lunaix-os/includes/lunaix/hart_state.h

   1 #ifndef __LUNAIX_CONTEXT_H
   2 #define __LUNAIX_CONTEXT_H
   3
   4 struct exec_param;
   5 struct regcontext;
   6 struct hart_state;
   7
   8 #include <lunaix/compiler.h>
   9 #include <asm/hart.h>
  10
  11 struct hart_transition
  12 {
  13     ptr_t inject;
  14     struct {
  15         struct hart_state state;
  16         struct exec_param eret;
  17     } transfer;
  18 };
  19
  20 bool
  21 install_hart_transition(ptr_t vm_mnt, struct hart_transition* tctx);
  22
  23 void
  24 hart_prepare_transition(struct hart_transition* tctx,
  25                       ptr_t kstack_tp, ptr_t ustack_pt,
  26                       ptr_t entry, bool to_user);
  27
  28 static inline void
  29 hart_user_transfer(struct hart_transition* tctx,
  30                             ptr_t kstack_tp, ptr_t ustack_pt,
  31                             ptr_t entry)
  32 {
  33     hart_prepare_transition(tctx, kstack_tp, ustack_pt, entry, true);
  34 }
  35
  36 static inline void
  37 hart_kernel_transfer(struct hart_transition* tctx,
  38                             ptr_t kstack_tp,  ptr_t entry)
  39 {
  40     hart_prepare_transition(tctx, kstack_tp, 0, entry, false);
  41 }
  42
  43 #endif /* __LUNAIX_CONTEXT_H */