hare

commit e63fc5f72ec73a07af4fe2b67e541cc06768f593
parent dcc798b0778075e952183f4b814feed6620f8f89
Author: Sebastian <sebastian@sebsite.pw>
Date:   Sat,  4 Feb 2023 00:50:19 -0500

unix::signal: add code enum

Signed-off-by: Sebastian <sebastian@sebsite.pw>

Diffstat:
M
unix/signal/+linux.ha
 | 
69
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---

1 file changed, 66 insertions(+), 3 deletions(-)
diff --git a/unix/signal/+linux.ha b/unix/signal/+linux.ha
@@ -151,13 +151,76 @@ export type siginfo = union {
 		// [[errors::errno]] to convert to a Hare-native error.
 		errno: rt::errno,
 		// The signal code, if any.
-		// TODO: Add enum type for this
-		code: int,
+		code: code,
 	},
 	// Pads the structure out to the length used by the kernel; do not use.
 	_si_pad: [128 - 3 * size(int)]u8,
 };
 
+// A code indicating why a signal was sent.
+export type code = enum int {
+	USER = 0, // sent by userspace program (kill)
+	KERNEL = 128, // sent by kernel
+	QUEUE = -1, // sent by sigqueue
+	TIMER = -2, // generated by expiration of a timer
+	MESQ = -3, // generated by arrival of a message on an empty queue
+	ASYNCIO = -4, // generated by completion of an asynchronous I/O request
+	SIGIO = -5,
+	TKILL = -6, // sent by userspace program (tkill, tgkill)
+	ASYNCNL = -60,
+
+	ILLOPC = 1, // SIGILL: illegal opcode
+	ILLOPN = 2, // SIGILL: illegal operand
+	ILLADR = 3, // SIGILL: illegal addressing mode
+	ILLTRP = 4, // SIGILL: illegal trap
+	PRVOPC = 5, // SIGILL: privileged opcode
+	PRVREG = 6, // SIGILL: privileged register
+	COPROC = 7, // SIGILL: coprocessor error
+	BADSTK = 8, // SIGILL: internal stack error
+
+	INTDIV = 1, // SIGFPE: integer divide by zero
+	INTOVF = 2, // SIGFPE: integer overflow
+	FLTDIV = 3, // SIGFPE: floating-point divide by zero
+	FLTOVF = 4, // SIGFPE: floating-point overflow
+	FLTUND = 5, // SIGFPE: floating-point underflow
+	FLTRES = 6, // SIGFPE: floating-point inexact result
+	FLTINV = 7, // SIGFPE: invalid floating-point operation
+	FLTSUB = 8, // SIGFPE: subscript out of range
+
+	MAPERR = 1, // SIGSEGV: address not mapped to object
+	ACCERR = 2, // SIGSEGV: invalid permissions for mapped object
+	BNDERR = 3, // SIGSEGV: failed address bound checks
+	PKUERR = 4, // SIGSEGV: access was denied by memory protection keys
+	MTEAERR = 8, // SIGSEGV
+	MTESERR = 9, // SIGSEGV
+
+	ADRALN = 1, // SIGBUS: invalid address alignment
+	ADRERR = 2, // SIGBUS: nonexistent physical address
+	OBJERR = 3, // SIGBUS: object-specific hardware error
+	MCEERR_AR = 4, // SIGBUS: hardware memory error consumed on a machine check; action required
+	MCEERR_AO = 5, // SIGBUS: hardware memory error detected in process but not consumed; action optional
+
+	BRKPT = 1, // SIGTRAP: process breakpoint
+	TRACE = 2, // SIGTRAP: process trace trap
+	BRANCH = 3, // SIGTRAP: process taken branch trap
+	HWBKPT = 4, // SIGTRAP: hardware breakpoint/watchpoint
+	UNK = 5, // SIGTRAP
+
+	EXITED = 1, // SIGCHLD: child exited
+	KILLED = 2, // SIGCHLD: child terminated abnormally without a core file
+	DUMPED = 3, // SIGCHLD: child terminated abnormally with a core file
+	TRAPPED = 4, // SIGCHLD: traced child has trapped
+	STOPPED = 5, // SIGCHLD: child has stopped
+	CONTINUED = 6, // SIGCHLD: stopped child has continued
+
+	IN = 1, // SIGPOLL: data input available
+	OUT = 2, // SIGPOLL: output buffers available
+	MSG = 3, // SIGPOLL: input message available
+	ERR = 4, // SIGPOLL: I/O error
+	PRI = 5, // SIGPOLL: high priority input available
+	HUP = 6, // SIGPOLL: device disconnected
+};
+
 // Flags used to configure the behavior of a signal handler.
 export type flag = enum int {
 	// For use with [[SIGCHLD]]. Prevents notifications when child processes
@@ -221,7 +284,7 @@ export fn read(fd: io::file) (siginfo | errors::error) = {
 	return siginfo {
 		signo = si.ssi_signo: signal,
 		errno = si.ssi_errno: rt::errno,
-		code = si.ssi_code,
+		code = si.ssi_code: code,
 		...
 	};
 };