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Diffstat (limited to 'mpi/powerpc32/mpih-lshift.S')
| -rw-r--r-- | mpi/powerpc32/mpih-lshift.S | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/mpi/powerpc32/mpih-lshift.S b/mpi/powerpc32/mpih-lshift.S deleted file mode 100644 index 4e5da5b7f..000000000 --- a/mpi/powerpc32/mpih-lshift.S +++ /dev/null @@ -1,199 +0,0 @@ -/* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, - * USA. - */ - -#include "sysdep.h" -#include "asm-syntax.h" - - -#ifndef USE_PPC_PATCHES - -/******************* - * 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 - -#else -/* Shift a limb left, low level routine. - Copyright (C) 1996, 1997 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C Library 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. */ - -/* mp_limb_t mpn_lshift (mp_ptr wp, mp_srcptr up, mp_size_t usize, - unsigned int cnt) */ - -EALIGN(mpihelp_lshift,3,0) - mtctr %r5 # copy size into CTR - cmplwi %cr0,%r5,16 # is size < 16 - slwi %r0,%r5,2 - add %r7,%r3,%r0 # make r7 point at end of res - add %r4,%r4,%r0 # make r4 point at end of s1 - lwzu %r11,-4(%r4) # load first s1 limb - subfic %r8,%r6,32 - srw %r3,%r11,%r8 # compute function return value - bge %cr0,L(big) # branch if size >= 16 - - bdz L(end1) - -0: lwzu %r10,-4(%r4) - slw %r9,%r11,%r6 - srw %r12,%r10,%r8 - or %r9,%r9,%r12 - stwu %r9,-4(%r7) - bdz L(end2) - lwzu %r11,-4(%r4) - slw %r9,%r10,%r6 - srw %r12,%r11,%r8 - or %r9,%r9,%r12 - stwu %r9,-4(%r7) - bdnz 0b - -L(end1):slw %r0,%r11,%r6 - stw %r0,-4(%r7) - blr - - -/* Guaranteed not to succeed. */ -L(boom): tweq %r0,%r0 - -/* We imitate a case statement, by using (yuk!) fixed-length code chunks, - of size 4*12 bytes. We have to do this (or something) to make this PIC. */ -L(big): mflr %r9 - bltl- %cr0,L(boom) # Never taken, only used to set LR. - slwi %r10,%r6,4 - mflr %r12 - add %r10,%r12,%r10 - slwi %r8,%r6,5 - add %r10,%r8,%r10 - mtctr %r10 - addi %r5,%r5,-1 - mtlr %r9 - bctr - -L(end2):slw %r0,%r10,%r6 - stw %r0,-4(%r7) - blr - -#define DO_LSHIFT(n) \ - mtctr %r5; \ -0: lwzu %r10,-4(%r4); \ - slwi %r9,%r11,n; \ - inslwi %r9,%r10,n,32-n; \ - stwu %r9,-4(%r7); \ - bdz- L(end2); \ - lwzu %r11,-4(%r4); \ - slwi %r9,%r10,n; \ - inslwi %r9,%r11,n,32-n; \ - stwu %r9,-4(%r7); \ - bdnz 0b; \ - b L(end1) - - DO_LSHIFT(1) - DO_LSHIFT(2) - DO_LSHIFT(3) - DO_LSHIFT(4) - DO_LSHIFT(5) - DO_LSHIFT(6) - DO_LSHIFT(7) - DO_LSHIFT(8) - DO_LSHIFT(9) - DO_LSHIFT(10) - DO_LSHIFT(11) - DO_LSHIFT(12) - DO_LSHIFT(13) - DO_LSHIFT(14) - DO_LSHIFT(15) - DO_LSHIFT(16) - DO_LSHIFT(17) - DO_LSHIFT(18) - DO_LSHIFT(19) - DO_LSHIFT(20) - DO_LSHIFT(21) - DO_LSHIFT(22) - DO_LSHIFT(23) - DO_LSHIFT(24) - DO_LSHIFT(25) - DO_LSHIFT(26) - DO_LSHIFT(27) - DO_LSHIFT(28) - DO_LSHIFT(29) - DO_LSHIFT(30) - DO_LSHIFT(31) - -END(mpihelp_lshift) -#endif |