diff options
Diffstat (limited to 'src/config.h')
| -rw-r--r-- | src/config.h | 36 |
1 files changed, 32 insertions, 4 deletions
diff --git a/src/config.h b/src/config.h index fc7fd646707e9..09bb261647ca5 100644 --- a/src/config.h +++ b/src/config.h @@ -1,9 +1,8 @@ //===----------------------------- config.h -------------------------------===// // -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // // // Defines macros used within libunwind project. @@ -63,6 +62,35 @@ #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)); \ + extern "C" _LIBUNWIND_EXPORT __typeof(name) aliasname \ + __attribute__((weak_import)); +#elif defined(__ELF__) +#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \ + extern "C" _LIBUNWIND_EXPORT __typeof(name) aliasname \ + __attribute__((weak, alias(#name))); +#elif defined(_WIN32) +#if defined(__MINGW32__) +#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \ + extern "C" _LIBUNWIND_EXPORT __typeof(name) aliasname \ + __attribute__((alias(#name))); +#else +#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \ + __pragma(comment(linker, "/alternatename:" SYMBOL_NAME(aliasname) "=" \ + SYMBOL_NAME(name))) \ + extern "C" _LIBUNWIND_EXPORT __typeof(name) aliasname; +#endif +#else +#error Unsupported target +#endif + #if (defined(__APPLE__) && defined(__arm__)) || defined(__USING_SJLJ_EXCEPTIONS__) #define _LIBUNWIND_BUILD_SJLJ_APIS #endif |