lunaix-os/arch/aarch64/includes/asm/hart.h

   1 #ifndef __LUNAIX_ARCH_HART_H
   2 #define __LUNAIX_ARCH_HART_H
   3
   4 #ifndef __ASM__
   5 #include <lunaix/types.h>
   6
   7 struct hart_state;
   8
   9 struct regcontext
  10 {
  11     union {
  12         reg_t x[32];
  13         struct {
  14             reg_t x[29];
  15             reg_t fp;
  16             reg_t lr;
  17             reg_t sp;
  18         };
  19     };
  20 } compact;
  21
  22 struct exec_param
  23 {
  24     struct hart_state* parent_state;
  25     reg_t vector;
  26     reg_t syndrome;
  27     reg_t elink;
  28     reg_t sp;
  29 } compact;
  30
  31 struct hart_state
  32 {
  33     reg_t depth;
  34     struct regcontext registers;
  35     union
  36     {
  37         reg_t sp;
  38         volatile struct exec_param* execp;
  39     };
  40 } compact;
  41
  42 static inline int
  43 hart_vector_stamp(struct hart_state* hstate) {
  44     return hstate->execp->vector;
  45 }
  46
  47 static inline unsigned int
  48 hart_ecause(struct hart_state* hstate) {
  49     return hstate->execp->syndrome;
  50 }
  51
  52 static inline struct hart_state*
  53 hart_parent_state(struct hart_state* hstate)
  54 {
  55     return hstate->execp->parent_state;
  56 }
  57
  58 static inline void
  59 hart_push_state(struct hart_state* p_hstate, struct hart_state* hstate)
  60 {
  61     hstate->execp->parent_state = p_hstate;
  62 }
  63
  64 static inline ptr_t
  65 hart_pc(struct hart_state* hstate)
  66 {
  67     return hstate->execp->elink;
  68 }
  69
  70 static inline ptr_t
  71 hart_sp(struct hart_state* hstate)
  72 {
  73     return hstate->execp->sp;
  74 }
  75
  76 static inline bool
  77 kernel_context(struct hart_state* hstate)
  78 {
  79     // TODO
  80     return false;
  81 }
  82
  83 static inline ptr_t
  84 hart_stack_frame(struct hart_state* hstate)
  85 {
  86     return hstate->registers.fp;
  87 }
  88
  89 #endif
  90
  91 #endif /* __LUNAIX_ARCH_HART_H */