mirror of
https://github.com/AsahiLinux/u-boot
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2b7a6e013f
The selftest checking the handling of exceptions in UEFI binaries is using assembly to provide an undefined instruction. On the sandbox the correct form of the instruction depends on the host architecture. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
50 lines
1.3 KiB
C
50 lines
1.3 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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#include <host_arch.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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u"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_X86)
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asm volatile (".word 0xffff\n");
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#elif defined(CONFIG_SANDBOX)
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#if (HOST_ARCH == HOST_ARCH_ARM || HOST_ARCH == HOST_ARCH_AARCH64)
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asm volatile (".word 0xe7f7defb\n");
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#elif (HOST_ARCH == HOST_ARCH_RISCV32 || HOST_ARCH == HOST_ARCH_RISCV64)
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asm volatile (".word 0xffffffff\n");
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#elif (HOST_ARCH == HOST_ARCH_X86 || HOST_ARCH == HOST_ARCH_X86_64)
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asm volatile (".word 0xffff\n");
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#endif
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#endif
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con_out->output_string(con_out, u"Exception not triggered.\n");
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return EFI_ABORTED;
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}
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