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authorUlrich Drepper <drepper@redhat.com>2000-12-27 23:38:53 +0000
committerUlrich Drepper <drepper@redhat.com>2000-12-27 23:38:53 +0000
commitbb548f63d59de945c244c11e9e5668c3916b477a (patch)
tree7c598fe2079e0f5c4d60d2208a0c841364782c4f /sysdeps/alpha
parent5fba3e5e3c6fd862a7159059898812ecfcf4249d (diff)
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Update.
2000-12-27 Ulrich Drepper <drepper@redhat.com> * sysdeps/alpha/alphaev6/memcpy.S: Don't go through unrolled loop if we would go through it only once. Patch by Rick Gorton <rick.gorton@api-networks.com>. * sysdeps/alpha/alphaev67/strncat.S: Fix handling of numeric parameter. Patch by Richard Henderson <rth@redhat.com>. 2000-12-27 Jakub Jelinek <jakub@redhat.com> * malloc/malloc.c (memmove): Add prototypes. (MALLOC_MEMMOVE): Define. (chunk_realloc): Use it instead of MALLOC_COPY if source and destination might overlap.
Diffstat (limited to 'sysdeps/alpha')
-rw-r--r--sysdeps/alpha/alphaev6/memcpy.S6
-rw-r--r--sysdeps/alpha/alphaev67/strncat.S56
2 files changed, 25 insertions, 37 deletions
diff --git a/sysdeps/alpha/alphaev6/memcpy.S b/sysdeps/alpha/alphaev6/memcpy.S
index 35f17e7..e3af259 100644
--- a/sysdeps/alpha/alphaev6/memcpy.S
+++ b/sysdeps/alpha/alphaev6/memcpy.S
@@ -16,7 +16,7 @@
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. */
-
+
/*
* Much of the information about 21264 scheduling/coding comes from:
* Compiler Writer's Guide for the Alpha 21264
@@ -86,9 +86,9 @@ $single_head_quad:
$do_unroll:
addq $16, 64, $7 # E : Initial (+1 trip) wh64 address
- cmple $18, 63, $1 # E : Can we go through the unrolled loop?
+ cmple $18, 127, $1 # E : Can we go through the unrolled loop?
bne $1, $tail_quads # U : Nope
- nop # E :
+ nop # E :
$unroll_body:
wh64 ($7) # L1 : memory subsystem hint: 64 bytes at
diff --git a/sysdeps/alpha/alphaev67/strncat.S b/sysdeps/alpha/alphaev67/strncat.S
index 4d199d9..31ca19d 100644
--- a/sysdeps/alpha/alphaev67/strncat.S
+++ b/sysdeps/alpha/alphaev67/strncat.S
@@ -38,57 +38,45 @@ ENTRY(strncat)
#endif
.prologue 1
- mov $16, $0 # set up return value
- beq $18, $zerocount # U :
+ mov a0, v0 # set up return value
+ beq a2, $zerocount # U :
/* Find the end of the string. */
- ldq_u $1, 0($16) # L : load first quadword ($16 may be misaligned)
- lda $2, -1($31) # E :
+ ldq_u t0, 0(a0) # L : load first quadword (a0 may be misaligned)
+ lda t1, -1 # E :
- insqh $2, $0, $2 # U :
- andnot $16, 7, $16 # E :
+ insqh t1, v0, t1 # U :
+ andnot a0, 7, a0 # E :
nop # E :
- or $2, $1, $1 # E :
+ or t1, t0, t0 # E :
nop # E :
nop # E :
- cmpbge $31, $1, $2 # E : bits set iff byte == 0
- bne $2, $found # U :
+ cmpbge zero, t0, t1 # E : bits set iff byte == 0
+ bne t1, $found # U :
-$loop: ldq $1, 8($16) # L :
- addq $16, 8, $16 # E :
- cmpbge $31, $1, $2 # E :
- beq $2, $loop # U :
+$loop: ldq t0, 8(a0) # L :
+ addq a0, 8, a0 # E :
+ cmpbge zero, t0, t1 # E :
+ beq t1, $loop # U :
-$found: cttz $2, $3 # U0 :
- addq $16, $3, $16 # E :
- jsr $23, __stxncpy # L0 :/* Now do the append. */
+$found: cttz t1, t2 # U0 :
+ addq a0, t2, a0 # E :
+ jsr t9, __stxncpy # L0 : Now do the append.
/* Worry about the null termination. */
- zapnot $1, $27, $2 # U : was last byte a null?
- cmplt $27, $24, $5 # E : did we fill the buffer completely?
- bne $2, 0f # U :
- ret # L0 :
-
-0: or $5, $18, $2 # E :
- nop
- bne $2, 2f # U :
- and $24, 0x80, $3 # E : no zero next byte
-
+ cttz t10, t2 # U0: byte offset of end-of-count.
nop # E :
- bne $3, 1f # U :
- /* Here there are bytes left in the current word. Clear one. */
- addq $24, $24, $24 # E : end-of-count bit <<= 1
+ zapnot t0, t8, t1 # U : was last byte a null?
nop # E :
-2: zap $1, $24, $1 # U :
+ bne t1, 0f # U :
+ nop # E :
nop # E :
- stq_u $1, 0($16) # L :
ret # L0 :
-1: /* Here we must clear the first byte of the next DST word */
- stb $31, 8($16) # L :
- nop # E :
+0: addq t2, a0, a0 # E : address of end-of-count
+ stb zero, 1(a0) # L :
nop # E :
ret # L0 :