2010-07-31 15:53:30 +00:00
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;
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; Copyright 2010 Stefan Lankes, Chair for Operating Systems,
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; RWTH Aachen University
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;
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; Licensed under the Apache License, Version 2.0 (the "License");
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; you may not use this file except in compliance with the License.
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; You may obtain a copy of the License at
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;
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; http://www.apache.org/licenses/LICENSE-2.0
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;
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; Unless required by applicable law or agreed to in writing, software
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; distributed under the License is distributed on an "AS IS" BASIS,
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; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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; See the License for the specific language governing permissions and
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; limitations under the License.
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;
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2010-09-10 22:18:55 +00:00
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; This file is part of MetalSVM.
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2010-07-31 15:53:30 +00:00
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; This is the kernel's entry point. We could either call main here,
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; or we can use this to setup the stack or other nice stuff, like
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; perhaps setting up the GDT and segments. Please note that interrupts
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; are disabled at this point: More on interrupts later!
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2012-05-21 15:04:05 +02:00
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%include "config.inc"
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2010-07-31 15:53:30 +00:00
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[BITS 32]
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; We use a special name to map this section at the begin of our kernel
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; => Multiboot needs its magic number at the begin of the kernel
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2010-09-07 21:07:27 +00:00
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SECTION .mboot
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2010-07-31 15:53:30 +00:00
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global start
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start:
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jmp stublet
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; This part MUST be 4byte aligned, so we solve that issue using 'ALIGN 4'
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ALIGN 4
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mboot:
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2010-10-20 15:39:36 +00:00
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; Multiboot macros to make a few lines more readable later
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2010-07-31 15:53:30 +00:00
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MULTIBOOT_PAGE_ALIGN equ 1<<0
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MULTIBOOT_MEMORY_INFO equ 1<<1
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2013-11-14 12:22:52 +01:00
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; MULTIBOOT_AOUT_KLUDGE equ 1<<16
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2010-07-31 15:53:30 +00:00
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MULTIBOOT_HEADER_MAGIC equ 0x1BADB002
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2010-10-25 17:10:16 +00:00
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MULTIBOOT_HEADER_FLAGS equ MULTIBOOT_PAGE_ALIGN | MULTIBOOT_MEMORY_INFO ; | MULTIBOOT_AOUT_KLUDGE
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2013-11-14 12:22:52 +01:00
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MULTIBOOT_CHECKSUM equ -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
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2010-07-31 15:53:30 +00:00
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EXTERN code, bss, end
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; This is the GRUB Multiboot header. A boot signature
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dd MULTIBOOT_HEADER_MAGIC
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dd MULTIBOOT_HEADER_FLAGS
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dd MULTIBOOT_CHECKSUM
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2010-10-25 17:10:16 +00:00
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SECTION .text
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2010-09-07 21:07:27 +00:00
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ALIGN 4
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2010-08-02 12:32:58 +00:00
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stublet:
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2010-12-10 06:16:58 +00:00
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; initialize stack pointer.
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2012-07-19 22:07:59 +02:00
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mov esp, boot_stack
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add esp, KERNEL_STACK_SIZE-16
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2012-06-10 08:05:24 +02:00
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; save pointer to the multiboot structure
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push ebx
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2011-07-18 09:01:35 +02:00
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; initialize cpu features
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call cpu_init
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; interpret multiboot information
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extern multiboot_init
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2012-06-10 08:05:24 +02:00
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; pointer to the multiboot structure is already pushed
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2011-07-18 09:01:35 +02:00
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call multiboot_init
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add esp, 4
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; jump to the boot processors's C code
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extern main
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call main
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2013-10-10 11:09:36 +02:00
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jmp $ ; infinitive loop
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2011-07-18 09:01:35 +02:00
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global cpu_init
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cpu_init:
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2010-12-10 06:16:58 +00:00
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mov eax, cr0
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2011-04-21 09:28:56 -07:00
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; enable caching, disable paging and fpu emulation
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and eax, 0x1ffffffb
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; ...and turn on FPU exceptions
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2011-04-21 19:46:55 +02:00
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or eax, 0x22
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2010-12-10 06:16:58 +00:00
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mov cr0, eax
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; clears the current pgd entry
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xor eax, eax
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mov cr3, eax
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2011-06-27 11:39:01 +02:00
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; at this stage, we disable the SSE support
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2011-04-20 15:16:22 +02:00
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mov eax, cr4
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and eax, 0xfffbf9ff
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mov cr4, eax
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2011-07-18 09:01:35 +02:00
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ret
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2010-07-31 15:53:30 +00:00
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; This will set up our new segment registers. We need to do
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; something special in order to set CS. We do what is called a
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; far jump. A jump that includes a segment as well as an offset.
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; This is declared in C as 'extern void gdt_flush();'
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global gdt_flush
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extern gp
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gdt_flush:
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lgdt [gp]
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mov ax, 0x10
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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 ss, ax
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jmp 0x08:flush2
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flush2:
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ret
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2011-04-08 10:45:26 -07:00
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; determines the current instruction pointer (after the jmp)
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2012-07-17 12:44:18 -07:00
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global read_ip
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read_ip:
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mov eax, [esp+4]
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pop DWORD [eax] ; Get the return address
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2013-10-10 11:09:36 +02:00
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add esp, 4 ; Dirty Hack! read_ip cleanup the stack
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2012-07-17 12:44:18 -07:00
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jmp [eax] ; Return. Can't use RET because return
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2011-03-02 06:28:50 +01:00
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; address popped off the stack.
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2010-07-31 15:53:30 +00:00
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; In just a few pages in this tutorial, we will add our Interrupt
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; Service Routines (ISRs) right here!
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global isr0
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global isr1
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global isr2
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global isr3
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global isr4
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global isr5
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global isr6
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global isr7
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global isr8
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global isr9
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global isr10
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global isr11
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global isr12
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global isr13
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global isr14
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global isr15
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global isr16
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global isr17
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global isr18
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global isr19
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global isr20
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global isr21
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global isr22
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global isr23
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global isr24
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global isr25
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global isr26
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global isr27
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global isr28
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global isr29
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global isr30
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global isr31
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2010-08-09 11:47:51 +00:00
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global isrsyscall
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2010-07-31 15:53:30 +00:00
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; 0: Divide By Zero Exception
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isr0:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2011-07-30 17:28:09 +02:00
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push byte 0 ; pseudo error code
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2010-07-31 15:53:30 +00:00
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push byte 0
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 1: Debug Exception
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isr1:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2011-07-30 17:28:09 +02:00
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push byte 0 ; pseudo error code
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2010-07-31 15:53:30 +00:00
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push byte 1
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 2: Non Maskable Interrupt Exception
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isr2:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2011-07-30 17:28:09 +02:00
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push byte 0 ; pseudo error code
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2010-07-31 15:53:30 +00:00
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push byte 2
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 3: Int 3 Exception
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isr3:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2011-07-30 17:28:09 +02:00
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push byte 0 ; pseudo error code
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2010-07-31 15:53:30 +00:00
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push byte 3
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 4: INTO Exception
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isr4:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2011-07-30 17:28:09 +02:00
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push byte 0 ; pseudo error code
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2010-07-31 15:53:30 +00:00
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push byte 4
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 5: Out of Bounds Exception
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isr5:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2011-07-30 17:28:09 +02:00
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push byte 0 ; pseudo error code
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2010-07-31 15:53:30 +00:00
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push byte 5
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 6: Invalid Opcode Exception
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isr6:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2011-07-30 17:28:09 +02:00
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push byte 0 ; pseudo error code
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2010-07-31 15:53:30 +00:00
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push byte 6
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 7: Coprocessor Not Available Exception
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isr7:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2011-07-30 17:28:09 +02:00
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push byte 0 ; pseudo error code
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2010-07-31 15:53:30 +00:00
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push byte 7
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 8: Double Fault Exception (With Error Code!)
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isr8:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2010-07-31 15:53:30 +00:00
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push byte 8
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 9: Coprocessor Segment Overrun Exception
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isr9:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2011-07-30 17:28:09 +02:00
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push byte 0 ; pseudo error code
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2010-07-31 15:53:30 +00:00
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push byte 9
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 10: Bad TSS Exception (With Error Code!)
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isr10:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2010-07-31 15:53:30 +00:00
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push byte 10
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 11: Segment Not Present Exception (With Error Code!)
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isr11:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2010-07-31 15:53:30 +00:00
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push byte 11
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 12: Stack Fault Exception (With Error Code!)
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isr12:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2010-07-31 15:53:30 +00:00
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push byte 12
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 13: General Protection Fault Exception (With Error Code!)
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isr13:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2010-07-31 15:53:30 +00:00
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push byte 13
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 14: Page Fault Exception (With Error Code!)
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isr14:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2010-07-31 15:53:30 +00:00
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push byte 14
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 15: Reserved Exception
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isr15:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2011-07-30 17:28:09 +02:00
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push byte 0 ; pseudo error code
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2010-07-31 15:53:30 +00:00
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push byte 15
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 16: Floating Point Exception
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isr16:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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; Therefore, the interrupt flag (IF) is already cleared.
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; cli
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2011-07-30 17:28:09 +02:00
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push byte 0 ; pseudo error code
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2010-07-31 15:53:30 +00:00
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push byte 16
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2011-07-30 17:28:09 +02:00
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jmp common_stub
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2010-07-31 15:53:30 +00:00
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; 17: Alignment Check Exception
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isr17:
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2010-08-09 11:47:51 +00:00
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; isr0 - isr31 are registered as "Interrupt Gate"
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|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 17
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 18: Machine Check Exception
|
|
|
|
isr18:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 18
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 19: Reserved
|
|
|
|
isr19:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 19
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 20: Reserved
|
|
|
|
isr20:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 20
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 21: Reserved
|
|
|
|
isr21:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 21
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 22: Reserved
|
|
|
|
isr22:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 22
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 23: Reserved
|
|
|
|
isr23:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 23
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 24: Reserved
|
|
|
|
isr24:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 24
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 25: Reserved
|
|
|
|
isr25:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 25
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 26: Reserved
|
|
|
|
isr26:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 26
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 27: Reserved
|
|
|
|
isr27:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 27
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 28: Reserved
|
|
|
|
isr28:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 28
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 29: Reserved
|
|
|
|
isr29:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 29
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 30: Reserved
|
|
|
|
isr30:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 30
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 31: Reserved
|
|
|
|
isr31:
|
2010-08-09 11:47:51 +00:00
|
|
|
; isr0 - isr31 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 31
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
2010-08-09 11:47:51 +00:00
|
|
|
extern syscall_handler
|
|
|
|
|
|
|
|
; used to realize system calls
|
2012-09-10 05:34:18 -07:00
|
|
|
; by entering the handler, the interrupt flag is not cleared
|
2010-08-09 11:47:51 +00:00
|
|
|
isrsyscall:
|
2012-09-10 05:34:18 -07:00
|
|
|
cli
|
2011-08-02 12:33:08 -07:00
|
|
|
push es
|
2012-09-10 05:34:18 -07:00
|
|
|
push ds
|
2010-08-17 09:59:29 +00:00
|
|
|
push ebp
|
|
|
|
push edi
|
|
|
|
push esi
|
|
|
|
push edx
|
|
|
|
push ecx
|
|
|
|
push ebx
|
|
|
|
push eax
|
2012-09-10 05:34:18 -07:00
|
|
|
|
|
|
|
; set kernel data segmenets
|
2012-08-24 14:42:37 +02:00
|
|
|
mov ax, 0x10
|
|
|
|
mov ds, ax
|
|
|
|
mov es, ax
|
|
|
|
mov eax, [esp]
|
2012-09-10 05:34:18 -07:00
|
|
|
sti
|
|
|
|
|
2010-08-09 11:47:51 +00:00
|
|
|
call syscall_handler
|
2012-09-10 05:34:18 -07:00
|
|
|
|
|
|
|
cli
|
2010-08-17 09:59:29 +00:00
|
|
|
add esp, 4 ; eax contains the return value
|
2012-09-10 05:34:18 -07:00
|
|
|
; => we did not restore eax
|
2010-08-17 09:59:29 +00:00
|
|
|
pop ebx
|
|
|
|
pop ecx
|
|
|
|
pop edx
|
|
|
|
pop esi
|
|
|
|
pop edi
|
|
|
|
pop ebp
|
2011-08-02 12:33:08 -07:00
|
|
|
pop ds
|
2012-09-10 05:34:18 -07:00
|
|
|
pop es
|
2011-03-02 06:28:50 +01:00
|
|
|
iret
|
|
|
|
|
2010-07-31 15:53:30 +00:00
|
|
|
global irq0
|
|
|
|
global irq1
|
|
|
|
global irq2
|
|
|
|
global irq3
|
|
|
|
global irq4
|
|
|
|
global irq5
|
|
|
|
global irq6
|
|
|
|
global irq7
|
|
|
|
global irq8
|
|
|
|
global irq9
|
|
|
|
global irq10
|
|
|
|
global irq11
|
|
|
|
global irq12
|
|
|
|
global irq13
|
|
|
|
global irq14
|
|
|
|
global irq15
|
2010-11-29 02:39:10 +00:00
|
|
|
global irq16
|
|
|
|
global irq17
|
|
|
|
global irq18
|
|
|
|
global irq19
|
|
|
|
global irq20
|
|
|
|
global irq21
|
|
|
|
global irq22
|
|
|
|
global irq23
|
2010-11-04 20:15:39 +00:00
|
|
|
global apic_timer
|
|
|
|
global apic_lint0
|
|
|
|
global apic_lint1
|
|
|
|
global apic_error
|
|
|
|
global apic_svr
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 32: IRQ0
|
|
|
|
irq0:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 32
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 33: IRQ1
|
|
|
|
irq1:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 33
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 34: IRQ2
|
|
|
|
irq2:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 34
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 35: IRQ3
|
|
|
|
irq3:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 35
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 36: IRQ4
|
|
|
|
irq4:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 36
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 37: IRQ5
|
|
|
|
irq5:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 37
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 38: IRQ6
|
|
|
|
irq6:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 38
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 39: IRQ7
|
|
|
|
irq7:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 39
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 40: IRQ8
|
|
|
|
irq8:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 40
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 41: IRQ9
|
|
|
|
irq9:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 41
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 42: IRQ10
|
|
|
|
irq10:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 42
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 43: IRQ11
|
|
|
|
irq11:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 43
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 44: IRQ12
|
|
|
|
irq12:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 44
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 45: IRQ13
|
|
|
|
irq13:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 45
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 46: IRQ14
|
|
|
|
irq14:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 46
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
|
|
|
; 47: IRQ15
|
|
|
|
irq15:
|
2010-08-09 11:47:51 +00:00
|
|
|
; irq0 - irq15 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-07-31 15:53:30 +00:00
|
|
|
push byte 47
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-07-31 15:53:30 +00:00
|
|
|
|
2010-11-29 02:39:10 +00:00
|
|
|
; 48: IRQ16
|
|
|
|
irq16:
|
|
|
|
; irq16 - irq23 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 48
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-29 02:39:10 +00:00
|
|
|
|
|
|
|
; 49: IRQ17
|
|
|
|
irq17:
|
|
|
|
; irq16- irq23 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 49
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-29 02:39:10 +00:00
|
|
|
|
|
|
|
; 50: IRQ18
|
|
|
|
irq18:
|
|
|
|
; irq16 - irq23 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 50
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-29 02:39:10 +00:00
|
|
|
|
|
|
|
; 51: IRQ19
|
|
|
|
irq19:
|
|
|
|
; irq16 - irq23 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 51
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-29 02:39:10 +00:00
|
|
|
|
|
|
|
; 52: IRQ20
|
|
|
|
irq20:
|
|
|
|
; irq16- irq23 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 52
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-29 02:39:10 +00:00
|
|
|
|
|
|
|
; 53: IRQ21
|
|
|
|
irq21:
|
|
|
|
; irq16 - irq23 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-19 09:10:12 +02:00
|
|
|
push byte 0 ; error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 53
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-29 02:39:10 +00:00
|
|
|
|
|
|
|
; 54: IRQ22
|
|
|
|
irq22:
|
|
|
|
; irq16- irq23 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 54
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-29 02:39:10 +00:00
|
|
|
|
|
|
|
; 55: IRQ23
|
|
|
|
irq23:
|
|
|
|
; irq16 - irq23 are registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 55
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-29 02:39:10 +00:00
|
|
|
|
2010-11-04 20:15:39 +00:00
|
|
|
apic_timer:
|
|
|
|
; apic timer is registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 123
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-04 20:15:39 +00:00
|
|
|
|
|
|
|
apic_lint0:
|
|
|
|
; lint0 is registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 124
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-04 20:15:39 +00:00
|
|
|
|
|
|
|
apic_lint1:
|
|
|
|
; lint1 is registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 125
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-04 20:15:39 +00:00
|
|
|
|
|
|
|
apic_error:
|
|
|
|
; LVT error interrupt is registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-29 02:39:10 +00:00
|
|
|
push byte 126
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-04 20:15:39 +00:00
|
|
|
|
|
|
|
apic_svr:
|
|
|
|
; SVR is registered as "Interrupt Gate"
|
|
|
|
; Therefore, the interrupt flag (IF) is already cleared.
|
|
|
|
; cli
|
2011-07-30 17:28:09 +02:00
|
|
|
push byte 0 ; pseudo error code
|
2010-11-26 05:33:02 +00:00
|
|
|
push byte 127
|
2011-07-30 17:28:09 +02:00
|
|
|
jmp common_stub
|
2010-11-04 20:15:39 +00:00
|
|
|
|
2011-07-21 09:59:29 +02:00
|
|
|
extern irq_handler
|
2012-05-21 15:04:05 +02:00
|
|
|
extern get_current_stack
|
|
|
|
extern finish_task_switch
|
2011-07-21 09:59:29 +02:00
|
|
|
|
2012-05-21 15:04:05 +02:00
|
|
|
global switch_context
|
|
|
|
ALIGN 4
|
|
|
|
switch_context:
|
|
|
|
; create on the stack a pseudo interrupt
|
|
|
|
; afterwards, we switch to the task with iret
|
2012-08-24 14:42:37 +02:00
|
|
|
; we already in kernel space => no pushing of SS required
|
2012-05-21 15:04:05 +02:00
|
|
|
mov eax, [esp+4] ; on the stack is already the address to store the old esp
|
|
|
|
pushf ; EFLAGS
|
|
|
|
push DWORD 0x8 ; CS
|
|
|
|
push DWORD rollback ; EIP
|
2012-06-10 08:05:24 +02:00
|
|
|
push DWORD 0x0 ; Interrupt number
|
|
|
|
push DWORD 0x00edbabe ; Error code
|
2012-05-21 15:04:05 +02:00
|
|
|
pusha ; Registers...
|
2012-09-10 05:34:18 -07:00
|
|
|
push 0x10 ; kernel data segment
|
|
|
|
push 0x10 ; kernel data segment
|
2012-05-21 15:04:05 +02:00
|
|
|
|
|
|
|
jmp common_switch
|
|
|
|
|
|
|
|
ALIGN 4
|
|
|
|
rollback:
|
|
|
|
ret
|
|
|
|
|
|
|
|
ALIGN 4
|
2011-07-30 17:28:09 +02:00
|
|
|
common_stub:
|
2010-07-31 15:53:30 +00:00
|
|
|
pusha
|
2012-08-24 14:42:37 +02:00
|
|
|
push es
|
|
|
|
push ds
|
|
|
|
mov ax, 0x10
|
|
|
|
mov es, ax
|
|
|
|
mov ds, ax
|
2010-08-09 11:47:51 +00:00
|
|
|
|
2011-07-19 09:10:12 +02:00
|
|
|
; use the same handler for interrupts and exceptions
|
2010-08-09 11:47:51 +00:00
|
|
|
push esp
|
|
|
|
call irq_handler
|
|
|
|
add esp, 4
|
|
|
|
|
2012-05-21 15:04:05 +02:00
|
|
|
cmp eax, 0
|
|
|
|
je no_context_switch
|
|
|
|
|
|
|
|
common_switch:
|
|
|
|
mov [eax], esp ; store old esp
|
|
|
|
call get_current_stack ; get new esp
|
|
|
|
xchg eax, esp
|
|
|
|
|
2012-07-18 20:54:04 +02:00
|
|
|
; set task switched flag
|
|
|
|
mov eax, cr0
|
|
|
|
or eax, 8
|
|
|
|
mov cr0, eax
|
|
|
|
|
2012-05-21 15:04:05 +02:00
|
|
|
; call cleanup code
|
|
|
|
call finish_task_switch
|
|
|
|
|
|
|
|
no_context_switch:
|
2012-08-24 14:42:37 +02:00
|
|
|
pop ds
|
|
|
|
pop es
|
2010-07-31 15:53:30 +00:00
|
|
|
popa
|
2011-07-19 09:10:12 +02:00
|
|
|
add esp, 8
|
2010-07-31 15:53:30 +00:00
|
|
|
iret
|
|
|
|
|
2012-07-19 22:07:59 +02:00
|
|
|
SECTION .data
|
|
|
|
global boot_stack
|
|
|
|
ALIGN 4096
|
|
|
|
boot_stack:
|
|
|
|
TIMES (MAX_CORES*KERNEL_STACK_SIZE) DB 0xcd
|
|
|
|
|
2011-02-16 21:19:44 +01:00
|
|
|
SECTION .note.GNU-stack noalloc noexec nowrite progbits
|