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Diffstat (limited to 'sysdeps/m68k/sub_n.S')
| -rw-r--r-- | sysdeps/m68k/sub_n.S | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/sysdeps/m68k/sub_n.S b/sysdeps/m68k/sub_n.S deleted file mode 100644 index 5833dd2..0000000 --- a/sysdeps/m68k/sub_n.S +++ /dev/null @@ -1,76 +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 Free Software Foundation, Inc. - -This file is part of the GNU MP Library. - -The GNU MP Library 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. - -The GNU MP 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 Lesser General Public -License for more details. - -You should have received a copy of the GNU Lesser General Public License -along with the GNU MP Library; see the file COPYING.LIB. If not, write to -the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, -MA 02111-1307, USA. */ - -/* - INPUT PARAMETERS - res_ptr (sp + 4) - s1_ptr (sp + 8) - s2_ptr (sp + 16) - size (sp + 12) -*/ - -#include "sysdep.h" -#include "asm-syntax.h" - - TEXT -ENTRY(__mpn_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 -END(__mpn_sub_n) |