msim
Target
Use simulator runtime.

masm-hex
Target Mask(ASM_HEX)
Force assembly output to always use hex constants.

mmcu=
Target Report ToLower Joined RejectNegative Var(target_mcu)
Specify the MCU to build for.

mwarn-mcu
Target Report Var(msp430_warn_mcu) Init(1)
Warn if an MCU name is unrecognised or conflicts with other options (default: on).

mcpu=
Target Report Joined RejectNegative Var(target_cpu)
Specify the ISA to build for: msp430, msp430x, msp430xv2.

mlarge
Target Report Mask(LARGE) RejectNegative
Select large model - 20-bit addresses/pointers.

msmall
Target Report InverseMask(LARGE) RejectNegative
Select small model - 16-bit addresses/pointers (default).

mrelax
Target Report
Optimize opcode sizes at link time.

mOs
Target Undocumented Mask(OPT_SPACE)

minrt
Target Report Mask(MINRT) RejectNegative
Use a minimum runtime (no static initializers or ctors) for memory-constrained devices.

HeaderInclude
config/msp430/msp430-opts.h

mhwmult=
Target Joined RejectNegative Report ToLower Var(msp430_hwmult_type) Enum(msp430_hwmult_types) Init(AUTO)
Specify the type of hardware multiply to support.

Enum
Name(msp430_hwmult_types) Type(enum msp430_hwmult_types)

EnumValue
Enum(msp430_hwmult_types) String(none) Value(NONE)

EnumValue
Enum(msp430_hwmult_types) String(auto) Value(AUTO)

EnumValue
Enum(msp430_hwmult_types) String(16bit) Value(SMALL)

EnumValue
Enum(msp430_hwmult_types) String(32bit) Value(LARGE)

EnumValue
Enum(msp430_hwmult_types) String(f5series) Value(F5SERIES)

mcode-region=
Target Joined RejectNegative Report ToLower Var(msp430_code_region) Enum(msp430_regions) Init(ANY)
Specify whether functions should be placed into low or high memory.

mdata-region=
Target Joined RejectNegative Report ToLower Var(msp430_data_region) Enum(msp430_regions) Init(ANY)
Specify whether variables should be placed into low or high memory.

Enum
Name(msp430_regions) Type(enum msp430_regions)

EnumValue
Enum(msp430_regions) String(none) Value(ANY)

EnumValue
Enum(msp430_regions) String(either) Value(EITHER)

EnumValue
Enum(msp430_regions) String(lower) Value(LOWER)

EnumValue
Enum(msp430_regions) String(upper) Value(UPPER)

msilicon-errata=
Target Joined RejectNegative Report ToLower
Passes on a request to the assembler to enable fixes for various silicon errata.

msilicon-errata-warn=
Target Joined RejectNegative Report ToLower
Passes on a request to the assembler to warn about various silicon errata.