49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
#include "userland.h"
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#include "debug.h"
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#include "paging.h"
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#include "elf.h"
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#include "launch_process.h"
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struct userlands_data *userland_data = (struct userlands_data *) 0x3020000;
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int create_process(int uid, char *data_start)
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{
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create_new_userland_page(uid);
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DEBUG_INFO("CREATE PROCESS");
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void *process_page_dir_adress = userland_data->userland_data[uid].page_directories;
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// load cr3
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asm volatile (" \
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mov %0, %%eax \n \
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mov %%eax, %%cr3" : "+r" (process_page_dir_adress));
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// Allocate stack
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allocate_new_page(uid, 0x7FFFF000);
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allocate_new_page(uid, 0x7FFFE000);
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allocate_new_page(uid, 0x7FFFD000);
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// TODO : create data seg by process
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// load elf
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load_elf(data_start, uid);
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return 0;
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}
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int switch_to_process(int uid)
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{
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DEBUG_INFO("SWITCHING TO PROCESS");
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void *process_page_dir_adress = userland_data->userland_data[uid].page_directories;
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// load cr3
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asm volatile (" \
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mov %0, %%eax \n \
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mov %%eax, %%cr3" : "+r" (process_page_dir_adress));
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// TODO : once data by process has been implemented, load the right one
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launch_process(0x28, 0x20, 0x18, 0x20);
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return 0;
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}
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