[PATCH v4 32/44] gdbserver: add a pointer to the owner thread in regcache

From: Tankut Baris Aktemur <[email protected]>

Add a back-link in regcache to the thread that owns the regcache.
This will help us in future patches to refer to the right thread
object without having to rely on the global current_thread pointer.
---
 gdbserver/regcache.cc | 1 +
 gdbserver/regcache.h  | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/gdbserver/regcache.cc b/gdbserver/regcache.cc
index 7e1fd9a82e0..1084e61d62a 100644
--- a/gdbserver/regcache.cc
+++ b/gdbserver/regcache.cc
@@ -44,6 +44,7 @@ get_thread_regcache (thread_info *thread, bool fetch)
 
       thread->set_regcache (std::make_unique<struct regcache> (proc->tdesc));
       regcache = thread->regcache ();
+      regcache->thread = thread;
     }
 
   if (fetch && !regcache->registers_fetched)
diff --git a/gdbserver/regcache.h b/gdbserver/regcache.h
index 2f0fac6e7d0..abe19f9ec41 100644
--- a/gdbserver/regcache.h
+++ b/gdbserver/regcache.h
@@ -34,6 +34,9 @@ struct regcache : public reg_buffer_common
   /* The regcache's target description.  */
   const struct target_desc *tdesc = nullptr;
 
+  /* Back-link to the thread to which this regcache belongs.  */
+  thread_info *thread = nullptr;
+
   /* Whether the REGISTERS buffer's contents are fetched.  If false,
      we haven't fetched the registers from the target yet.  Note that
      this register cache is _not_ pass-through, unlike GDB's.  Also,
-- 
2.43.0

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