include/valgrind/pub_tool_basics_asm.h

0001
0002 /*--------------------------------------------------------------------*/
0003 /*--- Header imported directly by every tool asm file.             ---*/
0004 /*---                                        pub_tool_basics_asm.h ---*/
0005 /*--------------------------------------------------------------------*/
0006
0007 /*
0008    This file is part of Valgrind, a dynamic binary instrumentation
0009    framework.
0010
0011    Copyright (C) 2000-2017 Julian Seward
0012       jseward@acm.org
0013
0014    This program is free software; you can redistribute it and/or
0015    modify it under the terms of the GNU General Public License as
0016    published by the Free Software Foundation; either version 2 of the
0017    License, or (at your option) any later version.
0018
0019    This program is distributed in the hope that it will be useful, but
0020    WITHOUT ANY WARRANTY; without even the implied warranty of
0021    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0022    General Public License for more details.
0023
0024    You should have received a copy of the GNU General Public License
0025    along with this program; if not, see <http://www.gnu.org/licenses/>.
0026
0027    The GNU General Public License is contained in the file COPYING.
0028 */
0029
0030 #ifndef __PUB_TOOL_BASICS_ASM_H
0031 #define __PUB_TOOL_BASICS_ASM_H
0032
0033 // See pub_tool_basics.h for the purpose of these macros.
0034 //
0035 // Note that although the macros here (which are used in asm files) have the
0036 // same name as those in pub_tool_basics.h (which are used in C files), they
0037 // have different definitions.  Actually, on Linux the definitions are the
0038 // same, but on Darwin they are different.  The reason is that C names on
0039 // Darwin always get a '_' prepended to them by the compiler.  But in order to
0040 // refer to them from asm code, we have to add the '_' ourselves.  Having two
0041 // versions of these macros makes that difference transparent, so we can use
0042 // VG_/ML_ in both asm and C files.
0043 //
0044 // Note also that the exact prefixes used have to match those used in
0045 // pub_tool_basics.h.
0046
0047 #define VGAPPEND(str1,str2) str1##str2
0048
0049 #if defined(VGO_linux) || defined(VGO_solaris) || defined(VGO_freebsd)
0050 #  define VG_(str)    VGAPPEND( vgPlain_,          str)
0051 #  define ML_(str)    VGAPPEND( vgModuleLocal_,    str)
0052 #elif defined(VGO_darwin)
0053 #  define VG_(str)    VGAPPEND(_vgPlain_,          str)
0054 #  define ML_(str)    VGAPPEND(_vgModuleLocal_,    str)
0055 #else
0056 #  error Unknown OS
0057 #endif
0058
0059 /* Let the linker know we don't need an executable stack.
0060    The call to MARK_STACK_NO_EXEC should be put unconditionally
0061    at the end of all asm source files.
0062 */
0063 #if defined(VGO_linux)
0064 #  if defined(VGA_arm)
0065 #    define MARK_STACK_NO_EXEC .section .note.GNU-stack,"",%progbits
0066 #  else
0067 #    define MARK_STACK_NO_EXEC .section .note.GNU-stack,"",@progbits
0068 #  endif
0069 #else
0070 #  define MARK_STACK_NO_EXEC
0071 #endif
0072
0073 #endif /* __PUB_TOOL_BASICS_ASM_H */
0074
0075 /*--------------------------------------------------------------------*/
0076 /*--- end                                                          ---*/
0077 /*--------------------------------------------------------------------*/