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/*
* crt0-efi-aarch64.S - PE/COFF header for AArch64 EFI applications
*
* Copright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice and this list of conditions, without modification.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License as published by the Free Software Foundation;
* either version 2 of the License, or (at your option) any later version.
*/
.text
.align 12
.globl _start
_start:
stp x29, x30, [sp, #-32]!
mov x29, sp
stp x0, x1, [sp, #16]
mov x2, x0
mov x3, x1
adr x0, ImageBase
adrp x1, _DYNAMIC
add x1, x1, #:lo12:_DYNAMIC
bl _relocate
cbnz x0, 0f
ldp x0, x1, [sp, #16]
bl efi_main
0: ldp x29, x30, [sp], #32
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 12 // Block Size (2*4+2*2), must be aligned by 32 Bits
.word (IMAGE_REL_ABSOLUTE<<12) + 0 // reloc for dummy
.word (IMAGE_REL_ABSOLUTE<<12) + 0 // reloc for dummy
#if defined(__ELF__) && defined(__linux__)
.section .note.GNU-stack,"",%progbits
#endif
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