gets the memory map from GRUB

kernel/arch/boot.s

@@ -3,7 +3,7 @@
 ; We set up some parameters and then pass the execution to our kmain
 
 global loader 				; entry symbol for ELF
-extern kmain
+extern _main
 
 MAGIC_NUMBER 	equ 0x1BADB002		; magic number constant
 FLAGS		equ 0x3
@@ -30,7 +30,10 @@ section .text
 loader:
 	mov esp, kernel_stack + KERNEL_STACK_SIZE ; move the top of the stack into esp
 
-	call kmain ; pass execution over to our kmain function, where all of the real stuff is done
+	push eax
+	push ebx
+
+	call _main ; pass execution over to our _main function, where all of the real stuff is done
 
 	; Should the system exit, we clear the interrupt flag
 	; and do an infinite loop of nothing

kernel/arch/link.ld

@@ -19,6 +19,7 @@ SECTIONS
 	 */
 	.text BLOCK(4K) : ALIGN(4K) /* The first section we want is the text section, this is where most code is */
 	{
+		text_start = .;
 		*(.multiboot) /* Multiboot needs to be early in the file, required by grub */
 		*(.text) /* The text section */
 	}
@@ -33,12 +34,16 @@ SECTIONS
 	.data BLOCK(4K) : ALIGN(4K)
 	{
 		*(.data)
+		end_data = .;
 	}
 
 	/* BSS */
 	.bss BLOCK(4K) : ALIGN(4K)
 	{
+		sbss = .;
 		*(COMMON)
 		*(.bss)
+		ebss = .;
+		endkernel = .;
 	}
 }

kernel/arch/paging.c

@@ -0,0 +1,6 @@
+#include <stdint.h>
+
+extern uint32_t endkernel; // found in link.ld
+
+
+