[08/11] __frame_state_for: Use <unwind-link.h> for unwinder access
diff mbox series

Message ID 2517bf664b69611181ac85d1ce810c9012afb497.1581613260.git.fweimer@redhat.com
State New
Headers show
Series
  • Unify dynamic loading of the libgcc_s unwinder
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Commit Message

Florian Weimer Feb. 13, 2020, 5:08 p.m. UTC
---
 sysdeps/generic/framestate.c | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

Patch
diff mbox series

diff --git a/sysdeps/generic/framestate.c b/sysdeps/generic/framestate.c
index e342ce8e54..83cfcd20fd 100644
--- a/sysdeps/generic/framestate.c
+++ b/sysdeps/generic/framestate.c
@@ -17,7 +17,6 @@ 
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <dlfcn.h>
 #include <stdlib.h>
 #define STATIC static
 #define __frame_state_for fallback_frame_state_for
@@ -25,6 +24,8 @@ 
 #undef __frame_state_for
 #include <gnu/lib-names.h>
 
+#include <unwind-link.h>
+
 typedef struct frame_state * (*framesf)(void *pc, struct frame_state *);
 struct frame_state *__frame_state_for (void *pc,
 				       struct frame_state *frame_state);
@@ -32,21 +33,15 @@  struct frame_state *__frame_state_for (void *pc,
 struct frame_state *
 __frame_state_for (void *pc, struct frame_state *frame_state)
 {
-  static framesf frame_state_for;
-
-  if (frame_state_for == NULL)
+  struct unwind_link *unwind_link = __libc_unwind_link_get ();
+  if (unwind_link != NULL)
+    return UNWIND_LINK_PTR (unwind_link, __frame_state_for) (pc, frame_state);
+  else
     {
-      void *handle = __libc_dlopen (LIBGCC_S_SO);
-
-      if (handle == NULL
-	  || (frame_state_for
-	      = (framesf) __libc_dlsym (handle, "__frame_state_for")) == NULL)
 #ifndef __USING_SJLJ_EXCEPTIONS__
-	frame_state_for = fallback_frame_state_for;
+      return fallback_frame_state_for (pc, frame_state);
 #else
-	frame_state_for = abort;
+      abort ();
 #endif
     }
-
-  return frame_state_for (pc, frame_state);
 }