feeeff5cfe
gcc: * config.gcc (epiphany-*-*): New architecture. (epiphany-*-elf): New configuration. * config/epiphany, common/config/epiphany : New directories. * doc/extend.texi (disinterrupt attribute): Add Epiphany. (interrupt attribute): Add Epiphany. (long_call, short_call attribute): Add Epiphany. * doc/invoke.texi (Options): Add Epiphany options. * doc/md.texi (Machine Constraints): Add Epiphany constraints. * doc/install.texi (Options specification): Add --with-stack-offset=@var{num} description. (host/target specific issues): Add epiphany-*-elf. * doc/contrib.texi (Contributors): Mention Epiphany port. gcc/testsuite: * gcc.c-torture/execute/ieee/mul-subnormal-single-1.x: Disable test on Epiphany. * gcc.c-torture/execute/20101011-1.c: Disable test on Epiphany. * gcc.dg/stack-usage-1.c [__epiphany__] (SIZE): Define. * gcc.dg/pragma-pack-3.c: Disable test on Epiphany. * g++.dg/parse/pragma3.C: Likewise. * stackalign/builtin-apply-2.c (STACK_ARGUMENTS_SIZE): Define. (bar): Use it. * gcc.dg/weak/typeof-2.c [epiphany-*-*]: Add option -mshort-calls. * gcc.dg/tls/thr-cse-1.c: Likewise. * g++.dg/opt/devirt2.C: Likewise. * gcc.dg/20020312-2.c [epiphany-*-*] (PIC_REG): Define. * gcc.dg/builtin-apply2.c [__epiphany__]: (STACK_ARGUMENTS_SIZE): 20. * gcc.target/epiphany: New directory. libgcc: * config.host (epiphany-*-elf*): New configuration. * config/epiphany: New Directory. contrib: * contrib-list.mk: Add Epiphany configurations. From-SVN: r181016
78 lines
2.2 KiB
ArmAsm
78 lines
2.2 KiB
ArmAsm
/* Signed 32 bit modulo optimized for Epiphany.
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Copyright (C) 2009 Free Software Foundation, Inc.
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Contributed by Embecosm on behalf of Adapteva, Inc.
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This file is part of GCC.
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "epiphany-asm.h"
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FSTAB (__modsi3,T_INT)
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.global SYM(__modsi3)
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.balign 4
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HIDDEN_FUNC(__modsi3)
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SYM(__modsi3):
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asr r17,r0,31 ; save sign
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mov r2,0
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sub r3,r2,r0
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movgt r0,r3
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sub r3,r2,r1
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movgt r1,r3
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movt r2,0xa000 ; 0xa0000000
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orr r3,r2,r0
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lsr r15,r0,16
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movt r15,0xa800
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movne r3,r15
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lsr r16,r2,2 ; 0x28000000
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and r15,r3,r16
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fadd r12,r3,r15
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orr r3,r2,r1
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lsr r2,r1,16
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movt r2,0xa800
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movne r3,r2
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and r2,r16,r3
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fadd r3,r3,r2
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sub r2,r0,r1
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bltu .Lret_a
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lsr r12,r12,23
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mov r2,%low(.L0step)
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movt r2,%high(.L0step)
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lsr r3,r3,23
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sub r3,r12,r3 ; calculate bit number difference.
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lsl r3,r3,3
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sub r2,r2,r3
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jr r2
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/* lsl_l r2,r1,n` sub r2,r0,r2` movgteu r0,r2 */
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#define STEP(n) .long 0x0006441f | (n) << 5` sub r2,r0,r2` movgteu r0,r2
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.balign 8,,2
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STEP(31)` STEP(30)` STEP(29)` STEP(28)`
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STEP(27)` STEP(26)` STEP(25)` STEP(24)`
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STEP(23)` STEP(22)` STEP(21)` STEP(20)`
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STEP(19)` STEP(18)` STEP(17)` STEP(16)`
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STEP(15)` STEP(14)` STEP(13)` STEP(12)`
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STEP(11)` STEP(10)` STEP(9)` STEP(8)`
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STEP(7)` STEP(6)` STEP(5)` STEP(4)` STEP(3)` STEP(2)` STEP(1)
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.L0step:STEP(0)
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.Lret_a:eor r0,r0,r17 ; restore sign
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sub r0,r0,r17
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rts
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ENDFUNC(__modsi3)
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