diff options
Diffstat (limited to 'gcc-4.9/libgcc/config/sh/linux-atomic.c')
-rw-r--r-- | gcc-4.9/libgcc/config/sh/linux-atomic.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/sh/linux-atomic.c b/gcc-4.9/libgcc/config/sh/linux-atomic.c new file mode 100644 index 000000000..1ef02eaa6 --- /dev/null +++ b/gcc-4.9/libgcc/config/sh/linux-atomic.c @@ -0,0 +1,81 @@ +/* Copyright (C) 2012-2014 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/>. */ + +/* Atomic built-in C functions for link compatibility with older code that + was compiled to emit function calls for atomic built-ins. + Notice that if no atomic model has been selected the functions in this + file must not be generated, or else they will result in infinite no-op + loops. + Notice also, that all the generated functions below take three parameters, + which is not actually true for some of the built-in functions. However, + on SH this does not matter, since the first four parameters are always + passed in call clobbered registers. + The return type for the sync_bool_compare_and_swap functions is also + actually supposed to be a bool, but this also doesn't matter since any + int return type <= 32 bit is returned in R0 on SH. */ + +#if !__SH_ATOMIC_MODEL_NONE__ + +typedef unsigned char uint8_t; +typedef unsigned short uint16_t; +typedef unsigned int uint32_t; + +#define uint8_t_sz 1 +#define uint16_t_sz 2 +#define uint32_t_sz 4 + +#define typesz(x) x##_sz + +#define concat(x,y) __ ## x ## _ ## y +#define eval(x,y) concat (x,y) +#define genname(f,t) eval(f, typesz (t)) + +#define func1(name, type) \ + type __attribute__((visibility("hidden"))) \ + genname (name, type) (type* x, type y, type z) \ + { \ + return __##name (x, y, z); \ + } + +#define genfuncs(name) \ + func1 (name, uint8_t) \ + func1 (name, uint16_t) \ + func1 (name, uint32_t) + +genfuncs (sync_lock_test_and_set) +genfuncs (sync_val_compare_and_swap) +genfuncs (sync_bool_compare_and_swap) +genfuncs (sync_fetch_and_add) +genfuncs (sync_fetch_and_or) +genfuncs (sync_fetch_and_and) +genfuncs (sync_fetch_and_xor) +genfuncs (sync_fetch_and_sub) +genfuncs (sync_fetch_and_nand) +genfuncs (sync_add_and_fetch) +genfuncs (sync_or_and_fetch) +genfuncs (sync_and_and_fetch) +genfuncs (sync_xor_and_fetch) +genfuncs (sync_sub_and_fetch) +genfuncs (sync_nand_and_fetch) + +#endif |