blob: fb19bdcd2ac4c3b7e4dc62518a92d8990a3e8f57 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
#ifndef io_header
#define io_header
#include <stdint.h>
#include <printf.h>
static inline void outb(uint16_t port, uint8_t value) {
asm volatile("outb %1, %0" :: "a"(value), "Nd"(port));
}
static inline uint8_t inb(uint16_t port) {
uint8_t ret;
asm volatile("inb %0, %1" : "=a"(ret) : "Nd"(port));
return(ret);
}
static inline void io_wait() {
asm volatile("outb 0x80, %%al"::"a"(0));
}
static inline uint64_t read_tsc() {
uint64_t time;
asm volatile("xor rax, rax\n"
"rdtsc\n"
"shl rdx, 32\n"
"or rax, rdx\n"
"mov %0, rax\n"
:"=r"(time):);
return time;
}
void outb_wait(uint16_t port, uint8_t value);
void read_msr(uint32_t addr, uint64_t *value);
void write_msr(uint32_t addr, uint64_t value);
void hlt();
uint64_t get_rip();
#endif
|