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7047a200af
On Linux, even if the architecture does not support it, the kernel will catch the fault and emulate the unaligned accesss.
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/*
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* Copyright (C) 2013 - 2016 Ludwig Knüpfer <ludwig.knuepfer@fu-berlin.de>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup cpu
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* @defgroup cpu_native Native
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* @brief Native CPU specific code
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* @details The native CPU uses system calls to simulate hardware access.
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* @ingroup cpu
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* @brief CPU abstraction for the native port
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* @{
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* @author Ludwig Knüpfer <ludwig.knuepfer@fu-berlin.de>
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*/
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#ifndef CPU_H
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#define CPU_H
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#include <stdio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief The CPU supports unaligned memory access.
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* Even if the underlying architecture does not support it, the kernel will take care of it.
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*/
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#define CPU_HAS_UNALIGNED_ACCESS
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/**
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* @brief Prints the address the callee will return to
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*/
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__attribute__((always_inline)) static inline void cpu_print_last_instruction(void)
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{
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/* __builtin_return_address will return the address the calling function
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* will return to - since cpu_print_last_instruction is forced inline,
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* it is the return address of the user of this function */
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printf("%p\n", __builtin_return_address(0));
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}
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#ifdef __cplusplus
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}
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#endif
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/** @} */
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#endif /* CPU_H */
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