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.

This commit is contained in:

Justin C. Miller

2018-09-12 20:59:08 -07:00

parent c2f85ce61b

commit 62c559043d

13 changed files with 233 additions and 136 deletions

									
										1

src/kernel/cpu.cpp
									
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				@@ -52,6 +52,7 @@ cpu_id::cpu_id()

				}

				cpu_id::regs

				cpu_id::get(uint32_t leaf, uint32_t sub) const

				{

Pause syscall and int 0xee interrupt syscalls

1 src/kernel/cpu.cpp Unescape Escape View File

Pause syscall and `int 0xee` interrupt syscalls

1

src/kernel/cpu.cpp

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