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const arch = switch (@compileVar("arch")) {
x86_64 => @import("darwin_x86_64.zig"),
else => @compile_err("unsupported arch"),
};
const errno = @import("errno.zig");
pub const O_LARGEFILE = 0x0000;
pub const O_RDONLY = 0x0000;
pub const SEEK_SET = 0x0;
pub const SEEK_CUR = 0x1;
pub const SEEK_END = 0x2;
pub const SIGHUP = 1;
pub const SIGINT = 2;
pub const SIGQUIT = 3;
pub const SIGILL = 4;
pub const SIGTRAP = 5;
pub const SIGABRT = 6;
pub const SIGIOT = SIGABRT;
pub const SIGBUS = 7;
pub const SIGFPE = 8;
pub const SIGKILL = 9;
pub const SIGUSR1 = 10;
pub const SIGSEGV = 11;
pub const SIGUSR2 = 12;
pub const SIGPIPE = 13;
pub const SIGALRM = 14;
pub const SIGTERM = 15;
pub const SIGSTKFLT = 16;
pub const SIGCHLD = 17;
pub const SIGCONT = 18;
pub const SIGSTOP = 19;
pub const SIGTSTP = 20;
pub const SIGTTIN = 21;
pub const SIGTTOU = 22;
pub const SIGURG = 23;
pub const SIGXCPU = 24;
pub const SIGXFSZ = 25;
pub const SIGVTALRM = 26;
pub const SIGPROF = 27;
pub const SIGWINCH = 28;
pub const SIGIO = 29;
pub const SIGPOLL = 29;
pub const SIGPWR = 30;
pub const SIGSYS = 31;
pub const SIGUNUSED = SIGSYS;
/// Get the errno from a syscall return value, or 0 for no error.
pub fn getErrno(r: usize) -> usize {
const signed_r = *(&isize)(&r);
if (signed_r > -4096 && signed_r < 0) usize(-signed_r) else 0
}
pub fn write(fd: i32, buf: &const u8, count: usize) -> usize {
arch.syscall3(arch.SYS_write, usize(fd), usize(buf), count)
}
pub fn close(fd: i32) -> usize {
arch.syscall1(arch.SYS_close, usize(fd))
}
pub fn open_c(path: &const u8, flags: usize, perm: usize) -> usize {
arch.syscall3(arch.SYS_open, usize(path), flags, perm)
}
pub fn open(path: []const u8, flags: usize, perm: usize) -> usize {
var buf: [path.len + 1]u8 = undefined;
@memcpy(&buf[0], &path[0], path.len);
buf[path.len] = 0;
return open_c(buf.ptr, flags, perm);
}
pub fn read(fd: i32, buf: &u8, count: usize) -> usize {
arch.syscall3(arch.SYS_read, usize(fd), usize(buf), count)
}
pub fn lseek(fd: i32, offset: usize, ref_pos: usize) -> usize {
arch.syscall3(arch.SYS_lseek, usize(fd), offset, ref_pos)
}
pub const stat = arch.stat;
pub const timespec = arch.timespec;
pub fn fstat(fd: i32, stat_buf: &stat) -> usize {
arch.syscall2(arch.SYS_fstat, usize(fd), usize(stat_buf))
}
pub error Unexpected;
pub fn getrandom(buf: &u8, count: usize) -> usize {
const rr = open_c(c"/dev/urandom", O_LARGEFILE | O_RDONLY, 0);
if(getErrno(rr) > 0) return rr;
var fd: i32 = i32(rr);
const readRes = read(fd, buf, count);
readRes
}
pub fn raise(sig: i32) -> i32 {
// TODO investigate whether we need to block signals before calling kill
// like we do in the linux version of raise
//var set: sigset_t = undefined;
//blockAppSignals(&set);
const pid = i32(arch.syscall0(arch.SYS_getpid));
const ret = i32(arch.syscall2(arch.SYS_kill, usize(pid), usize(sig)));
//restoreSignals(&set);
return ret;
}
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