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sandbox: add handler for exceptions

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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>
This commit is contained in:
Heinrich Schuchardt 2020-11-12 00:29:56 +01:00 • committed by Simon Glass
parent 21f9075def
commit b46f30a378
5 changed files with 105 additions and 0 deletions
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35
arch/sandbox/lib/interrupts.c
View file

@ -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 @@ int disable_interrupts(void)
{
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();
}
}