6. Arm Cortex Processor Variants Supported by tiarmclang

The tiarmclang compiler toolchain supports development of applications that are to be loaded and run on one of the following Arm Cortex processor variants (applicable -mcpu and floating-point support options are listed for each):

• Cortex-m0

  -mcpu=cortex-m0
  

• Cortex-m0plus

  -mcpu=cortex-m0plus
  

• Cortex-m3

  -mcpu=cortex-m3
  

• Cortex-m4

  With FPv4SPD16 support:

  -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
  

  Without FPv4SPD16 support:

  -mcpu=cortex-m4 -mfloat-abi=soft
  

• Cortex-r4

  Thumb mode with VFPv3D16

  -mcpu=cortex-r4 -mthumb -mfloat-abi=hard -mfpu=vfpv3-d16
  

  Thumb mode without VFPv3D16

  -mcpu=cortex-r4 -mthumb -mfloat-abi=soft
  

  Arm mode with VFPv3D16

  -mcpu=cortex-r4 -marm -mfloat-abi=hard -mfpu=vfpv3-d16
  

  Arm mode without VFPv3D16

  -mcpu=cortex-r4 -marm -mfloat-abi=soft
  

• Cortex-r5

  Thumb mode with VFPv3D16

  -mcpu=cortex-r5 -mthumb -mfloat-abi=hard -mfpu=vfpv3-d16
  

  Thumb mode without VFPv3D16

  -mcpu=cortex-r5 -mthumb -mfloat-abi=soft
  

  Arm mode with VFPv3D16

  -mcpu=cortex-r5 -marm -mfloat-abi=hard -mfpu=vfpv3-d16
  

  Arm mode without VFPv3D16

  -mcpu=cortex-r5 -marm -mfloat-abi=soft
  

The tiarmclang compiler will default to the Cortex-M4 (“-mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16”) processor if you do not explicitly specify an -mcpu or -march option on the compiler command-line.