88 lines
1.5 KiB
ArmAsm
88 lines
1.5 KiB
ArmAsm
.code32
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/*
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* Interupt handlers
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*/
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.macro ISR_NOERRORCODE NAME, VECTOR
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.globl irs\NAME
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irs\NAME:
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cli
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push $0
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push \VECTOR
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jmp irs_common
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.endm
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.macro ISR_ERROCODE NAME, VECTOR
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.globl irs\NAME
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irs\NAME:
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cli
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push \VECTOR
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jmp irs_common
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.endm
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ISR_NOERRORCODE 0 $0
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ISR_NOERRORCODE 1 $1
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ISR_NOERRORCODE 2 $2
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ISR_NOERRORCODE 3 $3
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ISR_NOERRORCODE 4 $4
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ISR_NOERRORCODE 5 $5
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ISR_NOERRORCODE 6 $6
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ISR_NOERRORCODE 7 $7
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ISR_NOERRORCODE 8 $8
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ISR_NOERRORCODE 9 $9
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ISR_NOERRORCODE 10 $10
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ISR_NOERRORCODE 11 $11
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ISR_NOERRORCODE 12 $12
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ISR_NOERRORCODE 13 $13
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ISR_NOERRORCODE 14 $14
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ISR_NOERRORCODE 15 $15
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ISR_NOERRORCODE 16 $16
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ISR_NOERRORCODE 17 $17
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ISR_NOERRORCODE 18 $18
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ISR_NOERRORCODE 19 $19
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ISR_NOERRORCODE 20 $20
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ISR_NOERRORCODE 21 $21
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ISR_NOERRORCODE 22 $22
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ISR_NOERRORCODE 23 $23
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ISR_NOERRORCODE 24 $24
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ISR_NOERRORCODE 25 $25
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ISR_NOERRORCODE 26 $26
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ISR_NOERRORCODE 27 $27
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ISR_NOERRORCODE 28 $28
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ISR_NOERRORCODE 29 $29
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ISR_NOERRORCODE 30 $30
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ISR_NOERRORCODE 31 $31
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ISR_NOERRORCODE 50 $50
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irs_common:
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pusha # Pushes edi,esi,ebp,esp,ebx,edx,ecx,eax
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mov %ds, %ax
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push %eax
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/* load the kernel data segment descriptor*/
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mov $0x10, %ax
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mov %ax, %ds
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mov %ax, %es
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mov %ax, %fs
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mov %ax, %gs
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mov %esp, %eax
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push %eax
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call irs_handler
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pop %eax // pop stack pointer
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pop %ebx // reload ther orignal data segment descriptor
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mov %bx, %ds
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mov %bx, %es
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mov %bx, %fs
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mov %bx, %gs
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popa
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add $8, %esp # cleans push error and irs code
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iret # pops 5 things at once: CS, EIP, EFLAGS, SS, and ESP
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