diff options
| author | Kinsey Moore <kinsey.moore@oarcorp.com> | 2020-12-07 12:10:26 -0600 |
|---|---|---|
| committer | Joel Sherrill <joel@rtems.org> | 2020-12-11 17:16:01 -0600 |
| commit | 9c407619c72bd97b19d96092d20dc48ce9bb0256 (patch) | |
| tree | 915c16b592303582af9b7b021475d83034a84c22 /cpu-supplement/aarch64.rst | |
| parent | c-user: Generate Timer Manager documentation (diff) | |
| download | rtems-docs-9c407619c72bd97b19d96092d20dc48ce9bb0256.tar.bz2 | |
aarch64: Update interrupt details
Diffstat (limited to '')
| -rw-r--r-- | cpu-supplement/aarch64.rst | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/cpu-supplement/aarch64.rst b/cpu-supplement/aarch64.rst index 9e74d6b..a102817 100644 --- a/cpu-supplement/aarch64.rst +++ b/cpu-supplement/aarch64.rst @@ -104,7 +104,10 @@ Interrupt Stack --------------- The board support package must initialize the interrupt stack. The memory for -the stacks is usually reserved in the linker script. +the stacks is usually reserved in the linker script. The interrupt stack pointer +is stored in the EL0 stack pointer and is accessed by switching to SP0 mode +at the beginning of interrupt calls and back to SPx mode after completion of +interrupt calls using the `spsel` instruction. Default Fatal Error Processing ============================== |