1 files changed, 67 insertions, 0 deletions
diff --git a/sys/gio/gki/gkiopen.x b/sys/gio/gki/gkiopen.x
new file mode 100644
index 00000000..562ed8c3
--- /dev/null
+++ b/sys/gio/gki/gkiopen.x
@@ -0,0 +1,67 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<config.h>
+include	<gki.h>
+
+# GKI_OPENWS -- Open workstation.
+#
+# BOI GKI_OPENWS L M N D
+#    
+#        L(i)            5 + N
+#        M(i)            access mode (APPEND=4, NEW_FILE=5, TEE=6)
+#        N(i)            number of characters in field D
+#        D(Nc)           device name as in graphcap file
+
+procedure gki_openws (fd, device, mode)
+
+int	fd			# output file
+char	device[ARB]		# device name
+int	mode			# access mode
+
+int	ip, n, epa, nchars
+pointer	sp, gki, op
+int	strlen()
+include	"gki.com"
+
+begin
+	call smark (sp)
+
+	n = strlen (device)
+	call salloc (gki, GKI_OPENWS_LEN + n, TY_SHORT)
+
+	# Pack the device name as a SHORT integer array.
+	op = gki + GKI_OPENWS_D - 1
+	for (ip=1;  ip <= n;  ip=ip+1) {
+	    Mems[op] = device[ip]
+	    op = op + 1
+	}
+
+	if (IS_INLINE(fd)) {
+	    epa = gk_dd[GKI_OPENWS]
+	    if (epa != 0)
+		call zcall3 (epa, Mems[gki+GKI_OPENWS_D-1], n, mode)
+	} else {
+	    Mems[gki  ] = BOI
+	    Mems[gki+1] = GKI_OPENWS
+	    Mems[gki+2] = GKI_OPENWS_LEN + n
+	    Mems[gki+GKI_OPENWS_M-1] = mode
+	    Mems[gki+GKI_OPENWS_N-1] = n
+
+	    # Send a copy of the open workstation directive to PSIOCTRL in
+	    # the CL process to connect the graphics stream to a kernel,
+	    # before writing to the graphics stream.  The GKI instruction
+	    # must be preceded by the integer value of the stream number.
+
+	    nchars = (GKI_OPENWS_LEN + n) * SZ_SHORT
+	    if (IS_FILE(fd) && (fd >= STDGRAPH && fd <= STDPLOT)) {
+		call write (PSIOCTRL, fd, SZ_INT32)
+		call write (PSIOCTRL, Mems[gki], nchars)
+		call flush (PSIOCTRL)
+	    }
+
+	    # Now send a copy to the graphics kernel.
+	    call write (gk_fd[fd], Mems[gki], nchars)
+	}
+
+	call sfree (sp)
+end