Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpn / powerpc32 / mul_1.asm

diff --git a/gmp/mpn/powerpc32/mul_1.asm b/gmp/mpn/powerpc32/mul_1.asm
new file mode 100644 (file)
index 0000000..e6f44e2
--- /dev/null
+++ b/gmp/mpn/powerpc32/mul_1.asm
@@ -0,0 +1,90 @@
+dnl  PowerPC-32 mpn_mul_1 -- Multiply a limb vector with a limb and store the
+dnl  result in a second limb vector.
+
+dnl  Copyright 1995, 1997, 2000, 2002, 2003, 2005 Free Software Foundation,
+dnl  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 603e:            ?
+C 604e:            4.0
+C 75x (G3):        4.5-11
+C 7400,7410 (G4):  4.5-11
+C 744x,745x (G4+): 6.0
+C power4/ppc970:   6.0
+C power5:          5.63
+
+C INPUT PARAMETERS
+C rp   r3
+C up   r4
+C n    r5
+C vl   r6
+
+ASM_START()
+PROLOGUE(mpn_mul_1)
+       mtctr   r5
+       addi    r3,r3,-4        C adjust res_ptr, it's offset before it's used
+       li      r12,0           C clear upper product reg
+       addic   r0,r0,0         C clear cy
+C Start software pipeline
+       lwz     r8,0(r4)
+       bdz     L(end3)
+       lwzu    r9,4(r4)
+       mullw   r11,r8,r6
+       mulhwu  r0,r8,r6
+       bdz     L(end1)
+C Software pipelined main loop
+L(loop):
+       lwz     r8,4(r4)
+       mullw   r10,r9,r6
+       adde    r5,r11,r12
+       mulhwu  r12,r9,r6
+       stw     r5,4(r3)
+       bdz     L(end2)
+       lwzu    r9,8(r4)
+       mullw   r11,r8,r6
+       adde    r7,r10,r0
+       mulhwu  r0,r8,r6
+       stwu    r7,8(r3)
+       bdnz    L(loop)
+C Finish software pipeline
+L(end1):
+       mullw   r10,r9,r6
+       adde    r5,r11,r12
+       mulhwu  r12,r9,r6
+       stw     r5,4(r3)
+       adde    r7,r10,r0
+       stwu    r7,8(r3)
+       addze   r3,r12
+       blr
+L(end2):
+       mullw   r11,r8,r6
+       adde    r7,r10,r0
+       mulhwu  r0,r8,r6
+       stwu    r7,8(r3)
+       adde    r5,r11,r12
+       stw     r5,4(r3)
+       addze   r3,r0
+       blr
+L(end3):
+       mullw   r11,r8,r6
+       stw     r11,4(r3)
+       mulhwu  r3,r8,r6
+       blr
+EPILOGUE(mpn_mul_1)