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Diffstat (limited to 'mpi/m68k/mpih-sub1.S')
-rw-r--r-- | mpi/m68k/mpih-sub1.S | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/mpi/m68k/mpih-sub1.S b/mpi/m68k/mpih-sub1.S deleted file mode 100644 index 1847fbd65..000000000 --- a/mpi/m68k/mpih-sub1.S +++ /dev/null @@ -1,93 +0,0 @@ -/* mc68020 __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and - * store difference in a third limb vector. - * - * Copyright (C) 1992, 1994, 1996, 1998, - * 2001 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 "sysdep.h" -#include "asm-syntax.h" - - -/******************* - * mpi_limb_t - * mpihelp_sub_n( mpi_ptr_t res_ptr, (sp + 4) - * mpi_ptr_t s1_ptr, (sp + 8) - * mpi_ptr_t s2_ptr, (sp + 16) - * mpi_size_t size) (sp + 12) - */ - - - TEXT - ALIGN - GLOBL C_SYMBOL_NAME(mpihelp_sub_n) - -C_SYMBOL_NAME(mpihelp_sub_n:) -PROLOG(mpihelp_sub_n) -/* Save used registers on the stack. */ - movel R(d2),MEM_PREDEC(sp) - movel R(a2),MEM_PREDEC(sp) - -/* Copy the arguments to registers. Better use movem? */ - movel MEM_DISP(sp,12),R(a2) - movel MEM_DISP(sp,16),R(a0) - movel MEM_DISP(sp,20),R(a1) - movel MEM_DISP(sp,24),R(d2) - - eorw #1,R(d2) - lsrl #1,R(d2) - bcc L(L1) - subql #1,R(d2) /* clears cy as side effect */ - -L(Loop:) - movel MEM_POSTINC(a0),R(d0) - movel MEM_POSTINC(a1),R(d1) - subxl R(d1),R(d0) - movel R(d0),MEM_POSTINC(a2) -L(L1:) movel MEM_POSTINC(a0),R(d0) - movel MEM_POSTINC(a1),R(d1) - subxl R(d1),R(d0) - movel R(d0),MEM_POSTINC(a2) - - dbf R(d2),L(Loop) /* loop until 16 lsb of %4 == -1 */ - subxl R(d0),R(d0) /* d0 <= -cy; save cy as 0 or -1 in d0 */ - subl #0x10000,R(d2) - bcs L(L2) - addl R(d0),R(d0) /* restore cy */ - bra L(Loop) - -L(L2:) - negl R(d0) - -/* Restore used registers from stack frame. */ - movel MEM_POSTINC(sp),R(a2) - movel MEM_POSTINC(sp),R(d2) - - rts -EPILOG(mpihelp_sub_n) - - |