diff options
| -rw-r--r-- | lib/efi_selftest/Makefile | 1 | ||||
| -rw-r--r-- | lib/efi_selftest/efi_selftest_exception.c | 50 |
2 files changed, 51 insertions, 0 deletions
diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile index 0acd790550..4b1c0bb84b 100644 --- a/lib/efi_selftest/Makefile +++ b/lib/efi_selftest/Makefile @@ -21,6 +21,7 @@ efi_selftest_devicepath.o \ efi_selftest_devicepath_util.o \ efi_selftest_events.o \ efi_selftest_event_groups.o \ +efi_selftest_exception.o \ efi_selftest_exitbootservices.o \ efi_selftest_fdt.o \ efi_selftest_gop.o \ diff --git a/lib/efi_selftest/efi_selftest_exception.c b/lib/efi_selftest/efi_selftest_exception.c new file mode 100644 index 0000000000..2ac1796c3b --- /dev/null +++ b/lib/efi_selftest/efi_selftest_exception.c @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * efi_selftest_exception + * + * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de> + * + * Test the handling of execptions by trying to execute an undefined + * instruction. + */ + +#include <efi_selftest.h> + +/** + * undefined_instruction() - try to executed an undefined instruction + */ +static void undefined_instruction(void) +{ +#if defined(CONFIG_ARM) + /* + * 0xe7f...f. is undefined in ARM mode + * 0xde.. is undefined in Thumb mode + */ + asm volatile (".word 0xe7f7defb\n"); +#elif defined(CONFIG_RISCV) + asm volatile (".word 0xffffffff\n"); +#elif defined(CONFIG_X86) + asm volatile (".word 0xffff\n"); +#endif +} + +/** + * execute() - execute unit test + * + * Return: EFI_ST_SUCCESS for success + */ +static int execute(void) +{ + undefined_instruction(); + + efi_st_error("An undefined instruction exeption was not raised\n"); + + return EFI_ST_FAILURE; +} + +EFI_UNIT_TEST(exception) = { + .name = "exception", + .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT, + .execute = execute, + .on_request = true, +}; |