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| author | Charles Davis <cdavis5x@gmail.com> | 2018-08-31 18:11:48 +0000 |
|---|---|---|
| committer | Charles Davis <cdavis5x@gmail.com> | 2018-08-31 18:11:48 +0000 |
| commit | 5208bea2c37b7c4881a8ff5ab149c86bee39cea0 (patch) | |
| tree | 2079c5c739fa4ebbaa219a51fe36d719f9d8aa99 /libunwind | |
| parent | fa483b413925341f99f251c8482716785226d36b (diff) | |
Export public functions implemented in assembly on Windows.
Summary:
By default, symbols aren't visible outside of the module that defines
them. To make them visible, they must be exported. The easiest way to do
that is to embed an `-export:symname` directive into the object file.
Reviewers: mstorsjo, rnk
Subscribers: christof, cfe-commits
Differential Revision: https://reviews.llvm.org/D51508
Diffstat (limited to 'libunwind')
| -rw-r--r-- | libunwind/src/assembly.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libunwind/src/assembly.h b/libunwind/src/assembly.h index 07b08f94bd8..e98ad40f14f 100644 --- a/libunwind/src/assembly.h +++ b/libunwind/src/assembly.h @@ -44,6 +44,7 @@ #if defined(__APPLE__) #define SYMBOL_IS_FUNC(name) +#define EXPORT_SYMBOL(name) #define HIDDEN_SYMBOL(name) .private_extern name #define NO_EXEC_STACK_DIRECTIVE @@ -54,6 +55,7 @@ #else #define SYMBOL_IS_FUNC(name) .type name,@function #endif +#define EXPORT_SYMBOL(name) #define HIDDEN_SYMBOL(name) .hidden name #if defined(__GNU__) || defined(__FreeBSD__) || defined(__Fuchsia__) || \ @@ -70,6 +72,11 @@ .scl 2 SEPARATOR \ .type 32 SEPARATOR \ .endef +#define EXPORT_SYMBOL2(name) \ + .section .drectve,"yn" SEPARATOR \ + .ascii "-export:", #name, "\0" SEPARATOR \ + .text +#define EXPORT_SYMBOL(name) EXPORT_SYMBOL2(name) #define HIDDEN_SYMBOL(name) #define NO_EXEC_STACK_DIRECTIVE @@ -82,6 +89,7 @@ #define DEFINE_LIBUNWIND_FUNCTION(name) \ .globl SYMBOL_NAME(name) SEPARATOR \ + EXPORT_SYMBOL(name) SEPARATOR \ SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \ SYMBOL_NAME(name): |