File: [local] / OpenXM_contrib / gmp / mpn / x86 / pentium / Attic / logops_n.asm (download)
Revision 1.1.1.1 (vendor branch), Mon Aug 25 16:06:29 2003 UTC (21 years ago) by ohara
Branch: GMP
CVS Tags: VERSION_4_1_2, RELEASE_1_2_3, RELEASE_1_2_2_KNOPPIX_b, RELEASE_1_2_2_KNOPPIX Changes since 1.1: +0 -0
lines
Import gmp 4.1.2
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dnl Intel Pentium mpn_and_n,...,mpn_xnor_n -- bitwise logical operations.
dnl Copyright 2001, 2002 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
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 P5: 3.0 c/l and, ior, xor
C 3.5 c/l andn, iorn, nand, nior, xnor
define(M4_choose_op,
`ifdef(`OPERATION_$1',`
define(`M4_function', `mpn_$1')
define(`M4_want_pre', `$4')
define(`M4op', `$3')
define(`M4_want_post',`$2')
')')
define(M4pre, `ifelse(M4_want_pre, yes,`$1')')
define(M4post,`ifelse(M4_want_post,yes,`$1')')
M4_choose_op( and_n, , andl, )
M4_choose_op( andn_n, , andl, yes)
M4_choose_op( nand_n, yes, andl, )
M4_choose_op( ior_n, , orl, )
M4_choose_op( iorn_n, , orl, yes)
M4_choose_op( nior_n, yes, orl, )
M4_choose_op( xor_n, , xorl, )
M4_choose_op( xnor_n, yes, xorl, )
ifdef(`M4_function',,
`m4_error(`Unrecognised or undefined OPERATION symbol
')')
MULFUNC_PROLOGUE(mpn_and_n mpn_andn_n mpn_nand_n mpn_ior_n mpn_iorn_n mpn_nior_n mpn_xor_n mpn_xnor_n)
NAILS_SUPPORT(0-31)
C void M4_function (mp_ptr wp, mp_srcptr xp, mp_srcptr yp, mp_size_t size);
C
C Nothing complicated here, just some care to avoid data cache bank clashes
C and AGIs.
C
C We're one register short of being able to do a simple 4 loads, 2 ops, 2
C stores. Instead %ebp is juggled a bit and nops are introduced to keep the
C pairings as intended. An in-place operation would free up a register, for
C an 0.5 c/l speedup, if that's worth bothering with.
C
C This code seems best for P55 too. Data alignment is a big problem for MMX
C and the pairing restrictions on movq and integer instructions make life
C difficult.
defframe(PARAM_SIZE,16)
defframe(PARAM_YP, 12)
defframe(PARAM_XP, 8)
defframe(PARAM_WP, 4)
TEXT
ALIGN(8)
PROLOGUE(M4_function)
deflit(`FRAME',0)
pushl %ebx FRAME_pushl()
pushl %esi FRAME_pushl()
pushl %edi FRAME_pushl()
pushl %ebp FRAME_pushl()
movl PARAM_SIZE, %ecx
movl PARAM_XP, %ebx
movl PARAM_YP, %esi
movl PARAM_WP, %edi
shrl %ecx
jnc L(entry)
movl (%ebx,%ecx,8), %eax C risk of data cache bank clash here
movl (%esi,%ecx,8), %edx
M4pre(` notl_or_xorl_GMP_NUMB_MASK(%edx)')
M4op %edx, %eax
M4post(`xorl $GMP_NUMB_MASK, %eax')
orl %ecx, %ecx
movl %eax, (%edi,%ecx,8)
jz L(done)
jmp L(entry)
L(top):
C eax
C ebx xp
C ecx counter, limb pairs, decrementing
C edx
C esi yp
C edi wp
C ebp
M4op %ebp, %edx
nop
M4post(`xorl $GMP_NUMB_MASK, %eax')
M4post(`xorl $GMP_NUMB_MASK, %edx')
movl %eax, 4(%edi,%ecx,8)
movl %edx, (%edi,%ecx,8)
L(entry):
movl -4(%ebx,%ecx,8), %ebp
nop
movl -4(%esi,%ecx,8), %eax
movl -8(%esi,%ecx,8), %edx
M4pre(` xorl $GMP_NUMB_MASK, %eax')
M4pre(` xorl $GMP_NUMB_MASK, %edx')
M4op %ebp, %eax
movl -8(%ebx,%ecx,8), %ebp
decl %ecx
jnz L(top)
M4op %ebp, %edx
nop
M4post(`xorl $GMP_NUMB_MASK, %eax')
M4post(`xorl $GMP_NUMB_MASK, %edx')
movl %eax, 4(%edi,%ecx,8)
movl %edx, (%edi,%ecx,8)
L(done):
popl %ebp
popl %edi
popl %esi
popl %ebx
ret
EPILOGUE()