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Kernel: Add initial implementation of Processor in aarch64

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Instead of storing the current Processor into a core local register, we
currently just store it into a global, since we don't support SMP for
aarch64 anyway. This simplifies the initial implementation.
This commit is contained in:
Timon Kruiper 2022-05-09 12:14:20 +02:00 • committed by Linus Groh
parent ed4bfaed12
commit c515e1341a
4 changed files with 57 additions and 14 deletions
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13
Kernel/Arch/aarch64/Processor.h
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@ -22,6 +22,7 @@ class PageDirectory;
};
class Thread;
class Processor;
// FIXME This needs to go behind some sort of platform abstraction
// it is used between Thread and Processor.
@ -30,8 +31,13 @@ struct [[gnu::aligned(16)]] FPUState
u8 buffer[512];
};
// FIXME: Remove this once we support SMP in aarch64
extern Processor* g_current_processor;
class Processor {
public:
void initialize(u32 cpu);
void set_specific(ProcessorSpecificDataID /*specific_id*/, void* /*ptr*/)
{
VERIFY_NOT_REACHED();
@ -79,9 +85,9 @@ public:
VERIFY_NOT_REACHED();
}
// FIXME: When aarch64 supports multiple cores, return the correct core id here.
ALWAYS_INLINE static u32 current_id()
{
VERIFY_NOT_REACHED();
return 0;
}
@ -127,7 +133,10 @@ public:
return nullptr;
}
ALWAYS_INLINE static Processor& current() { VERIFY_NOT_REACHED(); }
ALWAYS_INLINE static Processor& current()
{
return *g_current_processor;
}
static void deferred_call_queue(Function<void()> /* callback */)
{