armv6: bop_panic should hexdump the stack
It's the little things that make debugging easier.

@@ -32,10 +32,11 @@
 #include <sys/bootstat.h>
 #include <sys/privregs.h>
 #include <sys/cpu_asm.h>
 #include <sys/boot_mmu.h>
 #include <sys/elf.h>
+#include <sys/archsystm.h>
 
 static bootops_t bootop;
 
 /*
  * Debugging help

@@ -111,14 +112,45 @@
         char *bp_value;
 } bootprop_t;
 
 static bootprop_t *bprops = NULL;
 
+static void
+hexdump_stack()
+{
+        extern char t0stack[];
+
+        uint8_t *start = (uint8_t *)t0stack;
+        uint8_t *end = start + DEFAULTSTKSZ;
+        uint8_t *ptr;
+        int i;
+
+        bop_printf(NULL, "stack (fp = %x):\n", getfp());
+
+        ptr = (uint8_t *)(getfp() & ~0xf);
+        if (ptr <= start || ptr >= end)
+                ptr = start;
+
+        while (ptr < end) {
+                uint32_t *tmp = (uint32_t *)ptr;
+
+                bop_printf(NULL, "%p: %08x %08x %08x %08x\n", ptr,
+                    tmp[0], tmp[1], tmp[2], tmp[3]);
+
+                ptr += 16;
+        }
+
+}
+
 void
 bop_panic(const char *msg)
 {
-        bop_printf(NULL, "ARM bop_panic:\n%s\nSpinning Forever...", msg);
+        bop_printf(NULL, "ARM bop_panic:\n%s\n", msg);
+
+        hexdump_stack();
+
+        bop_printf(NULL, "Spinning Forever...", msg);
         for (;;)
                 ;
 }
 
 /*