Commit Graph

2 Commits

Author SHA1 Message Date
Justin C. Miller
1308864061 MSR and syscall changes
- Moved MSR code to separate files with an enum class
- Implemented syscall_enable in C++ using new MSR calls
2018-09-15 00:37:49 -07:00
Justin C. Miller
62c559043d Pause syscall and int 0xee interrupt syscalls
The syscall/sysret instructions don't swap stacks. This was bad but
passable until syscalls caused the scheduler to run, and scheduling a
task that paused due to interrupt.

Adding a new (hopefully temporary) syscall interrupt `int 0xee` to allow
me to test syscalls without stack issues before I tackle the
syscall/sysret issue.

Also implemented a basic `pause` syscall that causes the calling process
to become unready. Because nothing can wake a process yet, it never
returns.
2018-09-12 20:59:08 -07:00