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 */ 37 38 .text 39 .align 4 40 41 .globl _start 42_start: 43 subq $8, %rsp 44 pushq %rcx 45 pushq %rdx 46 470: 48 lea ImageBase(%rip), %rdi 49 lea _DYNAMIC(%rip), %rsi 50 51 popq %rcx 52 popq %rdx 53 pushq %rcx 54 pushq %rdx 55 call self_reloc 56 57 popq %rdi 58 popq %rsi 59 60 call efi_main 61 addq $8, %rsp 62 63.exit: 64 ret 65 66 /* 67 * hand-craft a dummy .reloc section so EFI knows it's a relocatable 68 * executable: 69 */ 70 71 .data 72 .section .reloc, "a" 73 .long 0 74 .long 10 75 .word 0 76