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Kernel: Add interrupt related functions to Processor class

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This adds {enable, disable}_interrupts() and are_interrupts_enabled()
to the Processor class, and also implements them for x86(_64) and
aarch64.
This commit is contained in:
Timon Kruiper 2022-05-16 14:05:18 +02:00 committed by Linus Groh
parent 80be5f8044
commit 9413fe9fe5
Notes: sideshowbarker 2024-07-17 10:31:31 +09:00 
Author: https://github.com/FireFox317
Commit: https://github.com/SerenityOS/serenity/commit/9413fe9fe5
Pull-request: https://github.com/SerenityOS/serenity/pull/14146
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/BertalanD
Reviewed-by: https://github.com/Hendiadyoin1
Reviewed-by: https://github.com/nico ✅
2 changed files with 32 additions and 0 deletions
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17
Kernel/Arch/aarch64/Processor.h
View file

@ -12,6 +12,7 @@
#include <AK/Types.h>
#include <Kernel/Arch/ProcessorSpecificDataID.h>
#include <Kernel/Arch/aarch64/Registers.h>
class VirtualAddress;
@ -119,6 +120,22 @@ public:
return 0;
}
ALWAYS_INLINE static bool are_interrupts_enabled()
{
auto daif = Aarch64::DAIF::read();
return !daif.I;
}
ALWAYS_INLINE static void enable_interrupts()
{
Aarch64::DAIF::clear_I();
}
ALWAYS_INLINE static void disable_interrupts()
{
Aarch64::DAIF::set_I();
}
ALWAYS_INLINE static void enter_critical() { VERIFY_NOT_REACHED(); }
ALWAYS_INLINE static void leave_critical() { VERIFY_NOT_REACHED(); }
ALWAYS_INLINE static u32 in_critical()

15
Kernel/Arch/x86/Processor.h
View file

@ -422,6 +422,21 @@ public:
return m_features.has_flag(feature);
}
ALWAYS_INLINE static bool are_interrupts_enabled()
{
return Kernel::are_interrupts_enabled();
}
ALWAYS_INLINE static void enable_interrupts()
{
sti();
}
ALWAYS_INLINE static void disable_interrupts()
{
cli();
}
void check_invoke_scheduler();
void invoke_scheduler_async() { m_invoke_scheduler_async = true; }