zig/lib/std/os/linux/arm64.zig
Eric Joldasov 50339f595a all: zig fmt and rename "@XToY" to "@YFromX"
Signed-off-by: Eric Joldasov <bratishkaerik@getgoogleoff.me>
2023-06-19 12:34:42 -07:00

303 lines
7.1 KiB
Zig

const std = @import("../../std.zig");
const maxInt = std.math.maxInt;
const linux = std.os.linux;
const SYS = linux.SYS;
const socklen_t = linux.socklen_t;
const sockaddr = linux.sockaddr;
const iovec = std.os.iovec;
const iovec_const = std.os.iovec_const;
const uid_t = linux.uid_t;
const gid_t = linux.gid_t;
const pid_t = linux.pid_t;
const stack_t = linux.stack_t;
const sigset_t = linux.sigset_t;
const timespec = std.os.linux.timespec;
pub fn syscall0(number: SYS) usize {
return asm volatile ("svc #0"
: [ret] "={x0}" (-> usize),
: [number] "{x8}" (@intFromEnum(number)),
: "memory", "cc"
);
}
pub fn syscall1(number: SYS, arg1: usize) usize {
return asm volatile ("svc #0"
: [ret] "={x0}" (-> usize),
: [number] "{x8}" (@intFromEnum(number)),
[arg1] "{x0}" (arg1),
: "memory", "cc"
);
}
pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize {
return asm volatile ("svc #0"
: [ret] "={x0}" (-> usize),
: [number] "{x8}" (@intFromEnum(number)),
[arg1] "{x0}" (arg1),
[arg2] "{x1}" (arg2),
: "memory", "cc"
);
}
pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize {
return asm volatile ("svc #0"
: [ret] "={x0}" (-> usize),
: [number] "{x8}" (@intFromEnum(number)),
[arg1] "{x0}" (arg1),
[arg2] "{x1}" (arg2),
[arg3] "{x2}" (arg3),
: "memory", "cc"
);
}
pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize) usize {
return asm volatile ("svc #0"
: [ret] "={x0}" (-> usize),
: [number] "{x8}" (@intFromEnum(number)),
[arg1] "{x0}" (arg1),
[arg2] "{x1}" (arg2),
[arg3] "{x2}" (arg3),
[arg4] "{x3}" (arg4),
: "memory", "cc"
);
}
pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) usize {
return asm volatile ("svc #0"
: [ret] "={x0}" (-> usize),
: [number] "{x8}" (@intFromEnum(number)),
[arg1] "{x0}" (arg1),
[arg2] "{x1}" (arg2),
[arg3] "{x2}" (arg3),
[arg4] "{x3}" (arg4),
[arg5] "{x4}" (arg5),
: "memory", "cc"
);
}
pub fn syscall6(
number: SYS,
arg1: usize,
arg2: usize,
arg3: usize,
arg4: usize,
arg5: usize,
arg6: usize,
) usize {
return asm volatile ("svc #0"
: [ret] "={x0}" (-> usize),
: [number] "{x8}" (@intFromEnum(number)),
[arg1] "{x0}" (arg1),
[arg2] "{x1}" (arg2),
[arg3] "{x2}" (arg3),
[arg4] "{x3}" (arg4),
[arg5] "{x4}" (arg5),
[arg6] "{x5}" (arg6),
: "memory", "cc"
);
}
const CloneFn = *const fn (arg: usize) callconv(.C) u8;
/// This matches the libc clone function.
pub extern fn clone(func: CloneFn, stack: usize, flags: u32, arg: usize, ptid: *i32, tls: usize, ctid: *i32) usize;
pub const restore = restore_rt;
pub fn restore_rt() callconv(.Naked) void {
switch (@import("builtin").zig_backend) {
.stage2_c => return asm volatile (
\\ mov x8, %[number]
\\ svc #0
:
: [number] "i" (@intFromEnum(SYS.rt_sigreturn)),
: "memory", "cc"
),
else => return asm volatile ("svc #0"
:
: [number] "{x8}" (@intFromEnum(SYS.rt_sigreturn)),
: "memory", "cc"
),
}
}
pub const O = struct {
pub const CREAT = 0o100;
pub const EXCL = 0o200;
pub const NOCTTY = 0o400;
pub const TRUNC = 0o1000;
pub const APPEND = 0o2000;
pub const NONBLOCK = 0o4000;
pub const DSYNC = 0o10000;
pub const SYNC = 0o4010000;
pub const RSYNC = 0o4010000;
pub const DIRECTORY = 0o40000;
pub const NOFOLLOW = 0o100000;
pub const CLOEXEC = 0o2000000;
pub const ASYNC = 0o20000;
pub const DIRECT = 0o200000;
pub const LARGEFILE = 0o400000;
pub const NOATIME = 0o1000000;
pub const PATH = 0o10000000;
pub const TMPFILE = 0o20040000;
pub const NDELAY = NONBLOCK;
};
pub const F = struct {
pub const DUPFD = 0;
pub const GETFD = 1;
pub const SETFD = 2;
pub const GETFL = 3;
pub const SETFL = 4;
pub const SETOWN = 8;
pub const GETOWN = 9;
pub const SETSIG = 10;
pub const GETSIG = 11;
pub const GETLK = 5;
pub const SETLK = 6;
pub const SETLKW = 7;
pub const RDLCK = 0;
pub const WRLCK = 1;
pub const UNLCK = 2;
pub const SETOWN_EX = 15;
pub const GETOWN_EX = 16;
pub const GETOWNER_UIDS = 17;
};
pub const LOCK = struct {
pub const SH = 1;
pub const EX = 2;
pub const UN = 8;
pub const NB = 4;
};
pub const MAP = struct {
/// stack-like segment
pub const GROWSDOWN = 0x0100;
/// ETXTBSY
pub const DENYWRITE = 0x0800;
/// mark it as an executable
pub const EXECUTABLE = 0x1000;
/// pages are locked
pub const LOCKED = 0x2000;
/// don't check for reservations
pub const NORESERVE = 0x4000;
};
pub const VDSO = struct {
pub const CGT_SYM = "__kernel_clock_gettime";
pub const CGT_VER = "LINUX_2.6.39";
};
pub const Flock = extern struct {
type: i16,
whence: i16,
start: off_t,
len: off_t,
pid: pid_t,
__unused: [4]u8,
};
pub const msghdr = extern struct {
name: ?*sockaddr,
namelen: socklen_t,
iov: [*]iovec,
iovlen: i32,
__pad1: i32 = 0,
control: ?*anyopaque,
controllen: socklen_t,
__pad2: socklen_t = 0,
flags: i32,
};
pub const msghdr_const = extern struct {
name: ?*const sockaddr,
namelen: socklen_t,
iov: [*]const iovec_const,
iovlen: i32,
__pad1: i32 = 0,
control: ?*const anyopaque,
controllen: socklen_t,
__pad2: socklen_t = 0,
flags: i32,
};
pub const blksize_t = i32;
pub const nlink_t = u32;
pub const time_t = isize;
pub const mode_t = u32;
pub const off_t = isize;
pub const ino_t = usize;
pub const dev_t = usize;
pub const blkcnt_t = isize;
// The `stat` definition used by the Linux kernel.
pub const Stat = extern struct {
dev: dev_t,
ino: ino_t,
mode: mode_t,
nlink: nlink_t,
uid: uid_t,
gid: gid_t,
rdev: dev_t,
__pad: usize,
size: off_t,
blksize: blksize_t,
__pad2: i32,
blocks: blkcnt_t,
atim: timespec,
mtim: timespec,
ctim: timespec,
__unused: [2]u32,
pub fn atime(self: @This()) timespec {
return self.atim;
}
pub fn mtime(self: @This()) timespec {
return self.mtim;
}
pub fn ctime(self: @This()) timespec {
return self.ctim;
}
};
pub const timeval = extern struct {
tv_sec: isize,
tv_usec: isize,
};
pub const timezone = extern struct {
tz_minuteswest: i32,
tz_dsttime: i32,
};
pub const mcontext_t = extern struct {
fault_address: usize,
regs: [31]usize,
sp: usize,
pc: usize,
pstate: usize,
// Make sure the field is correctly aligned since this area
// holds various FP/vector registers
reserved1: [256 * 16]u8 align(16),
};
pub const ucontext_t = extern struct {
flags: usize,
link: ?*ucontext_t,
stack: stack_t,
sigmask: sigset_t,
mcontext: mcontext_t,
};
pub const Elf_Symndx = u32;