| // 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, |
| }; |