diff options
Diffstat (limited to 'ports/sysdeps/arm/add_n.S')
| -rw-r--r-- | ports/sysdeps/arm/add_n.S | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/ports/sysdeps/arm/add_n.S b/ports/sysdeps/arm/add_n.S deleted file mode 100644 index 4cc1ac287f..0000000000 --- a/ports/sysdeps/arm/add_n.S +++ /dev/null @@ -1,99 +0,0 @@ -/* mpn_add_n -- add (or subtract) bignums. - Copyright (C) 2013-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C 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 C 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 C Library. If not, see - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> -#include <arm-features.h> - - .syntax unified - .text - -#ifdef USE_AS_SUB_N -# define INITC cmp r0, r0 -# define OPC sbcs -# define RETC sbc r0, r0, r0; neg r0, r0 -# define FUNC __mpn_sub_n -#else -# define INITC cmn r0, #0 -# define OPC adcs -# define RETC mov r0, #0; adc r0, r0, r0 -# define FUNC __mpn_add_n -#endif - -/* mp_limb_t mpn_add_n(res_ptr, src1_ptr, src2_ptr, size) */ - -ENTRY (FUNC) - push { r4, r5, r6, r7, r8, r10, lr } - cfi_adjust_cfa_offset (28) - cfi_rel_offset (r4, 0) - cfi_rel_offset (r5, 4) - cfi_rel_offset (r6, 8) - cfi_rel_offset (r7, 12) - cfi_rel_offset (r8, 16) - cfi_rel_offset (r10, 20) - cfi_rel_offset (lr, 24) - - INITC /* initialize carry flag */ - tst r3, #1 /* count & 1 == 1? */ - add lr, r1, r3, lsl #2 /* compute end src1 */ - beq 1f - - sfi_breg r1, \ - ldr r4, [\B], #4 /* do one to make count even */ - sfi_breg r2, \ - ldr r5, [\B], #4 - OPC r4, r4, r5 - teq r1, lr /* end of count? (preserve carry) */ - sfi_breg r0, \ - str r4, [\B], #4 - beq 9f -1: - tst r3, #2 /* count & 2 == 2? */ - beq 2f - sfi_breg r1, \ - ldm \B!, { r4, r5 } /* do two to make count 0 mod 4 */ - sfi_breg r2, \ - ldm \B!, { r6, r7 } - OPC r4, r4, r6 - OPC r5, r5, r7 - teq r1, lr /* end of count? */ - sfi_breg r0, \ - stm \B!, { r4, r5 } - beq 9f -2: - sfi_breg r1, \ - ldm \B!, { r3, r5, r7, r10 } /* do four each loop */ - sfi_breg r2, \ - ldm \B!, { r4, r6, r8, ip } - OPC r3, r3, r4 - OPC r5, r5, r6 - OPC r7, r7, r8 - OPC r10, r10, ip - teq r1, lr - sfi_breg r0, \ - stm \B!, { r3, r5, r7, r10 } - bne 2b - -9: - RETC /* copy carry out */ -#ifndef ARM_ALWAYS_BX - pop { r4, r5, r6, r7, r8, r10, pc } -#else - pop { r4, r5, r6, r7, r8, r10, lr } - bx lr -#endif -END (FUNC) |