add serial logging for exceptions, fix virtualbox issue

1 files changed, 36 insertions, 1 deletions

diff --git a/kernel/source/interrupts.cpp b/kernel/source/interrupts.cpp
index f8e613e..4046021 100644
--- a/kernel/source/interrupts.cpp
+++ b/kernel/source/interrupts.cpp
@@ -1,4 +1,5 @@
 #include <hilbert/kernel/framebuffer.hpp>
+#include <hilbert/kernel/serial.hpp>
 #include <hilbert/kernel/input.hpp>
 #include <hilbert/kernel/panic.hpp>
 
@@ -36,13 +37,47 @@ struct [[gnu::packed]] exception_info_t {
 
 extern exception_info_t exception_info;
 
+static inline void print_reg(const char *regname, uint64_t value) {
+  serial_putstr("  ");
+  serial_putstr(regname);
+  serial_putstr(" = 0x");
+  serial_puthex<16>(value);
+  serial_putchar('\n');
+}
+
 extern "C" [[noreturn]] void print_exception() {
 
   //so exception_info's type is known by gdb
   exception_info_t the_exception_info = exception_info;
   (void)the_exception_info;
 
-  //TODO: log exception, and recover if possible.
+  serial_putstr("exception 0x");
+  serial_puthex<2>(exception_info.exception_number);
+  serial_putchar('\n');
+
+  if (exception_info.has_error)
+    print_reg("error code", exception_info.error);
+
+  print_reg("rflags", exception_info.rflags);
+  print_reg("rip", exception_info.rip);
+  print_reg("cr2", exception_info.cr2);
+  print_reg("cr3", exception_info.cr3);
+  print_reg("rax", exception_info.rax);
+  print_reg("rbx", exception_info.rbx);
+  print_reg("rcx", exception_info.rcx);
+  print_reg("rdx", exception_info.rdx);
+  print_reg("rdi", exception_info.rdi);
+  print_reg("rsi", exception_info.rsi);
+  print_reg("rbp", exception_info.rbp);
+  print_reg("rsp", exception_info.rsp);
+  print_reg("r8 ", exception_info.r8 );
+  print_reg("r9 ", exception_info.r9 );
+  print_reg("r10", exception_info.r10);
+  print_reg("r11", exception_info.r11);
+  print_reg("r12", exception_info.r12);
+  print_reg("r13", exception_info.r13);
+  print_reg("r14", exception_info.r14);
+  print_reg("r15", exception_info.r15);
 
   panic(0xba40bb);