* arch-utils.h (legacy_register_to_value): Declare.

(legacy_value_to_register): Declare.
(legacy_convert_register_p): Declare.
* arch-utils.c (legacy_register_to_value): New function.
(legacy_value_to_register): New function.
(legacy_convert_register_p): New function.

* gdbarch.sh (REGISTER_TO_VALUE): Define.
(VALUE_TO_REGISTER): Define.
(CONVERT_REGISTER_P): Define.
* gdbarch.h, gdbarch.c: Regenerate.

* valops.c (value_assign): Use CONVERT_REGISTER_P and
VALUE_TO_REGISTER.
* findvar.c (value_from_register): Use REGISTER_TO_VALUE and
CONVERT_REGISTER_P.

* gdbint.texinfo (Target Architecture Definition): Document
REGISTER_TO_VALUE and VALUE_TO_REGISTER and CONVERT_REGISTER_P.
(Target Architecture Definition): Revise section `Using Different
Register and Memory Data Representations'.  Add section `Raw and
Virtual Register Representations'.

1 files changed, 9 insertions, 0 deletions

diff --git a/gdb/arch-utils.h b/gdb/arch-utils.h
index bcd17aaf713..594a83209a3 100644
--- a/gdb/arch-utils.h
+++ b/gdb/arch-utils.h
@@ -157,6 +157,15 @@ extern int generic_register_size (int regnum);
 /* Prop up old targets that use various IN_SIGTRAMP() macros.  */
 extern int legacy_pc_in_sigtramp (CORE_ADDR pc, char *name);
 
+/* The orginal register_convert*() functions were overloaded.  They
+   were used to both: convert between virtual and raw register formats
+   (something that is discouraged); and to convert a register to the
+   type of a corresponding variable.  These legacy functions preserve
+   that overloaded behavour in existing targets.  */
+extern int legacy_convert_register_p (int regnum);
+extern void legacy_register_to_value (int regnum, struct type *type, char *from, char *to);
+extern void legacy_value_to_register (struct type *type, int regnum, char *from, char *to);
+
 /* Initialize a ``struct info''.  Can't use memset(0) since some
    default values are not zero.  */
 extern void gdbarch_info_init (struct gdbarch_info *info);