The great 64-bit rewrite

* We did loose tasking and only have a paging skeleton, but hey it took like 4 months so i'm happy that there's something :p

kernel/linker.ld

@@ -1,35 +1,50 @@
-OUTPUT_FORMAT("elf32-i386")
-OUTPUT_ARCH("i386");
+OUTPUT_FORMAT(elf64-x86-64)
+OUTPUT_ARCH(i386:x86-64);
 ENTRY(_start)
 
-/* Define sections */
+/* Program headers for MMU permissions */
+PHDRS {
+	text	PT_LOAD	FLAGS((1 << 0) | (1 << 2));	/* xr */
+	rodata	PT_LOAD FLAGS((1 << 2));		/* ro */
+	data	PT_LOAD FLAGS((1 << 1) | (1 << 2));	/* rw */
+}
+
 SECTIONS {
-	. = 0x00100000;
+	. = 0xffffffff80000000;
+
 	__kernel_start = .;
+	__kernel_text_start = .;
+	.text : {
+		*(.text .text.*)
+	} :text
+	__kernel_text_end = .;
 
-	.boot ALIGN(4K) : {
-		*(.multiboot)
-		*(.boot)
-	}
+	. = ALIGN(CONSTANT(MAXPAGESIZE));
 
-	. += 0xC0000000;
+	__kernel_rodata_start = .;
+	.rodata : {
+		*(.rodata .rodata.*)
+	} :rodata
+	__kernel_rodata_end = .;
 
-	.text ALIGN(4K) : AT(ADDR(.text) - 0xC0000000) {
-		*(.text)
-	}
+	. = ALIGN(CONSTANT(MAXPAGESIZE));
 
-	.rodata ALIGN(4K) : AT(ADDR(.rodata) - 0xC0000000) {
-		*(.rodata)
-	}
+	__kernel_data_start = .;
+	.data : {
+		*(.data .data.*)
+	} :data
 
-	.data ALIGN(4K) : AT(ADDR(.data) - 0xC0000000) {
-		*(.data)
-	}
-
-	.bss ALIGN(4K) : AT(ADDR(.bss) - 0xC0000000) {
+	/* NOTE: .bss should be the last thing mapped to :data */
+	.bss : {
+		*(.bss .bss.*)
 		*(COMMON)
-		*(.bss)
-	}
+	} :data
+	__kernel_data_end = .;
 
+	/* Discard .note* and .eh_frame* (wtf is an eh_frame??) to prevent issues */
+	/DISCARD/ : {
+		*(.eh_frame)
+		*(.note .note.*)
+	}
 	__kernel_end = .;
 }