RTEMS 4.5.1-pre3 On-Line Library

Interrupt Processing Interrupt Stack Frame

RTEMS Hewlett Packard PA-RISC Applications Supplement

4.3: Interrupt Stack Frame

The PA-RISC architecture does not alter the stack while processing interrupts. However, RTEMS does save information on the stack as part of processing an interrupt. This following shows the format of the Interrupt Stack Frame for the PA-RISC as defined by RTEMS:

               +------------------------+
               |    Interrupt Context   | 0xXXX
               +------------------------+
               |     Integer Context    | 0xXXX
               +------------------------+
               | Floating Point Context | 0xXXX
               +------------------------+

RTEMS Hewlett Packard PA-RISC Applications Supplement