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04cc7914f2
Provide a unit test that causes an illegal instruction to occur.
The test can be run with the following commands:
=> setenv efi_selftest exception
=> bootefi selftest
This might be the output:
Executing 'exception'
EFI application triggers exception.
Illegal instruction
pc = 0x1444d016, pc_reloc = 0xffffaa078e8dd016
UEFI image [0x0000000000000000:0xffffffffffffffff] '/\selftest'
UEFI image [0x000000001444b000:0x0000000014451fff] pc=0x2016 '/bug.efi'
Resetting ...
It would tell us that the exception was triggered by an instruction
0x2016 bytes after the load address of the binary with filename /bug.efi.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
43 lines
1 KiB
C
43 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* efi_selftest_miniapp_return
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*
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* Copyright (c) 2019 Heinrich Schuchardt
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*
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* This EFI application triggers an exception.
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*/
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#include <common.h>
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#include <efi_api.h>
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/*
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* Entry point of the EFI application.
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*
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* @handle handle of the loaded image
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* @systable system table
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* @return status code
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*/
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efi_status_t EFIAPI efi_main(efi_handle_t handle,
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struct efi_system_table *systable)
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{
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struct efi_simple_text_output_protocol *con_out = systable->con_out;
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con_out->output_string(con_out,
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L"EFI application triggers exception.\n");
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#if defined(CONFIG_ARM)
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/*
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* 0xe7f...f. is undefined in ARM mode
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* 0xde.. is undefined in Thumb mode
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*/
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asm volatile (".word 0xe7f7defb\n");
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#elif defined(CONFIG_RISCV)
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asm volatile (".word 0xffffffff\n");
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#elif defined(CONFIG_SANDBOX)
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asm volatile (".word 0xffffffff\n");
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#elif defined(CONFIG_X86)
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asm volatile (".word 0xffff\n");
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#endif
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con_out->output_string(con_out, L"Exception not triggered.\n");
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return EFI_ABORTED;
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}
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