From: "Alex Bennée" <alex.bennee@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Peter Maydell" <peter.maydell@linaro.org>,
kvm@vger.kernel.org, marc.zyngier@arm.com,
linux-arm-kernel@lists.infradead.org,
"Alex Bennée" <alex.bennee@linaro.org>,
kvmarm@lists.cs.columbia.edu, christoffer.dall@linaro.org
Subject: [Qemu-devel] [PATCH v4 5/5] target-arm: cpu.h document why env->spsr exists
Date: Mon, 16 Mar 2015 11:01:56 +0000 [thread overview]
Message-ID: <1426503716-13931-6-git-send-email-alex.bennee@linaro.org> (raw)
In-Reply-To: <1426503716-13931-1-git-send-email-alex.bennee@linaro.org>
I was getting very confused about the duplication of state so wanted to
make it explicit.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 083211c..6dc1799 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -155,6 +155,11 @@ typedef struct CPUARMState {
This contains all the other bits. Use cpsr_{read,write} to access
the whole CPSR. */
uint32_t uncached_cpsr;
+ /* The spsr is a alias for spsr_elN where N is the current
+ * exception level. It is provided for here so the TCG msr/mrs
+ * implementation can access one register. Care needs to be taken
+ * to ensure the banked_spsr[] is also updated.
+ */
uint32_t spsr;
/* Banked registers. */
--
2.3.2
next prev parent reply other threads:[~2015-03-16 11:06 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-16 11:01 [Qemu-devel] [PATCH v4 0/5] QEMU ARM64 Migration Fixes Alex Bennée
2015-03-16 11:01 ` [Qemu-devel] [PATCH v4 1/5] target-arm: kvm: save/restore mp state Alex Bennée
2015-03-17 15:17 ` Peter Maydell
2015-03-16 11:01 ` [Qemu-devel] [PATCH v4 2/5] hw/intc: arm_gic_kvm.c restore config first Alex Bennée
2015-03-16 11:15 ` Christoffer Dall
2015-03-16 11:01 ` [Qemu-devel] [PATCH v4 3/5] target-arm: kvm64 sync FP register state Alex Bennée
2015-03-17 15:29 ` Peter Maydell
2015-03-16 11:01 ` [Qemu-devel] [PATCH v4 4/5] target-arm: kvm64 fix save/restore of SPSR regs Alex Bennée
2015-03-16 12:52 ` Christoffer Dall
2015-03-17 16:18 ` Peter Maydell
2015-03-17 19:04 ` Christoffer Dall
2015-03-17 19:08 ` Peter Maydell
2015-03-16 11:01 ` Alex Bennée [this message]
2015-03-17 15:50 ` [Qemu-devel] [PATCH v4 5/5] target-arm: cpu.h document why env->spsr exists Peter Maydell
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