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authorJoseph Myers <joseph@codesourcery.com>2012-07-01 13:08:59 +0000
committerJoseph Myers <joseph@codesourcery.com>2012-07-01 13:08:59 +0000
commite84eabb3871c9b39e59323bf3f6b98c2ca9d1cd0 (patch)
treedff3f1b79454b518d15a7b9bbedeb57ff156bbe8 /ports/sysdeps/mips/mips64/n32/crti.S
parent75f0d3040a2c2de8842bfa7a09e11da1a73e17d0 (diff)
parente64ac02c24b43659048622714afdc92fedf561fa (diff)
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Merge glibc-ports into ports/ directory. glibc-2.16.90 glibc-2.16-ports-merge
Diffstat (limited to 'ports/sysdeps/mips/mips64/n32/crti.S')
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1 files changed, 91 insertions, 0 deletions
diff --git a/ports/sysdeps/mips/mips64/n32/crti.S b/ports/sysdeps/mips/mips64/n32/crti.S
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+/* Special .init and .fini section support for MIPS (n32).
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* 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:
+	addiu $sp,$sp,-16
+	sd $28,0($sp)
+	lui $28,%hi(%neg(%gp_rel(_init)))
+	addu $28,$28,$25
+	sd $31,8($sp)
+	addiu $28,$28,%lo(%neg(%gp_rel(_init)))
+#if PREINIT_FUNCTION_WEAK
+	lw $2,%got_disp(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_disp(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:
+	addiu $sp,$sp,-16
+	sd $28,0($sp)
+	lui $28,%hi(%neg(%gp_rel(_fini)))
+	addu $28,$28,$25
+	sd $31,8($sp)
+	addiu $28,$28,%lo(%neg(%gp_rel(_fini)))