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https://github.com/zephyrproject-rtos/zephyr
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0bd86f3604
This commit introduces the `COMPILER_ISA_THUMB2` symbol to allow choosing either the ARM or Thumb instruction set for C code compilation. In addition, this commit introduces the `ASSEMBLER_ISA_THUMB2` helper symbol to specify the default target instruction set for the assembler. Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
42 lines
1.2 KiB
CMake
42 lines
1.2 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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if(CONFIG_ARM64)
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list(APPEND TOOLCHAIN_C_FLAGS
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-mcpu=${GCC_M_CPU}
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)
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list(APPEND TOOLCHAIN_LD_FLAGS
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-mcpu=${GCC_M_CPU}
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)
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else()
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list(APPEND TOOLCHAIN_C_FLAGS -mcpu=${GCC_M_CPU})
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list(APPEND TOOLCHAIN_LD_FLAGS -mcpu=${GCC_M_CPU})
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if(CONFIG_COMPILER_ISA_THUMB2)
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list(APPEND TOOLCHAIN_C_FLAGS -mthumb)
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list(APPEND TOOLCHAIN_LD_FLAGS -mthumb)
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endif()
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# Defines a mapping from GCC_M_CPU to FPU
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if(CONFIG_CPU_HAS_FPU_DOUBLE_PRECISION)
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set(PRECISION_TOKEN)
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else()
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set(PRECISION_TOKEN sp-)
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endif()
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set(FPU_FOR_cortex-m4 fpv4-${PRECISION_TOKEN}d16)
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set(FPU_FOR_cortex-m7 fpv5-${PRECISION_TOKEN}d16)
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set(FPU_FOR_cortex-m33 fpv5-${PRECISION_TOKEN}d16)
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if(CONFIG_FLOAT)
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list(APPEND TOOLCHAIN_C_FLAGS -mfpu=${FPU_FOR_${GCC_M_CPU}})
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list(APPEND TOOLCHAIN_LD_FLAGS -mfpu=${FPU_FOR_${GCC_M_CPU}})
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if (CONFIG_FP_SOFTABI)
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list(APPEND TOOLCHAIN_C_FLAGS -mfloat-abi=softfp)
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list(APPEND TOOLCHAIN_LD_FLAGS -mfloat-abi=softfp)
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elseif(CONFIG_FP_HARDABI)
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list(APPEND TOOLCHAIN_C_FLAGS -mfloat-abi=hard)
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list(APPEND TOOLCHAIN_LD_FLAGS -mfloat-abi=hard)
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endif()
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endif()
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endif()
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