pub_core_syscall.h revision b32f58018498ea2225959b0ba11c18f0c433deef 
1
2/*--------------------------------------------------------------------*/
3/*--- Doing system calls.                       pub_core_syscall.h ---*/
4/*--------------------------------------------------------------------*/
5
6/*
7   This file is part of Valgrind, a dynamic binary instrumentation
8   framework.
9
10   Copyright (C) 2000-2011 Julian Seward
11      jseward@acm.org
12
13   This program is free software; you can redistribute it and/or
14   modify it under the terms of the GNU General Public License as
15   published by the Free Software Foundation; either version 2 of the
16   License, or (at your option) any later version.
17
18   This program is distributed in the hope that it will be useful, but
19   WITHOUT ANY WARRANTY; without even the implied warranty of
20   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
21   General Public License for more details.
22
23   You should have received a copy of the GNU General Public License
24   along with this program; if not, write to the Free Software
25   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
26   02111-1307, USA.
27
28   The GNU General Public License is contained in the file COPYING.
29*/
30
31#ifndef __PUB_CORE_SYSCALL_H
32#define __PUB_CORE_SYSCALL_H
33
34//--------------------------------------------------------------------
35// PURPOSE: This module contains the code for actually executing syscalls.
36//--------------------------------------------------------------------
37
38/* Do a syscall on this platform, with 8 args, and return the result
39   in canonical format in a SysRes value. */
40
41// We use a full prototype for VG_(do_syscall) rather than "..." to ensure
42// that all arguments get converted to a UWord appropriately.  Not doing so
43// can cause problems when passing 32-bit integers on 64-bit platforms,
44// because the top 32-bits might not be zeroed appropriately, eg. as would
45// happen with the 6th arg on AMD64 which is passed on the stack.
46
47extern SysRes VG_(do_syscall) ( UWord sysno,
48                                UWord, UWord, UWord,
49                                UWord, UWord, UWord,
50                                UWord, UWord );
51
52/* Macros make life easier. */
53
54#define vgPlain_do_syscall0(s)             VG_(do_syscall)((s),0,0,0,0,0,0,0,0)
55#define vgPlain_do_syscall1(s,a)           VG_(do_syscall)((s),(a),\
56                                                           0,0,0,0,0,0,0)
57#define vgPlain_do_syscall2(s,a,b)         VG_(do_syscall)((s),(a),(b),\
58                                                           0,0,0,0,0,0)
59#define vgPlain_do_syscall3(s,a,b,c)       VG_(do_syscall)((s),(a),(b),(c),\
60                                                           0,0,0,0,0)
61#define vgPlain_do_syscall4(s,a,b,c,d)     VG_(do_syscall)((s),(a),(b),(c),\
62                                                           (d),0,0,0,0)
63#define vgPlain_do_syscall5(s,a,b,c,d,e)   VG_(do_syscall)((s),(a),(b),(c),\
64                                                           (d),(e),0,0,0)
65#define vgPlain_do_syscall6(s,a,b,c,d,e,f) VG_(do_syscall)((s),(a),(b),(c),\
66                                                           (d),(e),(f),0,0)
67#define vgPlain_do_syscall7(s,a,b,c,d,e,f,g) VG_(do_syscall)((s),(a),(b),(c),\
68                                                           (d),(e),(f),(g),0)
69#define vgPlain_do_syscall8(s,a,b,c,d,e,f,g,h) VG_(do_syscall)((s),(a),(b),(c),\
70                                                           (d),(e),(f),(g),(h))
71
72extern SysRes VG_(mk_SysRes_x86_linux)   ( Int  val );
73extern SysRes VG_(mk_SysRes_amd64_linux) ( Long val );
74extern SysRes VG_(mk_SysRes_ppc32_linux) ( UInt  val, UInt  cr0so );
75extern SysRes VG_(mk_SysRes_ppc64_linux) ( ULong val, ULong cr0so );
76extern SysRes VG_(mk_SysRes_arm_linux)   ( Int val );
77extern SysRes VG_(mk_SysRes_x86_darwin)  ( UChar scclass, Bool isErr,
78                                           UInt wHI, UInt wLO );
79extern SysRes VG_(mk_SysRes_amd64_darwin)( UChar scclass, Bool isErr,
80                                           ULong wHI, ULong wLO );
81extern SysRes VG_(mk_SysRes_s390x_linux) ( Long val );
82extern SysRes VG_(mk_SysRes_Error)       ( UWord val );
83extern SysRes VG_(mk_SysRes_Success)     ( UWord val );
84
85
86
87/* Return a string which gives the name of an error value.  Note,
88   unlike the standard C syserror fn, the returned string is not
89   malloc-allocated or writable -- treat it as a constant. */
90
91extern const HChar* VG_(strerror) ( UWord errnum );
92
93
94#endif   // __PUB_CORE_SYSCALL_H
95
96/*--------------------------------------------------------------------*/
97/*--- end                                                          ---*/
98/*--------------------------------------------------------------------*/
99