The assembler has several types of predefined symbols.
$, the dollar-sign character, represents the current value of the section program counter (SPC).
In addition, the following predefined processor symbolic constants are available:
| Symbol name | Description |
|---|---|
| .MSP430(1) | Always set to 1 |
| .MSP430X(1) | Set to 1 if the --silicon_version=mspx option is specified, otherwise 0 |
| .MSP4619(1) | Set to 1 if the --silicon_version=mspx option is specified, otherwise 0 |
| _ _LARGE_CODE_MODEL_ _ | Set to 1 if the --code_model=large option is specified; otherwise 0 |
| _ _LARGE_DATA_MODEL_ _ | Set to 1 if the --data_model=large or −−data_model=restricted option is specified, otherwise 0 |
| _ _LONG_PTRDIFF_T_ _ | Set to 1(indicates ptrdiff_t is a long) if the --data_model=large option is specified, otherwise 0 |
| _ _UNSIGNED_LONG_SIZE_T_ _ | Set to 1 (indicates size_t is an unsigned long) if the --data_model=large option is specified, otherwise 0 |
| _ _TI_EABI_ _ | Set to 1 if EABI is enabled. EABI is now the only supported ABI; see Section 4.4. |