--- gforth/engine/profile.c	2001/02/27 21:17:11	1.1
+++ gforth/engine/profile.c	2003/03/09 15:17:03	1.8
@@ -1,6 +1,6 @@
 /* VM profiling support stuff
 
-  Copyright (C) 2001 Free Software Foundation, Inc.
+  Copyright (C) 2001,2002 Free Software Foundation, Inc.
 
   This file is part of Gforth.
 
@@ -20,9 +20,11 @@
 */
 
 #include "config.h"
+#include "forth.h"
 #include <stdlib.h>
 #include <stdio.h>
-#include "forth.h"
+#include <assert.h>
+
 
 /* data structure: simple hash table with external chaining */
 
@@ -65,6 +67,7 @@ block_count *block_insert(Xt *ip)
   new->ip = ip;
   new->count = 0LL;
   new->insts = malloc(0);
+  assert(new->insts != NULL);
   new->ninsts = 0;
   blocks[hash(ip)] = new;
   return new;
@@ -72,7 +75,7 @@ block_count *block_insert(Xt *ip)
 
 void add_inst(block_count *b, char *inst)
 {
-  b->insts = realloc(b->insts, b->ninsts * sizeof(char *));
+  b->insts = realloc(b->insts, (b->ninsts+1) * sizeof(char *));
   b->insts[b->ninsts++] = inst;
 }
 
@@ -81,8 +84,11 @@ void vm_count_block(Xt *ip)
   block_insert(ip)->count++;
 }
 
-/* !! fix this */
-#define VM_INST(n) NULL
+#ifdef DIRECT_THREADED
+#define VM_IS_INST(inst, n) ((inst) == vm_prims[(n)+DOESJUMP+1])
+#else
+#define VM_IS_INST(inst, n) ((inst) == &(vm_prims[(n)+DOESJUMP+1]))
+#endif
 
 void postprocess_block(block_count *b)
 {
@@ -96,6 +102,7 @@ void postprocess_block(block_count *b)
       add_inst(b,"unknown");
       ip++;
     }
+  _endif_:
     next_block = block_lookup(ip);
   } while (next_block == NULL);
   /* we fell through, so set fallthrough and update the count */
@@ -121,10 +128,45 @@ void postprocess(void)
    }
 }
 
+#if 0
+/* full basic blocks only */
+void print_block(FILE *file, block_count *b)
+{
+  size_t i;
+
+  fprintf(file,"%14lld\t",b->count);
+  for (i=0; i<b->ninsts; i++)
+    fprintf(file, "%s ", b->insts[i]);
+  putc('\n', file);
+}
+#elif 0
+/* full basic blocks and all their prefixes */
 void print_block(FILE *file, block_count *b)
 {
-  fprintf(file,"%12lld ip=%p\n",b->count,b->ip);
+  size_t i,j;
+
+  for (j=1; j<=b->ninsts; j++) {
+    fprintf(file,"%14lld\t",b->count);
+    for (i=0; i<j; i++)
+      fprintf(file, "%s ", b->insts[i]);
+    putc('\n', file);
+  }
+}
+#else
+/* all subsequences up to length 12 */
+void print_block(FILE *file, block_count *b)
+{
+  size_t i,j,k;
+
+  for (i=2; i<12; i++)
+    for (j=0; i+j<=b->ninsts; j++) {
+      fprintf(file,"%14lld\t",b->count);
+      for (k=j; k<i+j; k++)
+	fprintf(file, "%s ", b->insts[k]);
+      putc('\n', file);
+    }
 }
+#endif
 
 void vm_print_profile(FILE *file)
 {