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      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 # MMO is not a relocateable format, and we don't want to require an
      8 # explicit (e.g.) "-m elf64mmix" when -r is used.
      9 
     10 test -z $RELOCATEABLE_OUTPUT_FORMAT && RELOCATEABLE_OUTPUT_FORMAT=$OUTPUT_FORMAT
     11 test -z ${RELOCATING+0} && OUTPUT_FORMAT=$RELOCATEABLE_OUTPUT_FORMAT
     12 
     13 cat <<EOF
     14 /* Copyright (C) 2014 Free Software Foundation, Inc.
     15 
     16    Copying and distribution of this script, with or without modification,
     17    are permitted in any medium without royalty provided the copyright
     18    notice and this notice are preserved.  */
     19 
     20 OUTPUT_FORMAT("$OUTPUT_FORMAT")
     21 OUTPUT_ARCH(mmix)
     22 ${RELOCATING+ENTRY(Main)}
     23 SECTIONS
     24 {
     25   .text ${RELOCATING+ ${TEXT_START_ADDR}}:
     26   {
     27     *(.text)
     28     ${RELOCATING+*(.text.*)}
     29     ${RELOCATING+*(.gnu.linkonce.t*)}
     30     ${RELOCATING+*(.rodata)}
     31     ${RELOCATING+*(.rodata.*)}
     32     ${RELOCATING+*(.gnu.linkonce.r*)}
     33 
     34     /* FIXME: Move .init, .fini, .ctors and .dtors to their own sections.  */
     35     ${RELOCATING+ PROVIDE (_init_start = .);}
     36     ${RELOCATING+ PROVIDE (_init = .);}
     37     ${RELOCATING+ KEEP (*(SORT_NONE(.init)))}
     38     ${RELOCATING+ PROVIDE (_init_end = .);}
     39 
     40     ${RELOCATING+ PROVIDE (_fini_start = .);}
     41     ${RELOCATING+ PROVIDE (_fini = .);}
     42     ${RELOCATING+ KEEP (*(SORT_NONE(.fini)))}
     43     ${RELOCATING+ PROVIDE (_fini_end = .);}
     44 
     45     /* FIXME: Align ctors, dtors, ehframe.  */
     46     ${RELOCATING+ PROVIDE (_ctors_start = .);}
     47     ${RELOCATING+ PROVIDE (__ctors_start = .);}
     48     ${RELOCATING+ PROVIDE (_ctors = .);}
     49     ${RELOCATING+ PROVIDE (__ctors = .);}
     50     ${RELOCATING+ KEEP (*crtbegin.o(.ctors))}
     51     ${RELOCATING+ KEEP (*crtbegin?.o(.ctors))}
     52     ${RELOCATING+ KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o) .ctors))}
     53     ${RELOCATING+ KEEP (*(SORT(.ctors.*)))}
     54     ${RELOCATING+ KEEP (*(.ctors))}
     55     ${RELOCATING+ PROVIDE (_ctors_end = .);}
     56     ${RELOCATING+ PROVIDE (__ctors_end = .);}
     57 
     58     ${RELOCATING+ PROVIDE (_dtors_start = .);}
     59     ${RELOCATING+ PROVIDE (__dtors_start = .);}
     60     ${RELOCATING+ PROVIDE (_dtors = .);}
     61     ${RELOCATING+ PROVIDE (__dtors = .);}
     62     ${RELOCATING+ KEEP (*crtbegin.o(.dtors))}
     63     ${RELOCATING+ KEEP (*crtbegin?.o(.dtors))}
     64     ${RELOCATING+ KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o) .dtors))}
     65     ${RELOCATING+ KEEP (*(SORT(.dtors.*)))}
     66     ${RELOCATING+ KEEP (*(.dtors))}
     67     ${RELOCATING+ PROVIDE (_dtors_end = .);}
     68     ${RELOCATING+ PROVIDE (__dtors_end = .);}
     69 
     70     ${RELOCATING+KEEP (*(.jcr))}
     71     ${RELOCATING+KEEP (*(.eh_frame))}
     72     ${RELOCATING+*(.gcc_except_table)}
     73 
     74     ${RELOCATING+Main = DEFINED (Main) ? Main : (DEFINED (_start) ? _start : ADDR (.text));}
     75   }
     76 
     77   /* The following NOP assignment and those after .data and .bss, are
     78      necessary to get orphan sections adopted by the .text inserted before
     79      the following end-section symbols.  An output section would also serve
     80      this purpose, but we can't do that.  */
     81   . = .;
     82   ${RELOCATING+ PROVIDE(etext = .);}
     83   ${RELOCATING+ PROVIDE(_etext = .);}
     84   ${RELOCATING+ PROVIDE(__etext = .);}
     85 
     86   .data ${RELOCATING+ ${DATA_ADDR}}:
     87   {
     88     ${RELOCATING+ PROVIDE(__Sdata = .);}
     89 
     90     *(.data);
     91     ${RELOCATING+*(.data.*)}
     92     ${RELOCATING+*(.gnu.linkonce.d*)}
     93   }
     94   . = .;
     95   ${RELOCATING+ PROVIDE(__Edata = .);}
     96   /* Deprecated, use __Edata.  */
     97   ${RELOCATING+ PROVIDE(edata = .);}
     98   ${RELOCATING+ PROVIDE(_edata = .);}
     99   ${RELOCATING+ PROVIDE(__edata = .);}
    100 
    101   /* At the moment, although perhaps we should, we can't map sections
    102      without contents to sections *with* contents due to FIXME: a BFD bug.
    103      Anyway, the mmo back-end ignores sections without contents when
    104      writing out sections, so this works fine.   */
    105   .bss :
    106   {
    107     ${RELOCATING+ PROVIDE(__Sbss = .);}
    108     ${RELOCATING+ PROVIDE(__bss_start = .);}
    109     ${RELOCATING+ *(.sbss);}
    110     ${RELOCATING+ *(.bss);}
    111     ${RELOCATING+*(.bss.*)}
    112     ${RELOCATING+ *(COMMON);}
    113   }
    114   . = .;
    115   ${RELOCATING+ PROVIDE(__Ebss = .);}
    116 
    117   /* Deprecated, use __Ebss or __Eall as appropriate.  */
    118   ${RELOCATING+ PROVIDE(end = .);}
    119   ${RELOCATING+ PROVIDE(_end = .);}
    120   ${RELOCATING+ PROVIDE(__end = .);}
    121   ${RELOCATING+ PROVIDE(__Eall = .);}
    122 
    123   .stab 0 : { *(.stab) }
    124   .stabstr 0 : { *(.stabstr) }
    125   .stab.excl 0 : { *(.stab.excl) }
    126   .stab.exclstr 0 : { *(.stab.exclstr) }
    127   .stab.index 0 : { *(.stab.index) }
    128   .stab.indexstr 0 : { *(.stab.indexstr) }
    129 EOF
    130 
    131 . $srcdir/scripttempl/DWARF.sc
    132 
    133 cat <<EOF
    134   .MMIX.reg_contents :
    135   {
    136     /* Note that this section always has a fixed VMA - that of its
    137        first register * 8.  */
    138     *(.MMIX.reg_contents.linker_allocated);
    139     *(.MMIX.reg_contents);
    140   }
    141 
    142   /* By default, put the high end of the stack where the register stack
    143      begins.  They grow in opposite directions.  */
    144   PROVIDE (__Stack_start = 0x6000000000000000);
    145 
    146   /* Unfortunately, stabs are not mappable from ELF to MMO.
    147      It can probably be fixed with some amount of work.  */
    148   /DISCARD/ :
    149   { ${RELOCATING+ *(.gnu.warning.*);} }
    150 
    151   .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
    152 }
    153 EOF
    154