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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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9332fb832a
08-skin-clientreq Introduce a systematic way for skins to distinguish each other's client requests. Uses the de-facto standard two-letter identifiers in the top two bytes of the client request code. Also changes the interface to SK_(handle_client_request) so that a skin can say whether or not it handled the request, which allows correct setting of the default return value if the request was not handled. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1251
198 lines
8.6 KiB
C
198 lines
8.6 KiB
C
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/*
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----------------------------------------------------------------
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Notice that the following BSD-style license applies to this one
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file (vg_memcheck.h) only. The entire rest of Valgrind is licensed
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under the terms of the GNU General Public License, version 2. See
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the COPYING file in the source distribution for details.
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----------------------------------------------------------------
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This file is part of MemCheck, a heavyweight Valgrind skin for
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detecting memory errors.
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Copyright (C) 2000-2002 Julian Seward. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. The origin of this software must not be misrepresented; you must
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not claim that you wrote the original software. If you use this
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software in a product, an acknowledgment in the product
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documentation would be appreciated but is not required.
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3. Altered source versions must be plainly marked as such, and must
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not be misrepresented as being the original software.
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4. The name of the author may not be used to endorse or promote
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products derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------
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Notice that the above BSD-style license applies to this one file
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(vg_memcheck.h) only. The entire rest of Valgrind is licensed under
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the terms of the GNU General Public License, version 2. See the
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COPYING file in the source distribution for details.
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----------------------------------------------------------------
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*/
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#ifndef __MEMCHECK_H
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#define __MEMCHECK_H
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/* This file is for inclusion into client (your!) code.
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You can use these macros to manipulate and query memory permissions
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inside your own programs.
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See comment near the top of valgrind.h on how to use them.
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*/
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#include "valgrind.h"
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typedef
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enum {
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VG_USERREQ__MAKE_NOACCESS = VG_USERREQ_SKIN_BASE('M','C'),
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VG_USERREQ__MAKE_WRITABLE,
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VG_USERREQ__MAKE_READABLE,
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VG_USERREQ__DISCARD,
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VG_USERREQ__CHECK_WRITABLE,
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VG_USERREQ__CHECK_READABLE,
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VG_USERREQ__MAKE_NOACCESS_STACK,
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VG_USERREQ__DO_LEAK_CHECK, /* untested */
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} Vg_MemCheckClientRequest;
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/* Client-code macros to manipulate the state of memory. */
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/* Mark memory at _qzz_addr as unaddressible and undefined for
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_qzz_len bytes. Returns an int handle pertaining to the block
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descriptions Valgrind will use in subsequent error messages. */
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#define VALGRIND_MAKE_NOACCESS(_qzz_addr,_qzz_len) \
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({unsigned int _qzz_res; \
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VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0 /* default return */, \
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VG_USERREQ__MAKE_NOACCESS, \
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_qzz_addr, _qzz_len, 0, 0); \
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_qzz_res; \
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})
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/* Similarly, mark memory at _qzz_addr as addressible but undefined
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for _qzz_len bytes. */
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#define VALGRIND_MAKE_WRITABLE(_qzz_addr,_qzz_len) \
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({unsigned int _qzz_res; \
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VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0 /* default return */, \
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VG_USERREQ__MAKE_WRITABLE, \
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_qzz_addr, _qzz_len, 0, 0); \
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_qzz_res; \
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})
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/* Similarly, mark memory at _qzz_addr as addressible and defined
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for _qzz_len bytes. */
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#define VALGRIND_MAKE_READABLE(_qzz_addr,_qzz_len) \
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({unsigned int _qzz_res; \
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VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0 /* default return */, \
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VG_USERREQ__MAKE_READABLE, \
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_qzz_addr, _qzz_len, 0, 0); \
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_qzz_res; \
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})
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/* Discard a block-description-handle obtained from the above three
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macros. After this, Valgrind will no longer be able to relate
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addressing errors to the user-defined block associated with the
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handle. The permissions settings associated with the handle remain
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in place. Returns 1 for an invalid handle, 0 for a valid
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handle. */
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#define VALGRIND_DISCARD(_qzz_blkindex) \
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({unsigned int _qzz_res; \
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VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0 /* default return */, \
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VG_USERREQ__DISCARD, \
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0, _qzz_blkindex, 0, 0); \
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_qzz_res; \
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})
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/* Client-code macros to check the state of memory. */
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/* Check that memory at _qzz_addr is addressible for _qzz_len bytes.
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If suitable addressibility is not established, Valgrind prints an
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error message and returns the address of the first offending byte.
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Otherwise it returns zero. */
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#define VALGRIND_CHECK_WRITABLE(_qzz_addr,_qzz_len) \
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({unsigned int _qzz_res; \
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VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \
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VG_USERREQ__CHECK_WRITABLE, \
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_qzz_addr, _qzz_len, 0, 0); \
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_qzz_res; \
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})
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/* Check that memory at _qzz_addr is addressible and defined for
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_qzz_len bytes. If suitable addressibility and definedness are not
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established, Valgrind prints an error message and returns the
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address of the first offending byte. Otherwise it returns zero. */
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#define VALGRIND_CHECK_READABLE(_qzz_addr,_qzz_len) \
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({unsigned int _qzz_res; \
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VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \
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VG_USERREQ__CHECK_READABLE, \
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_qzz_addr, _qzz_len, 0, 0); \
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_qzz_res; \
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})
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/* Use this macro to force the definedness and addressibility of a
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value to be checked. If suitable addressibility and definedness
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are not established, Valgrind prints an error message and returns
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the address of the first offending byte. Otherwise it returns
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zero. */
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#define VALGRIND_CHECK_DEFINED(__lvalue) \
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(void) \
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VALGRIND_CHECK_READABLE( \
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(volatile unsigned char *)&(__lvalue), \
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(unsigned int)(sizeof (__lvalue)))
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/* Mark memory, intended to be on the client's stack, at _qzz_addr as
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unaddressible and undefined for _qzz_len bytes. Does not return a
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value. The record associated with this setting will be
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automatically removed by Valgrind when the containing routine
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exits. */
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#define VALGRIND_MAKE_NOACCESS_STACK(_qzz_addr,_qzz_len) \
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{unsigned int _qzz_res; \
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VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \
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VG_USERREQ__MAKE_NOACCESS_STACK, \
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_qzz_addr, _qzz_len, 0, 0); \
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}
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/* Do a memory leak check mid-execution.
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Currently implemented but untested.
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*/
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#define VALGRIND_DO_LEAK_CHECK \
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{unsigned int _qzz_res; \
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VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \
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VG_USERREQ__DO_LEAK_CHECK, \
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0, 0, 0, 0); \
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}
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#endif
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