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[Qemu-devel] [PATCH] cpu: Move tcg_exit_req to the end of CPUState
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH] cpu: Move tcg_exit_req to the end of CPUState |
Date: |
Fri, 14 Mar 2014 15:30:10 -0700 |
Reverse an increase in the size of generated code.
Cc: Andreas Färber <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
include/qom/cpu.h | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index 06ee263..f99885a 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);
--
1.8.5.3
- [Qemu-devel] [PATCH] cpu: Move tcg_exit_req to the end of CPUState,
Richard Henderson <=