suite/tests/client-interface/cleancall.c

/* **********************************************************
 * Copyright (c) 2012-2013 Google, Inc.  All rights reserved.
 * Copyright (c) 2008 VMware, Inc.  All rights reserved.
 * **********************************************************/

/*
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * * Neither the name of VMware, Inc. nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without
 *   specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL VMWARE, INC. OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

/* We would have the client handle clean call crashes, but today they
 * go to the app (PR 213600); plus there is no signal/exception event
 * on linux (PR 304708)
 */

#include "tools.h" /* for print() */

#ifdef UNIX
# include <unistd.h>
# include <signal.h>
# include <ucontext.h>
# include <errno.h>
# include <stdlib.h>
#endif

#include <setjmp.h>

static void foo(void)
{ /* nothing: just a marker */ }

SIGJMP_BUF mark;

static int count;

#ifdef UNIX

static void
signal_handler(int sig)
{
    if (sig == SIGSEGV) {
        count++;
        print("Access violation, instance %d\n", count);
        SIGLONGJMP(mark, count);
    }
    exit(-1);
}

#else

# include <windows.h>
/* top-level exception handler */
static LONG
our_top_handler(struct _EXCEPTION_POINTERS * pExceptionInfo)
{
    if (pExceptionInfo->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION) {
#if VERBOSE
        /* DR gets the target addr wrong for far call/jmp so we don't print it */
        print("\tPC "PFX" tried to %s address "PFX"\n",
            pExceptionInfo->ExceptionRecord->ExceptionAddress,
            (pExceptionInfo->ExceptionRecord->ExceptionInformation[0]==0)?"read":"write",
            pExceptionInfo->ExceptionRecord->ExceptionInformation[1]);
#endif
        count++;
        print("Access violation, instance %d\n", count);
        SIGLONGJMP(mark, count);
    }
    print("Exception "PFX" occurred, process about to die silently\n",
          pExceptionInfo->ExceptionRecord->ExceptionCode);
    return EXCEPTION_EXECUTE_HANDLER; /* => global unwind and silent death */
}
#endif

int main(int argc, char *argv[])
{
    int i, j;
#ifdef UNIX
    intercept_signal(SIGSEGV, (handler_3_t)signal_handler, false);
#else
    SetUnhandledExceptionFilter((LPTOP_LEVEL_EXCEPTION_FILTER) our_top_handler);
#endif

    /* Each test in cleancall.dll.c crashes at the end */
    for (j = 0; j < 5; j++) {
        i = SIGSETJMP(mark);
        if (i == 0) {
            print("testing clean calls\n");
            /* use 2 NOPs + call to indicate it's ok to do the tests
             * now that the handlers are all set up
             */
            NOP; NOP;
            foo();
            print("did not crash\n");
        }
    }
    print("done testing clean calls\n");

    return 0;
}