diff options
Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/powerpc64/crti.S')
| -rw-r--r-- | REORG.TODO/sysdeps/powerpc/powerpc64/crti.S | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/crti.S b/REORG.TODO/sysdeps/powerpc/powerpc64/crti.S new file mode 100644 index 0000000000..fa4f5833ef --- /dev/null +++ b/REORG.TODO/sysdeps/powerpc/powerpc64/crti.S @@ -0,0 +1,88 @@ +/* Special .init and .fini section support for PowerPC64. + Copyright (C) 2012-2017 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> +#include <sysdep.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 + +#if PREINIT_FUNCTION_WEAK + .section ".toc", "aw" +.LC0: + .tc PREINIT_FUNCTION[TC], PREINIT_FUNCTION +#endif + .section ".init", "ax", @progbits + ENTRY_2(_init) + .align ALIGNARG (2) +BODY_LABEL (_init): + LOCALENTRY(_init) + mflr 0 + std 0, FRAME_LR_SAVE(r1) + stdu r1, -FRAME_MIN_SIZE_PARM(r1) +#if PREINIT_FUNCTION_WEAK + addis r9, r2, .LC0@toc@ha + ld r0, .LC0@toc@l(r9) + cmpdi cr7, r0, 0 + beq+ cr7, 1f +#endif + bl JUMPTARGET (PREINIT_FUNCTION) + nop +1: + + .section ".fini", "ax", @progbits + ENTRY_2(_fini) + .align ALIGNARG (2) +BODY_LABEL (_fini): + LOCALENTRY(_fini) + mflr 0 + std 0, FRAME_LR_SAVE(r1) + stdu r1, -FRAME_MIN_SIZE_PARM(r1) |