From: Wentong Wu <wentong.wu@intel.com>
To: qemu-devel@nongnu.org, peter.maydell@linaro.org
Cc: qemu-trivial@nongnu.org, marex@denx.de, crwulff@gmail.com,
Wentong Wu <wentong.wu@intel.com>
Subject: [PATCH v2 4/4] hw/nios2: exit to main CPU loop only when unmasking interrupts
Date: Fri, 10 Jul 2020 19:34:33 -0400 [thread overview]
Message-ID: <20200710233433.19729-4-wentong.wu@intel.com> (raw)
In-Reply-To: <20200710233433.19729-1-wentong.wu@intel.com>
Only when guest code is unmasking interrupts, terminate the excution
of translated code and exit to the main CPU loop to handle previous
pended interrupts because of the interrupts mask by guest code.
Signed-off-by: Wentong Wu <wentong.wu@intel.com>
---
hw/nios2/cpu_pic.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/nios2/cpu_pic.c b/hw/nios2/cpu_pic.c
index 1c1989d5..5ea7e52a 100644
--- a/hw/nios2/cpu_pic.c
+++ b/hw/nios2/cpu_pic.c
@@ -54,7 +54,8 @@ static void nios2_pic_cpu_handler(void *opaque, int irq, int level)
void nios2_check_interrupts(CPUNios2State *env)
{
- if (env->irq_pending) {
+ if (env->irq_pending &&
+ (env->regs[CR_STATUS] & CR_STATUS_PIE)) {
env->irq_pending = 0;
cpu_interrupt(env_cpu(env), CPU_INTERRUPT_HARD);
}
--
2.21.3
next prev parent reply other threads:[~2020-07-10 15:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-10 23:34 [PATCH v2 1/4] target/nios2: add DISAS_NORETURN case for nothing more to generate Wentong Wu
2020-07-10 23:34 ` [PATCH v2 2/4] target/nios2: in line the semantics of DISAS_UPDATE with other targets Wentong Wu
2020-07-10 23:34 ` [PATCH v2 3/4] target/nios2: Use gen_io_start around wrctl instruction Wentong Wu
2020-07-10 23:34 ` Wentong Wu [this message]
2020-07-11 18:49 ` [PATCH v2 1/4] target/nios2: add DISAS_NORETURN case for nothing more to generate Peter Maydell
2020-07-12 15:18 ` Wu, Wentong
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