Dynamic optimizing object code translator for architecture emulation and dynamic optimizing object code translation method
US6463582B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1998 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Oct 21, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/45504
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optimizing object code translation system and method perform dynamic compilation and translation of a target object code on a source operating system while performing optimization. Compilation and optimization of the target code is dynamically executed in real time. A compiler performs analysis and optimizations that improve emulation relative to template-based translation and interpretation such that a host processor which processes larger order instructions, such as 32-bit instructions, may emulate a target processor which processes smaller order instructions, such as 16-bit and 8-bit instructions. The optimizing object code translator does not require knowledge of a static program flow graph or memory locations of target instructions prior to run time. In addition, the optimizing object code translator does not require knowledge of the location of all join points into the target object code prior to execution. During program execution, a translator records branch operations. The logging of information identifies instructions and instruction join points. When a number of times a branch operation is executed exceeds a threshold, the destination of the branch becomes a seed for …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.