1*2dcd4e9eSSimon Glass/* 2*2dcd4e9eSSimon Glass * crt0-efi-x86_64.S - x86_64 EFI startup code. 3*2dcd4e9eSSimon Glass * Copyright (C) 1999 Hewlett-Packard Co. 4*2dcd4e9eSSimon Glass * Contributed by David Mosberger <davidm@hpl.hp.com>. 5*2dcd4e9eSSimon Glass * Copyright (C) 2005 Intel Co. 6*2dcd4e9eSSimon Glass * Contributed by Fenghua Yu <fenghua.yu@intel.com>. 7*2dcd4e9eSSimon Glass * 8*2dcd4e9eSSimon Glass * All rights reserved. 9*2dcd4e9eSSimon Glass * SPDX-License-Identifier: BSD-3-Clause 10*2dcd4e9eSSimon Glass */ 11*2dcd4e9eSSimon Glass .text 12*2dcd4e9eSSimon Glass .align 4 13*2dcd4e9eSSimon Glass 14*2dcd4e9eSSimon Glass .globl _start 15*2dcd4e9eSSimon Glass_start: 16*2dcd4e9eSSimon Glass subq $8, %rsp 17*2dcd4e9eSSimon Glass pushq %rcx 18*2dcd4e9eSSimon Glass pushq %rdx 19*2dcd4e9eSSimon Glass 20*2dcd4e9eSSimon Glass0: 21*2dcd4e9eSSimon Glass lea image_base(%rip), %rdi 22*2dcd4e9eSSimon Glass lea _DYNAMIC(%rip), %rsi 23*2dcd4e9eSSimon Glass 24*2dcd4e9eSSimon Glass popq %rcx 25*2dcd4e9eSSimon Glass popq %rdx 26*2dcd4e9eSSimon Glass pushq %rcx 27*2dcd4e9eSSimon Glass pushq %rdx 28*2dcd4e9eSSimon Glass call _relocate 29*2dcd4e9eSSimon Glass 30*2dcd4e9eSSimon Glass popq %rdi 31*2dcd4e9eSSimon Glass popq %rsi 32*2dcd4e9eSSimon Glass 33*2dcd4e9eSSimon Glass call efi_main 34*2dcd4e9eSSimon Glass addq $8, %rsp 35*2dcd4e9eSSimon Glass 36*2dcd4e9eSSimon Glass.exit: 37*2dcd4e9eSSimon Glass ret 38*2dcd4e9eSSimon Glass 39*2dcd4e9eSSimon Glass /* 40*2dcd4e9eSSimon Glass * hand-craft a dummy .reloc section so EFI knows it's a relocatable 41*2dcd4e9eSSimon Glass * executable: 42*2dcd4e9eSSimon Glass */ 43*2dcd4e9eSSimon Glass .data 44*2dcd4e9eSSimon Glassdummy: .long 0 45*2dcd4e9eSSimon Glass 46*2dcd4e9eSSimon Glass#define IMAGE_REL_ABSOLUTE 0 47*2dcd4e9eSSimon Glass .section .reloc, "a" 48*2dcd4e9eSSimon Glasslabel1: 49*2dcd4e9eSSimon Glass .long dummy-label1 /* Page RVA */ 50*2dcd4e9eSSimon Glass .long 10 /* Block Size (2*4+2) */ 51*2dcd4e9eSSimon Glass .word (IMAGE_REL_ABSOLUTE << 12) + 0 /* reloc for dummy */ 52