* Makefile.in (mips-tdep.o, target-descriptions.o): Update.

	* target-descriptions.c (struct property): New.
	(struct target_desc): Add properties member.
	(tdesc_property, set_tdesc_property): New.
	* target-descriptions.h (tdesc_property, set_tdesc_property):
	Declare.
	* mips-tdep.c (PROPERTY_GP32, PROPERTY_GP64): New constants.
	(struct gdbarch_tdep): Add register_size_valid_p and register_size.
	(mips_isa_regsize): Use them.
	(mips_register_g_packet_guesses): New.
	(mips_gdbarch_init): Call it.  If a target description is supplied,
	check for internal properties.  Check for register size mismatches.
	* remote.c (send_g_packet, process_g_packet): New functions, split
	out from fetch_registers_using_g.
	(fetch_registers_using_g): Use them.
	(struct remote_g_packet_guess, remote_g_packet_guess_s)
	(struct remote_g_packet_data, remote_g_packet_data_handle)
	(remote_g_packet_data_init, register_remote_g_packet_guess)
	(remote_read_description): New.
	(init_remote_ops, init_remote_async_ops): Set to_read_description.
	(_initialize_remote): Register remote_g_packet_data_handle.
	* remote.h (register_remote_g_packet_guess): Declare.

1 files changed, 47 insertions, 0 deletions

diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c
index 041d72b..ffee104 100644
--- a/gdb/target-descriptions.c
+++ b/gdb/target-descriptions.c
@@ -26,13 +26,23 @@
 #include "arch-utils.h"
 #include "target.h"
 #include "target-descriptions.h"
+#include "vec.h"
 
 #include "gdb_assert.h"
 
 /* Types.  */
 
+typedef struct property
+{
+  const char *key;
+  const char *value;
+} property_s;
+DEF_VEC_O(property_s);
+
 struct target_desc
 {
+  /* Any architecture-specific properties specified by the target.  */
+  VEC(property_s) *properties;
 };
 
 /* Global state.  These variables are associated with the current
@@ -122,6 +132,23 @@ target_current_description (void)
   return NULL;
 }
 
+/* Return the string value of a property named KEY, or NULL if the
+   property was not specified.  */
+
+const char *
+tdesc_property (const struct target_desc *target_desc, const char *key)
+{
+  struct property *prop;
+  int ix;
+
+  for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop);
+       ix++)
+    if (strcmp (prop->key, key) == 0)
+      return prop->value;
+
+  return NULL;
+}
+
 /* Methods for constructing a target description.  */
 
 struct target_desc *
@@ -129,3 +156,23 @@ allocate_target_description (void)
 {
   return XZALLOC (struct target_desc);
 }
+
+void
+set_tdesc_property (struct target_desc *target_desc,
+		    const char *key, const char *value)
+{
+  struct property *prop, new_prop;
+  int ix;
+
+  gdb_assert (key != NULL && value != NULL);
+
+  for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop);
+       ix++)
+    if (strcmp (prop->key, key) == 0)
+      internal_error (__FILE__, __LINE__,
+		      _("Attempted to add duplicate property \"%s\""), key);
+
+  new_prop.key = key;
+  new_prop.value = value;
+  VEC_safe_push (property_s, target_desc->properties, &new_prop);
+}