patch-2.1.23 linux/arch/sparc/ap1000/kgdb.c

• Lines: 79
• Date: Sun Jan 26 12:07:06 1997
• Orig file: v2.1.22/linux/arch/sparc/ap1000/kgdb.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.22/linux/arch/sparc/ap1000/kgdb.c linux/arch/sparc/ap1000/kgdb.c
@@ -0,0 +1,78 @@
+  /*
+   * Copyright 1996 The Australian National University.
+   * Copyright 1996 Fujitsu Laboratories Limited
+   * 
+   * This software may be distributed under the terms of the Gnu
+   * Public License version 2 or later
+  */
+/* routines to support remote kgdb to Linux/AP+ cells */
+
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/malloc.h>
+#include <asm/ap1000/apservice.h>
+#include <asm/ap1000/apreg.h>
+
+static char out_buf[0x100];
+static int out_buf_pos = 0;
+
+static char in_buf[0x100];
+static int in_buf_pos = 0;
+static int in_buf_count = 0;
+
+static int hash_pos = -1;
+
+void ap_dbg_flush(void)
+{
+	struct cap_request req;
+	
+	if (out_buf_pos == 0) return;
+	
+	req.cid = mpp_cid();
+	req.type = REQ_PUTDEBUGSTRING;
+	req.size = sizeof(req) + out_buf_pos;
+	req.header = MAKE_HEADER(HOST_CID);
+	
+	write_bif_polled((char *)&req,sizeof(req),(char *)out_buf,out_buf_pos);
+	
+	out_buf_pos = 0;
+	hash_pos = -1;
+}
+
+/* called by the gdb stuff */
+void putDebugChar(char c)
+{
+	if (c == '#') hash_pos = out_buf_pos;
+	
+	out_buf[out_buf_pos++] = c;
+	if (out_buf_pos == sizeof(out_buf)) {
+		ap_dbg_flush();
+	}
+}
+
+/* used by gdb to get input */
+char getDebugChar(void)
+{
+	unsigned flags;
+	struct cap_request req;
+	
+	ap_dbg_flush();
+	
+	if (in_buf_count == 0) {
+		req.cid = mpp_cid();
+		req.type = REQ_GETDEBUGCHAR;
+		req.size = sizeof(req);
+		req.header = MAKE_HEADER(HOST_CID);
+		
+		save_flags(flags); cli();
+		write_bif_polled((char *)&req,sizeof(req),NULL,0);
+		ap_wait_request(&req,REQ_GETDEBUGCHAR);
+		read_bif(in_buf,req.size - sizeof(req));
+		in_buf_pos = 0;
+		in_buf_count = req.size - sizeof(req);
+		restore_flags(flags);
+	}
+	
+	in_buf_count--;
+	return(in_buf[in_buf_pos++]);
+}