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This will allow us to figure out the virtual address that caused a page- or general protection fault.
34 lines
482 B
ArmAsm
34 lines
482 B
ArmAsm
#include "textflag.h"
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TEXT ·EnableInterrupts(SB),NOSPLIT,$0
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STI
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RET
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TEXT ·DisableInterrupts(SB),NOSPLIT,$0
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CLI
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RET
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TEXT ·Halt(SB),NOSPLIT,$0
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CLI
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HLT
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RET
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TEXT ·FlushTLBEntry(SB),NOSPLIT,$0
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INVLPG virtAddr+0(FP)
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RET
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TEXT ·SwitchPDT(SB),NOSPLIT,$0
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// loading CR3 also triggers a TLB flush
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MOVQ pdtPhysAddr+0(FP), CR3
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RET
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TEXT ·ActivePDT(SB),NOSPLIT,$0
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MOVQ CR3, AX
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MOVQ AX, ret+0(FP)
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RET
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TEXT ·ReadCR2(SB),NOSPLIT,$0
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MOVQ CR2, AX
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MOVQ AX, ret+0(FP)
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RET
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