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GB2461848B - Data processing apparatus having a number of operating modes - Google Patents

Data processing apparatus having a number of operating modes

Info

Publication number
GB2461848B
GB2461848B GB0812662.5A GB0812662A GB2461848B GB 2461848 B GB2461848 B GB 2461848B GB 0812662 A GB0812662 A GB 0812662A GB 2461848 B GB2461848 B GB 2461848B
Authority
GB
United Kingdom
Prior art keywords
processing apparatus
data processing
operating modes
modes
operating
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.)
Active
Application number
GB0812662.5A
Other versions
GB0812662D0 (en
GB2461848A (en
Inventor
Alistair Guy Morfey
Karl Leighton Swepson
Peter Giles Lloyd
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.)
Cambridge Consultants Ltd
Original Assignee
Cambridge Consultants Ltd
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 Cambridge Consultants Ltd filed Critical Cambridge Consultants Ltd
Priority to GB0812662.5A priority Critical patent/GB2461848B/en
Publication of GB0812662D0 publication Critical patent/GB0812662D0/en
Priority to US13/003,432 priority patent/US9645949B2/en
Priority to PCT/GB2009/001309 priority patent/WO2010004240A1/en
Priority to PCT/GB2009/001313 priority patent/WO2010004242A2/en
Priority to PCT/GB2009/001314 priority patent/WO2010004243A2/en
Priority to PCT/GB2009/001318 priority patent/WO2010004245A1/en
Publication of GB2461848A publication Critical patent/GB2461848A/en
Application granted granted Critical
Publication of GB2461848B publication Critical patent/GB2461848B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F9/30098—Register arrangements
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F9/30098—Register arrangements
    • G06F9/30101—Special purpose registers
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 or look ahead
    • G06F9/3861—Recovery, e.g. branch miss-prediction, exception handling
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G06F9/4812—Task transfer initiation or dispatching by interrupt, e.g. masked

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)
GB0812662.5A 2008-07-10 2008-07-10 Data processing apparatus having a number of operating modes Active GB2461848B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB0812662.5A GB2461848B (en) 2008-07-10 2008-07-10 Data processing apparatus having a number of operating modes
PCT/GB2009/001314 WO2010004243A2 (en) 2008-07-10 2009-05-27 Interrupt processing
PCT/GB2009/001309 WO2010004240A1 (en) 2008-07-10 2009-05-27 Data processing apparatus, for example using modes
PCT/GB2009/001313 WO2010004242A2 (en) 2008-07-10 2009-05-27 Data processing apparatus, for example using vector pointers
US13/003,432 US9645949B2 (en) 2008-07-10 2009-05-27 Data processing apparatus using privileged and non-privileged modes with multiple stacks
PCT/GB2009/001318 WO2010004245A1 (en) 2008-07-10 2009-05-27 Processor with push instruction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0812662.5A GB2461848B (en) 2008-07-10 2008-07-10 Data processing apparatus having a number of operating modes

Publications (3)

Publication Number Publication Date
GB0812662D0 GB0812662D0 (en) 2008-08-20
GB2461848A GB2461848A (en) 2010-01-20
GB2461848B true GB2461848B (en) 2013-01-30

Family

ID=39722085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0812662.5A Active GB2461848B (en) 2008-07-10 2008-07-10 Data processing apparatus having a number of operating modes

Country Status (1)

Country Link
GB (1) GB2461848B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2723682C (en) 2008-05-05 2014-09-23 Raytheon Company Methods and apparatus for detection/classification of radar targets including birds and other hazards
ES2634111T3 (en) 2009-04-17 2017-09-26 Raytheon Company Method and apparatus for integration of distributed sensors and surveillance radar in airports to mitigate blind spots
GB2500844B (en) * 2010-03-15 2014-03-12 Advanced Risc Mach Ltd Apparatus and method for handling exception events
GB2478733B (en) * 2010-03-15 2013-08-14 Advanced Risc Mach Ltd Apparatus and method for handling exception events
KR102406340B1 (en) * 2018-02-26 2022-06-13 에스케이하이닉스 주식회사 Electronic apparatus and operating method thereof
US12481504B2 (en) * 2020-12-22 2025-11-25 Intel Corporation Apparatus and method for secure instruction set execution, emulation, monitoring, and prevention

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5557766A (en) * 1991-10-21 1996-09-17 Kabushiki Kaisha Toshiba High-speed processor for handling multiple interrupts utilizing an exclusive-use bus and current and previous bank pointers to specify a return bank
EP0762272A2 (en) * 1995-09-01 1997-03-12 Sony Corporation Microprocessors and apparatus including same
US6088783A (en) * 1996-02-16 2000-07-11 Morton; Steven G DPS having a plurality of like processors controlled in parallel by an instruction word, and a control processor also controlled by the instruction word
JP2000250762A (en) * 1999-02-26 2000-09-14 Matsushita Electric Ind Co Ltd Microcomputer
US6598151B1 (en) * 1998-10-06 2003-07-22 Texas Instruments Incorporated Stack Pointer Management
US20070266374A1 (en) * 2006-05-11 2007-11-15 Arm Limited Stack memory selection upon exception in a data processing system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5557766A (en) * 1991-10-21 1996-09-17 Kabushiki Kaisha Toshiba High-speed processor for handling multiple interrupts utilizing an exclusive-use bus and current and previous bank pointers to specify a return bank
EP0762272A2 (en) * 1995-09-01 1997-03-12 Sony Corporation Microprocessors and apparatus including same
US6088783A (en) * 1996-02-16 2000-07-11 Morton; Steven G DPS having a plurality of like processors controlled in parallel by an instruction word, and a control processor also controlled by the instruction word
US6598151B1 (en) * 1998-10-06 2003-07-22 Texas Instruments Incorporated Stack Pointer Management
JP2000250762A (en) * 1999-02-26 2000-09-14 Matsushita Electric Ind Co Ltd Microcomputer
US20070266374A1 (en) * 2006-05-11 2007-11-15 Arm Limited Stack memory selection upon exception in a data processing system

Also Published As

Publication number Publication date
GB0812662D0 (en) 2008-08-20
GB2461848A (en) 2010-01-20

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