From 0d916c34c4d2c15f233fac8ffefa8ee41f074b18 Mon Sep 17 00:00:00 2001
From: Alex Smith <alex@alex-smith.me.uk>
Date: Mon, 11 Jun 2012 12:49:14 +0100
Subject: [PATCH] x86_64: added linker script for the kernel.

* Based on the x86 one, changes made to match the default GCC x86_64 linker
  script and correct kernel load address added.
* Not tested yet as the kernel doesn't fully compile.
---
 src/system/ldscripts/x86_64/kernel.ld | 55 +++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 src/system/ldscripts/x86_64/kernel.ld

diff --git a/src/system/ldscripts/x86_64/kernel.ld b/src/system/ldscripts/x86_64/kernel.ld
new file mode 100644
index 0000000000..f3db82d1d8
--- /dev/null
+++ b/src/system/ldscripts/x86_64/kernel.ld
@@ -0,0 +1,55 @@
+OUTPUT_FORMAT("elf64-x86-64")
+OUTPUT_ARCH("i386:x86-64")
+
+ENTRY(_start)
+SECTIONS
+{
+	. = 0xFFFFFF8000000000 + SIZEOF_HEADERS;
+
+	.interp : { *(.interp) }
+	.hash : { *(.hash) }
+	.dynsym : { *(.dynsym) }
+	.dynstr : { *(.dynstr) }
+	.rela.text : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
+	.rela.data : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
+	.rela.rodata : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
+	.rela.got : { *(.rela.got) }
+	.rela.ctors : { *(.rela.ctors) }
+	.rela.dtors : { *(.rela.dtors) }
+	.rela.init : { *(.rela.init) }
+	.rela.fini : { *(.rela.fini) }
+	.rela.bss : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
+	.rela.plt : { *(.rela.plt) }
+	.init : { *(.init) } =0x90909090
+	.plt : { *(.plt) }
+
+	/* text/read-only data */
+	.text :	{ *(.text .text.* .gnu.linkonce.t.*) } =0x90909090
+
+	.rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
+
+	/* writable data  */
+	. = ALIGN(0x1000);
+	__data_start = .;
+	.data : { *(.data .data.* .gnu.linkonce.d.*) }
+
+	. = ALIGN(0x4);
+	__ctor_list = .;
+	.ctors : { *(.ctors) }
+	__ctor_end = .;
+	__dtor_list = .;
+	.dtors : { *(.dtors) }
+	__dtor_end = .;
+	.got : { *(.got.plt) *(.got) }
+	.dynamic : { *(.dynamic) }
+	
+	/* uninitialized data (in same segment as writable data) */
+	__bss_start = .;
+	.bss : { *(.bss .bss.* .gnu.linkonce.b.*) }
+
+	. = ALIGN(0x1000);
+	_end = . ;
+
+	/* Strip unnecessary stuff */
+	/DISCARD/ : { *(.comment .note .eh_frame) }
+}