crt0-efi-x86_64.S revision 1.1.1.1.6.2
1 1.1.1.1.6.2 yamt /* $NetBSD: crt0-efi-x86_64.S,v 1.1.1.1.6.2 2014/05/22 11:40:57 yamt Exp $ */ 2 1.1.1.1.6.2 yamt 3 1.1.1.1.6.2 yamt /* crt0-efi-x86_64.S - x86_64 EFI startup code. 4 1.1.1.1.6.2 yamt Copyright (C) 1999 Hewlett-Packard Co. 5 1.1.1.1.6.2 yamt Contributed by David Mosberger <davidm (at) hpl.hp.com>. 6 1.1.1.1.6.2 yamt Copyright (C) 2005 Intel Co. 7 1.1.1.1.6.2 yamt Contributed by Fenghua Yu <fenghua.yu (at) intel.com>. 8 1.1.1.1.6.2 yamt 9 1.1.1.1.6.2 yamt All rights reserved. 10 1.1.1.1.6.2 yamt 11 1.1.1.1.6.2 yamt Redistribution and use in source and binary forms, with or without 12 1.1.1.1.6.2 yamt modification, are permitted provided that the following conditions 13 1.1.1.1.6.2 yamt are met: 14 1.1.1.1.6.2 yamt 15 1.1.1.1.6.2 yamt * Redistributions of source code must retain the above copyright 16 1.1.1.1.6.2 yamt notice, this list of conditions and the following disclaimer. 17 1.1.1.1.6.2 yamt * Redistributions in binary form must reproduce the above 18 1.1.1.1.6.2 yamt copyright notice, this list of conditions and the following 19 1.1.1.1.6.2 yamt disclaimer in the documentation and/or other materials 20 1.1.1.1.6.2 yamt provided with the distribution. 21 1.1.1.1.6.2 yamt * Neither the name of Hewlett-Packard Co. nor the names of its 22 1.1.1.1.6.2 yamt contributors may be used to endorse or promote products derived 23 1.1.1.1.6.2 yamt from this software without specific prior written permission. 24 1.1.1.1.6.2 yamt 25 1.1.1.1.6.2 yamt THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 26 1.1.1.1.6.2 yamt CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 27 1.1.1.1.6.2 yamt INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 28 1.1.1.1.6.2 yamt MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 29 1.1.1.1.6.2 yamt DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 30 1.1.1.1.6.2 yamt BE LIABLE FOR ANYDIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 31 1.1.1.1.6.2 yamt OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 32 1.1.1.1.6.2 yamt PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 33 1.1.1.1.6.2 yamt PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 34 1.1.1.1.6.2 yamt THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 35 1.1.1.1.6.2 yamt TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 36 1.1.1.1.6.2 yamt THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 1.1.1.1.6.2 yamt SUCH DAMAGE. 38 1.1.1.1.6.2 yamt */ 39 1.1.1.1.6.2 yamt .text 40 1.1.1.1.6.2 yamt .align 4 41 1.1.1.1.6.2 yamt 42 1.1.1.1.6.2 yamt .globl _start 43 1.1.1.1.6.2 yamt _start: 44 1.1.1.1.6.2 yamt subq $8, %rsp 45 1.1.1.1.6.2 yamt pushq %rcx 46 1.1.1.1.6.2 yamt pushq %rdx 47 1.1.1.1.6.2 yamt 48 1.1.1.1.6.2 yamt 0: 49 1.1.1.1.6.2 yamt lea ImageBase(%rip), %rdi 50 1.1.1.1.6.2 yamt lea _DYNAMIC(%rip), %rsi 51 1.1.1.1.6.2 yamt 52 1.1.1.1.6.2 yamt popq %rcx 53 1.1.1.1.6.2 yamt popq %rdx 54 1.1.1.1.6.2 yamt pushq %rcx 55 1.1.1.1.6.2 yamt pushq %rdx 56 1.1.1.1.6.2 yamt call _relocate 57 1.1.1.1.6.2 yamt 58 1.1.1.1.6.2 yamt popq %rdi 59 1.1.1.1.6.2 yamt popq %rsi 60 1.1.1.1.6.2 yamt 61 1.1.1.1.6.2 yamt call efi_main 62 1.1.1.1.6.2 yamt addq $8, %rsp 63 1.1.1.1.6.2 yamt 64 1.1.1.1.6.2 yamt .exit: 65 1.1.1.1.6.2 yamt ret 66 1.1.1.1.6.2 yamt 67 1.1.1.1.6.2 yamt // hand-craft a dummy .reloc section so EFI knows it's a relocatable executable: 68 1.1.1.1.6.2 yamt 69 1.1.1.1.6.2 yamt .data 70 1.1.1.1.6.2 yamt dummy: .long 0 71 1.1.1.1.6.2 yamt 72 1.1.1.1.6.2 yamt #define IMAGE_REL_ABSOLUTE 0 73 1.1.1.1.6.2 yamt .section .reloc, "a" 74 1.1.1.1.6.2 yamt label1: 75 1.1.1.1.6.2 yamt .long dummy-label1 // Page RVA 76 1.1.1.1.6.2 yamt .long 10 // Block Size (2*4+2) 77 1.1.1.1.6.2 yamt .word (IMAGE_REL_ABSOLUTE<<12) + 0 // reloc for dummy 78 1.1.1.1.6.2 yamt 79
Indexes created Sat Nov 01 19:09:55 GMT 2025