[sim/rx]

* README.txt: New.
* config.h (CYCLE_ACCURATE, CYCLE_STATS): New.
* configure.in (--enable-cycle-accurate, --enable-cycle-stats):
New.  Default to enabled.
* configure: Regenerate.

* cpu.h (regs_type): Add cycle tracking info.
(reset_pipeline_stats): Declare.
(halt_pipeline_stats): Declare.
(pipeline_stats): Declare.
* main.c (done): Call pipeline_stats().
* mem.h (rx_mem_ptr): Moved to here ...
* mem.c (mem_ptr): ... from here.  Rename throughout.
(mem_put_byte): Move LEDs to Port A.  Add Port B to control cycle
statistics.  Move UART to SCI4.
(mem_put_hi): Add TPU 1-2.  TPU 1 and 2 count CPU cycles.
* reg.c (init_regs): Set Rt reg to -1 (no reg).
* rx.c: Add cycle counting and statistics throughout.
(rx_get_byte): Optimize for speed.
(decode_opcode): Likewise.
(reset_pipeline_stats): New.
(halt_pipeline_stats): New.
(pipeline_stats): New.
* trace.c (sim_disasm_one): Print cycle count.

[include/opcode]
* rx.h (RX_Opcode_ID): Add nop2 and nop3 for statistics.

1 files changed, 6 insertions, 0 deletions

diff --git a/sim/rx/reg.c b/sim/rx/reg.c
index f635b6d..0103d21 100644
--- a/sim/rx/reg.c
+++ b/sim/rx/reg.c
@@ -19,6 +19,7 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 
+#include "config.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -67,6 +68,11 @@ init_regs (void)
 {
   memset (&regs, 0, sizeof (regs));
   memset (&oldregs, 0, sizeof (oldregs));
+
+#ifdef CYCLE_ACCURATE
+  regs.rt = -1;
+  oldregs.rt = -1;
+#endif
 }
 
 static unsigned int