Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpn / x86 / pentium4 / sse2 / mul_1.asm

diff --git a/gmp/mpn/x86/pentium4/sse2/mul_1.asm b/gmp/mpn/x86/pentium4/sse2/mul_1.asm
new file mode 100644 (file)
index 0000000..07be951
--- /dev/null
+++ b/gmp/mpn/x86/pentium4/sse2/mul_1.asm
@@ -0,0 +1,158 @@
+dnl  mpn_mul_1 for Pentium 4 and P6 models with SSE2 (i.e., 9,D,E,F).
+
+dnl  Copyright 2005, 2007 Free Software Foundation, Inc.
+dnl
+dnl  This file is part of the GNU MP Library.
+dnl
+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
+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
+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 TODO:
+C  * Tweak eax/edx offsets in loop as to save some lea's
+C  * Perhaps software pipeline small-case code
+
+C                           cycles/limb
+C P6 model 0-8,10-12)           -
+C P6 model 9   (Banias)                ?
+C P6 model 13  (Dothan)         4.17
+C P4 model 0-1 (Willamette):   4
+C P4 model 2   (Northwood):     4
+C P4 model 3-4 (Prescott):      4.55
+
+C INPUT PARAMETERS
+C rp           sp + 4
+C up           sp + 8
+C n            sp + 12
+C v0           sp + 16
+
+       TEXT
+       ALIGN(16)
+PROLOGUE(mpn_mul_1c)
+       mov     4(%esp), %edx
+       mov     8(%esp), %eax
+       mov     12(%esp), %ecx
+       movd    16(%esp), %mm7
+       movd    20(%esp), %mm6
+       jmp     L(ent)
+EPILOGUE()
+       ALIGN(16)
+PROLOGUE(mpn_mul_1)
+       mov     4(%esp), %edx
+       mov     8(%esp), %eax
+       mov     12(%esp), %ecx
+       movd    16(%esp), %mm7
+       pxor    %mm6, %mm6
+L(ent):        cmp     $4, %ecx
+       jnc     L(big)
+
+L(lp0):        movd    (%eax), %mm0
+       lea     4(%eax), %eax
+       lea     4(%edx), %edx
+       pmuludq %mm7, %mm0
+       paddq   %mm0, %mm6
+       movd    %mm6, -4(%edx)
+       psrlq   $32, %mm6
+       dec     %ecx
+       jnz     L(lp0)
+       movd    %mm6, %eax
+       emms
+       ret
+
+L(big):        and     $3, %ecx
+       je      L(0)
+       cmp     $2, %ecx
+       jc      L(1)
+       je      L(2)
+       jmp     L(3)                    C FIXME: one case should fall through
+
+L(0):  movd    (%eax), %mm3
+       sub     12(%esp), %ecx          C loop count
+       lea     -16(%eax), %eax
+       lea     -12(%edx), %edx
+       pmuludq %mm7, %mm3
+       movd    20(%eax), %mm0
+       pmuludq %mm7, %mm0
+       movd    24(%eax), %mm1
+       jmp     L(00)
+
+L(1):  movd    (%eax), %mm2
+       sub     12(%esp), %ecx
+       lea     -12(%eax), %eax
+       lea     -8(%edx), %edx
+       pmuludq %mm7, %mm2
+       movd    16(%eax), %mm3
+       pmuludq %mm7, %mm3
+       movd    20(%eax), %mm0
+       jmp     L(01)
+
+L(2):  movd    (%eax), %mm1
+       sub     12(%esp), %ecx
+       lea     -8(%eax), %eax
+       lea     -4(%edx), %edx
+       pmuludq %mm7, %mm1
+       movd    12(%eax), %mm2
+       pmuludq %mm7, %mm2
+       movd    16(%eax), %mm3
+       jmp     L(10)
+
+L(3):  movd    (%eax), %mm0
+       sub     12(%esp), %ecx
+       lea     -4(%eax), %eax
+       pmuludq %mm7, %mm0
+       movd    8(%eax), %mm1
+       pmuludq %mm7, %mm1
+       movd    12(%eax), %mm2
+
+       ALIGN(16)
+L(top):        pmuludq %mm7, %mm2
+       paddq   %mm0, %mm6
+       movd    16(%eax), %mm3
+       movd    %mm6, 0(%edx)
+       psrlq   $32, %mm6
+L(10): pmuludq %mm7, %mm3
+       paddq   %mm1, %mm6
+       movd    20(%eax), %mm0
+       movd    %mm6, 4(%edx)
+       psrlq   $32, %mm6
+L(01): pmuludq %mm7, %mm0
+       paddq   %mm2, %mm6
+       movd    24(%eax), %mm1
+       movd    %mm6, 8(%edx)
+       psrlq   $32, %mm6
+L(00): pmuludq %mm7, %mm1
+       paddq   %mm3, %mm6
+       movd    28(%eax), %mm2
+       movd    %mm6, 12(%edx)
+       psrlq   $32, %mm6
+       lea     16(%eax), %eax
+       lea     16(%edx), %edx
+       add     $4, %ecx
+       ja      L(top)
+
+L(end):        pmuludq %mm7, %mm2
+       paddq   %mm0, %mm6
+       movd    %mm6, 0(%edx)
+       psrlq   $32, %mm6
+       paddq   %mm1, %mm6
+       movd    %mm6, 4(%edx)
+       psrlq   $32, %mm6
+       paddq   %mm2, %mm6
+       movd    %mm6, 8(%edx)
+       psrlq   $32, %mm6
+       movd    %mm6, %eax
+       emms
+       ret
+EPILOGUE()