diff options
Diffstat (limited to 'gcc/c-cppbuiltin.c')
| -rw-r--r-- | gcc/c-cppbuiltin.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/gcc/c-cppbuiltin.c b/gcc/c-cppbuiltin.c index 3f0f688861d..f6a1805f0b8 100644 --- a/gcc/c-cppbuiltin.c +++ b/gcc/c-cppbuiltin.c @@ -54,6 +54,7 @@ static void builtin_define_with_int_value (const char *, HOST_WIDE_INT); static void builtin_define_with_hex_fp_value (const char *, tree, int, const char *, const char *); +static void builtin_define_stdint_macros (void); static void builtin_define_type_max (const char *, tree, int); static void builtin_define_type_precision (const char *, tree); static void builtin_define_float_constants (const char *, const char *, @@ -293,6 +294,23 @@ define__GNUC__ (void) abort (); } +/* Define macros used by <stdint.h>. Currently only defines limits + for intmax_t, used by the testsuite. */ +static void +builtin_define_stdint_macros (void) +{ + int intmax_long; + if (intmax_type_node == long_long_integer_type_node) + intmax_long = 2; + else if (intmax_type_node == long_integer_type_node) + intmax_long = 1; + else if (intmax_type_node == integer_type_node) + intmax_long = 0; + else + abort (); + builtin_define_type_max ("__INTMAX_MAX__", intmax_type_node, intmax_long); +} + /* Hook that registers front end and target-specific built-ins. */ void c_cpp_builtins (cpp_reader *pfile) @@ -354,6 +372,9 @@ c_cpp_builtins (cpp_reader *pfile) builtin_define_type_precision ("__CHAR_BIT__", char_type_node); + /* stdint.h (eventually) and the testsuite need to know these. */ + builtin_define_stdint_macros (); + /* float.h needs to know these. */ builtin_define_with_int_value ("__FLT_EVAL_METHOD__", @@ -426,6 +447,15 @@ c_cpp_builtins (cpp_reader *pfile) TARGET_CPU_CPP_BUILTINS (); TARGET_OS_CPP_BUILTINS (); TARGET_OBJFMT_CPP_BUILTINS (); + + /* Support the __declspec keyword by turning them into attributes. + Note that the current way we do this may result in a collision + with predefined attributes later on. This can be solved by using + one attribute, say __declspec__, and passing args to it. The + problem with that approach is that args are not accumulated: each + new appearance would clobber any existing args. */ + if (TARGET_DECLSPEC) + builtin_define ("__declspec(x)=__attribute__((x))"); } /* Pass an object-like macro. If it doesn't lie in the user's |