ld/scripttempl/elfi370.sc

   1 # Copyright (C) 2014-2017 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 # This is just a raw copy of elfppc.sc and has not been otherwise modified
   8 #
   9 # Unusual variables checked by this code:
  10 #       NOP - four byte opcode for no-op (defaults to 0)
  11 #       DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
  12 #       OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
  13 #               (e.g., .PARISC.milli)
  14 #       OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ...
  15 #               (e.g., .PARISC.global)
  16 #       ATTRS_SECTIONS - at the end
  17 #       OTHER_SECTIONS - at the end
  18 #       EXECUTABLE_SYMBOLS - symbols that must be defined for an
  19 #               executable (e.g., _DYNAMIC_LINK)
  20 #       TEXT_START_SYMBOLS - symbols that appear at the start of the
  21 #               .text section.
  22 #       DATA_START_SYMBOLS - symbols that appear at the start of the
  23 #               .data section.
  24 #       OTHER_BSS_SYMBOLS - symbols that appear at the start of the
  25 #               .bss section besides __bss_start.
  26 #
  27 # When adding sections, do note that the names of some sections are used
  28 # when specifying the start address of the next.
  29
  30 test -z "$ENTRY" && ENTRY=_start
  31 test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
  32 test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
  33 test -z "$ATTRS_SECTIONS" && ATTRS_SECTIONS=".gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }"
  34 test "$LD_FLAG" = "N" && DATA_ADDR=.
  35 SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2) }"
  36 SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2) }"
  37 INTERP=".interp ${RELOCATING-0} : { *(.interp) }"
  38 PLT=".plt ${RELOCATING-0} : { *(.plt) }"
  39
  40 cat <<EOF
  41 /* Copyright (C) 2014-2017 Free Software Foundation, Inc.
  42
  43    Copying and distribution of this script, with or without modification,
  44    are permitted in any medium without royalty provided the copyright
  45    notice and this notice are preserved.  */
  46
  47 OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
  48               "${LITTLE_OUTPUT_FORMAT}")
  49 OUTPUT_ARCH(${ARCH})
  50 ${RELOCATING+ENTRY(${ENTRY})}
  51
  52 ${RELOCATING+${LIB_SEARCH_DIRS}}
  53 ${RELOCATING+/* Do we need any of these for elf?
  54    __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}}  */}
  55 ${RELOCATING+${EXECUTABLE_SYMBOLS}}
  56 ${RELOCATING- /* For some reason, the Solaris linker makes bad executables
  57   if gld -r is used and the intermediate file has sections starting
  58   at non-zero addresses.  Could be a Solaris ld bug, could be a GNU ld
  59   bug.  But for now assigning the zero vmas works.  */}
  60
  61 ${RELOCATING+PROVIDE (__stack = 0);}
  62 SECTIONS
  63 {
  64   /* Read-only sections, merged into text segment: */
  65   ${CREATE_SHLIB-${RELOCATING+. = ${TEXT_START_ADDR} + SIZEOF_HEADERS;}}
  66   ${CREATE_SHLIB+${RELOCATING+. = SIZEOF_HEADERS;}}
  67   ${CREATE_SHLIB-${INTERP}}
  68   .hash         ${RELOCATING-0} : { *(.hash)            }
  69   .dynsym       ${RELOCATING-0} : { *(.dynsym)          }
  70   .dynstr       ${RELOCATING-0} : { *(.dynstr)          }
  71   .gnu.version ${RELOCATING-0} : { *(.gnu.version)      }
  72   .gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d)  }
  73   .gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r)  }
  74   .rela.text   ${RELOCATING-0} :
  75     { *(.rela.text) *(.rela.gnu.linkonce.t*) }
  76   .rela.data   ${RELOCATING-0} :
  77     { *(.rela.data) *(.rela.gnu.linkonce.d*) }
  78   .rela.rodata ${RELOCATING-0} :
  79     { *(.rela.rodata) *(.rela.gnu.linkonce.r*) }
  80   .rela.got     ${RELOCATING-0} : { *(.rela.got)        }
  81   .rela.got1    ${RELOCATING-0} : { *(.rela.got1)       }
  82   .rela.got2    ${RELOCATING-0} : { *(.rela.got2)       }
  83   .rela.ctors   ${RELOCATING-0} : { *(.rela.ctors)      }
  84   .rela.dtors   ${RELOCATING-0} : { *(.rela.dtors)      }
  85   .rela.init    ${RELOCATING-0} : { *(.rela.init)       }
  86   .rela.fini    ${RELOCATING-0} : { *(.rela.fini)       }
  87   .rela.bss     ${RELOCATING-0} : { *(.rela.bss)        }
  88   .rela.plt     ${RELOCATING-0} : { *(.rela.plt)        }
  89   .rela.sdata   ${RELOCATING-0} : { *(.rela.sdata)      }
  90   .rela.sbss    ${RELOCATING-0} : { *(.rela.sbss)       }
  91   .rela.sdata2  ${RELOCATING-0} : { *(.rela.sdata2)     }
  92   .rela.sbss2   ${RELOCATING-0} : { *(.rela.sbss2)      }
  93   .text    ${RELOCATING-0} :
  94   {
  95     ${RELOCATING+${TEXT_START_SYMBOLS}}
  96     *(.text)
  97     /* .gnu.warning sections are handled specially by elf32.em.  */
  98     *(.gnu.warning)
  99     *(.gnu.linkonce.t*)
 100   } =${NOP-0}
 101   .init         ${RELOCATING-0} : { *(.init)            } =${NOP-0}
 102   .fini         ${RELOCATING-0} : { *(.fini)            } =${NOP-0}
 103   .rodata       ${RELOCATING-0} : { *(.rodata) *(.gnu.linkonce.r*) }
 104   .rodata1      ${RELOCATING-0} : { *(.rodata1) }
 105   ${RELOCATING+_etext = .;}
 106   ${RELOCATING+PROVIDE (etext = .);}
 107   ${CREATE_SHLIB-${SDATA2}}
 108   ${CREATE_SHLIB-${SBSS2}}
 109   ${OTHER_READONLY_SECTIONS}
 110
 111   /* Adjust the address for the data segment.  We want to adjust up to
 112      the same address within the page on the next page up.  It would
 113      be more correct to do this:
 114        ${RELOCATING+. = ${DATA_ADDR-ALIGN(${MAXPAGESIZE}) + (ALIGN(8) & (${MAXPAGESIZE} - 1))};}
 115      The current expression does not correctly handle the case of a
 116      text segment ending precisely at the end of a page; it causes the
 117      data segment to skip a page.  The above expression does not have
 118      this problem, but it will currently (2/95) cause BFD to allocate
 119      a single segment, combining both text and data, for this case.
 120      This will prevent the text segment from being shared among
 121      multiple executions of the program; I think that is more
 122      important than losing a page of the virtual address space (note
 123      that no actual memory is lost; the page which is skipped can not
 124      be referenced).  */
 125   ${RELOCATING+. = ${DATA_ADDR- ALIGN(8) + ${MAXPAGESIZE}};}
 126
 127   .data  ${RELOCATING-0} :
 128   {
 129     ${RELOCATING+${DATA_START_SYMBOLS}}
 130     *(.data)
 131     *(.gnu.linkonce.d*)
 132     ${CONSTRUCTING+CONSTRUCTORS}
 133   }
 134   .data1 ${RELOCATING-0} : { *(.data1) }
 135   ${OTHER_READWRITE_SECTIONS}
 136
 137   .got1         ${RELOCATING-0} : { *(.got1) }
 138   .dynamic      ${RELOCATING-0} : { *(.dynamic) }
 139
 140   /* Put .ctors and .dtors next to the .got2 section, so that the pointers
 141      get relocated with -mrelocatable. Also put in the .fixup pointers.
 142      The current compiler no longer needs this, but keep it around for 2.7.2  */
 143
 144                 ${RELOCATING+PROVIDE (_GOT2_START_ = .);}
 145   .got2         ${RELOCATING-0} :  { *(.got2) }
 146
 147                 ${RELOCATING+PROVIDE (__CTOR_LIST__ = .);}
 148   .ctors        ${RELOCATING-0} : { *(.ctors) }
 149                 ${RELOCATING+PROVIDE (__CTOR_END__ = .);}
 150
 151                 ${RELOCATING+PROVIDE (__DTOR_LIST__ = .);}
 152   .dtors        ${RELOCATING-0} : { *(.dtors) }
 153                 ${RELOCATING+PROVIDE (__DTOR_END__ = .);}
 154
 155                 ${RELOCATING+PROVIDE (_FIXUP_START_ = .);}
 156   .fixup        ${RELOCATING-0} : { *(.fixup) }
 157                 ${RELOCATING+PROVIDE (_FIXUP_END_ = .);}
 158                 ${RELOCATING+PROVIDE (_GOT2_END_ = .);}
 159
 160                 ${RELOCATING+PROVIDE (_GOT_START_ = .);}
 161   .got          ${RELOCATING-0} : { *(.got) }
 162   .got.plt      ${RELOCATING-0} : { *(.got.plt) }
 163   ${CREATE_SHLIB+${SDATA2}}
 164   ${CREATE_SHLIB+${SBSS2}}
 165                 ${RELOCATING+PROVIDE (_GOT_END_ = .);}
 166
 167   /* We want the small data sections together, so single-instruction offsets
 168      can access them all, and initialized data all before uninitialized, so
 169      we can shorten the on-disk segment size.  */
 170   .sdata        ${RELOCATING-0} : { *(.sdata) }
 171   ${RELOCATING+_edata  =  .;}
 172   ${RELOCATING+PROVIDE (edata = .);}
 173   .sbss    ${RELOCATING-0} :
 174   {
 175     ${RELOCATING+PROVIDE (__sbss_start = .);}
 176     *(.sbss)
 177     *(.scommon)
 178     *(.dynsbss)
 179     ${RELOCATING+PROVIDE (__sbss_end = .);}
 180   }
 181   ${PLT}
 182   .bss     ${RELOCATING-0} :
 183   {
 184    ${RELOCATING+${OTHER_BSS_SYMBOLS}}
 185    ${RELOCATING+PROVIDE (__bss_start = .);}
 186    *(.dynbss)
 187    *(.bss)
 188    *(COMMON)
 189   }
 190   ${RELOCATING+_end = . ;}
 191   ${RELOCATING+PROVIDE (end = .);}
 192
 193   /* These are needed for ELF backends which have not yet been
 194      converted to the new style linker.  */
 195   .stab 0 : { *(.stab) }
 196   .stabstr 0 : { *(.stabstr) }
 197
 198 EOF
 199
 200 . $srcdir/scripttempl/DWARF.sc
 201
 202 cat <<EOF
 203   ${ATTRS_SECTIONS}
 204   ${OTHER_SECTIONS}
 205 }
 206 EOF