sysdeps/i386/i586/strlen.S17
1 files changed, 9 insertions, 8 deletions
diff --git a/sysdeps/i386/i586/strlen.S b/sysdeps/i386/i586/strlen.S
index 2e6ea680ec..e2771268ed 100644
--- a/sysdeps/i386/i586/strlen.S
+++ b/sysdeps/i386/i586/strlen.S
@@ -1,6 +1,6 @@
 /* strlen -- Compute length og NUL terminated string.
    Highly optimized version for ix86, x>=5.
-   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.
    Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>.
 
@@ -21,6 +21,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
 /* This version is especially optimized for the i586 (and following?)
    processors.  This is mainly done by using the two pipelines.  The
@@ -35,14 +36,14 @@
 /* The magic value which is used throughout in the whole code.  */
 #define magic 0xfefefeff
 
-/*
-   INPUT PARAMETERS:
-   str		(sp + 4)
-*/
+#define PARMS	LINKAGE		/* no space for saved regs */
+#define STR	PARMS
 
 	.text
 ENTRY(strlen)
-	movl 4(%esp), %eax	/* get string pointer */
+	ENTER
+
+	movl STR(%esp), %eax
 	movl $3, %edx		/* load mask (= 3) */
 
 	andl %eax, %edx		/* separate last two bits of address */
@@ -176,9 +177,9 @@ L(3):	subl $4, %eax		/* correct too early pointer increment */
 
 	incl %eax		/* increment pointer */
 
-L(2):	subl 4(%esp), %eax	/* now compute the length as difference
+L(2):	subl STR(%esp), %eax	/* now compute the length as difference
 				   between start and terminating NUL
 				   character */
-
+	LEAVE
 	ret
 END (strlen)