diff options
Diffstat (limited to 'sysdeps/m68k/m68020/sub_n.S')
| -rw-r--r-- | sysdeps/m68k/m68020/sub_n.S | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/sysdeps/m68k/m68020/sub_n.S b/sysdeps/m68k/m68020/sub_n.S deleted file mode 100644 index 19f0ec1568..0000000000 --- a/sysdeps/m68k/m68020/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 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 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 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 Library General Public -License for more details. - -You should have received a copy of the GNU Library General Public License -along with the GNU MP Library; see the file COPYING.LIB. If not, write to -the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* - INPUT PARAMETERS - res_ptr (sp + 4) - s1_ptr (sp + 8) - s2_ptr (sp + 16) - size (sp + 12) -*/ - -#include "asm-syntax.h" - - TEXT - ALIGN - GLOBL ___mpn_sub_n - -LAB(___mpn_sub_n) -/* Save used registers on the stack. */ - INSN2(move,l ,MEM_PREDEC(sp),d2) - INSN2(move,l ,MEM_PREDEC(sp),a2) - -/* Copy the arguments to registers. Better use movem? */ - INSN2(move,l ,a2,MEM_DISP(sp,12)) - INSN2(move,l ,a0,MEM_DISP(sp,16)) - INSN2(move,l ,a1,MEM_DISP(sp,20)) - INSN2(move,l ,d2,MEM_DISP(sp,24)) - - INSN2(eor,w ,d2,#1) - INSN2(lsr,l ,d2,#1) - bcc L1 - INSN2(subq,l ,d2,#1) /* clears cy as side effect */ - -LAB(Loop) - INSN2(move,l ,d0,MEM_POSTINC(a0)) - INSN2(move,l ,d1,MEM_POSTINC(a1)) - INSN2(subx,l ,d0,d1) - INSN2(move,l ,MEM_POSTINC(a2),d0) -LAB(L1) INSN2(move,l ,d0,MEM_POSTINC(a0)) - INSN2(move,l ,d1,MEM_POSTINC(a1)) - INSN2(subx,l ,d0,d1) - INSN2(move,l ,MEM_POSTINC(a2),d0) - - dbf d2,Loop /* loop until 16 lsb of %4 == -1 */ - INSN2(subx,l ,d0,d0) /* d0 <= -cy; save cy as 0 or -1 in d0 */ - INSN2(sub,l ,d2,#0x10000) - bcs L2 - INSN2(add,l ,d0,d0) /* restore cy */ - bra Loop - -LAB(L2) - INSN1(neg,l ,d0) - -/* Restore used registers from stack frame. */ - INSN2(move,l ,a2,MEM_POSTINC(sp)) - INSN2(move,l ,d2,MEM_POSTINC(sp)) - - rts |