From: kkojima Date: Fri, 31 Mar 2006 22:31:05 +0000 (+0000) Subject: * config/sh/linux-atomic.asm: New file. X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=commitdiff_plain;h=76915e72e3e7baba4f0d3708e5c05bad66c2882e * config/sh/linux-atomic.asm: New file. * config/sh/t-linux (LIB2FUNCS_EXTRA): Add linux-atomic.asm. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@112593 138bc75d-0d04-0410-961f-82ee72b054a4 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d11b14c2979..d76e2c10689 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2006-03-31 Kaz Kojima + + * config/sh/linux-atomic.asm: New file. + * config/sh/t-linux (LIB2FUNCS_EXTRA): Add linux-atomic.asm. + 2006-03-31 DJ Delorie * 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 00000000000..d181fb3fad5 --- /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 698882fe92e..8679bb52946 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 =