sandbox: add handler for exceptions
Add a handler for SIGILL, SIGBUS, SIGSEGV.
When an exception occurs print the program counter and the loaded
UEFI binaries and reset the system if CONFIG_SANDBOX_CRASH_RESET=y
or exit to the OS otherwise.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/sandbox/lib/interrupts.c b/arch/sandbox/lib/interrupts.c
index 21f761a..9c2c60b 100644
--- a/arch/sandbox/lib/interrupts.c
+++ b/arch/sandbox/lib/interrupts.c
@@ -6,7 +6,13 @@
*/
#include <common.h>
+#include <efi_loader.h>
#include <irq_func.h>
+#include <os.h>
+#include <asm-generic/signal.h>
+#include <asm/u-boot-sandbox.h>
+
+DECLARE_GLOBAL_DATA_PTR;
int interrupt_init(void)
{
@@ -21,3 +27,32 @@
{
return 0;
}
+
+void os_signal_action(int sig, unsigned long pc)
+{
+ efi_restore_gd();
+
+ switch (sig) {
+ case SIGILL:
+ printf("\nIllegal instruction\n");
+ break;
+ case SIGBUS:
+ printf("\nBus error\n");
+ break;
+ case SIGSEGV:
+ printf("\nSegmentation violation\n");
+ break;
+ default:
+ break;
+ }
+ printf("pc = 0x%lx, ", pc);
+ printf("pc_reloc = 0x%lx\n\n", pc - gd->reloc_off);
+ efi_print_image_infos((void *)pc);
+
+ if (IS_ENABLED(CONFIG_SANDBOX_CRASH_RESET)) {
+ printf("resetting ...\n\n");
+ sandbox_reset();
+ } else {
+ sandbox_exit();
+ }
+}