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-rw-r--r--src/arch/sparc/faults.cc32
1 files changed, 31 insertions, 1 deletions
diff --git a/src/arch/sparc/faults.cc b/src/arch/sparc/faults.cc
index 57b4d4d86..7b7765935 100644
--- a/src/arch/sparc/faults.cc
+++ b/src/arch/sparc/faults.cc
@@ -33,6 +33,10 @@
#include "cpu/thread_context.hh"
#include "cpu/base.hh"
#include "base/trace.hh"
+#if !FULL_SYSTEM
+#include "sim/process.hh"
+#include "mem/page_table.hh"
+#endif
namespace SparcISA
{
@@ -218,6 +222,13 @@ TrapType TrapInstruction::_baseTrapType = 0x100;
FaultPriority TrapInstruction::_priority = 16;
FaultStat TrapInstruction::_count;
+#if !FULL_SYSTEM
+FaultName PageTableFault::_name = "page_table_fault";
+TrapType PageTableFault::_trapType = 0x0000;
+FaultPriority PageTableFault::_priority = 0;
+FaultStat PageTableFault::_count;
+#endif
+
#if FULL_SYSTEM
void SparcFault::invoke(ThreadContext * tc)
@@ -249,9 +260,28 @@ void SparcFault::invoke(ThreadContext * tc)
void TrapInstruction::invoke(ThreadContext * tc)
{
- tc->syscall(syscall_num);
+ // Should be handled in ISA.
}
+void PageTableFault::invoke(ThreadContext *tc)
+{
+ Process *p = tc->getProcessPtr();
+
+ // address is higher than the stack region or in the current stack region
+ if (vaddr > p->stack_base || vaddr > p->stack_min)
+ FaultBase::invoke(tc);
+
+ // We've accessed the next page
+ if (vaddr > p->stack_min - PageBytes) {
+ p->stack_min -= PageBytes;
+ if (p->stack_base - p->stack_min > 8*1024*1024)
+ fatal("Over max stack size for one thread\n");
+ p->pTable->allocate(p->stack_min, PageBytes);
+ warn("Increasing stack size by one page.");
+ } else {
+ FaultBase::invoke(tc);
+ }
+}
#endif
} // namespace SparcISA