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50 Altera Corporation
32-Bit Instruction Set
EXT8s
Byte-Extract (Static)
Operation:
RA ← (0x00.00.00 :
bn
RA) where n = IMM2
Assembler Syntax: EXT8s %rA,IMM2
Example: EXT8s %g6,3 ; %g6 gets the 3rd byte of itself
Description: Extracts one of the four bytes in RA. The byte to-be-extracted is chosen by the
immediate value IMM2 (byte 3 being the most-significant byte of RA). The
selected byte is written into bits 7..0 of RA, and the more-significant bits 31..8 are
set to zero.
Condition Codes: Flags: Unaffected
Instruction Format: Ri2u
Instruction Fields: A = Register index of operand RA
IMM2 = 2-bit immediate value
1514131211109876543210
0 11101 000 IMM2 A
NVZC
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