70 lines
1.2 KiB
ArmAsm
70 lines
1.2 KiB
ArmAsm
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# isr.s
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# Eryn Wells <eryn@erynwells.me>
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# Interrupt service routine. See also: Interrupts.cc.
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.section .text
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.global unhandledInterrupt
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.global handleDEException, handleGPException
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.global handleHardwareInterrupt0, handleHardwareInterrupt1
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#define SaveContext \
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pushal; \
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cld;
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#define RestoreContext \
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popal; \
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iret
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#define RestoreContextAndHalt \
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popal; \
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cli; \
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hlt
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// Generic handler
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unhandledInterrupt:
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SaveContext
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call doUnhandledInterrupt
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RestoreContextAndHalt
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// Divide error
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handleDEException:
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SaveContext
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pushl $0
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call dispatchExceptionHandler
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add $4, %esp
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RestoreContextAndHalt
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// Double fault
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handleDFException:
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SaveContext
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pushl $0x08
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call dispatchExceptionHandler
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add $4, %esp
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RestoreContextAndHalt
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// General Protection fault
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handleGPException:
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SaveContext
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pushl $0x0D
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call dispatchExceptionHandler
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add $4, %esp
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RestoreContextAndHalt
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/*
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* Hardware Interrupts
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*/
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handleHardwareInterrupt0:
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SaveContext
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call handleTimerInterrupt
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RestoreContext
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handleHardwareInterrupt1:
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SaveContext
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call handleKeyboardInterrupt
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RestoreContext
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#undef RestoreContext
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#undef SaveContext
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