From 3f02f778cdbec7d95e0a9d6f9368ce9cda0a6d03 Mon Sep 17 00:00:00 2001 From: Greg McGary Date: Fri, 9 Jun 2000 06:14:39 +0000 Subject: * 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 * 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. --- sysdeps/i386/i686/add_n.S | 27 ++++++++++++++------------ sysdeps/i386/i686/memcpy.S | 29 ++++++++++++++++------------ sysdeps/i386/i686/mempcpy.S | 27 +++++++++++++++----------- sysdeps/i386/i686/memset.S | 47 +++++++++++++++++++++++++++++---------------- sysdeps/i386/i686/strcmp.S | 37 ++++++++++++++++++++--------------- 5 files changed, 99 insertions(+), 68 deletions(-) (limited to 'sysdeps/i386/i686') diff --git a/sysdeps/i386/i686/add_n.S b/sysdeps/i386/i686/add_n.S index 5a1339f9f8..45e1284b1b 100644 --- a/sysdeps/i386/i686/add_n.S +++ b/sysdeps/i386/i686/add_n.S @@ -18,16 +18,15 @@ the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -/* - INPUT PARAMETERS - res_ptr (sp + 4) - s1_ptr (sp + 8) - s2_ptr (sp + 12) - size (sp + 16) -*/ - #include "sysdep.h" #include "asm-syntax.h" +#include "bp-asm.h" + +#define PARMS LINKAGE+8 /* space for 2 saved regs */ +#define RES PARMS +#define S1 RES+PTR_SIZE +#define S2 S1+PTR_SIZE +#define SIZE S2+PTR_SIZE .text #ifdef PIC @@ -35,13 +34,15 @@ L(1): addl (%esp), %eax ret #endif ENTRY(__mpn_add_n) + ENTER + pushl %edi pushl %esi - movl 12(%esp),%edi /* res_ptr */ - movl 16(%esp),%esi /* s1_ptr */ - movl 20(%esp),%edx /* s2_ptr */ - movl 24(%esp),%ecx /* size */ + movl RES(%esp),%edi + movl S1(%esp),%esi + movl S2(%esp),%edx + movl SIZE(%esp),%ecx movl %ecx,%eax shrl $3,%ecx /* compute count for unrolled loop */ @@ -100,5 +101,7 @@ L(oop): movl (%esi),%eax popl %esi popl %edi + + LEAVE ret END(__mpn_add_n) diff --git a/sysdeps/i386/i686/memcpy.S b/sysdeps/i386/i686/memcpy.S index eab6855d57..8e8cc41fbc 100644 --- a/sysdeps/i386/i686/memcpy.S +++ b/sysdeps/i386/i686/memcpy.S @@ -1,7 +1,7 @@ /* Copy memory block and return pointer to beginning of destination block For Intel 80x86, x>=6. This file is part of the GNU C Library. - Copyright (C) 1999 Free Software Foundation, Inc. + Copyright (C) 1999, 2000 Free Software Foundation, Inc. Contributed by Ulrich Drepper , 1999. The GNU C Library is free software; you can redistribute it and/or @@ -21,20 +21,23 @@ #include #include "asm-syntax.h" +#include "bp-asm.h" -/* memcpy: - INPUT PARAMETER: - dest (sp + 4) - src (sp + 8) - len (sp + 12) -*/ +#define PARMS LINKAGE /* no space for saved regs */ +#define RTN PARMS +#define DEST RTN+RTN_SIZE +#define SRC DEST+PTR_SIZE +#define LEN SRC+PTR_SIZE + .text ENTRY(memcpy) - movl 12(%esp), %ecx + ENTER + + movl LEN(%esp), %ecx movl %edi, %eax - movl 4(%esp), %edi + movl DEST(%esp), %edi movl %esi, %edx - movl 8(%esp), %esi + movl SRC(%esp), %esi cld shrl $1, %ecx jnc 1f @@ -46,6 +49,8 @@ ENTRY(memcpy) movsl movl %eax, %edi movl %edx, %esi - movl 4(%esp), %eax - ret + movl DEST(%esp), %eax + + LEAVE + RET_PTR END(memcpy) diff --git a/sysdeps/i386/i686/mempcpy.S b/sysdeps/i386/i686/mempcpy.S index 4fb14a3d14..c851d06d44 100644 --- a/sysdeps/i386/i686/mempcpy.S +++ b/sysdeps/i386/i686/mempcpy.S @@ -1,7 +1,7 @@ /* Copy memory block and return pointer to following byte. For Intel 80x86, x>=6. This file is part of the GNU C Library. - Copyright (C) 1998, 1999 Free Software Foundation, Inc. + Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc. Contributed by Ulrich Drepper , 1998. The GNU C Library is free software; you can redistribute it and/or @@ -21,20 +21,23 @@ #include #include "asm-syntax.h" +#include "bp-asm.h" -/* mempcpy: - INPUT PARAMETER: - dest (sp + 4) - src (sp + 8) - len (sp + 12) -*/ +#define PARMS LINKAGE /* no space for saved regs */ +#define RTN PARMS +#define DEST RTN+RTN_SIZE +#define SRC DEST+PTR_SIZE +#define LEN SRC+PTR_SIZE + .text ENTRY(__mempcpy) - movl 12(%esp), %ecx + ENTER + + movl LEN(%esp), %ecx movl %edi, %eax - movl 4(%esp), %edi + movl DEST(%esp), %edi movl %esi, %edx - movl 8(%esp), %esi + movl SRC(%esp), %esi cld shrl $1, %ecx jnc 1f @@ -46,6 +49,8 @@ ENTRY(__mempcpy) movsl xchgl %edi, %eax movl %edx, %esi - ret + + LEAVE + RET_PTR END(__mempcpy) weak_alias (__mempcpy, mempcpy) diff --git a/sysdeps/i386/i686/memset.S b/sysdeps/i386/i686/memset.S index 83f8c50484..74ce87bfc7 100644 --- a/sysdeps/i386/i686/memset.S +++ b/sysdeps/i386/i686/memset.S @@ -1,6 +1,6 @@ /* memset/bzero -- set memory area to CH/0 Highly optimized version for ix86, x>=6. - Copyright (C) 1999 Free Software Foundation, Inc. + Copyright (C) 1999, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1999. @@ -21,27 +21,34 @@ #include #include "asm-syntax.h" +#include "bp-asm.h" -/* - INPUT PARAMETERS: - (memset) (bzero) - dst (sp + 4) dst (sp + 4) - ch (sp + 8) len (sp + 8) - len (sp + 12) -*/ +/* BEWARE: `#ifdef memset' means that memset is redefined as `bzero' */ +#define BZERO_P (defined memset) +#define PARMS LINKAGE+4 /* space for 1 saved reg */ +#if BZERO_P +# define DEST PARMS +# define LEN DEST+PTR_SIZE +#else +# define RTN PARMS +# define DEST RTN+RTN_SIZE +# define CHR DEST+PTR_SIZE +# define LEN CHR+4 +#endif .text ENTRY (memset) + ENTER + cld pushl %edi - movl 8(%esp), %edx -#ifdef memset - movl 12(%esp), %ecx - xorl %eax, %eax + movl DEST(%esp), %edx + movl LEN(%esp), %ecx +#if BZERO_P + xorl %eax, %eax /* fill with 0 */ #else - movzbl 12(%esp), %eax - movl 16(%esp), %ecx + movzbl CHR(%esp), %eax #endif jecxz 1f movl %edx, %edi @@ -61,7 +68,7 @@ ENTRY (memset) 2: movl %ecx, %edx shrl $2, %ecx andl $3, %edx -#ifndef memset +#if !BZERO_P imul $0x01010101, %eax #endif rep @@ -71,9 +78,15 @@ ENTRY (memset) stosb 1: -#ifndef memset - movl 8(%esp), %eax +#if !BZERO_P + movl DEST(%esp), %eax #endif popl %edi + + LEAVE +#if BZERO_P ret +#else + RET_PTR +#endif END (memset) diff --git a/sysdeps/i386/i686/strcmp.S b/sysdeps/i386/i686/strcmp.S index 8ffc5b0bb5..efda8515aa 100644 --- a/sysdeps/i386/i686/strcmp.S +++ b/sysdeps/i386/i686/strcmp.S @@ -1,5 +1,5 @@ /* Highly optimized version for ix86, x>=6. - Copyright (C) 1999 Free Software Foundation, Inc. + Copyright (C) 1999, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1999. @@ -20,29 +20,34 @@ #include #include "asm-syntax.h" +#include "bp-asm.h" -/* - INPUT PARAMETERS: - s1 (sp + 4) - s2 (sp + 8) -*/ - +#define PARMS LINKAGE /* no space for saved regs */ +#define STR1 PARMS +#define STR2 STR1+PTR_SIZE .text ENTRY (strcmp) - movl 4(%esp), %ecx - movl 8(%esp), %edx -1: movb (%ecx), %al + ENTER + + movl STR1(%esp), %ecx + movl STR2(%esp), %edx + +L(oop): movb (%ecx), %al incl %ecx cmpb (%edx), %al - jne 2f + jne L(neq) incl %edx testb %al, %al - jnz 1b + jnz L(oop) + xorl %eax, %eax - jmp 3f -2: movl $1, %eax - ja 3f + jmp L(out) + +L(neq): movl $1, %eax + ja L(out) negl %eax -3: ret + +L(out): LEAVE + ret END (strcmp) -- cgit v1.2.3