[project @ 2000-08-18 15:44:28 by simonmar]

[ghc-hetmet.git] / ghc / rts / gmp / mpn / x86 / mul_1.asm

diff --git a/ghc/rts/gmp/mpn/x86/mul_1.asm b/ghc/rts/gmp/mpn/x86/mul_1.asm
new file mode 100644 (file)
index 0000000..8817f29
--- /dev/null
+++ b/ghc/rts/gmp/mpn/x86/mul_1.asm
@@ -0,0 +1,130 @@
+dnl  x86 mpn_mul_1 (for 386, 486, and Pentium Pro) -- Multiply a limb vector
+dnl  with a limb and store the result in a second limb vector.
+dnl 
+dnl      cycles/limb
+dnl  P6:     5.5
+dnl
+dnl  The following CPUs have their own optimized code, but for reference the
+dnl  code here runs as follows.
+dnl
+dnl      cycles/limb
+dnl  P5:    12.5
+dnl  K6:    10.5
+dnl  K7:     4.5
+
+
+dnl  Copyright (C) 1992, 1994, 1997, 1998, 1999, 2000 Free Software
+dnl  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
+dnl  modify it under the terms of the GNU Lesser General Public License as
+dnl  published by the Free Software Foundation; either version 2.1 of the
+dnl  License, or (at your option) any later version.
+dnl 
+dnl  The GNU MP Library is distributed in the hope that it will be useful,
+dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+dnl  Lesser General Public License for more details.
+dnl 
+dnl  You should have received a copy of the GNU Lesser General Public
+dnl  License along with the GNU MP Library; see the file COPYING.LIB.  If
+dnl  not, write to the Free Software Foundation, Inc., 59 Temple Place -
+dnl  Suite 330, Boston, MA 02111-1307, USA.
+
+
+include(`../config.m4')
+
+
+C mp_limb_t mpn_mul_1 (mp_ptr dst, mp_srcptr src, mp_size_t size,
+C                      mp_limb_t multiplier);
+
+defframe(PARAM_MULTIPLIER,16)
+defframe(PARAM_SIZE,      12)
+defframe(PARAM_SRC,       8)
+defframe(PARAM_DST,       4)
+
+       TEXT
+       ALIGN(8)
+PROLOGUE(mpn_mul_1)
+deflit(`FRAME',0)
+
+       pushl   %edi
+       pushl   %esi
+       pushl   %ebx
+       pushl   %ebp
+deflit(`FRAME',16)
+
+       movl    PARAM_DST,%edi
+       movl    PARAM_SRC,%esi
+       movl    PARAM_SIZE,%ecx
+
+       xorl    %ebx,%ebx
+       andl    $3,%ecx
+       jz      L(end0)
+
+L(oop0):
+       movl    (%esi),%eax
+       mull    PARAM_MULTIPLIER
+       leal    4(%esi),%esi
+       addl    %ebx,%eax
+       movl    $0,%ebx
+       adcl    %ebx,%edx
+       movl    %eax,(%edi)
+       movl    %edx,%ebx       C propagate carry into cylimb
+
+       leal    4(%edi),%edi
+       decl    %ecx
+       jnz     L(oop0)
+
+L(end0):
+       movl    PARAM_SIZE,%ecx
+       shrl    $2,%ecx
+       jz      L(end)
+
+
+       ALIGN(8)
+L(oop):        movl    (%esi),%eax
+       mull    PARAM_MULTIPLIER
+       addl    %eax,%ebx
+       movl    $0,%ebp
+       adcl    %edx,%ebp
+
+       movl    4(%esi),%eax
+       mull    PARAM_MULTIPLIER
+       movl    %ebx,(%edi)
+       addl    %eax,%ebp       C new lo + cylimb
+       movl    $0,%ebx
+       adcl    %edx,%ebx
+
+       movl    8(%esi),%eax
+       mull    PARAM_MULTIPLIER
+       movl    %ebp,4(%edi)
+       addl    %eax,%ebx       C new lo + cylimb
+       movl    $0,%ebp
+       adcl    %edx,%ebp
+
+       movl    12(%esi),%eax
+       mull    PARAM_MULTIPLIER
+       movl    %ebx,8(%edi)
+       addl    %eax,%ebp       C new lo + cylimb
+       movl    $0,%ebx
+       adcl    %edx,%ebx
+
+       movl    %ebp,12(%edi)
+
+       leal    16(%esi),%esi
+       leal    16(%edi),%edi
+       decl    %ecx
+       jnz     L(oop)
+
+L(end):        movl    %ebx,%eax
+
+       popl    %ebp
+       popl    %ebx
+       popl    %esi
+       popl    %edi
+       ret
+
+EPILOGUE()