1999-11-09 Roland McGrath <roland@baalperazim.frob.com>

1999-11-09  Roland McGrath  <roland@baalperazim.frob.com>

	* hurd/report-wait.c (describe_port): Return char * and use __stpcpy
	to return the location of the null byte written into the string.
	(describe_number): Likewise.
	(describe_number): Remove assert, not always used with #.
	If FLAVOR is null, don't use it.
	(describe_number): Take signed argument and print a - if negative.
	(_S_msg_report_wait): Report system call number for system calls that
	aren't mach_msg.  Soup up reporting for mach_msg: If destination port
	matches SS->intr_port, bracket port description with [...] to indicate
	a Hurd interruptible RPC; if destination port is null, examine the
	receive port and report that state; if receive port is also null,
	check for timeout and report its value.
	* sysdeps/mach/hurd/i386/intr-msg.h (MSG_EXAMINE): Return int that is
	zero iff we managed to examine the stack; take new args RCV_NAME,
	SEND_NAME, OPTION, and TIMEOUT to fill in with mach_msg args.
	* hurd/report-wait.c (describe_port): Recognize MACH_PORT_NULL and
	MACH_PORT_DEAD specially.