GB2349252B - An apparatus and method for detecting and decompressing instructions from a variable-length compressed instruction set - Google Patents

An apparatus and method for detecting and decompressing instructions from a variable-length compressed instruction set

Info

Publication number
GB2349252B
GB2349252B GB0018379A GB0018379A GB2349252B GB 2349252 B GB2349252 B GB 2349252B GB 0018379 A GB0018379 A GB 0018379A GB 0018379 A GB0018379 A GB 0018379A GB 2349252 B GB2349252 B GB 2349252B
Authority
GB
United Kingdom
Prior art keywords
variable
detecting
instruction set
compressed instruction
length compressed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB0018379A
Other versions
GB0018379D0 (en
GB2349252A (en
Inventor
Frank Worrell
Hartvig Ekner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LSI Corp
Original Assignee
LSI Logic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/659,709 external-priority patent/US5794010A/en
Priority claimed from US08/661,003 external-priority patent/US5896519A/en
Priority claimed from US08/659,708 external-priority patent/US5905893A/en
Application filed by LSI Logic Corp filed Critical LSI Logic Corp
Priority to GB0028856A priority Critical patent/GB2354354B/en
Priority claimed from GB9825726A external-priority patent/GB2329495B/en
Publication of GB0018379D0 publication Critical patent/GB0018379D0/en
Publication of GB2349252A publication Critical patent/GB2349252A/en
Application granted granted Critical
Publication of GB2349252B publication Critical patent/GB2349252B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/3017—Runtime instruction translation, e.g. macros
    • G06F9/30178—Runtime instruction translation, e.g. macros of compressed or encrypted instructions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30145—Instruction analysis, e.g. decoding, instruction word fields
    • G06F9/30156—Special purpose encoding of instructions, e.g. Gray coding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30145—Instruction analysis, e.g. decoding, instruction word fields
    • G06F9/3016—Decoding the operand specifier, e.g. specifier format
    • G06F9/30167—Decoding the operand specifier, e.g. specifier format of immediate specifier, e.g. constants
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30181—Instruction operation extension or modification
    • G06F9/30189—Instruction operation extension or modification according to execution mode, e.g. mode flag

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Executing Machine-Instructions (AREA)
GB0018379A 1996-06-10 1997-06-10 An apparatus and method for detecting and decompressing instructions from a variable-length compressed instruction set Expired - Fee Related GB2349252B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0028856A GB2354354B (en) 1996-06-10 1997-06-10 An apparatus and method for detecting and decompressing instructions form a variable-length compressed instruction set

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US66102796A 1996-06-10 1996-06-10
US08/659,709 US5794010A (en) 1996-06-10 1996-06-10 Method and apparatus for allowing execution of both compressed instructions and decompressed instructions in a microprocessor
US08/661,003 US5896519A (en) 1996-06-10 1996-06-10 Apparatus for detecting instructions from a variable-length compressed instruction set having extended and non-extended instructions
US08/659,708 US5905893A (en) 1996-06-10 1996-06-10 Microprocessor adapted for executing both a non-compressed fixed length instruction set and a compressed variable length instruction set
GB9825726A GB2329495B (en) 1996-06-10 1997-06-10 An apparatus and method for detecting and decompressing instructions from a variable-length compressed instruction set

Publications (3)

Publication Number Publication Date
GB0018379D0 GB0018379D0 (en) 2000-09-13
GB2349252A GB2349252A (en) 2000-10-25
GB2349252B true GB2349252B (en) 2001-02-14

Family

ID=27517481

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0018379A Expired - Fee Related GB2349252B (en) 1996-06-10 1997-06-10 An apparatus and method for detecting and decompressing instructions from a variable-length compressed instruction set

Country Status (1)

Country Link
GB (1) GB2349252B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2366643B (en) * 2000-05-25 2002-05-01 Siroyan Ltd Methods of compressing instructions for processors
GB2478726B (en) * 2010-03-15 2013-12-25 Advanced Risc Mach Ltd Mapping between registers used by multiple instruction sets
GB2540971B (en) 2015-07-31 2018-03-14 Advanced Risc Mach Ltd Graphics processing systems
CN111381877B (en) * 2018-12-28 2022-12-02 上海寒武纪信息科技有限公司 Decompress instruction decoding method, data processing method, decoder and data processing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4437149A (en) * 1980-11-17 1984-03-13 International Business Machines Corporation Cache memory architecture with decoding
JPH07121352A (en) * 1993-10-21 1995-05-12 Canon Inc Arithmetic processor
GB2284492A (en) * 1993-12-06 1995-06-07 Graeme Roy Smith Data processor with instruction decompression unit
GB2289353A (en) * 1994-05-03 1995-11-15 Advanced Risc Mach Ltd Data processing with multiple instruction sets.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4437149A (en) * 1980-11-17 1984-03-13 International Business Machines Corporation Cache memory architecture with decoding
JPH07121352A (en) * 1993-10-21 1995-05-12 Canon Inc Arithmetic processor
GB2284492A (en) * 1993-12-06 1995-06-07 Graeme Roy Smith Data processor with instruction decompression unit
GB2289353A (en) * 1994-05-03 1995-11-15 Advanced Risc Mach Ltd Data processing with multiple instruction sets.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
14 Annual Int. Symp. on Computer Architecture, Conf. Proc., 1987, IEEE, pp 309-319 *

Also Published As

Publication number Publication date
GB0018379D0 (en) 2000-09-13
GB2349252A (en) 2000-10-25

Similar Documents

Publication Publication Date Title
GB2308938B (en) Method and apparatus for operating a communication device
AU7799994A (en) Apparatus and method for using compressed codes
GB2274403B (en) Apparatus for removing moisture from a hot compressed gas
ZA962797B (en) A method and an apparatus for analysing a material
EP0896066A4 (en) Method and apparatus for manufacturing reduced iron
SG72766A1 (en) Method and apparatus for processing resist
GB2311607B (en) Method and apparatus for determining the course of a machine
GB2314485B (en) A method of testing the integrity of radio apparatus and a system for performing the same
EP0696003A3 (en) A method and an apparatus for document processing
HK1026082A1 (en) An apparatus and a method for keyboard encoding
GB2329495B (en) An apparatus and method for detecting and decompressing instructions from a variable-length compressed instruction set
GB9726410D0 (en) A method and apparatus on a textile-processing machine for achieving
GB2349252B (en) An apparatus and method for detecting and decompressing instructions from a variable-length compressed instruction set
GB2317494B (en) Apparatus and method for dry etching
EP0760698A4 (en) Apparatus and method for providing an antigravitational force
GB2354354B (en) An apparatus and method for detecting and decompressing instructions form a variable-length compressed instruction set
GB2317281B (en) A method and apparatus for frequency control
GB9622476D0 (en) Switching apparatus and method of performing a switching operation on a switching device
PL318721A1 (en) Method of obtaining a limestone fraction and apparatus therefor
AUPO178496A0 (en) Method and apparatus for monitoring ground vibration and air-blast
GB9415413D0 (en) Method and apparatus for video decompression
GB9603695D0 (en) Method and apparatus for monitoring a varying magnetic field
GB9600716D0 (en) A method and an apparatus for drawing three-dimensioal stereo-pairs
GB2317843B (en) An apparatus and a method for bending a component
GB9417832D0 (en) A method and apparatus for processing an analogue signal

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20140610