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[cmake] MakeObject: ensure embedded objects are null terminated

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This commit is contained in:
Geoffrey McRae 2024-01-26 18:05:01 +11:00
parent 7247fadad8
commit 5b3cc4cd48
1 changed files with 10 additions and 6 deletions
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16
cmake/MakeObject.cmake
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@ -4,17 +4,20 @@ function(make_object out_var)
foreach(in_f ${ARGN})
file(RELATIVE_PATH out_f ${CMAKE_CURRENT_SOURCE_DIR} "${CMAKE_CURRENT_SOURCE_DIR}/${in_f}")
set(out_h "${CMAKE_CURRENT_BINARY_DIR}/${out_f}.h")
set(out_f "${CMAKE_CURRENT_BINARY_DIR}/${out_f}.o")
set(out_f "${out_f}.o")
string(REGEX REPLACE "[/.-]" "_" sym_in "${in_f}")
add_custom_command(OUTPUT ${out_f}
COMMAND ${CMAKE_LINKER} -r -b binary -o ${out_f} "${in_f}"
COMMAND cp ${CMAKE_CURRENT_SOURCE_DIR}/${in_f} ${out_f}.tmp
COMMAND dd if=/dev/zero bs=1 count=1 of=${out_f}.tmp oflag=append conv=notrunc status=none
COMMAND ${CMAKE_LINKER} -r -b binary -o ${out_f} ${out_f}.tmp
COMMAND ${CMAKE_OBJCOPY} --rename-section .data=.rodata,CONTENTS,ALLOC,LOAD,READONLY,DATA ${out_f} ${out_f}
COMMAND ${CMAKE_OBJCOPY} --redefine-sym _binary_${sym_in}_start=b_${sym_in} ${out_f} ${out_f}
COMMAND ${CMAKE_OBJCOPY} --redefine-sym _binary_${sym_in}_end=b_${sym_in}_end ${out_f} ${out_f}
COMMAND ${CMAKE_OBJCOPY} --redefine-sym _binary_${sym_in}_o_tmp_start=b_${sym_in} ${out_f} ${out_f}
COMMAND ${CMAKE_OBJCOPY} --redefine-sym _binary_${sym_in}_o_tmp_end=b_${sym_in}_end ${out_f} ${out_f}
COMMAND ${CMAKE_OBJCOPY} --redefine-sym _binary_${sym_in}_o_tmp_size=b_${sym_in}_size ${out_f} ${out_f}
COMMAND ${CMAKE_OBJCOPY} --strip-symbol _binary_${sym_in}_size ${out_f} ${out_f}
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/${in_f}"
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "Creating object from ${in_f}"
VERBATIM
)
@ -34,9 +37,10 @@ function(make_object out_var)
endfunction()
function(make_defines in_file out_file)
file(RELATIVE_PATH rel_f ${CMAKE_CURRENT_SOURCE_DIR} "${in_file}")
add_custom_command(OUTPUT ${out_file}
COMMAND grep "^#define" "${in_file}" > "${out_file}"
DEPENDS ${in_file}
COMMENT "Creating #defines from ${in_file}"
COMMENT "Creating #defines from ${rel_f}"
)
endfunction()