Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpn / powerpc64 / copyd.asm

diff --git a/gmp/mpn/powerpc64/copyd.asm b/gmp/mpn/powerpc64/copyd.asm
new file mode 100644 (file)
index 0000000..6a46a43
--- /dev/null
+++ b/gmp/mpn/powerpc64/copyd.asm
@@ -0,0 +1,70 @@
+dnl  PowerPC-64 mpn_copyd
+
+dnl  Copyright 2004, 2005 Free Software Foundation, Inc.
+
+dnl  This file is part of the GNU MP Library.
+
+dnl  The GNU MP Library is free software; you can redistribute it and/or modify
+dnl  it under the terms of the GNU Lesser General Public License as published
+dnl  by the Free Software Foundation; either version 3 of the License, or (at
+dnl  your option) any later version.
+
+dnl  The GNU MP Library is distributed in the hope that it will be useful, but
+dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+dnl  License for more details.
+
+dnl  You should have received a copy of the GNU Lesser General Public License
+dnl  along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.
+
+include(`../config.m4')
+
+C              cycles/limb
+C POWER3/PPC630:     1
+C POWER4/PPC970:     1
+
+C INPUT PARAMETERS
+C rp   r3
+C up   r4
+C n    r5
+
+ASM_START()
+PROLOGUE(mpn_copyd)
+       rldic.  r0, r5, 3, 59   C r0 = (r5 & 3) << 3; cr0 = (n == 4t)?
+       cmpldi  cr6, r0, 16     C cr6 = (n cmp 4t + 2)?
+
+ifdef(`HAVE_ABI_mode32',
+`      rldic   r6, r5, 3, 32', C byte count corresponding to n
+`      rldicr  r6, r5, 3, 60') C byte count corresponding to n
+
+       addi    r5, r5, 4       C compute...
+ifdef(`HAVE_ABI_mode32',
+`      rldicl  r5, r5, 62,34', C ...branch count
+`      rldicl  r5, r5, 62, 2') C ...branch count
+       mtctr   r5
+
+       add     r4, r4, r6
+       add     r3, r3, r6
+       sub     r4, r4, r0      C offset up
+       sub     r3, r3, r0      C offset rp
+
+       beq     cr0, L(L00)
+       blt     cr6, L(L01)
+       beq     cr6, L(L10)
+       b       L(L11)
+
+       ALIGN(16)
+L(oop):        ld      r6, 24(r4)
+       std     r6, 24(r3)
+L(L11):        ld      r6, 16(r4)
+       std     r6, 16(r3)
+L(L10):        ld      r6, 8(r4)
+       std     r6, 8(r3)
+L(L01):        ld      r6, 0(r4)
+       std     r6, 0(r3)
+L(L00):        addi    r4, r4, -32
+       addi    r3, r3, -32
+       bdnz    L(oop)
+
+       blr
+EPILOGUE()