+++ /dev/null
-dnl x86 mpn_add_n/mpn_sub_n -- mpn addition and subtraction.
-
-dnl Copyright (C) 1992, 1994, 1995, 1996, 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')
-
-
-ifdef(`OPERATION_add_n',`
- define(M4_inst, adcl)
- define(M4_function_n, mpn_add_n)
- define(M4_function_nc, mpn_add_nc)
-
-',`ifdef(`OPERATION_sub_n',`
- define(M4_inst, sbbl)
- define(M4_function_n, mpn_sub_n)
- define(M4_function_nc, mpn_sub_nc)
-
-',`m4_error(`Need OPERATION_add_n or OPERATION_sub_n
-')')')
-
-MULFUNC_PROLOGUE(mpn_add_n mpn_add_nc mpn_sub_n mpn_sub_nc)
-
-
-C mp_limb_t M4_function_n (mp_ptr dst, mp_srcptr src1, mp_srcptr src2,
-C mp_size_t size);
-C mp_limb_t M4_function_nc (mp_ptr dst, mp_srcptr src1, mp_srcptr src2,
-C mp_size_t size, mp_limb_t carry);
-
-defframe(PARAM_CARRY,20)
-defframe(PARAM_SIZE, 16)
-defframe(PARAM_SRC2, 12)
-defframe(PARAM_SRC1, 8)
-defframe(PARAM_DST, 4)
-
- .text
- ALIGN(8)
-
-PROLOGUE(M4_function_nc)
-deflit(`FRAME',0)
-
- pushl %edi FRAME_pushl()
- pushl %esi FRAME_pushl()
-
- movl PARAM_DST,%edi
- movl PARAM_SRC1,%esi
- movl PARAM_SRC2,%edx
- movl PARAM_SIZE,%ecx
-
- movl %ecx,%eax
- shrl $3,%ecx C compute count for unrolled loop
- negl %eax
- andl $7,%eax C get index where to start loop
- jz LF(M4_function_n,oopgo) C necessary special case for 0
- incl %ecx C adjust loop count
- shll $2,%eax C adjustment for pointers...
- subl %eax,%edi C ... since they are offset ...
- subl %eax,%esi C ... by a constant when we ...
- subl %eax,%edx C ... enter the loop
- shrl $2,%eax C restore previous value
-
-ifdef(`PIC',`
- C Calculate start address in loop for PIC. Due to limitations in
- C old gas, LF(M4_function_n,oop)-L(0a)-3 cannot be put into the leal
- call L(0a)
-L(0a): leal (%eax,%eax,8),%eax
- addl (%esp),%eax
- addl $LF(M4_function_n,oop)-L(0a)-3,%eax
- addl $4,%esp
-',`
- C Calculate start address in loop for non-PIC.
- leal LF(M4_function_n,oop)-3(%eax,%eax,8),%eax
-')
-
- C These lines initialize carry from the 5th parameter. Should be
- C possible to simplify.
- pushl %ebp FRAME_pushl()
- movl PARAM_CARRY,%ebp
- shrl $1,%ebp C shift bit 0 into carry
- popl %ebp FRAME_popl()
-
- jmp *%eax C jump into loop
-
-EPILOGUE()
-
-
- ALIGN(8)
-PROLOGUE(M4_function_n)
-deflit(`FRAME',0)
-
- pushl %edi FRAME_pushl()
- pushl %esi FRAME_pushl()
-
- movl PARAM_DST,%edi
- movl PARAM_SRC1,%esi
- movl PARAM_SRC2,%edx
- movl PARAM_SIZE,%ecx
-
- movl %ecx,%eax
- shrl $3,%ecx C compute count for unrolled loop
- negl %eax
- andl $7,%eax C get index where to start loop
- jz L(oop) C necessary special case for 0
- incl %ecx C adjust loop count
- shll $2,%eax C adjustment for pointers...
- subl %eax,%edi C ... since they are offset ...
- subl %eax,%esi C ... by a constant when we ...
- subl %eax,%edx C ... enter the loop
- shrl $2,%eax C restore previous value
-
-ifdef(`PIC',`
- C Calculate start address in loop for PIC. Due to limitations in
- C some assemblers, L(oop)-L(0b)-3 cannot be put into the leal
- call L(0b)
-L(0b): leal (%eax,%eax,8),%eax
- addl (%esp),%eax
- addl $L(oop)-L(0b)-3,%eax
- addl $4,%esp
-',`
- C Calculate start address in loop for non-PIC.
- leal L(oop)-3(%eax,%eax,8),%eax
-')
- jmp *%eax C jump into loop
-
-L(oopgo):
- pushl %ebp FRAME_pushl()
- movl PARAM_CARRY,%ebp
- shrl $1,%ebp C shift bit 0 into carry
- popl %ebp FRAME_popl()
-
- ALIGN(8)
-L(oop): movl (%esi),%eax
- M4_inst (%edx),%eax
- movl %eax,(%edi)
- movl 4(%esi),%eax
- M4_inst 4(%edx),%eax
- movl %eax,4(%edi)
- movl 8(%esi),%eax
- M4_inst 8(%edx),%eax
- movl %eax,8(%edi)
- movl 12(%esi),%eax
- M4_inst 12(%edx),%eax
- movl %eax,12(%edi)
- movl 16(%esi),%eax
- M4_inst 16(%edx),%eax
- movl %eax,16(%edi)
- movl 20(%esi),%eax
- M4_inst 20(%edx),%eax
- movl %eax,20(%edi)
- movl 24(%esi),%eax
- M4_inst 24(%edx),%eax
- movl %eax,24(%edi)
- movl 28(%esi),%eax
- M4_inst 28(%edx),%eax
- movl %eax,28(%edi)
- leal 32(%edi),%edi
- leal 32(%esi),%esi
- leal 32(%edx),%edx
- decl %ecx
- jnz L(oop)
-
- sbbl %eax,%eax
- negl %eax
-
- popl %esi
- popl %edi
- ret
-
-EPILOGUE()
projects / ghc-hetmet.git / blobdiff