From 7d5aab23a584d593bcab4435df5cd6e0fc534bbd Mon Sep 17 00:00:00 2001
From: Jean Guyader <jean.guyader@eu.citrix.com>
Date: Mon, 13 Oct 2008 14:02:33 +0100
Subject: [PATCH]   hvm-log-to-dom0

---
 hw/xen_platform.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/hw/xen_platform.c b/hw/xen_platform.c
index ebbad317..38eec0bb 100644
--- a/hw/xen_platform.c
+++ b/hw/xen_platform.c
@@ -68,6 +68,20 @@ static void xen_platform_ioport_writeb(void *opaque, uint32_t addr, uint32_t val
             d->platform_flags = val & PFFLAG_ROM_LOCK;
         break;
     }
+    case 8:
+        {
+            static char log_buffer[4096];
+            static int log_buffer_off;
+            if (val == '\n' || log_buffer_off == sizeof(log_buffer) - 1) {
+                /* Flush buffer */
+                log_buffer[log_buffer_off] = 0;
+                fprintf(logfile, "%s\n", log_buffer);
+                log_buffer_off = 0;
+                break;
+            }
+            log_buffer[log_buffer_off++] = val;
+        }
+        break;
     default:
         break;
     }
-- 
2.39.5