218 lines
3.9 KiB
NASM
218 lines
3.9 KiB
NASM
bits 32
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; !!! ISRs !!!
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global _i86_isr0
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global _i86_isr1
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global _i86_isr2
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global _i86_isr3
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global _i86_isr4
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global _i86_isr5
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global _i86_isr6
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global _i86_isr7
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global _i86_isr8
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global _i86_isr9
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global _i86_isr10
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global _i86_isr11
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global _i86_isr12
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global _i86_isr13
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global _i86_isr14
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global _i86_isr15
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global _i86_isr16
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global _i86_isr17
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global _i86_isr18
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global _i86_isr19
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global _i86_isr20
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global _i86_isr21
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global _i86_isr22
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global _i86_isr23
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global _i86_isr24
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global _i86_isr25
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global _i86_isr26
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global _i86_isr27
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global _i86_isr28
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global _i86_isr29
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global _i86_isr30
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global _i86_isr31
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_i86_isr0:
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cli
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push byte 0; A normal ISR stub that pops a dummy error code to keep a
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; uniform stack frame
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push byte 0
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jmp isr_common_stub
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_i86_isr1:
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cli
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push byte 0
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push byte 1
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jmp isr_common_stub
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_i86_isr2:
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cli
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push byte 0
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push byte 2
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jmp isr_common_stub
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_i86_isr3:
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cli
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push byte 0
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push byte 3
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jmp isr_common_stub
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_i86_isr4:
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cli
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push byte 0
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push byte 4
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jmp isr_common_stub
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_i86_isr5:
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cli
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push byte 0
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push byte 5
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jmp isr_common_stub
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_i86_isr6:
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cli
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push byte 0
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push byte 6
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jmp isr_common_stub
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_i86_isr7:
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cli
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push byte 0
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push byte 7
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jmp isr_common_stub
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_i86_isr8:
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cli
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push byte 8
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jmp isr_common_stub
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_i86_isr9:
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cli
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push byte 0
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push byte 9
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jmp isr_common_stub
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_i86_isr10:
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cli
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push byte 10
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jmp isr_common_stub
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_i86_isr11:
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cli
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push byte 11
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jmp isr_common_stub
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_i86_isr12:
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cli
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push byte 12
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jmp isr_common_stub
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_i86_isr13:
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cli
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push byte 13
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jmp isr_common_stub
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_i86_isr14:
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cli
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push byte 14
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jmp isr_common_stub
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_i86_isr15:
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cli
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push byte 0
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push byte 15
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jmp isr_common_stub
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_i86_isr16:
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cli
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push byte 0
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push byte 16
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jmp isr_common_stub
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_i86_isr17:
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cli
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push byte 0
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push byte 17
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jmp isr_common_stub
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_i86_isr18:
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cli
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push byte 0
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push byte 18
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jmp isr_common_stub
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_i86_isr19:
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cli
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push byte 0
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push byte 19
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jmp isr_common_stub
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_i86_isr20:
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cli
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push byte 0
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push byte 20
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jmp isr_common_stub
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_i86_isr21:
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cli
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push byte 0
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push byte 21
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jmp isr_common_stub
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_i86_isr22:
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cli
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push byte 0
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push byte 22
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jmp isr_common_stub
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_i86_isr23:
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cli
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push byte 0
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push byte 23
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jmp isr_common_stub
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_i86_isr24:
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cli
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push byte 0
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push byte 24
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jmp isr_common_stub
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_i86_isr25:
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cli
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push byte 0
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push byte 25
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jmp isr_common_stub
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_i86_isr26:
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cli
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push byte 0
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push byte 26
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jmp isr_common_stub
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_i86_isr27:
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cli
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push byte 0
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push byte 27
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jmp isr_common_stub
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_i86_isr28:
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cli
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push byte 0
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push byte 28
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jmp isr_common_stub
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_i86_isr29:
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cli
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push byte 0
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push byte 29
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jmp isr_common_stub
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_i86_isr30:
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cli
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push byte 0
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push byte 30
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jmp isr_common_stub
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_i86_isr31:
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cli
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push byte 0
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push byte 31
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jmp isr_common_stub
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extern _i86_FaultHandler
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isr_common_stub:
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pusha
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push ds
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push es
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push fs
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push gs
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mov ax, 0x10 ; Load the Kernel Data Segment descriptor!
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mov ds, ax
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mov es, ax
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mov fs, ax
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mov gs, ax
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mov eax, esp ; Push us the stack
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push eax
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mov eax, _i86_FaultHandler
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call eax ; A special call, preserves the 'eip' register
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pop eax
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pop gs
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pop fs
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pop es
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pop ds
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popa
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add esp, 8 ; Cleans up the pushed error code and pushed ISR number
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iret ; pops 5 things at once: CS, EIP, EFLAGS, SS, and ESP!
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