config.gcc (epiphany-*-*): New architecture.

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

1 files changed, 85 insertions, 0 deletions

diff --git a/libgcc/config/epiphany/udivsi3.S b/libgcc/config/epiphany/udivsi3.S
new file mode 100644
index 0000000..1396281
--- /dev/null
+++ b/libgcc/config/epiphany/udivsi3.S
@@ -0,0 +1,85 @@
+/* Unsigned 32 bit division optimized for Epiphany.
+   Copyright (C) 2009 Free Software Foundation, Inc.
+   Contributed by Embecosm on behalf of Adapteva, Inc.
+
+This file is part of GCC.
+
+This file is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+This file 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
+General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "epiphany-asm.h"
+
+	FSTAB (__udivsi3,T_UINT)
+	.global SYM(__udivsi3)
+	.balign 4
+	HIDDEN_FUNC(__udivsi3)
+SYM(__udivsi3):
+	sub r3,r0,r1
+	bltu .Lret0
+	mov r3,0x95
+	lsl r12,r3,23 ; 0x4a800000
+	lsl r3,r3,30 ; 0x40000000
+	orr r16,r0,r3
+	orr r2,r1,r3
+	 fsub r16,r16,r3
+	fsub r2,r2,r3
+	 lsr r3,r1,21
+	lsr r17,r0,21
+	movt r17,0x4a80
+	fsub r17,r17,r12
+	 movt r3,0x4a80
+	fsub r3,r3,r12
+	 mov r12,%low(.L0step)
+	movt r12,%high(.L0step)
+	mov r21,1
+	movne r16,r17
+	lsr r17,r1,21
+	movne r2,r3
+	lsr r3,r16,23 ; must mask lower bits of r2 in case op0 was ..
+	lsr r2,r2,23 ; .. shifted and op1 was not.
+	sub r3,r3,r2 ; calculate bit number difference.
+	lsl r1,r1,r3
+	lsr r16,r1,1
+	lsl r2,r21,r3
+	lsl r3,r3,3
+	sub r12,r12,r3
+	sub r3,r0,r1
+	movltu r3,r0
+	mov r0,0
+	movgteu r0,r2
+	lsr r2,r2,1
+	add r17,r2,r0
+	sub r1,r3,r16
+	movgteu r3,r1
+	movgteu r0,r17
+	sub r16,r16,1
+	jr r12
+	.rep 30
+	lsl r3,r3,1
+	sub r1,r3,r16
+	movgteu r3,r1
+	.endr
+	sub r2,r2,1 ; mask result bits from steps ...
+	and r3,r3,r2
+	orr r0,r0,r3 ; ... and combine with first bits.
+	nop
+.L0step:rts
+.Lret0:	mov r0,0
+	rts
+	ENDFUNC(__udivsi3)