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https://github.com/espressif/esp-idf.git
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fc22e3c645
* Patched longjmp to be context-switch safe longjmp modifies the windowbase and windowstart registers, which isn't safe if a context switch occurs during the modification. After a context switch, windowstart and windowbase will be different, leading to a wrongly set windowstart bit due to longjmp writing it based on the windowbase before the context switch. This corrupts the registers at the next window overflow reaching that wrongly set bit. The solution is to disable interrupts during this code. It is only 6 instructions long, the impact shouldn't be significant. The fix is implemented as a wrapper which replaces the original first instructions of longjmp which are buggy. Then, it jumps back to execute the rest of the original longjmp function. Added a comparably reliable test to the test apps.
45 lines
1.5 KiB
Makefile
45 lines
1.5 KiB
Makefile
COMPONENT_ADD_INCLUDEDIRS := include esp32
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COMPONENT_SRCDIRS := patches .
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#Linker scripts used to link the final application.
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#Warning: These linker scripts are only used when the normal app is compiled; the bootloader
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#specifies its own scripts.
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LINKER_SCRIPTS += esp32.rom.ld \
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esp32.rom.libgcc.ld \
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esp32.rom.syscalls.ld \
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esp32.rom.newlib-data.ld \
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esp32.rom.api.ld
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#SPI-RAM incompatible functions can be used in when the SPI RAM
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#workaround is not enabled.
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ifndef CONFIG_SPIRAM_CACHE_WORKAROUND
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LINKER_SCRIPTS += esp32.rom.newlib-funcs.ld
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ifdef CONFIG_ESP32_REV_MIN_3
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LINKER_SCRIPTS += esp32.rom.eco3.ld
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endif
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# Include in newlib nano from ROM only if SPIRAM cache workaround is disabled
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ifdef CONFIG_NEWLIB_NANO_FORMAT
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LINKER_SCRIPTS += esp32.rom.newlib-nano.ld
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endif
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endif #CONFIG_SPIRAM_CACHE_WORKAROUND
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ifndef CONFIG_SPI_FLASH_ROM_DRIVER_PATCH
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LINKER_SCRIPTS += esp32.rom.spiflash.ld
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endif
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ifndef CONFIG_SDK_TOOLCHAIN_SUPPORTS_TIME_WIDE_64_BITS
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# If SDK_TOOLCHAIN_SUPPORTS_TIME_WIDE_64_BITS option is defined
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# then all time functions from the ROM memory will not be linked.
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# Instead, those functions can be used from the toolchain by ESP-IDF.
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LINKER_SCRIPTS += esp32.rom.newlib-time.ld
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endif
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COMPONENT_ADD_LDFLAGS += -L $(COMPONENT_PATH)/esp32/ld \
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$(addprefix -T ,$(LINKER_SCRIPTS)) \
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-l$(COMPONENT_NAME) -Wl,--wrap=longjmp \
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COMPONENT_ADD_LINKER_DEPS += $(addprefix esp32/ld/, $(LINKER_SCRIPTS))
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