LXR uboot/lib/efi_selftest/efi_selftest_miniapp

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * efi_selftest_miniapp_return
   4 *
   5 * Copyright (c) 2019 Heinrich Schuchardt
   6 *
   7 * This EFI application triggers an exception.
   8 */
   9
  10#include <common.h>
  11#include <efi_api.h>
  12
  13/*
  14 * Entry point of the EFI application.
  15 *
  16 * @handle      handle of the loaded image
  17 * @systable    system table
  18 * Return:      status code
  19 */
  20efi_status_t EFIAPI efi_main(efi_handle_t handle,
  21                             struct efi_system_table *systable)
  22{
  23        struct efi_simple_text_output_protocol *con_out = systable->con_out;
  24
  25        con_out->output_string(con_out,
  26                               u"EFI application triggers exception.\n");
  27
  28#if defined(CONFIG_ARM)
  29        /*
  30         * 0xe7f...f.   is undefined in ARM mode
  31         * 0xde..       is undefined in Thumb mode
  32         */
  33        asm volatile (".word 0xe7f7defb\n");
  34#elif defined(CONFIG_RISCV)
  35        asm volatile (".word 0xffffffff\n");
  36#elif defined(CONFIG_SANDBOX)
  37        asm volatile (".word 0xffffffff\n");
  38#elif defined(CONFIG_X86)
  39        asm volatile (".word 0xffff\n");
  40#endif
  41        con_out->output_string(con_out, u"Exception not triggered.\n");
  42        return EFI_ABORTED;
  43}
  44