JPS57209547A - Collecting device for program executing carrier information - Google Patents

Collecting device for program executing carrier information

Info

Publication number
JPS57209547A
JPS57209547A JP56093850A JP9385081A JPS57209547A JP S57209547 A JPS57209547 A JP S57209547A JP 56093850 A JP56093850 A JP 56093850A JP 9385081 A JP9385081 A JP 9385081A JP S57209547 A JPS57209547 A JP S57209547A
Authority
JP
Japan
Prior art keywords
instruction
address
circuit
branch instruction
branch
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.)
Pending
Application number
JP56093850A
Other languages
Japanese (ja)
Inventor
Akinori Honda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56093850A priority Critical patent/JPS57209547A/en
Publication of JPS57209547A publication Critical patent/JPS57209547A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/36—Preventing errors by testing or debugging software

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Advance Control (AREA)
  • Debugging And Monitoring (AREA)

Abstract

PURPOSE:To collect a correct branch instruction address, by discriminating types of past instructions stored, when an instruction reading address is not consecutive to an instruction reading address just before and a branch instruction is detected. CONSTITUTION:Registers 1-6 always stores an instruction address and an instruction while transferring them in order. An output of an instruction address storage register being an instruction reading address just before added by (1) to the output of an addition circuit 12 and the instruction reading address at present are compared at an exclusive OR circuit 13. Decoders 7 and 8 decode the content of instruction storage registers 5 and 6, specific branch instruction patterns are detected, and the content of instruction address storage registers 2 and 3 representing a correct branch instruction address through AND circuits 9 and 10, an OR circuit 11 and an AND circuit 15 is selected according to the detection of the branch instruction pattern and is outputted to a branch instruction exeucting address output line 26 for collection.
JP56093850A 1981-06-19 1981-06-19 Collecting device for program executing carrier information Pending JPS57209547A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56093850A JPS57209547A (en) 1981-06-19 1981-06-19 Collecting device for program executing carrier information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56093850A JPS57209547A (en) 1981-06-19 1981-06-19 Collecting device for program executing carrier information

Publications (1)

Publication Number Publication Date
JPS57209547A true JPS57209547A (en) 1982-12-22

Family

ID=14093880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56093850A Pending JPS57209547A (en) 1981-06-19 1981-06-19 Collecting device for program executing carrier information

Country Status (1)

Country Link
JP (1) JPS57209547A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59132046A (en) * 1983-01-18 1984-07-30 Fujitsu Ltd Address tracing system
JPS62257560A (en) * 1986-04-30 1987-11-10 Nec Corp Saving system for content of main storage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59132046A (en) * 1983-01-18 1984-07-30 Fujitsu Ltd Address tracing system
JPS6248859B2 (en) * 1983-01-18 1987-10-15 Fujitsu Ltd
JPS62257560A (en) * 1986-04-30 1987-11-10 Nec Corp Saving system for content of main storage
JPH0740236B2 (en) * 1986-04-30 1995-05-01 日本電気株式会社 Main memory contents saving method

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