u-boot/arch/x86/lib/crt0_x86_64_efi.S
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

51 lines
893 B
ArmAsm

/* SPDX-License-Identifier: BSD-3-Clause */
/*
* 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.
*/
.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 */