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-rw-r--r--sysdeps/powerpc/memset.S208
1 files changed, 104 insertions, 104 deletions
diff --git a/sysdeps/powerpc/memset.S b/sysdeps/powerpc/memset.S
index 6ac32dd..63c4c14 100644
--- a/sysdeps/powerpc/memset.S
+++ b/sysdeps/powerpc/memset.S
@@ -1,5 +1,5 @@
/* Optimized memset implementation for PowerPC.
- Copyright (C) 1997 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1999 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
@@ -30,170 +30,170 @@ EALIGN(memset,5,1)
r7: number of bytes we are setting now (when aligning) */
/* take care of case for size <= 4 */
- cmplwi %cr1,%r5,4
- andi. %r7,%r3,3
- mr %r6,%r3
- ble- %cr1,L(small)
+ cmplwi cr1,r5,4
+ andi. r7,r3,3
+ mr r6,r3
+ ble- cr1,L(small)
/* align to word boundary */
- cmplwi %cr5,%r5,31
- rlwimi %r4,%r4,8,16,23
+ cmplwi cr5,r5,31
+ rlwimi r4,r4,8,16,23
beq+ L(aligned) # 8th instruction from .align
- mtcrf 0x01,%r3
- subfic %r7,%r7,4
- add %r6,%r6,%r7
- sub %r5,%r5,%r7
+ mtcrf 0x01,r3
+ subfic r7,r7,4
+ add r6,r6,r7
+ sub r5,r5,r7
bf+ 31,0f
- stb %r4,0(%r3)
+ stb r4,0(r3)
bt 30,L(aligned)
-0: sth %r4,-2(%r6) # 16th instruction from .align
+0: sth r4,-2(r6) # 16th instruction from .align
/* take care of case for size < 31 */
L(aligned):
- mtcrf 0x01,%r5
- rlwimi %r4,%r4,16,0,15
- ble %cr5,L(medium)
+ mtcrf 0x01,r5
+ rlwimi r4,r4,16,0,15
+ ble cr5,L(medium)
/* align to cache line boundary... */
- andi. %r7,%r6,0x1C
- subfic %r7,%r7,0x20
+ andi. r7,r6,0x1C
+ subfic r7,r7,0x20
beq L(caligned)
- mtcrf 0x01,%r7
- add %r6,%r6,%r7
- sub %r5,%r5,%r7
- cmplwi %cr1,%r7,0x10
- mr %r8,%r6
+ mtcrf 0x01,r7
+ add r6,r6,r7
+ sub r5,r5,r7
+ cmplwi cr1,r7,0x10
+ mr r8,r6
bf 28,1f
- stw %r4,-4(%r8)
- stwu %r4,-8(%r8)
-1: blt %cr1,2f
- stw %r4,-4(%r8) # 32nd instruction from .align
- stw %r4,-8(%r8)
- stw %r4,-12(%r8)
- stwu %r4,-16(%r8)
+ stw r4,-4(r8)
+ stwu r4,-8(r8)
+1: blt cr1,2f
+ stw r4,-4(r8) # 32nd instruction from .align
+ stw r4,-8(r8)
+ stw r4,-12(r8)
+ stwu r4,-16(r8)
2: bf 29,L(caligned)
- stw %r4,-4(%r8)
+ stw r4,-4(r8)
/* now aligned to a cache line. */
L(caligned):
- cmplwi %cr1,%r4,0
- clrrwi. %r7,%r5,5
- mtcrf 0x01,%r5 # 40th instruction from .align
- beq %cr1,L(zloopstart) # special case for clearing memory using dcbz
- srwi %r0,%r7,5
- mtctr %r0
+ cmplwi cr1,r4,0
+ clrrwi. r7,r5,5
+ mtcrf 0x01,r5 # 40th instruction from .align
+ beq cr1,L(zloopstart) # special case for clearing memory using dcbz
+ srwi r0,r7,5
+ mtctr r0
beq L(medium) # we may not actually get to do a full line
- clrlwi. %r5,%r5,27
- add %r6,%r6,%r7
-0: li %r8,-0x40
+ clrlwi. r5,r5,27
+ add r6,r6,r7
+0: li r8,-0x40
bdz L(cloopdone) # 48th instruction from .align
-3: dcbz %r8,%r6
- stw %r4,-4(%r6)
- stw %r4,-8(%r6)
- stw %r4,-12(%r6)
- stw %r4,-16(%r6)
+3: dcbz r8,r6
+ stw r4,-4(r6)
+ stw r4,-8(r6)
+ stw r4,-12(r6)
+ stw r4,-16(r6)
nop # let 601 fetch last 4 instructions of loop
- stw %r4,-20(%r6)
- stw %r4,-24(%r6) # 56th instruction from .align
+ stw r4,-20(r6)
+ stw r4,-24(r6) # 56th instruction from .align
nop # let 601 fetch first 8 instructions of loop
- stw %r4,-28(%r6)
- stwu %r4,-32(%r6)
+ stw r4,-28(r6)
+ stwu r4,-32(r6)
bdnz 3b
L(cloopdone):
- stw %r4,-4(%r6)
- stw %r4,-8(%r6)
- stw %r4,-12(%r6)
- stw %r4,-16(%r6) # 64th instruction from .align
- stw %r4,-20(%r6)
- cmplwi %cr1,%r5,16
- stw %r4,-24(%r6)
- stw %r4,-28(%r6)
- stwu %r4,-32(%r6)
+ stw r4,-4(r6)
+ stw r4,-8(r6)
+ stw r4,-12(r6)
+ stw r4,-16(r6) # 64th instruction from .align
+ stw r4,-20(r6)
+ cmplwi cr1,r5,16
+ stw r4,-24(r6)
+ stw r4,-28(r6)
+ stwu r4,-32(r6)
beqlr
- add %r6,%r6,%r7
+ add r6,r6,r7
b L(medium_tail2) # 72nd instruction from .align
.align 5
nop
/* Clear lines of memory in 128-byte chunks. */
L(zloopstart):
- clrlwi %r5,%r5,27
- mtcrf 0x02,%r7
- srwi. %r0,%r7,7
- mtctr %r0
- li %r7,0x20
- li %r8,-0x40
- cmplwi %cr1,%r5,16 # 8
+ clrlwi r5,r5,27
+ mtcrf 0x02,r7
+ srwi. r0,r7,7
+ mtctr r0
+ li r7,0x20
+ li r8,-0x40
+ cmplwi cr1,r5,16 # 8
bf 26,0f
- dcbz 0,%r6
- addi %r6,%r6,0x20
-0: li %r9,-0x20
+ dcbz 0,r6
+ addi r6,r6,0x20
+0: li r9,-0x20
bf 25,1f
- dcbz 0,%r6
- dcbz %r7,%r6
- addi %r6,%r6,0x40 # 16
-1: cmplwi %cr5,%r5,0
+ dcbz 0,r6
+ dcbz r7,r6
+ addi r6,r6,0x40 # 16
+1: cmplwi cr5,r5,0
beq L(medium)
L(zloop):
- dcbz 0,%r6
- dcbz %r7,%r6
- addi %r6,%r6,0x80
- dcbz %r8,%r6
- dcbz %r9,%r6
+ dcbz 0,r6
+ dcbz r7,r6
+ addi r6,r6,0x80
+ dcbz r8,r6
+ dcbz r9,r6
bdnz L(zloop)
- beqlr %cr5
+ beqlr cr5
b L(medium_tail2)
.align 5
L(small):
/* Memset of 4 bytes or less. */
- cmplwi %cr5,%r5,1
- cmplwi %cr1,%r5,3
- bltlr %cr5
- stb %r4,0(%r6)
- beqlr %cr5
+ cmplwi cr5,r5,1
+ cmplwi cr1,r5,3
+ bltlr cr5
+ stb r4,0(r6)
+ beqlr cr5
nop
- stb %r4,1(%r6)
- bltlr %cr1
- stb %r4,2(%r6)
- beqlr %cr1
+ stb r4,1(r6)
+ bltlr cr1
+ stb r4,2(r6)
+ beqlr cr1
nop
- stb %r4,3(%r6)
+ stb r4,3(r6)
blr
/* Memset of 0-31 bytes. */
.align 5
L(medium):
- cmplwi %cr1,%r5,16
+ cmplwi cr1,r5,16
L(medium_tail2):
- add %r6,%r6,%r5
+ add r6,r6,r5
L(medium_tail):
bt- 31,L(medium_31t)
bt- 30,L(medium_30t)
L(medium_30f):
bt- 29,L(medium_29t)
L(medium_29f):
- bge- %cr1,L(medium_27t)
+ bge- cr1,L(medium_27t)
bflr- 28
- stw %r4,-4(%r6) # 8th instruction from .align
- stw %r4,-8(%r6)
+ stw r4,-4(r6) # 8th instruction from .align
+ stw r4,-8(r6)
blr
L(medium_31t):
- stbu %r4,-1(%r6)
+ stbu r4,-1(r6)
bf- 30,L(medium_30f)
L(medium_30t):
- sthu %r4,-2(%r6)
+ sthu r4,-2(r6)
bf- 29,L(medium_29f)
L(medium_29t):
- stwu %r4,-4(%r6)
- blt- %cr1,L(medium_27f) # 16th instruction from .align
+ stwu r4,-4(r6)
+ blt- cr1,L(medium_27f) # 16th instruction from .align
L(medium_27t):
- stw %r4,-4(%r6)
- stw %r4,-8(%r6)
- stw %r4,-12(%r6)
- stwu %r4,-16(%r6)
+ stw r4,-4(r6)
+ stw r4,-8(r6)
+ stw r4,-12(r6)
+ stwu r4,-16(r6)
L(medium_27f):
bflr- 28
L(medium_28t):
- stw %r4,-4(%r6)
- stw %r4,-8(%r6)
+ stw r4,-4(r6)
+ stw r4,-8(r6)
blr
END(memset)
generated by cgit v1.1 at 2024-11-04 13:46:24 +0000