Move Signed Constant Into Register and Sign Extend MVK
3-183 Instruction SetSPRU733
Move Signed Constant Into Register and Sign Extend
MVK
Syntax MVK (.unit) cst, dst
.unit = .S1 or .S2
Compatibility C62x, C64x, C67x, and C67x+ CPU
Opcode
31 29 28 27 23 22 7 6543210
creg z dst cst16 0 1 0 1 0 s p
3 1 5 16 1 1
Opcode map field used... For operand type... Unit
cst16
dst
scst16
sint
.S1, .S2
Description The 16-bit signed constant, cst, is sign extended and placed in dst.
In most cases, the C6000 assembler and linker issue a warning or an error
when a constant is outside the range supported by the instruction. In the case
of MVK .S, a warning is issued whenever the constant is outside the signed
16-bit range, −32768 to 32767 (or FFFF 8000h to 0000 7FFFh).
For example:
MVK .S1 0x00008000X, A0
will generate a warning; whereas:
MVK .S1 0xFFFF8000, A0
will not generate a warning.
Execution if (cond) scst → dst
else nop
Pipeline
Stage
E1
Read
Written dst
Unit in use
.S
Pipeline
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