diff options
Diffstat (limited to 'sysdeps/powerpc/strcpy.S')
| -rw-r--r-- | sysdeps/powerpc/strcpy.S | 76 |
1 files changed, 38 insertions, 38 deletions
diff --git a/sysdeps/powerpc/strcpy.S b/sysdeps/powerpc/strcpy.S index 3c0cce7844..0a1d89c8fc 100644 --- a/sysdeps/powerpc/strcpy.S +++ b/sysdeps/powerpc/strcpy.S @@ -1,5 +1,5 @@ /* Optimized strcpy 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 @@ -35,66 +35,66 @@ EALIGN(strcpy,4,0) r9: ~(word in src | 0x7f7f7f7f) r10: alternate word from src. */ - or %r0,%r4,%r3 - clrlwi. %r0,%r0,30 - addi %r5,%r3,-4 + or r0,r4,r3 + clrlwi. r0,r0,30 + addi r5,r3,-4 bne L(unaligned) - lis %r7,0xfeff - lis %r8,0x7f7f - lwz %r6,0(%r4) - addi %r7,%r7,-0x101 - addi %r8,%r8,0x7f7f + lis r7,0xfeff + lis r8,0x7f7f + lwz r6,0(r4) + addi r7,r7,-0x101 + addi r8,r8,0x7f7f b 2f -0: lwzu %r10,4(%r4) - stwu %r6,4(%r5) - add %r0,%r7,%r10 - nor %r9,%r8,%r10 - and. %r0,%r0,%r9 +0: lwzu r10,4(r4) + stwu r6,4(r5) + add r0,r7,r10 + nor r9,r8,r10 + and. r0,r0,r9 bne- 1f - lwzu %r6,4(%r4) - stwu %r10,4(%r5) -2: add %r0,%r7,%r6 - nor %r9,%r8,%r6 - and. %r0,%r0,%r9 + lwzu r6,4(r4) + stwu r10,4(r5) +2: add r0,r7,r6 + nor r9,r8,r6 + and. r0,r0,r9 beq+ 0b - mr %r10,%r6 + mr r10,r6 /* We've hit the end of the string. Do the rest byte-by-byte. */ -1: rlwinm. %r0,%r10,8,24,31 - stb %r0,4(%r5) +1: rlwinm. r0,r10,8,24,31 + stb r0,4(r5) beqlr- - rlwinm. %r0,%r10,16,24,31 - stb %r0,5(%r5) + rlwinm. r0,r10,16,24,31 + stb r0,5(r5) beqlr- - rlwinm. %r0,%r10,24,24,31 - stb %r0,6(%r5) + rlwinm. r0,r10,24,24,31 + stb r0,6(r5) beqlr- - stb %r10,7(%r5) + stb r10,7(r5) blr /* Oh well. In this case, we just do a byte-by-byte copy. */ .align 4 nop L(unaligned): - lbz %r6,0(%r4) - addi %r5,%r3,-1 - cmpwi %r6,0 + lbz r6,0(r4) + addi r5,r3,-1 + cmpwi r6,0 beq- 2f -0: lbzu %r10,1(%r4) - stbu %r6,1(%r5) - cmpwi %r10,0 +0: lbzu r10,1(r4) + stbu r6,1(r5) + cmpwi r10,0 beq- 1f nop /* Let 601 load start of loop. */ - lbzu %r6,1(%r4) - stbu %r10,1(%r5) - cmpwi %r6,0 + lbzu r6,1(r4) + stbu r10,1(r5) + cmpwi r6,0 bne+ 0b -2: stb %r6,1(%r5) +2: stb r6,1(r5) blr -1: stb %r10,1(%r5) +1: stb r10,1(r5) blr END(strcpy) |