cmake: Change data_file_to_c to data_file_embed_asm for objcopy compatibility
Now generates _binary_filename_start / _binary_filename_end as well as more useful naming.
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Angus Gratton
Angus Gratton
parent
b57843b66a
commit
2816cf1d67
82
tools/cmake/scripts/data_file_embed_asm.cmake
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82
tools/cmake/scripts/data_file_embed_asm.cmake
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@ -0,0 +1,82 @@
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#
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# Convert a file (text or binary) into an assembler source file suitable
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# for gcc. Designed to replicate 'objcopy' with more predictable
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# naming, and supports appending a null byte for embedding text as
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# a string.
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#
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# Designed to be run as a script with "cmake -P"
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#
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# Set variables DATA_FILE, SOURCE_FILE, FILE_TYPE when running this.
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#
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# If FILE_TYPE is set to STRING, a null byte is appended to DATA_FILE's contents
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# before SOURCE_FILE is created.
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#
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# If FILE_TYPE is unset (or any other value), DATA_FILE is copied
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# verbatim into SOURCE_FILE.
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#
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#
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if(NOT DATA_FILE)
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message(FATAL_ERROR "DATA_FILE for converting must be specified")
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endif()
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if(NOT SOURCE_FILE)
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message(FATAL_ERROR "SOURCE_FILE destination must be specified")
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endif()
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file(READ "${DATA_FILE}" data HEX)
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string(LENGTH "${data}" data_len)
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math(EXPR data_len "${data_len} / 2") # 2 hex bytes per byte
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if(FILE_TYPE STREQUAL "TEXT")
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set(data "${data}00") # null-byte termination
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endif()
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## Convert string of raw hex bytes to lines of hex bytes as gcc .byte expressions
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string(REGEX REPLACE "................................" ".byte \\0\n" data "${data}") # 16 bytes per line
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string(REGEX REPLACE "[^\n]+$" ".byte \\0\n" data "${data}") # last line
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string(REGEX REPLACE "[0-9a-f][0-9a-f]" "0x\\0, " data "${data}") # hex formatted C bytes
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string(REGEX REPLACE ", \n" "\n" data "${data}") # trim the last comma
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## Come up with C-friendly symbol name based on source file
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get_filename_component(source_filename "${DATA_FILE}" NAME)
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string(MAKE_C_IDENTIFIER "${source_filename}" varname)
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function(append str)
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file(APPEND "${SOURCE_FILE}" "${str}")
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endfunction()
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function(append_line str)
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append("${str}\n")
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endfunction()
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function(append_identifier symbol)
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append_line("\n.global ${symbol}")
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append("${symbol}:")
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if(${ARGC} GREATER 1) # optional comment
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append(" /* ${ARGV1} */")
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endif()
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append("\n")
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endfunction()
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file(WRITE "${SOURCE_FILE}" "/*")
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append_line(" * Data converted from ${DATA_FILE}")
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if(FILE_TYPE STREQUAL "TEXT")
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append_line(" * (null byte appended)")
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endif()
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append_line(" */")
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append_line(".data")
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append_identifier("${varname}")
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append_identifier("_binary_${varname}_start" "for objcopy compatibility")
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append("${data}")
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append_identifier("_binary_${varname}_end" "for objcopy compatibility")
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append_line("")
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if(FILE_TYPE STREQUAL "TEXT")
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append_identifier("${varname}_length" "not including null byte")
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else()
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append_identifier("${varname}_length")
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endif()
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append_line(".word ${data_len}")
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@ -1,56 +0,0 @@
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#
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# Convert a file (text or binary) into a C source file suitable
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# for gcc. Designed to replicate 'objcopy' with more predictable
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# naming, and supports appending a null byte for embedding text as
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# a string.
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#
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# Designed to be run as a script with "cmake -P"
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#
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# Set variables DATA_FILE, SOURCE_FILE, FILE_TYPE when running this.
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#
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# If FILE_TYPE is set to STRING, a null byte is appended to DATA_FILE's contents
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# before it is embedded.
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#
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# If FILE_TYPE is unset (or any other value), DATA_FILE is embedded
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# verbatim.
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#
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#
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if(NOT DATA_FILE)
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message(FATAL_ERROR "DATA_FILE for converting must be specified")
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endif()
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if(NOT SOURCE_FILE)
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message(FATAL_ERROR "SOURCE_FILE destination must be specified")
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endif()
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file(READ "${DATA_FILE}" data HEX)
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if(FILE_TYPE STREQUAL "TEXT")
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set(data "${data}00") # null-byte terimnation
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endif()
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## Convert string of raw hex bytes to lines of hex bytes in C array format
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string(REGEX REPLACE "................................" "\\0\n " data "${data}") # 16 bytes per line
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string(REGEX REPLACE "[0-9a-f][0-9a-f]" "0x\\0, " data "${data}") # hex formatted C bytes
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string(REGEX REPLACE ", $" "" data "${data}") # trim the last comma (cosmetic)
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## Come up with C-friendly name for file
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get_filename_component(source_filename "${DATA_FILE}" NAME)
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string(MAKE_C_IDENTIFIER "${source_filename}" varname)
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file(WRITE "${SOURCE_FILE}" "/*\n")
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file(APPEND "${SOURCE_FILE}" " * Data converted from ${DATA_FILE}\n")
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if(FILE_TYPE STREQUAL "TEXT")
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file(APPEND "${SOURCE_FILE}" " * (null byte appended)\n")
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endif()
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file(APPEND "${SOURCE_FILE}" " */\n")
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file(APPEND "${SOURCE_FILE}" "#include <stdlib.h>\n")
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file(APPEND "${SOURCE_FILE}" "#include <stddef.h>\n\n")
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file(APPEND "${SOURCE_FILE}" "const char ${varname}[] = {\n ${data}\n };\n")
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file(APPEND "${SOURCE_FILE}" "const size_t ${varname}_length = sizeof(${varname});\n\n")
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# Backwards compatibility, matches objcopy binary symbol names
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file(APPEND "${SOURCE_FILE}" "/* Backwards compatible names, match objcopy -I binary naming */\n")
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file(APPEND "${SOURCE_FILE}" "const char *_binary_${varname}_start = ${varname};\n")
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file(APPEND "${SOURCE_FILE}" "const char *_binary_${varname}_end = ${varname} + sizeof(${varname});\n")
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@ -106,15 +106,16 @@ function(target_add_binary_data target embed_file embed_type)
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get_filename_component(embed_file "${embed_file}" ABSOLUTE)
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get_filename_component(name "${embed_file}" NAME)
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set(embed_srcfile "${CMAKE_BINARY_DIR}/${name}.c")
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set(embed_srcfile "${CMAKE_BINARY_DIR}/${name}.S")
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add_custom_command(OUTPUT "${embed_srcfile}"
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COMMAND "${CMAKE_COMMAND}"
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-D "DATA_FILE=${embed_file}"
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-D "SOURCE_FILE=${embed_srcfile}"
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-D "FILE_TYPE=${embed_type}"
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-P "${IDF_PATH}/tools/cmake/scripts/data_file_to_c.cmake"
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-P "${IDF_PATH}/tools/cmake/scripts/data_file_embed_asm.cmake"
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MAIN_DEPENDENCY "${embed_file}"
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DEPENDENCIES "${IDF_PATH}/tools/cmake/scripts/data_file_embed_asm.cmake"
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WORKING_DIRECTORY "${CMAKE_BINARY_DIR}")
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set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES "${embed_srcfile}")
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