Andrew Hsieh | 665c16a | 2013-09-22 14:03:39 +0800 | [diff] [blame] | 1 | /* Script for -pie -z combreloc -z now -z relro: position independent executable, combine & sort relocs */ |
| 2 | OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", |
| 3 | "elf64-x86-64") |
| 4 | OUTPUT_ARCH(i386:x86-64) |
| 5 | ENTRY(_start) |
| 6 | SECTIONS |
| 7 | { |
| 8 | /* Read-only sections, merged into text segment: */ |
| 9 | PROVIDE (__executable_start = 0); . = 0 + SIZEOF_HEADERS; |
| 10 | .interp : { *(.interp) } |
| 11 | .note.gnu.build-id : { *(.note.gnu.build-id) } |
| 12 | .hash : { *(.hash) } |
| 13 | .gnu.hash : { *(.gnu.hash) } |
| 14 | .dynsym : { *(.dynsym) } |
| 15 | .dynstr : { *(.dynstr) } |
| 16 | .gnu.version : { *(.gnu.version) } |
| 17 | .gnu.version_d : { *(.gnu.version_d) } |
| 18 | .gnu.version_r : { *(.gnu.version_r) } |
| 19 | .rela.dyn : |
| 20 | { |
| 21 | *(.rela.init) |
| 22 | *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) |
| 23 | *(.rela.fini) |
| 24 | *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) |
| 25 | *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) |
| 26 | *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) |
| 27 | *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) |
| 28 | *(.rela.ctors) |
| 29 | *(.rela.dtors) |
| 30 | *(.rela.got) |
| 31 | *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) |
| 32 | *(.rela.ldata .rela.ldata.* .rela.gnu.linkonce.l.*) |
| 33 | *(.rela.lbss .rela.lbss.* .rela.gnu.linkonce.lb.*) |
| 34 | *(.rela.lrodata .rela.lrodata.* .rela.gnu.linkonce.lr.*) |
| 35 | *(.rela.ifunc) |
| 36 | } |
| 37 | .rela.plt : |
| 38 | { |
| 39 | *(.rela.plt) |
| 40 | PROVIDE_HIDDEN (__rela_iplt_start = .); |
| 41 | *(.rela.iplt) |
| 42 | PROVIDE_HIDDEN (__rela_iplt_end = .); |
| 43 | } |
| 44 | .init : |
| 45 | { |
| 46 | KEEP (*(SORT_NONE(.init))) |
| 47 | } |
| 48 | .plt : { *(.plt) *(.iplt) } |
| 49 | .text : |
| 50 | { |
Andrew Hsieh | e08fa7e | 2014-04-26 19:46:31 -0700 | [diff] [blame] | 51 | *(.text.unlikely .text.*_unlikely .text.unlikely.*) |
Andrew Hsieh | 665c16a | 2013-09-22 14:03:39 +0800 | [diff] [blame] | 52 | *(.text.exit .text.exit.*) |
| 53 | *(.text.startup .text.startup.*) |
| 54 | *(.text.hot .text.hot.*) |
| 55 | *(.text .stub .text.* .gnu.linkonce.t.*) |
| 56 | /* .gnu.warning sections are handled specially by elf32.em. */ |
| 57 | *(.gnu.warning) |
| 58 | } |
| 59 | .fini : |
| 60 | { |
| 61 | KEEP (*(SORT_NONE(.fini))) |
| 62 | } |
| 63 | PROVIDE (__etext = .); |
| 64 | PROVIDE (_etext = .); |
| 65 | PROVIDE (etext = .); |
| 66 | .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } |
| 67 | .rodata1 : { *(.rodata1) } |
| 68 | .eh_frame_hdr : { *(.eh_frame_hdr) } |
| 69 | .eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) } |
| 70 | .gcc_except_table : ONLY_IF_RO { *(.gcc_except_table |
| 71 | .gcc_except_table.*) } |
| 72 | /* These sections are generated by the Sun/Oracle C++ compiler. */ |
| 73 | .exception_ranges : ONLY_IF_RO { *(.exception_ranges |
| 74 | .exception_ranges*) } |
Andrew Hsieh | 515a379 | 2014-02-06 16:01:03 +0800 | [diff] [blame] | 75 | /* Adjust the address for the data segment. For 32 bits we want to align |
| 76 | at exactly a page boundary to make life easier for apriori. */ |
| 77 | . = ALIGN (CONSTANT (MAXPAGESIZE)) - ((CONSTANT (MAXPAGESIZE) - .) & (CONSTANT (MAXPAGESIZE) - 1)); . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE)); |
Andrew Hsieh | 665c16a | 2013-09-22 14:03:39 +0800 | [diff] [blame] | 78 | /* Exception handling */ |
| 79 | .eh_frame : ONLY_IF_RW { KEEP (*(.eh_frame)) } |
| 80 | .gcc_except_table : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) } |
| 81 | .exception_ranges : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) } |
| 82 | /* Thread Local Storage sections */ |
| 83 | .tdata : { *(.tdata .tdata.* .gnu.linkonce.td.*) } |
| 84 | .tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) } |
| 85 | /* Ensure the __preinit_array_start label is properly aligned. We |
| 86 | could instead move the label definition inside the section, but |
| 87 | the linker would then create the section even if it turns out to |
| 88 | be empty, which isn't pretty. */ |
| 89 | . = ALIGN(32 / 8); |
| 90 | PROVIDE_HIDDEN (__preinit_array_start = .); |
| 91 | .preinit_array : |
| 92 | { |
| 93 | KEEP (*(.preinit_array)) |
| 94 | } |
| 95 | PROVIDE_HIDDEN (__preinit_array_end = .); |
| 96 | PROVIDE_HIDDEN (__init_array_start = .); |
| 97 | .init_array : |
| 98 | { |
| 99 | KEEP (*crtbegin*.o(.init_array)) |
| 100 | KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*))) |
Andrew Hsieh | e08fa7e | 2014-04-26 19:46:31 -0700 | [diff] [blame] | 101 | KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin*.o *crtend.o *crtend*.o ) .ctors)) |
Andrew Hsieh | 665c16a | 2013-09-22 14:03:39 +0800 | [diff] [blame] | 102 | } |
| 103 | PROVIDE_HIDDEN (__init_array_end = .); |
| 104 | PROVIDE_HIDDEN (__fini_array_start = .); |
| 105 | .fini_array : |
| 106 | { |
| 107 | KEEP (*crtbegin*.o(.fini_array)) |
| 108 | KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*))) |
Andrew Hsieh | e08fa7e | 2014-04-26 19:46:31 -0700 | [diff] [blame] | 109 | KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin*.o *crtend.o *crtend*.o ) .dtors)) |
Andrew Hsieh | 665c16a | 2013-09-22 14:03:39 +0800 | [diff] [blame] | 110 | } |
| 111 | PROVIDE_HIDDEN (__fini_array_end = .); |
| 112 | .ctors : |
| 113 | { |
| 114 | /* gcc uses crtbegin.o to find the start of |
| 115 | the constructors, so we make sure it is |
| 116 | first. Because this is a wildcard, it |
| 117 | doesn't matter if the user does not |
| 118 | actually link against crtbegin.o; the |
| 119 | linker won't look for a file to match a |
| 120 | wildcard. The wildcard also means that it |
| 121 | doesn't matter which directory crtbegin.o |
| 122 | is in. */ |
| 123 | KEEP (*crtbegin.o(.ctors)) |
| 124 | KEEP (*crtbegin*.o(.ctors)) |
| 125 | /* We don't want to include the .ctor section from |
| 126 | the crtend.o file until after the sorted ctors. |
| 127 | The .ctor section from the crtend file contains the |
| 128 | end of ctors marker and it must be last */ |
| 129 | KEEP (*(EXCLUDE_FILE (*crtend.o *crtend*.o ) .ctors)) |
| 130 | KEEP (*(SORT(.ctors.*))) |
| 131 | KEEP (*(.ctors)) |
| 132 | } |
| 133 | .dtors : |
| 134 | { |
| 135 | KEEP (*crtbegin.o(.dtors)) |
| 136 | KEEP (*crtbegin*.o(.dtors)) |
| 137 | KEEP (*(EXCLUDE_FILE (*crtend.o *crtend*.o ) .dtors)) |
| 138 | KEEP (*(SORT(.dtors.*))) |
| 139 | KEEP (*(.dtors)) |
| 140 | } |
| 141 | .jcr : { KEEP (*(.jcr)) } |
| 142 | .data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro .data.rel.ro.* .gnu.linkonce.d.rel.ro.*) } |
| 143 | .dynamic : { *(.dynamic) } |
| 144 | .got : { *(.got.plt) *(.igot.plt) *(.got) *(.igot) } |
| 145 | . = DATA_SEGMENT_RELRO_END (0, .); |
| 146 | .data : |
| 147 | { |
| 148 | *(.data .data.* .gnu.linkonce.d.*) |
| 149 | SORT(CONSTRUCTORS) |
| 150 | } |
| 151 | .data1 : { *(.data1) } |
| 152 | _edata = .; PROVIDE (edata = .); |
| 153 | . = .; |
| 154 | __bss_start = .; |
| 155 | .bss : |
| 156 | { |
| 157 | *(.dynbss) |
| 158 | *(.bss .bss.* .gnu.linkonce.b.*) |
| 159 | *(COMMON) |
| 160 | /* Align here to ensure that the .bss section occupies space up to |
| 161 | _end. Align after .bss to ensure correct alignment even if the |
| 162 | .bss section disappears because there are no input sections. */ |
| 163 | . = ALIGN(64 / 8); |
| 164 | } |
| 165 | .lbss : |
| 166 | { |
| 167 | *(.dynlbss) |
| 168 | *(.lbss .lbss.* .gnu.linkonce.lb.*) |
| 169 | *(LARGE_COMMON) |
| 170 | } |
| 171 | . = ALIGN(64 / 8); |
Andrew Hsieh | e08fa7e | 2014-04-26 19:46:31 -0700 | [diff] [blame] | 172 | . = SEGMENT_START("ldata-segment", .); |
Andrew Hsieh | 665c16a | 2013-09-22 14:03:39 +0800 | [diff] [blame] | 173 | .lrodata ALIGN(CONSTANT (MAXPAGESIZE)) + (. & (CONSTANT (MAXPAGESIZE) - 1)) : |
| 174 | { |
| 175 | *(.lrodata .lrodata.* .gnu.linkonce.lr.*) |
| 176 | } |
| 177 | .ldata ALIGN(CONSTANT (MAXPAGESIZE)) + (. & (CONSTANT (MAXPAGESIZE) - 1)) : |
| 178 | { |
| 179 | *(.ldata .ldata.* .gnu.linkonce.l.*) |
| 180 | . = ALIGN(. != 0 ? 64 / 8 : 1); |
| 181 | } |
| 182 | . = ALIGN(64 / 8); |
| 183 | _end = .; |
| 184 | _bss_end__ = . ; __bss_end__ = . ; __end__ = . ; |
| 185 | PROVIDE (end = .); |
| 186 | . = DATA_SEGMENT_END (.); |
| 187 | /* Stabs debugging sections. */ |
| 188 | .stab 0 : { *(.stab) } |
| 189 | .stabstr 0 : { *(.stabstr) } |
| 190 | .stab.excl 0 : { *(.stab.excl) } |
| 191 | .stab.exclstr 0 : { *(.stab.exclstr) } |
| 192 | .stab.index 0 : { *(.stab.index) } |
| 193 | .stab.indexstr 0 : { *(.stab.indexstr) } |
| 194 | .comment 0 : { *(.comment) } |
| 195 | /* DWARF debug sections. |
| 196 | Symbols in the DWARF debugging sections are relative to the beginning |
| 197 | of the section so we begin them at 0. */ |
| 198 | /* DWARF 1 */ |
| 199 | .debug 0 : { *(.debug) } |
| 200 | .line 0 : { *(.line) } |
| 201 | /* GNU DWARF 1 extensions */ |
| 202 | .debug_srcinfo 0 : { *(.debug_srcinfo) } |
| 203 | .debug_sfnames 0 : { *(.debug_sfnames) } |
| 204 | /* DWARF 1.1 and DWARF 2 */ |
| 205 | .debug_aranges 0 : { *(.debug_aranges) } |
| 206 | .debug_pubnames 0 : { *(.debug_pubnames) } |
| 207 | /* DWARF 2 */ |
| 208 | .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) } |
| 209 | .debug_abbrev 0 : { *(.debug_abbrev) } |
Andrew Hsieh | e08fa7e | 2014-04-26 19:46:31 -0700 | [diff] [blame] | 210 | .debug_line 0 : { *(.debug_line .debug_line.* .debug_line_end ) } |
Andrew Hsieh | 665c16a | 2013-09-22 14:03:39 +0800 | [diff] [blame] | 211 | .debug_frame 0 : { *(.debug_frame) } |
| 212 | .debug_str 0 : { *(.debug_str) } |
| 213 | .debug_loc 0 : { *(.debug_loc) } |
| 214 | .debug_macinfo 0 : { *(.debug_macinfo) } |
| 215 | /* SGI/MIPS DWARF 2 extensions */ |
| 216 | .debug_weaknames 0 : { *(.debug_weaknames) } |
| 217 | .debug_funcnames 0 : { *(.debug_funcnames) } |
| 218 | .debug_typenames 0 : { *(.debug_typenames) } |
| 219 | .debug_varnames 0 : { *(.debug_varnames) } |
| 220 | /* DWARF 3 */ |
| 221 | .debug_pubtypes 0 : { *(.debug_pubtypes) } |
| 222 | .debug_ranges 0 : { *(.debug_ranges) } |
| 223 | /* DWARF Extension. */ |
| 224 | .debug_macro 0 : { *(.debug_macro) } |
| 225 | .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) } |
| 226 | /DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) *(.mdebug.*) } |
| 227 | } |