61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
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/*
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* Copyright (c) 2022 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_INCLUDE_LINKER_UTILS_H_
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#define ZEPHYR_INCLUDE_LINKER_UTILS_H_
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#include <stdbool.h>
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/**
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* @brief Check if address is in read only section.
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*
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* Note that this may return false if the address lies outside
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* the compiler's default read only sections (e.g. .rodata
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* section), depending on the linker script used. This also
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* applies to constants with explicit section attributes.
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*
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* @param addr Address.
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*
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* @return True if address identified within read only section.
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*/
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static inline bool linker_is_in_rodata(const void *addr)
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{
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#if defined(CONFIG_LINKER_USE_PINNED_SECTION)
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extern const char lnkr_pinned_rodata_start[];
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extern const char lnkr_pinned_rodata_end[];
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if (((const char *)addr >= (const char *)lnkr_pinned_rodata_start) &&
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((const char *)addr < (const char *)lnkr_pinned_rodata_end)) {
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return true;
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}
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#endif
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#if defined(CONFIG_ARM) || defined(CONFIG_ARC) || defined(CONFIG_X86) || \
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defined(CONFIG_ARM64) || defined(CONFIG_NIOS2) || \
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defined(CONFIG_RISCV) || defined(CONFIG_SPARC) || defined(CONFIG_MIPS)
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extern char __rodata_region_start[];
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extern char __rodata_region_end[];
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#define RO_START __rodata_region_start
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#define RO_END __rodata_region_end
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#elif defined(CONFIG_XTENSA)
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extern const char _rodata_start[];
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extern const char _rodata_end[];
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#define RO_START _rodata_start
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#define RO_END _rodata_end
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#else
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#define RO_START 0
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#define RO_END 0
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#endif
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return (((const char *)addr >= (const char *)RO_START) &&
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((const char *)addr < (const char *)RO_END));
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#undef RO_START
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#undef RO_END
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}
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#endif /* ZEPHYR_INCLUDE_LINKER_UTILS_H_ */
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