/** @interface_method_impl{PDMAPICHLPR3,pfnGetR3CritSect} */
static DECLCALLBACK(R0PTRTYPE(PPDMCRITSECT)) pdmR3ApicHlp_GetR0CritSect(PPDMDEVINS pDevIns)
{
PDMDEV_ASSERT_DEVINS(pDevIns);
PVM pVM = pDevIns->Internal.s.pVMR3;
RTR0PTR R0Ptr = MMHyperCCToR0(pVM, &pVM->pdm.s.CritSect);
LogFlow(("pdmR3ApicHlp_GetR0CritSect: caller='%s'/%d: return %RHv\n", pDevIns->pReg->szName, pDevIns->iInstance, R0Ptr));
return R0Ptr;
}
/**
* Initializes the tracing.
*
* @returns VBox status code
* @param pVM The cross context VM structure.
* @param cbEntry The trace entry size.
* @param cEntries The number of entries.
*/
static int dbgfR3TraceEnable(PVM pVM, uint32_t cbEntry, uint32_t cEntries)
{
/*
* Don't enable it twice.
*/
if (pVM->hTraceBufR3 != NIL_RTTRACEBUF)
return VERR_ALREADY_EXISTS;
/*
* Resolve default parameter values.
*/
int rc;
if (!cbEntry)
{
rc = CFGMR3QueryU32Def(CFGMR3GetChild(CFGMR3GetRoot(pVM), "DBGF"), "TraceBufEntrySize", &cbEntry, 128);
AssertRCReturn(rc, rc);
}
if (!cEntries)
{
rc = CFGMR3QueryU32Def(CFGMR3GetChild(CFGMR3GetRoot(pVM), "DBGF"), "TraceBufEntries", &cEntries, 4096);
AssertRCReturn(rc, rc);
}
/*
* Figure the required size.
*/
RTTRACEBUF hTraceBuf;
size_t cbBlock = 0;
rc = RTTraceBufCarve(&hTraceBuf, cEntries, cbEntry, 0 /*fFlags*/, NULL, &cbBlock);
if (rc != VERR_BUFFER_OVERFLOW)
{
AssertReturn(!RT_SUCCESS_NP(rc), VERR_IPE_UNEXPECTED_INFO_STATUS);
return rc;
}
/*
* Allocate a hyper heap block and carve a trace buffer out of it.
*
* Note! We ASSUME that the returned trace buffer handle has the same value
* as the heap block.
*/
cbBlock = RT_ALIGN_Z(cbBlock, PAGE_SIZE);
void *pvBlock;
rc = MMR3HyperAllocOnceNoRel(pVM, cbBlock, PAGE_SIZE, MM_TAG_DBGF, &pvBlock);
if (RT_FAILURE(rc))
return rc;
rc = RTTraceBufCarve(&hTraceBuf, cEntries, cbEntry, 0 /*fFlags*/, pvBlock, &cbBlock);
AssertRCReturn(rc, rc);
AssertRelease(hTraceBuf == (RTTRACEBUF)pvBlock);
AssertRelease((void *)hTraceBuf == pvBlock);
pVM->hTraceBufR3 = hTraceBuf;
pVM->hTraceBufR0 = MMHyperCCToR0(pVM, hTraceBuf);
pVM->hTraceBufRC = MMHyperCCToRC(pVM, hTraceBuf);
return VINF_SUCCESS;
}
