diff options
| author | Martin Storsjo <martin@martin.st> | 2018-09-25 19:50:39 +0000 |
|---|---|---|
| committer | Martin Storsjo <martin@martin.st> | 2018-09-25 19:50:39 +0000 |
| commit | 47a959c926d5170ccd6c4fd953da6929099b58c5 (patch) | |
| tree | e11bd4c7e78fbbc3e06ac27d90d7144fd7624cb2 /lib | |
| parent | a9d51f10a4e9568d0a281fbf6f0b271b53846e04 (diff) | |
| download | compiler-rt-47a959c926d5170ccd6c4fd953da6929099b58c5.tar.gz | |
[Sanitizers] [MinGW] Produce undecorated symbols for /export: directives when in MinGW mode
In MinGW mode, the /export: directives in object files are interpreted
differently; the symbols are not assumed to be decorated.
Since the GNU linker doesn't support the /alternatename and /include
directives, there's no such distinction for them in lld. This assumes
that the resulting sanitizer libraries will be linked by lld.
Differential Revision: https://reviews.llvm.org/D51882
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@343015 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/sanitizer_common/sanitizer_win_defs.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/lib/sanitizer_common/sanitizer_win_defs.h b/lib/sanitizer_common/sanitizer_win_defs.h index 19596cf9c..126263036 100644 --- a/lib/sanitizer_common/sanitizer_win_defs.h +++ b/lib/sanitizer_common/sanitizer_win_defs.h @@ -30,6 +30,16 @@ #define WIN_SYM_PREFIX #endif +// For MinGW, the /export: directives contain undecorated symbols, contrary to +// link/lld-link. The GNU linker doesn't support /alternatename and /include +// though, thus lld-link in MinGW mode interprets them in the same way as +// in the default mode. +#ifdef __MINGW32__ +#define WIN_EXPORT_PREFIX +#else +#define WIN_EXPORT_PREFIX WIN_SYM_PREFIX +#endif + // Intermediate macro to ensure the parameter is expanded before stringified. #define STRINGIFY_(A) #A #define STRINGIFY(A) STRINGIFY_(A) @@ -62,8 +72,8 @@ __pragma(comment(linker, "/include:" WIN_SYM_PREFIX STRINGIFY(Name))) #define WIN_EXPORT(ExportedName, Name) \ - __pragma(comment(linker, "/export:" WIN_SYM_PREFIX STRINGIFY(ExportedName) \ - "=" WIN_SYM_PREFIX STRINGIFY(Name))) + __pragma(comment(linker, "/export:" WIN_EXPORT_PREFIX STRINGIFY(ExportedName) \ + "=" WIN_EXPORT_PREFIX STRINGIFY(Name))) // We cannot define weak functions on Windows, but we can use WIN_WEAK_ALIAS() // which defines an alias to a default implementation, and only works when |