diff options
Diffstat (limited to 'erts/emulator/beam/sys.h')
| -rw-r--r-- | erts/emulator/beam/sys.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h index 869a575cb4..c261c8e117 100644 --- a/erts/emulator/beam/sys.h +++ b/erts/emulator/beam/sys.h @@ -63,6 +63,14 @@ # endif #endif +#ifndef ERTS_NOINLINE +# if ERTS_AT_LEAST_GCC_VSN__(3,1,1) +# define ERTS_NOINLINE __attribute__((__noinline__)) +# else +# define ERTS_NOINLINE +# endif +#endif + #if defined(DEBUG) || defined(ERTS_ENABLE_LOCK_CHECK) # undef ERTS_CAN_INLINE # define ERTS_CAN_INLINE 0 @@ -111,6 +119,23 @@ #endif #endif +/* + * Test for clang's convenient __has_builtin feature checking macro. + */ +#ifndef __has_builtin + #define __has_builtin(x) 0 +#endif + +/* + * Define HAVE_OVERFLOW_CHECK_BUILTINS if the overflow checking arithmetic + * builtins are available. + */ +#if ERTS_AT_LEAST_GCC_VSN__(5, 1, 0) +# define HAVE_OVERFLOW_CHECK_BUILTINS 1 +#elif __has_builtin(__builtin_mul_overflow) +# define HAVE_OVERFLOW_CHECK_BUILTINS 1 +#endif + #include "erl_misc_utils.h" /* @@ -1291,4 +1316,13 @@ erts_raw_env_next_char(byte *p, int encoding) #endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */ +/* + * Magic numbers for our driver port_control callbacks. + * Kept them below 1<<27 to not inflict extra bignum garbage on 32-bit. + */ +#define ERTS_TTYSL_DRV_CONTROL_MAGIC_NUMBER 0x018b0900U +#define ERTS_INET_DRV_CONTROL_MAGIC_NUMBER 0x03f1a300U +#define ERTS_SPAWN_DRV_CONTROL_MAGIC_NUMBER 0x04c76a00U +#define ERTS_FORKER_DRV_CONTROL_MAGIC_NUMBER 0x050a7800U + #endif |