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feat: настроено окружение и написано пару строчек кода

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ElectronixTM
2024-11-05 15:05:20 -05:00
parent b161ff5465
commit 907f13541a
4 changed files with 77 additions and 0 deletions
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7
09-keyboard/Makefile Normal file
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obj-m += task1.o
modules:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
clean:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean

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09-keyboard/tags Normal file
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!_TAG_FILE_FORMAT 2 /extended format; --format=1 will not append ;" to lines/
!_TAG_FILE_SORTED 1 /0=unsorted, 1=sorted, 2=foldcase/
!_TAG_OUTPUT_EXCMD mixed /number, pattern, mixed, or combineV2/
!_TAG_OUTPUT_FILESEP slash /slash or backslash/
!_TAG_OUTPUT_MODE u-ctags /u-ctags or e-ctags/
!_TAG_PATTERN_LENGTH_LIMIT 96 /0 for no limit/
!_TAG_PROC_CWD /home/electronixtm/code/CA/09-keyboard/ //
!_TAG_PROGRAM_AUTHOR Universal Ctags Team //
!_TAG_PROGRAM_NAME Universal Ctags /Derived from Exuberant Ctags/
!_TAG_PROGRAM_URL https://ctags.io/ /official site/
!_TAG_PROGRAM_VERSION 5.9.0 //
IDT_rebuild task1.c /^static int __init IDT_rebuild(void)$/;" f typeref:typename:int __init file:
IDT_restore task1.c /^static void __exit IDT_restore(void)$/;" f typeref:typename:void __exit file:
INCLUDE_VERMAGIC task1.mod.c /^#define INCLUDE_VERMAGIC$/;" d file:
____versions task1.mod.c /^static const struct modversion_info ____versions[]$/;" v typeref:typename:const struct modversion_info[]__used __section ("__versions") file:
clean Makefile /^clean: $/;" t
global test.asm /^global interrupt_wrapper$/;" l
interrupt_wrapper test.asm /^interrupt_wrapper:$/;" l
kern_page task1.c /^static u64 kern_page; \/\/ u64 - macro meaning unsigned 64 bits$/;" v typeref:typename:u64 file:
modules Makefile /^modules:$/;" t
Лабораторная работа 9 README.md /^# Лабораторная работа 9$/;" c
Обмен ЭВМ с клавиатурой README.md /^## Обмен ЭВМ с клавиатурой$/;" s chapter:Лабораторная работа 9

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09-keyboard/task1.c Normal file
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#include<linux/module.h>
#include<linux/printk.h>
#include<linux/mm.h>
#include<asm/desc.h>
#include<linux/kernel.h>
#include<asm/traps.h>
static u64 kern_page; // u64 - macro meaning unsigned 64 bits
static gate
static struct desc_ptr default_idtr; // to save existing idtr
static int __init IDT_rebuild(void)
{
struct desc_ptr idtr; // here we're going to store our new interupts table
pr_info("---IDT-REBUILD INITIATED---");
store_idt(&default_idtr); // getting current idtr and store it
pr_info("obtained idtr");
pr_info("allocating new memory page");
kern_page = __get_free_page(GFP_KERNEL);
if (!kern_page)
{
return -ENOMEM;
}
idtr.address = kern_page; // going to store
idtr.size = default_idtr.size;
return 0;
}
static void __exit IDT_restore(void)
{
struct desc_ptr idtr;
store_idt(&idtr);
if (idtr.address != default_idtr.address || idtr.size != default_idtr.size)
{
load_idt(&default_idtr);
free_page(kern_page);
}
}
module_init(IDT_rebuild);
module_exit(IDT_restore);
MODULE_LICENSE("GPL");

5
09-keyboard/test.asm Normal file
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global interrupt_wrapper
section .text
interrupt_wrapper: