1ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 2ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*--------------------------------------------------------------------*/ 3ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*--- Malloc replacement. replacemalloc_core.c ---*/ 4ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*--------------------------------------------------------------------*/ 5ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 6ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/* 7ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown This file is part of Valgrind, a dynamic binary instrumentation 8ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown framework. 9ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 10436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov Copyright (C) 2000-2013 Julian Seward 11ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown jseward@acm.org 12ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 13ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown This program is free software; you can redistribute it and/or 14ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown modify it under the terms of the GNU General Public License as 15ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown published by the Free Software Foundation; either version 2 of the 16ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown License, or (at your option) any later version. 17ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 18ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown This program is distributed in the hope that it will be useful, but 19ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown WITHOUT ANY WARRANTY; without even the implied warranty of 20ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown General Public License for more details. 22ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 23ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown You should have received a copy of the GNU General Public License 24ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown along with this program; if not, write to the Free Software 25ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 26ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 02111-1307, USA. 27ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 28ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown The GNU General Public License is contained in the file COPYING. 29ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown*/ 30ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 31ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "pub_core_basics.h" 32ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "pub_core_libcbase.h" 33ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "pub_core_libcprint.h" 34436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov#include "pub_core_libcassert.h" 35436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov#include "pub_core_tooliface.h" // VG_(needs) 36ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "pub_core_mallocfree.h" 37ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "pub_core_options.h" 38ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "pub_core_replacemalloc.h" 39ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 40ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*------------------------------------------------------------*/ 41ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*--- Command line options ---*/ 42ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*------------------------------------------------------------*/ 43ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 44ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/* Nb: the allocator always rounds blocks up to a multiple of 45ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_MIN_MALLOC_SZB. 46ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown*/ 47ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 48ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/* DEBUG: print malloc details? default: NO */ 49ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff BrownBool VG_(clo_trace_malloc) = False; 50ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 51ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/* Minimum alignment in functions that don't specify alignment explicitly. 52ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown default: 0, i.e. use VG_MIN_MALLOC_SZB. */ 53ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff BrownUInt VG_(clo_alignment) = VG_MIN_MALLOC_SZB; 54ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 55ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 56436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy IvanovBool VG_(replacement_malloc_process_cmd_line_option)(const HChar* arg) 57ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown{ 58ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if VG_INT_CLO(arg, "--alignment", VG_(clo_alignment)) { 59ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (VG_(clo_alignment) < VG_MIN_MALLOC_SZB || 60ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(clo_alignment) > 4096 || 61ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(log2)( VG_(clo_alignment) ) == -1 /* not a power of 2 */) 62ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown { 63ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(fmsg_bad_option)(arg, 64ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "Alignment must be a power of 2 in the range %d..4096.\n", 65ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_MIN_MALLOC_SZB); 66ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 67ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 68ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 69ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown else if VG_BOOL_CLO(arg, "--trace-malloc", VG_(clo_trace_malloc)) {} 70ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown else 71ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return False; 72ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 73ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return True; 74ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 75ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 76436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy IvanovSizeT VG_(malloc_effective_client_redzone_size)(void) 77436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov{ 78436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov vg_assert(VG_(needs).malloc_replacement); 79436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov 80436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov return VG_(arena_redzone_size)(VG_AR_CLIENT); 81436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov} 82436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov 83ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*------------------------------------------------------------*/ 84ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*--- Useful functions ---*/ 85ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*------------------------------------------------------------*/ 86ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 87ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownvoid* VG_(cli_malloc) ( SizeT align, SizeT nbytes ) 88ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown{ 89ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // 'align' should be valid (ie. big enough and a power of two) by now. 90ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // VG_(arena_memalign)() will abort if it's not. 91ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (VG_MIN_MALLOC_SZB == align) 92ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return VG_(arena_malloc) ( VG_AR_CLIENT, "replacemalloc.cm.1", 93ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown nbytes ); 94ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown else 95ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return VG_(arena_memalign) ( VG_AR_CLIENT, "replacemalloc.cm.2", 96ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown align, nbytes ); 97ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 98ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 99ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownvoid VG_(cli_free) ( void* p ) 100ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown{ 101ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(arena_free) ( VG_AR_CLIENT, p ); 102ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 103ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 104ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff BrownBool VG_(addr_is_in_block)( Addr a, Addr start, SizeT size, SizeT rz_szB ) 105ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown{ 106ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return ( start - rz_szB <= a && a < start + size + rz_szB ); 107ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 108ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 109ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*--------------------------------------------------------------------*/ 110ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*--- end ---*/ 111ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*--------------------------------------------------------------------*/ 112