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- /* 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 Corporation
- * Contributed by Fenghua Yu <fenghua.yu@intel.com>.
- *
- * All rights reserved.
- */
- .text
- .align 4
- .globl _start
- _start:
- subq $8, %rsp
- pushq %rcx
- pushq %rdx
- mov %rcx, %r8
- mov %rdx, %r9
- lea image_base(%rip), %rcx
- lea _DYNAMIC(%rip), %rdx
- call _relocate
- popq %rdx
- popq %rcx
- testq %rax, %rax
- jnz .exit
- call efi_main
- .exit:
- addq $8, %rsp
- 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 */
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