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Kernel/aarch64: Implement critical section related functions

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This commit is contained in:
Timon Kruiper 2022-08-23 22:00:50 +02:00 • committed by Andreas Kling
parent e8aff0c1c8
commit c9118de5a6
1 changed files with 17 additions and 4 deletions
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21
Kernel/Arch/aarch64/Processor.h
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@ -136,12 +136,22 @@ public:
Aarch64::DAIF::set_I(); Aarch64::DAIF::set_I();
} }
ALWAYS_INLINE static void enter_critical() { VERIFY_NOT_REACHED(); } // FIXME: Share the critical functions with x86/Processor.h
ALWAYS_INLINE static void leave_critical() { VERIFY_NOT_REACHED(); } ALWAYS_INLINE static void enter_critical()
{
auto current_processor = current();
current_processor.m_in_critical = current_processor.in_critical() + 1;
}
ALWAYS_INLINE static void leave_critical()
{
auto current_processor = current();
current_processor.m_in_critical = current_processor.in_critical() - 1;
}
ALWAYS_INLINE static u32 in_critical() ALWAYS_INLINE static u32 in_critical()
{ {
VERIFY_NOT_REACHED(); return current().m_in_critical;
return 0;
} }
// FIXME: Actually return the idle thread once aarch64 supports threading. // FIXME: Actually return the idle thread once aarch64 supports threading.
@ -161,6 +171,9 @@ public:
} }
[[noreturn]] static void halt(); [[noreturn]] static void halt();
private:
u32 m_in_critical { 0 };
}; };
} }