coregrind/pub_core_syscall.h

   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) 2000-2017 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, see <http://www.gnu.org/licenses/>.
  25
  26    The GNU General Public License is contained in the file COPYING.
  27 */
  28
  29 #ifndef __PUB_CORE_SYSCALL_H
  30 #define __PUB_CORE_SYSCALL_H
  31
  32 #include "pub_core_basics.h"   // VG_ macro
  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
  47 extern SysRes VG_(do_syscall) ( UWord sysno,
  48                                 RegWord, RegWord, RegWord,
  49                                 RegWord, RegWord, RegWord,
  50                                 RegWord, RegWord );
  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
  72 extern SysRes VG_(mk_SysRes_x86_linux)   ( Int  val );
  73 extern SysRes VG_(mk_SysRes_amd64_linux) ( Long val );
  74 extern SysRes VG_(mk_SysRes_ppc32_linux) ( UInt  val, UInt  cr0so );
  75 extern SysRes VG_(mk_SysRes_ppc64_linux) ( ULong val, ULong cr0so );
  76 extern SysRes VG_(mk_SysRes_arm_linux)   ( Int val );
  77 extern SysRes VG_(mk_SysRes_arm64_linux) ( Long val );
  78 extern SysRes VG_(mk_SysRes_x86_darwin)  ( UChar scclass, Bool isErr,
  79                                            UInt wHI, UInt wLO );
  80 extern SysRes VG_(mk_SysRes_amd64_darwin)( UChar scclass, Bool isErr,
  81                                            ULong wHI, ULong wLO );
  82 extern SysRes VG_(mk_SysRes_s390x_linux) ( Long val );
  83 extern SysRes VG_(mk_SysRes_mips32_linux)( UWord v0, UWord v1,
  84                                            UWord a3 );
  85 extern SysRes VG_(mk_SysRes_mips64_linux)( ULong v0, ULong v1,
  86                                            ULong a3 );
  87 extern SysRes VG_(mk_SysRes_nanomips_linux)( UWord a0);
  88 extern SysRes VG_(mk_SysRes_x86_solaris) ( Bool isErr, UInt val, UInt val2 );
  89 extern SysRes VG_(mk_SysRes_amd64_solaris) ( Bool isErr, ULong val, ULong val2 );
  90 extern SysRes VG_(mk_SysRes_Error)       ( UWord val );
  91 extern SysRes VG_(mk_SysRes_Success)     ( UWord val );
  92
  93 #if defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \
  94     || defined(VGP_nanomips_linux)
  95 /* On Linux/MIPS, VG_(mk_SysRes_Success) sets the second result word
  96    to zero.  Here is a version that allows setting both values. */
  97 extern SysRes VG_(mk_SysRes_SuccessEx)   ( UWord val, UWord valEx );
  98 #endif
  99
 100
 101 /* Return a string which gives the name of an error value.  Note,
 102    unlike the standard C syserror fn, the returned string is not
 103    malloc-allocated or writable -- treat it as a constant. */
 104
 105 extern const HChar* VG_(strerror) ( UWord errnum );
 106
 107
 108 #endif   // __PUB_CORE_SYSCALL_H
 109
 110 /*--------------------------------------------------------------------*/
 111 /*--- end                                                          ---*/
 112 /*--------------------------------------------------------------------*/