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Extensible Firmware Interface Specification

J-2 12/01/02 Version 1.10

Table J-1. EBC Virtual Machine Opcode Summary (continued)

Opcode Description

0x1A EXTNDB[32|64] {@}R

1

, {@}R

2

{Index16|Immed16}

0x1B EXTNDW[32|64] {@}R

1

,{@}R

2

{Index16|Immed16}

0x1C EXTNDD[32|64] {@}R

1

,{@}R

2

{Index16|Immed16}

0x1D MOVbw {@}R

1

{Index16}, {@}R

2

{Index16}

0x1E MOVww {@}R

1

{Index16}, {@}R

2

{Index16}

0x1F MOVdw {@}R

1

{Index16}, {@}R

2

{Index16}

0x20 MOVqw {@}R

1

{Index16}, {@}R

2

{Index16}

0x21 MOVbd {@}R

1

{Index32}, {@}R

2

{Index32}

0x22 MOVwd {@}R

1

{Index32}, {@}R

2

{Index32}

0x23 MOVdd {@}R

1

{Index32}, {@}R

2

{Index32}

0x24 MOVqd {@}R

1

{Index32}, {@}R

2

{Index32}

0x25 MOVsnw {@}R

1

{Index16}, {@}R

2

{Index16|Immed16}

0x26 MOVsnd {@}R

1

{Index32}, {@}R

2

{Index32|Immed32}

0x27 Reserved

0x28 MOVqq {@}R

1

{Index64}, {@}R

2

{Index64}

0x29 LOADSP [Flags], R

2

0x2A STORESP R

1

, [IP|Flags]

0x2B PUSH[32|64] {@}R

1

{Index16|Immed16}

0x2C POP[32|64] {@}R

1

{Index16|Immed16}

0x2D CMPI[32|64][w|d]eq {@}R

1

{Index16}, Immed16|Immed32

0x2E CMPI[32|64][w|d]lte {@}R

1

{Index16}, Immed16|Immed32

0x2F CMPI[32|64][w|d]gte {@}R

1

{Index16}, Immed16|Immed32

0x30 CMPI[32|64][w|d]ulte {@}R

1

{Index16}, Immed16|Immed32

0x31 CMPI[32|64][w|d]ugte {@}R

1

{Index16}, Immed16|Immed32

0x32 MOVnw {@}R

1

{Index16}, {@}R

2

{Index16}

0x33 MOVnd {@}R

1

{Index32}, {@}R

2

{Index32}

0x34 Reserved

0x35 PUSHn {@}R

1

{Index16|Immed16}

0x36 POPn {@}R

1

{Index16|Immed16}

0x37 MOVI[b|w|d|q][w|d|q] {@}R

1

{Index16}, Immed16|32|64

0x38 MOVIn[w|d|q] {@}R

1

{Index16}, Index16|32|64

0x39 MOVREL[w|d|q] {@}R

1

{Index16}, Immed16|32|64

0x3A Reserved

0x3B Reserved

0x3C Reserved

0x3D Reserved

0x3E Reserved

0x3F Reserved

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