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[USER] User mode code execution

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This commit is contained in:
Thomas Lovén
2016-11-26 13:21:51 +01:00
parent f63afbb3b1
commit 4f76557b73
7 changed files with 71 additions and 20 deletions
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18
kernel/boot/kmain.c
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@@ -6,12 +6,14 @@
#include <process.h>
#include <cpu.h>
#include <timer.h>
#include <string.h>
void thread_function()
{
int i = 0;
while(1)
{
;
i++;
}
}
@@ -30,10 +32,18 @@ int kmain(uint64_t multiboot_magic, void *multiboot_data)
pit_init();
process_t *p1 = process_spawn(0);
thread_t *t1 = new_thread(thread_function);
process_attach(p1, t1);
uint64_t addr = 0x200000;
thread_t *th = new_thread((void *)addr, 1);
scheduler_insert(t1);
uintptr_t page = pmm_alloc();
// Write thread code to address
vmm_set_page(p1->P4, addr, page, PAGE_PRESENT | PAGE_WRITE | PAGE_USER);
memcpy(P2V(page), thread_function, PAGE_SIZE);
// Map a user stack space
vmm_set_page(p1->P4, USERSPACE_TOP-PAGE_SIZE, pmm_alloc(), PAGE_PRESENT | PAGE_WRITE | PAGE_USER);
process_attach(p1, th);
scheduler_insert(th);
asm("sti");
debug_info("BOOT COMPLETE\n");