6d4bce81ae
This commit updates the Zephyr build system to support specifying advanced floating-point compilation options derived from the newly introduced unified floating-point configurations. The following changes are introduced by this commit: 1. Specify architecture floating-point option to the `-mcpu` flag. 2. Specify floating-point unit (FPU) type using the `-mfpu` flag. Note that the `-march` flag is not specified separately because the `-mcpu` flag provides more detailed architecture options and this makes the `-march` flag redundant. 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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# Determines what argument to give to -mfpu= based on the
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# KConfig'uration and sets this to GCC_M_FPU
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if(CONFIG_FPU)
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if("${ARCH}" STREQUAL "arm")
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if(CONFIG_CPU_AARCH32_CORTEX_R)
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if(CONFIG_CPU_CORTEX_R4 OR CONFIG_CPU_CORTEX_R5) # VFPv3
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if(CONFIG_VFP_FEATURE_DOUBLE_PRECISION)
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set(GCC_M_FPU vfpv3-d16)
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elseif(CONFIG_VFP_FEATURE_SINGLE_PRECISION)
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set(GCC_M_FPU vfpv3xd)
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endif()
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if(CONFIG_VFP_FEATURE_HALF_PRECISION)
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set(GCC_M_FPU ${GCC_M_FPU}-fp16)
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endif()
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endif()
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elseif(CONFIG_CPU_CORTEX_M)
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# Defines a mapping from GCC_M_CPU to FPU
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if(CONFIG_CPU_HAS_FPU_DOUBLE_PRECISION)
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set(PRECISION_TOKEN)
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else()
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set(PRECISION_TOKEN sp-)
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endif()
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set(FPU_FOR_cortex-m4 fpv4-${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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set(FPU_FOR_cortex-m33+nodsp fpv5-${PRECISION_TOKEN}d16)
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set(FPU_FOR_cortex-m55 auto)
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set(FPU_FOR_cortex-m55+nomve.fp auto)
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set(FPU_FOR_cortex-m55+nomve auto)
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set(FPU_FOR_cortex-m55+nodsp auto)
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set(GCC_M_FPU ${FPU_FOR_${GCC_M_CPU}})
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endif()
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endif()
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endif() #CONFIG_FPU
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