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author | Roland McGrath <roland@hack.frob.com> | 2014-07-03 22:19:41 -0700 |
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committer | Mike Frysinger <vapier@gentoo.org> | 2014-08-04 10:00:52 -0400 |
commit | 43a94c647d037b62b55a67f53304a2d3f9d7f66c (patch) | |
tree | 35e5a15704c7cb84091ff1ba99c5f1e6644e1c31 /sysdeps/unix/sysv/linux/ia64/dl-sysdep.h | |
parent | 8f3c1fa42da006fba38b8c485f6dd149b24d5e23 (diff) | |
download | glibc-43a94c647d037b62b55a67f53304a2d3f9d7f66c.tar.gz glibc-43a94c647d037b62b55a67f53304a2d3f9d7f66c.tar.xz glibc-43a94c647d037b62b55a67f53304a2d3f9d7f66c.zip |
IA64: Consolidate nptl/ subdirectories under linux/...
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64/dl-sysdep.h')
-rw-r--r-- | sysdeps/unix/sysv/linux/ia64/dl-sysdep.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/dl-sysdep.h b/sysdeps/unix/sysv/linux/ia64/dl-sysdep.h new file mode 100644 index 0000000000..64c6ecd4bc --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/dl-sysdep.h @@ -0,0 +1,55 @@ +/* System-specific settings for dynamic linker code. IA-64 version. + Copyright (C) 2003-2014 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. + + 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/>. */ + +#ifndef _LINUX_IA64_DL_SYSDEP_H +#define _LINUX_IA64_DL_SYSDEP_H 1 + +#include_next <dl-sysdep.h> + +/* Traditionally system calls have been made using break 0x100000. A + second method was introduced which, if possible, will use the EPC + instruction. To signal the presence and where to find the code the + kernel passes an AT_SYSINFO_EHDR pointer in the auxiliary vector to + the application. */ +#define NEED_DL_SYSINFO 1 +#define USE_DL_SYSINFO 1 + +#ifndef __ASSEMBLER__ +/* Don't declare this as a function---we want it's entry-point, not + it's function descriptor... */ +extern int _dl_sysinfo_break attribute_hidden; +# define DL_SYSINFO_DEFAULT ((uintptr_t) &_dl_sysinfo_break) +# define DL_SYSINFO_IMPLEMENTATION \ + asm (".text\n\t" \ + ".hidden _dl_sysinfo_break\n\t" \ + ".proc _dl_sysinfo_break\n\t" \ + "_dl_sysinfo_break:\n\t" \ + ".prologue\n\t" \ + ".altrp b6\n\t" \ + ".body\n\t" \ + "break 0x100000;\n\t" \ + "br.ret.sptk.many b6;\n\t" \ + ".endp _dl_sysinfo_break\n\t" \ + ".previous"); +#endif + +/* _dl_argv cannot be attribute_relro, because _dl_start_user + might write into it after _dl_start returns. */ +#define DL_ARGV_NOT_RELRO 1 + +#endif /* dl-sysdep.h */ |