Changeset 61793 in vbox for trunk/src/VBox/VMM

Timestamp:

Jun 21, 2016 2:06:00 PM (9 years ago)

Author:

vboxsync

Message:

tstVMMR0CallHost-1: Prepped for testing small variations in caller stack depth.

File:

• trunk/src/VBox/VMM/testcase/tstVMMR0CallHost-1.cpp (modified) (3 diffs)

trunk/src/VBox/VMM/testcase/tstVMMR0CallHost-1.cpp

@@ -24 +24 @@
 #include <iprt/alloca.h>
 #include <iprt/initterm.h>
+#include <iprt/rand.h>
 #include <iprt/string.h>
 #include <iprt/stream.h>
@@ -100 +101 @@
 
 
+DECLCALLBACK(DECL_NO_INLINE(RT_NOTHING, int)) stackRandom(PVMMR0JMPBUF pJmpBuf, PFNVMMR0SETJMP pfn, PVM pVM, PVMCPU pVCpu)
+{
+#if 0
+    uint32_t            cbRand  = RTRandU32Ex(1, 64);
+#else
+    uint32_t            cbRand  = 1;
+#endif
+    uint8_t volatile   *pabFuzz = (uint8_t volatile *)alloca(cbRand);
+    memset((void *)pabFuzz, 0xfa, cbRand);
+    int rc = vmmR0CallRing3SetJmp(pJmpBuf, pfn, pVM, pVCpu);
+    memset((void *)pabFuzz, 0xaf, cbRand);
+    return rc;
+}
+
+
 void tst(int iFrom, int iTo, int iInc)
 {
@@ -117 +133 @@
     for (int i = iFrom, iItr = 0; i != iTo; i += iInc, iItr++)
     {
-        int rc = vmmR0CallRing3SetJmp(&g_Jmp, (PFNVMMR0SETJMP)tst2, (PVM)(uintptr_t)i, 0);
+        int rc = stackRandom(&g_Jmp, (PFNVMMR0SETJMP)tst2, (PVM)(uintptr_t)i, 0);
         RTTESTI_CHECK_MSG_RETV(rc == 0 || rc == 42, ("i=%d rc=%d setjmp; cbFoo=%#x cbFooUsed=%#x\n", i, rc, g_cbFoo, g_cbFooUsed));