| 1 | /* $Id: tstVMMR0CallHost-1.cpp 4071 2007-08-07 17:07:59Z vboxsync $ */
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| 2 | /** @file
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| 3 | * Testcase for the VMMR0JMPBUF operations.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 innotek GmbH
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License as published by the Free Software Foundation,
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| 13 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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| 14 | * distribution. VirtualBox OSE is distributed in the hope that it will
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| 15 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | /*******************************************************************************
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| 19 | * Header Files *
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| 20 | *******************************************************************************/
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| 21 | #include <iprt/runtime.h>
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| 22 | #include <iprt/string.h>
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| 23 | #include <iprt/stream.h>
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| 24 | #include <iprt/alloca.h>
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| 25 | #include <VBox/err.h>
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| 26 |
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| 27 | #define IN_VMM_R0
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| 28 | #define IN_RING0 /* pretent we're in Ring-0 to get the prototypes. */
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| 29 | #include <VBox/vmm.h>
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| 30 | #include "VMMInternal.h"
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| 31 |
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| 32 |
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| 33 |
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| 34 | /*******************************************************************************
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| 35 | * Global Variables *
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| 36 | *******************************************************************************/
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| 37 | /** The jump buffer. */
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| 38 | static VMMR0JMPBUF g_Jmp;
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| 39 | /** The saved stack. */
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| 40 | static uint8_t g_Stack[8192];
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| 41 |
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| 42 |
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| 43 | int foo(int i, int iZero, int iMinusOne)
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| 44 | {
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| 45 | char *pv = (char *)alloca(i + 32);
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| 46 | RTStrPrintf(pv, i + 32, "i=%d%*s\n", i, i+32, "");
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| 47 | if ((i % 7) == 0)
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| 48 | {
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| 49 | int rc = vmmR0CallHostLongJmp(&g_Jmp, 42);
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| 50 | if (!rc)
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| 51 | return i + 10000;
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| 52 | return -1;
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| 53 | }
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| 54 | return i;
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| 55 | }
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| 56 |
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| 57 |
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| 58 | DECLCALLBACK(int) tst2(intptr_t i)
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| 59 | {
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| 60 | if (i < 0 || i > 8192)
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| 61 | {
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| 62 | RTPrintf("tstVMMR0CallHost-1: FAILURE - i=%d is out of range [0..8192]\n", i);
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| 63 | return 1;
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| 64 | }
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| 65 | int iExpect = (i % 7) == 0 ? i + 10000 : i;
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| 66 | int rc = foo(i, 0, -1);
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| 67 | if (rc != iExpect)
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| 68 | {
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| 69 | RTPrintf("tstVMMR0CallHost-1: FAILURE - i=%d rc=%d expected=%d\n", i, rc, iExpect);
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| 70 | return 1;
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| 71 | }
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| 72 | return 0;
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| 73 | }
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| 74 |
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| 75 | int tst(int iFrom, int iTo, int iInc)
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| 76 | {
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| 77 | for (int i = iFrom; i < iTo; i += iInc)
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| 78 | {
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| 79 | int rc = vmmR0CallHostSetJmp(&g_Jmp, (PFNVMMR0SETJMP)tst2, (PVM)i);
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| 80 | if (rc != 0 && rc != 42)
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| 81 | {
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| 82 | RTPrintf("tstVMMR0CallHost-1: FAILURE - i=%d rc=%d setjmp\n", i, rc);
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| 83 | return 1;
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| 84 | }
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| 85 | }
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| 86 | return 0;
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| 87 | }
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| 88 |
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| 89 |
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| 90 | int main()
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| 91 | {
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| 92 | /*
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| 93 | * Init.
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| 94 | */
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| 95 | RTR3Init(false);
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| 96 | RTPrintf("tstVMMR0CallHost-1: Testing...\n");
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| 97 | g_Jmp.pvSavedStack = (RTR0PTR)&g_Stack[0];
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| 98 |
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| 99 | /*
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| 100 | * Try about 1000 long jumps with increasing stack size..
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| 101 | */
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| 102 | int rc = tst(0, 7000, 1);
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| 103 | if (!rc)
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| 104 | rc = tst(7599, 0, -1);
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| 105 |
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| 106 | if (!rc)
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| 107 | RTPrintf("tstVMMR0CallHost-1: SUCCESS\n");
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| 108 | else
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| 109 | RTPrintf("tstVMMR0CallHost-1: FAILED\n");
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| 110 | return !!rc;
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| 111 | }
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