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| author | Andreas Sandberg <andreas@sandberg.pp.se> | 2013-09-18 11:28:27 +0200 |
|---|---|---|
| committer | Andreas Sandberg <andreas@sandberg.pp.se> | 2013-09-18 11:28:27 +0200 |
| commit | 4b840b8322f4536a4e0c49c43f999c00fa66a1e9 (patch) | |
| tree | 80ec23fcbe371ccc23a184f246546f758c54310e /src/arch/x86/interrupts.cc | |
| parent | 15733e9b33921236c2da2d4f6d1772bdd4d21069 (diff) | |
| download | gem5-4b840b8322f4536a4e0c49c43f999c00fa66a1e9.tar.xz | |
x86: Add support for checking the raw state of an interrupt
In order to support hardware virtualization, we need to be able to
check if there are any interrupts pending irregardless of the
rflags.intf value. This changeset adds the checkInterruptsRaw() method
to the x86 interrupt control. It returns true if there are pending
interrupts that can be delivered as soon as the CPU is ready for
interrupt delivery.
Diffstat (limited to 'src/arch/x86/interrupts.cc')
| -rw-r--r-- | src/arch/x86/interrupts.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/arch/x86/interrupts.cc b/src/arch/x86/interrupts.cc index afed9c132..ca765782e 100644 --- a/src/arch/x86/interrupts.cc +++ b/src/arch/x86/interrupts.cc @@ -649,6 +649,14 @@ X86ISA::Interrupts::checkInterrupts(ThreadContext *tc) const return false; } +bool +X86ISA::Interrupts::checkInterruptsRaw() const +{ + return pendingUnmaskableInt || pendingExtInt || + (IRRV > ISRV && bits(IRRV, 7, 4) > + bits(regs[APIC_TASK_PRIORITY], 7, 4)); +} + Fault X86ISA::Interrupts::getInterrupt(ThreadContext *tc) { |