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cmake: group arch specific handling #162

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cmake: group arch specific handling #162

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63 changes: 36 additions & 27 deletions cmake-tool/helpers/environment_flags.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -46,36 +46,45 @@ macro(add_default_compilation_options)

if(KernelArchX86)
add_compile_options(-mtls-direct-seg-refs)
endif()

if(KernelSel4ArchAarch32)
# The arm-gnu-eabi* uses TPIDRURO as the default tls register.
# If this isn't what the kernel is configured to, generate function calls for
# thread pointer access.
if (NOT KernelArmTLSRegTPIDRURO)
add_compile_options(-mtp=soft)
endif()
endif()
elseif(KernelArchARM)
if(KernelSel4ArchAarch32)
add_compile_options(-mno-unaligned-access)
# The arm-gnu-eabi* uses TPIDRURO as the default tls register.
# If this isn't what the kernel is configured to, generate function
# calls for thread pointer access.
if (NOT KernelArmTLSRegTPIDRURO)
add_compile_options(-mtp=soft)
endif()

# Don't allow unaligned data store/load instructions as this will cause an alignment
# fault on any seL4 memory regions that are uncached as the mapping attributes the kernel
# uses causes alignment checks to be enabled.
if(KernelSel4ArchAarch64)
add_compile_options(-mstrict-align)
if(NOT CMAKE_C_COMPILER_VERSION)
message(FATAL_ERROR "CMAKE_C_COMPILER_VERSION is not set")
endif()
# special handling for GCC 10 and above
if(
((CMAKE_C_COMPILER_ID STREQUAL "GNU")
AND (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL "10.0.0"))
OR ((CMAKE_C_COMPILER_ID STREQUAL "Clang")
AND (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL "12.0.0"))
)
add_compile_options(-mno-outline-atomics)
elseif(KernelSel4ArchAarch64)
# Don't allow unaligned data store/load instructions as this will
# cause an alignment fault on any seL4 memory regions that are
# uncached as the mapping attributes the kernel uses causes
# alignment checks to be enabled.
add_compile_options(-mstrict-align)
if(NOT CMAKE_C_COMPILER_VERSION)
message(FATAL_ERROR "CMAKE_C_COMPILER_VERSION is not set")
endif()
# special handling for GCC 10 and above
if(
((CMAKE_C_COMPILER_ID STREQUAL "GNU")
AND (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL "10.0.0"))
OR ((CMAKE_C_COMPILER_ID STREQUAL "Clang")
AND (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL "12.0.0"))
)
add_compile_options(-mno-outline-atomics)
endif()

else()
message(FATAL_ERROR "unknown ARM KernelSel4Arch '${KernelSel4Arch}'")
endif()
elseif(KernelSel4ArchAarch32)
add_compile_options(-mno-unaligned-access)

elseif(KernelArchRiscV)
# nothing special

else()
message(FATAL_ERROR "unknown KernelArch '${KernelArch}'")
endif()
endmacro()

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