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https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
096c013675
...and all their callers. With the upcoming switch from sizeof(time_t)==4 to sizeof(time_t)==8, sizeof(struct stat) is also increasing. A few newlib functions present in ROM allocate 'struct stat' on the stack and call _fstat_r on this structure. The implementation of fstat is provided in ESP-IDF. This implementation will often do memset(st, 0, sizeof(*st)), where st is 'struct stat*', before setting some fields of this structure. If IDF is built with sizeof(st) different from sizeof(st) which ROM was built with, this will lead to an out-of-bounds write and a stack corruption. This commit removes problematic ROM functions from the linker script. Here are the functions which allocate 'struct stat': * _isatty_r (in ROM) * __swhatbuf_r, called by __smakebuf_r, called by __swsetup_r and __srefill_r (in ROM) * _fseeko_r (not in ROM) * glob2 (not in ROM) * _gettemp (not in ROM) As a result, these functions are used from libc.a, and use correct size of 'stat' structure. Closes https://github.com/espressif/esp-idf/issues/7980
176 lines
5.7 KiB
CMake
176 lines
5.7 KiB
CMake
idf_build_get_property(target IDF_TARGET)
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set(include_dirs "include" "include/${target}")
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set(private_required_comp "")
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set(sources "")
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if(target STREQUAL "linux")
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list(APPEND sources "${target}/esp_rom_sys.c"
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"${target}/esp_rom_crc.c"
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"${target}/esp_rom_md5.c"
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"${target}/esp_rom_efuse.c")
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else()
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list(APPEND include_dirs "${target}")
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list(APPEND sources "patches/esp_rom_crc.c"
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"patches/esp_rom_sys.c"
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"patches/esp_rom_uart.c"
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"patches/esp_rom_tjpgd.c")
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list(APPEND private_required_comp soc hal)
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endif()
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if(CONFIG_IDF_TARGET_ARCH_XTENSA)
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list(APPEND sources "patches/esp_rom_longjmp.S")
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endif()
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idf_component_register(SRCS ${sources}
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INCLUDE_DIRS ${include_dirs}
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PRIV_REQUIRES ${private_required_comp})
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# Append a target linker script at the target-specific path,
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# only the 'name' part is different for each script
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function(rom_linker_script name)
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target_linker_script(${COMPONENT_LIB} INTERFACE "${target}/ld/${target}.rom.${name}.ld")
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endfunction()
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if(target STREQUAL "linux")
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# We need to disable some warnings due to the ROM code's printf implementation
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if(${CMAKE_CXX_COMPILER_VERSION} GREATER "7.0.0") # TODO: clang compatibility
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target_compile_options(${COMPONENT_LIB} PUBLIC -Wimplicit-fallthrough=0 -Wno-shift-count-overflow)
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endif()
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else()
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target_linker_script(${COMPONENT_LIB} INTERFACE "${target}/ld/${target}.rom.ld")
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rom_linker_script("api")
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rom_linker_script("libgcc")
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endif()
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if(BOOTLOADER_BUILD)
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if(target STREQUAL "esp32")
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rom_linker_script("newlib-funcs")
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if(NOT CONFIG_SPI_FLASH_ROM_DRIVER_PATCH)
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rom_linker_script("spiflash")
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endif()
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if(CONFIG_ESP32_REV_MIN_3)
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rom_linker_script("eco3")
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endif()
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elseif(target STREQUAL "esp32s2")
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rom_linker_script("newlib-funcs")
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rom_linker_script("spiflash")
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elseif(target STREQUAL "esp32s3")
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rom_linker_script("newlib")
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elseif(target STREQUAL "esp32c3")
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rom_linker_script("newlib")
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elseif(target STREQUAL "esp32h2")
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rom_linker_script("newlib")
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endif()
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else() # Regular app build
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if(target STREQUAL "esp32")
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rom_linker_script("newlib-data")
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rom_linker_script("syscalls")
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if(NOT CONFIG_SPIRAM_CACHE_WORKAROUND)
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rom_linker_script("newlib-funcs")
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if(NOT 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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rom_linker_script("newlib-time")
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# Include in newlib nano from ROM only if SPIRAM cache workaround is disabled
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# and sizeof(time_t) == 4
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if(CONFIG_NEWLIB_NANO_FORMAT)
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rom_linker_script("newlib-nano")
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endif()
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endif()
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endif()
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if(NOT CONFIG_SPI_FLASH_ROM_DRIVER_PATCH)
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rom_linker_script("spiflash")
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endif()
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if(CONFIG_ESP32_REV_MIN_3)
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rom_linker_script("eco3")
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endif()
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elseif(target STREQUAL "esp32s2")
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rom_linker_script("newlib-funcs")
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rom_linker_script("newlib-data")
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rom_linker_script("spiflash")
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if(NOT 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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if(CONFIG_NEWLIB_NANO_FORMAT)
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rom_linker_script("newlib-nano")
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endif()
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rom_linker_script("newlib-time")
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endif()
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# descirptors used by ROM code
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target_sources(${COMPONENT_LIB} PRIVATE "esp32s2/usb_descriptors.c")
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elseif(target STREQUAL "esp32s3")
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rom_linker_script("newlib")
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rom_linker_script("version")
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if(NOT 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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if(CONFIG_NEWLIB_NANO_FORMAT)
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rom_linker_script("newlib-nano")
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endif()
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rom_linker_script("newlib-time")
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endif()
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elseif(target STREQUAL "esp32c3")
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rom_linker_script("newlib")
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rom_linker_script("version")
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if(NOT 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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if(CONFIG_NEWLIB_NANO_FORMAT)
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rom_linker_script("newlib-nano")
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endif()
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rom_linker_script("newlib-time")
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endif()
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if(CONFIG_ESP32C3_REV_MIN_3)
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rom_linker_script("eco3")
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endif()
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elseif(target STREQUAL "esp32h2")
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rom_linker_script("newlib")
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rom_linker_script("version")
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if(CONFIG_NEWLIB_NANO_FORMAT)
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rom_linker_script("newlib-nano")
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endif()
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endif()
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if(CONFIG_IDF_TARGET_ARCH_XTENSA)
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target_link_libraries(${COMPONENT_LIB} INTERFACE "-Wl,--wrap=longjmp")
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endif()
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endif()
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if(target STREQUAL "esp32s2")
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target_sources(${COMPONENT_LIB} PRIVATE "esp32s2/usb_descriptors.c")
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endif()
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