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      1 # Adapted from mips.sc
      2 #
      3 # Copyright (C) 2014 Free Software Foundation, Inc.
      4 # 
      5 # Copying and distribution of this file, with or without modification,
      6 # are permitted in any medium without royalty provided the copyright
      7 # notice and this notice are preserved.
      8 #
      9 # These variables may be overridden by the emulation file.  The
     10 # defaults are appropriate for a DECstation running Ultrix.
     11 
     12 test -z "$ENTRY" && ENTRY=_start
     13 
     14 #test -z "$TEXT_START_ADDR" && TEXT_START_ADDR="0x0"
     15 
     16 CTOR=".ctors ${CONSTRUCTING-0} : 
     17   {
     18     ${CONSTRUCTING+${CTOR_START}}
     19     /* gcc uses crtbegin.o to find the start of
     20        the constructors, so we make sure it is
     21        first.  Because this is a wildcard, it
     22        doesn't matter if the user does not
     23        actually link against crtbegin.o; the
     24        linker won't look for a file to match a
     25        wildcard.  The wildcard also means that it
     26        doesn't matter which directory crtbegin.o
     27        is in.  */
     28 
     29     KEEP (*crtbegin.o(.ctors))
     30 
     31     /* We don't want to include the .ctor section from
     32        from the crtend.o file until after the sorted ctors.
     33        The .ctor section from the crtend file contains the
     34        end of ctors marker and it must be last */
     35 
     36     KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
     37     KEEP (*(SORT(.ctors.*)))
     38     KEEP (*(.ctors))
     39     ${CONSTRUCTING+${CTOR_END}}
     40   }"
     41 
     42 DTOR=" .dtors       ${CONSTRUCTING-0} :
     43   {
     44     ${CONSTRUCTING+${DTOR_START}}
     45     KEEP (*crtbegin.o(.dtors))
     46     KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
     47     KEEP (*(SORT(.dtors.*)))
     48     KEEP (*(.dtors))
     49     ${CONSTRUCTING+${DTOR_END}}
     50   }"
     51 
     52 cat <<EOF
     53 /* Copyright (C) 2014 Free Software Foundation, Inc.
     54 
     55    Copying and distribution of this script, with or without modification,
     56    are permitted in any medium without royalty provided the copyright
     57    notice and this notice are preserved.  */
     58 
     59 OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
     60 	      "${LITTLE_OUTPUT_FORMAT}")
     61 /*${LIB_SEARCH_DIRS}*/
     62 ${RELOCATING+${LIB_SEARCH_DIRS}}
     63 
     64 ${RELOCATING+ENTRY (${ENTRY})}
     65 
     66 _TEXT_START_ADDR = DEFINED(_TEXT_START_ADDR) ? _TEXT_START_ADDR : 0x50;		
     67 _HEAP_SIZE = DEFINED(_HEAP_SIZE) ? _HEAP_SIZE : 0x0;
     68 _STACK_SIZE = DEFINED(_STACK_SIZE) ? _STACK_SIZE : 0x400;
     69 
     70 SECTIONS
     71 {
     72   .vectors.reset 0x0 : { KEEP (*(.vectors.reset)) } = 0
     73   .vectors.sw_exception 0x8 : { KEEP (*(.vectors.sw_exception)) } = 0
     74   .vectors.interrupt 0x10 : { KEEP (*(.vectors.interrupt)) } = 0
     75   .vectors.debug_sw_break 0x18 : { KEEP (*(.vectors.debug_sw_break)) } = 0
     76   .vectors.hw_exception 0x20 : { KEEP (*(.vectors.hw_exception)) } = 0
     77 
     78   ${RELOCATING+. = _TEXT_START_ADDR;}
     79 
     80   ${RELOCATING+ _ftext  =  .;}
     81   .text : {
     82     ${RELOCATING+*(.text)}
     83     ${RELOCATING+*(.text.*)}
     84     ${RELOCATING+*(.gnu.linkonce.t.*)}
     85   }
     86   ${RELOCATING+ _etext  =  .;}
     87 
     88   .init : { KEEP (*(.init))	} =0
     89   .fini : { KEEP (*(.fini))	} =0
     90 
     91   ${RELOCATING+PROVIDE (__CTOR_LIST__ = .);}
     92   ${RELOCATING+PROVIDE (___CTOR_LIST__ = .);}
     93   ${RELOCATING+${CTOR}}
     94   ${RELOCATING+PROVIDE (__CTOR_END__ = .);}
     95   ${RELOCATING+PROVIDE (___CTOR_END__ = .);}
     96 
     97   ${RELOCATING+PROVIDE (__DTOR_LIST__ = .);}
     98   ${RELOCATING+PROVIDE (___DTOR_LIST__ = .);}
     99   ${RELOCATING+${DTOR}}
    100   ${RELOCATING+PROVIDE (__DTOR_END__ = .);}
    101   ${RELOCATING+PROVIDE (___DTOR_END__ = .);}
    102 
    103   ${RELOCATING+ . = ALIGN(4);}
    104    ${RELOCATING+ _frodata = . ;}
    105   .rodata : {
    106     ${RELOCATING+*(.rodata)}
    107     ${RELOCATING+*(.rodata.*)}
    108     ${RELOCATING+*(.gnu.linkonce.r.*)}
    109     ${CONSTRUCTING+CONSTRUCTORS}; /* Is this needed? */
    110   }
    111   ${RELOCATING+ _erodata = .;}
    112 
    113   /* Alignments by 8 to ensure that _SDA2_BASE_ on a word boundary */
    114   /* Note that .sdata2 and .sbss2 must be contiguous */
    115   ${RELOCATING+. = ALIGN(8);}
    116   ${RELOCATING+ _ssrw = .;}
    117   .sdata2 : {
    118     ${RELOCATING+*(.sdata2)}
    119     ${RELOCATING+*(.sdata2.*)}
    120     ${RELOCATING+*(.gnu.linkonce.s2.*)}
    121   }
    122   ${RELOCATING+. = ALIGN(4);}
    123   .sbss2 : {
    124     ${RELOCATING+PROVIDE (__sbss2_start = .);}	
    125     ${RELOCATING+*(.sbss2)}
    126     ${RELOCATING+*(.sbss2.*)}
    127     ${RELOCATING+*(.gnu.linkonce.sb2.*)}
    128     ${RELOCATING+PROVIDE (__sbss2_end = .);}
    129   }
    130   ${RELOCATING+. = ALIGN(8);}
    131   ${RELOCATING+ _essrw = .;}
    132   ${RELOCATING+ _ssrw_size = _essrw - _ssrw;}
    133   ${RELOCATING+ PROVIDE (_SDA2_BASE_ = _ssrw + (_ssrw_size / 2 ));}
    134 
    135   ${RELOCATING+ . = ALIGN(4);}
    136   ${RELOCATING+ _fdata = .;}
    137   .data : {
    138     ${RELOCATING+*(.data)}
    139     ${RELOCATING+*(.gnu.linkonce.d.*)}
    140     ${CONSTRUCTING+CONSTRUCTORS}; /* Is this needed? */
    141   }
    142   ${RELOCATING+ _edata = . ;}
    143   
    144    /* Added to handle pic code */
    145   .got : {  
    146     ${RELOCATING+*(.got)}
    147   }
    148 
    149   .got1 : {  
    150     ${RELOCATING+*(.got1)}
    151   }
    152 
    153   .got2 : {  
    154     ${RELOCATING+*(.got2)}
    155   }
    156 
    157   /* Added by Sathya to handle C++ exceptions */
    158   .eh_frame : {  
    159     ${RELOCATING+*(.eh_frame)}
    160   }
    161   
    162   .jcr : {  
    163     ${RELOCATING+*(.jcr)}
    164   }
    165 
    166   .gcc_except_table : {  
    167     ${RELOCATING+*(.gcc_except_table)}
    168   }
    169 
    170   /* Alignments by 8 to ensure that _SDA_BASE_ on a word boundary */
    171   /* Note that .sdata and .sbss must be contiguous */
    172   ${RELOCATING+. = ALIGN(8);}
    173   ${RELOCATING+ _ssro = .;}
    174   .sdata : {
    175     ${RELOCATING+*(.sdata)}
    176     ${RELOCATING+*(.sdata.*)}
    177     ${RELOCATING+*(.gnu.linkonce.s.*)}
    178   }
    179   ${RELOCATING+. = ALIGN(4);}
    180   .sbss : {
    181     ${RELOCATING+PROVIDE (__sbss_start = .);}	
    182     ${RELOCATING+*(.sbss)}
    183     ${RELOCATING+*(.sbss.*)}
    184     ${RELOCATING+*(.gnu.linkonce.sb.*)}
    185     ${RELOCATING+PROVIDE (__sbss_end = .);}
    186   }
    187   ${RELOCATING+. = ALIGN(8);}
    188   ${RELOCATING+ _essro = .;}
    189   ${RELOCATING+ _ssro_size = _essro - _ssro;}
    190   ${RELOCATING+PROVIDE (_SDA_BASE_ = _ssro + (_ssro_size / 2 ));}
    191 
    192   ${RELOCATING+ . = ALIGN(4);}
    193   ${RELOCATING+ _fbss = .;}
    194   .bss : {
    195     ${RELOCATING+PROVIDE (__bss_start = .);}	
    196     ${RELOCATING+*(.bss)}
    197     ${RELOCATING+*(.bss.*)}
    198     ${RELOCATING+*(.gnu.linkonce.b.*)}
    199     ${RELOCATING+*(COMMON)}
    200     ${RELOCATING+. = ALIGN(. != 0 ? 4 : 1);}
    201     
    202     ${RELOCATING+PROVIDE (__bss_end = .);}
    203 
    204   }
    205 
    206   ${RELOCATING+ . = ALIGN(4);}
    207 
    208   .heap : {
    209     ${RELOCATING+ _heap = .;}
    210     ${RELOCATING+ _heap_start = .;}
    211     ${RELOCATING+ . += _HEAP_SIZE;}
    212     ${RELOCATING+ _heap_end = .;}
    213   } 
    214 
    215   ${RELOCATING+ . = ALIGN(4);}
    216 
    217   .stack : {
    218     ${RELOCATING+ _stack_end = .;}
    219     ${RELOCATING+ . += _STACK_SIZE;}
    220     ${RELOCATING+ . = ALIGN(. != 0 ? 8 : 1);}
    221     ${RELOCATING+ _stack = .;}
    222     ${RELOCATING+ _end = .;}
    223   }
    224 
    225   .tdata : {  
    226     ${RELOCATING+*(.tdata)}
    227     ${RELOCATING+*(.tdata.*)}
    228     ${RELOCATING+*(.gnu.linkonce.td.*)}
    229   }
    230   .tbss : {  
    231     ${RELOCATING+*(.tbss)}
    232     ${RELOCATING+*(.tbss.*)}
    233     ${RELOCATING+*(.gnu.linkonce.tb.*)}
    234   }
    235 }
    236 EOF
    237