Summary of intrinsic functions

In this section:

The intrinsic functions provide direct access to low-level processor operations and can be very useful in, for example, time-critical routines. The intrinsic functions compile into inline code, either as a single instruction or as a short sequence of instructions.

To use intrinsic functions in an application, include the header file intrinsics.h.

Note that the intrinsic function names start with double underscores, for example:

__disable_interrupt

This table summarizes the intrinsic functions:

Intrinsic function	Description
`__BSH`	Inserts a `BSH` instruction
`__BSW`	Inserts a `BSW` instruction
`__c_base`	Returns the value of the base register for constant data when ROPI is enabled
`__CAXI`	Inserts a `CAXI` instruction
`__CEILF_DL`	Inserts a `CEILF.DL` instruction
`__CEILF_DUL`	Inserts a `CEILF.DUL` instruction
`__CEILF_DUW`	Inserts a `CEILF.DUW` instruction
`__CEILF_DW`	Inserts a `CEILF.DW` instruction
`__CEILF_SL`	Inserts a `CEILF.SL` instruction
`__CEILF_SUL`	Inserts a `CEILF.SUL` instruction
`__CEILF_SUW`	Inserts a `CEILF.SUW` instruction
`__CEILF_SW`	Inserts a `CEILF.SW` instruction
`__DBCP`	Inserts a `DBCP` instruction
`__DBHVTRAP`	Inserts a `DBHVTRAP` instruction
`__DBPUSH`	Pushes a register set to the debug interface
`__DBRET`	Inserts a `DBRET` instruction
`__DBTAG`	Generates a debug tag
`__DBTRAP`	Inserts a `DBTRAP` instruction
`__disable_interrupt`	Disables interrupts
`__DST`	Inserts a `DST` instruction
`__enable_interrupt`	Enables interrupts
`__EST`	Inserts an `EST` instruction
`__FLOORF_DL`	Inserts a `FLOORF.DL` instruction
`__FLOORF_DUL`	Inserts a `FLOORF.DUL` instruction
`__FLOORF_DUW`	Inserts a `FLOORF.DUW` instruction
`__FLOORF_DW`	Inserts a `FLOORF.DW` instruction
`__FLOORF_SL`	Inserts a `FLOORF.SL` instruction
`__FLOORF_SUL`	Inserts a `FLOORF.SUL` instruction
`__FLOORF_SUW`	Inserts a `FLOORF.SUW` instruction
`__FLOORF_SW`	Inserts a `FLOORF.SW` instruction
`__get_interrupt_state`	Returns the interrupt state
`__halt`	Inserts a `HALT` instruction
`__HSW`	Inserts an `HSW` instruction
`__LDL`	Inserts an `LDL` instruction
`__LDSR`	Inserts an `LDSR` instruction
`__MAC`	Executes MAC operations on 32-bit signed data values and returns a 64-bit signed value
`__MACU`	Executes MAC operations on 32-bit unsigned data values and returns a 64-bit unsigned value
`__MADDF`	Inserts an `MADDF` instruction
`__MSUBF`	Inserts an `MSUBF` instruction
`__NMADDF`	Inserts an `NMADDF` instruction
`__NMSUBF`	Inserts an `NMSUBF` instruction
`__no_operation`	Inserts a `NOP` instruction
`__RECIPF_D`	Inserts a `RECIPF.D` instruction
`__RECIPF_S`	Inserts a `RECIPF.S` instruction
`__RMTRAP`	Inserts an `RMTRAP` instruction
`__ROUNDF_DL`	Inserts a `ROUNDF.DL` instruction
`__ROUNDF_DUL`	Inserts a `ROUNDF.DUL` instruction
`__ROUNDF_DUW`	Inserts a `ROUNDF.DUW` instruction
`__ROUNDF_DW`	Inserts a `ROUNDF.DW` instruction
`__ROUNDF_SL`	Inserts a `ROUNDF.SL` instruction
`__ROUNDF_SUL`	Inserts a `ROUNDF.SUL` instruction
`__ROUNDF_SUW`	Inserts a `ROUNDF.SUW` instruction
`__ROUNDF_SW`	Inserts a `ROUNDF.SW` instruction
`__saturated_add`	Inserts a `SATADD` instruction
`__saturated_sub`	Inserts a `SATSUB` instruction
`__SCH0L`	Inserts an `SCH0L` instruction
`__SCH0R`	Inserts an `SCH0R` instruction
`__SCH1L`	Inserts an `SCH1L` instruction
`__SCH1R`	Inserts an `SCH1R` instruction
`__set_interrupt_state`	Restores the interrupt state
`__snooze`	Inserts a `SNOOZE` instruction
`__SQRTF_D`	Inserts an `SQRTF.D` instruction
`__SQRTF_S`	Inserts an `SQRTF.S` instruction
`__STC`	Inserts an `STC` instruction
`__STSR`	Inserts an `STSR` instruction
`__SYNCE`	Inserts a `SYNCE` instruction
`__SYNCI`	Inserts a `SYNCI` instruction
`__SYNCM`	Inserts a `SYNCM` instruction
`__SYNCP`	Inserts a `SYNCP` instruction
`__TLBAI`	Inserts a `TLBAI` instruction
`__TLBR`	Inserts a `TLBR` instruction
`__TLBS`	Inserts a `TLBS` instruction
`__TLBVI`	Inserts a `TLBVI` instruction
`__TLBW`	Inserts a `TLBW` instruction
`__TRNCF_DL`	Inserts a `TRNCF.DL` instruction
`__TRNCF_DUL`	Inserts a `TRNCF.DUL` instruction
`__TRNCF_DUW`	Inserts a `TRNCF.DUW` instruction
`__TRNCF_DW`	Inserts a `TRNCF.DW` instruction
`__TRNCF_SL`	Inserts a `TRNCF.SL` instruction
`__TRNCF_SUL`	Inserts a `TRNCF.SUL` instruction
`__TRNCF_SUW`	Inserts a `TRNCF.SUW` instruction
`__TRNCF_SW`	Inserts a `TRNCF.SW` instruction
`__upper_mul64`	Returns the 32 most significant bits of a 64-bit multiplication of two 32-bit long values.

Table 82. Intrinsic functions summary (Continued)

IAR Embedded Workbench for RH850 3.20.x

Summary of intrinsic functions

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