aboutsummaryrefslogtreecommitdiff
path: root/sysdeps
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/i386/bits/select.h19
-rw-r--r--sysdeps/i386/bzero.c20
-rw-r--r--sysdeps/i386/memcopy.h42
-rw-r--r--sysdeps/i386/memset.c21
4 files changed, 57 insertions, 45 deletions
diff --git a/sysdeps/i386/bits/select.h b/sysdeps/i386/bits/select.h
index f2ab43e..f21407f 100644
--- a/sysdeps/i386/bits/select.h
+++ b/sysdeps/i386/bits/select.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1998 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
@@ -24,12 +24,17 @@
#if defined __GNUC__ && __GNUC__ >= 2
# define __FD_ZERO(fdsetp) \
- __asm__ __volatile__ ("cld; rep; stosl" \
- : "=m" ((fdsetp)->fds_bits[__FDELT (__FD_SETSIZE)]) \
- : "a" (0), "c" (sizeof (__fd_set) \
- / sizeof (__fd_mask)), \
- "D" (&(fdsetp)->fds_bits[0]) \
- :"cx","di","memory")
+ do { \
+ int __d0, __d1; \
+ __asm__ __volatile__ ("cld; rep; stosl" \
+ : "=m" ((fdsetp)->fds_bits[__FDELT (__FD_SETSIZE)]),\
+ "=&c" (__d0), "=&D" (__d1) \
+ : "a" (0), "1" (sizeof (__fd_set) \
+ / sizeof (__fd_mask)), \
+ "2" (&(fdsetp)->fds_bits[0]) \
+ : "memory"); \
+ } while (0)
+
# define __FD_SET(fd, fdsetp) \
__asm__ __volatile__ ("btsl %1,%0" \
: "=m" ((fdsetp)->fds_bits[__FDELT (fd)]) \
diff --git a/sysdeps/i386/bzero.c b/sysdeps/i386/bzero.c
index 99f2352..80574cc 100644
--- a/sysdeps/i386/bzero.c
+++ b/sysdeps/i386/bzero.c
@@ -1,6 +1,6 @@
/* bzero -- set a block of memory to zero. For Intel 80x86, x>=3.
This file is part of the GNU C Library.
- Copyright (C) 1991, 1992, 1993, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1992, 1993, 1997, 1998 Free Software Foundation, Inc.
Contributed by Torbjorn Granlund (tege@sics.se).
The GNU C Library is free software; you can redistribute it and/or
@@ -31,7 +31,7 @@ __bzero (dstpp, len)
size_t len;
{
/* N.B.: This code is almost verbatim from memset.c. */
-
+ int d0;
unsigned long int dstp = (unsigned long int) dstpp;
/* This explicit register allocation
@@ -55,25 +55,25 @@ __bzero (dstpp, len)
/* Fill bytes until DSTP is aligned on a longword boundary. */
asm volatile ("rep\n"
"stosb" /* %0, %2, %3 */ :
- "=D" (dstp) :
- "0" (dstp), "c" ((-dstp) % OPSIZ), "a" (x) :
- "cx");
+ "=D" (dstp), "=c" (d0) :
+ "0" (dstp), "1" ((-dstp) % OPSIZ), "a" (x) :
+ "memory");
/* Fill longwords. */
asm volatile ("rep\n"
"stosl" /* %0, %2, %3 */ :
- "=D" (dstp) :
- "0" (dstp), "c" (len / OPSIZ), "a" (x) :
- "cx");
+ "=D" (dstp), "=c" (d0) :
+ "0" (dstp), "1" (len / OPSIZ), "a" (x) :
+ "memory");
len %= OPSIZ;
}
/* Write the last few bytes. */
asm volatile ("rep\n"
"stosb" /* %0, %2, %3 */ :
- "=D" (dstp) :
+ "=D" (dstp), "=c" (d0) :
"0" (dstp), "c" (len), "a" (x) :
- "cx");
+ "memory");
}
weak_alias (__bzero, bzero)
diff --git a/sysdeps/i386/memcopy.h b/sysdeps/i386/memcopy.h
index 576f996..68ce91e 100644
--- a/sysdeps/i386/memcopy.h
+++ b/sysdeps/i386/memcopy.h
@@ -1,5 +1,5 @@
/* memcopy.h -- definitions for memory copy functions. i386 version.
- Copyright (C) 1991, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Torbjorn Granlund (tege@sics.se).
@@ -25,19 +25,23 @@
#undef BYTE_COPY_FWD
#define BYTE_COPY_FWD(dst_bp, src_bp, nbytes) \
- asm volatile(/* Clear the direction flag, so copying goes forward. */ \
- "cld\n" \
- /* Copy bytes. */ \
- "rep\n" \
- "movsb" : \
- "=D" (dst_bp), "=S" (src_bp) : \
- "0" (dst_bp), "1" (src_bp), "c" (nbytes) : \
- "cx")
+ do { \
+ int __d0; \
+ asm volatile(/* Clear the direction flag, so copying goes forward. */ \
+ "cld\n" \
+ /* Copy bytes. */ \
+ "rep\n" \
+ "movsb" : \
+ "=D" (dst_bp), "=S" (src_bp), "=c" (__d0) : \
+ "0" (dst_bp), "1" (src_bp), "2" (nbytes) : \
+ "memory"); \
+ } while (0)
#undef BYTE_COPY_BWD
#define BYTE_COPY_BWD(dst_ep, src_ep, nbytes) \
do \
{ \
+ int __d0; \
asm volatile(/* Set the direction flag, so copying goes backwards. */ \
"std\n" \
/* Copy bytes. */ \
@@ -45,9 +49,9 @@
"movsb\n" \
/* Clear the dir flag. Convention says it should be 0. */ \
"cld" : \
- "=D" (dst_ep), "=S" (src_ep) : \
- "0" (dst_ep - 1), "1" (src_ep - 1), "c" (nbytes) : \
- "cx"); \
+ "=D" (dst_ep), "=S" (src_ep), "=c" (__d0) : \
+ "0" (dst_ep - 1), "1" (src_ep - 1), "2" (nbytes) : \
+ "memory"); \
dst_ep += 1; \
src_ep += 1; \
} while (0)
@@ -56,14 +60,15 @@
#define WORD_COPY_FWD(dst_bp, src_bp, nbytes_left, nbytes) \
do \
{ \
+ int __d0; \
asm volatile(/* Clear the direction flag, so copying goes forward. */ \
"cld\n" \
/* Copy longwords. */ \
"rep\n" \
"movsl" : \
- "=D" (dst_bp), "=S" (src_bp) : \
- "0" (dst_bp), "1" (src_bp), "c" ((nbytes) / 4) : \
- "cx"); \
+ "=D" (dst_bp), "=S" (src_bp), "=c" (__d0) : \
+ "0" (dst_bp), "1" (src_bp), "2" ((nbytes) / 4) : \
+ "memory"); \
(nbytes_left) = (nbytes) % 4; \
} while (0)
@@ -71,6 +76,7 @@
#define WORD_COPY_BWD(dst_ep, src_ep, nbytes_left, nbytes) \
do \
{ \
+ int __d0; \
asm volatile(/* Set the direction flag, so copying goes backwards. */ \
"std\n" \
/* Copy longwords. */ \
@@ -78,9 +84,9 @@
"movsl\n" \
/* Clear the dir flag. Convention says it should be 0. */ \
"cld" : \
- "=D" (dst_ep), "=S" (src_ep) : \
- "0" (dst_ep - 4), "1" (src_ep - 4), "c" ((nbytes) / 4) : \
- "cx"); \
+ "=D" (dst_ep), "=S" (src_ep), "=c" (__d0) : \
+ "0" (dst_ep - 4), "1" (src_ep - 4), "2" ((nbytes) / 4) : \
+ "memory"); \
dst_ep += 4; \
src_ep += 4; \
(nbytes_left) = (nbytes) % 4; \
diff --git a/sysdeps/i386/memset.c b/sysdeps/i386/memset.c
index 0cb6578..e7a8bc6 100644
--- a/sysdeps/i386/memset.c
+++ b/sysdeps/i386/memset.c
@@ -1,6 +1,6 @@
/* Set a block of memory to some byte value.
For Intel 80x86, x>=3.
- Copyright (C) 1991, 1992, 1993, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1992, 1993, 1997, 1998 Free Software Foundation, Inc.
Contributed by Torbjorn Granlund (tege@sics.se).
The GNU C Library is free software; you can redistribute it and/or
@@ -28,6 +28,7 @@
void *
memset (void *dstpp, int c, size_t len)
{
+ int d0;
unsigned long int dstp = (unsigned long int) dstpp;
/* This explicit register allocation
@@ -55,25 +56,25 @@ memset (void *dstpp, int c, size_t len)
/* Fill bytes until DSTP is aligned on a longword boundary. */
asm volatile("rep\n"
"stosb" /* %0, %2, %3 */ :
- "=D" (dstp) :
- "0" (dstp), "c" ((-dstp) % OPSIZ), "a" (x) :
- "cx");
+ "=D" (dstp), "=c" (d0) :
+ "0" (dstp), "1" ((-dstp) % OPSIZ), "a" (x) :
+ "memory");
/* Fill longwords. */
asm volatile("rep\n"
"stosl" /* %0, %2, %3 */ :
- "=D" (dstp) :
- "0" (dstp), "c" (len / OPSIZ), "a" (x) :
- "cx");
+ "=D" (dstp), "=c" (d0) :
+ "0" (dstp), "1" (len / OPSIZ), "a" (x) :
+ "memory");
len %= OPSIZ;
}
/* Write the last few bytes. */
asm volatile("rep\n"
"stosb" /* %0, %2, %3 */ :
- "=D" (dstp) :
- "0" (dstp), "c" (len), "a" (x) :
- "cx");
+ "=D" (dstp), "=c" (d0) :
+ "0" (dstp), "1" (len), "a" (x) :
+ "memory");
return dstpp;
}
generated by cgit v1.1 at 2024-11-17 16:52:15 +0000