user program (still many #PF)

include/arch/x86.h

@@ -10,7 +10,6 @@ void wrmsr(uint32_t msr, uint64_t value);
 bool x86_has_msr();
 void x86_arch_init();
 
-
 void x86_cpu_identification();
 int cpuid_get_vendor_string(char* str);
 

include/config.h

@@ -43,6 +43,7 @@
 /* user */
 #define USER_STACK_TOP 0x80000000
 #define USER_STACK_PAGES 16 // 16*4096 = 64kb
+#define USER_CODE_START 0x400000 // like linux
 
 /* paging */
 #define PAGING_MAX_PHYS 0x200000000

include/mem/vmm.h

@@ -22,6 +22,8 @@ void vmm_unmap(uint64_t* pml4, uint64_t virt);
 void* vmm_map(uint64_t* pml4, uint64_t virt, uint64_t flags);
 uint64_t* vmm_create_address_space();
 uint64_t vmm_virt_to_phys(uint64_t* pml4, uint64_t virt);
+uintptr_t vmm_alloc_user_stack(uint64_t* pml4);
+uintptr_t vmm_alloc_user_code(uint64_t* pml4, void* code_addr, uint64_t code_size);
 
 #define VMM_USER_SPACE_START 0x0000000000001000 
 #define VMM_USER_SPACE_END   0x00007FFFFFFFF000

include/sched/process.h

@@ -10,6 +10,7 @@
 #include <stddef.h>
 #include <config.h>
 #include <stdint.h>
+#include <limine.h>
 
 typedef enum {
     READY,
@@ -37,4 +38,6 @@ void process_exit(void);
 
 void process_display_list(struct process* processes_list);
 
+void process_create_user(struct limine_file* file);
+
 #endif