Changes to painic. It now prints the stack at the time of failure (if logging is initialized).

1 files changed, 9 insertions, 0 deletions

diff --git a/src/kern/panic.c b/src/kern/panic.c
index 8708456..3e67b90 100644
--- a/src/kern/panic.c
+++ b/src/kern/panic.c
@@ -12,6 +12,8 @@
 #ifdef ARCH_STM32L4
 _Noreturn void panic(const char* fmt, ...)
 {
+  uint32_t base[0];
+  disable_all_interrupts();
 
   if (get_system_init_level() > INIT_LEVEL_2) {
     va_list l;
@@ -19,6 +21,13 @@ _Noreturn void panic(const char* fmt, ...)
 
     kerr_logf("** Kernel Panic! **\n");
     kerr_vlogf(fmt, l);
+    kerr_logf("** Stack:\n");
+
+    int i = 0;
+    for (; i < 20 && &base[i] != (void*)STACK_TOP; ++ i) {
+      kerr_logf(" (%p) %p\n", &base[i], base[i]);
+    }
+
 
     set_system_clock_MHz(4); /* reduce power usage while we do nothing. */
     for(;;);