30 lines
1.1 KiB
C
30 lines
1.1 KiB
C
#ifndef MANGO_X86_64_THREAD_H_
|
|
#define MANGO_X86_64_THREAD_H_
|
|
|
|
#include <mango/sched.h>
|
|
|
|
struct ml_cpu_context;
|
|
|
|
/* switch from one thread to another. the stack of the `to` thread must have
|
|
* been prepared in one of two ways:
|
|
* 1) a previous call to ml_thread_switch where it was the `from` thread.
|
|
* 2) a call to ml_thread_prepare_kernel_context
|
|
* the switch occurs entirely with kernel mode. a further return from an
|
|
* interrupt context is then used to return to usermode if necessary.
|
|
*/
|
|
extern void ml_thread_switch(struct thread *from, struct thread *to);
|
|
|
|
/* perform the initial transition to userspace. the stack must be prepared using
|
|
* ml_thread_prepare_user_context before this function can be used */
|
|
extern void ml_thread_switch_user(void);
|
|
/* prepare the stack so that ml_thread_switch can jump to the specified IP/SP */
|
|
extern void ml_thread_prepare_kernel_context(uintptr_t ip, uintptr_t *sp);
|
|
/* prepare the stack so that ml_thread_switch_user can jump to usermode
|
|
* with the specified IP/user SP */
|
|
extern void ml_thread_prepare_user_context(
|
|
virt_addr_t ip,
|
|
virt_addr_t user_sp,
|
|
virt_addr_t *kernel_sp);
|
|
|
|
#endif
|