From 804789d73ee66857216f1e32c74c80dd65ef587f Mon Sep 17 00:00:00 2001
From: notaz
Date: Sun, 6 Jan 2013 03:55:09 +0200
Subject: gpus: handle list underflows better

---
 plugins/dfxvideo/gpulib_if.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'plugins/dfxvideo/gpulib_if.c')

diff --git a/plugins/dfxvideo/gpulib_if.c b/plugins/dfxvideo/gpulib_if.c
index d98520c..01b8dde 100644
--- a/plugins/dfxvideo/gpulib_if.c
+++ b/plugins/dfxvideo/gpulib_if.c
@@ -342,7 +342,12 @@ int do_cmd_list(unsigned int *list, int list_len, int *last_cmd)
 
         while(1)
         {
-          if((*list_position & 0xf000f000) == 0x50005000 || list_position >= list_end)
+          if(list_position >= list_end) {
+            cmd = -1;
+            goto breakloop;
+          }
+
+          if((*list_position & 0xf000f000) == 0x50005000)
             break;
 
           list_position++;
@@ -360,7 +365,12 @@ int do_cmd_list(unsigned int *list, int list_len, int *last_cmd)
 
         while(1)
         {
-          if((*list_position & 0xf000f000) == 0x50005000 || list_position >= list_end)
+          if(list_position >= list_end) {
+            cmd = -1;
+            goto breakloop;
+          }
+
+          if((*list_position & 0xf000f000) == 0x50005000)
             break;
 
           list_position += 2;
@@ -386,6 +396,7 @@ int do_cmd_list(unsigned int *list, int list_len, int *last_cmd)
     }
   }
 
+breakloop:
   gpu.ex_regs[1] &= ~0x1ff;
   gpu.ex_regs[1] |= lGPUstatusRet & 0x1ff;
 
-- 
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