From: Richard Henderson <rth@twiddle.net>
Date: Fri, 14 Mar 2014 22:30:10 +0000 (-0700)
Subject: cpu: Move tcg_exit_req to the end of CPUState
X-Git-Tag: qemu-xen-4.5.0-rc1~90^2
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=7e4fb26d757b460de5b80b4220bcd926f7175cb2;p=qemu-upstream-4.5-testing.git

cpu: Move tcg_exit_req to the end of CPUState

Reverse an increase in the size of generated code.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
---

diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index 06ee2636c..f99885a13 100644
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -227,7 +227,6 @@ struct CPUState {
     bool stop;
     bool stopped;
     volatile sig_atomic_t exit_request;
-    volatile sig_atomic_t tcg_exit_req;
     uint32_t interrupt_request;
     int singlestep_enabled;
     int64_t icount_extra;
@@ -272,6 +271,12 @@ struct CPUState {
     } icount_decr;
     uint32_t can_do_io;
     int32_t exception_index; /* used by m68k TCG */
+
+    /* Note that this is accessed at the start of every TB via a negative
+       offset from AREG0.  Leave this field at the end so as to make the
+       (absolute value) offset as small as possible.  This reduces code
+       size, especially for hosts without large memory offsets.  */
+    volatile sig_atomic_t tcg_exit_req;
 };
 
 QTAILQ_HEAD(CPUTailQ, CPUState);