mirror of
https://github.com/rcore-os/rCore.git
synced 2024-11-24 00:46:17 +04:00
26 lines
755 B
C
26 lines
755 B
C
#ifndef _RISCV_HTIF_H
|
|
#define _RISCV_HTIF_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#if __riscv_xlen == 64
|
|
# define TOHOST_CMD(dev, cmd, payload) \
|
|
(((uint64_t)(dev) << 56) | ((uint64_t)(cmd) << 48) | (uint64_t)(payload))
|
|
#else
|
|
# define TOHOST_CMD(dev, cmd, payload) ({ \
|
|
if ((dev) || (cmd)) __builtin_trap(); \
|
|
(payload); })
|
|
#endif
|
|
#define FROMHOST_DEV(fromhost_value) ((uint64_t)(fromhost_value) >> 56)
|
|
#define FROMHOST_CMD(fromhost_value) ((uint64_t)(fromhost_value) << 8 >> 56)
|
|
#define FROMHOST_DATA(fromhost_value) ((uint64_t)(fromhost_value) << 16 >> 16)
|
|
|
|
extern uintptr_t htif;
|
|
void query_htif(uintptr_t dtb);
|
|
void htif_console_putchar(uint8_t);
|
|
int htif_console_getchar();
|
|
void htif_poweroff() __attribute__((noreturn));
|
|
void htif_syscall(uintptr_t);
|
|
|
|
#endif
|