113 lines
2.5 KiB
ArmAsm
113 lines
2.5 KiB
ArmAsm
/*
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* This file is part of NativeOS
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* Copyright (C) 2015-2018 The NativeOS contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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.text
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.align 4
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.global idt_load
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idt_load:
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lidt (idt_toc)
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sti
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ret
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/* Non erratic IDT handlers. */
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.macro NON_ERROR_INTERRUPT num
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.global isr_\num
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isr_\num:
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pushl $0
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pushl $\num
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jmp idt_common_prehandler
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.endm
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/* Error IDT handlers. */
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.macro ERROR_INTERRUPT num
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.global isr_\num
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isr_\num:
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pushl $\num
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jmp idt_common_prehandler
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.endm
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/* IDT declarations. */
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NON_ERROR_INTERRUPT 0
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NON_ERROR_INTERRUPT 1
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NON_ERROR_INTERRUPT 2
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NON_ERROR_INTERRUPT 3
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NON_ERROR_INTERRUPT 4
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NON_ERROR_INTERRUPT 5
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NON_ERROR_INTERRUPT 6
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NON_ERROR_INTERRUPT 7
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ERROR_INTERRUPT 8
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NON_ERROR_INTERRUPT 9
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ERROR_INTERRUPT 10
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ERROR_INTERRUPT 11
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ERROR_INTERRUPT 12
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ERROR_INTERRUPT 13
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ERROR_INTERRUPT 14
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NON_ERROR_INTERRUPT 15
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NON_ERROR_INTERRUPT 16
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NON_ERROR_INTERRUPT 17
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NON_ERROR_INTERRUPT 18
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NON_ERROR_INTERRUPT 19
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NON_ERROR_INTERRUPT 20
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NON_ERROR_INTERRUPT 21
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NON_ERROR_INTERRUPT 22
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NON_ERROR_INTERRUPT 23
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NON_ERROR_INTERRUPT 24
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NON_ERROR_INTERRUPT 25
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NON_ERROR_INTERRUPT 26
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NON_ERROR_INTERRUPT 27
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NON_ERROR_INTERRUPT 28
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NON_ERROR_INTERRUPT 29
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NON_ERROR_INTERRUPT 30
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NON_ERROR_INTERRUPT 31
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NON_ERROR_INTERRUPT 32
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NON_ERROR_INTERRUPT 33
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NON_ERROR_INTERRUPT 34
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NON_ERROR_INTERRUPT 35
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NON_ERROR_INTERRUPT 36
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NON_ERROR_INTERRUPT 37
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NON_ERROR_INTERRUPT 38
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NON_ERROR_INTERRUPT 39
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NON_ERROR_INTERRUPT 40
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NON_ERROR_INTERRUPT 41
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NON_ERROR_INTERRUPT 42
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NON_ERROR_INTERRUPT 43
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NON_ERROR_INTERRUPT 44
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NON_ERROR_INTERRUPT 45
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NON_ERROR_INTERRUPT 46
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NON_ERROR_INTERRUPT 47
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.global idt_common_prehandler
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idt_common_prehandler:
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pusha
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/* Save ESP in the stack so we can access other registers. */
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mov %esp, %eax
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push %eax
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call idt_handler
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/* Remove ESP */
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pop %eax
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popa
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/* Removes error code and interrupt routine number. */
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add $8, %esp
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iret
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