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* [glibc/fw/unwind-link] __frame_state_for: Use <unwind-link.h> for unwinder access
@ 2020-02-13 10:46 Florian Weimer
0 siblings, 0 replies; 2+ messages in thread
From: Florian Weimer @ 2020-02-13 10:46 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cc2ab2b164ee6615bb82660f3ff9369bacce783f
commit cc2ab2b164ee6615bb82660f3ff9369bacce783f
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Feb 12 17:31:06 2020 +0100
__frame_state_for: Use <unwind-link.h> for unwinder access
Diff:
---
sysdeps/generic/framestate.c | 21 ++++++++-------------
1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/sysdeps/generic/framestate.c b/sysdeps/generic/framestate.c
index e342ce8..83cfcd2 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);
}
^ permalink raw reply [flat|nested] 2+ messages in thread
* [glibc/fw/unwind-link] __frame_state_for: Use <unwind-link.h> for unwinder access
@ 2020-02-13 16:22 Florian Weimer
0 siblings, 0 replies; 2+ messages in thread
From: Florian Weimer @ 2020-02-13 16:22 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3cd557dd662c5ed0ead06fdbe54d5e0f5b799eee
commit 3cd557dd662c5ed0ead06fdbe54d5e0f5b799eee
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Feb 12 17:31:06 2020 +0100
__frame_state_for: Use <unwind-link.h> for unwinder access
Diff:
---
sysdeps/generic/framestate.c | 21 ++++++++-------------
1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/sysdeps/generic/framestate.c b/sysdeps/generic/framestate.c
index e342ce8..83cfcd2 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);
}
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-02-13 10:46 [glibc/fw/unwind-link] __frame_state_for: Use <unwind-link.h> for unwinder access Florian Weimer
2020-02-13 16:22 Florian Weimer
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