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authorKees Cook <keescook@chromium.org>2016-10-31 10:40:13 -0700
committerKees Cook <keescook@chromium.org>2016-10-31 10:40:13 -0700
commitda7389ac6c83e7aa8b04ebe5ba546df2a7873c5c (patch)
tree564b1c302c5bca487aafcaacc70baa049f12b8b2
parent07d9a380680d1c0eb51ef87ff2eab5c994949e69 (diff)
downloadlinux-da7389ac6c83e7aa8b04ebe5ba546df2a7873c5c.tar.bz2
gcc-plugins: Export symbols needed by gcc
This explicitly exports symbols that gcc expects from plugins. Based on code from Emese Revfy. Signed-off-by: Kees Cook <keescook@chromium.org>
-rw-r--r--scripts/gcc-plugins/cyc_complexity_plugin.c4
-rw-r--r--scripts/gcc-plugins/gcc-common.h1
-rw-r--r--scripts/gcc-plugins/latent_entropy_plugin.c6
-rw-r--r--scripts/gcc-plugins/sancov_plugin.c4
4 files changed, 8 insertions, 7 deletions
diff --git a/scripts/gcc-plugins/cyc_complexity_plugin.c b/scripts/gcc-plugins/cyc_complexity_plugin.c
index 34df974c6ba3..8af7db06122d 100644
--- a/scripts/gcc-plugins/cyc_complexity_plugin.c
+++ b/scripts/gcc-plugins/cyc_complexity_plugin.c
@@ -20,7 +20,7 @@
#include "gcc-common.h"
-int plugin_is_GPL_compatible;
+__visible int plugin_is_GPL_compatible;
static struct plugin_info cyc_complexity_plugin_info = {
.version = "20160225",
@@ -49,7 +49,7 @@ static unsigned int cyc_complexity_execute(void)
#include "gcc-generate-gimple-pass.h"
-int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version)
+__visible int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version)
{
const char * const plugin_name = plugin_info->base_name;
struct register_pass_info cyc_complexity_pass_info;
diff --git a/scripts/gcc-plugins/gcc-common.h b/scripts/gcc-plugins/gcc-common.h
index 172850bcd0d9..950fd2e64bb7 100644
--- a/scripts/gcc-plugins/gcc-common.h
+++ b/scripts/gcc-plugins/gcc-common.h
@@ -130,6 +130,7 @@ extern void dump_gimple_stmt(pretty_printer *, gimple, int, int);
#endif
#define __unused __attribute__((__unused__))
+#define __visible __attribute__((visibility("default")))
#define DECL_NAME_POINTER(node) IDENTIFIER_POINTER(DECL_NAME(node))
#define DECL_NAME_LENGTH(node) IDENTIFIER_LENGTH(DECL_NAME(node))
diff --git a/scripts/gcc-plugins/latent_entropy_plugin.c b/scripts/gcc-plugins/latent_entropy_plugin.c
index ff1939b804ae..9d3d4adf3be8 100644
--- a/scripts/gcc-plugins/latent_entropy_plugin.c
+++ b/scripts/gcc-plugins/latent_entropy_plugin.c
@@ -77,7 +77,7 @@
#include "gcc-common.h"
-int plugin_is_GPL_compatible;
+__visible int plugin_is_GPL_compatible;
static GTY(()) tree latent_entropy_decl;
@@ -584,8 +584,8 @@ static void latent_entropy_start_unit(void *gcc_data __unused,
| TODO_update_ssa
#include "gcc-generate-gimple-pass.h"
-int plugin_init(struct plugin_name_args *plugin_info,
- struct plugin_gcc_version *version)
+__visible int plugin_init(struct plugin_name_args *plugin_info,
+ struct plugin_gcc_version *version)
{
bool enabled = true;
const char * const plugin_name = plugin_info->base_name;
diff --git a/scripts/gcc-plugins/sancov_plugin.c b/scripts/gcc-plugins/sancov_plugin.c
index aedd6113cb73..7ea0b3f50739 100644
--- a/scripts/gcc-plugins/sancov_plugin.c
+++ b/scripts/gcc-plugins/sancov_plugin.c
@@ -21,7 +21,7 @@
#include "gcc-common.h"
-int plugin_is_GPL_compatible;
+__visible int plugin_is_GPL_compatible;
tree sancov_fndecl;
@@ -86,7 +86,7 @@ static void sancov_start_unit(void __unused *gcc_data, void __unused *user_data)
#endif
}
-int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version)
+__visible int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version)
{
int i;
struct register_pass_info sancov_plugin_pass_info;