linux-atomic.asm: New file.

	* config/sh/linux-atomic.asm: New file.
	* config/sh/t-linux (LIB2FUNCS_EXTRA): Add linux-atomic.asm.

From-SVN: r112593

3 files changed, 144 insertions, 1 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d11b14c..d76e2c1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2006-03-31  Kaz Kojima  <kkojima@gcc.gnu.org>
+
+	* config/sh/linux-atomic.asm: New file.
+	* config/sh/t-linux (LIB2FUNCS_EXTRA): Add linux-atomic.asm.
+
 2006-03-31  DJ Delorie  <dj@redhat.com>
 
 	* config/m32c/cond.md: Set condition flags properly throughout.
diff --git a/gcc/config/sh/linux-atomic.asm b/gcc/config/sh/linux-atomic.asm
new file mode 100644
index 0000000..d181fb3
--- /dev/null
+++ b/gcc/config/sh/linux-atomic.asm
@@ -0,0 +1,138 @@
+/* Copyright (C) 2006 Free Software Foundation, Inc.
+
+   This file is part of GCC.
+
+   GCC 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 2, or (at your option)
+   any later version.
+
+   GCC 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.
+
+   You should have received a copy of the GNU General Public License
+   along with GCC; see the file COPYING.  If not, write to
+   the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+/* As a special exception, if you link this library with other files,
+   some of which are compiled with GCC, to produce an executable,
+   this library does not by itself cause the resulting executable
+   to be covered by the GNU General Public License.
+   This exception does not however invalidate any other reasons why
+   the executable file might be covered by the GNU General Public License.  */
+
+!! Linux specific atomic routines for the Renesas / SuperH SH CPUs.
+!! Linux kernel for SH3/4 has implemented the support for software
+!! atomic sequences.
+
+#define FUNC(X)		.type X,@function
+#define HIDDEN_FUNC(X)	FUNC(X); .hidden X
+#define ENDFUNC0(X)	.Lfe_##X: .size X,.Lfe_##X-X
+#define ENDFUNC(X)	ENDFUNC0(X)
+
+#if ! __SH5__
+
+#define ATOMIC_TEST_AND_SET(N,T) \
+	.global	__sync_lock_test_and_set_##N; \
+	HIDDEN_FUNC(__sync_lock_test_and_set_##N); \
+	.align	2; \
+__sync_lock_test_and_set_##N:; \
+	mova	1f, r0; \
+	nop; \
+	mov	r15, r1; \
+	mov	#(0f-1f), r15; \
+0:	mov.##T	@r4, r2; \
+	mov.##T	r5, @r4; \
+1:	mov	r1, r15; \
+	rts; \
+	 mov	r2, r0; \
+	ENDFUNC(__sync_lock_test_and_set_##N)
+
+ATOMIC_TEST_AND_SET (1,b)
+ATOMIC_TEST_AND_SET (2,w)
+ATOMIC_TEST_AND_SET (4,l)
+
+#define ATOMIC_COMPARE_AND_SWAP(N,T) \
+	.global	__sync_compare_and_swap_##N; \
+	HIDDEN_FUNC(__sync_compare_and_swap_##N); \
+	.align	2; \
+__sync_compare_and_swap_##N:; \
+	mova	1f, r0; \
+	nop; \
+	mov	r15, r1; \
+	mov	#(0f-1f), r15; \
+0:	mov.##T	@r4, r2; \
+	cmp/eq	r2, r5; \
+	bf	1f; \
+	mov.##T	r6, @r4; \
+1:	mov	r1, r15; \
+	rts; \
+	 mov	r2, r0; \
+	ENDFUNC(__sync_compare_and_swap_##N)
+
+ATOMIC_COMPARE_AND_SWAP (1,b)
+ATOMIC_COMPARE_AND_SWAP (2,w)
+ATOMIC_COMPARE_AND_SWAP (4,l)
+
+#define ATOMIC_FETCH_AND_OP(OP,N,T) \
+	.global	__sync_fetch_and_##OP##_##N; \
+	HIDDEN_FUNC(__sync_fetch_and_##OP##_##N); \
+	.align	2; \
+__sync_fetch_and_##OP##_##N:; \
+	mova	1f, r0; \
+	mov	r15, r1; \
+	mov	#(0f-1f), r15; \
+0:	mov.##T	@r4, r2; \
+	OP	r2, r5; \
+	mov.##T	r5, @r4; \
+1:	mov	r1, r15; \
+	rts; \
+	 mov	r2, r0; \
+	ENDFUNC(__sync_fetch_and_##OP##_##N)
+
+ATOMIC_FETCH_AND_OP(add,1,b)
+ATOMIC_FETCH_AND_OP(add,2,w)
+ATOMIC_FETCH_AND_OP(add,4,l)
+
+ATOMIC_FETCH_AND_OP(or,1,b)
+ATOMIC_FETCH_AND_OP(or,2,w)
+ATOMIC_FETCH_AND_OP(or,4,l)
+
+ATOMIC_FETCH_AND_OP(and,1,b)
+ATOMIC_FETCH_AND_OP(and,2,w)
+ATOMIC_FETCH_AND_OP(and,4,l)
+
+ATOMIC_FETCH_AND_OP(xor,1,b)
+ATOMIC_FETCH_AND_OP(xor,2,w)
+ATOMIC_FETCH_AND_OP(xor,4,l)
+
+#define ATOMIC_FETCH_AND_COMBOP(OP,OP0,OP1,N,T) \
+	.global	__sync_fetch_and_##OP##_##N; \
+	HIDDEN_FUNC(__sync_fetch_and_##OP##_##N); \
+	.align	2; \
+__sync_fetch_and_##OP##_##N:; \
+	mova	1f, r0; \
+	nop; \
+	mov	r15, r1; \
+	mov	#(0f-1f), r15; \
+0:	mov.##T	@r4, r2; \
+	OP0	r2, r5; \
+	OP1	r5, r5; \
+	mov.##T	r5, @r4; \
+1:	mov	r1, r15; \
+	rts; \
+	 mov	r2, r0; \
+	ENDFUNC(__sync_fetch_and_##OP##_##N)
+
+ATOMIC_FETCH_AND_COMBOP(sub,sub,neg,1,b)
+ATOMIC_FETCH_AND_COMBOP(sub,sub,neg,2,w)
+ATOMIC_FETCH_AND_COMBOP(sub,sub,neg,4,l)
+
+ATOMIC_FETCH_AND_COMBOP(nand,and,not,1,b)
+ATOMIC_FETCH_AND_COMBOP(nand,and,not,2,w)
+ATOMIC_FETCH_AND_COMBOP(nand,and,not,4,l)
+
+#endif /* ! __SH5__ */
diff --git a/gcc/config/sh/t-linux b/gcc/config/sh/t-linux
index 698882f..8679bb5 100644
--- a/gcc/config/sh/t-linux
+++ b/gcc/config/sh/t-linux
@@ -1,7 +1,7 @@
 TARGET_LIBGCC2_CFLAGS = -fpic -DNO_FPSCR_VALUES
 LIB1ASMFUNCS_CACHE = _ic_invalidate _ic_invalidate_array
 
-LIB2FUNCS_EXTRA=
+LIB2FUNCS_EXTRA= $(srcdir)/config/sh/linux-atomic.asm
 
 MULTILIB_DIRNAMES= 
 MULTILIB_MATCHES =