ref: bf6a03689f1e9f9a50ed1a9316dbfc058365143b
parent: 78ef9193ce11d95dd93d49f875ac27f79858ace0
author: Ori Bernstein <ori@eigenstate.org>
date: Sun May 1 14:45:09 EDT 2016
Add support for signals in freebsd.
--- a/lib/sys/sys+freebsd-x64.myr
+++ b/lib/sys/sys+freebsd-x64.myr
@@ -16,6 +16,8 @@
type filetype = uint8
type fcntlcmd = int64
type umtxop = int32
+ type signo = int32
+ type sigflags = int32
type clock = union
`Clockrealtime
@@ -38,6 +40,16 @@
revents : uint16
;;
+ type sigset = struct
+ bits : uint32[4]
+ ;;
+
+ type sigaction = struct
+ handler : byte# /* code pointer */
+ flags : sigflags
+ mask : sigset
+ ;;
+
type waitstatus = union
`Waitfail int32
`Waitexit int32
@@ -327,6 +339,51 @@
const Umtxmtxwake2 : umtxop = 22
const Umtxmax : umtxop = 23
+ /* signal actions */
+ const Saonstack : sigflags = 0x0001 /* take signal on signal stack */
+ const Sarestart : sigflags = 0x0002 /* restart system call on signal return */
+ const Saresethand : sigflags = 0x0004 /* reset to SIG_DFL when taking signal */
+ const Sanodefer : sigflags = 0x0010 /* don't mask the signal we're delivering */
+ const Sanocldwait : sigflags = 0x0020 /* don't keep zombies around */
+ const Sasiginfo : sigflags = 0x0040 /* signal handler with SA_SIGINFO args */
+
+ /* signal numbers */
+ const Sighup : signo = 1 /* hangup */
+ const Sigint : signo = 2 /* interrupt */
+ const Sigquit : signo = 3 /* quit */
+ const Sigill : signo = 4 /* illegal instr. (not reset when caught) */
+ const Sigtrap : signo = 5 /* trace trap (not reset when caught) */
+ const Sigabrt : signo = 6 /* abort() */
+ const Sigiot : signo = Sigabrt /* compatibility */
+ const Sigemt : signo = 7 /* EMT instruction */
+ const Sigfpe : signo = 8 /* floating point exception */
+ const Sigkill : signo = 9 /* kill (cannot be caught or ignored) */
+ const Sigbus : signo = 10 /* bus error */
+ const Sigsegv : signo = 11 /* segmentation violation */
+ const Sigsys : signo = 12 /* non-existent system call invoked */
+ const Sigpipe : signo = 13 /* write on a pipe with no one to read it */
+ const Sigalrm : signo = 14 /* alarm clock */
+ const Sigterm : signo = 15 /* software termination signal from kill */
+ const Sigurg : signo = 16 /* urgent condition on IO channel */
+ const Sigstop : signo = 17 /* sendable stop signal not from tty */
+ const Sigtstp : signo = 18 /* stop signal from tty */
+ const Sigcont : signo = 19 /* continue a stopped process */
+ const Sigchld : signo = 20 /* to parent on child stop or exit */
+ const Sigttin : signo = 21 /* to readers pgrp upon background tty read */
+ const Sigttou : signo = 22 /* like TTIN if (tp->t_local<OSTOP) */
+ const Sigio : signo = 23 /* input/output possible signal */
+ const Sigxcpu : signo = 24 /* exceeded CPU time limit */
+ const Sigxfsz : signo = 25 /* exceeded file size limit */
+ const Sigvtalrm : signo = 26 /* virtual time alarm */
+ const Sigprof : signo = 27 /* profiling time alarm */
+ const Sigwinch : signo = 28 /* window size changes */
+ const Siginfo : signo = 29 /* information request */
+ const Sigusr1 : signo = 30 /* user defined signal 1 */
+ const Sigusr2 : signo = 31 /* user defined signal 2 */
+ const Sigthr : signo = 32 /* reserved by thread library. */
+ const Siglwp : signo = Sigthr
+ const Siglibrt : signo = 33 /* reserved by real-time library. */
+
/* syscalls */
const Syssyscall : scno = 0
const Sysexit : scno = 1
@@ -776,6 +833,10 @@
const chdir : (p : byte[:] -> int64)
const __getcwd : (buf : byte[:] -> int64)
+ /* signals */
+ const sigaction : (sig : signo, act : sigaction#, oact : sigaction# -> int)
+ const sigprocmask : (how : int32, set : sigset#, oset : sigset# -> int)
+
/* fd stuff */
const pipe : (fds : fd[2]# -> int64)
const dup : (fd : fd -> fd)
@@ -877,7 +938,6 @@
}
/* thread management */
-
const thr_new = {param, sz; -> syscall(Systhr_new, a(param), a(sz)) castto(int)} const thr_exit = {state; syscall(Systhr_exit, a(state))} const umtx_op = {obj, op, val, a1, a2; -> syscall(Sys_umtx_op, a(obj), a(op), a(val), a(a1), a(a2)) castto(int)}@@ -908,6 +968,10 @@
const dup2 = {src, dst; -> syscall(Sysdup2, a(src), a(dst)) castto(fd)} const fcntl = {fd, cmd, args; -> syscall(Sysfcntl, a(fd), a(cmd), a(args))} const poll = {pfd, tm; -> syscall(Syspoll, pfd castto(byte#), a(pfd.len), a(tm)) castto(int)}+
+/* signals */
+const sigaction = {sig, act, oact; -> syscall(Syssigaction, a(sig), a(act), a(oact)) castto(int)}+const sigprocmask = {sig, act, oact; -> syscall(Syssigprocmask, a(sig), a(act), a(oact)) castto(int)}/* networking */
const socket = {dom, stype, proto; -> syscall(Syssocket, a(dom), a(stype), a(proto)) castto(fd) }