From: Sebastian Macke <sebastian@macke.de>
Date: Thu, 3 Oct 2013 08:04:46 +0000 (+0800)
Subject: target-openrisc: Correct handling of page faults.
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=bf961b52785061e1802214c9e03a1c65b261f7c1;p=qmiga%2Fqemu.git

target-openrisc: Correct handling of page faults.

The result of (rw & 0) is always zero and therefore a logic false.
The whole comparison will therefore never be executed, it is a obvious bug,
we should use !(rw & 1) here.

Signed-off-by: Sebastian Macke <sebastian@macke.de>
Reviewed-by: Jia Liu <proljc@gmail.com>
---

diff --git a/target-openrisc/mmu.c b/target-openrisc/mmu.c
index 57f5616e9c..323a173a82 100644
--- a/target-openrisc/mmu.c
+++ b/target-openrisc/mmu.c
@@ -102,7 +102,7 @@ int cpu_openrisc_get_phys_data(OpenRISCCPU *cpu,
         }
     }
 
-    if ((rw & 0) && ((right & PAGE_READ) == 0)) {
+    if (!(rw & 1) && ((right & PAGE_READ) == 0)) {
         return TLBRET_BADADDR;
     }
     if ((rw & 1) && ((right & PAGE_WRITE) == 0)) {