[PATCH 6/7]: Regcache: jit should use a writable regcache

[PATCH 6/7]: Regcache: jit should use a writable regcache

[Alan Hayward]

regcache_set_cached_value () is a bit of a hack, allowing the writing
to a readonly regcache.

With the previous platches in the series in place, you should instead
create a writable regcache, and update using raw_supply.


Tested on a --enable-targets=all build with board files unix,
native-gdbserver and unittest.exp.


2017-08-16  Alan Hayward  <alan.hayward@arm.com>

	* jit.c (jit_unwind_reg_set_impl): Use supply method.
	(jit_frame_sniffer): Create writable regcache.


diff --git a/gdb/jit.c b/gdb/jit.c
index e96572a8d1d7fe16561be7ba8a61b56d6bb1e85d..ed5bf160a4caa3a671aacd31b58c105a00f93ecc 100644
--- a/gdb/jit.c
+++ b/gdb/jit.c
@@ -1125,7 +1125,7 @@ jit_unwind_reg_set_impl (struct gdb_unwind_callbacks *cb, int dwarf_regnum,
      return;
    }

-  regcache_raw_set_cached_value (priv->regcache, gdb_reg, value->value);
+  priv->regcache->raw_supply (gdb_reg, value->value);
  value->free (value);
}

@@ -1206,7 +1206,7 @@ jit_frame_sniffer (const struct frame_unwind *self,

  *cache = XCNEW (struct jit_unwind_private);
  priv_data = (struct jit_unwind_private *) *cache;
-  priv_data->regcache = new regcache (gdbarch, aspace);
+  priv_data->regcache = new regcache (gdbarch, aspace, false);
  priv_data->this_frame = this_frame;

  callbacks.priv_data = priv_data;