diff options
Diffstat (limited to 'sysdeps/mips/memcpy.S')
| -rw-r--r-- | sysdeps/mips/memcpy.S | 44 |
1 files changed, 22 insertions, 22 deletions
diff --git a/sysdeps/mips/memcpy.S b/sysdeps/mips/memcpy.S index 394265eed7..3d49ac976b 100644 --- a/sysdeps/mips/memcpy.S +++ b/sysdeps/mips/memcpy.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Hartvig Ekner <hartvige@mips.com>, 2002. @@ -44,27 +44,27 @@ ENTRY (memcpy) .set noreorder slti t0, a2, 8 # Less than 8? - bne t0, zero, $last8 + bne t0, zero, L(last8) move v0, a0 # Setup exit value before too late xor t0, a1, a0 # Find a0/a1 displacement andi t0, 0x3 - bne t0, zero, $shift # Go handle the unaligned case + bne t0, zero, L(shift) # Go handle the unaligned case subu t1, zero, a1 andi t1, 0x3 # a0/a1 are aligned, but are we - beq t1, zero, $chk8w # starting in the middle of a word? + beq t1, zero, L(chk8w) # starting in the middle of a word? subu a2, t1 LWHI t0, 0(a1) # Yes we are... take care of that addu a1, t1 SWHI t0, 0(a0) addu a0, t1 -$chk8w: andi t0, a2, 0x1f # 32 or more bytes left? - beq t0, a2, $chk1w +L(chk8w): andi t0, a2, 0x1f # 32 or more bytes left? + beq t0, a2, L(chk1w) subu a3, a2, t0 # Yes addu a3, a1 # a3 = end address of loop move a2, t0 # a2 = what will be left after loop -$lop8w: lw t0, 0(a1) # Loop taking 8 words at a time +L(lop8w): lw t0, 0(a1) # Loop taking 8 words at a time lw t1, 4(a1) lw t2, 8(a1) lw t3, 12(a1) @@ -81,49 +81,49 @@ $lop8w: lw t0, 0(a1) # Loop taking 8 words at a time sw t4, -16(a0) sw t5, -12(a0) sw t6, -8(a0) - bne a1, a3, $lop8w + bne a1, a3, L(lop8w) sw t7, -4(a0) -$chk1w: andi t0, a2, 0x3 # 4 or more bytes left? - beq t0, a2, $last8 +L(chk1w): andi t0, a2, 0x3 # 4 or more bytes left? + beq t0, a2, L(last8) subu a3, a2, t0 # Yes, handle them one word at a time addu a3, a1 # a3 again end address move a2, t0 -$lop1w: lw t0, 0(a1) +L(lop1w): lw t0, 0(a1) addiu a0, 4 addiu a1, 4 - bne a1, a3, $lop1w + bne a1, a3, L(lop1w) sw t0, -4(a0) -$last8: blez a2, $lst8e # Handle last 8 bytes, one at a time +L(last8): blez a2, L(lst8e) # Handle last 8 bytes, one at a time addu a3, a2, a1 -$lst8l: lb t0, 0(a1) +L(lst8l): lb t0, 0(a1) addiu a0, 1 addiu a1, 1 - bne a1, a3, $lst8l + bne a1, a3, L(lst8l) sb t0, -1(a0) -$lst8e: jr ra # Bye, bye +L(lst8e): jr ra # Bye, bye nop -$shift: subu a3, zero, a0 # Src and Dest unaligned +L(shift): subu a3, zero, a0 # Src and Dest unaligned andi a3, 0x3 # (unoptimized case...) - beq a3, zero, $shft1 + beq a3, zero, L(shft1) subu a2, a3 # a2 = bytes left LWHI t0, 0(a1) # Take care of first odd part LWLO t0, 3(a1) addu a1, a3 SWHI t0, 0(a0) addu a0, a3 -$shft1: andi t0, a2, 0x3 +L(shft1): andi t0, a2, 0x3 subu a3, a2, t0 addu a3, a1 -$shfth: LWHI t1, 0(a1) # Limp through, word by word +L(shfth): LWHI t1, 0(a1) # Limp through, word by word LWLO t1, 3(a1) addiu a0, 4 addiu a1, 4 - bne a1, a3, $shfth + bne a1, a3, L(shfth) sw t1, -4(a0) - b $last8 # Handle anything which may be left + b L(last8) # Handle anything which may be left move a2, t0 .set reorder |