34 void pt_retstack_init(struct pt_retstack *retstack)  in pt_retstack_init()  argument
36 	if (!retstack)  in pt_retstack_init()
39 	retstack->top = 0;  in pt_retstack_init()
40 	retstack->bottom = 0;  in pt_retstack_init()
43 int pt_retstack_is_empty(const struct pt_retstack *retstack)  in pt_retstack_is_empty()  argument
45 	if (!retstack)  in pt_retstack_is_empty()
48 	return (retstack->top == retstack->bottom ? 1 : 0);  in pt_retstack_is_empty()
51 int pt_retstack_pop(struct pt_retstack *retstack, uint64_t *ip)  in pt_retstack_pop()  argument
55 	if (!retstack)  in pt_retstack_pop()
58 	top = retstack->top;  in pt_retstack_pop()
60 	if (top == retstack->bottom)  in pt_retstack_pop()
65 	retstack->top = top;  in pt_retstack_pop()
68 		*ip = retstack->stack[top];  in pt_retstack_pop()
73 int pt_retstack_push(struct pt_retstack *retstack, uint64_t ip)  in pt_retstack_push()  argument
77 	if (!retstack)  in pt_retstack_push()
80 	top = retstack->top;  in pt_retstack_push()
81 	bottom = retstack->bottom;  in pt_retstack_push()
83 	retstack->stack[top] = ip;  in pt_retstack_push()
90 	retstack->top = top;  in pt_retstack_push()
91 	retstack->bottom = bottom;  in pt_retstack_push()