1 /* Script for -pie -z combreloc: position independent executable, combine & sort relocs */ 2 /* Copyright (C) 2014 Free Software Foundation, Inc. 3 Copying and distribution of this script, with or without modification, 4 are permitted in any medium without royalty provided the copyright 5 notice and this notice are preserved. */ 6 OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", 7 "elf32-littlearm") 8 OUTPUT_ARCH(arm) 9 ENTRY(_start) 10 SECTIONS 11 { 12 /* Read-only sections, merged into text segment: */ 13 PROVIDE (__executable_start = 0); . = 0 + SIZEOF_HEADERS; 14 .interp : { *(.interp) } 15 .note.gnu.build-id : { *(.note.gnu.build-id) } 16 .hash : { *(.hash) } 17 .gnu.hash : { *(.gnu.hash) } 18 .dynsym : { *(.dynsym) } 19 .dynstr : { *(.dynstr) } 20 .gnu.version : { *(.gnu.version) } 21 .gnu.version_d : { *(.gnu.version_d) } 22 .gnu.version_r : { *(.gnu.version_r) } 23 .rel.dyn : 24 { 25 *(.rel.init) 26 *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) 27 *(.rel.fini) 28 *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) 29 *(.rel.data.rel.ro .rel.data.rel.ro.* .rel.gnu.linkonce.d.rel.ro.*) 30 *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) 31 *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) 32 *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) 33 *(.rel.ctors) 34 *(.rel.dtors) 35 *(.rel.got) 36 *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) 37 PROVIDE_HIDDEN (__rel_iplt_start = .); 38 *(.rel.iplt) 39 PROVIDE_HIDDEN (__rel_iplt_end = .); 40 } 41 .rela.dyn : 42 { 43 *(.rela.init) 44 *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) 45 *(.rela.fini) 46 *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) 47 *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) 48 *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) 49 *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) 50 *(.rela.ctors) 51 *(.rela.dtors) 52 *(.rela.got) 53 *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) 54 PROVIDE_HIDDEN (__rela_iplt_start = .); 55 *(.rela.iplt) 56 PROVIDE_HIDDEN (__rela_iplt_end = .); 57 } 58 .rel.plt : 59 { 60 *(.rel.plt) 61 } 62 .rela.plt : 63 { 64 *(.rela.plt) 65 } 66 .init : 67 { 68 KEEP (*(SORT_NONE(.init))) 69 } 70 .plt : { *(.plt) } 71 .iplt : { *(.iplt) } 72 .text : 73 { 74 *(.text.unlikely .text.*_unlikely .text.unlikely.*) 75 *(.text.exit .text.exit.*) 76 *(.text.startup .text.startup.*) 77 *(.text.hot .text.hot.*) 78 *(.text .stub .text.* .gnu.linkonce.t.*) 79 /* .gnu.warning sections are handled specially by elf32.em. */ 80 *(.gnu.warning) 81 *(.glue_7t) *(.glue_7) *(.vfp11_veneer) *(.v4_bx) 82 } 83 .fini : 84 { 85 KEEP (*(SORT_NONE(.fini))) 86 } 87 PROVIDE (__etext = .); 88 PROVIDE (_etext = .); 89 PROVIDE (etext = .); 90 .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } 91 .rodata1 : { *(.rodata1) } 92 .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } 93 PROVIDE_HIDDEN (__exidx_start = .); 94 .ARM.exidx : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) } 95 PROVIDE_HIDDEN (__exidx_end = .); 96 .eh_frame_hdr : { *(.eh_frame_hdr) } 97 .eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) } 98 .gcc_except_table : ONLY_IF_RO { *(.gcc_except_table 99 .gcc_except_table.*) } 100 /* These sections are generated by the Sun/Oracle C++ compiler. */ 101 .exception_ranges : ONLY_IF_RO { *(.exception_ranges 102 .exception_ranges*) } 103 /* Adjust the address for the data segment. For 32 bits we want to align 104 at exactly a page boundary to make life easier for apriori. */ 105 . = ALIGN (CONSTANT (MAXPAGESIZE)); . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE)); 106 /* Exception handling */ 107 .eh_frame : ONLY_IF_RW { KEEP (*(.eh_frame)) } 108 .gcc_except_table : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) } 109 .exception_ranges : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) } 110 /* Thread Local Storage sections */ 111 .tdata : { *(.tdata .tdata.* .gnu.linkonce.td.*) } 112 .tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) } 113 /* Ensure the __preinit_array_start label is properly aligned. We 114 could instead move the label definition inside the section, but 115 the linker would then create the section even if it turns out to 116 be empty, which isn't pretty. */ 117 . = ALIGN(32 / 8); 118 PROVIDE_HIDDEN (__preinit_array_start = .); 119 .preinit_array : 120 { 121 KEEP (*(.preinit_array)) 122 } 123 PROVIDE_HIDDEN (__preinit_array_end = .); 124 PROVIDE_HIDDEN (__init_array_start = .); 125 .init_array : 126 { 127 KEEP (*crtbegin*.o(.init_array)) 128 KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*))) 129 KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin*.o *crtend.o *crtend*.o ) .ctors)) 130 } 131 PROVIDE_HIDDEN (__init_array_end = .); 132 PROVIDE_HIDDEN (__fini_array_start = .); 133 .fini_array : 134 { 135 KEEP (*crtbegin*.o(.fini_array)) 136 KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*))) 137 KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin*.o *crtend.o *crtend*.o ) .dtors)) 138 } 139 PROVIDE_HIDDEN (__fini_array_end = .); 140 .ctors : 141 { 142 /* gcc uses crtbegin.o to find the start of 143 the constructors, so we make sure it is 144 first. Because this is a wildcard, it 145 doesn't matter if the user does not 146 actually link against crtbegin.o; the 147 linker won't look for a file to match a 148 wildcard. The wildcard also means that it 149 doesn't matter which directory crtbegin.o 150 is in. */ 151 KEEP (*crtbegin.o(.ctors)) 152 KEEP (*crtbegin*.o(.ctors)) 153 /* We don't want to include the .ctor section from 154 the crtend.o file until after the sorted ctors. 155 The .ctor section from the crtend file contains the 156 end of ctors marker and it must be last */ 157 KEEP (*(EXCLUDE_FILE (*crtend.o *crtend*.o ) .ctors)) 158 KEEP (*(SORT(.ctors.*))) 159 KEEP (*(.ctors)) 160 } 161 .dtors : 162 { 163 KEEP (*crtbegin.o(.dtors)) 164 KEEP (*crtbegin*.o(.dtors)) 165 KEEP (*(EXCLUDE_FILE (*crtend.o *crtend*.o ) .dtors)) 166 KEEP (*(SORT(.dtors.*))) 167 KEEP (*(.dtors)) 168 } 169 .jcr : { KEEP (*(.jcr)) } 170 .data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro .data.rel.ro.* .gnu.linkonce.d.rel.ro.*) } 171 .dynamic : { *(.dynamic) } 172 . = DATA_SEGMENT_RELRO_END (0, .); 173 .got : { *(.got.plt) *(.igot.plt) *(.got) *(.igot) } 174 .data : 175 { 176 PROVIDE (__data_start = .); 177 *(.data .data.* .gnu.linkonce.d.*) 178 SORT(CONSTRUCTORS) 179 } 180 .data1 : { *(.data1) } 181 _edata = .; PROVIDE (edata = .); 182 __bss_start = .; 183 __bss_start__ = .; 184 .bss : 185 { 186 *(.dynbss) 187 *(.bss .bss.* .gnu.linkonce.b.*) 188 *(COMMON) 189 /* Align here to ensure that the .bss section occupies space up to 190 _end. Align after .bss to ensure correct alignment even if the 191 .bss section disappears because there are no input sections. */ 192 . = ALIGN(32 / 8); 193 } 194 _bss_end__ = . ; __bss_end__ = . ; 195 . = ALIGN(32 / 8); 196 . = SEGMENT_START("ldata-segment", .); 197 . = ALIGN(32 / 8); 198 __end__ = . ; 199 _end = .; 200 _bss_end__ = . ; __bss_end__ = . ; __end__ = . ; 201 PROVIDE (end = .); 202 . = DATA_SEGMENT_END (.); 203 /* Stabs debugging sections. */ 204 .stab 0 : { *(.stab) } 205 .stabstr 0 : { *(.stabstr) } 206 .stab.excl 0 : { *(.stab.excl) } 207 .stab.exclstr 0 : { *(.stab.exclstr) } 208 .stab.index 0 : { *(.stab.index) } 209 .stab.indexstr 0 : { *(.stab.indexstr) } 210 .comment 0 : { *(.comment) } 211 /* DWARF debug sections. 212 Symbols in the DWARF debugging sections are relative to the beginning 213 of the section so we begin them at 0. */ 214 /* DWARF 1 */ 215 .debug 0 : { *(.debug) } 216 .line 0 : { *(.line) } 217 /* GNU DWARF 1 extensions */ 218 .debug_srcinfo 0 : { *(.debug_srcinfo) } 219 .debug_sfnames 0 : { *(.debug_sfnames) } 220 /* DWARF 1.1 and DWARF 2 */ 221 .debug_aranges 0 : { *(.debug_aranges) } 222 .debug_pubnames 0 : { *(.debug_pubnames) } 223 /* DWARF 2 */ 224 .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) } 225 .debug_abbrev 0 : { *(.debug_abbrev) } 226 .debug_line 0 : { *(.debug_line .debug_line.* .debug_line_end ) } 227 .debug_frame 0 : { *(.debug_frame) } 228 .debug_str 0 : { *(.debug_str) } 229 .debug_loc 0 : { *(.debug_loc) } 230 .debug_macinfo 0 : { *(.debug_macinfo) } 231 /* SGI/MIPS DWARF 2 extensions */ 232 .debug_weaknames 0 : { *(.debug_weaknames) } 233 .debug_funcnames 0 : { *(.debug_funcnames) } 234 .debug_typenames 0 : { *(.debug_typenames) } 235 .debug_varnames 0 : { *(.debug_varnames) } 236 /* DWARF 3 */ 237 .debug_pubtypes 0 : { *(.debug_pubtypes) } 238 .debug_ranges 0 : { *(.debug_ranges) } 239 /* DWARF Extension. */ 240 .debug_macro 0 : { *(.debug_macro) } 241 .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) } 242 .note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) } 243 /DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) *(.mdebug.*) } 244 } 245
