diff options
Diffstat (limited to 'plugins/MirOTR/libgcrypt-1.4.6/mpi/m68k/mpih-rshift.S')
| -rw-r--r-- | plugins/MirOTR/libgcrypt-1.4.6/mpi/m68k/mpih-rshift.S | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/plugins/MirOTR/libgcrypt-1.4.6/mpi/m68k/mpih-rshift.S b/plugins/MirOTR/libgcrypt-1.4.6/mpi/m68k/mpih-rshift.S deleted file mode 100644 index be9f43502f..0000000000 --- a/plugins/MirOTR/libgcrypt-1.4.6/mpi/m68k/mpih-rshift.S +++ /dev/null @@ -1,162 +0,0 @@ -/* mc68020 rshift -- Shift right a low-level natural-number integer. - * - * Copyright (C) 1996, 1998, 2001, 2002 Free Software Foundation, Inc. - * - * This file is part of Libgcrypt. - * - * Libgcrypt is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as - * published by the Free Software Foundation; either version 2.1 of - * the License, or (at your option) any later version. - * - * Libgcrypt 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 Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser 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. - */ - - -#include "sysdep.h" -#include "asm-syntax.h" - - -/******************* - * mpi_limb_t - * _gcry_mpih_rshift( mpi_ptr_t wp, (sp + 4) - * mpi_ptr_t up, (sp + 8) - * mpi_size_t usize, (sp + 12) - * unsigned cnt) (sp + 16) - */ - -#define res_ptr a1 -#define s_ptr a0 -#define s_size d6 -#define cnt d4 - - TEXT - ALIGN - GLOBL C_SYMBOL_NAME(_gcry_mpih_rshift) - -C_SYMBOL_NAME(_gcry_mpih_rshift:) -PROLOG(_gcry_mpih_rshift) - /* Save used registers on the stack. */ - moveml R(d2)-R(d6)/R(a2),MEM_PREDEC(sp) - - /* Copy the arguments to registers. */ - movel MEM_DISP(sp,28),R(res_ptr) - movel MEM_DISP(sp,32),R(s_ptr) - movel MEM_DISP(sp,36),R(s_size) - movel MEM_DISP(sp,40),R(cnt) - - moveql #1,R(d5) - cmpl R(d5),R(cnt) - bne L(Rnormal) - cmpl R(res_ptr),R(s_ptr) - bls L(Rspecial) /* jump if res_ptr >= s_ptr */ -#if (defined (__mc68020__) || defined (__NeXT__) || defined(mc68020)) - lea MEM_INDX1(res_ptr,s_size,l,4),R(a2) -#else /* not mc68020 */ - movel R(s_size),R(d0) - asll #2,R(d0) - lea MEM_INDX(res_ptr,d0,l),R(a2) -#endif - cmpl R(s_ptr),R(a2) - bls L(Rspecial) /* jump if s_ptr >= res_ptr + s_size */ - -L(Rnormal:) - moveql #32,R(d5) - subl R(cnt),R(d5) - movel MEM_POSTINC(s_ptr),R(d2) - movel R(d2),R(d0) - lsll R(d5),R(d0) /* compute carry limb */ - - lsrl R(cnt),R(d2) - movel R(d2),R(d1) - subql #1,R(s_size) - beq L(Rend) - lsrl #1,R(s_size) - bcs L(R1) - subql #1,R(s_size) - -L(Roop:) - movel MEM_POSTINC(s_ptr),R(d2) - movel R(d2),R(d3) - lsll R(d5),R(d3) - orl R(d3),R(d1) - movel R(d1),MEM_POSTINC(res_ptr) - lsrl R(cnt),R(d2) -L(R1:) - movel MEM_POSTINC(s_ptr),R(d1) - movel R(d1),R(d3) - lsll R(d5),R(d3) - orl R(d3),R(d2) - movel R(d2),MEM_POSTINC(res_ptr) - lsrl R(cnt),R(d1) - - dbf R(s_size),L(Roop) - subl #0x10000,R(s_size) - bcc L(Roop) - -L(Rend:) - movel R(d1),MEM(res_ptr) /* store most significant limb */ - -/* Restore used registers from stack frame. */ - moveml MEM_POSTINC(sp),R(d2)-R(d6)/R(a2) - rts - -/* We loop from most significant end of the arrays, which is only - permissable if the source and destination don't overlap, since the - function is documented to work for overlapping source and destination. */ - -L(Rspecial:) -#if (defined (__mc68020__) || defined (__NeXT__) || defined(mc68020)) - lea MEM_INDX1(s_ptr,s_size,l,4),R(s_ptr) - lea MEM_INDX1(res_ptr,s_size,l,4),R(res_ptr) -#else /* not mc68000 */ - movel R(s_size),R(d0) - asll #2,R(d0) - addl R(s_size),R(s_ptr) - addl R(s_size),R(res_ptr) -#endif - - clrl R(d0) /* initialize carry */ - eorw #1,R(s_size) - lsrl #1,R(s_size) - bcc L(LR1) - subql #1,R(s_size) - -L(LRoop:) - movel MEM_PREDEC(s_ptr),R(d2) - roxrl #1,R(d2) - movel R(d2),MEM_PREDEC(res_ptr) -L(LR1:) - movel MEM_PREDEC(s_ptr),R(d2) - roxrl #1,R(d2) - movel R(d2),MEM_PREDEC(res_ptr) - - dbf R(s_size),L(LRoop) - roxrl #1,R(d0) /* save cy in msb */ - subl #0x10000,R(s_size) - bcs L(LRend) - addl R(d0),R(d0) /* restore cy */ - bra L(LRoop) - -L(LRend:) -/* Restore used registers from stack frame. */ - moveml MEM_POSTINC(sp),R(d2)-R(d6)/R(a2) - rts -EPILOG(_gcry_mpih_rshift) - - - - |