MSP430 IAR C/C++ Compiler reference guide - Rice University

Intrinsic functions__low_power_mode_nSyntaxvoid __low_power_mode_n(void);Description Enters a MSP430 low power mode, where n can be one of 0–4.__low_power_mode_off_on_exitSyntaxDescriptionvoid __low_power_mode_off_on_exit(void);Turns off the low power mode when a monitor or interrupt function returns. Thisintrinsic function is only available in interrupt and monitor functions.__no_operationSyntaxDescriptionvoid __no_operation(void);Inserts a NOP instruction.__op_codeSyntaxDescriptionvoid __op_code(unsigned short);Emits the 16-bit value into the instruction stream for the current function by inserting aDC16 constant.__set_interrupt_stateSyntaxDescriptionsvoid __set_interrupt_state(__istate_t);Restores the interrupt state by setting the value returned by the__get_interrupt_state function.For information about the __istate_t type, see __get_interrupt_state, page 221.Part 2. Compiler reference223