1 files changed, 45 insertions, 0 deletions
diff --git a/arch/x86_64/panic/panic.c b/arch/x86_64/panic/panic.c
new file mode 100644
index 0000000..a19f807
--- /dev/null
+++ b/arch/x86_64/panic/panic.c
@@ -0,0 +1,45 @@
+#include "panic/panic.h"
+#include "arch/x86_64/hal/idt.h"
+#include "arch/x86_64/x86_64.h"
+#include "arch/x86_64/hal/paging.h"
+#include "lib/printf.h"
+
+__attribute__((naked))
+void*
+__panic_get_bp(void)
+{
+    asm("movq %%rbp, %%rax; \
+         retq"::: "memory");
+}
+
+void*
+__panic_print_istate(void *state)
+{
+    struct int_stackframe *int_state = state;
+    kprintf("RIP: %p | RSP: %p\n", int_state->int_rip, int_state->int_rsp);
+
+    print_state(&int_state->state);
+    return (void*)int_state->state.rbp;
+}
+
+void 
+__panic_stack_trace(void *bp)
+{
+    uintmax_t *rbp = (uintmax_t*)bp;
+    kprintf("\nStack trace:\n");
+
+    while(rbp) {
+        kprintf("%p:\n", rbp[1]);
+        uintmax_t *next = (uintmax_t*)rbp[0];
+        ptrdiff_t dist = (next - rbp);
+
+        if((uintptr_t)next < IDENT_VIRT_BASE) break;
+        if(dist > 0) {
+            for(size_t i = 0; i < dist; i++) {
+                kprintf("    %p\n", rbp[i]);
+            }
+        }
+
+        rbp = next;
+    }
+}