kopia lustrzana https://github.com/espressif/esp-idf
209 wiersze
8.1 KiB
C
209 wiersze
8.1 KiB
C
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/*
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* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef __ESP_ATTR_H__
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#define __ESP_ATTR_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "sdkconfig.h"
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#define ROMFN_ATTR
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//Normally, the linker script will put all code and rodata in flash,
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//and all variables in shared RAM. These macros can be used to redirect
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//particular functions/variables to other memory regions.
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// Forces code into IRAM instead of flash
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#define IRAM_ATTR _SECTION_ATTR_IMPL(".iram1", __COUNTER__)
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// Forces data into DRAM instead of flash
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#define DRAM_ATTR _SECTION_ATTR_IMPL(".dram1", __COUNTER__)
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// Forces code into TCM instead of flash
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#define TCM_IRAM_ATTR _SECTION_ATTR_IMPL(".tcm.text", __COUNTER__)
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// Forces data into TCM instead of L2MEM
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#define TCM_DRAM_ATTR _SECTION_ATTR_IMPL(".tcm.data", __COUNTER__)
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// IRAM can only be accessed as an 8-bit memory on ESP32, when CONFIG_ESP32_IRAM_AS_8BIT_ACCESSIBLE_MEMORY is set
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#define IRAM_8BIT_ACCESSIBLE (CONFIG_IDF_TARGET_ESP32 && CONFIG_ESP32_IRAM_AS_8BIT_ACCESSIBLE_MEMORY)
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// Make sure that IRAM is accessible as an 8-bit memory on ESP32.
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// If that's not the case, coredump cannot dump data from IRAM.
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#if IRAM_8BIT_ACCESSIBLE
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// Forces data into IRAM instead of DRAM
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#define IRAM_DATA_ATTR __attribute__((section(".iram.data")))
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// Forces data into IRAM instead of DRAM and map it to coredump
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#define COREDUMP_IRAM_DATA_ATTR _SECTION_ATTR_IMPL(".iram2.coredump", __COUNTER__)
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// Forces bss into IRAM instead of DRAM
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#define IRAM_BSS_ATTR __attribute__((section(".iram.bss")))
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#else
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// IRAM is not accessible as an 8-bit memory, put IRAM coredump variables in DRAM
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#define COREDUMP_IRAM_DATA_ATTR COREDUMP_DRAM_ATTR
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#define IRAM_DATA_ATTR
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#define IRAM_BSS_ATTR
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#endif
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// Forces data to be 4 bytes aligned
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#define WORD_ALIGNED_ATTR __attribute__((aligned(4)))
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// Forces data to be placed to DMA-capable places
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#define DMA_ATTR WORD_ALIGNED_ATTR DRAM_ATTR
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//Force data to be placed in DRAM and aligned according to DMA and cache's requirement
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#if SOC_CACHE_INTERNAL_MEM_VIA_L1CACHE
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#define DRAM_DMA_ALIGNED_ATTR __attribute__((aligned(CONFIG_CACHE_L1_CACHE_LINE_SIZE))) DRAM_ATTR
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#else
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#define DRAM_DMA_ALIGNED_ATTR WORD_ALIGNED_ATTR DRAM_ATTR
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#endif
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// Forces the data to be tightly packed with minimum required padding and no extra bytes are added for alignment
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#define PACKED_ATTR __attribute__((packed))
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// Forces a function to be inlined
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#define FORCE_INLINE_ATTR static inline __attribute__((always_inline))
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// Forces a string into DRAM instead of flash
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// Use as esp_rom_printf(DRAM_STR("Hello world!\n"));
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#define DRAM_STR(str) (__extension__({static const DRAM_ATTR char __c[] = (str); (const char *)&__c;}))
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#if CONFIG_SOC_RTC_FAST_MEM_SUPPORTED || CONFIG_SOC_RTC_SLOW_MEM_SUPPORTED
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// Forces data into RTC memory. See "docs/deep-sleep-stub.rst"
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// Any variable marked with this attribute will keep its value
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// during a deep sleep / wake cycle.
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#define RTC_DATA_ATTR _SECTION_ATTR_IMPL(".rtc.data", __COUNTER__)
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// Forces data into RTC memory of .noinit section.
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// Any variable marked with this attribute will keep its value
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// after restart or during a deep sleep / wake cycle.
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#define RTC_NOINIT_ATTR _SECTION_ATTR_IMPL(".rtc_noinit", __COUNTER__)
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// Forces read-only data into RTC memory. See "docs/deep-sleep-stub.rst"
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#define RTC_RODATA_ATTR _SECTION_ATTR_IMPL(".rtc.rodata", __COUNTER__)
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// Forces data into RTC memory and map it to coredump
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#define COREDUMP_RTC_DATA_ATTR _SECTION_ATTR_IMPL(".rtc.coredump", __COUNTER__)
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// Allows to place data into RTC_SLOW memory.
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#define RTC_SLOW_ATTR _SECTION_ATTR_IMPL(".rtc.force_slow", __COUNTER__)
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// Forces code into RTC fast memory. See "docs/deep-sleep-stub.rst"
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#define RTC_IRAM_ATTR _SECTION_ATTR_IMPL(".rtc.text", __COUNTER__)
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// Allows to place data into RTC_FAST memory.
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#define RTC_FAST_ATTR _SECTION_ATTR_IMPL(".rtc.force_fast", __COUNTER__)
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// Allows to place data into RTC_FAST memory and map it to coredump
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#define COREDUMP_RTC_FAST_ATTR _SECTION_ATTR_IMPL(".rtc.fast.coredump", __COUNTER__)
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#else
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#define RTC_DATA_ATTR
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#define RTC_NOINIT_ATTR
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#define RTC_RODATA_ATTR
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#define COREDUMP_RTC_DATA_ATTR
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#define RTC_SLOW_ATTR
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#define RTC_IRAM_ATTR
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#define RTC_FAST_ATTR
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#define COREDUMP_RTC_FAST_ATTR
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#endif
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#if CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
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// Forces bss variable into external memory. "
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#define EXT_RAM_BSS_ATTR _SECTION_ATTR_IMPL(".ext_ram.bss", __COUNTER__)
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#else
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#define EXT_RAM_BSS_ATTR
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#endif
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/**
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* Deprecated Macro for putting .bss on PSRAM
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*/
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#if CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
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// Forces bss variable into external memory. "
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#define EXT_RAM_ATTR _SECTION_ATTR_IMPL(".ext_ram.bss", __COUNTER__) _Pragma ("GCC warning \"'EXT_RAM_ATTR' macro is deprecated, please use `EXT_RAM_BSS_ATTR`\"")
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#else
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#define EXT_RAM_ATTR _Pragma ("GCC warning \"'EXT_RAM_ATTR' macro is deprecated, please use `EXT_RAM_BSS_ATTR`\"")
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#endif
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// Forces data into noinit section to avoid initialization after restart.
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#define __NOINIT_ATTR _SECTION_ATTR_IMPL(".noinit", __COUNTER__)
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#if CONFIG_SPIRAM_ALLOW_NOINIT_SEG_EXTERNAL_MEMORY
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// Forces data into external memory noinit section to avoid initialization after restart.
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#define EXT_RAM_NOINIT_ATTR _SECTION_ATTR_IMPL(".ext_ram_noinit", __COUNTER__)
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#else
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// Place in internal noinit section
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#define EXT_RAM_NOINIT_ATTR __NOINIT_ATTR
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#endif
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// Forces code into DRAM instead of flash and map it to coredump
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// Use dram2 instead of dram1 to make sure this section will not be included
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// by dram1 section in the linker script
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#define COREDUMP_DRAM_ATTR _SECTION_ATTR_IMPL(".dram2.coredump", __COUNTER__)
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// Forces to not inline function
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#define NOINLINE_ATTR __attribute__((noinline))
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// This allows using enum as flags in C++
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// Format: FLAG_ATTR(flag_enum_t)
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#ifdef __cplusplus
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// Inline is required here to avoid multiple definition error in linker
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#define FLAG_ATTR_IMPL(TYPE, INT_TYPE) \
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FORCE_INLINE_ATTR constexpr TYPE operator~ (TYPE a) { return (TYPE)~(INT_TYPE)a; } \
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FORCE_INLINE_ATTR constexpr TYPE operator| (TYPE a, TYPE b) { return (TYPE)((INT_TYPE)a | (INT_TYPE)b); } \
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FORCE_INLINE_ATTR constexpr TYPE operator& (TYPE a, TYPE b) { return (TYPE)((INT_TYPE)a & (INT_TYPE)b); } \
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FORCE_INLINE_ATTR constexpr TYPE operator^ (TYPE a, TYPE b) { return (TYPE)((INT_TYPE)a ^ (INT_TYPE)b); } \
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FORCE_INLINE_ATTR constexpr TYPE operator>> (TYPE a, int b) { return (TYPE)((INT_TYPE)a >> b); } \
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FORCE_INLINE_ATTR constexpr TYPE operator<< (TYPE a, int b) { return (TYPE)((INT_TYPE)a << b); } \
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FORCE_INLINE_ATTR TYPE& operator|=(TYPE& a, TYPE b) { a = a | b; return a; } \
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FORCE_INLINE_ATTR TYPE& operator&=(TYPE& a, TYPE b) { a = a & b; return a; } \
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FORCE_INLINE_ATTR TYPE& operator^=(TYPE& a, TYPE b) { a = a ^ b; return a; } \
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FORCE_INLINE_ATTR TYPE& operator>>=(TYPE& a, int b) { a = a >> b; return a; } \
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FORCE_INLINE_ATTR TYPE& operator<<=(TYPE& a, int b) { a = a << b; return a; }
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#define FLAG_ATTR_U32(TYPE) FLAG_ATTR_IMPL(TYPE, uint32_t)
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#define FLAG_ATTR FLAG_ATTR_U32
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#else
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#define FLAG_ATTR(TYPE)
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#endif
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// Implementation for a unique custom section
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//
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// This prevents gcc producing "x causes a section type conflict with y"
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// errors if two variables in the same source file have different linkage (maybe const & non-const) but are placed in the same custom section
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//
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// Using unique sections also means --gc-sections can remove unused
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// data with a custom section type set
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#ifndef CONFIG_IDF_TARGET_LINUX
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#define _SECTION_ATTR_IMPL(SECTION, COUNTER) __attribute__((section(SECTION "." _COUNTER_STRINGIFY(COUNTER))))
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#define _COUNTER_STRINGIFY(COUNTER) #COUNTER
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#else
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// Custom section attributes are generally not used in the port files for Linux target, but may be found
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// in the common header files. Don't declare custom sections in that case.
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#define _SECTION_ATTR_IMPL(SECTION, COUNTER)
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#endif
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/* Use IDF_DEPRECATED attribute to mark anything deprecated from use in
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ESP-IDF's own source code, but not deprecated for external users.
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*/
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#ifdef CONFIG_IDF_CI_BUILD
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#define IDF_DEPRECATED(REASON) __attribute__((deprecated(REASON)))
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#else
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#define IDF_DEPRECATED(REASON)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ESP_ATTR_H__ */
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