From 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Thu, 12 Jul 2007 18:26:36 +0000 Subject: 2.5-18.1 --- sysdeps/m68k/rshift.S | 146 -------------------------------------------------- 1 file changed, 146 deletions(-) delete mode 100644 sysdeps/m68k/rshift.S (limited to 'sysdeps/m68k/rshift.S') diff --git a/sysdeps/m68k/rshift.S b/sysdeps/m68k/rshift.S deleted file mode 100644 index 5e6abceb97..0000000000 --- a/sysdeps/m68k/rshift.S +++ /dev/null @@ -1,146 +0,0 @@ -/* mc68020 __mpn_rshift -- Shift right a low-level natural-number integer. - -Copyright (C) 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) - s_ptr (sp + 8) - s_size (sp + 16) - cnt (sp + 12) -*/ - -#include "sysdep.h" -#include "asm-syntax.h" - -#define res_ptr a1 -#define s_ptr a0 -#define s_size d6 -#define cnt d4 - - TEXT -ENTRY(__mpn_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(Lnormal) - cmpl R(res_ptr),R(s_ptr) - bls L(Lspecial) /* 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(Lspecial) /* jump if s_ptr >= res_ptr + s_size */ - -L(Lnormal:) - 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(Lend) - lsrl #1,R(s_size) - bcs L(L1) - subql #1,R(s_size) - -L(Loop:) - 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(L1:) - 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(Loop) - subl #0x10000,R(s_size) - bcc L(Loop) - -L(Lend:) - 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 - permissible if the source and destination don't overlap, since the - function is documented to work for overlapping source and destination. */ - -L(Lspecial:) -#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(LL1) - subql #1,R(s_size) - -L(LLoop:) - movel MEM_PREDEC(s_ptr),R(d2) - roxrl #1,R(d2) - movel R(d2),MEM_PREDEC(res_ptr) -L(LL1:) - movel MEM_PREDEC(s_ptr),R(d2) - roxrl #1,R(d2) - movel R(d2),MEM_PREDEC(res_ptr) - - dbf R(s_size),L(LLoop) - roxrl #1,R(d0) /* save cy in msb */ - subl #0x10000,R(s_size) - bcs L(LLend) - addl R(d0),R(d0) /* restore cy */ - bra L(LLoop) - -L(LLend:) -/* Restore used registers from stack frame. */ - moveml MEM_POSTINC(sp),R(d2)-R(d6)/R(a2) - rts -END(__mpn_rshift) -- cgit v1.2.3