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ARM: Support switchover with hardware table walkers

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This commit is contained in:
Ali Saidi
2010-12-07 16:19:57 -08:00
parent 658849d101
commit 21bfbd422c
5 changed files with 43 additions and 2 deletions
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21
src/cpu/base.cc
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@@ -33,6 +33,7 @@
#include <string>
#include <sstream>
#include "arch/tlb.hh"
#include "base/cprintf.hh"
#include "base/loader/symtab.hh"
#include "base/misc.hh"
@@ -359,6 +360,26 @@ BaseCPU::takeOverFrom(BaseCPU *oldCPU, Port *ic, Port *dc)
if (DTRACE(Context))
ThreadContext::compare(oldTC, newTC);
*/
Port *old_itb_port, *old_dtb_port, *new_itb_port, *new_dtb_port;
old_itb_port = oldTC->getITBPtr()->getPort();
old_dtb_port = oldTC->getDTBPtr()->getPort();
new_itb_port = newTC->getITBPtr()->getPort();
new_dtb_port = newTC->getDTBPtr()->getPort();
// Move over any table walker ports if they exist
if (new_itb_port && !new_itb_port->isConnected()) {
assert(old_itb_port);
Port *peer = old_itb_port->getPeer();;
new_itb_port->setPeer(peer);
peer->setPeer(new_itb_port);
}
if (new_dtb_port && !new_dtb_port->isConnected()) {
assert(old_dtb_port);
Port *peer = old_dtb_port->getPeer();;
new_dtb_port->setPeer(peer);
peer->setPeer(new_dtb_port);
}
}
#if FULL_SYSTEM