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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /sysdeps/m68k/m680x0/lshift.S | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.gz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.xz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'sysdeps/m68k/m680x0/lshift.S')
-rw-r--r-- | sysdeps/m68k/m680x0/lshift.S | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/sysdeps/m68k/m680x0/lshift.S b/sysdeps/m68k/m680x0/lshift.S deleted file mode 100644 index 16b1b2f210..0000000000 --- a/sysdeps/m68k/m680x0/lshift.S +++ /dev/null @@ -1,168 +0,0 @@ -/* mc68020 __mpn_lshift -- Shift left a low-level natural-number integer. - -Copyright (C) 1996-2017 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. If not, see <http://www.gnu.org/licenses/>. */ - -/* - 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_lshift) - -/* Save used registers on the stack. */ - moveml R(d2)-R(d6)/R(a2),MEM_PREDEC(sp) - cfi_adjust_cfa_offset (6*4) - cfi_rel_offset (R(d2), 0) - cfi_rel_offset (R(d3), 4) - cfi_rel_offset (R(d4), 8) - cfi_rel_offset (R(d5), 12) - cfi_rel_offset (R(d6), 16) - cfi_rel_offset (R(a2), 20) - -/* 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(s_ptr),R(res_ptr) - bls L(Lspecial) /* jump if s_ptr >= res_ptr */ -#if (defined (__mc68020__) || defined (__NeXT__) || defined(mc68020)) - lea MEM_INDX1(s_ptr,s_size,l,4),R(a2) -#else /* not mc68020 */ - movel R(s_size),R(d0) - asll #2,R(d0) - lea MEM_INDX(s_ptr,d0,l),R(a2) -#endif - cmpl R(res_ptr),R(a2) - bls L(Lspecial) /* jump if res_ptr >= s_ptr + s_size */ - -L(Lnormal:) - moveql #32,R(d5) - subl R(cnt),R(d5) - -#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 - movel MEM_PREDEC(s_ptr),R(d2) - movel R(d2),R(d0) - lsrl R(d5),R(d0) /* compute carry limb */ - - lsll 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_PREDEC(s_ptr),R(d2) - movel R(d2),R(d3) - lsrl R(d5),R(d3) - orl R(d3),R(d1) - movel R(d1),MEM_PREDEC(res_ptr) - lsll R(cnt),R(d2) -L(L1:) - movel MEM_PREDEC(s_ptr),R(d1) - movel R(d1),R(d3) - lsrl R(d5),R(d3) - orl R(d3),R(d2) - movel R(d2),MEM_PREDEC(res_ptr) - lsll R(cnt),R(d1) - - dbf R(s_size),L(Loop) - subl #0x10000,R(s_size) - bcc L(Loop) - -L(Lend:) - movel R(d1),MEM_PREDEC(res_ptr) /* store least significant limb */ - -/* Restore used registers from stack frame. */ - moveml MEM_POSTINC(sp),R(d2)-R(d6)/R(a2) - cfi_remember_state - cfi_adjust_cfa_offset (-6*4) - cfi_restore (R(d2)) - cfi_restore (R(d3)) - cfi_restore (R(d4)) - cfi_restore (R(d5)) - cfi_restore (R(d6)) - cfi_restore (R(a2)) - rts - -/* We loop from least 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. */ - - cfi_restore_state -L(Lspecial:) - 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_POSTINC(s_ptr),R(d2) - addxl R(d2),R(d2) - movel R(d2),MEM_POSTINC(res_ptr) -L(LL1:) - movel MEM_POSTINC(s_ptr),R(d2) - addxl R(d2),R(d2) - movel R(d2),MEM_POSTINC(res_ptr) - - dbf R(s_size),L(LLoop) - addxl R(d0),R(d0) /* save cy in lsb */ - subl #0x10000,R(s_size) - bcs L(LLend) - lsrl #1,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) - cfi_adjust_cfa_offset (-6*4) - cfi_restore (R(d2)) - cfi_restore (R(d3)) - cfi_restore (R(d4)) - cfi_restore (R(d5)) - cfi_restore (R(d6)) - cfi_restore (R(a2)) - rts -END(__mpn_lshift) |