DE69427672T2 - Befehlscachespeicher für Befehle mit variabler Byteslänge - Google Patents

Befehlscachespeicher für Befehle mit variabler Byteslänge

Info

Publication number
DE69427672T2
DE69427672T2 DE69427672T DE69427672T DE69427672T2 DE 69427672 T2 DE69427672 T2 DE 69427672T2 DE 69427672 T DE69427672 T DE 69427672T DE 69427672 T DE69427672 T DE 69427672T DE 69427672 T2 DE69427672 T2 DE 69427672T2
Authority
DE
Germany
Prior art keywords
instructions
instruction cache
byte length
variable byte
variable
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
DE69427672T
Other languages
English (en)
Other versions
DE69427672D1 (de
Inventor
David B Witt
Michael D Goddard
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.)
Advanced Micro Devices Inc
Original Assignee
Advanced Micro Devices Inc
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
Application filed by Advanced Micro Devices Inc filed Critical Advanced Micro Devices Inc
Application granted granted Critical
Publication of DE69427672D1 publication Critical patent/DE69427672D1/de
Publication of DE69427672T2 publication Critical patent/DE69427672T2/de
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
    • G06F9/38—Concurrent instruction execution, e.g. pipeline, look ahead
    • G06F9/3818—Decoding for concurrent execution
    • G06F9/382—Pipelined decoding, e.g. using predecoding
    • 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
    • G06F9/30149—Instruction analysis, e.g. decoding, instruction word fields of variable length instructions
    • G06F9/30152—Determining start or end of instruction; determining instruction length
    • 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
    • G06F9/30174—Runtime instruction translation, e.g. macros for non-native instruction set, e.g. Javabyte, legacy code
    • 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
    • G06F9/38—Concurrent instruction execution, e.g. pipeline, look ahead
    • G06F9/3802—Instruction prefetching
    • G06F9/3816—Instruction alignment, e.g. cache line crossing
DE69427672T 1993-10-29 1994-09-20 Befehlscachespeicher für Befehle mit variabler Byteslänge Expired - Fee Related DE69427672T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/145,905 US5689672A (en) 1993-10-29 1993-10-29 Pre-decoded instruction cache and method therefor particularly suitable for variable byte-length instructions

Publications (2)

Publication Number Publication Date
DE69427672D1 DE69427672D1 (de) 2001-08-16
DE69427672T2 true DE69427672T2 (de) 2002-06-20

Family

ID=22515063

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69427672T Expired - Fee Related DE69427672T2 (de) 1993-10-29 1994-09-20 Befehlscachespeicher für Befehle mit variabler Byteslänge

Country Status (4)

Country Link
US (2) US5689672A (de)
EP (1) EP0651322B1 (de)
JP (1) JPH07182162A (de)
DE (1) DE69427672T2 (de)

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Also Published As

Publication number Publication date
US5970235A (en) 1999-10-19
JPH07182162A (ja) 1995-07-21
US5689672A (en) 1997-11-18
DE69427672D1 (de) 2001-08-16
EP0651322A1 (de) 1995-05-03
EP0651322B1 (de) 2001-07-11

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