diff options
Diffstat (limited to 'libunwind/src/config.h')
| -rw-r--r-- | libunwind/src/config.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/libunwind/src/config.h b/libunwind/src/config.h index c2fff5051bc..dbc52d0b695 100644 --- a/libunwind/src/config.h +++ b/libunwind/src/config.h @@ -62,6 +62,36 @@ #endif #endif +#define STR(a) #a +#define XSTR(a) STR(a) +#define SYMBOL_NAME(name) XSTR(__USER_LABEL_PREFIX__) #name + +#if defined(__APPLE__) +#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \ + __asm__(".globl " SYMBOL_NAME(aliasname)); \ + __asm__(SYMBOL_NAME(aliasname) " = " SYMBOL_NAME(name)); \ + _LIBUNWIND_EXPORT \ + extern "C" __typeof(name) aliasname __attribute__((weak_import)); +#elif defined(__ELF__) +#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \ + _LIBUNWIND_EXPORT \ + extern "C" __typeof(name) aliasname __attribute__((weak, alias(#name))); +#elif defined(_WIN32) +#if defined(__MINGW32__) +#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \ + _LIBUNWIND_EXPORT \ + extern "C" __typeof(name) aliasname __attribute__((alias(#name))); +#else +#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \ + __pragma(comment(linker, "/alternatename:" SYMBOL_NAME(aliasname) "=" \ + SYMBOL_NAME(name))) \ + _LIBUNWIND_EXPORT \ + extern "C" __typeof(name) aliasname; +#endif +#else +#error Unsupported target +#endif + #if (defined(__APPLE__) && defined(__arm__)) || defined(__USING_SJLJ_EXCEPTIONS__) #define _LIBUNWIND_BUILD_SJLJ_APIS #endif |
