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Diffstat (limited to 'gcc/config/mips/irix-crti.asm')
| -rw-r--r-- | gcc/config/mips/irix-crti.asm | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/gcc/config/mips/irix-crti.asm b/gcc/config/mips/irix-crti.asm new file mode 100644 index 000000000..0e52e6194 --- /dev/null +++ b/gcc/config/mips/irix-crti.asm @@ -0,0 +1,81 @@ +/* Copyright (C) 2004, 2008 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + + .abicalls + .set noreorder + .set nomacro + +/* The GNU and SGI linkers differ in their implementation of -init and -fini. + With the GNU linker, there can only be a single -init option, and the + linker simply sets DT_INIT to that value. gcc's initialization and + finalization code can go directly in .init, with the prologue and + epilogue of the main initialization routine being provided by external + object files (*crti.o and *crtn.o in this case). + + The SGI linker instead accepts several -init options. It will set DT_INIT + to a linker-created function (placed in .init) that calls each of the -init + functions in turn. If there is any user code in .init, this linker-created + function will be placed after it. Note that such user code is not treated + specially; it will only be called if the -init options arrange for it to + be called. + + In theory, the SGI model should allow the crti, crtn and intermediate code + to go in .init, just like it can with the GNU linker. However, doing this + seems to confuse the linker and triggers an internal error: + + ld32: FATAL 2 : Internal: at ../../ld/mips_code.c mips_code_fixup() + text section overflow! + + (seen with MIPSpro 7.30). We therefore put everything in a special + .gcc_init section instead. */ + + .section .gcc_init,"ax",@progbits + .globl __gcc_init +__gcc_init: +#if _MIPS_SIM == _ABIO32 + addiu $sp,$sp,-16 + sw $31,0($sp) +#else + daddiu $sp,$sp,-16 + sd $31,0($sp) + sd $28,8($sp) +#endif + + .section .gcc_fini,"ax",@progbits + .globl __gcc_fini +__gcc_fini: +#if _MIPS_SIM == _ABIO32 + addiu $sp,$sp,-16 + sw $31,0($sp) +#else + daddiu $sp,$sp,-16 + sd $31,0($sp) + sd $28,8($sp) +#endif + +/* This object will typically be included in the final link for both + shared libraries and executable, and we need to hide the symbols to + prevent possible symbol preemption warnings from the SGI linker. */ +.hidden __gcc_init +.hidden __gcc_fini + |