diff options
Diffstat (limited to 'cpu/interrupts/software/execution.txt')
| -rw-r--r-- | cpu/interrupts/software/execution.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/cpu/interrupts/software/execution.txt b/cpu/interrupts/software/execution.txt new file mode 100644 index 0000000..0cad31b --- /dev/null +++ b/cpu/interrupts/software/execution.txt @@ -0,0 +1,8 @@ +When calling a software interrupt: + R0 gets overwritten with the current PR + R1 gets overwritten with a pointer of the same segment as IP, pointing to the next instruction + PR is set to all 1s + +When returning via iretp: + PR is set to R0 + Execution jumps to R1 |