/**
* Links the segments of the module into the address space.
*
* @returns VBox status code on failure.
*
* @param hAs The address space.
* @param hMod The module.
* @param paSegs Array of segment indexes and load addresses.
* @param cSegs The number of segments in the array.
*/
static int dbgDiggerCommonLinkElfSegs(RTDBGAS hAs, RTDBGMOD hMod, PDBGDIGGERELFSEG paSegs, uint32_t cSegs)
{
for (uint32_t i = 0; i < cSegs; i++)
if (paSegs[i].iSeg != NIL_RTDBGSEGIDX)
{
int rc = RTDbgAsModuleLinkSeg(hAs, hMod, paSegs[i].iSeg, paSegs[i].uLoadAddr, RTDBGASLINK_FLAGS_REPLACE);
if (RT_FAILURE(rc))
{
RTDbgAsModuleUnlink(hAs, hMod);
return rc;
}
}
return VINF_SUCCESS;
}
/**
* Wrapper around RTDbgAsModuleByName and RTDbgAsModuleUnlink.
*
* Unlinks all mappings matching the given module name.
*
* @returns VBox status code.
* @param pUVM The user mode VM handle.
* @param hDbgAs The address space handle.
* @param pszModName The name of the module to unlink.
*/
VMMR3DECL(int) DBGFR3AsUnlinkModuleByName(PUVM pUVM, RTDBGAS hDbgAs, const char *pszModName)
{
/*
* Input validation.
*/
UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
if (hRealAS == NIL_RTDBGAS)
return VERR_INVALID_HANDLE;
/*
* Do the job.
*/
RTDBGMOD hMod;
int rc = RTDbgAsModuleByName(hRealAS, pszModName, 0, &hMod);
if (RT_SUCCESS(rc))
{
for (;;)
{
rc = RTDbgAsModuleUnlink(hRealAS, hMod);
RTDbgModRelease(hMod);
if (RT_FAILURE(rc))
break;
rc = RTDbgAsModuleByName(hRealAS, pszModName, 0, &hMod);
if (RT_FAILURE_NP(rc))
{
if (rc == VERR_NOT_FOUND)
rc = VINF_SUCCESS;
break;
}
}
}
RTDbgAsRelease(hRealAS);
return rc;
}
/**
* Relocates the RC address space.
*
* @param pUVM The user mode VM handle.
* @param offDelta The relocation delta.
*/
void dbgfR3AsRelocate(PUVM pUVM, RTGCUINTPTR offDelta)
{
/*
* We will relocate the raw-mode context modules by offDelta if they have
* been injected into the the DBGF_AS_RC map.
*/
if ( pUVM->dbgf.s.afAsAliasPopuplated[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_RC)]
&& offDelta != 0)
{
RTDBGAS hAs = pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_RC)];
/* Take a snapshot of the modules as we might have overlapping
addresses between the previous and new mapping. */
RTDbgAsLockExcl(hAs);
uint32_t cModules = RTDbgAsModuleCount(hAs);
if (cModules > 0 && cModules < _4K)
{
struct DBGFASRELOCENTRY
{
RTDBGMOD hDbgMod;
RTRCPTR uOldAddr;
} *paEntries = (struct DBGFASRELOCENTRY *)RTMemTmpAllocZ(sizeof(paEntries[0]) * cModules);
if (paEntries)
{
/* Snapshot. */
for (uint32_t i = 0; i < cModules; i++)
{
paEntries[i].hDbgMod = RTDbgAsModuleByIndex(hAs, i);
AssertLogRelMsg(paEntries[i].hDbgMod != NIL_RTDBGMOD, ("iModule=%#x\n", i));
RTDBGASMAPINFO aMappings[1] = { { 0, 0 } };
uint32_t cMappings = 1;
int rc = RTDbgAsModuleQueryMapByIndex(hAs, i, &aMappings[0], &cMappings, 0 /*fFlags*/);
if (RT_SUCCESS(rc) && cMappings == 1 && aMappings[0].iSeg == NIL_RTDBGSEGIDX)
paEntries[i].uOldAddr = (RTRCPTR)aMappings[0].Address;
else
AssertLogRelMsgFailed(("iModule=%#x rc=%Rrc cMappings=%#x.\n", i, rc, cMappings));
}
/* Unlink them. */
for (uint32_t i = 0; i < cModules; i++)
{
int rc = RTDbgAsModuleUnlink(hAs, paEntries[i].hDbgMod);
AssertLogRelMsg(RT_SUCCESS(rc), ("iModule=%#x rc=%Rrc hDbgMod=%p\n", i, rc, paEntries[i].hDbgMod));
}
/* Link them at the new locations. */
for (uint32_t i = 0; i < cModules; i++)
{
RTRCPTR uNewAddr = paEntries[i].uOldAddr + offDelta;
int rc = RTDbgAsModuleLink(hAs, paEntries[i].hDbgMod, uNewAddr,
RTDBGASLINK_FLAGS_REPLACE);
AssertLogRelMsg(RT_SUCCESS(rc),
("iModule=%#x rc=%Rrc hDbgMod=%p %RRv -> %RRv\n", i, rc, paEntries[i].hDbgMod,
paEntries[i].uOldAddr, uNewAddr));
RTDbgModRelease(paEntries[i].hDbgMod);
}
RTMemTmpFree(paEntries);
}
else
AssertLogRelMsgFailed(("No memory for %#x modules.\n", cModules));
}
else
AssertLogRelMsgFailed(("cModules=%#x\n", cModules));
RTDbgAsUnlockExcl(hAs);
}
}
