GB2329495B - 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 setInfo
- Publication number
- GB2329495B GB2329495B GB9825726A GB9825726A GB2329495B GB 2329495 B GB2329495 B GB 2329495B GB 9825726 A GB9825726 A GB 9825726A GB 9825726 A GB9825726 A GB 9825726A GB 2329495 B GB2329495 B GB 2329495B
- 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
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
- G06F9/30149—Instruction analysis, e.g. decoding, instruction word fields of variable length 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
- G06F9/3016—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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0018379A GB2349252B (en) | 1996-06-10 | 1997-06-10 | An apparatus and method for detecting and decompressing instructions from a variable-length compressed instruction set |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US66102796A | 1996-06-10 | 1996-06-10 | |
US08/659,708 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 |
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 |
PCT/US1997/009984 WO1997048041A1 (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 |
---|---|
GB9825726D0 GB9825726D0 (en) | 1999-01-20 |
GB2329495A GB2329495A (en) | 1999-03-24 |
GB2329495B true GB2329495B (en) | 2000-09-20 |
Family
ID=27505302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9825726A Expired - Fee Related GB2329495B (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 (4)
Country | Link |
---|---|
JP (1) | JP2000512409A (en) |
AU (1) | AU3480897A (en) |
GB (1) | GB2329495B (en) |
WO (1) | WO1997048041A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6189090B1 (en) * | 1997-09-17 | 2001-02-13 | Sony Corporation | Digital signal processor with variable width instructions |
SE9704476L (en) * | 1997-12-02 | 1999-06-23 | Ericsson Telefon Ab L M | Extended instruction decoding |
EP0942357A3 (en) | 1998-03-11 | 2000-03-22 | Matsushita Electric Industrial Co., Ltd. | Data processor compatible with a plurality of instruction formats |
WO2000008554A1 (en) * | 1998-08-07 | 2000-02-17 | Koninklijke Philips Electronics N.V. | Apparatus with program memory and processor |
US7676653B2 (en) * | 2007-05-09 | 2010-03-09 | Xmos Limited | Compact instruction set encoding |
US9710277B2 (en) * | 2010-09-24 | 2017-07-18 | Intel Corporation | Processor power management based on class and content of instructions |
US9372696B2 (en) | 2013-10-18 | 2016-06-21 | Via Technologies, Inc. | Microprocessor with compressed and uncompressed microcode memories |
US9361097B2 (en) | 2013-10-18 | 2016-06-07 | Via Technologies, Inc. | Selectively compressed microcode |
GB2586258A (en) | 2019-08-15 | 2021-02-17 | 1Inspiries Tech Ltd | Efficient processor machine instruction handling |
US11204768B2 (en) | 2019-11-06 | 2021-12-21 | Onnivation Llc | Instruction length based parallel instruction demarcator |
Citations (4)
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. |
-
1997
- 1997-06-10 GB GB9825726A patent/GB2329495B/en not_active Expired - Fee Related
- 1997-06-10 WO PCT/US1997/009984 patent/WO1997048041A1/en active Application Filing
- 1997-06-10 AU AU34808/97A patent/AU3480897A/en not_active Abandoned
- 1997-06-10 JP JP10501756A patent/JP2000512409A/en active Pending
Patent Citations (4)
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)
Title |
---|
14 Annual Int. Symp.on Computer Architecture, Conf. Proc., 1987, IEEE, pp 309-319. * |
Also Published As
Publication number | Publication date |
---|---|
AU3480897A (en) | 1998-01-07 |
JP2000512409A (en) | 2000-09-19 |
WO1997048041A1 (en) | 1997-12-18 |
GB9825726D0 (en) | 1999-01-20 |
GB2329495A (en) | 1999-03-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20140610 |