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Kernel: Clean up the page fault handling code a bit

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Not using "else" after "return" unnests the code and makes it easier to
follow. Also use an enum for the two different page fault types.
This commit is contained in:
Andreas Kling 2019-08-06 09:33:35 +02:00
parent f58b0c245d
commit af4cf01560
2 changed files with 22 additions and 19 deletions
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7
Kernel/Arch/i386/CPU.h
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@ -303,9 +303,16 @@ public:
{
}
enum class Type {
PageNotPresent,
ProtectionViolation,
};
VirtualAddress vaddr() const { return m_vaddr; }
u16 code() const { return m_code; }
Type type() const { return (Type)(m_code & 1); }
bool is_not_present() const { return (m_code & 1) == PageFaultFlags::NotPresent; }
bool is_protection_violation() const { return (m_code & 1) == PageFaultFlags::ProtectionViolation; }
bool is_read() const { return (m_code & 2) == PageFaultFlags::Read; }