From: Serhei Makarov <serhei@serhei.io>
Date: Thu, 27 Feb 2025 19:38:55 +0000 (-0500)
Subject: libdwfl: add dwfl_thread_ebl
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=refs%2Fheads%2Fusers%2Fserhei%2Feu-stacktrace.v1;p=thirdparty%2Felfutils.git

libdwfl: add dwfl_thread_ebl

Exposing the Ebl * here allows libdwfl users to access the
ebl_set_initial_regs_sample callback for a given process.

* libdw/libdw.map: Add dwfl_thread_ebl.
* libdwfl/dwfl_frame.c (dwfl_thread_ebl): New function.
* libdwfl/dwfl_frame.c (dwfl_thread_ebl): New function.
---

diff --git a/libdw/libdw.map b/libdw/libdw.map
index ce990a09..a8241a29 100644
--- a/libdw/libdw.map
+++ b/libdw/libdw.map
@@ -393,4 +393,5 @@ ELFUTILS_0.193 {
     dwfl_process_tracker_end;
     dwfl_process_tracker_find_elf;
     dwfl_process_tracker_find_pid;
+    dwfl_thread_ebl;
 } ELFUTILS_0.192;
diff --git a/libdwfl/dwfl_frame.c b/libdwfl/dwfl_frame.c
index 1e715346..46b16b3a 100644
--- a/libdwfl/dwfl_frame.c
+++ b/libdwfl/dwfl_frame.c
@@ -239,6 +239,12 @@ dwfl_thread_dwfl (Dwfl_Thread *thread)
 }
 INTDEF(dwfl_thread_dwfl)
 
+Ebl *
+dwfl_thread_ebl (Dwfl_Thread *thread)
+{
+  return thread->process->ebl;
+}
+
 pid_t
 dwfl_thread_tid (Dwfl_Thread *thread)
 {
diff --git a/libdwfl/libdwfl.h b/libdwfl/libdwfl.h
index 16b351cf..1092d2e1 100644
--- a/libdwfl/libdwfl.h
+++ b/libdwfl/libdwfl.h
@@ -30,6 +30,7 @@
 #define _LIBDWFL_H	1
 
 #include "libdw.h"
+#include "libebl.h"
 #include <stdio.h>
 
 /* Handle for a session using the library to attach to a single target process.  */
@@ -786,6 +787,10 @@ pid_t dwfl_pid (Dwfl *dwfl)
 Dwfl *dwfl_thread_dwfl (Dwfl_Thread *thread)
   __nonnull_attribute__ (1);
 
+/* Return EBL associated with THREAD.  This function never fails.  */
+Ebl *dwfl_thread_ebl (Dwfl_Thread *thread)
+  __nonnull_attribute__ (1);
+
 /* Return positive TID (thread ID) for THREAD.  This function never fails.  */
 pid_t dwfl_thread_tid (Dwfl_Thread *thread)
   __nonnull_attribute__ (1);