diff options
Diffstat (limited to 'src/arch/sparc/faults.cc')
| -rw-r--r-- | src/arch/sparc/faults.cc | 32 |
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 |