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Instruction Overview
RTS, RTI, RTX, RTN, RTE (Return)
General Form
RTS, RTI, RTX, RTN, RTE
Syntax
RTS ;
// Return from Subroutine (a)
RTI ;
// Return from Interrupt (a)
RTX ;
// Return from Exception (a)
RTN ;
// Return from NMI (a)
RTE ;
// Return from Emulation (a)
Instruction Length
In the syntax, comment (a) identifies 16-bit instruction length.
Functional Description
The Return instruction forces a return from a subroutine, maskable or
NMI interrupt routine, exception routine, or emulation routine (see
Table
7-1).
Flags Affected
None
Required Mode
Table 7-2
identifies the modes required by the Return instruction.
Parallel Issue
This instruction cannot be issued in parallel with other instructions.
7-10
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
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