From: Simon Marchi <simon.marchi@efficios.com>
Date: Fri, 4 Dec 2020 21:43:56 +0000 (-0500)
Subject: gdb: change linux gdbarch data from post to pre-init
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d965505887c27e8b1d6e84cb06c2b131aad08093;p=binutils-gdb.git

gdb: change linux gdbarch data from post to pre-init

The following patch will need to fill a field in linux_gdbarch_data
while the gdbarch is being built.  linux_gdbarch_data is currently
allocated as a post-init gdbarch data, meaning it's not possible to fill
it before the gdbarch is completely initialized.  Change it to a
pre-init gdbarch data to allow this.

The init_linux_gdbarch_data function doesn't use the created gdbarch,
it only allocates the linux_gdbarch_data structure on the gdbarch's
obstack, so the change is trivial.

gdb/ChangeLog:

	* linux-tdep.c (init_linux_gdbarch_data): Change parameter to
	obkstack.
	(_initialize_linux_tdep): Register pre-init gdb data instead of
	post-init.

Change-Id: If35ce91b6bb5435680d43b9268d811d95661644f
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f39730fa585..d79b2217dea 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,10 @@
+2020-12-04  Simon Marchi  <simon.marchi@efficios.com>
+
+	* linux-tdep.c (init_linux_gdbarch_data): Change parameter to
+	obkstack.
+	(_initialize_linux_tdep): Register pre-init gdb data instead of
+	post-init.
+
 2020-12-04  Simon Marchi  <simon.marchi@efficios.com>
 
 	* displaced-stepping.h (struct
diff --git a/gdb/linux-tdep.c b/gdb/linux-tdep.c
index 70e74d51097..57ea45cf6b6 100644
--- a/gdb/linux-tdep.c
+++ b/gdb/linux-tdep.c
@@ -171,9 +171,9 @@ struct linux_gdbarch_data
   };
 
 static void *
-init_linux_gdbarch_data (struct gdbarch *gdbarch)
+init_linux_gdbarch_data (struct obstack *obstack)
 {
-  return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct linux_gdbarch_data);
+  return obstack_zalloc<linux_gdbarch_data> (obstack);
 }
 
 static struct linux_gdbarch_data *
@@ -2676,7 +2676,7 @@ void
 _initialize_linux_tdep ()
 {
   linux_gdbarch_data_handle =
-    gdbarch_data_register_post_init (init_linux_gdbarch_data);
+    gdbarch_data_register_pre_init (init_linux_gdbarch_data);
 
   /* Observers used to invalidate the cache when needed.  */
   gdb::observers::inferior_exit.attach (invalidate_linux_cache_inf);