[Sim] Patch for VPU tracing option

[Ben Elliston <bje at redhat dot com>]

The following patch implements a --trace-cpu option in the simulator,
useful for tracing vector instructions in targets that have VPUs.

I think this is a sensible addition to the sim options, so I've
primarily posted this for peer view.  Okay to commit?


2001-02-22  Ben Elliston  <bje@redhat.com>

	* sim-trace.h (TRACE_VPU_IDX): Add.
	(TRACE_vpu): Define.
	(WITH_TRACE_VPU_P): Likewise.
	(TRACE_VPU_P): Likewise.
	* sim-trace.c (OPTION_TRACE_VPU): Define.
	(trace_options): Add --trace-vpu.
	(trace_option_handler): Handle OPTION_TRACE_VPU.
	(trace_option_handler): Include VPU tracing in --trace-semantics.
	(trace_idx_to_str): Handle TRACE_VPU_IDX.

Index: sim-trace.c
===================================================================
RCS file: /cvs/src/src/sim/common/sim-trace.c,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 sim-trace.c
--- sim-trace.c	1999/04/16 01:34:59	1.1.1.1
+++ sim-trace.c	2001/02/22 03:38:00
@@ -1,5 +1,5 @@
 /* Simulator tracing/debugging support.
-   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 2001 Free Software Foundation, Inc.
    Contributed by Cygnus Support.
 
 This file is part of GDB, the GNU debugger.
@@ -76,7 +76,8 @@
   OPTION_TRACE_RANGE,
   OPTION_TRACE_FUNCTION,
   OPTION_TRACE_DEBUG,
-  OPTION_TRACE_FILE
+  OPTION_TRACE_FILE,
+  OPTION_TRACE_VPU
 };
 
 static const OPTION trace_options[] =
@@ -106,6 +107,9 @@
   { {"trace-fpu", optional_argument, NULL, OPTION_TRACE_FPU},
       '\0', "on|off", "Trace FPU operations",
       trace_option_handler },
+  { {"trace-vpu", optional_argument, NULL, OPTION_TRACE_VPU},
+      '\0', "on|off", "Trace VPU operations",
+      trace_option_handler },
   { {"trace-branch", optional_argument, NULL, OPTION_TRACE_BRANCH},
       '\0', "on|off", "Trace branching",
       trace_option_handler },
@@ -322,6 +326,13 @@
 	sim_io_eprintf (sd, "FPU tracing not compiled in, `--trace-fpu' ignored\n");
       break;
 
+    case OPTION_TRACE_VPU :
+      if (WITH_TRACE_VPU_P)
+	return set_trace_option (sd, "-vpu", TRACE_VPU_IDX, arg);
+      else
+	sim_io_eprintf (sd, "VPU tracing not compiled in, `--trace-vpu' ignored\n");
+      break;
+
     case OPTION_TRACE_BRANCH :
       if (WITH_TRACE_BRANCH_P)
 	return set_trace_option (sd, "-branch", TRACE_BRANCH_IDX, arg);
@@ -337,6 +348,7 @@
 	{
 	  if (set_trace_option (sd, "-semantics", TRACE_ALU_IDX, arg) != SIM_RC_OK
 	      || set_trace_option (sd, "-semantics", TRACE_FPU_IDX, arg) != SIM_RC_OK
+	      || set_trace_option (sd, "-semantics", TRACE_VPU_IDX, arg) != SIM_RC_OK
 	      || set_trace_option (sd, "-semantics", TRACE_MEMORY_IDX, arg) != SIM_RC_OK
 	      || set_trace_option (sd, "-semantics", TRACE_BRANCH_IDX, arg) != SIM_RC_OK)
 	    return SIM_RC_FAIL;
@@ -617,6 +629,7 @@
     case TRACE_EVENTS_IDX:  return "events:  ";
     case TRACE_FPU_IDX:     return "fpu:     ";
     case TRACE_BRANCH_IDX:  return "branch:  ";
+    case TRACE_VPU_IDX:     return "vpu:     ";
     default:
       sprintf (num, "?%d?", trace_idx);
       return num;

Index: sim-trace.h
===================================================================
RCS file: /cvs/src/src/sim/common/sim-trace.h,v
retrieving revision 1.3
diff -u -r1.3 sim-trace.h
--- sim-trace.h	2001/02/21 21:35:41	1.3
+++ sim-trace.h	2001/02/22 03:38:01
@@ -1,5 +1,5 @@
 /* Simulator tracing/debugging support.
-   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 2001 Free Software Foundation, Inc.
    Contributed by Cygnus Support.
 
 This file is part of GDB, the GNU debugger.
@@ -63,6 +63,9 @@
   /* Trace fpu operations.  */
   TRACE_FPU_IDX,
 
+  /* Trace vpu operations.  */
+  TRACE_VPU_IDX,
+
   /* Trace branching.  */
   TRACE_BRANCH_IDX,
 
@@ -100,6 +103,7 @@
 #define TRACE_core     (1 << TRACE_CORE_IDX)
 #define TRACE_events   (1 << TRACE_EVENTS_IDX)
 #define TRACE_fpu      (1 << TRACE_FPU_IDX)
+#define TRACE_vpu      (1 << TRACE_VPU_IDX)
 #define TRACE_branch   (1 << TRACE_BRANCH_IDX)
 #define TRACE_debug    (1 << TRACE_DEBUG_IDX)
 
@@ -114,6 +118,7 @@
 #define WITH_TRACE_CORE_P	(WITH_TRACE & TRACE_core)
 #define WITH_TRACE_EVENTS_P	(WITH_TRACE & TRACE_events)
 #define WITH_TRACE_FPU_P	(WITH_TRACE & TRACE_fpu)
+#define WITH_TRACE_VPU_P	(WITH_TRACE & TRACE_vpu)
 #define WITH_TRACE_BRANCH_P	(WITH_TRACE & TRACE_branch)
 #define WITH_TRACE_DEBUG_P	(WITH_TRACE & TRACE_debug)
 
@@ -210,12 +215,11 @@
 #define TRACE_CORE_P(cpu)	TRACE_P (cpu, TRACE_CORE_IDX)
 #define TRACE_EVENTS_P(cpu)	TRACE_P (cpu, TRACE_EVENTS_IDX)
 #define TRACE_FPU_P(cpu)	TRACE_P (cpu, TRACE_FPU_IDX)
+#define TRACE_VPU_P(cpu)	TRACE_P (cpu, TRACE_VPU_IDX)
 #define TRACE_BRANCH_P(cpu)	TRACE_P (cpu, TRACE_BRANCH_IDX)
 #define TRACE_DEBUG_P(cpu)	TRACE_P (cpu, TRACE_DEBUG_IDX)
 
-/* Traceing functions.
-
- */
+/* Tracing functions.  */
 
 /* Prime the trace buffers ready for any trace output.
    Must be called prior to any other trace operation */