439 lines
7.8 KiB
ArmAsm
439 lines
7.8 KiB
ArmAsm
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/*******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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x86/interrupt.s
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Transfers control to interrupt handlers when interrupts happen.
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*******************************************************************************/
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.section .text
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.global isr0
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.type isr0, @function
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isr0:
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cli
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pushl $0 # err_code
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pushl $0 # int_no
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jmp interrupt_handler_prepare
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.global isr1
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.type isr1, @function
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isr1:
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cli
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pushl $0 # err_code
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pushl $1 # int_no
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jmp interrupt_handler_prepare
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.global isr2
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.type isr2, @function
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isr2:
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cli
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pushl $0 # err_code
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pushl $2 # int_no
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jmp interrupt_handler_prepare
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.global isr3
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.type isr3, @function
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isr3:
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cli
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pushl $0 # err_code
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pushl $3 # int_no
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jmp interrupt_handler_prepare
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.global isr4
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.type isr4, @function
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isr4:
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cli
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pushl $0 # err_code
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pushl $4 # int_no
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jmp interrupt_handler_prepare
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.global isr5
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.type isr5, @function
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isr5:
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cli
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pushl $0 # err_code
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pushl $5 # int_no
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jmp interrupt_handler_prepare
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.global isr6
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.type isr6, @function
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isr6:
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cli
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pushl $0 # err_code
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pushl $6 # int_no
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jmp interrupt_handler_prepare
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.global isr7
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.type isr7, @function
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isr7:
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cli
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pushl $0 # err_code
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pushl $7 # int_no
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jmp interrupt_handler_prepare
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.global isr8
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.type isr8, @function
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isr8:
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cli
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# pushl $0 # err_code pushed by CPU
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pushl $8 # int_no
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jmp interrupt_handler_prepare
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.global isr9
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.type isr9, @function
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isr9:
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cli
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pushl $0 # err_code
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pushl $9 # int_no
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jmp interrupt_handler_prepare
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.global isr10
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.type isr10, @function
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isr10:
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cli
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# pushl $0 # err_code pushed by CPU
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pushl $10 # int_no
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jmp interrupt_handler_prepare
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.global isr11
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.type isr11, @function
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isr11:
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cli
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# pushl $0 # err_code pushed by CPU
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pushl $11 # int_no
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jmp interrupt_handler_prepare
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.global isr12
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.type isr12, @function
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isr12:
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cli
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# pushl $0 # err_code pushed by CPU
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pushl $12 # int_no
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jmp interrupt_handler_prepare
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.global isr13
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.type isr13, @function
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isr13:
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cli
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# pushl $0 # err_code pushed by CPU
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pushl $13 # int_no
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jmp interrupt_handler_prepare
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.global isr14
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.type isr14, @function
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isr14:
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cli
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# pushl $0 # err_code pushed by CPU
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pushl $14 # int_no
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jmp interrupt_handler_prepare
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.global isr15
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.type isr15, @function
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isr15:
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cli
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pushl $0 # err_code
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pushl $15 # int_no
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jmp interrupt_handler_prepare
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.global isr16
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.type isr16, @function
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isr16:
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cli
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pushl $0 # err_code
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pushl $16 # int_no
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jmp interrupt_handler_prepare
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.global isr17
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.type isr17, @function
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isr17:
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cli
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pushl $0 # err_code
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pushl $17 # int_no
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jmp interrupt_handler_prepare
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.global isr18
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.type isr18, @function
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isr18:
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cli
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pushl $0 # err_code
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pushl $18 # int_no
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jmp interrupt_handler_prepare
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.global isr19
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.type isr19, @function
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isr19:
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cli
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pushl $0 # err_code
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pushl $19 # int_no
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jmp interrupt_handler_prepare
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.global isr20
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.type isr20, @function
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isr20:
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cli
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pushl $0 # err_code
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pushl $20 # int_no
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jmp interrupt_handler_prepare
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.global isr21
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.type isr21, @function
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isr21:
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cli
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pushl $0 # err_code
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pushl $21 # int_no
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jmp interrupt_handler_prepare
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.global isr22
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.type isr22, @function
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isr22:
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cli
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pushl $0 # err_code
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pushl $22 # int_no
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jmp interrupt_handler_prepare
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.global isr23
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.type isr23, @function
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isr23:
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cli
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pushl $0 # err_code
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pushl $23 # int_no
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jmp interrupt_handler_prepare
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.global isr24
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.type isr24, @function
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isr24:
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cli
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pushl $0 # err_code
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pushl $24 # int_no
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jmp interrupt_handler_prepare
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.global isr25
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.type isr25, @function
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isr25:
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cli
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pushl $0 # err_code
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pushl $25 # int_no
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jmp interrupt_handler_prepare
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.global isr26
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.type isr26, @function
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isr26:
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cli
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pushl $0 # err_code
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pushl $26 # int_no
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jmp interrupt_handler_prepare
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.global isr27
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.type isr27, @function
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isr27:
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cli
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pushl $0 # err_code
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pushl $27 # int_no
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jmp interrupt_handler_prepare
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.global isr28
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.type isr28, @function
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isr28:
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cli
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pushl $0 # err_code
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pushl $28 # int_no
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jmp interrupt_handler_prepare
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.global isr29
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.type isr29, @function
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isr29:
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cli
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pushl $0 # err_code
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pushl $29 # int_no
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jmp interrupt_handler_prepare
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.global isr30
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.type isr30, @function
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isr30:
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cli
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pushl $0 # err_code
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pushl $30 # int_no
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jmp interrupt_handler_prepare
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.global isr31
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.type isr31, @function
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isr31:
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cli
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pushl $0 # err_code
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pushl $31 # int_no
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jmp interrupt_handler_prepare
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.global isr128
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.type isr128, @function
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isr128:
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cli
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pushl $0 # err_code
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pushl $128 # int_no
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jmp interrupt_handler_prepare
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.global irq0
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.type irq0, @function
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irq0:
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cli
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pushl $0 # err_code
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pushl $32 # int_no
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jmp interrupt_handler_prepare
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.global irq1
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.type irq1, @function
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irq1:
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cli
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pushl $0 # err_code
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pushl $33 # int_no
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jmp interrupt_handler_prepare
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.global irq2
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.type irq2, @function
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irq2:
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cli
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pushl $0 # err_code
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pushl $34 # int_no
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jmp interrupt_handler_prepare
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.global irq3
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.type irq3, @function
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irq3:
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cli
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pushl $0 # err_code
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pushl $35 # int_no
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jmp interrupt_handler_prepare
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.global irq4
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.type irq4, @function
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irq4:
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cli
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pushl $0 # err_code
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pushl $36 # int_no
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jmp interrupt_handler_prepare
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.global irq5
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.type irq5, @function
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irq5:
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cli
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pushl $0 # err_code
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pushl $37 # int_no
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jmp interrupt_handler_prepare
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.global irq6
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.type irq6, @function
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irq6:
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cli
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pushl $0 # err_code
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pushl $38 # int_no
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jmp interrupt_handler_prepare
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.global irq7
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.type irq7, @function
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irq7:
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cli
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pushl $0 # err_code
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pushl $39 # int_no
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jmp interrupt_handler_prepare
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.global irq8
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.type irq8, @function
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irq8:
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cli
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pushl $0 # err_code
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pushl $40 # int_no
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jmp interrupt_handler_prepare
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.global irq9
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.type irq9, @function
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irq9:
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cli
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pushl $0 # err_code
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pushl $41 # int_no
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jmp interrupt_handler_prepare
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.global irq10
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.type irq10, @function
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irq10:
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cli
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pushl $0 # err_code
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pushl $42 # int_no
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jmp interrupt_handler_prepare
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.global irq11
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.type irq11, @function
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irq11:
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cli
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pushl $0 # err_code
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pushl $43 # int_no
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jmp interrupt_handler_prepare
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.global irq12
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.type irq12, @function
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irq12:
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cli
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pushl $0 # err_code
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pushl $44 # int_no
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jmp interrupt_handler_prepare
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.global irq13
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.type irq13, @function
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irq13:
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cli
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pushl $0 # err_code
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pushl $45 # int_no
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jmp interrupt_handler_prepare
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.global irq14
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.type irq14, @function
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irq14:
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cli
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pushl $0 # err_code
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pushl $46 # int_no
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jmp interrupt_handler_prepare
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.global irq15
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.type irq15, @function
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irq15:
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cli
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pushl $0 # err_code
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pushl $47 # int_no
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jmp interrupt_handler_prepare
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interrupt_handler_prepare:
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pushl %eax
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pushl %ecx
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pushl %edx
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pushl %ebx
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pushl %esp
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pushl %ebp
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pushl %esi
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pushl %edi
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# Push the user-space data segment.
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movl %ds, %ebp
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pushl %ebp
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# Load the kernel data segment.
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movw $0x10, %bp
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movl %ebp, %ds
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movl %ebp, %es
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movl %ebp, %fs
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movl %ebp, %gs
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# Push CR2 in case of page faults
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movl %cr2, %ebp
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pushl %ebp
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# Now call the interrupt handler.
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pushl %esp
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call interrupt_handler
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addl $4, %esp
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# Remove CR2 from the stack.
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addl $4, %esp
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# Restore the user-space data segment.
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popl %ebp
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movl %ebp, %ds
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movl %ebp, %es
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movl %ebp, %fs
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movl %ebp, %gs
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popl %edi
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popl %esi
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|
|
popl %ebp
|
||
|
|
popl %esp
|
||
|
|
popl %ebx
|
||
|
|
popl %edx
|
||
|
|
popl %ecx
|
||
|
|
popl %eax
|
||
|
|
|
||
|
|
# Remove int_no and err_code
|
||
|
|
addl $8, %esp
|
||
|
|
|
||
|
|
# Return to where we came from.
|
||
|
|
iret
|
||
|
|
|
||
|
|
.global interrupt_handler_null
|
||
|
|
.type interrupt_handler_null, @function
|
||
|
|
interrupt_handler_null:
|
||
|
|
iret
|
||
|
|
|
||
|
|
.global asm_interrupts_are_enabled
|
||
|
|
.type asm_interrupts_are_enabled, @function
|
||
|
|
asm_interrupts_are_enabled:
|
||
|
|
pushfl
|
||
|
|
popl %eax
|
||
|
|
andl $0x000200, %eax # FLAGS_INTERRUPT
|
||
|
|
retl
|
||
|
|
|