D:/COBE-Packet/cobe/system/syscalls.c

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#include <syscalls.h>
#include <multitasking.h>
#include <stdio.h>
#include <io.h>
#include <stdint.h>
#include <cmos.h>
#include <pgng.h>
#include <fdc.h>
#include <fat.h>

extern struct paging_directory* kernel_map;
extern new_task_t* current_task;
extern multiboot_info_t* mbinfo;
extern char curr_dir[40];

cpu_regs* syscall(cpu_regs* cpu) {
        //----------Aktiviere Interrupts in den Syscalls----------
        __asm("sti");
        
        switch(cpu->eax)
        {
                
                case 0x1:
                switch(cpu->edx) {                    //Input/Output
                        case 0x0: kputchar((char)cpu->ebx); break;
                        case 0x1: kputx(cpu->ebx, cpu->ecx); break;
                        case 0x2: kputstring((char*)cpu->ebx); break;
                        case 0x3: kgets((char*)cpu->ebx); break;
                        default: break;
                }
                break;
                
                case 0x2:
                outb(0x64, 0xFE);               //----------0xFE in den Port 0x64 startet die CPU neu----------
                break;
                
                case 0x3: 
                switch(cpu->edx) {                 //Prozesse
                        case 0x1: kill_task(cpu->ecx);
                        default: break;
                }
                break;
                
                case 0x4:
                break;
                
                case 0x5:
                show_floppys();
                break;
                
                case 0x6:                         //Dateien
                switch(cpu->ebx)
                {
                        case 0x1: fat_show_directory(); break;
                        case 0x2: fat_change_directory((char*)cpu->ecx); break;
                        case 0x3: kstrcpy(curr_dir,(char*)cpu->ecx); break;
                        case 0x4: copy_sector((uint8_t)cpu->ebx, (uint8_t)cpu->ecx, (uint8_t)cpu->edx, (uint8_t)cpu->esi, (void*)cpu->edi, (bool)cpu->ebp); break;
                        case 0x5: fat_mkdir((char*)cpu->ecx); break;
                        case 0x6: fat_del((char*)cpu->ecx); break;
                        default: break;
                }
                break;
                
                default: 
                break;
                
        }
        
        //----------Gebe den neuen CPU-Zustand zurück----------
        return cpu;
}

/*****SYSCALL-NUMMERN*****
//      
//      1: print
//      2: restart cpu
//      3: get keys
//      4: print number
//      5: show floppys
//  6: copy sector
*************************/