/*
|
* crt0-efi-x86_64.S - x86_64 EFI startup code.
|
* Copyright (C) 1999 Hewlett-Packard Co.
|
* Contributed by David Mosberger <davidm@hpl.hp.com>.
|
* Copyright (C) 2005 Intel Co.
|
* Contributed by Fenghua Yu <fenghua.yu@intel.com>.
|
*
|
* All rights reserved.
|
* SPDX-License-Identifier: BSD-3-Clause
|
*/
|
.text
|
.align 4
|
|
.globl _start
|
_start:
|
subq $8, %rsp
|
pushq %rcx
|
pushq %rdx
|
|
0:
|
lea image_base(%rip), %rdi
|
lea _DYNAMIC(%rip), %rsi
|
|
popq %rcx
|
popq %rdx
|
pushq %rcx
|
pushq %rdx
|
call _relocate
|
|
popq %rdi
|
popq %rsi
|
|
call efi_main
|
addq $8, %rsp
|
|
.exit:
|
ret
|
|
/*
|
* hand-craft a dummy .reloc section so EFI knows it's a relocatable
|
* executable:
|
*/
|
.data
|
dummy: .long 0
|
|
#define IMAGE_REL_ABSOLUTE 0
|
.section .reloc, "a"
|
label1:
|
.long dummy-label1 /* Page RVA */
|
.long 10 /* Block Size (2*4+2) */
|
.word (IMAGE_REL_ABSOLUTE << 12) + 0 /* reloc for dummy */
|
