| /* Copyright (C) 2006, 2008, 2009 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 3, 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. |
| |
| 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/>. */ |
| |
| |
| !! 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,EXT) \ |
| .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; \ |
| EXT r2, r0; \ |
| ENDFUNC(__sync_lock_test_and_set_##N) |
| |
| ATOMIC_TEST_AND_SET (1,b,extu.b) |
| ATOMIC_TEST_AND_SET (2,w,extu.w) |
| ATOMIC_TEST_AND_SET (4,l,mov) |
| |
| #define ATOMIC_COMPARE_AND_SWAP(N,T,EXTS,EXT) \ |
| .global __sync_val_compare_and_swap_##N; \ |
| HIDDEN_FUNC(__sync_val_compare_and_swap_##N); \ |
| .align 2; \ |
| __sync_val_compare_and_swap_##N:; \ |
| mova 1f, r0; \ |
| EXTS r5, r5; \ |
| 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; \ |
| EXT r2, r0; \ |
| ENDFUNC(__sync_val_compare_and_swap_##N) |
| |
| ATOMIC_COMPARE_AND_SWAP (1,b,exts.b,extu.b) |
| ATOMIC_COMPARE_AND_SWAP (2,w,exts.w,extu.w) |
| ATOMIC_COMPARE_AND_SWAP (4,l,mov,mov) |
| |
| #define ATOMIC_BOOL_COMPARE_AND_SWAP(N,T,EXTS) \ |
| .global __sync_bool_compare_and_swap_##N; \ |
| HIDDEN_FUNC(__sync_bool_compare_and_swap_##N); \ |
| .align 2; \ |
| __sync_bool_compare_and_swap_##N:; \ |
| mova 1f, r0; \ |
| EXTS r5, r5; \ |
| 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; \ |
| movt r0; \ |
| ENDFUNC(__sync_bool_compare_and_swap_##N) |
| |
| ATOMIC_BOOL_COMPARE_AND_SWAP (1,b,exts.b) |
| ATOMIC_BOOL_COMPARE_AND_SWAP (2,w,exts.w) |
| ATOMIC_BOOL_COMPARE_AND_SWAP (4,l,mov) |
| |
| #define ATOMIC_FETCH_AND_OP(OP,N,T,EXT) \ |
| .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; \ |
| mov r5, r3; \ |
| OP r2, r3; \ |
| mov.##T r3, @r4; \ |
| 1: mov r1, r15; \ |
| rts; \ |
| EXT r2, r0; \ |
| ENDFUNC(__sync_fetch_and_##OP##_##N) |
| |
| ATOMIC_FETCH_AND_OP(add,1,b,extu.b) |
| ATOMIC_FETCH_AND_OP(add,2,w,extu.w) |
| ATOMIC_FETCH_AND_OP(add,4,l,mov) |
| |
| ATOMIC_FETCH_AND_OP(or,1,b,extu.b) |
| ATOMIC_FETCH_AND_OP(or,2,w,extu.w) |
| ATOMIC_FETCH_AND_OP(or,4,l,mov) |
| |
| ATOMIC_FETCH_AND_OP(and,1,b,extu.b) |
| ATOMIC_FETCH_AND_OP(and,2,w,extu.w) |
| ATOMIC_FETCH_AND_OP(and,4,l,mov) |
| |
| ATOMIC_FETCH_AND_OP(xor,1,b,extu.b) |
| ATOMIC_FETCH_AND_OP(xor,2,w,extu.w) |
| ATOMIC_FETCH_AND_OP(xor,4,l,mov) |
| |
| #define ATOMIC_FETCH_AND_COMBOP(OP,OP0,OP1,N,T,EXT) \ |
| .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; \ |
| mov r5, r3; \ |
| OP0 r2, r3; \ |
| OP1 r3, r3; \ |
| mov.##T r3, @r4; \ |
| 1: mov r1, r15; \ |
| rts; \ |
| EXT r2, r0; \ |
| ENDFUNC(__sync_fetch_and_##OP##_##N) |
| |
| ATOMIC_FETCH_AND_COMBOP(sub,sub,neg,1,b,extu.b) |
| ATOMIC_FETCH_AND_COMBOP(sub,sub,neg,2,w,extu.w) |
| ATOMIC_FETCH_AND_COMBOP(sub,sub,neg,4,l,mov) |
| |
| ATOMIC_FETCH_AND_COMBOP(nand,and,not,1,b,extu.b) |
| ATOMIC_FETCH_AND_COMBOP(nand,and,not,2,w,extu.w) |
| ATOMIC_FETCH_AND_COMBOP(nand,and,not,4,l,mov) |
| |
| #define ATOMIC_OP_AND_FETCH(OP,N,T,EXT) \ |
| .global __sync_##OP##_and_fetch_##N; \ |
| HIDDEN_FUNC(__sync_##OP##_and_fetch_##N); \ |
| .align 2; \ |
| __sync_##OP##_and_fetch_##N:; \ |
| mova 1f, r0; \ |
| nop; \ |
| mov r15, r1; \ |
| mov #(0f-1f), r15; \ |
| 0: mov.##T @r4, r2; \ |
| mov r5, r3; \ |
| OP r2, r3; \ |
| mov.##T r3, @r4; \ |
| 1: mov r1, r15; \ |
| rts; \ |
| EXT r3, r0; \ |
| ENDFUNC(__sync_##OP##_and_fetch_##N) |
| |
| ATOMIC_OP_AND_FETCH(add,1,b,extu.b) |
| ATOMIC_OP_AND_FETCH(add,2,w,extu.w) |
| ATOMIC_OP_AND_FETCH(add,4,l,mov) |
| |
| ATOMIC_OP_AND_FETCH(or,1,b,extu.b) |
| ATOMIC_OP_AND_FETCH(or,2,w,extu.w) |
| ATOMIC_OP_AND_FETCH(or,4,l,mov) |
| |
| ATOMIC_OP_AND_FETCH(and,1,b,extu.b) |
| ATOMIC_OP_AND_FETCH(and,2,w,extu.w) |
| ATOMIC_OP_AND_FETCH(and,4,l,mov) |
| |
| ATOMIC_OP_AND_FETCH(xor,1,b,extu.b) |
| ATOMIC_OP_AND_FETCH(xor,2,w,extu.w) |
| ATOMIC_OP_AND_FETCH(xor,4,l,mov) |
| |
| #define ATOMIC_COMBOP_AND_FETCH(OP,OP0,OP1,N,T,EXT) \ |
| .global __sync_##OP##_and_fetch_##N; \ |
| HIDDEN_FUNC(__sync_##OP##_and_fetch_##N); \ |
| .align 2; \ |
| __sync_##OP##_and_fetch_##N:; \ |
| mova 1f, r0; \ |
| mov r15, r1; \ |
| mov #(0f-1f), r15; \ |
| 0: mov.##T @r4, r2; \ |
| mov r5, r3; \ |
| OP0 r2, r3; \ |
| OP1 r3, r3; \ |
| mov.##T r3, @r4; \ |
| 1: mov r1, r15; \ |
| rts; \ |
| EXT r3, r0; \ |
| ENDFUNC(__sync_##OP##_and_fetch_##N) |
| |
| ATOMIC_COMBOP_AND_FETCH(sub,sub,neg,1,b,extu.b) |
| ATOMIC_COMBOP_AND_FETCH(sub,sub,neg,2,w,extu.w) |
| ATOMIC_COMBOP_AND_FETCH(sub,sub,neg,4,l,mov) |
| |
| ATOMIC_COMBOP_AND_FETCH(nand,and,not,1,b,extu.b) |
| ATOMIC_COMBOP_AND_FETCH(nand,and,not,2,w,extu.w) |
| ATOMIC_COMBOP_AND_FETCH(nand,and,not,4,l,mov) |
| |
| .section .note.GNU-stack,"",%progbits |
| .previous |
| |
| #endif /* ! __SH5__ */ |