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- /*
- * crt0-efi-aarch64.S - PE/COFF header for AArch64 EFI applications
- *
- * Copright (C) 2014 Linaro Ltd. <[email protected]>
- *
- * 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
- .type _start,%function
- _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 _entry
- 0: ldp x29, x30, [sp], #32
- ret
- // hand-craft a dummy .reloc section so EFI knows it's a relocatable executable:
-
- .data
- dummy: .4byte 0
- #define IMAGE_REL_ABSOLUTE 0
- .section .reloc, "a"
- label1:
- .4byte dummy-label1 // Page RVA
- .4byte 12 // Block Size (2*4+2*2), must be aligned by 32 Bits
- .2byte (IMAGE_REL_ABSOLUTE<<12) + 0 // reloc for dummy
- .2byte (IMAGE_REL_ABSOLUTE<<12) + 0 // reloc for dummy
- #if defined(__ELF__) && defined(__linux__)
- .section .note.GNU-stack,"",%progbits
- #endif
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