diff options
Diffstat (limited to 'rts/gmp/mpn/x86/mul_1.asm')
| -rw-r--r-- | rts/gmp/mpn/x86/mul_1.asm | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/rts/gmp/mpn/x86/mul_1.asm b/rts/gmp/mpn/x86/mul_1.asm new file mode 100644 index 0000000000..8817f291bc --- /dev/null +++ b/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() |