1msim
2Target
3Use simulator runtime.
4
5mtiny-printf
6Target Mask(TINY_PRINTF)
7Use a lightweight configuration of printf and puts to reduce code size. For single-threaded applications, not requiring reentrant I/O only. Requires Newlib Nano IO.
8
9masm-hex
10Target Mask(ASM_HEX)
11Force assembly output to always use hex constants.
12
13mmcu=
14Target ToLower Joined RejectNegative Var(target_mcu)
15Specify the MCU to build for.
16
17mwarn-mcu
18Target Var(msp430_warn_mcu) Init(1)
19Warn if an MCU name is unrecognized or conflicts with other options (default: on).
20
21mwarn-devices-csv
22Target Var(msp430_warn_devices_csv) Init(1)
23Warn if devices.csv is not found or there are problem parsing it (default: on).
24
25mcpu=
26Target Joined RejectNegative Var(target_cpu) ToLower Enum(msp430_cpu_types) Init(MSP430_CPU_MSP430X_DEFAULT)
27Specify the ISA to build for: msp430, msp430x, msp430xv2.
28
29Enum
30Name(msp430_cpu_types) Type(enum msp430_cpu_types)
31
32EnumValue
33Enum(msp430_cpu_types) String(msp430) Value(MSP430_CPU_MSP430) Canonical
34
35EnumValue
36Enum(msp430_cpu_types) String(430) Value(MSP430_CPU_MSP430)
37
38EnumValue
39Enum(msp430_cpu_types) String(msp430x) Value(MSP430_CPU_MSP430X) Canonical
40
41EnumValue
42Enum(msp430_cpu_types) String(430x) Value(MSP430_CPU_MSP430X)
43
44EnumValue
45Enum(msp430_cpu_types) String(msp430xv2) Value(MSP430_CPU_MSP430XV2) Canonical
46
47EnumValue
48Enum(msp430_cpu_types) String(430xv2) Value(MSP430_CPU_MSP430XV2)
49
50mlarge
51Target Mask(LARGE) RejectNegative
52Select large model - 20-bit addresses/pointers.
53
54msmall
55Target InverseMask(LARGE) RejectNegative
56Select small model - 16-bit addresses/pointers (default).
57
58mrelax
59Target
60Optimize opcode sizes at link time.
61
62mOs
63Target Undocumented Mask(OPT_SPACE)
64
65minrt
66Target Mask(MINRT) RejectNegative
67Use a minimum runtime (no static initializers or ctors) for memory-constrained devices.
68
69HeaderInclude
70config/msp430/msp430-opts.h
71
72mhwmult=
73Target Joined RejectNegative ToLower Var(msp430_hwmult_type) Enum(msp430_hwmult_types) Init(MSP430_HWMULT_AUTO)
74Specify the type of hardware multiply to support.
75
76Enum
77Name(msp430_hwmult_types) Type(enum msp430_hwmult_types)
78
79EnumValue
80Enum(msp430_hwmult_types) String(none) Value(MSP430_HWMULT_NONE)
81
82EnumValue
83Enum(msp430_hwmult_types) String(auto) Value(MSP430_HWMULT_AUTO)
84
85EnumValue
86Enum(msp430_hwmult_types) String(16bit) Value(MSP430_HWMULT_SMALL)
87
88EnumValue
89Enum(msp430_hwmult_types) String(32bit) Value(MSP430_HWMULT_LARGE)
90
91EnumValue
92Enum(msp430_hwmult_types) String(f5series) Value(MSP430_HWMULT_F5SERIES)
93
94mcode-region=
95Target Joined RejectNegative ToLower Var(msp430_code_region) Enum(msp430_regions) Init(MSP430_REGION_LOWER)
96Specify whether functions should be placed into the lower or upper memory regions, or if they should be shuffled between the regions (either) for best fit (default: lower).
97
98mdata-region=
99Target Joined RejectNegative ToLower Var(msp430_data_region) Enum(msp430_regions) Init(MSP430_REGION_LOWER)
100Specify whether variables should be placed into the lower or upper memory regions, or if they should be shuffled between the regions (either) for best fit (default: lower).
101
102muse-lower-region-prefix
103Target Mask(USE_LOWER_REGION_PREFIX)
104Add the .lower prefix to section names when compiling with -m{code,data}-region=lower (disabled by default).
105
106Enum
107Name(msp430_regions) Type(enum msp430_regions)
108
109EnumValue
110Enum(msp430_regions) String(none) Value(MSP430_REGION_ANY)
111
112EnumValue
113Enum(msp430_regions) String(either) Value(MSP430_REGION_EITHER)
114
115EnumValue
116Enum(msp430_regions) String(lower) Value(MSP430_REGION_LOWER)
117
118EnumValue
119Enum(msp430_regions) String(upper) Value(MSP430_REGION_UPPER)
120
121msilicon-errata=
122Target Joined RejectNegative ToLower
123Passes on a request to the assembler to enable fixes for various silicon errata.
124
125msilicon-errata-warn=
126Target Joined RejectNegative ToLower
127Passes on a request to the assembler to warn about various silicon errata.
128
129mdevices-csv-loc=
130Target Joined Var(msp430_devices_csv_loc) RejectNegative
131The path to devices.csv.  The GCC driver can normally locate devices.csv itself
132and pass this option to the compiler, so the user shouldn't need to pass this.
133
134mmax-inline-shift=
135Target RejectNegative Joined UInteger IntegerRange(0,65) Var(msp430_max_inline_shift) Init(65)
136For shift operations by a constant amount, which require an individual instruction to shift by one
137position, set the maximum number of inline shift instructions (maximum value 64) to emit instead of using the corresponding __mspabi helper function.
138The default value is 4.
139