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/*--------------------------------------------------------------------*/
/*--- Management of memory error messages. ---*/
/*--- mc_errcontext.c ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of MemCheck, a heavyweight Valgrind tool for
detecting memory errors.
Copyright (C) 2000-2004 Julian Seward
jseward@acm.org
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307, USA.
The GNU General Public License is contained in the file COPYING.
*/
#include "mc_include.h"
/*------------------------------------------------------------*/
/*--- Printing errors ---*/
/*------------------------------------------------------------*/
void SK_(pp_SkinError) ( Error* err )
{
MAC_Error* err_extra = VG_(get_error_extra)(err);
switch (VG_(get_error_kind)(err)) {
case CoreMemErr: {
Char* s = ( err_extra->isUnaddr ? "unaddressable" : "uninitialised" );
VG_(message)(Vg_UserMsg, "%s contains %s byte(s)",
VG_(get_error_string)(err), s);
VG_(pp_ExeContext)( VG_(get_error_where)(err) );
break;
}
case ValueErr:
if (err_extra->size == 0) {
VG_(message)(Vg_UserMsg,
"Conditional jump or move depends on uninitialised value(s)");
} else {
VG_(message)(Vg_UserMsg,
"Use of uninitialised value of size %d",
err_extra->size);
}
VG_(pp_ExeContext)( VG_(get_error_where)(err) );
break;
case ParamErr: {
Bool isReg = ( Register == err_extra->addrinfo.akind );
Char* s1 = ( isReg ? "contains" : "points to" );
Char* s2 = ( err_extra->isUnaddr ? "unaddressable" : "uninitialised" );
if (isReg) sk_assert(!err_extra->isUnaddr);
VG_(message)(Vg_UserMsg, "Syscall param %s %s %s byte(s)",
VG_(get_error_string)(err), s1, s2);
VG_(pp_ExeContext)( VG_(get_error_where)(err) );
MAC_(pp_AddrInfo)(VG_(get_error_address)(err), &err_extra->addrinfo);
break;
}
case UserErr: {
Char* s = ( err_extra->isUnaddr ? "Unaddressable" : "Uninitialised" );
VG_(message)(Vg_UserMsg,
"%s byte(s) found during client check request", s);
VG_(pp_ExeContext)( VG_(get_error_where)(err) );
MAC_(pp_AddrInfo)(VG_(get_error_address)(err), &err_extra->addrinfo);
break;
}
default:
MAC_(pp_shared_SkinError)(err);
break;
}
}
/*------------------------------------------------------------*/
/*--- Recording errors ---*/
/*------------------------------------------------------------*/
/* Creates a copy of the `extra' part, updates the copy with address info if
necessary, and returns the copy. */
/* This one called from generated code and non-generated code. */
void MC_(record_value_error) ( ThreadId tid, Int size )
{
MAC_Error err_extra;
MAC_(clear_MAC_Error)( &err_extra );
err_extra.size = size;
err_extra.isUnaddr = False;
VG_(maybe_record_error)( tid, ValueErr, /*addr*/0, /*s*/NULL, &err_extra );
}
/* This called from non-generated code */
void MC_(record_user_error) ( ThreadId tid, Addr a, Bool isWrite,
Bool isUnaddr )
{
MAC_Error err_extra;
sk_assert(VG_INVALID_THREADID != tid);
MAC_(clear_MAC_Error)( &err_extra );
err_extra.addrinfo.akind = Undescribed;
err_extra.isUnaddr = isUnaddr;
VG_(maybe_record_error)( tid, UserErr, a, /*s*/NULL, &err_extra );
}
/*------------------------------------------------------------*/
/*--- Suppressions ---*/
/*------------------------------------------------------------*/
Bool SK_(recognised_suppression) ( Char* name, Supp* su )
{
SuppKind skind;
if (MAC_(shared_recognised_suppression)(name, su))
return True;
/* Extra suppressions not used by Addrcheck */
else if (VG_STREQ(name, "Cond")) skind = Value0Supp;
else if (VG_STREQ(name, "Value0")) skind = Value0Supp;/* backwards compat */
else if (VG_STREQ(name, "Value1")) skind = Value1Supp;
else if (VG_STREQ(name, "Value2")) skind = Value2Supp;
else if (VG_STREQ(name, "Value4")) skind = Value4Supp;
else if (VG_STREQ(name, "Value8")) skind = Value8Supp;
else if (VG_STREQ(name, "Value16")) skind = Value16Supp;
else
return False;
VG_(set_supp_kind)(su, skind);
return True;
}
/*--------------------------------------------------------------------*/
/*--- end mc_errcontext.c ---*/
/*--------------------------------------------------------------------*/
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