gdbserver: rename regcache's registers_valid to registers_fetched

The registers_valid field of the regcache struct is used for tracking
whether we have attempted to fetch all the registers from the target.
Its name does not reflect this well, I think.  It falsely gives the
impression that all the registers are valid.  This may conflict an
individual register status, which could be REG_UNAVAILABLE.  To better
reflect the purpose, rename the field to "registers_fetched".

Approved-By: Simon Marchi <simon.marchi@efficios.com>

2 files changed, 13 insertions, 12 deletions

diff --git a/gdbserver/regcache.cc b/gdbserver/regcache.cc
index 93bf598..dad0907 100644
--- a/gdbserver/regcache.cc
+++ b/gdbserver/regcache.cc
@@ -46,7 +46,7 @@ get_thread_regcache (thread_info *thread, bool fetch)
       thread->set_regcache (regcache);
     }
 
-  if (fetch && !regcache->registers_valid)
+  if (fetch && !regcache->registers_fetched)
     {
       scoped_restore_current_thread restore_thread;
 
@@ -55,7 +55,7 @@ get_thread_regcache (thread_info *thread, bool fetch)
       memset (regcache->register_status, REG_UNAVAILABLE,
 	      regcache->tdesc->reg_defs.size ());
       fetch_inferior_registers (regcache, -1);
-      regcache->registers_valid = true;
+      regcache->registers_fetched = true;
     }
 
   return regcache;
@@ -77,7 +77,7 @@ regcache_invalidate_thread (thread_info *thread)
   if (regcache == NULL)
     return;
 
-  if (regcache->registers_valid)
+  if (regcache->registers_fetched)
     {
       scoped_restore_current_thread restore_thread;
 
@@ -85,7 +85,7 @@ regcache_invalidate_thread (thread_info *thread)
       store_inferior_registers (regcache, -1);
     }
 
-  regcache->registers_valid = false;
+  regcache->registers_fetched = false;
 }
 
 /* See regcache.h.  */
@@ -146,7 +146,7 @@ init_register_cache (struct regcache *regcache,
 #endif
     }
 
-  regcache->registers_valid = false;
+  regcache->registers_fetched = false;
 
   return regcache;
 }
@@ -190,7 +190,7 @@ regcache::copy_from (regcache *src)
     memcpy (this->register_status, src->register_status,
 	    src->tdesc->reg_defs.size ());
 #endif
-  this->registers_valid = src->registers_valid;
+  this->registers_fetched = src->registers_fetched;
 }
 
 /* Return a reference to the description of register N.  */
diff --git a/gdbserver/regcache.h b/gdbserver/regcache.h
index c2e8e14..12345a3 100644
--- a/gdbserver/regcache.h
+++ b/gdbserver/regcache.h
@@ -33,12 +33,13 @@ struct regcache : public reg_buffer_common
   /* The regcache's target description.  */
   const struct target_desc *tdesc = nullptr;
 
-  /* Whether the REGISTERS buffer's contents are valid.  If false, we
-     haven't fetched the registers from the target yet.  Not that this
-     register cache is _not_ pass-through, unlike GDB's.  Note that
-     "valid" here is unrelated to whether the registers are available
-     in a traceframe.  For that, check REGISTER_STATUS below.  */
-  bool registers_valid = false;
+  /* 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,
+     note that "fetched" here is unrelated to whether the registers
+     are available in a traceframe.  For that, check REGISTER_STATUS
+     below.  */
+  bool registers_fetched = false;
   bool registers_owned = false;
   unsigned char *registers = nullptr;
 #ifndef IN_PROCESS_AGENT