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author | joseph <joseph@7b3dc134-2b1b-0410-93df-9e9f96275f8d> | 2012-02-18 02:24:59 +0000 |
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committer | joseph <joseph@7b3dc134-2b1b-0410-93df-9e9f96275f8d> | 2012-02-18 02:24:59 +0000 |
commit | 33f3f8954d202664c7c7a224d13ba5a0c14a0e01 (patch) | |
tree | e0f840c6480989b155a172c09109241a7be183e7 /ports/sysdeps/mips/mips32/crti.S | |
parent | fa83b30737d538378a98cab7fbc982ae3f8ac442 (diff) |
Merge changes between r17050 and r17194 from /fsf/trunk.
git-svn-id: svn://svn.eglibc.org/trunk@17195 7b3dc134-2b1b-0410-93df-9e9f96275f8d
Diffstat (limited to 'ports/sysdeps/mips/mips32/crti.S')
-rw-r--r-- | ports/sysdeps/mips/mips32/crti.S | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/ports/sysdeps/mips/mips32/crti.S b/ports/sysdeps/mips/mips32/crti.S new file mode 100644 index 000000000..1c7e95d4d --- /dev/null +++ b/ports/sysdeps/mips/mips32/crti.S @@ -0,0 +1,92 @@ +/* Special .init and .fini section support for MIPS (o32). + Copyright (C) 1995-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file with other + programs, and to distribute those programs without any restriction + coming from the use of this file. (The GNU Lesser General Public + License restrictions do apply in other respects; for example, they + cover modification of the file, and distribution when not linked + into another program.) + + Note that people who make modified versions of this file are not + obligated to grant this special exception for their modified + versions; it is their choice whether to do so. The GNU Lesser + General Public License gives permission to release a modified + version without this exception; this exception also makes it + possible to release a modified version which carries forward this + exception. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* crti.S puts a function prologue at the beginning of the .init and + .fini sections and defines global symbols for those addresses, so + they can be called as functions. The symbols _init and _fini are + magic and cause the linker to emit DT_INIT and DT_FINI. */ + +#include <libc-symbols.h> + +#ifndef PREINIT_FUNCTION +# define PREINIT_FUNCTION __gmon_start__ +#endif + +#ifndef PREINIT_FUNCTION_WEAK +# define PREINIT_FUNCTION_WEAK 1 +#endif + +#if PREINIT_FUNCTION_WEAK + weak_extern (PREINIT_FUNCTION) +#else + .hidden PREINIT_FUNCTION +#endif + + .section .init,"ax",@progbits + .p2align 2 + .globl _init + .type _init, @function +_init: + .set noreorder + .cpload $25 + .set reorder + addiu $sp,$sp,-32 + .cprestore 16 + sw $31,28($sp) +#if PREINIT_FUNCTION_WEAK + lw $2,%got(PREINIT_FUNCTION)($28) + beq $2,$0,.Lno_weak_fn + lw $25,%call16(PREINIT_FUNCTION)($28) + .reloc 1f,R_MIPS_JALR,PREINIT_FUNCTION +1: jalr $25 +.Lno_weak_fn: +#else + lw $25,%got(PREINIT_FUNCTION)($28) + .reloc 1f,R_MIPS_JALR,PREINIT_FUNCTION +1: jalr $25 +#endif + + .section .fini,"ax",@progbits + .p2align 2 + .globl _fini + .type _fini, @function +_fini: + .set noreorder + .cpload $25 + .set reorder + addiu $sp,$sp,-32 + .cprestore 16 + sw $31,28($sp) |