diff options
Diffstat (limited to 'sysdeps/i386/memcopy.h')
| -rw-r--r-- | sysdeps/i386/memcopy.h | 42 |
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; \ |