gcc/config/mips/irix-crti.asm

   1         .abicalls
   2         .set    noreorder
   3         .set    nomacro
   4
   5 /* The GNU and SGI linkers differ in their implementation of -init and -fini.
   6    With the GNU linker, there can only be a single -init option, and the
   7    linker simply sets DT_INIT to that value.  gcc's initialization and
   8    finalization code can go directly in .init, with the prologue and
   9    epilogue of the main initialization routine being provided by external
  10    object files (*crti.o and *crtn.o in this case).
  11
  12    The SGI linker instead accepts several -init options.  It will set DT_INIT
  13    to a linker-created function (placed in .init) that calls each of the -init
  14    functions in turn.  If there is any user code in .init, this linker-created
  15    function will be placed after it.  Note that such user code is not treated
  16    specially; it will only be called if the -init options arrange for it to
  17    be called.
  18
  19    In theory, the SGI model should allow the crti, crtn and intermediate code
  20    to go in .init, just like it can with the GNU linker.  However, doing this
  21    seems to confuse the linker and triggers an internal error:
  22
  23       ld32: FATAL   2  : Internal: at ../../ld/mips_code.c mips_code_fixup()
  24          text section overflow!
  25
  26    (seen with MIPSpro 7.30).  We therefore put everything in a special
  27    .gcc_init section instead.  */
  28
  29         .section .gcc_init,"ax",@progbits
  30         .globl  __gcc_init
  31 __gcc_init:
  32 #if _MIPS_SIM == _ABIO32
  33         addiu   $sp,$sp,-16
  34         sw      $31,0($sp)
  35 #else
  36         daddiu  $sp,$sp,-16
  37         sd      $31,0($sp)
  38         sd      $28,8($sp)
  39 #endif
  40
  41         .section .gcc_fini,"ax",@progbits
  42         .globl  __gcc_fini
  43 __gcc_fini:
  44 #if _MIPS_SIM == _ABIO32
  45         addiu   $sp,$sp,-16
  46         sw      $31,0($sp)
  47 #else
  48         daddiu  $sp,$sp,-16
  49         sd      $31,0($sp)
  50         sd      $28,8($sp)
  51 #endif