* 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.

38 files changed, 732 insertions, 420 deletions

diff --git a/sysdeps/i386/__longjmp.S b/sysdeps/i386/__longjmp.S
index a8049e9de3..54f31361be 100644
--- a/sysdeps/i386/__longjmp.S
+++ b/sysdeps/i386/__longjmp.S
@@ -1,5 +1,5 @@
 /* longjmp for i386.
-   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 1997, 1998, 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
@@ -21,10 +21,19 @@
 #define _ASM
 #define _SETJMP_H
 #include <bits/setjmp.h>
+#include <bp-asm.h>
+
+#define PARMS	LINKAGE		/* no space for saved regs */
+#define JBUF	PARMS
+#define VAL	JBUF+PTR_SIZE
 
 ENTRY (__longjmp)
-	movl 4(%esp), %ecx	/* User's jmp_buf in %ecx.  */
-	movl 8(%esp), %eax	/* Second argument is return value.  */
+	ENTER
+
+	movl JBUF(%esp), %ecx	/* User's jmp_buf in %ecx.  */
+	LEAVE
+
+	movl VAL(%esp), %eax	/* Second argument is return value.  */
 	/* Save the return address now.  */
 	movl (JB_PC*4)(%ecx), %edx
      	/* Restore registers.  */
diff --git a/sysdeps/i386/add_n.S b/sysdeps/i386/add_n.S
index 8bf1512087..edd2e852fd 100644
--- a/sysdeps/i386/add_n.S
+++ b/sysdeps/i386/add_n.S
@@ -1,6 +1,6 @@
 /* Add two limb vectors of the same length > 0 and store sum in a third
    limb vector.
-   Copyright (C) 1992, 94, 95, 97, 98 Free Software Foundation, Inc.
+   Copyright (C) 1992, 94, 95, 97, 98, 2000 Free Software Foundation, Inc.
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
@@ -18,26 +18,27 @@
    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
 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 */
@@ -99,5 +100,7 @@ L(oop):	movl	(%esi),%eax
 
 	popl %esi
 	popl %edi
+
+	LEAVE
 	ret
 END(__mpn_add_n)
diff --git a/sysdeps/i386/addmul_1.S b/sysdeps/i386/addmul_1.S
index d7df5270c3..50151ea07d 100644
--- a/sysdeps/i386/addmul_1.S
+++ b/sysdeps/i386/addmul_1.S
@@ -1,6 +1,6 @@
 /* i80386 __mpn_addmul_1 -- Multiply a limb vector with a limb and add
    the result to a second limb vector.
-   Copyright (C) 1992, 1994, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1994, 1997, 1998, 2000 Free Software Foundation, Inc.
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
@@ -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)
-   sizeP	(sp + 12)
-   s2_limb	(sp + 16)
-*/
-
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-asm.h"
+
+#define PARMS	LINKAGE+16	/* space for 4 saved regs */
+#define RES	PARMS
+#define S1	RES+PTR_SIZE
+#define SIZE	S1+PTR_SIZE
+#define S2LIMB	SIZE+4
 
 #define res_ptr edi
 #define s1_ptr esi
@@ -42,10 +41,10 @@ ENTRY(__mpn_addmul_1)
 	INSN1(push,l	,R(ebx))
 	INSN1(push,l	,R(ebp))
 
-	INSN2(mov,l	,R(res_ptr),MEM_DISP(esp,20))
-	INSN2(mov,l	,R(s1_ptr),MEM_DISP(esp,24))
-	INSN2(mov,l	,R(sizeP),MEM_DISP(esp,28))
-	INSN2(mov,l	,R(s2_limb),MEM_DISP(esp,32))
+	INSN2(mov,l	,R(res_ptr),MEM_DISP(esp,RES))
+	INSN2(mov,l	,R(s1_ptr),MEM_DISP(esp,S1))
+	INSN2(mov,l	,R(sizeP),MEM_DISP(esp,SIZE))
+	INSN2(mov,l	,R(s2_limb),MEM_DISP(esp,S2LIMB))
 
 	INSN2(lea,l	,R(res_ptr),MEM_INDEX(res_ptr,sizeP,4))
 	INSN2(lea,l	,R(s1_ptr),MEM_INDEX(s1_ptr,sizeP,4))
diff --git a/sysdeps/i386/bp-asm.h b/sysdeps/i386/bp-asm.h
new file mode 100644
index 0000000000..197c6da88c
--- /dev/null
+++ b/sysdeps/i386/bp-asm.h
@@ -0,0 +1,142 @@
+/* Bounded-pointer definitions for x86 assembler.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Greg McGary <greg@mcgary.org>
+
+   This file is part of the GNU C Library.  Its master source is NOT part of
+   the C library, however.  The master source lives in the GNU MP Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _bp_asm_h_
+# define _bp_asm_h_ 1
+
+# if __ASSEMBLER__
+
+#  if __BOUNDED_POINTERS__
+
+/* Bounded pointers occupy three words.  */
+#   define PTR_SIZE 12
+/* Bounded pointer return values are passed back through a hidden
+   argument that points to caller-allocate space.  The hidden arg
+   occupies one word on the stack.  */
+#   define RTN_SIZE 4
+/* Although the caller pushes the hidden arg, the callee is
+   responsible for popping it.  */
+#   define RET_PTR ret $RTN_SIZE
+/* Maintain frame pointer chain in leaf assembler functions for the benefit
+   of debugging stack traces when bounds violations occur.  */
+#   define ENTER pushl %ebp; movl %esp, %ebp
+#   define LEAVE movl %ebp, %esp; popl %ebp
+/* Stack space overhead of procedure-call linkage: return address and
+   frame pointer.  */
+#   define LINKAGE 8
+
+/* Int 5 is the "bound range" exception also raised by the "bound"
+   instruction.  */
+#   define BOUNDS_VIOLATED int $5
+
+#   define CHECK_BOUNDS_LOW(VAL_REG, BP_MEM)	\
+	cmpl 4+BP_MEM, VAL_REG;			\
+	jae 0f; /* continue if value >= low */	\
+	BOUNDS_VIOLATED;			\
+    0:
+
+#   define CHECK_BOUNDS_HIGH(VAL_REG, BP_MEM, Jcc)	\
+	cmpl 8+BP_MEM, VAL_REG;				\
+	Jcc 0f; /* continue if value < high */		\
+	BOUNDS_VIOLATED;				\
+    0:
+
+#   define CHECK_BOUNDS_BOTH(VAL_REG, BP_MEM)	\
+	cmpl 4+BP_MEM, VAL_REG;			\
+	jb 1f; /* die if value < low */		\
+    	cmpl 8+BP_MEM, VAL_REG;			\
+	jb 0f; /* continue if value < high */	\
+    1:	BOUNDS_VIOLATED;			\
+    0:
+
+#   define CHECK_BOUNDS_BOTH_WIDE(VAL_REG, BP_MEM, LENGTH)	\
+	CHECK_BOUNDS_LOW(VAL_REG, BP_MEM);			\
+	addl LENGTH, VAL_REG;					\
+    	cmpl 8+BP_MEM, VAL_REG;					\
+	jbe 0f; /* continue if value <= high */			\
+	BOUNDS_VIOLATED;					\
+    0:	subl LENGTH, VAL_REG /* restore value */
+
+/* Take bounds from BP_MEM and affix them to the pointer
+   value in %eax, stuffing all into memory at RTN(%esp).
+   Use %ecx as a scratch register.  */
+
+#   define RETURN_BOUNDED_POINTER(BP_MEM)	\
+	movl RTN(%esp), %ecx;			\
+	movl %eax, 0(%ecx);			\
+	movl 4+BP_MEM, %eax;			\
+	movl %eax, 4(%ecx);			\
+	movl 8+BP_MEM, %eax;			\
+	movl %eax, 8(%ecx)
+
+#   define RETURN_NULL_BOUNDED_POINTER		\
+	movl RTN(%esp), %ecx;			\
+	movl %eax, 0(%ecx);			\
+	movl %eax, 4(%ecx);			\
+	movl %eax, 8(%ecx)
+
+/* The caller of __errno_location is responsible for allocating space
+   for the three-word BP return-value and passing pushing its address
+   as an implicit first argument.  */
+#   define PUSH_ERRNO_LOCATION_RETURN		\
+	subl $8, %esp;				\
+	subl $4, %esp;				\
+	pushl %esp
+
+/* __errno_location is responsible for popping the implicit first
+   argument, but we must pop the space for the BP itself.  We also
+   dereference the return value in order to dig out the pointer value.  */
+#   define POP_ERRNO_LOCATION_RETURN		\
+	movl (%esp), %eax;			\
+	addl $4, %esp;				\
+	addl $8, %esp
+
+#  else /* !__BOUNDED_POINTERS__ */
+
+/* Unbounded pointers occupy one word.  */
+#   define PTR_SIZE 4
+/* Unbounded pointer return values are passed back in the register %eax.  */
+#   define RTN_SIZE 0
+/* Use simple return instruction for unbounded pointer values.  */
+#   define RET_PTR ret
+/* Don't maintain frame pointer chain for leaf assembler functions.  */
+#   define ENTER
+#   define LEAVE
+/* Stack space overhead of procedure-call linkage: return address only.  */
+#   define LINKAGE 4
+
+#   define CHECK_BOUNDS_LOW(VAL_REG, BP_MEM)
+#   define CHECK_BOUNDS_HIGH(VAL_REG, BP_MEM, Jcc)
+#   define CHECK_BOUNDS_BOTH(VAL_REG, BP_MEM)
+#   define CHECK_BOUNDS_BOTH_WIDE(VAL_REG, BP_MEM, LENGTH)
+#   define RETURN_BOUNDED_POINTER(BP_MEM)
+
+#   define RETURN_NULL_BOUNDED_POINTER
+
+#   define PUSH_ERRNO_LOCATION_RETURN
+#   define POP_ERRNO_LOCATION_RETURN
+
+#  endif /* !__BOUNDED_POINTERS__ */
+
+# endif /* __ASSEMBLER__ */
+
+#endif /* _bp_asm_h_ */
diff --git a/sysdeps/i386/elf/setjmp.S b/sysdeps/i386/elf/setjmp.S
index 40710be1ef..e734809bf8 100644
--- a/sysdeps/i386/elf/setjmp.S
+++ b/sysdeps/i386/elf/setjmp.S
@@ -21,6 +21,11 @@
 #define _ASM
 #define _SETJMP_H
 #include <bits/setjmp.h>
+#include "bp-asm.h"
+
+#define PARMS	LINKAGE		/* no space for saved regs */
+#define JBUF	PARMS
+#define SGMSK	JBUF+PRT_SIZE
 
 	/* We include the BSD entry points here as well but we make
 	   them weak.  */
@@ -55,7 +60,7 @@ ENTRY (__sigsetjmp)
 	movl %esi, (JB_SI*4)(%eax)
 	movl %edi, (JB_DI*4)(%eax)
 	movl %ebp, (JB_BP*4)(%eax)
-	leal 4(%esp), %ecx	/* Save SP as it will be after we return.  */
+	leal JBUF(%esp), %ecx	/* Save SP as it will be after we return.  */
      	movl %ecx, (JB_SP*4)(%eax)
 	movl 0(%esp), %ecx	/* Save PC we are returning to now.  */
      	movl %ecx, (JB_PC*4)(%eax)
diff --git a/sysdeps/i386/i486/strcat.S b/sysdeps/i386/i486/strcat.S
index c3893315e7..c4ab170389 100644
--- a/sysdeps/i386/i486/strcat.S
+++ b/sysdeps/i386/i486/strcat.S
@@ -1,6 +1,6 @@
 /* strcat(dest, src) -- Append SRC on the end of DEST.
    For Intel 80x86, x>=4.
-   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@ipd.info.uni-karlsruhe.de>.
    Optimised a little by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au>
@@ -22,19 +22,21 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
-/*
-   INPUT PARAMETERS:
-   dest		(sp + 4)
-   src		(sp + 8)
-*/
+#define PARMS	LINKAGE+4	/* space for 1 saved reg */
+#define RTN	PARMS
+#define DEST	RTN+RTN_SIZE
+#define SRC	DEST+PTR_SIZE
 
 	.text
 ENTRY (strcat)
+	ENTER
+
 	pushl %edi		/* Save callee-safe register.  */
 
-	movl 12(%esp), %ecx	/* load source pointer */
-	movl 8(%esp), %edx	/* load destination pointer */
+	movl DEST(%esp), %edx
+	movl SRC(%esp), %ecx
 
 	testb $0xff, (%ecx)	/* Is source string empty? */
 	jz L(8)			/* yes => return */
@@ -254,8 +256,9 @@ L(9):	movb %al, (%ecx,%edx)	/* store first byte of last word */
 
 	movb %ah, 3(%ecx,%edx)	/* store fourth byte of last word */
 
-L(8):	movl 8(%esp), %eax	/* start address of destination is result */
+L(8):	movl DEST(%esp), %eax	/* start address of destination is result */
 	popl %edi		/* restore saved register */
 
-	ret
+	LEAVE
+	RET_PTR
 END (strcat)
diff --git a/sysdeps/i386/i486/strlen.S b/sysdeps/i386/i486/strlen.S
index 4a25011016..d19a3457cf 100644
--- a/sysdeps/i386/i486/strlen.S
+++ b/sysdeps/i386/i486/strlen.S
@@ -1,6 +1,6 @@
 /* strlen(str) -- determine the length of the string STR.
    Optimized for Intel 80x86, x>=4.
-   Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
+   Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 2000 Free Software Foundation, Inc.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>.
    This file is part of the GNU C Library.
 
@@ -21,15 +21,16 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
-/*
-   INPUT PARAMETERS:
-   str		(sp + 4)
-*/
+#define PARMS	LINKAGE		/* no space for saved regs */
+#define STR	PARMS
 
 	.text
 ENTRY (strlen)
-	movl 4(%esp), %ecx	/* get string pointer */
+	ENTER
+
+	movl STR(%esp), %ecx
 	movl %ecx, %eax		/* duplicate it */
 
 	andl $3, %ecx		/* mask alignment bits */
@@ -127,7 +128,8 @@ L(3):	testb %cl, %cl		/* is first byte NUL? */
 	jz L(2)			/* yes => return pointer */
 	incl %eax		/* increment pointer */
 
-L(2):	subl 4(%esp), %eax	/* compute difference to string start */
+L(2):	subl STR(%esp), %eax	/* compute difference to string start */
 
+	LEAVE
 	ret
 END (strlen)
diff --git a/sysdeps/i386/i586/add_n.S b/sysdeps/i386/i586/add_n.S
index 8b4130b415..9bea31b068 100644
--- a/sysdeps/i386/i586/add_n.S
+++ b/sysdeps/i386/i586/add_n.S
@@ -1,6 +1,6 @@
 /* Pentium __mpn_add_n -- Add two limb vectors of the same length > 0 and store
    sum in a third limb vector.
-   Copyright (C) 1992, 94, 95, 96, 97, 98 Free Software Foundation, Inc.
+   Copyright (C) 1992, 94, 95, 96, 97, 98, 2000 Free Software Foundation, Inc.
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
@@ -18,28 +18,29 @@
    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+16		/* space for 4 saved regs */
+#define RES	PARMS
+#define S1	RES+PTR_SIZE
+#define S2	S1+PTR_SIZE
+#define SIZE	S2+PTR_SIZE
 
 	.text
 ENTRY(__mpn_add_n)
+	ENTER
+
 	pushl	%edi
 	pushl	%esi
 	pushl	%ebx
 	pushl	%ebp
 
-	movl	20(%esp),%edi		/* res_ptr */
-	movl	24(%esp),%esi		/* s1_ptr */
-	movl	28(%esp),%ebp		/* s2_ptr */
-	movl	32(%esp),%ecx		/* size */
+	movl	RES(%esp),%edi
+	movl	S1(%esp),%esi
+	movl	S2(%esp),%ebp
+	movl	SIZE(%esp),%ecx
 
 	movl	(%ebp),%ebx
 
@@ -123,5 +124,7 @@ L(end2):
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+
+	LEAVE
 	ret
 END(__mpn_add_n)
diff --git a/sysdeps/i386/i586/lshift.S b/sysdeps/i386/i586/lshift.S
index 22dc03ea65..d3f0da0062 100644
--- a/sysdeps/i386/i586/lshift.S
+++ b/sysdeps/i386/i586/lshift.S
@@ -1,5 +1,5 @@
 /* Pentium optimized __mpn_lshift --
-   Copyright (C) 1992, 94, 95, 96, 97, 98 Free Software Foundation, Inc.
+   Copyright (C) 1992, 94, 95, 96, 97, 98, 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 modify
@@ -17,28 +17,29 @@
    the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
    MA 02111-1307, USA. */
 
-/*
-  INPUT PARAMETERS
-  res_ptr	(sp + 4)
-  s_ptr		(sp + 8)
-  size		(sp + 12)
-  cnt		(sp + 16)
-*/
-
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-asm.h"
+
+#define PARMS	LINKAGE+16		/* space for 4 saved regs */
+#define RES	PARMS
+#define S	RES+PTR_SIZE
+#define SIZE	S+PTR_SIZE
+#define CNT	SIZE+4
 
-.text
+	.text
 ENTRY(__mpn_lshift)
+	ENTER
+
 	pushl	%edi
 	pushl	%esi
 	pushl	%ebx
 	pushl	%ebp
 
-	movl	20(%esp),%edi		/* res_ptr */
-	movl	24(%esp),%esi		/* s_ptr */
-	movl	28(%esp),%ebp		/* size */
-	movl	32(%esp),%ecx		/* cnt */
+	movl	RES(%esp),%edi
+	movl	S(%esp),%esi
+	movl	SIZE(%esp),%ebp
+	movl	CNT(%esp),%ecx
 
 /* We can use faster code for shift-by-1 under certain conditions.  */
 	cmp	$1,%ecx
@@ -127,6 +128,8 @@ L(end2):
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+
+	LEAVE
 	ret
 
 /* We loop from least significant end of the arrays, which is only
@@ -216,5 +219,7 @@ L(L1):	movl	%edx,(%edi)		/* store last limb */
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+
+	LEAVE
 	ret
 END(__mpn_lshift)
diff --git a/sysdeps/i386/i586/memcpy.S b/sysdeps/i386/i586/memcpy.S
index 9116c8d741..82d5e79564 100644
--- a/sysdeps/i386/i586/memcpy.S
+++ b/sysdeps/i386/i586/memcpy.S
@@ -1,5 +1,5 @@
 /* Highly optimized version for i586.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -20,23 +20,31 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
-/*
-   INPUT PARAMETERS:
-   dst          (sp + 4)
-   src          (sp + 8)
-   len		(sp + 12)
-*/
+/* BEWARE: `#ifdef memset' means that memset is redefined as `bzero' */
+#define BCOPY_P (defined memcpy)
 
+#define PARMS	LINKAGE+8	/* space for 2 saved regs */
+#if BCOPY_P
+# define DEST	PARMS
+#else
+# define RTN	PARMS
+# define DEST	RTN+RTN_SIZE
+#endif
+#define SRC	DEST+PTR_SIZE
+#define LEN	SRC+PTR_SIZE
 
         .text
 ENTRY (memcpy)
+	ENTER
+
 	pushl	%edi
 	pushl	%esi
 
-	movl	12(%esp), %edi	/* dst */
-	movl	16(%esp), %esi	/* src */
-	movl	20(%esp), %ecx	/* len */
+	movl	DEST(%esp), %edi
+	movl	SRC(%esp), %esi
+	movl	LEN(%esp), %ecx
 	movl	%edi, %eax
 
 	/* We need this in any case.  */
@@ -91,18 +99,23 @@ L(3):	movl	28(%edi), %edx
 
 	/* Correct extra loop counter modification.  */
 L(2):	addl	$32, %ecx
-#ifndef memcpy
-	movl	12(%esp), %eax	/* dst */
+#if !BCOPY_P
+	movl	DEST(%esp), %eax
 #endif
 
 L(1):	rep; movsb
 
-#ifdef memcpy
+#if BCOPY_P
 	movl	%edi, %eax
 #endif
 
 	popl	%esi
 	popl	%edi
 
+	LEAVE
+#if BCOPY_P
 	ret
+#else
+	RET_PTR
+#endif
 END (memcpy)
diff --git a/sysdeps/i386/i586/memset.S b/sysdeps/i386/i586/memset.S
index 01bed35534..8b292e92fa 100644
--- a/sysdeps/i386/i586/memset.S
+++ b/sysdeps/i386/i586/memset.S
@@ -1,6 +1,6 @@
 /* memset/bzero -- set memory area to CH/0
    Highly optimized version for ix86, x>=5.
-   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Torbjorn Granlund, <tege@matematik.su.se>
 
@@ -21,27 +21,33 @@
 
 #include <sysdep.h>
 #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 */
+#define RTN	PARMS
+#define DEST	RTN+RTN_SIZE
+#if BZERO_P
+# define LEN	DEST+PTR_SIZE
+#else
+# define CHR	DEST+PTR_SIZE
+# define LEN	CHR+4
+#endif
 
         .text
 ENTRY (memset)
+	ENTER
+
 	pushl	%edi
 
-	movl	8(%esp), %edi	/* destination pointer */
-#ifdef memset
+	movl	DEST(%esp), %edi
+	movl	LEN(%esp), %edx
+#if BZERO_P
 	xorl	%eax, %eax	/* we fill with 0 */
-	movl	12(%esp), %edx	/* size (in 8-bit words) */
 #else
-	movb	12(%esp), %al	/* use CH to fill */
-	movl	16(%esp), %edx	/* size (in 8-bit words) */
+	movb	CHR(%esp), %al
 
 	movb	%al, %ah
 	movl	%eax, %ecx
@@ -93,11 +99,16 @@ L(2):	shrl	$2, %ecx	/* convert byte count to longword count */
 	rep
 	stosb
 
+#if !BZERO_P
 	/* Load result (only if used as memset).  */
-#ifndef memset
-	movl	8(%esp), %eax
+	movl	DEST(%esp), %eax
 #endif
 	popl	%edi
 
+	LEAVE
+#if BZERO_P
 	ret
+#else
+	RET_PTR
+#endif
 END (memset)
diff --git a/sysdeps/i386/i586/rshift.S b/sysdeps/i386/i586/rshift.S
index 64e4047642..2395446d1b 100644
--- a/sysdeps/i386/i586/rshift.S
+++ b/sysdeps/i386/i586/rshift.S
@@ -1,5 +1,5 @@
 /* Pentium optimized __mpn_rshift --
-   Copyright (C) 1992, 94, 95, 96, 97, 98 Free Software Foundation, Inc.
+   Copyright (C) 1992, 94, 95, 96, 97, 98, 2000 Free Software Foundation, Inc.
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
@@ -17,28 +17,29 @@
    the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
    MA 02111-1307, USA. */
 
-/*
-  INPUT PARAMETERS
-  res_ptr	(sp + 4)
-  s_ptr		(sp + 8)
-  size		(sp + 12)
-  cnt		(sp + 16)
-*/
-
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-asm.h"
+
+#define PARMS	LINKAGE+16		/* space for 4 saved regs */
+#define RES	PARMS
+#define S	RES+PTR_SIZE
+#define SIZE	S+PTR_SIZE
+#define CNT	SIZE+4
 
-.text
+	.text
 ENTRY(__mpn_rshift)
+	ENTER
+
 	pushl	%edi
 	pushl	%esi
 	pushl	%ebx
 	pushl	%ebp
 
-	movl	20(%esp),%edi		/* res_ptr */
-	movl	24(%esp),%esi		/* s_ptr */
-	movl	28(%esp),%ebp		/* size */
-	movl	32(%esp),%ecx		/* cnt */
+	movl	RES(%esp),%edi
+	movl	S(%esp),%esi
+	movl	SIZE(%esp),%ebp
+	movl	CNT(%esp),%ecx
 
 /* We can use faster code for shift-by-1 under certain conditions.  */
 	cmp	$1,%ecx
@@ -124,6 +125,8 @@ L(end2):
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+
+	LEAVE
 	ret
 
 /* We loop from least significant end of the arrays, which is only
@@ -216,5 +219,7 @@ L(L1):	movl	%edx,(%edi)		/* store last limb */
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+
+	LEAVE
 	ret
 END(__mpn_rshift)
diff --git a/sysdeps/i386/i586/strchr.S b/sysdeps/i386/i586/strchr.S
index e351853231..bf351f605e 100644
--- a/sysdeps/i386/i586/strchr.S
+++ b/sysdeps/i386/i586/strchr.S
@@ -1,6 +1,6 @@
 /* Find character CH in a NUL terminated string.
    Highly optimized version for ix85, 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
@@ -35,22 +36,23 @@
 /* The magic value which is used throughout in the whole code.  */
 #define magic 0xfefefeff
 
-/*
-   INPUT PARAMETERS:
-   str		(sp + 4)
-   ch		(sp + 8)
-*/
+#define PARMS	LINKAGE+16	/* space for 4 saved regs */
+#define RTN	PARMS
+#define STR	RTN+RTN_SIZE
+#define CHR	STR+PTR_SIZE
 
 	.text
 ENTRY (strchr)
+	ENTER
+
 	pushl %edi		/* Save callee-safe registers.  */
 	pushl %esi
 
 	pushl %ebx
 	pushl %ebp
 
-	movl 20(%esp), %eax	/* get string pointer */
-	movl 24(%esp), %edx	/* get character we are looking for */
+	movl STR(%esp), %eax
+	movl CHR(%esp), %edx
 
 	movl %eax, %edi		/* duplicate string pointer for later */
 	xorl %ecx, %ecx		/* clear %ecx */
@@ -283,7 +285,8 @@ L(2):	popl %ebp		/* restore saved registers */
 	popl %esi
 	popl %edi
 
-	ret
+	LEAVE
+	RET_PTR
 
 	/* We know there is a NUL byte in the word.  But we have to test
 	   whether there is an C byte before it in the word.  */
@@ -326,7 +329,8 @@ L(3):	xorl %eax, %eax		/* set return value = NULL */
 	popl %esi
 	popl %edi
 
-	ret
+	LEAVE
+	RET_PTR
 END (strchr)
 
 #undef index
diff --git a/sysdeps/i386/i586/strcpy.S b/sysdeps/i386/i586/strcpy.S
index 7f89a2c0f7..a48fbb68f8 100644
--- a/sysdeps/i386/i586/strcpy.S
+++ b/sysdeps/i386/i586/strcpy.S
@@ -1,5 +1,5 @@
 /* strcpy/stpcpy implementation for i586.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -20,6 +20,12 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
+
+#define PARMS	LINKAGE+12	/* space for 3 saved regs */
+#define RTN	PARMS
+#define DEST	RTN+RTN_SIZE
+#define SRC	DEST+PTR_SIZE
 
 #ifndef USE_AS_STPCPY
 # define STRCPY strcpy
@@ -29,12 +35,14 @@
 
 	.text
 ENTRY(STRCPY)
+	ENTER
+
 	pushl	%edi
 	pushl	%esi
 	pushl	%ebx
 
-	movl	16(%esp), %edi
-	movl	20(%esp), %esi
+	movl	DEST(%esp), %edi
+	movl	SRC(%esp), %esi
 
 	xorl	%eax, %eax
 	leal	-1(%esi), %ecx
@@ -136,12 +144,13 @@ L(end):	movb	%ah, (%edi)
 L(end2):
 #ifdef USE_AS_STPCPY
 	movl	%edi, %eax
+#else
+	movl	DEST(%esp), %eax
 #endif
 	popl	%ebx
 	popl	%esi
 	popl	%edi
-#ifndef USE_AS_STPCPY
-	movl	4(%esp), %eax
-#endif
-	ret
+
+	LEAVE
+	RET_PTR
 END(STRCPY)
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)
diff --git a/sysdeps/i386/i586/sub_n.S b/sysdeps/i386/i586/sub_n.S
index 03c85d9aa6..dbfb5d2865 100644
--- a/sysdeps/i386/i586/sub_n.S
+++ b/sysdeps/i386/i586/sub_n.S
@@ -1,6 +1,6 @@
 /* Pentium __mpn_sub_n -- Subtract two limb vectors of the same length > 0
    and store difference in a third limb vector.
-   Copyright (C) 1992, 94, 95, 96, 97, 98 Free Software Foundation, Inc.
+   Copyright (C) 1992, 94, 95, 96, 97, 98, 2000 Free Software Foundation, Inc.
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
@@ -18,28 +18,29 @@
    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+16		/* space for 4 saved regs */
+#define RES	PARMS
+#define S1	RES+PTR_SIZE
+#define S2	S1+PTR_SIZE
+#define SIZE	S2+PTR_SIZE
 
 	.text
 ENTRY(__mpn_sub_n)
+	ENTER
+
 	pushl	%edi
 	pushl	%esi
 	pushl	%ebx
 	pushl	%ebp
 
-	movl	20(%esp),%edi		/* res_ptr */
-	movl	24(%esp),%esi		/* s1_ptr */
-	movl	28(%esp),%ebp		/* s2_ptr */
-	movl	32(%esp),%ecx		/* size */
+	movl	RES(%esp),%edi
+	movl	S1(%esp),%esi
+	movl	S2(%esp),%ebp
+	movl	SIZE(%esp),%ecx
 
 	movl	(%ebp),%ebx
 
@@ -123,5 +124,7 @@ L(end2):
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+
+	LEAVE
 	ret
 END(__mpn_sub_n)
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 <drepper@cygnus.com>, 1999.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -21,20 +21,23 @@
 
 #include <sysdep.h>
 #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 <drepper@cygnus.com>, 1998.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -21,20 +21,23 @@
 
 #include <sysdep.h>
 #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 <drepper@cygnus.com>, 1999.
 
@@ -21,27 +21,34 @@
 
 #include <sysdep.h>
 #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 <drepper@cygnus.com>, 1999.
 
@@ -20,29 +20,34 @@
 
 #include <sysdep.h>
 #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)
diff --git a/sysdeps/i386/lshift.S b/sysdeps/i386/lshift.S
index 737ce3ed2b..2e4c2ca3be 100644
--- a/sysdeps/i386/lshift.S
+++ b/sysdeps/i386/lshift.S
@@ -1,5 +1,5 @@
 /* i80386 __mpn_lshift --
-   Copyright (C) 1992, 1994, 1997, 1998, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1994, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
@@ -17,27 +17,28 @@
    the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
    MA 02111-1307, USA. */
 
-/*
-  INPUT PARAMETERS
-  res_ptr	(sp + 4)
-  s_ptr		(sp + 8)
-  size		(sp + 12)
-  cnt		(sp + 16)
-*/
-
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-asm.h"
+
+#define PARMS	LINKAGE+12		/* space for 3 saved regs */
+#define RES	PARMS
+#define S	RES+PTR_SIZE
+#define SIZE	S+PTR_SIZE
+#define CNT	SIZE+4
 
 	.text
 ENTRY(__mpn_lshift)
+	ENTER
+
 	pushl	%edi
 	pushl	%esi
 	pushl	%ebx
 
-	movl	16(%esp),%edi		/* res_ptr */
-	movl	20(%esp),%esi		/* s_ptr */
-	movl	24(%esp),%edx		/* size */
-	movl	28(%esp),%ecx		/* cnt */
+	movl	RES(%esp),%edi
+	movl	S(%esp),%esi
+	movl	SIZE(%esp),%edx
+	movl	CNT(%esp),%ecx
 
 	subl	$4,%esi			/* adjust s_ptr */
 
@@ -70,6 +71,8 @@ L(1):	movl	(%esi,%edx,4),%eax
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+
+	LEAVE
 	ret
 
 L(end):	shll	%cl,%ebx		/* compute least significant limb */
@@ -78,5 +81,7 @@ L(end):	shll	%cl,%ebx		/* compute least significant limb */
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+
+	LEAVE
 	ret
 END(__mpn_lshift)
diff --git a/sysdeps/i386/memchr.S b/sysdeps/i386/memchr.S
index 1750aa8e26..80b210737b 100644
--- a/sysdeps/i386/memchr.S
+++ b/sysdeps/i386/memchr.S
@@ -1,7 +1,7 @@
-/* memchr (str, ch, n) -- Return pointer to first occurrence of CH in STR less
-   than N.
+/* memchr (str, chr, len) -- Return pointer to first occurrence of CHR in STR less
+   than LEN.
    For Intel 80x86, x>=3.
-   Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1994, 1995, 1996, 1997, 1998, 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>
@@ -32,32 +32,34 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
-/*
-   INPUT PARAMETERS:
-   str		(sp + 4)
-   c		(sp + 8)
-   len		(sp + 12)
-*/
+#define PARMS	LINKAGE+8		/* space for 2 saved regs */
+#define RTN	PARMS
+#define STR	RTN+RTN_SIZE
+#define CHR	STR+PTR_SIZE
+#define LEN	CHR+4
 
 	.text
 ENTRY (memchr)
+	ENTER
+
 	/* Save callee-safe registers used in this function.  */
 	pushl %esi
 	pushl %edi
 
 	/* Load parameters into registers.  */
-	movl 12(%esp), %eax	/* str: pointer to memory block.  */
-	movl 16(%esp), %edx	/* c: byte we are looking for.  */
-	movl 20(%esp), %esi	/* len: length of memory block.  */
+	movl STR(%esp), %eax	/* str: pointer to memory block.  */
+	movl CHR(%esp), %edx	/* c: byte we are looking for.  */
+	movl LEN(%esp), %esi	/* len: length of memory block.  */
 
 	/* If my must not test more than three characters test
 	   them one by one.  This is especially true for 0.  */
 	cmpl $4, %esi
 	jb L(3)
 
-	/* At the moment %edx contains C.  What we need for the
-	   algorithm is C in all bytes of the dword.  Avoid
+	/* At the moment %edx contains CHR.  What we need for the
+	   algorithm is CHR in all bytes of the dword.  Avoid
 	   operations on 16 bit words because these require an
 	   prefix byte (and one more cycle).  */
 	movb %dl, %dh		/* Now it is 0|0|c|c */
@@ -117,9 +119,9 @@ ENTRY (memchr)
 	 into bit 32 (=carry flag), so all of the hole bits will
 	 be changed.
 
-	 3) But wait!  Aren't we looking for C, not zero?
+	 3) But wait!  Aren't we looking for CHR, not zero?
 	 Good point.  So what we do is XOR LONGWORD with a longword,
-	 each of whose bytes is C.  This turns each byte that is C
+	 each of whose bytes is CHR.  This turns each byte that is CHR
 	 into a zero.  */
 
 
@@ -152,7 +154,7 @@ L(1):	movl (%eax), %ecx	/* get word (= 4 bytes) in question */
 	incl %edi		/* add 1: if one carry bit was *not* set
 				   the addition will not result in 0.  */
 
-	/* If at least one byte of the word is C we don't get 0 in %edi.  */
+	/* If at least one byte of the word is CHR we don't get 0 in %edi.  */
 	jnz L(8)		/* found it => return pointer */
 
 	/* This process is unfolded four times for better performance.
@@ -169,7 +171,7 @@ L(1):	movl (%eax), %ecx	/* get word (= 4 bytes) in question */
 	addl %ecx, %edi		/* add the magic value to the word.  We get
 				   carry bits reported for each byte which
 				   is *not* 0 */
-	jnc L(7)		/* highest byte is C => return pointer */
+	jnc L(7)		/* highest byte is CHR => return pointer */
 	xorl %ecx, %edi		/* ((word^charmask)+magic)^(word^charmask) */
 	orl $0xfefefeff, %edi	/* set all non-carry bits */
 	incl %edi		/* add 1: if one carry bit was *not* set
@@ -183,7 +185,7 @@ L(1):	movl (%eax), %ecx	/* get word (= 4 bytes) in question */
 	addl %ecx, %edi		/* add the magic value to the word.  We get
 				   carry bits reported for each byte which
 				   is *not* 0 */
-	jnc L(6)		/* highest byte is C => return pointer */
+	jnc L(6)		/* highest byte is CHR => return pointer */
 	xorl %ecx, %edi		/* ((word^charmask)+magic)^(word^charmask) */
 	orl $0xfefefeff, %edi	/* set all non-carry bits */
 	incl %edi		/* add 1: if one carry bit was *not* set
@@ -197,7 +199,7 @@ L(1):	movl (%eax), %ecx	/* get word (= 4 bytes) in question */
 	addl %ecx, %edi		/* add the magic value to the word.  We get
 				   carry bits reported for each byte which
 				   is *not* 0 */
-	jnc L(5)		/* highest byte is C => return pointer */
+	jnc L(5)		/* highest byte is CHR => return pointer */
 	xorl %ecx, %edi		/* ((word^charmask)+magic)^(word^charmask) */
 	orl $0xfefefeff, %edi	/* set all non-carry bits */
 	incl %edi		/* add 1: if one carry bit was *not* set
@@ -220,7 +222,7 @@ L(2):	subl $16, %esi
 	addl %ecx, %edi		/* add the magic value to the word.  We get
 				   carry bits reported for each byte which
 				   is *not* 0 */
-	jnc L(8)		/* highest byte is C => return pointer */
+	jnc L(8)		/* highest byte is CHR => return pointer */
 	xorl %ecx, %edi		/* ((word^charmask)+magic)^(word^charmask) */
 	orl $0xfefefeff, %edi	/* set all non-carry bits */
 	incl %edi		/* add 1: if one carry bit was *not* set
@@ -238,7 +240,7 @@ L(2):	subl $16, %esi
 	addl %ecx, %edi		/* add the magic value to the word.  We get
 				   carry bits reported for each byte which
 				   is *not* 0 */
-	jnc L(8)		/* highest byte is C => return pointer */
+	jnc L(8)		/* highest byte is CHR => return pointer */
 	xorl %ecx, %edi		/* ((word^charmask)+magic)^(word^charmask) */
 	orl $0xfefefeff, %edi	/* set all non-carry bits */
 	incl %edi		/* add 1: if one carry bit was *not* set
@@ -256,7 +258,7 @@ L(2):	subl $16, %esi
 	addl %ecx, %edi		/* add the magic value to the word.  We get
 				   carry bits reported for each byte which
 				   is *not* 0 */
-	jnc L(8)		/* highest byte is C => return pointer */
+	jnc L(8)		/* highest byte is CHR => return pointer */
 	xorl %ecx, %edi		/* ((word^charmask)+magic)^(word^charmask) */
 	orl $0xfefefeff, %edi	/* set all non-carry bits */
 	incl %edi		/* add 1: if one carry bit was *not* set
@@ -268,19 +270,19 @@ L(2):	subl $16, %esi
 L(3):	andl $3, %esi		/* mask out uninteresting bytes */
 	jz L(4)			/* no remaining bytes => return NULL */
 
-	cmpb %dl, (%eax)	/* compare byte with C */
+	cmpb %dl, (%eax)	/* compare byte with CHR */
 	je L(9)			/* equal, than return pointer */
 	incl %eax		/* increment source pointer */
 	decl %esi		/* decrement length */
 	jz L(4)			/* no remaining bytes => return NULL */
 
-	cmpb %dl, (%eax)	/* compare byte with C */
+	cmpb %dl, (%eax)	/* compare byte with CHR */
 	je L(9)			/* equal, than return pointer */
 	incl %eax		/* increment source pointer */
 	decl %esi		/* decrement length */
 	jz L(4)			/* no remaining bytes => return NULL */
 
-	cmpb %dl, (%eax)	/* compare byte with C */
+	cmpb %dl, (%eax)	/* compare byte with CHR */
 	je L(9)			/* equal, than return pointer */
 
 L(4):	/* no byte found => return NULL */
@@ -312,5 +314,6 @@ L(8):	testb %cl, %cl		/* test first byte in dword */
 L(9):	popl %edi		/* pop saved registers */
 	popl %esi
 
-	ret
+	LEAVE
+	RET_PTR
 END (memchr)
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)
 
diff --git a/sysdeps/i386/mul_1.S b/sysdeps/i386/mul_1.S
index 459f6239fb..9b125e7c7b 100644
--- a/sysdeps/i386/mul_1.S
+++ b/sysdeps/i386/mul_1.S
@@ -1,6 +1,6 @@
 /* i80386 __mpn_mul_1 -- Multiply a limb vector with a limb and store
    the result in a second limb vector.
-   Copyright (C) 1992, 1994, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1994, 1997, 1998, 2000 Free Software Foundation, Inc.
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
@@ -28,6 +28,13 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
+
+#define PARMS	LINKAGE+16	/* space for 4 saved regs */
+#define RES	PARMS
+#define S1	RES+PTR_SIZE
+#define SIZE	S1+PTR_SIZE
+#define S2LIMB	SIZE+4
 
 #define res_ptr edi
 #define s1_ptr esi
@@ -36,16 +43,17 @@
 
 	.text
 ENTRY(__mpn_mul_1)
+	ENTER
 
 	INSN1(push,l	,R(edi))
 	INSN1(push,l	,R(esi))
 	INSN1(push,l	,R(ebx))
 	INSN1(push,l	,R(ebp))
 
-	INSN2(mov,l	,R(res_ptr),MEM_DISP(esp,20))
-	INSN2(mov,l	,R(s1_ptr),MEM_DISP(esp,24))
-	INSN2(mov,l	,R(size),MEM_DISP(esp,28))
-	INSN2(mov,l	,R(s2_limb),MEM_DISP(esp,32))
+	INSN2(mov,l	,R(res_ptr),MEM_DISP(esp,RES))
+	INSN2(mov,l	,R(s1_ptr),MEM_DISP(esp,S1))
+	INSN2(mov,l	,R(size),MEM_DISP(esp,SIZE))
+	INSN2(mov,l	,R(s2_limb),MEM_DISP(esp,S2LIMB))
 
 	INSN2(lea,l	,R(res_ptr),MEM_INDEX(res_ptr,size,4))
 	INSN2(lea,l	,R(s1_ptr),MEM_INDEX(s1_ptr,size,4))
@@ -68,6 +76,8 @@ L(oop):
 	INSN1(pop,l	,R(ebx))
 	INSN1(pop,l	,R(esi))
 	INSN1(pop,l	,R(edi))
+
+	LEAVE
 	ret
 #undef size
 END(__mpn_mul_1)
diff --git a/sysdeps/i386/rawmemchr.S b/sysdeps/i386/rawmemchr.S
index 83626e0473..89ba8d3857 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)
diff --git a/sysdeps/i386/rshift.S b/sysdeps/i386/rshift.S
index 0bb7288d31..c8a6a9feb0 100644
--- a/sysdeps/i386/rshift.S
+++ b/sysdeps/i386/rshift.S
@@ -1,5 +1,5 @@
 /* i80386 __mpn_rshift --
-   Copyright (C) 1992, 1994, 1997, 1998, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1994, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
@@ -17,27 +17,28 @@
    the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
    MA 02111-1307, USA. */
 
-/*
-  INPUT PARAMETERS
-  res_ptr	(sp + 4)
-  s_ptr		(sp + 8)
-  size		(sp + 12)
-  cnt		(sp + 16)
-*/
-
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-asm.h"
+
+#define PARMS	LINKAGE+12		/* space for 3 saved regs */
+#define RES	PARMS
+#define S	RES+PTR_SIZE
+#define SIZE	S+PTR_SIZE
+#define CNT	SIZE+4
 
 	.text
 ENTRY(__mpn_rshift)
+	ENTER
+
 	pushl	%edi
 	pushl	%esi
 	pushl	%ebx
 
-	movl	16(%esp),%edi		/* res_ptr */
-	movl	20(%esp),%esi		/* s_ptr */
-	movl	24(%esp),%edx		/* size */
-	movl	28(%esp),%ecx		/* cnt */
+	movl	RES(%esp),%edi
+	movl	S(%esp),%esi
+	movl	SIZE(%esp),%edx
+	movl	CNT(%esp),%ecx
 
 	leal	-4(%edi,%edx,4),%edi
 	leal	(%esi,%edx,4),%esi
@@ -72,6 +73,8 @@ L(1):	movl	(%esi,%edx,4),%eax
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+
+	LEAVE
 	ret
 
 L(end):	shrl	%cl,%ebx		/* compute most significant limb */
@@ -80,5 +83,7 @@ L(end):	shrl	%cl,%ebx		/* compute most significant limb */
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+
+	LEAVE
 	ret
 END(__mpn_rshift)
diff --git a/sysdeps/i386/stpcpy.S b/sysdeps/i386/stpcpy.S
index 751e22c1c6..f8267c7d1e 100644
--- a/sysdeps/i386/stpcpy.S
+++ b/sysdeps/i386/stpcpy.S
@@ -1,6 +1,6 @@
 /* Copy SRC to DEST returning the address of the terminating '\0' in DEST.
    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).
 
@@ -24,18 +24,19 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
-/*
-   INPUT PARAMETERS:
-   dest		(sp + 4)
-   src		(sp + 8)
-*/
+#define PARMS	LINKAGE		/* no space for saved regs */
+#define RTN	PARMS
+#define DEST	RTN+RTN_SIZE
+#define SRC	DEST+PTR_SIZE
 
 	.text
 ENTRY (__stpcpy)
-	movl 4(%esp), %eax	/* load destination pointer */
-	movl 8(%esp), %ecx	/* load source pointer */
+	ENTER
 
+	movl DEST(%esp), %eax
+	movl SRC(%esp), %ecx
 	subl %eax, %ecx		/* magic: reduce number of loop variants
 				   to one using addressing mode */
 
@@ -81,7 +82,9 @@ L(1):	addl $4, %eax		/* increment loop counter */
 L(4):	incl %eax
 L(3):	incl %eax
 L(2):
-	ret
+
+	LEAVE
+	RET_PTR
 END (__stpcpy)
 
 weak_alias (__stpcpy, stpcpy)
diff --git a/sysdeps/i386/stpncpy.S b/sysdeps/i386/stpncpy.S
index e0213082f8..cd1a84558f 100644
--- a/sysdeps/i386/stpncpy.S
+++ b/sysdeps/i386/stpncpy.S
@@ -1,7 +1,7 @@
 /* copy no more then N bytes from SRC to DEST, returning the address of
    the terminating '\0' in DEST.
    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 bug fixes by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au>
@@ -26,22 +26,23 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
-/*
-   INPUT PARAMETERS:
-   dest		(sp + 4)
-   src		(sp + 8)
-   maxlen	(sp + 12)
-*/
+#define PARMS	LINKAGE+4	/* space for 1 saved reg */
+#define RTN	PARMS
+#define DEST	RTN+RTN_SIZE
+#define SRC	DEST+PTR_SIZE
+#define LEN	SRC+PTR_SIZE
 
 	.text
 ENTRY (__stpncpy)
+	ENTER
 
 	pushl %esi
 
-	movl 8(%esp), %eax	/* load destination pointer */
-	movl 12(%esp), %esi	/* load source pointer */
-	movl 16(%esp), %ecx	/* load maximal length */
+	movl DEST(%esp), %eax
+	movl SRC(%esp), %esi
+	movl LEN(%esp), %ecx
 
 	subl %eax, %esi		/* magic: reduce number of loop variants
 				   to one using addressing mode */
@@ -138,7 +139,8 @@ L(3):	decl %ecx		/* all bytes written? */
 
 L(9):	popl %esi		/* restore saved register content */
 
-	ret
+	LEAVE
+	RET_PTR
 END (__stpncpy)
 
 weak_alias (__stpncpy, stpncpy)
diff --git a/sysdeps/i386/strchr.S b/sysdeps/i386/strchr.S
index 582c3d737a..0bb28bc9be 100644
--- a/sysdeps/i386/strchr.S
+++ b/sysdeps/i386/strchr.S
@@ -1,6 +1,6 @@
 /* strchr (str, ch) -- Return pointer to first occurrence of CH in STR.
    For Intel 80x86, x>=3.
-   Copyright (C) 1994, 1995, 1996, 1997, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1994, 1995, 1996, 1997, 1999, 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>
@@ -22,19 +22,20 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
-/*
-   INPUT PARAMETERS:
-   str		(sp + 4)
-   ch		(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 (strchr)
-	pushl %edi		/* Save callee-safe registers used here.  */
+	ENTER
 
-	movl 8(%esp), %eax	/* get string pointer */
-	movl 12(%esp), %edx	/* get character we are looking for */
+	pushl %edi		/* Save callee-safe registers used here.  */
+	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
@@ -240,7 +241,9 @@ L(11):	movl (%eax), %ecx	/* get word (= 4 bytes) in question */
 L(2):	/* Return NULL.  */
 	xorl %eax, %eax		/* load NULL in return value register */
 	popl %edi		/* restore saved register content */
-	ret
+
+	LEAVE
+	RET_PTR
 
 L(73):	addl $4, %eax		/* adjust pointer */
 L(72):	addl $4, %eax
@@ -273,7 +276,8 @@ L(7):	testb %cl, %cl		/* is first byte C? */
 
 L(6):	popl %edi		/* restore saved register content */
 
-	ret
+	LEAVE
+	RET_PTR
 END (strchr)
 
 weak_alias (strchr, index)
diff --git a/sysdeps/i386/strchrnul.S b/sysdeps/i386/strchrnul.S
index f42a69728c..6860a11d7a 100644
--- a/sysdeps/i386/strchrnul.S
+++ b/sysdeps/i386/strchrnul.S
@@ -1,7 +1,7 @@
-/* strchrnul (str, ch) -- Return pointer to first occurrence of CH in STR
+/* strchrnul (str, chr) -- Return pointer to first occurrence of CHR in STR
    or the final NUL byte.
    For Intel 80x86, x>=3.
-   Copyright (C) 1994, 1995, 1996, 1997, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1994, 1995, 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.org>
    Some optimisations by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au>
@@ -23,22 +23,24 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
-/*
-   INPUT PARAMETERS:
-   str		(sp + 4)
-   ch		(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 (__strchrnul)
+	ENTER
+
 	pushl %edi		/* Save callee-safe registers used here.  */
 
-	movl 8(%esp), %eax	/* get string pointer */
-	movl 12(%esp), %edx	/* get character 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
+	/* At the moment %edx contains CHR.  What we need for the
+	   algorithm is CHR in all bytes of the dword.  Avoid
 	   operations on 16 bit words because these require an
 	   prefix byte (and one more cycle).  */
 	movb %dl, %dh		/* now it is 0|0|c|c */
@@ -108,9 +110,9 @@ ENTRY (__strchrnul)
 	 into bit 32 (=carry flag), so all of the hole bits will
 	 be changed.
 
-	 3) But wait!  Aren't we looking for C, not zero?
+	 3) But wait!  Aren't we looking for CHR, not zero?
 	 Good point.  So what we do is XOR LONGWORD with a longword,
-	 each of whose bytes is C.  This turns each byte that is C
+	 each of whose bytes is CHR.  This turns each byte that is CHR
 	 into a zero.  */
 
 	/* Each round the main loop processes 16 bytes.  */
@@ -125,7 +127,7 @@ L(11):	movl (%eax), %ecx	/* get word (= 4 bytes) in question */
 	movl $0xfefefeff, %edi	/* magic value */
 	addl %ecx, %edi		/* add the magic value to the word.  We get
 				   carry bits reported for each byte which
-				   is *not* C */
+				   is *not* CHR */
 
 	/* According to the algorithm we had to reverse the effect of the
 	   XOR first and then test the overflow bits.  But because the
@@ -144,7 +146,7 @@ L(11):	movl (%eax), %ecx	/* get word (= 4 bytes) in question */
 	incl %edi		/* add 1: if one carry bit was *not* set
 				   the addition will not result in 0.  */
 
-	/* If at least one byte of the word is C we don't get 0 in %edi.  */
+	/* If at least one byte of the word is CHR we don't get 0 in %edi.  */
 	jnz L(7)		/* found it => return pointer */
 
 	/* Now we made sure the dword does not contain the character we are
@@ -169,8 +171,8 @@ L(11):	movl (%eax), %ecx	/* get word (= 4 bytes) in question */
 	movl $0xfefefeff, %edi	/* magic value */
 	addl %ecx, %edi		/* add the magic value to the word.  We get
 				   carry bits reported for each byte which
-				   is *not* C */
-	jnc L(71)		/* highest byte is C => return pointer */
+				   is *not* CHR */
+	jnc L(71)		/* highest byte is CHR => return pointer */
 	xorl %ecx, %edi		/* ((word^charmask)+magic)^(word^charmask) */
 	orl $0xfefefeff, %edi	/* set all non-carry bits */
 	incl %edi		/* add 1: if one carry bit was *not* set
@@ -194,8 +196,8 @@ L(11):	movl (%eax), %ecx	/* get word (= 4 bytes) in question */
 	movl $0xfefefeff, %edi	/* magic value */
 	addl %ecx, %edi		/* add the magic value to the word.  We get
 				   carry bits reported for each byte which
-				   is *not* C */
-	jnc L(72)		/* highest byte is C => return pointer */
+				   is *not* CHR */
+	jnc L(72)		/* highest byte is CHR => return pointer */
 	xorl %ecx, %edi		/* ((word^charmask)+magic)^(word^charmask) */
 	orl $0xfefefeff, %edi	/* set all non-carry bits */
 	incl %edi		/* add 1: if one carry bit was *not* set
@@ -219,8 +221,8 @@ L(11):	movl (%eax), %ecx	/* get word (= 4 bytes) in question */
 	movl $0xfefefeff, %edi	/* magic value */
 	addl %ecx, %edi		/* add the magic value to the word.  We get
 				   carry bits reported for each byte which
-				   is *not* C */
-	jnc L(73)		/* highest byte is C => return pointer */
+				   is *not* CHR */
+	jnc L(73)		/* highest byte is CHR => return pointer */
 	xorl %ecx, %edi		/* ((word^charmask)+magic)^(word^charmask) */
 	orl $0xfefefeff, %edi	/* set all non-carry bits */
 	incl %edi		/* add 1: if one carry bit was *not* set
@@ -246,20 +248,20 @@ L(71):	addl $4, %eax
 	   But we have to take care of the case that a NUL char is
 	   found before this in the dword.  */
 
-L(7):	testb %cl, %cl		/* is first byte C? */
+L(7):	testb %cl, %cl		/* is first byte CHR? */
 	jz L(6)			/* yes => return pointer */
 	cmpb %dl, %cl		/* is first byte NUL? */
 	je L(6)			/* yes => return NULL */
 	incl %eax		/* it's not in the first byte */
 
-	testb %ch, %ch		/* is second byte C? */
+	testb %ch, %ch		/* is second byte CHR? */
 	jz L(6)			/* yes => return pointer */
 	cmpb %dl, %ch		/* is second byte NUL? */
 	je L(6)			/* yes => return NULL? */
 	incl %eax		/* it's not in the second byte */
 
 	shrl $16, %ecx		/* make upper byte accessible */
-	testb %cl, %cl		/* is third byte C? */
+	testb %cl, %cl		/* is third byte CHR? */
 	jz L(6)			/* yes => return pointer */
 	cmpb %dl, %cl		/* is third byte NUL? */
 	je L(6)			/* yes => return NULL */
@@ -269,7 +271,8 @@ L(7):	testb %cl, %cl		/* is first byte C? */
 
 L(6):	popl %edi		/* restore saved register content */
 
-	ret
+	LEAVE
+	RET_PTR
 END (__strchrnul)
 
 weak_alias (__strchrnul, strchrnul)
diff --git a/sysdeps/i386/strcspn.S b/sysdeps/i386/strcspn.S
index f2c53122b5..e7529a15c8 100644
--- a/sysdeps/i386/strcspn.S
+++ b/sysdeps/i386/strcspn.S
@@ -1,7 +1,7 @@
 /* strcspn (str, ss) -- Return the length of the initial segment of STR
 			which contains no characters from SS.
    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>
    Bug fixes by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au>
@@ -23,17 +23,18 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
-/*
-   INPUT PARAMETERS:
-   str		(sp + 4)
-   stopset	(sp + 8)
-*/
+#define PARMS	LINKAGE		/* no space for saved regs */
+#define STR	PARMS
+#define STOP	STR+PTR_SIZE
 
 	.text
 ENTRY (strcspn)
-	movl 4(%esp), %edx	/* get string pointer */
-	movl 8(%esp), %eax	/* get stopset pointer */
+	ENTER
+
+	movl STR(%esp), %edx
+	movl STOP(%esp), %eax
 
 	/* First we create a table with flags for all possible characters.
 	   For the ASCII (7bit/8bit) or ISO-8859-X character sets which are
@@ -173,5 +174,6 @@ L(4):	subl %edx, %eax		/* we have to return the number of valid
 				   non-valid character */
 	addl $256, %esp		/* remove stopset */
 
+	LEAVE
 	ret
 END (strcspn)
diff --git a/sysdeps/i386/strpbrk.S b/sysdeps/i386/strpbrk.S
index ff0990272a..59d65540ab 100644
--- a/sysdeps/i386/strpbrk.S
+++ b/sysdeps/i386/strpbrk.S
@@ -1,7 +1,7 @@
 /* strcspn (str, ss) -- Return the length of the initial segement of STR
 			which contains no characters from SS.
    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.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>
    Bug fixes by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au>
    This file is part of the GNU C Library.
@@ -23,17 +23,19 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
-/*
-   INPUT PARAMETERS:
-   str		(sp + 4)
-   stopset	(sp + 8)
-*/
+#define PARMS	LINKAGE		/* no space for saved regs */
+#define RTN	PARMS
+#define STR	RTN+RTN_SIZE
+#define STOP	STR+PTR_SIZE
 
 	.text
 ENTRY (strpbrk)
-	movl 4(%esp), %edx	/* get string pointer */
-	movl 8(%esp), %eax	/* get stopset pointer */
+	ENTER
+
+	movl STR(%esp), %edx
+	movl STOP(%esp), %eax
 
 	/* First we create a table with flags for all possible characters.
 	   For the ASCII (7bit/8bit) or ISO-8859-X character sets which are
@@ -174,5 +176,6 @@ L(4):	addl $256, %esp		/* remove stopset */
 	jnz L(7)			/* no => return pointer */
 	xorl %eax, %eax		/* return NULL */
 
-L(7):	ret
+L(7):	LEAVE
+	RET_PTR
 END (strpbrk)
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)
diff --git a/sysdeps/i386/strspn.S b/sysdeps/i386/strspn.S
index 9f83adcc27..cfd11f0a9f 100644
--- a/sysdeps/i386/strspn.S
+++ b/sysdeps/i386/strspn.S
@@ -1,7 +1,7 @@
 /* strcspn (str, ss) -- Return the length of the initial segment of STR
 			which contains only characters from SS.
    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>
    Bug fixes by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au>
@@ -23,17 +23,18 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
-/*
-   INPUT PARAMETERS:
-   str		(sp + 4)
-   skipset	(sp + 8)
-*/
+#define PARMS	LINKAGE		/* no space for saved regs */
+#define STR	PARMS
+#define SKIP	STR+PTR_SIZE
 
 	.text
 ENTRY (strspn)
-	movl 4(%esp), %edx	/* get string pointer */
-	movl 8(%esp), %eax	/* get skipset pointer */
+	ENTER
+
+	movl STR(%esp), %edx
+	movl SKIP(%esp), %eax
 
 	/* First we create a table with flags for all possible characters.
 	   For the ASCII (7bit/8bit) or ISO-8859-X character sets which are
@@ -173,5 +174,6 @@ L(4):	subl %edx, %eax		/* we have to return the number of valid
 				   non-valid character */
 	addl $256, %esp		/* remove stopset */
 
+	LEAVE
 	ret
 END (strspn)
diff --git a/sysdeps/i386/strtok.S b/sysdeps/i386/strtok.S
index c6469e8ecf..6fa6cc2d0c 100644
--- a/sysdeps/i386/strtok.S
+++ b/sysdeps/i386/strtok.S
@@ -1,6 +1,6 @@
 /* strtok (str, delim) -- Return next DELIM separated token from STR.
    For Intel 80x86, x>=3.
-   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
@@ -21,6 +21,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-asm.h"
 
 /* This file can be used for three variants of the strtok function:
 
@@ -48,12 +49,19 @@ save_ptr:
 #define FUNCTION strtok
 #endif
 
+#define PARMS	LINKAGE		/* no space for saved regs */
+#define RTN	PARMS
+#define STR	RTN+RTN_SIZE
+#define DELIM	STR+PTR_SIZE
+#define SAVE	DELIM+PTR_SIZE
+
 	.text
 
 ENTRY (FUNCTION)
+	ENTER
 
-	movl 4(%esp), %edx		/* Get start of string.  */
-	movl 8(%esp), %eax		/* Get start of delimiter set.  */
+	movl STR(%esp), %edx
+	movl DELIM(%esp), %eax
 
 #if !defined (USE_AS_STRTOK_R) && defined (PIC)
 	pushl %ebx			/* Save PIC register.  */
@@ -70,7 +78,7 @@ L(here):
 
 #ifdef USE_AS_STRTOK_R
 	/* The value is stored in the third argument.  */
-	movl 12(%esp), %edx
+	movl SAVE(%esp), %edx
 	movl (%edx), %edx
 #else
 	/* The value is in the local variable defined above.  But
@@ -257,7 +265,7 @@ L(11):
 L(return):
 	/* Store the pointer to the next character.  */
 #ifdef USE_AS_STRTOK_R
-	movl 12(%esp), %ecx
+	movl SAVE(%esp), %ecx
 	movl %edx, (%ecx)
 #else
 # ifndef PIC
@@ -267,7 +275,8 @@ L(return):
 	popl %ebx
 # endif
 #endif
-	ret
+	LEAVE
+	RET_PTR
 
 L(returnNULL):
 	xorl %eax, %eax
diff --git a/sysdeps/i386/sub_n.S b/sysdeps/i386/sub_n.S
index ef9a8292e2..94cb070504 100644
--- a/sysdeps/i386/sub_n.S
+++ b/sysdeps/i386/sub_n.S
@@ -1,6 +1,6 @@
 /* i80386 __mpn_sub_n -- Add two limb vectors of the same length > 0 and store
    sum in a third limb vector.
-   Copyright (C) 1992, 1994, 1995, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1994, 1995, 1997, 1998, 2000 Free Software Foundation, Inc.
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
@@ -18,26 +18,27 @@
    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
 ENTRY(__mpn_sub_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 */
@@ -99,5 +100,7 @@ L(oop):	movl	(%esi),%eax
 
 	popl %esi
 	popl %edi
+
+	LEAVE
 	ret
 END(__mpn_sub_n)
diff --git a/sysdeps/i386/submul_1.S b/sysdeps/i386/submul_1.S
index fc50585f86..99a1c81f2d 100644
--- a/sysdeps/i386/submul_1.S
+++ b/sysdeps/i386/submul_1.S
@@ -1,6 +1,6 @@
 /* i80386 __mpn_submul_1 -- Multiply a limb vector with a limb and subtract
    the result from a second limb vector.
-   Copyright (C) 1992, 1994, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1994, 1997, 1998, 2000 Free Software Foundation, Inc.
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
@@ -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)
-   sizeP	(sp + 12)
-   s2_limb	(sp + 16)
-*/
-
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-asm.h"
+
+#define PARMS	LINKAGE+16	/* space for 4 saved regs */
+#define RES	PARMS
+#define S1	RES+PTR_SIZE
+#define SIZE	S1+PTR_SIZE
+#define S2LIMB	SIZE+4
 
 #define res_ptr edi
 #define s1_ptr esi
@@ -36,16 +35,17 @@
 
 	.text
 ENTRY(__mpn_submul_1)
+	ENTER
 
 	INSN1(push,l	,R(edi))
 	INSN1(push,l	,R(esi))
 	INSN1(push,l	,R(ebx))
 	INSN1(push,l	,R(ebp))
 
-	INSN2(mov,l	,R(res_ptr),MEM_DISP(esp,20))
-	INSN2(mov,l	,R(s1_ptr),MEM_DISP(esp,24))
-	INSN2(mov,l	,R(sizeP),MEM_DISP(esp,28))
-	INSN2(mov,l	,R(s2_limb),MEM_DISP(esp,32))
+	INSN2(mov,l	,R(res_ptr),MEM_DISP(esp,RES))
+	INSN2(mov,l	,R(s1_ptr),MEM_DISP(esp,S1))
+	INSN2(mov,l	,R(sizeP),MEM_DISP(esp,SIZE))
+	INSN2(mov,l	,R(s2_limb),MEM_DISP(esp,S2LIMB))
 
 	INSN2(lea,l	,R(res_ptr),MEM_INDEX(res_ptr,sizeP,4))
 	INSN2(lea,l	,R(s1_ptr),MEM_INDEX(s1_ptr,sizeP,4))
@@ -69,5 +69,7 @@ L(oop):
 	INSN1(pop,l	,R(ebx))
 	INSN1(pop,l	,R(esi))
 	INSN1(pop,l	,R(edi))
+
+	LEAVE
 	ret
 END(__mpn_submul_1)