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arm: cortex-m: add FPU option for v8.M without DSP

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With respect to the mapping between the CPU variant
and the FPU we add an entry for Cortex-M v8-M CPU
variants without DSP. This should cover the case
of a Mainline Cortex-M which implements the Floating
Point extension but not the DSP extension.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
This commit is contained in:
Ioannis Glaropoulos 2021-05-17 15:43:53 +02:00 • committed by Anas Nashif
commit 102fd5d41c
1 changed files with 4 additions and 3 deletions
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7
cmake/compiler/gcc/target_arm.cmake
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@ -18,9 +18,10 @@ else()
set(PRECISION_TOKEN sp-) set(PRECISION_TOKEN sp-)
endif() endif()
set(FPU_FOR_cortex-m4 fpv4-${PRECISION_TOKEN}d16) set(FPU_FOR_cortex-m4 fpv4-${PRECISION_TOKEN}d16)
set(FPU_FOR_cortex-m7 fpv5-${PRECISION_TOKEN}d16) set(FPU_FOR_cortex-m7 fpv5-${PRECISION_TOKEN}d16)
set(FPU_FOR_cortex-m33 fpv5-${PRECISION_TOKEN}d16) set(FPU_FOR_cortex-m33 fpv5-${PRECISION_TOKEN}d16)
set(FPU_FOR_cortex-m33+nodsp fpv5-${PRECISION_TOKEN}d16)
if(CONFIG_FPU) if(CONFIG_FPU)
list(APPEND TOOLCHAIN_C_FLAGS -mfpu=${FPU_FOR_${GCC_M_CPU}}) list(APPEND TOOLCHAIN_C_FLAGS -mfpu=${FPU_FOR_${GCC_M_CPU}})