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[Qemu-devel] [PATCH] target-sh4: move intr_at_halt out of cpu_halted()
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [PATCH] target-sh4: move intr_at_halt out of cpu_halted() |
Date: |
Thu, 24 Feb 2011 12:54:17 +0100 |
All targets except SH4 have the same cpu_halted() routine, and it has
only one caller. It is therefore a good candidate for inlining.
The difference is the handling of the intr_at_halt, which is necessary
to ignore SR.BL when sleeping. Move intr_at_halt handling out of it, by
setting this variable while executing the sleep instruction, and
clearing it when the CPU has been woken-up by an interrupt, whatever the
state of SR.BL.
Cc: Paolo Bonzini <address@hidden>
Signed-off-by: Aurelien Jarno <address@hidden>
---
target-sh4/exec.h | 1 -
target-sh4/helper.c | 2 +-
target-sh4/op_helper.c | 1 +
3 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/target-sh4/exec.h b/target-sh4/exec.h
index 2999c02..61bc121 100644
--- a/target-sh4/exec.h
+++ b/target-sh4/exec.h
@@ -37,7 +37,6 @@ static inline int cpu_halted(CPUState *env) {
return 0;
if (cpu_has_work(env)) {
env->halted = 0;
- env->intr_at_halt = 1;
return 0;
}
return EXCP_HALTED;
diff --git a/target-sh4/helper.c b/target-sh4/helper.c
index b9fcba6..1f0d15b 100644
--- a/target-sh4/helper.c
+++ b/target-sh4/helper.c
@@ -93,8 +93,8 @@ void do_interrupt(CPUState * env)
if (do_irq && !env->intr_at_halt) {
return; /* masked */
}
- env->intr_at_halt = 0;
}
+ env->intr_at_halt = 0;
if (do_irq) {
irq_vector = sh_intc_get_pending_vector(env->intc_handle,
diff --git a/target-sh4/op_helper.c b/target-sh4/op_helper.c
index 30f9842..2cd7fed 100644
--- a/target-sh4/op_helper.c
+++ b/target-sh4/op_helper.c
@@ -119,6 +119,7 @@ void helper_debug(void)
void helper_sleep(uint32_t next_pc)
{
env->halted = 1;
+ env->intr_at_halt = 1;
env->exception_index = EXCP_HLT;
env->pc = next_pc;
cpu_loop_exit();
--
1.7.2.3
- [Qemu-devel] [PATCH] target-sh4: move intr_at_halt out of cpu_halted(),
Aurelien Jarno <=