Pass ptid to to_prepare_to_storeusers/simark/ptid-in-fetch-store-regs

In the same vein as to_fetch_registers and to_store_registers, we can
update to_prepare_to_store to take the ptid of the thread whose register
we want to store as a parameter, rather than reading it from
inferior_ptid.

gdb/ChangeLog:

	* target.h (struct target_ops) <to_prepare_to_store>: Add ptid_t
	parameter.
	(target_prepare_to_store): Likewise.
	* target-delegates.c: Re-generate.
	* inf-child.c (inf_child_prepare_to_store): Add ptid parameter.
	* ppc-ravenscar-thread.c
	(ppc_ravenscar_generic_prepare_to_store): Likewise.
	* ravenscar-thread.c (ravenscar_prepare_to_store): Add ptid
	parameter and use it instead of inferior_ptid.
	* ravenscar-thread.h (struct ravenscar_arch_ops)
	<to_prepare_to_store>: Add ptid parameter.
	* record-btrace.c (record_btrace_prepare_to_store): Add ptid
	parameter and use it instead of inferior_ptid.
	* record-full.c (record_full_core_prepare_to_store): Add ptid
	parameter.
	* regcache.c (regcache_raw_write): Pass ptid to
	target_prepare_to_store.
	* remote-sim.c (gdbsim_prepare_to_store): Add ptid parameter.
	* remote.c (remote_prepare_to_store): Add ptid parameter.
	* sparc-ravenscar-thread.c (sparc_ravenscar_prepare_to_store):
	Add ptid parameter.

12 files changed, 40 insertions, 28 deletions

diff --git a/gdb/inf-child.c b/gdb/inf-child.c
index 0f128c4905e..e5bf2f9ecf4 100644
--- a/gdb/inf-child.c
+++ b/gdb/inf-child.c
@@ -111,7 +111,8 @@ inf_child_post_attach (struct target_ops *self, int pid)
 
 static void
 inf_child_prepare_to_store (struct target_ops *self,
-			    struct regcache *regcache)
+			    struct regcache *regcache,
+			    ptid_t ptid)
 {
 }
 
diff --git a/gdb/ppc-ravenscar-thread.c b/gdb/ppc-ravenscar-thread.c
index 1e4eb03cf14..078182e6f5d 100644
--- a/gdb/ppc-ravenscar-thread.c
+++ b/gdb/ppc-ravenscar-thread.c
@@ -173,7 +173,7 @@ ppc_ravenscar_generic_fetch_registers
    thread.  */
 
 static void
-ppc_ravenscar_generic_prepare_to_store (struct regcache *regcache)
+ppc_ravenscar_generic_prepare_to_store (struct regcache *regcache, ptid_t ptid)
 {
   /* Nothing to do.  */
 }
diff --git a/gdb/ravenscar-thread.c b/gdb/ravenscar-thread.c
index 0660d03a5ea..27554573d1a 100644
--- a/gdb/ravenscar-thread.c
+++ b/gdb/ravenscar-thread.c
@@ -58,7 +58,8 @@ static char *ravenscar_extra_thread_info (struct target_ops *self,
 					  struct thread_info *tp);
 static int ravenscar_thread_alive (struct target_ops *ops, ptid_t ptid);
 static void ravenscar_prepare_to_store (struct target_ops *self,
-					struct regcache *regcache);
+					struct regcache *regcache,
+					ptid_t ptid);
 static void ravenscar_resume (struct target_ops *ops, ptid_t ptid, int step,
 			      enum gdb_signal siggnal);
 static void ravenscar_mourn_inferior (struct target_ops *ops);
@@ -302,21 +303,22 @@ ravenscar_store_registers (struct target_ops *ops,
 
 static void
 ravenscar_prepare_to_store (struct target_ops *self,
-			    struct regcache *regcache)
+			    struct regcache *regcache,
+			    ptid_t ptid)
 {
   struct target_ops *beneath = find_target_beneath (self);
 
   if (!ravenscar_runtime_initialized ()
-      || ptid_equal (inferior_ptid, base_magic_null_ptid)
-      || ptid_equal (inferior_ptid, ravenscar_running_thread ()))
-    beneath->to_prepare_to_store (beneath, regcache);
+      || ptid_equal (ptid, base_magic_null_ptid)
+      || ptid_equal (ptid, ravenscar_running_thread ()))
+    beneath->to_prepare_to_store (beneath, regcache, ptid);
   else
     {
       struct gdbarch *gdbarch = get_regcache_arch (regcache);
       struct ravenscar_arch_ops *arch_ops
 	= gdbarch_ravenscar_ops (gdbarch);
 
-      arch_ops->to_prepare_to_store (regcache);
+      arch_ops->to_prepare_to_store (regcache, ptid);
     }
 }
 
diff --git a/gdb/ravenscar-thread.h b/gdb/ravenscar-thread.h
index 2df88981a57..ab2f9a7c820 100644
--- a/gdb/ravenscar-thread.h
+++ b/gdb/ravenscar-thread.h
@@ -26,7 +26,7 @@ struct ravenscar_arch_ops
 {
   void (*to_fetch_registers) (struct regcache *, ptid_t, int);
   void (*to_store_registers) (struct regcache *, ptid_t, int);
-  void (*to_prepare_to_store) (struct regcache *);
+  void (*to_prepare_to_store) (struct regcache *, ptid_t);
 };
 
 #endif /* !defined (RAVENSCAR_THREAD_H) */
diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c
index 6c16148a252..6674eac8a17 100644
--- a/gdb/record-btrace.c
+++ b/gdb/record-btrace.c
@@ -1481,16 +1481,17 @@ record_btrace_store_registers (struct target_ops *ops,
 
 static void
 record_btrace_prepare_to_store (struct target_ops *ops,
-				struct regcache *regcache)
+				struct regcache *regcache,
+				ptid_t ptid)
 {
   struct target_ops *t;
 
   if (!record_btrace_generating_corefile
-      && record_btrace_is_replaying (ops, inferior_ptid))
+      && record_btrace_is_replaying (ops, ptid))
     return;
 
   t = ops->beneath;
-  t->to_prepare_to_store (t, regcache);
+  t->to_prepare_to_store (t, regcache, ptid);
 }
 
 /* The branch trace frame cache.  */
diff --git a/gdb/record-full.c b/gdb/record-full.c
index c55fb41b014..220e996e3d8 100644
--- a/gdb/record-full.c
+++ b/gdb/record-full.c
@@ -2065,7 +2065,8 @@ record_full_core_fetch_registers (struct target_ops *ops,
 
 static void
 record_full_core_prepare_to_store (struct target_ops *self,
-				   struct regcache *regcache)
+				   struct regcache *regcache,
+				   ptid_t ptid)
 {
 }
 
diff --git a/gdb/regcache.c b/gdb/regcache.c
index c8eb200fa27..1b017502b61 100644
--- a/gdb/regcache.c
+++ b/gdb/regcache.c
@@ -949,7 +949,7 @@ regcache_raw_write (struct regcache *regcache, int regnum,
   chain_before_save_inferior = save_inferior_ptid ();
   inferior_ptid = regcache->ptid;
 
-  target_prepare_to_store (regcache);
+  target_prepare_to_store (regcache, regcache->ptid);
   regcache_raw_set_cached_value (regcache, regnum, buf);
 
   /* Register a cleanup function for invalidating the register after it is
diff --git a/gdb/remote-sim.c b/gdb/remote-sim.c
index b7ecdbb05f3..81626f31359 100644
--- a/gdb/remote-sim.c
+++ b/gdb/remote-sim.c
@@ -82,7 +82,8 @@ static void gdbsim_detach (struct target_ops *ops, const char *args,
 			   int from_tty);
 
 static void gdbsim_prepare_to_store (struct target_ops *self,
-				     struct regcache *regcache);
+				     struct regcache *regcache,
+				     ptid_t ptid);
 
 static void gdbsim_files_info (struct target_ops *target);
 
@@ -1060,7 +1061,8 @@ gdbsim_wait (struct target_ops *ops,
    debugged.  */
 
 static void
-gdbsim_prepare_to_store (struct target_ops *self, struct regcache *regcache)
+gdbsim_prepare_to_store (struct target_ops *self, struct regcache *regcache,
+			 ptid_t ptid)
 {
   /* Do nothing, since we can store individual regs.  */
 }
diff --git a/gdb/remote.c b/gdb/remote.c
index b7ffa4a28fb..e4c4717e45b 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -106,7 +106,8 @@ static int getpkt_or_notif_sane (char **buf, long *sizeof_buf,
 static void remote_files_info (struct target_ops *ignore);
 
 static void remote_prepare_to_store (struct target_ops *self,
-				     struct regcache *regcache);
+				     struct regcache *regcache,
+				     ptid_t ptid);
 
 static void remote_open_1 (const char *, int, struct target_ops *,
 			   int extended_p);
@@ -7755,7 +7756,8 @@ remote_fetch_registers (struct target_ops *ops, struct regcache *regcache,
    first.  */
 
 static void
-remote_prepare_to_store (struct target_ops *self, struct regcache *regcache)
+remote_prepare_to_store (struct target_ops *self, struct regcache *regcache,
+			 ptid_t ptid)
 {
   struct remote_arch_state *rsa = get_remote_arch_state ();
   int i;
diff --git a/gdb/sparc-ravenscar-thread.c b/gdb/sparc-ravenscar-thread.c
index 4e63ec5a3c4..9d340d2289a 100644
--- a/gdb/sparc-ravenscar-thread.c
+++ b/gdb/sparc-ravenscar-thread.c
@@ -25,7 +25,8 @@
 #include "ravenscar-thread.h"
 #include "sparc-ravenscar-thread.h"
 
-static void sparc_ravenscar_prepare_to_store (struct regcache *regcache);
+static void sparc_ravenscar_prepare_to_store (struct regcache *regcache,
+					      ptid_t ptid);
 
 /* Register offsets from a referenced address (exempli gratia the
    Thread_Descriptor).  The referenced address depends on the register
@@ -141,7 +142,7 @@ sparc_ravenscar_fetch_registers (struct regcache *regcache, ptid_t ptid,
    thread.  */
 
 static void
-sparc_ravenscar_prepare_to_store (struct regcache *regcache)
+sparc_ravenscar_prepare_to_store (struct regcache *regcache, ptid_t ptid)
 {
   /* Nothing to do.  */
 }
diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c
index 3f1c236d8f3..26534382b7b 100644
--- a/gdb/target-delegates.c
+++ b/gdb/target-delegates.c
@@ -216,27 +216,29 @@ debug_store_registers (struct target_ops *self, struct regcache *arg1, ptid_t ar
 }
 
 static void
-delegate_prepare_to_store (struct target_ops *self, struct regcache *arg1)
+delegate_prepare_to_store (struct target_ops *self, struct regcache *arg1, ptid_t arg2)
 {
   self = self->beneath;
-  self->to_prepare_to_store (self, arg1);
+  self->to_prepare_to_store (self, arg1, arg2);
 }
 
 static void
-tdefault_prepare_to_store (struct target_ops *self, struct regcache *arg1)
+tdefault_prepare_to_store (struct target_ops *self, struct regcache *arg1, ptid_t arg2)
 {
   noprocess ();
 }
 
 static void
-debug_prepare_to_store (struct target_ops *self, struct regcache *arg1)
+debug_prepare_to_store (struct target_ops *self, struct regcache *arg1, ptid_t arg2)
 {
   fprintf_unfiltered (gdb_stdlog, "-> %s->to_prepare_to_store (...)\n", debug_target.to_shortname);
-  debug_target.to_prepare_to_store (&debug_target, arg1);
+  debug_target.to_prepare_to_store (&debug_target, arg1, arg2);
   fprintf_unfiltered (gdb_stdlog, "<- %s->to_prepare_to_store (", debug_target.to_shortname);
   target_debug_print_struct_target_ops_p (&debug_target);
   fputs_unfiltered (", ", gdb_stdlog);
   target_debug_print_struct_regcache_p (arg1);
+  fputs_unfiltered (", ", gdb_stdlog);
+  target_debug_print_ptid_t (arg2);
   fputs_unfiltered (")\n", gdb_stdlog);
 }
 
diff --git a/gdb/target.h b/gdb/target.h
index d6c07ad44d8..4a0749de868 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -474,7 +474,7 @@ struct target_ops
     void (*to_store_registers) (struct target_ops *, struct regcache *, ptid_t,
 			        int)
       TARGET_DEFAULT_NORETURN (noprocess ());
-    void (*to_prepare_to_store) (struct target_ops *, struct regcache *)
+    void (*to_prepare_to_store) (struct target_ops *, struct regcache *, ptid_t)
       TARGET_DEFAULT_NORETURN (noprocess ());
 
     void (*to_files_info) (struct target_ops *)
@@ -1401,8 +1401,8 @@ extern void target_store_registers (struct regcache *regcache, ptid_t ptid,
    that REGISTERS contains all the registers from the program being
    debugged.  */
 
-#define	target_prepare_to_store(regcache)	\
-     (*current_target.to_prepare_to_store) (&current_target, regcache)
+#define	target_prepare_to_store(regcache, ptid)	\
+     (*current_target.to_prepare_to_store) (&current_target, regcache, ptid)
 
 /* Determine current address space of thread PTID.  */