1 # Copyright (C) 2014 Free Software Foundation, Inc. 2 # 3 # Copying and distribution of this file, with or without modification, 4 # are permitted in any medium without royalty provided the copyright 5 # notice and this notice are preserved. 6 # 7 # Unusual variables checked by this code: 8 # NOP - four byte opcode for no-op (defaults to 0) 9 # DATA_ADDR - if end-of-text-plus-one-page isn't right for data start 10 # OTHER_READONLY_SECTIONS - other than .text .init .ctors .rodata ... 11 # (e.g., .PARISC.milli) 12 # OTHER_READWRITE_SECTIONS - other than .data .bss .sdata ... 13 # (e.g., .PARISC.global) 14 # OTHER_SECTIONS - at the end 15 # EXECUTABLE_SYMBOLS - symbols that must be defined for an 16 # executable (e.g., _DYNAMIC_LINK) 17 # TEXT_START_SYMBOLS - symbols that appear at the start of the 18 # .text section. 19 # DATA_START_SYMBOLS - symbols that appear at the start of the 20 # .data section. 21 # OTHER_BSS_SYMBOLS - symbols that appear at the start of the 22 # .bss section besides __bss_start. 23 # DATA_PLT - .plt should be in data segment, not text segment. 24 # 25 # When adding sections, do note that the names of some sections are used 26 # when specifying the start address of the next. 27 # 28 29 test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT} 30 test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT} 31 test "$LD_FLAG" = "N" && DATA_ADDR=. 32 INTERP=".interp ${RELOCATING-0} : { *(.interp) }" 33 PLT=".plt ${RELOCATING-0} : { *(.plt) }" 34 35 cat <<EOF 36 /* Copyright (C) 2014 Free Software Foundation, Inc. 37 38 Copying and distribution of this script, with or without modification, 39 are permitted in any medium without royalty provided the copyright 40 notice and this notice are preserved. */ 41 42 OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", 43 "${LITTLE_OUTPUT_FORMAT}") 44 OUTPUT_ARCH(${ARCH}) 45 46 ${RELOCATING+${LIB_SEARCH_DIRS}} 47 ${RELOCATING+/* Do we need any of these for elf? 48 __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}} */} 49 ${RELOCATING+${EXECUTABLE_SYMBOLS}} 50 ${RELOCATING- /* For some reason, the Solaris linker makes bad executables 51 if gld -r is used and the intermediate file has sections starting 52 at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld 53 bug. But for now assigning the zero vmas works. */} 54 SECTIONS 55 { 56 /* Read-only sections, merged into text segment: */ 57 ${CREATE_SHLIB-${RELOCATING+. = ${TEXT_START_ADDR} + SIZEOF_HEADERS;}} 58 ${CREATE_SHLIB+${RELOCATING+. = SIZEOF_HEADERS;}} 59 ${CREATE_SHLIB-${INTERP}} 60 .hash ${RELOCATING-0} : { *(.hash) } 61 .dynsym ${RELOCATING-0} : { *(.dynsym) } 62 .dynstr ${RELOCATING-0} : { *(.dynstr) } 63 .rel.text ${RELOCATING-0} : { *(.rel.text) } 64 .rela.text ${RELOCATING-0} : { *(.rela.text) } 65 .rel.data ${RELOCATING-0} : { *(.rel.data) } 66 .rela.data ${RELOCATING-0} : { *(.rela.data) } 67 .rel.rodata ${RELOCATING-0} : { *(.rel.rodata) } 68 .rela.rodata ${RELOCATING-0} : { *(.rela.rodata) } 69 .rel.got ${RELOCATING-0} : { *(.rel.got) } 70 .rela.got ${RELOCATING-0} : { *(.rela.got) } 71 .rel.ctors ${RELOCATING-0} : { *(.rel.ctors) } 72 .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) } 73 .rel.dtors ${RELOCATING-0} : { *(.rel.dtors) } 74 .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) } 75 .rel.bss ${RELOCATING-0} : { *(.rel.bss) } 76 .rela.bss ${RELOCATING-0} : { *(.rela.bss) } 77 .rel.plt ${RELOCATING-0} : { *(.rel.plt) } 78 .rela.plt ${RELOCATING-0} : { *(.rela.plt) } 79 .init ${RELOCATING-0} : { *(.init) } =${NOP-0} 80 ${DATA_PLT-${PLT}} 81 .text ${RELOCATING-0} : 82 { 83 ${RELOCATING+${TEXT_START_SYMBOLS}} 84 *(.text) 85 ${CONSTRUCTING+ __CTOR_LIST__ = .;} 86 ${CONSTRUCTING+ LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)} 87 ${CONSTRUCTING+ *(.ctors)} 88 ${CONSTRUCTING+ LONG(0)} 89 ${CONSTRUCTING+ __CTOR_END__ = .;} 90 ${CONSTRUCTING+ __DTOR_LIST__ = .;} 91 ${CONSTRUCTING+ LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)} 92 ${CONSTRUCTING+ *(.dtors)} 93 ${CONSTRUCTING+ LONG(0)} 94 ${CONSTRUCTING+ __DTOR_END__ = .;} 95 } 96 ${RELOCATING+_etext = .;} 97 ${RELOCATING+PROVIDE (etext = .);} 98 .fini ${RELOCATING-0} : { *(.fini) } =${NOP-0} 99 .ctors ${RELOCATING-0} : { *(.ctors) } 100 .dtors ${RELOCATING-0} : { *(.dtors) } 101 .rodata ${RELOCATING-0} : { *(.rodata) } 102 .rodata1 ${RELOCATING-0} : { *(.rodata1) } 103 ${OTHER_READONLY_SECTIONS} 104 105 /* Read-write section, merged into data segment: */ 106 ${RELOCATING+. = ${DATA_ADDR- ALIGN(8) + ${MAXPAGESIZE}};} 107 .data ${RELOCATING-0} : 108 { 109 ${RELOCATING+${DATA_START_SYMBOLS}} 110 *(.data) 111 ${CONSTRUCTING+CONSTRUCTORS} 112 } 113 .data1 ${RELOCATING-0} : { *(.data1) } 114 ${OTHER_READWRITE_SECTIONS} 115 .got ${RELOCATING-0} : { *(.got.plt) *(.got) } 116 .dynamic ${RELOCATING-0} : { *(.dynamic) } 117 ${DATA_PLT+${PLT}} 118 /* We want the small data sections together, so single-instruction offsets 119 can access them all, and initialized data all before uninitialized, so 120 we can shorten the on-disk segment size. */ 121 .sdata ${RELOCATING-0} : { *(.sdata) } 122 ${RELOCATING+_edata = .;} 123 ${RELOCATING+PROVIDE (edata = .);} 124 ${RELOCATING+__bss_start = .;} 125 ${RELOCATING+${OTHER_BSS_SYMBOLS}} 126 .sbss ${RELOCATING-0} : { *(.sbss) *(.scommon) } 127 .bss ${RELOCATING-0} : 128 { 129 *(.dynbss) 130 *(.bss) 131 *(COMMON) 132 } 133 ${RELOCATING+_end = . ;} 134 ${RELOCATING+PROVIDE (end = .);} 135 136 /* These are needed for ELF backends which have not yet been 137 converted to the new style linker. */ 138 .stab 0 : { *(.stab) } 139 .stabstr 0 : { *(.stabstr) } 140 141 ${OTHER_SECTIONS} 142 } 143 EOF 144
