1/*- 2 * Copyright (C) 1999 Hewlett-Packard Co. 3 * Contributed by David Mosberger <davidm@hpl.hp.com>. 4 * Copyright (C) 2005 Intel Co. 5 * Contributed by Fenghua Yu <fenghua.yu@intel.com>. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of Hewlett-Packard Co. nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 29 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34/* 35 * crt0-efi-x86_64.S - x86_64 EFI startup code. 36 * $FreeBSD: head/sys/boot/efi/loader/arch/amd64/start.S 282727 2015-05-10 13:24:26Z ian $ 37 */ 38 39 .text 40 .align 4 41 42 .globl _start 43_start: 44 subq $8, %rsp 45 pushq %rcx 46 pushq %rdx 47 480: 49 lea ImageBase(%rip), %rdi 50 lea _DYNAMIC(%rip), %rsi 51 52 popq %rcx 53 popq %rdx 54 pushq %rcx 55 pushq %rdx 56 call self_reloc 57 58 popq %rdi 59 popq %rsi 60 61 call efi_main 62 addq $8, %rsp 63 64.exit: 65 ret 66 67 /* 68 * hand-craft a dummy .reloc section so EFI knows it's a relocatable 69 * executable: 70 */ 71 72 .data 73 .section .reloc, "a" 74 .long 0 75 .long 10 76 .word 0 77