2003-06-20 Andrew Cagney <cagney@redhat.com>

	* sim_calls.c (sim_create_inferior): Assert that
	psim_write_register succeeded.
	(sim_fetch_register, sim_store_register): Make "regname" constant.
	Delete Altivec hack.  Return result from psim_read_register /
	psim_write_register.
	* psim.h (psim_read_register, psim_write_register): Change return
	type to int.  Update comments.
	* psim.c: Update copyright.
	(psim_stack): Assert that the psim_read_register worked.
	(psim_read_register, psim_read_register): Return the register's
	size.  Allocate the cooked buffer dynamically.
	* hw_register.c: Update copyright.
	(do_register_init): Check that psim_write_register succeeded.
	* hw_init.c: Update copyright.
	(create_ppc_elf_stack_frame, create_ppc_aix_stack_frame): Assert
	that the register transfer worked.

1 files changed, 7 insertions, 4 deletions

diff --git a/sim/ppc/psim.h b/sim/ppc/psim.h
index f0cf3a5..8c1c920 100644
--- a/sim/ppc/psim.h
+++ b/sim/ppc/psim.h
@@ -138,21 +138,24 @@ extern event_queue *psim_event_queue
  
 
 
-/* manipulate the state (registers or memory) of a processor within
+/* Manipulate the state (registers or memory) of a processor within
    the system.  In the case of memory, the read/write is performed
    using the specified processors address translation tables.
 
    Where applicable, WHICH_CPU == -1 indicates all processors and
-   WHICH_CPU == <nr_cpus> indicates the `current' processor. */
+   WHICH_CPU == <nr_cpus> indicates the `current' processor.
 
-extern void psim_read_register
+   The register functions return the size of the register, or 0 if the
+   register's name is not recognized.  */
+
+extern int psim_read_register
 (psim *system,
  int which_cpu,
  void *host_ordered_buf,
  const char reg[],
  transfer_mode mode);
 
-extern void psim_write_register
+extern int psim_write_register
 (psim *system,
  int which_cpu,
  const void *buf,