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[Qemu-devel] [PATCH 4/7] arm: remove muldiv64()
From: |
Laurent Vivier |
Subject: |
[Qemu-devel] [PATCH 4/7] arm: remove muldiv64() |
Date: |
Tue, 25 Aug 2015 22:44:48 +0200 |
muldiv64() is used to convert microseconds to nanoseconds.
Use qemu_clock_get_ns() instead of qemu_clock_get_us()
to avoid this operation.
Signed-off-by: Laurent Vivier <address@hidden>
---
target-arm/helper.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/target-arm/helper.c b/target-arm/helper.c
index 1568aa6..f5e8fd8 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -678,8 +678,7 @@ void pmccntr_sync(CPUARMState *env)
{
uint64_t temp_ticks;
- temp_ticks = muldiv64(qemu_clock_get_us(QEMU_CLOCK_VIRTUAL),
- get_ticks_per_sec(), 1000000);
+ temp_ticks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
if (env->cp15.c9_pmcr & PMCRD) {
/* Increment once every 64 processor clock cycles */
@@ -717,8 +716,7 @@ static uint64_t pmccntr_read(CPUARMState *env, const
ARMCPRegInfo *ri)
return env->cp15.c15_ccnt;
}
- total_ticks = muldiv64(qemu_clock_get_us(QEMU_CLOCK_VIRTUAL),
- get_ticks_per_sec(), 1000000);
+ total_ticks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
if (env->cp15.c9_pmcr & PMCRD) {
/* Increment once every 64 processor clock cycles */
@@ -738,8 +736,7 @@ static void pmccntr_write(CPUARMState *env, const
ARMCPRegInfo *ri,
return;
}
- total_ticks = muldiv64(qemu_clock_get_us(QEMU_CLOCK_VIRTUAL),
- get_ticks_per_sec(), 1000000);
+ total_ticks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
if (env->cp15.c9_pmcr & PMCRD) {
/* Increment once every 64 processor clock cycles */
--
2.1.0
- [Qemu-devel] [PATCH 0/7] remove useless muldiv64(), Laurent Vivier, 2015/08/25
- [Qemu-devel] [PATCH 1/7] PCI: remove muldiv64(), Laurent Vivier, 2015/08/25
- [Qemu-devel] [PATCH 2/7] mips: remove muldiv64(), Laurent Vivier, 2015/08/25
- [Qemu-devel] [PATCH 3/7] openrisc: remove muldiv64(), Laurent Vivier, 2015/08/25
- [Qemu-devel] [PATCH 4/7] arm: remove muldiv64(),
Laurent Vivier <=
- [Qemu-devel] [PATCH 5/7] hpet: remove muldiv64(), Laurent Vivier, 2015/08/25
- [Qemu-devel] [PATCH 7/7] net: remove muldiv64(), Laurent Vivier, 2015/08/25
- [Qemu-devel] [PATCH 6/7] bt: remove muldiv64(), Laurent Vivier, 2015/08/25
- Re: [Qemu-devel] [PATCH 0/7] remove useless muldiv64(), Paolo Bonzini, 2015/08/25