diff options
| author | bernard.xiong <[email protected]> | 2011-05-09 02:50:01 +0000 |
|---|---|---|
| committer | bernard.xiong <[email protected]> | 2011-05-09 02:50:01 +0000 |
| commit | 43a6a907da0ee6047030ecb737109642dcdc1c5c (patch) | |
| tree | 9ae7d793cbc31a4c97e4744ac471f8a930afb899 | |
| parent | 8e5f4287777d2dc1aad05e0db908ffaff22bec9d (diff) | |
use builtin va_arg in GCC 4.x
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1400 bbd45198-f89e-11dd-88c7-29a3b14d5316
| -rw-r--r-- | include/rtdef.h | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/include/rtdef.h b/include/rtdef.h index df2a7894b7..880d966fcf 100644 --- a/include/rtdef.h +++ b/include/rtdef.h @@ -13,6 +13,7 @@ * 2008-07-12 Bernard remove all rt_int8, rt_uint32_t etc typedef * 2010-10-26 yi.qiu add module support * 2010-11-10 Bernard add cleanup callback function in thread exit. + * 2011-05-09 Bernard use builtin va_arg in GCC 4.x */ #ifndef __RT_DEF_H__ #define __RT_DEF_H__ @@ -97,17 +98,25 @@ typedef rt_uint32_t rt_off_t; /**< Type for offset */ #ifdef RT_USING_NEWLIB #include <stdarg.h> #else - typedef void *__sys_va_list; - typedef __sys_va_list va_list; - #define __va_rounded_size(type) \ - (((sizeof (type) + sizeof (int) - 1) / sizeof (int)) * sizeof (int)) - #define va_start(ap, lastarg) \ - (ap = ((char *) &(lastarg) + __va_rounded_size(lastarg))) - #define va_end(ap) ((void)0) - /* little endian */ - #define va_arg(ap, type) \ - (ap = (__sys_va_list) ((char *) (ap) + __va_rounded_size (type)), \ - *((type *) (void *) ((char *) (ap) - __va_rounded_size (type)))) + #if __GNUC__ < 4 + typedef void *__sys_va_list; + typedef __sys_va_list va_list; + #define __va_rounded_size(type) \ + (((sizeof (type) + sizeof (int) - 1) / sizeof (int)) * sizeof (int)) + #define va_start(ap, lastarg) \ + (ap = ((char *) &(lastarg) + __va_rounded_size(lastarg))) + #define va_end(ap) ((void)0) + /* little endian */ + #define va_arg(ap, type) \ + (ap = (__sys_va_list) ((char *) (ap) + __va_rounded_size (type)), \ + *((type *) (void *) ((char *) (ap) - __va_rounded_size (type)))) + #else + typedef __builtin_va_list __gnuc_va_list; + typedef __gnuc_va_list va_list; + #define va_start(v,l) __builtin_va_start(v,l) + #define va_end(v) __builtin_va_end(v) + #define va_arg(v,l) __builtin_va_arg(v,l) + #endif #endif #define SECTION(x) __attribute__((section(x))) |