1 #ifndef THREADS_INTERRUPT_H
2 #define THREADS_INTERRUPT_H
7 /* Interrupts on or off? */
10 INTR_OFF, /* Interrupts disabled. */
11 INTR_ON /* Interrupts enabled. */
14 enum intr_level intr_get_level (void);
15 enum intr_level intr_set_level (enum intr_level);
16 enum intr_level intr_enable (void);
17 enum intr_level intr_disable (void);
19 /* Interrupt stack frame. */
22 /* Pushed by intr_entry in intr-stubs.S.
23 These are the interrupted task's saved registers. */
24 uint32_t edi; /* Saved EDI. */
25 uint32_t esi; /* Saved ESI. */
26 uint32_t ebp; /* Saved EBP. */
27 uint32_t esp_dummy; /* Not used. */
28 uint32_t ebx; /* Saved EBX. */
29 uint32_t edx; /* Saved EDX. */
30 uint32_t ecx; /* Saved ECX. */
31 uint32_t eax; /* Saved EAX. */
32 uint16_t gs, :16; /* Saved GS segment register. */
33 uint16_t fs, :16; /* Saved FS segment register. */
34 uint16_t es, :16; /* Saved ES segment register. */
35 uint16_t ds, :16; /* Saved DS segment register. */
37 /* Pushed by intrNN_stub in intr-stubs.S. */
38 uint32_t vec_no; /* Interrupt vector number. */
40 /* Sometimes pushed by the CPU,
41 otherwise for consistency pushed as 0 by intrNN_stub.
42 The CPU puts it just under `eip', but we move it here. */
43 uint32_t error_code; /* Error code. */
45 /* Pushed by intrNN_stub in intr-stubs.S.
46 This frame pointer eases interpretation of backtraces. */
47 void *frame_pointer; /* Saved EBP (frame pointer). */
50 These are the interrupted task's saved registers. */
51 void (*eip) (void); /* Next instruction to execute. */
52 uint16_t cs, :16; /* Code segment for eip. */
53 uint32_t eflags; /* Saved CPU flags. */
54 void *esp; /* Saved stack pointer. */
55 uint16_t ss, :16; /* Data segment for esp. */
58 typedef void intr_handler_func (struct intr_frame *);
60 void intr_init (void);
61 void intr_register (uint8_t vec, int dpl, enum intr_level, intr_handler_func *,
63 bool intr_context (void);
64 void intr_yield_on_return (void);
66 void intr_dump_frame (const struct intr_frame *);
67 const char *intr_name (uint8_t vec);
69 #endif /* threads/interrupt.h */