Added method to retrieve memory location status.

It can inform if given location is cached or if given range
is invalid in address space.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>

1 files changed, 8 insertions, 0 deletions

diff --git a/qtmips_machine/machinedefs.h b/qtmips_machine/machinedefs.h
index 7d21f69..2bf0556 100644
--- a/qtmips_machine/machinedefs.h
+++ b/qtmips_machine/machinedefs.h
@@ -93,6 +93,14 @@ enum AluOp : std::uint8_t {
     ALU_OP_LAST // First impossible operation (just to be sure that we don't overflow)
 };
 
+enum LocationStatus {
+    LOCSTAT_NONE      = 0,
+    LOCSTAT_CACHED    = 1 << 0,
+    LOCSTAT_DIRTY     = 1 << 1,
+    LOCSTAT_READ_ONLY = 1 << 2,
+    LOCSTAT_ILLEGAL   = 1 << 3,
+};
+
 }
 
 #endif // MACHINEDEFS_H