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authorUlrich Drepper <drepper@redhat.com>1998-08-25 11:45:26 +0000
committerUlrich Drepper <drepper@redhat.com>1998-08-25 11:45:26 +0000
commit6dbb7062ff2af970c6b8befecf71d7284d5813fb (patch)
tree491c0061190c228120bb48e2b3975572b4ba33e2 /sysdeps/i386/memcopy.h
parented1ac6a2d6c744bdbd4751efc86326ceafeac26c (diff)
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Update.
1998-08-25 11:43 Ulrich Drepper <drepper@cygnus.com> * elf/elf.h: Add syminfo stuff and other DT_* from Solaris' ELF. 1998-08-25 Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE> * argp/argp.h: Use __inline__ not inline. * sysdeps/i386/bits/select.h (FD_ZERO): Rewrite asm not to indicate an input register as being clobbered. * sysdeps/i386/memset.c (memset): Likewise. * sysdeps/i386/bzero.c (__bzero): Likewise. * sysdeps/i386/memcopy.h ({BYTE,WORD}_COPY_[FB]WD): Likewise. 1998-08-25 Andreas Jaeger <aj@arthur.rhein-neckar.de> * stdlib/jrand48_r.c (__jrand48_r): Set also upper half of result. Fixes PR libc/757 (Reported by Michael Creutz <creutz@bnl.gov).
Diffstat (limited to 'sysdeps/i386/memcopy.h')
-rw-r--r--sysdeps/i386/memcopy.h42
1 files changed, 24 insertions, 18 deletions
diff --git a/sysdeps/i386/memcopy.h b/sysdeps/i386/memcopy.h
index 576f996957..68ce91e095 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; \