Changeset 29687 in vbox for trunk/src/recompiler

Timestamp:

May 20, 2010 11:49:58 AM (15 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

61853

Message:

Make sure the right descriptor attributes (0xf3) are loaded in V86 mode (VT-x is picky)

File:

• trunk/src/recompiler/target-i386/translate.c (modified) (1 diff)

trunk/src/recompiler/target-i386/translate.c

@@ -2798 +2798 @@
                   offsetof(CPUX86State,segs[seg_reg].base));
 #ifdef VBOX
-    int flags = DESC_P_MASK | DESC_S_MASK | DESC_W_MASK;
-    if (seg_reg == R_CS)
-        flags |= DESC_CS_MASK;
+    /* flags must be 0xf3; expand-up read/write accessed data segment with DPL=3. (VT-x) */
+    unsigned flags = DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | DESC_A_MASK;
+    flags |= (3 << DESC_DPL_SHIFT);
+
     gen_op_movl_T0_im(flags);
     tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,segs[seg_reg].flags));