1 /* ----------------------------------------------------------------------- 2 * 3 * Copyright 2008-2009 H. Peter Anvin - All Rights Reserved 4 * Copyright 2009 Intel Corporation; author: H. Peter Anvin 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 9 * Boston MA 02110-1301, USA; either version 2 of the License, or 10 * (at your option) any later version; incorporated herein by reference. 11 * 12 * ----------------------------------------------------------------------- */ 13 14 /* 15 * Linker script for the SYSLINUX core 16 */ 17 18 OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64") 19 OUTPUT_ARCH(i386:x86-64) 20 ENTRY(_start) 21 22 SECTIONS 23 { 24 . = 0; 25 ImageBase = .; /* For gnu-efi's crt0 */ 26 __module_start = .; 27 . = SEGMENT_START("text-segment", 0) + SIZEOF_HEADERS; 28 .text : { 29 FILL(0x90909090) 30 __text_start = .; 31 *(.text) 32 *(.text.*) 33 __text_end = .; 34 } 35 36 . = ALIGN(16); 37 38 .rodata : { 39 __rodata_start = .; 40 *(.rodata) 41 *(.rodata.*) 42 __rodata_end = .; 43 } 44 45 . = ALIGN(4); 46 47 .ctors : { 48 __ctors_start = .; 49 KEEP (*(SORT(.ctors.*))) 50 KEEP (*(.ctors)) 51 __ctors_end = .; 52 } 53 54 .dtors : { 55 __dtors_start = .; 56 KEEP (*(SORT(.dtors.*))) 57 KEEP (*(.dtors)) 58 __dtors_end = .; 59 } 60 61 . = ALIGN(4096); 62 .rel : { 63 *(.rel.got) 64 *(.rel.data) 65 *(.rel.data.*) 66 *(.rel.ctors) 67 } 68 69 . = ALIGN(4); 70 71 .gnu.hash : { 72 __gnu_hash_start = .; 73 *(.gnu.hash) 74 __gnu_hash_end = .; 75 } 76 77 78 .dynsym : { 79 __dynsym_start = .; 80 *(.dynsym) 81 __dynsym_end = .; 82 } 83 84 . = ALIGN(4); 85 86 .dynstr : { 87 __dynstr_start = .; 88 *(.dynstr) 89 __dynstr_end = .; 90 } 91 92 . = ALIGN(4); 93 94 .dynlink : { 95 __dynlink_start = .; 96 *(.dynlink) 97 __dynlink_end = .; 98 } 99 100 . = ALIGN(4); 101 102 .got : { 103 __got_start = .; 104 KEEP (*(.got.plt)) 105 KEEP (*(.got)) 106 __got_end = .; 107 } 108 109 . = ALIGN(4); 110 111 .dynamic : { 112 __dynamic_start = .; 113 *(.dynamic) 114 __dynamic_end = .; 115 } 116 117 . = ALIGN(16); 118 119 .data : { 120 __data_start = .; 121 *(.data) 122 *(.data.*) 123 *(.lowmem) 124 __data_end = .; 125 } 126 127 .reloc : { 128 *(.reloc) 129 } 130 131 .symtab : { 132 *(.symtab) 133 } 134 135 .strtab : { 136 *(.strtab) 137 } 138 139 .bss (NOLOAD) : { 140 /* the EFI loader doesn't seem to like a .bss section, 141 so we stick it all into .data: */ 142 __bss_start = .; 143 *(.bss) 144 *(.bss.*) 145 *(.bss16) 146 *(.hugebss) 147 *(COMMON) 148 __bss_end = .; 149 *(.sbss) 150 *(.scommon) 151 } 152 __bss_len = ABSOLUTE(__bss_end) - ABSOLUTE(__bss_start); 153 __bss_dwords = (__bss_len + 3) >> 2; 154 155 . = ALIGN(128); 156 157 /* Very large objects which don't need to be zeroed */ 158 159 .hugebss : { 160 __hugebss_start = .; 161 *(.hugebss) 162 *(.hugebss.*) 163 __hugebss_end = .; 164 } 165 166 _end = .; 167 168 /* Stuff we don't need... */ 169 /DISCARD/ : { 170 *(.eh_frame) 171 *(.comment) 172 } 173 } 174
