Elf segment copying

src/elf.c

+/*
+  elf.c
+
+  Mainly, contains the elf loading code
+*/
+
+#include "mem.h"
+
+void load_elf(elf_header* elf_start)
+{
+    // The elf will get its own memory space.
+    page_directory_entry* pgdir = page_new_directory();
+
+    // loop through and copy memory segments
+    for (int i = 0; i < elf_start->ph_entry_count; i++)
+    {
+        // get this section header
+        elf_program_header* ph;
+        ph = elf_start + elf_start->ph_table_offset + (i * elf_start->ph_entry_size);
+
+        // map and copy
+        for (pg = ph->p_vaddr & 0xfffff000; pg - ph->p_vaddr < ph->memory_segment_size; pg+=0x1000)
+        {
+            real_page = page_allocate(pg);
+
+            start = (pg > ph->p_vaddr) ? pg : ph->p_vaddr;
+            end = (pg + 0x1000 < ph->p_vaddr + ph->file_segment_size) ? pg + 0x1000 : ph->p_vaddr + ph->file_segment_size;
+
+            size = end - start;
+            offset = (pg > ph->p_vaddr) ? 0 : ph->p_vaddr - pg;
+
+            // do some memcpy stuff
+            memcpy(real_page + offset, start, size);
+
+            elf_start + p->ph_offset
+        }
+    }
+
+}

src/mem.c

@@ -148,14 +148,17 @@ page_directory_entry* mem_init_kern_tables(multiboot_memory_map* mmap, multiboot
 // that that address points to valid memory
 void page_map(page_directory_entry[] pgdir, void* page_start)
 {
+    void* page = 0;
     if (pgdir[page_start>>22] & 0xfffff == 0)
     {
         pgdir[page_start>>22] |= page_new_table();
     }
     if (pgdir[page_start>>22][(page_start>>12)%1024] & 0xfffff == 0)
     {
-        pgdir[page_start>>22][(page_start>>12)%1024] |= page_allocate();
+        page = page_allocate();
+        pgdir[page_start>>22][(page_start>>12)%1024] |= page;
     }
+    return page;
 }