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Not yet completed changes to support PPC

This commit is contained in:
Werner Koch 1998-11-10 18:35:11 +00:00
parent b076ce3021
commit 95217d480d
20 changed files with 733 additions and 44 deletions
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6
ChangeLog
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@ -1,7 +1,11 @@
Tue Nov 10 19:32:40 1998 Werner Koch (wk@isil.d.shuttle.de)
* configure.in (MPI_SFLAGS): New.
Tue Nov 10 13:44:53 1998 Werner Koch (wk@isil.d.shuttle.de)
* ABOUT-NLS: New
* configure-in (AC_REVISION): New.
* configure.in (AC_REVISION): New.
Sun Nov 8 18:20:35 1998 Werner Koch (wk@isil.d.shuttle.de)

2
VERSION
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@ -1 +1 @@
0.4.3a
0.4.3b

3
configure.in
View File

@ -231,6 +231,7 @@ if test -f $srcdir/mpi/config.links ; then
. $srcdir/mpi/config.links
WK_LINK_FILES($mpi_ln_src, $mpi_ln_dst)
ac_cv_mpi_extra_asm_modules="$mpi_extra_modules"
ac_cv_mpi_sflags="$mpi_sflags"
ac_cv_mpi_config_done="yes"
AC_MSG_RESULT(done)
else
@ -247,6 +248,8 @@ done
AC_MSG_RESULT()
fi
AC_SUBST(MPI_EXTRA_ASM_OBJS)
MPI_SFLAGS="$ac_cv_mpi_sflags"
AC_SUBST(MPI_SFLAGS)
dnl Do we have zlib? Must do it here because Solaris failed
dnl when compiling a conftest (due to the "-lz" from LIBS).

6
mpi/ChangeLog
View File

@ -1,3 +1,9 @@
Tue Nov 10 19:31:37 1998 Werner Koch (wk@isil.d.shuttle.de)
* power*/ : Started with stuff for PPC
* config.links: Some stuff for PPC.
* generic/udiv-w-sdiv.c: New but disabled.
Tue Oct 27 12:37:46 1998 Werner Koch (wk@isil.d.shuttle.de)
* config.links (freebsd): Fixes for FreeBSD 3.0

1
mpi/Makefile.am
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@ -2,6 +2,7 @@
INCLUDES = -I$(top_srcdir)/include
CFLAGS += -O2
SFLAGS = @MPI_SFLAGS@
SUFFIXES = .S .s

37
mpi/config.links
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@ -4,6 +4,7 @@
mpi_extra_modules=
mpi_sflags=
test -d ./mpi || mkdir ./mpi
@ -92,35 +93,59 @@ case "${target}" in
# Motorola 68k configurations. Let m68k mean 68020-68040.
# mc68000 or mc68060 configurations need to be specified explicitly
m680[234]0*-*-linuxaout* | m68k*-*-linuxaout*)
echo '#define MIT_SYNTAX' >./mpi/asm-syntax.h
echo '#define MIT_SYNTAX' >>./mpi/asm-syntax.h
cat $srcdir/mpi/m68k/syntax.h >>./mpi/asm-syntax.h
path="m68k/mc68020 m68k"
;;
m68060*-*-linuxaout*)
echo '#define MIT_SYNTAX' >./mpi/asm-syntax.h
echo '#define MIT_SYNTAX' >>./mpi/asm-syntax.h
cat $srcdir/mpi/m68k/syntax.h >>./mpi/asm-syntax.h
path="m68k"
;;
m680[234]0*-*-linux* | m68k*-*-linux*)
echo '#define ELF_SYNTAX' >./mpi/asm-syntax.h
echo '#define ELF_SYNTAX' >>./mpi/asm-syntax.h
cat $srcdir/mpi/m68k/syntax.h >>./mpi/asm-syntax.h
path="m68k/mc68020 m68k"
;;
m68060*-*-linux*)
echo '#define ELF_SYNTAX' >./mpi/asm-syntax.h
echo '#define ELF_SYNTAX' >>./mpi/asm-syntax.h
cat $srcdir/mpi/m68k/syntax.h >>./mpi/asm-syntax.h
path="m68k"
;;
m68000*-*-* | m68060*-*-*)
echo '#define MIT_SYNTAX' >./mpi/asm-syntax.h
echo '#define MIT_SYNTAX' >>./mpi/asm-syntax.h
cat $srcdir/mpi/m68k/syntax.h >>./mpi/asm-syntax.h
path="m68k/mc68000"
;;
m680[234]0*-*-* | m68k*-*-*)
echo '#define MIT_SYNTAX' >./mpi/asm-syntax.h
echo '#define MIT_SYNTAX' >>./mpi/asm-syntax.h
cat $srcdir/mpi/m68k/syntax.h >>./mpi/asm-syntax.h
path="m68k/mc68020 m68k"
;;
rs6000-*-aix[456789]* | rs6000-*-aix3.2.[456789])
mpi_sflags="-Wa,-mpwr"
path="power"
mpi_extra_modules="udiv-w-sdiv"
;;
rs6000-*-* | power-*-* | power2-*-*)
mpi_sflags="-Wa,-mppc"
path="power"
mpi_extra_modules="udiv-w-sdiv"
;;
ppc601-*-*)
mpi_sflags="-Wa,-mppc"
path="power powerpc32"
;;
ppc60[234]*-*-* | powerpc*-*-*)
mpi_sflags="-Wa,-mppc"
path="powerpc32"
;;
ppc620-*-* | powerpc64*-*-*)
mpi_sflags="-Wa,-mppc"
path="powerpc64"
;;
*)
echo '/* No assembler modules configured */' >>./mpi/asm-syntax.h
path=""

1
mpi/generic/distfiles
View File

@ -5,4 +5,5 @@ mpih-mul3.c
mpih-lshift.c
mpih-rshift.c
mpih-sub1.c
udiv-w-sdiv.c

38
mpi/generic/mpih-shift.c → mpi/generic/mpih-lshift.c
View File

@ -1,6 +1,5 @@
/* mpihelp-shift.c - MPI helper functions
* Copyright (c) 1997 by Werner Koch (dd9jn)
* Copyright (C) 1994, 1996 Free Software Foundation, Inc.
/* mpihelp-lshift.c - MPI helper functions
* Copyright (C) 1994, 1996, 1998 Free Software Foundation, Inc.
*
* This file is part of G10.
*
@ -68,36 +67,3 @@ mpihelp_lshift( mpi_ptr_t wp, mpi_ptr_t up, mpi_size_t usize,
}
/* Shift U (pointed to by UP and USIZE limbs long) CNT bits to the right
* and store the USIZE least significant limbs of the result at WP.
* The bits shifted out to the right are returned.
*
* Argument constraints:
* 1. 0 < CNT < BITS_PER_MP_LIMB
* 2. If the result is to be written over the input, WP must be <= UP.
*/
mpi_limb_t
mpihelp_rshift( mpi_ptr_t wp, mpi_ptr_t up, mpi_size_t usize, unsigned cnt)
{
mpi_limb_t high_limb, low_limb;
unsigned sh_1, sh_2;
mpi_size_t i;
mpi_limb_t retval;
sh_1 = cnt;
wp -= 1;
sh_2 = BITS_PER_MPI_LIMB - sh_1;
high_limb = up[0];
retval = high_limb << sh_2;
low_limb = high_limb;
for( i=1; i < usize; i++) {
high_limb = up[i];
wp[i] = (low_limb >> sh_1) | (high_limb << sh_2);
low_limb = high_limb;
}
wp[i] = low_limb >> sh_1;
return retval;
}

67
mpi/generic/mpih-rshift.c Normal file
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@ -0,0 +1,67 @@
/* mpih-rshift.c - MPI helper functions
* Copyright (C) 1994, 1996, 1998 Free Software Foundation, Inc.
*
* This file is part of GNUPG
*
* GNUPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GNUPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* Note: This code is heavily based on the GNU MP Library.
* Actually it's the same code with only minor changes in the
* way the data is stored; this is to support the abstraction
* of an optional secure memory allocation which may be used
* to avoid revealing of sensitive data due to paging etc.
* The GNU MP Library itself is published under the LGPL;
* however I decided to publish this code under the plain GPL.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include "mpi-internal.h"
/* Shift U (pointed to by UP and USIZE limbs long) CNT bits to the right
* and store the USIZE least significant limbs of the result at WP.
* The bits shifted out to the right are returned.
*
* Argument constraints:
* 1. 0 < CNT < BITS_PER_MP_LIMB
* 2. If the result is to be written over the input, WP must be <= UP.
*/
mpi_limb_t
mpihelp_rshift( mpi_ptr_t wp, mpi_ptr_t up, mpi_size_t usize, unsigned cnt)
{
mpi_limb_t high_limb, low_limb;
unsigned sh_1, sh_2;
mpi_size_t i;
mpi_limb_t retval;
sh_1 = cnt;
wp -= 1;
sh_2 = BITS_PER_MPI_LIMB - sh_1;
high_limb = up[0];
retval = high_limb << sh_2;
low_limb = high_limb;
for( i=1; i < usize; i++) {
high_limb = up[i];
wp[i] = (low_limb >> sh_1) | (high_limb << sh_2);
low_limb = high_limb;
}
wp[i] = low_limb >> sh_1;
return retval;
}

135
mpi/generic/udiv-w-sdiv.c Normal file
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@ -0,0 +1,135 @@
/* mpihelp_udiv_w_sdiv -- implement udiv_qrnnd on machines with only signed
* division.
*
* Contributed by Peter L. Montgomery.
*
* Copyright (C) 1992, 1994, 1996, 1998 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include "mpi-internal.h"
#include "longlong.h"
#if 0 /* not yet ported to MPI */
mpi_limb_t
mpihelp_udiv_w_sdiv( mpi_limp_t *rp,
mpi_limp_t *a1,
mpi_limp_t *a0,
mpi_limp_t *d )
{
mp_limb_t q, r;
mp_limb_t c0, c1, b1;
if ((mpi_limb_signed_t) d >= 0)
{
if (a1 < d - a1 - (a0 >> (BITS_PER_MP_LIMB - 1)))
{
/* dividend, divisor, and quotient are nonnegative */
sdiv_qrnnd (q, r, a1, a0, d);
}
else
{
/* Compute c1*2^32 + c0 = a1*2^32 + a0 - 2^31*d */
sub_ddmmss (c1, c0, a1, a0, d >> 1, d << (BITS_PER_MP_LIMB - 1));
/* Divide (c1*2^32 + c0) by d */
sdiv_qrnnd (q, r, c1, c0, d);
/* Add 2^31 to quotient */
q += (mp_limb_t) 1 << (BITS_PER_MP_LIMB - 1);
}
}
else
{
b1 = d >> 1; /* d/2, between 2^30 and 2^31 - 1 */
c1 = a1 >> 1; /* A/2 */
c0 = (a1 << (BITS_PER_MP_LIMB - 1)) + (a0 >> 1);
if (a1 < b1) /* A < 2^32*b1, so A/2 < 2^31*b1 */
{
sdiv_qrnnd (q, r, c1, c0, b1); /* (A/2) / (d/2) */
r = 2*r + (a0 & 1); /* Remainder from A/(2*b1) */
if ((d & 1) != 0)
{
if (r >= q)
r = r - q;
else if (q - r <= d)
{
r = r - q + d;
q--;
}
else
{
r = r - q + 2*d;
q -= 2;
}
}
}
else if (c1 < b1) /* So 2^31 <= (A/2)/b1 < 2^32 */
{
c1 = (b1 - 1) - c1;
c0 = ~c0; /* logical NOT */
sdiv_qrnnd (q, r, c1, c0, b1); /* (A/2) / (d/2) */
q = ~q; /* (A/2)/b1 */
r = (b1 - 1) - r;
r = 2*r + (a0 & 1); /* A/(2*b1) */
if ((d & 1) != 0)
{
if (r >= q)
r = r - q;
else if (q - r <= d)
{
r = r - q + d;
q--;
}
else
{
r = r - q + 2*d;
q -= 2;
}
}
}
else /* Implies c1 = b1 */
{ /* Hence a1 = d - 1 = 2*b1 - 1 */
if (a0 >= -d)
{
q = -1;
r = a0 + d;
}
else
{
q = -2;
r = a0 + 2*d;
}
}
}
*rp = r;
return q;
}
#endif

0
mpi/power/distfiles Normal file
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8
mpi/powerpc32/distfiles Normal file
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@ -0,0 +1,8 @@
mpih-add1.S
mpih-sub1.S
mpih-mul1.S
mpih-mul2.S
mpih-mul3.S
mpih-lshift.S
mpih-rshift.S

60
mpi/powerpc32/mpih-add1.S Normal file
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@ -0,0 +1,60 @@
/* PowerPC-32 add_n -- Add two limb vectors of equal, non-zero length.
*
* Copyright (C) 1992, 1994, 1995, 1998 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/*******************
* mpi_limb_t
* mpihelp_add_n( mpi_ptr_t res_ptr, (r3)
* mpi_ptr_t s1_ptr, (r4)
* mpi_ptr_t s2_ptr, (r5)
* mpi_size_t size) (r6)
*/
.toc
.extern mpihelp_add_n[DS]
.extern .mpihelp_add_n
.csect [PR]
.align 2
.globl mpihelp_add_n
.globl .mpihelp_add_n
.csect mpihelp_add_n[DS]
mpihelp_add_n:
.long .mpihelp_add_n, TOC[tc0], 0
.csect [PR]
.mpihelp_add_n:
mtctr 6 # copy size into CTR
lwz 8,0(4) # load least significant s1 limb
lwz 0,0(5) # load least significant s2 limb
addi 3,3,-4 # offset res_ptr, it's updated before used
addc 7,0,8 # add least significant limbs, set cy
bdz Lend # If done, skip loop
Loop: lwzu 8,4(4) # load s1 limb and update s1_ptr
lwzu 0,4(5) # load s2 limb and update s2_ptr
stwu 7,4(3) # store previous limb in load latency slot
adde 7,0,8 # add new limbs with cy, set cy
bdnz Loop # decrement CTR and loop back
Lend: stw 7,4(3) # store ultimate result limb
li 3,0 # load cy into ...
addze 3,3 # ... return value register
blr

71
mpi/powerpc32/mpih-lshift.S Normal file
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@ -0,0 +1,71 @@
/* PowerPC-32 lshift
*
* Copyright (C) 1995, 1998 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/*******************
* mpi_limb_t
* mpihelp_lshift( mpi_ptr_t wp, (r3)
* mpi_ptr_t up, (r4)
* mpi_size_t usize, (r5)
* unsigned cnt) (r6)
*/
.toc
.csect .text[PR]
.align 2
.globl mpihelp_lshift
.globl .mpihelp_lshift
.csect mpihelp_lshift[DS]
mpihelp_lshift:
.long .mpihelp_lshift, TOC[tc0], 0
.csect .text[PR]
.mpihelp_lshift:
mtctr 5 # copy size into CTR
slwi 0,5,2
add 7,3,0 # make r7 point at end of res
add 4,4,0 # make r4 point at end of s1
subfic 8,6,32
lwzu 11,-4(4) # load first s1 limb
srw 3,11,8 # compute function return value
bdz Lend1
Loop: lwzu 10,-4(4)
slw 9,11,6
srw 12,10,8
or 9,9,12
stwu 9,-4(7)
bdz Lend2
lwzu 11,-4(4)
slw 9,10,6
srw 12,11,8
or 9,9,12
stwu 9,-4(7)
bdnz Loop
Lend1: slw 0,11,6
stw 0,-4(7)
blr
Lend2: slw 0,10,6
stw 0,-4(7)
blr

67
mpi/powerpc32/mpih-mul1.S Normal file
View File

@ -0,0 +1,67 @@
/* PowerPC-32 mul_1 -- Multiply a limb vector with a limb and store
* the result in a second limb vector.
*
* Copyright (C) 1993, 1994, 1995, 1998 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/*******************
* mpi_limb_t
* mpihelp_mul_1( mpi_ptr_t res_ptr, (r3)
* mpi_ptr_t s1_ptr, (r4)
* mpi_size_t s1_size, (r5)
* mpi_limb_t s2_limb) (r6)
*
* This is a fairly straightforward implementation. The timing of the PC601
* is hard to understand, so I will wait to optimize this until I have some
* hardware to play with.
*
* The code trivially generalizes to 64 bit limbs for the PC620.
*/
.toc
.csect .mpihelp_mul_1[PR]
.align 2
.globl mpihelp_mul_1
.globl .mpihelp_mul_1
.csect mpihelp_mul_1[DS]
mpihelp_mul_1:
.long .mpihelp_mul_1[PR], TOC[tc0], 0
.csect .mpihelp_mul_1[PR]
.mpihelp_mul_1:
mtctr 5
lwz 0,0(4)
mullw 7,0,6
mulhwu 10,0,6
addi 3,3,-4 # adjust res_ptr
addic 5,5,0 # clear cy with dummy insn
bdz Lend
Loop: lwzu 0,4(4)
stwu 7,4(3)
mullw 8,0,6
adde 7,8,10
mulhwu 10,0,6
bdnz Loop
Lend: stw 7,4(3)
addze 3,10
blr

73
mpi/powerpc32/mpih-mul2.S Normal file
View File

@ -0,0 +1,73 @@
/* PowerPC-32 addmul_1 -- Multiply a limb vector with a limb and add
* the result to a second limb vector.
* Copyright (C) 1995, 1998 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/*******************
* mpi_limb_t
* mpihelp_addmul_1( mpi_ptr_t res_ptr, (r3)
* mpi_ptr_t s1_ptr, (r4)
* mpi_size_t s1_size, (r5)
* mpi_limb_t s2_limb) (r6)
*
* This is a fairly straightforward implementation. The timing of the PC601
* is hard to understand, so I will wait to optimize this until I have some
* hardware to play with.
*
* The code trivially generalizes to 64 bit limbs for the PC620.
*/
.toc
.csect .mpihelp_addmul_1[PR]
.align 2
.globl mpihelp_addmul_1
.globl .mpihelp_addmul_1
.csect mpihelp_addmul_1[DS]
mpihelp_addmul_1:
.long .mpihelp_addmul_1[PR], TOC[tc0], 0
.csect .mpihelp_addmul_1[PR]
.mpihelp_addmul_1:
mtctr 5
lwz 0,0(4)
mullw 7,0,6
mulhwu 10,0,6
lwz 9,0(3)
addc 8,7,9
addi 3,3,-4
bdz Lend
Loop: lwzu 0,4(4)
stwu 8,4(3)
mullw 8,0,6
adde 7,8,10
mulhwu 10,0,6
lwz 9,4(3)
addze 10,10
addc 8,7,9
bdnz Loop
Lend: stw 8,4(3)
addze 3,10
blr

74
mpi/powerpc32/mpih-mul3.S Normal file
View File

@ -0,0 +1,74 @@
/* PowerPC-32 submul_1 -- Multiply a limb vector with a limb and subtract
* the result from a second limb vector.
*
* Copyright (C) 1995, 1998 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/*******************
* mpi_limb_t
* mpihelp_submul_1( mpi_ptr_t res_ptr, (r3)
* mpi_ptr_t s1_ptr, (r4)
* mpi_size_t s1_size, (r5)
* mpi_limb_t s2_limb) (r6)
*
* This is a fairly straightforward implementation. The timing of the PC601
* is hard to understand, so I will wait to optimize this until I have some
* hardware to play with.
*
* The code trivially generalizes to 64 bit limbs for the PC620.
*/
.toc
.csect .mpihelp_submul_1[PR]
.align 2
.globl mpihelp_submul_1
.globl .mpihelp_submul_1
.csect mpihelp_submul_1[DS]
mpihelp_submul_1:
.long .mpihelp_submul_1[PR], TOC[tc0], 0
.csect .mpihelp_submul_1[PR]
.mpihelp_submul_1:
mtctr 5
lwz 0,0(4)
mullw 7,0,6
mulhwu 10,0,6
lwz 9,0(3)
subfc 8,7,9
addc 7,7,8 # invert cy (r7 is junk)
addi 3,3,-4
bdz Lend
Loop: lwzu 0,4(4)
stwu 8,4(3)
mullw 8,0,6
adde 7,8,10
mulhwu 10,0,6
lwz 9,4(3)
addze 10,10
subfc 8,7,9
addc 7,7,8 # invert cy (r7 is junk)
bdnz Loop
Lend: stw 8,4(3)
addze 3,10
blr

68
mpi/powerpc32/mpih-rshift.S Normal file
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/* PowerPC-32 rshift
*
* Copyright (C) 1995, 1998 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/*******************
* mpi_limb_t
* mpihelp_rshift( mpi_ptr_t wp, (r3)
* mpi_ptr_t up, (r4)
* mpi_size_t usize, (r5)
* unsigned cnt) (r6)
*/
.toc
.csect .text[PR]
.align 2
.globl mpihelp_rshift
.globl .mpihelp_rshift
.csect mpihelp_rshift[DS]
mpihelp_rshift:
.long .mpihelp_rshift, TOC[tc0], 0
.csect .text[PR]
.mpihelp_rshift:
mtctr 5 # copy size into CTR
addi 7,3,-4 # move adjusted res_ptr to free return reg
subfic 8,6,32
lwz 11,0(4) # load first s1 limb
slw 3,11,8 # compute function return value
bdz Lend1
Loop: lwzu 10,4(4)
srw 9,11,6
slw 12,10,8
or 9,9,12
stwu 9,4(7)
bdz Lend2
lwzu 11,4(4)
srw 9,10,6
slw 12,11,8
or 9,9,12
stwu 9,4(7)
bdnz Loop
Lend1: srw 0,11,6
stw 0,4(7)
blr
Lend2: srw 0,10,6
stw 0,4(7)
blr

60
mpi/powerpc32/mpih-sub1.S Normal file
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/* PowerPC-32 sub_n -- Subtract two limb vectors of the same length > 0
* and store difference in a third limb vector.
*
* Copyright (C) 1992, 1994, 1995, 1998 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/*******************
* mpi_limb_t
* mpihelp_sub_n( mpi_ptr_t res_ptr, (r3)
* mpi_ptr_t s1_ptr, (r4)
* mpi_ptr_t s2_ptr, (r5)
* mpi_size_t size) (r6)
*/
.toc
.extern mpihelp_sub_n[DS]
.extern .mpihelp_sub_n
.csect [PR]
.align 2
.globl mpihelp_sub_n
.globl .mpihelp_sub_n
.csect mpihelp_sub_n[DS]
mpihelp_sub_n:
.long .mpihelp_sub_n, TOC[tc0], 0
.csect [PR]
.mpihelp_sub_n:
mtctr 6 # copy size into CTR
lwz 8,0(4) # load least significant s1 limb
lwz 0,0(5) # load least significant s2 limb
addi 3,3,-4 # offset res_ptr, it's updated before used
subfc 7,0,8 # add least significant limbs, set cy
bdz Lend # If done, skip loop
Loop: lwzu 8,4(4) # load s1 limb and update s1_ptr
lwzu 0,4(5) # load s2 limb and update s2_ptr
stwu 7,4(3) # store previous limb in load latency slot
subfe 7,0,8 # add new limbs with cy, set cy
bdnz Loop # decrement CTR and loop back
Lend: stw 7,4(3) # store ultimate result limb
subfe 3,0,0 # load !cy into ...
subfic 3,3,0 # ... return value register
blr

0
mpi/powerpc64/distfiles Normal file
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