Implementation of multi-tasking on a digital signal processor with a hardware stack
US9841994B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2015 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Apr 29, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to the implementation for implementing multi-tasking on a digital signal processor. For that purpose blocking functions are arranged such that they do not make use of a processor's hardware stack. Respective function calls are replaced with a piece of inline assembly code, which instead performs a branch to the correct routine for carrying out said function. If a blocking condition of the blocking function is encountered, a task switch can be done to resume another task. While the hardware stack is not used when a task switch might have to occur, mixed-up contents of the hardware stack among function calls performed by different tasks are avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.