dc22617478
This adds a utility function to check if an address is within read only section. This is extracted from logging subsys so use the new func in logging. The one is cbprintf_packaged is also replaced. Signed-off-by: Daniel Leung <daniel.leung@intel.com>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/*
|
|
* Copyright (c) 2022 Intel Corporation
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#ifndef ZEPHYR_INCLUDE_LINKER_UTILS_H_
|
|
#define ZEPHYR_INCLUDE_LINKER_UTILS_H_
|
|
|
|
#include <stdbool.h>
|
|
|
|
/**
|
|
* @brief Check if address is in read only section.
|
|
*
|
|
* Note that this may return false if the address lies outside
|
|
* the compiler's default read only sections (e.g. .rodata
|
|
* section), depending on the linker script used. This also
|
|
* applies to constants with explicit section attributes.
|
|
*
|
|
* @param addr Address.
|
|
*
|
|
* @return True if address identified within read only section.
|
|
*/
|
|
static inline bool linker_is_in_rodata(const void *addr)
|
|
{
|
|
#if defined(CONFIG_LINKER_USE_PINNED_SECTION)
|
|
extern const char lnkr_pinned_rodata_start[];
|
|
extern const char lnkr_pinned_rodata_end[];
|
|
|
|
if (((const char *)addr >= (const char *)lnkr_pinned_rodata_start) &&
|
|
((const char *)addr < (const char *)lnkr_pinned_rodata_end)) {
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_ARM) || defined(CONFIG_ARC) || defined(CONFIG_X86) || \
|
|
defined(CONFIG_ARM64) || defined(CONFIG_NIOS2) || \
|
|
defined(CONFIG_RISCV) || defined(CONFIG_SPARC) || defined(CONFIG_MIPS)
|
|
extern char __rodata_region_start[];
|
|
extern char __rodata_region_end[];
|
|
#define RO_START __rodata_region_start
|
|
#define RO_END __rodata_region_end
|
|
#elif defined(CONFIG_XTENSA)
|
|
extern const char _rodata_start[];
|
|
extern const char _rodata_end[];
|
|
#define RO_START _rodata_start
|
|
#define RO_END _rodata_end
|
|
#else
|
|
#define RO_START 0
|
|
#define RO_END 0
|
|
#endif
|
|
|
|
return (((const char *)addr >= (const char *)RO_START) &&
|
|
((const char *)addr < (const char *)RO_END));
|
|
|
|
#undef RO_START
|
|
#undef RO_END
|
|
}
|
|
|
|
#endif /* ZEPHYR_INCLUDE_LINKER_UTILS_H_ */
|