WO2009016592A3 - Electronic device - Google Patents

Electronic device Download PDF

Info

Publication number
WO2009016592A3
WO2009016592A3 PCT/IB2008/053053 IB2008053053W WO2009016592A3 WO 2009016592 A3 WO2009016592 A3 WO 2009016592A3 IB 2008053053 W IB2008053053 W IB 2008053053W WO 2009016592 A3 WO2009016592 A3 WO 2009016592A3
Authority
WO
WIPO (PCT)
Prior art keywords
electronic device
microprocessor
management unit
memory management
mmu
Prior art date
Application number
PCT/IB2008/053053
Other languages
French (fr)
Other versions
WO2009016592A2 (en
Inventor
Markus Harnisch
Gerwin Hermann
Heimo Bergler
Original Assignee
Nxp Bv
Markus Harnisch
Gerwin Hermann
Heimo Bergler
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 Nxp Bv, Markus Harnisch, Gerwin Hermann, Heimo Bergler filed Critical Nxp Bv
Publication of WO2009016592A2 publication Critical patent/WO2009016592A2/en
Publication of WO2009016592A3 publication Critical patent/WO2009016592A3/en

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
    • G06F9/46—Multiprogramming arrangements
    • G06F9/461—Saving or restoring of program or task context
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
    • G06F21/79—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in semiconductor storage media, e.g. directly-addressable memories
    • 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
    • G06F9/3877—Concurrent instruction execution, e.g. pipeline, look ahead using a slave processor, e.g. coprocessor
    • G06F9/3879—Concurrent instruction execution, e.g. pipeline, look ahead using a slave processor, e.g. coprocessor for non-native instruction execution, e.g. executing a command; for Java instruction set
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2105—Dual mode as a secondary aspect

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Storage Device Security (AREA)
  • Telephone Function (AREA)

Abstract

The invention relates to an electronic device (1) with a microprocessor (2) and a memory management unit (MMU, MPU) (3) wherein in case that call and return instructions between the microprocessor (2) and the memory management unit (3) indicate a context switch two handshake channels are used.
PCT/IB2008/053053 2007-08-02 2008-07-30 Electronic device WO2009016592A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07113662.6 2007-08-02
EP07113662 2007-08-02

Publications (2)

Publication Number Publication Date
WO2009016592A2 WO2009016592A2 (en) 2009-02-05
WO2009016592A3 true WO2009016592A3 (en) 2009-04-02

Family

ID=40280866

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/053053 WO2009016592A2 (en) 2007-08-02 2008-07-30 Electronic device

Country Status (1)

Country Link
WO (1) WO2009016592A2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899275A (en) * 1985-02-22 1990-02-06 Intergraph Corporation Cache-MMU system
US5283881A (en) * 1991-01-22 1994-02-01 Westinghouse Electric Corp. Microcoprocessor, memory management unit interface to support one or more coprocessors

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899275A (en) * 1985-02-22 1990-02-06 Intergraph Corporation Cache-MMU system
US5283881A (en) * 1991-01-22 1994-02-01 Westinghouse Electric Corp. Microcoprocessor, memory management unit interface to support one or more coprocessors

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"32 - BIT COMPUTER DISIGN USING THE 68020, 68881 AND 68851", MICROPROCESSORS AND MICROSYSTEMS, IPC BUSINESS PRESS LTD. LONDON, GB, vol. 12, no. 6, 1 July 1988 (1988-07-01), pages 345 - 351, XP000076208, ISSN: 0141-9331 *
ARJAN BINK ET AL: "ARM996HS: The First Licensable, Clockless 32-Bit Processor Core", IEEE MICRO, IEEE SERVICE CENTER, LOS ALAMITOS, CA, US, vol. 27, no. 2, 1 March 2007 (2007-03-01), pages 58 - 68, XP011190029, ISSN: 0272-1732 *
DEITEL H M ED - DEITEL H M ET AL: "THE DESIGN OF OS/2", DESIGN OF OS/2, READING, ADDISON WESLEY, US, 1 January 1992 (1992-01-01), pages 33,38 - 40, XP002069884 *

Also Published As

Publication number Publication date
WO2009016592A2 (en) 2009-02-05

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