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@ -1,14 +1,29 @@
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const SYSCALL_READ: usize = 63;
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const SYSCALL_WRITE: usize = 64;
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const SYSCALL_EXIT: usize = 93;
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const SYSCALL_YIELD: usize = 124;
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const SYSCALL_GET_TIME: usize = 169;
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const SYSCALL_GETPID: usize = 172;
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const SYSCALL_FORK: usize = 220;
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const SYSCALL_EXEC: usize = 221;
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const SYSCALL_WAITPID: usize = 260;
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fn syscall(id: usize, args: [usize; 3]) -> isize {
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use super::{Stat, TimeVal};
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pub const SYSCALL_OPENAT: usize = 56;
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pub const SYSCALL_CLOSE: usize = 57;
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pub const SYSCALL_READ: usize = 63;
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pub const SYSCALL_WRITE: usize = 64;
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pub const SYSCALL_UNLINKAT: usize = 35;
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pub const SYSCALL_LINKAT: usize = 37;
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pub const SYSCALL_FSTAT: usize = 80;
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pub const SYSCALL_EXIT: usize = 93;
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pub const SYSCALL_YIELD: usize = 124;
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pub const SYSCALL_GETTIMEOFDAY: usize = 169;
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pub const SYSCALL_GETPID: usize = 172;
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pub const SYSCALL_FORK: usize = 220;
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pub const SYSCALL_EXEC: usize = 221;
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pub const SYSCALL_WAITPID: usize = 260;
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pub const SYSCALL_SET_PRIORITY: usize = 140;
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pub const SYSCALL_MUNMAP: usize = 215;
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pub const SYSCALL_MMAP: usize = 222;
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pub const SYSCALL_SPAWN: usize = 400;
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pub const SYSCALL_MAIL_READ: usize = 401;
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pub const SYSCALL_MAIL_WRITE: usize = 402;
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pub const SYSCALL_DUP: usize = 24;
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pub const SYSCALL_PIPE: usize = 59;
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pub fn syscall(id: usize, args: [usize; 3]) -> isize {
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let mut ret: isize;
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unsafe {
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asm!(
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@ -22,14 +37,94 @@ fn syscall(id: usize, args: [usize; 3]) -> isize {
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ret
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}
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pub fn syscall6(id: usize, args: [usize; 6]) -> isize {
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let mut ret: isize;
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unsafe {
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asm!(
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"ecall",
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inlateout("x10") args[0] => ret,
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in("x11") args[1],
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in("x12") args[2],
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in("x13") args[3],
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in("x14") args[4],
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in("x15") args[5],
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in("x17") id
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);
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}
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ret
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}
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pub fn sys_openat(dirfd: usize, path: &str, flags: u32, mode: u32) -> isize {
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syscall6(
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SYSCALL_OPENAT,
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[
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dirfd,
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path.as_ptr() as usize,
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flags as usize,
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mode as usize,
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0,
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0,
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],
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)
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}
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pub fn sys_close(fd: usize) -> isize {
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syscall(SYSCALL_CLOSE, [fd, 0, 0])
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}
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pub fn sys_read(fd: usize, buffer: &mut [u8]) -> isize {
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syscall(SYSCALL_READ, [fd, buffer.as_mut_ptr() as usize, buffer.len()])
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syscall(
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SYSCALL_READ,
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[fd, buffer.as_mut_ptr() as usize, buffer.len()],
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)
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}
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pub fn sys_write(fd: usize, buffer: &[u8]) -> isize {
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syscall(SYSCALL_WRITE, [fd, buffer.as_ptr() as usize, buffer.len()])
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}
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pub fn sys_linkat(
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old_dirfd: usize,
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old_path: &str,
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new_dirfd: usize,
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new_path: &str,
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flags: usize,
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) -> isize {
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syscall6(
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SYSCALL_LINKAT,
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[
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old_dirfd,
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old_path.as_ptr() as usize,
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new_dirfd,
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new_path.as_ptr() as usize,
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flags,
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0,
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],
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)
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}
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pub fn sys_unlinkat(dirfd: usize, path: &str, flags: usize) -> isize {
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syscall(SYSCALL_UNLINKAT, [dirfd, path.as_ptr() as usize, flags])
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}
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pub fn sys_fstat(fd: usize, st: &Stat) -> isize {
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syscall(SYSCALL_FSTAT, [fd, st as *const _ as usize, 0])
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}
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pub fn sys_mail_read(buffer: &mut [u8]) -> isize {
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syscall(
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SYSCALL_MAIL_READ,
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[buffer.as_ptr() as usize, buffer.len(), 0],
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)
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}
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pub fn sys_mail_write(pid: usize, buffer: &[u8]) -> isize {
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syscall(
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SYSCALL_MAIL_WRITE,
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[pid, buffer.as_ptr() as usize, buffer.len()],
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)
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}
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pub fn sys_exit(exit_code: i32) -> ! {
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syscall(SYSCALL_EXIT, [exit_code as usize, 0, 0]);
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panic!("sys_exit never returns!");
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@ -39,8 +134,8 @@ pub fn sys_yield() -> isize {
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syscall(SYSCALL_YIELD, [0, 0, 0])
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}
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pub fn sys_get_time() -> isize {
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syscall(SYSCALL_GET_TIME, [0, 0, 0])
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pub fn sys_get_time(time: &TimeVal, tz: usize) -> isize {
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syscall(SYSCALL_GETTIMEOFDAY, [time as *const _ as usize, tz, 0])
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}
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pub fn sys_getpid() -> isize {
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@ -55,6 +150,30 @@ pub fn sys_exec(path: &str) -> isize {
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syscall(SYSCALL_EXEC, [path.as_ptr() as usize, 0, 0])
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}
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pub fn sys_waitpid(pid: isize, exit_code: *mut i32) -> isize {
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syscall(SYSCALL_WAITPID, [pid as usize, exit_code as usize, 0])
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}
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pub fn sys_waitpid(pid: isize, xstatus: *mut i32) -> isize {
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syscall(SYSCALL_WAITPID, [pid as usize, xstatus as usize, 0])
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}
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pub fn sys_set_priority(prio: isize) -> isize {
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syscall(SYSCALL_SET_PRIORITY, [prio as usize, 0, 0])
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}
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pub fn sys_mmap(start: usize, len: usize, prot: usize) -> isize {
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syscall(SYSCALL_MMAP, [start, len, prot])
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}
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pub fn sys_munmap(start: usize, len: usize) -> isize {
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syscall(SYSCALL_MUNMAP, [start, len, 0])
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}
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pub fn sys_spawn(path: &str) -> isize {
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syscall(SYSCALL_SPAWN, [path.as_ptr() as usize, 0, 0])
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}
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pub fn sys_dup(fd: usize) -> isize {
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syscall(SYSCALL_DUP, [fd, 0, 0])
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}
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pub fn sys_pipe(pipe: &mut [usize]) -> isize {
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syscall(SYSCALL_PIPE, [pipe.as_mut_ptr() as usize, 0, 0])
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}
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chyyuu
4 years ago
committed by
GitHub