From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Mon, 27 Oct 2003 21:12:17 +0000 (+0000)
Subject: comments
X-Git-Tag: v0.5.0~12
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=db8d74668856e5bbc6c8fede0bb17c4f83e7debf;p=thirdparty%2Fqemu.git

comments


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@405 c046a42c-6fe2-441c-8c8c-71466251a162
---

diff --git a/cpu-defs.h b/cpu-defs.h
index 3ec866fa7b0..84b5e280e0c 100644
--- a/cpu-defs.h
+++ b/cpu-defs.h
@@ -32,8 +32,15 @@
 #define CPU_TLB_SIZE 256
 
 typedef struct CPUTLBEntry {
-    uint32_t address;
-    uint32_t addend;
+    /* bit 31 to TARGET_PAGE_BITS : virtual address 
+       bit TARGET_PAGE_BITS-1..IO_MEM_SHIFT : if non zero, memory io
+                                              zone number
+       bit 3                      : indicates that the entry is invalid
+       bit 2..0                   : zero
+    */
+    uint32_t address; 
+    /* addend to virtual address to get physical address */
+    uint32_t addend; 
 } CPUTLBEntry;
 
 #endif