Implementation of multi-tasking on a digital signal processor with a hardware stack
US9021239B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 2006 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Jan 29, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The disclosure relates to the implementation of multi-tasking on a digital signal processor. 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. Whilst 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.