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[Qemu-devel] [PATCH] ARM (Thumb) read from R15


From: Ulrich Hecht
Subject: [Qemu-devel] [PATCH] ARM (Thumb) read from R15
Date: Thu, 28 Jun 2007 16:31:32 +0200
User-agent: KMail/1.9.5

Hi!

QEMU does not set the Thumb bit when reading from R15 in Thumb mode. 
Here's the fix:

Index: target-arm/translate.c
===================================================================
RCS file: /sources/qemu/qemu/target-arm/translate.c,v
retrieving revision 1.53
diff -u -r1.53 translate.c
--- target-arm/translate.c      11 Jun 2007 18:59:35 -0000      1.53
+++ target-arm/translate.c      28 Jun 2007 14:29:15 -0000
@@ -307,7 +307,7 @@
     if (reg == 15) {
         /* normaly, since we updated PC, we need only to add one insn */
         if (s->thumb)
-            val = (long)s->pc + 2;
+            val = (long)s->pc + 3;
         else
             val = (long)s->pc + 4;
         gen_op_movl_TN_im[t](val);

CU
Uli

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