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feat(esp8266): Refactor link section

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dongheng
2019-03-11 19:33:12 +08:00
parent bdfd348c7d
commit 2489388ad5
9 changed files with 26 additions and 12 deletions
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21
components/esp8266/include/esp_attr.h
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@ -26,10 +26,10 @@
#define ICACHE_RODATA_ATTR
// Forces code into IRAM instead of flash.
#define IRAM_ATTR __attribute__((section(".iram1")))
#define IRAM_ATTR _SECTION_ATTR_IMPL(".iram1", __COUNTER__)
// Forces data into DRAM instead of flash
#define DRAM_ATTR __attribute__((section(".dram0")))
#define DRAM_ATTR _SECTION_ATTR_IMPL(".dram0", __COUNTER__)
// Forces data to be 4 bytes aligned
#define WORD_ALIGNED_ATTR __attribute__((aligned(4)))
@ -41,12 +41,23 @@
// Forces data into RTC memory.
// Any variable marked with this attribute will keep its value
// during a deep sleep / wake cycle.
#define RTC_DATA_ATTR __attribute__((section(".rtc.data")))
#define RTC_DATA_ATTR _SECTION_ATTR_IMPL(".rtc.data", __COUNTER__)
// Forces read-only data into RTC memory.
#define RTC_RODATA_ATTR __attribute__((section(".rtc.rodata")))
#define RTC_RODATA_ATTR _SECTION_ATTR_IMPL(".rtc.rodata", __COUNTER__)
// Forces to put some user defined data in the binary file header, the offset is 0x10.
#define USER_DATA_ATTR __attribute__((section(".user.data")))
#define USER_DATA_ATTR _SECTION_ATTR_IMPL(".user.data", __COUNTER__)
// Implementation for a unique custom section
//
// This prevents gcc producing "x causes a section type conflict with y"
// errors if two variables in the same source file have different linkage (maybe const & non-const) but are placed in the same custom section
//
// Using unique sections also means --gc-sections can remove unused
// data with a custom section type set
#define _SECTION_ATTR_IMPL(SECTION, COUNTER) __attribute__((section(SECTION "." _COUNTER_STRINGIFY(COUNTER))))
#define _COUNTER_STRINGIFY(COUNTER) #COUNTER
#endif /* __ESP_ATTR_H__ */