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13. UltraSPARC Extended Instructions

ﬂoating-point/graphics code only). Pixel values are stored in single-precision

ﬂoating point registers and ﬁxed values are stored in double-precision ﬂoating-

point registers, unless otherwise speciﬁed.

13.5.1 Opcode Format

The graphics instruction set maps to the opcode space reserved for the Imple-

mentation-Dependent Instruction 1 (IMPDEP1) instructions.

Format (3):

13.5.2 Partitioned Add/Subtract Instructions

Format (3):

opcode opf operation

FPADD16

0 0101 0000

Four 16-bit add

FPADD16 S

0 0101 0001

Two 16-bit add

FPADD32

0 0101 0010

Two 32-bit add

FPADD32S

0 0101 0011

One 32-bit add

FPSUB16

0 0101 0100

Four 16-bit subtract

FPSUB16S

0 0101 0101

Two 16-bit subtract

FPSUB32

0 0101 0110

Two 32-bit subtract

FPSUB32S

0 0101 0111

One 32-bit subtract

Suggested Assembly Language Syntax

fpadd16

freg

rs1

freg

rs2

freg

fpadd16s

freg

rs1

freg

rs2

freg

fpadd32

freg

rs1

freg

rs2

freg

fpadd32s

freg

rs1

freg

rs2

freg

fpsub16

freg

rs1

freg

rs2

freg

fpsub16s

freg

rs1

freg

rs2

freg

fpsub32

freg

rs1

freg

rs2

freg

fpsub32s

freg

rs1

freg

rs2

freg

10 110110 rs2rd rs1

31 141924 18 13 02530 29 4

opf

10 110110 rs2rd rs1

31 141924 18 13 02530 29 4

opf

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Brand	Sun Microsystems
Model	UltraSPARC-I
Category	Computer Hardware
Language	English

Sun Microsystems UltraSPARC-I User Manual

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Sun Microsystems UltraSPARC-I Specifications