Condition code flag emulation for program code conversion
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 12, 2008
Grant Date -
Aug 12, 2004
app pub date -
Feb 6, 2003
filing date -
Feb 6, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An emulator (30) allows subject code (10) written for a subject processor (12) having subject processor registers (14) and condition code flags (16) to run in a non-compatible computing environment (2). The emulator (30) identifies and records parameters of instructions in the subject code (10) that affect status of the subject condition code flags (16). Then, when an instruction in the subject code (10) is encountered, such as a branch or jump, that uses the flag status to make a decision, the flag status is resolved from the recorded instruction parameters. Advantageously, emulation overhead is substantially reduced.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully