Control flow management for execution of dynamically translated non-native code in a virtual hosting environment
US8819648B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2012 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Aug 29, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45583
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Execution of non-native operating system images within a virtualized computer system is improved by providing a mechanism for retrieving translated code physical addresses corresponding to un-translated code branch target addresses using a host code map. Hardware acceleration mechanisms, such as content-accessible look-up tables, directory hardware, or processor instructions that operate on tables in memory can be provided to accelerate the performance of the translation mechanism. The virtual address of the branch instruction target is used as a key to look up a corresponding record that contains a physical address of the translated code page containing the translated branch instruction target, and execution is directed to the physical address obtained from the record, once the physical page containing the translated code corresponding the target address is loaded in memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.