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Add compiler cmake files for RISC-V (rv64gc) targets

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This adds the basic support for riscv64-unknown-elf compiler amd rv64gc ISA

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
This commit is contained in:
Jukka Laitinen 2021-04-30 11:01:56 +03:00 committed by Daniel Agar
parent 935253357a
commit 34de392425
2 changed files with 55 additions and 0 deletions
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11
platforms/nuttx/cmake/Platform/Generic-riscv64-unknown-elf-gcc-rv64gc.cmake Normal file
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if(CONFIG_ARCH_DPFPU)
message(STATUS "Enabling double FP precision hardware instructions")
set(cpu_flags "-march=rv64gc -mabi=lp64d -mcmodel=medany")
else()
set(cpu_flags "-march=rv64imac -mabi=lp64 -mcmodel=medany")
endif()
set(CMAKE_C_FLAGS "${cpu_flags}" CACHE STRING "" FORCE)
set(CMAKE_CXX_FLAGS "${cpu_flags}" CACHE STRING "" FORCE)
set(CMAKE_ASM_FLAGS "${cpu_flags} -D__ASSEMBLY__" CACHE STRING "" FORCE)

44
platforms/nuttx/cmake/Toolchain-riscv64-unknown-elf.cmake Normal file
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# riscv64-unknown-elf toolchain
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_VERSION 1)
set(triple riscv64-unknown-elf)
set(CMAKE_LIBRARY_ARCHITECTURE ${triple})
set(TOOLCHAIN_PREFIX ${triple})
set(CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}-gcc)
set(CMAKE_C_COMPILER_TARGET ${triple})
set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}-g++)
set(CMAKE_CXX_COMPILER_TARGET ${triple})
set(CMAKE_ASM_COMPILER ${TOOLCHAIN_PREFIX}-gcc)
# needed for test compilation
set(CMAKE_EXE_LINKER_FLAGS_INIT "--specs=nosys.specs")
# compiler tools
find_program(CMAKE_AR ${TOOLCHAIN_PREFIX}-gcc-ar)
find_program(CMAKE_GDB ${TOOLCHAIN_PREFIX}-gdb)
find_program(CMAKE_LD ${TOOLCHAIN_PREFIX}-ld)
find_program(CMAKE_LINKER ${TOOLCHAIN_PREFIX}-ld)
find_program(CMAKE_NM ${TOOLCHAIN_PREFIX}-gcc-nm)
find_program(CMAKE_OBJCOPY ${TOOLCHAIN_PREFIX}-objcopy)
find_program(CMAKE_OBJDUMP ${TOOLCHAIN_PREFIX}-objdump)
find_program(CMAKE_RANLIB ${TOOLCHAIN_PREFIX}-gcc-ranlib)
find_program(CMAKE_STRIP ${TOOLCHAIN_PREFIX}-strip)
set(CMAKE_FIND_ROOT_PATH get_file_component(${CMAKE_C_COMPILER} PATH))
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
# os tools
foreach(tool grep make)
string(TOUPPER ${tool} TOOL)
find_program(${TOOL} ${tool})
if(NOT ${TOOL})
message(FATAL_ERROR "could not find ${tool}")
endif()
endforeach()