New debug command: dump heap

[z180-stamp.git] / avr / debug.c

diff --git a/avr/debug.c b/avr/debug.c
index 21dd24219b319c4376775d575a3e8d8f7adfc9ce..7ff7aea3d2ed41239d75625676394e3fc4d803fc 100644 (file)
--- a/avr/debug.c
+++ b/avr/debug.c
@@ -22,19 +22,6 @@
 
 #ifdef DEBUG
 
-
-#if 0
-void dump_heap(void)
-{
-       extern unsigned int __brkval;
-
-       dump_ram(__malloc_heap_start,
-               __brkval - (unsigned int) __malloc_heap_start,
-               "=== Heap:");
-}
-#endif
-
-
 /*
  * Memory Display
  *     md addr {len}
@@ -212,11 +199,16 @@ struct __freelist {
        struct __freelist *nx;
 };
 
-extern char *__brkval;         /* first location not yet allocated */
-extern struct __freelist *__flp; /* freelist pointer (head of freelist) */
+extern char *__brkval;                         /* first location not yet allocated */
+extern struct __freelist *__flp;       /* freelist pointer (head of freelist) */
 
 #define STACK_POINTER() ((char *)AVR_STACK_POINTER_REG)
 
+size_t get_freemem(void)
+{
+       return (size_t) STACK_POINTER() - __malloc_margin - (size_t) __brkval;
+}
+
 void
 printfreelist(const char * title)
 {
@@ -241,7 +233,7 @@ printfreelist(const char * title)
                }
        }
 
-       freesum +=  (size_t) STACK_POINTER() - __malloc_margin - (size_t) __brkval;
+       freesum += get_freemem();
 
        printf("SP: %04x, __brkval: %04x, Total free: %04u\n",
                (size_t) STACK_POINTER(), (size_t) __brkval, freesum);
@@ -254,4 +246,19 @@ command_ret_t do_pr_free_avr(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED,
        return CMD_RET_SUCCESS;
 }
 
+void dump_heap(void)
+{
+       //extern unsigned int __brkval;
+
+       dump_ram((uint8_t *)__malloc_heap_start, (size_t) __malloc_heap_start,  __brkval - __malloc_heap_start,
+                                       "=== Heap:");
+}
+
+command_ret_t do_pr_heap_avr(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char * const argv[] UNUSED)
+{
+       dump_heap();
+
+       return CMD_RET_SUCCESS;
+}
+
 #endif /* DEBUG */