diff options
Diffstat (limited to 'gcc/c-cppbuiltin.c')
| -rw-r--r-- | gcc/c-cppbuiltin.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/gcc/c-cppbuiltin.c b/gcc/c-cppbuiltin.c index 544050a..1b52da0 100644 --- a/gcc/c-cppbuiltin.c +++ b/gcc/c-cppbuiltin.c @@ -547,6 +547,33 @@ c_cpp_builtins (cpp_reader *pfile) if (c_dialect_cxx () && TYPE_UNSIGNED (wchar_type_node)) cpp_define (pfile, "__WCHAR_UNSIGNED__"); + /* Tell source code if the compiler makes sync_compare_and_swap + builtins available. */ +#ifdef HAVE_sync_compare_and_swapqi + if (HAVE_sync_compare_and_swapqi) + cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1"); +#endif + +#ifdef HAVE_sync_compare_and_swaphi + if (HAVE_sync_compare_and_swaphi) + cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2"); +#endif + +#ifdef HAVE_sync_compare_and_swapsi + if (HAVE_sync_compare_and_swapsi) + cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4"); +#endif + +#ifdef HAVE_sync_compare_and_swapdi + if (HAVE_sync_compare_and_swapdi) + cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8"); +#endif + +#ifdef HAVE_sync_compare_and_swapti + if (HAVE_sync_compare_and_swapti) + cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16"); +#endif + /* Make the choice of ObjC runtime visible to source code. */ if (c_dialect_objc () && flag_next_runtime) cpp_define (pfile, "__NEXT_RUNTIME__"); |