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| author | Anthony Liguori <aliguori@amazon.com> | 2013-11-21 07:08:47 -0800 |
|---|---|---|
| committer | Anthony Liguori <aliguori@amazon.com> | 2013-11-21 07:08:47 -0800 |
| commit | ffb62da7a23b1d13a3582bee6b2df599baa6ecfb (patch) | |
| tree | 540c15d67f11bbdfb5197694a2aa23a990ad2cf3 /hw | |
| parent | 425ff5102f8668d5c921e2a1d77ee9173742bfdf (diff) | |
| parent | 14a650ec25ca93a626397783d6c6e840ec2502c6 (diff) | |
| download | qemu-ffb62da7a23b1d13a3582bee6b2df599baa6ecfb.zip qemu-ffb62da7a23b1d13a3582bee6b2df599baa6ecfb.tar.gz qemu-ffb62da7a23b1d13a3582bee6b2df599baa6ecfb.tar.bz2 | |
Merge remote-tracking branch 'jliu/or32' into staging
# By Sebastian Macke
# Via Jia Liu
* jliu/or32:
target-openrisc: Correct carry flag check of l.addc and l.addic test cases
target-openrisc: Correct memory bounds checking for the tlb buffers
openrisc-timer: Reduce overhead, Separate clock update functions
target-openrisc: Correct wrong epcr register in interrupt handler
target-openrisc: Remove executable flag for every page
target-openrisc: Remove unnecessary code generated by jump instructions
target-openrisc: Speed up move instruction
Message-id: 1384958318-9145-1-git-send-email-proljc@gmail.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/openrisc/cputimer.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/hw/openrisc/cputimer.c b/hw/openrisc/cputimer.c index 988ca20..9c54945 100644 --- a/hw/openrisc/cputimer.c +++ b/hw/openrisc/cputimer.c @@ -30,19 +30,28 @@ static int is_counting; void cpu_openrisc_count_update(OpenRISCCPU *cpu) { - uint64_t now, next; - uint32_t wait; + uint64_t now; - now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); if (!is_counting) { - timer_del(cpu->env.timer); - last_clk = now; return; } - + now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); cpu->env.ttcr += (uint32_t)muldiv64(now - last_clk, TIMER_FREQ, get_ticks_per_sec()); last_clk = now; +} + +void cpu_openrisc_timer_update(OpenRISCCPU *cpu) +{ + uint32_t wait; + uint64_t now, next; + + if (!is_counting) { + return; + } + + cpu_openrisc_count_update(cpu); + now = last_clk; if ((cpu->env.ttmr & TTMR_TP) <= (cpu->env.ttcr & TTMR_TP)) { wait = TTMR_TP - (cpu->env.ttcr & TTMR_TP) + 1; @@ -50,7 +59,6 @@ void cpu_openrisc_count_update(OpenRISCCPU *cpu) } else { wait = (cpu->env.ttmr & TTMR_TP) - (cpu->env.ttcr & TTMR_TP); } - next = now + muldiv64(wait, get_ticks_per_sec(), TIMER_FREQ); timer_mod(cpu->env.timer, next); } @@ -63,8 +71,9 @@ void cpu_openrisc_count_start(OpenRISCCPU *cpu) void cpu_openrisc_count_stop(OpenRISCCPU *cpu) { - is_counting = 0; + timer_del(cpu->env.timer); cpu_openrisc_count_update(cpu); + is_counting = 0; } static void openrisc_timer_cb(void *opaque) @@ -84,15 +93,15 @@ static void openrisc_timer_cb(void *opaque) break; case TIMER_INTR: cpu->env.ttcr = 0; - cpu_openrisc_count_start(cpu); break; case TIMER_SHOT: cpu_openrisc_count_stop(cpu); break; case TIMER_CONT: - cpu_openrisc_count_start(cpu); break; } + + cpu_openrisc_timer_update(cpu); } void cpu_openrisc_clock_init(OpenRISCCPU *cpu) |