This patch is introducing some methods in StaticInst so that is possible
to get the instruction size in byte of the instruction (can be 2 bytes
in Thumb) and the correct opcode (The machInst field contains some
appended metadata)
Change-Id: I3bed4d9fd7c77feaeded40ded192afe445d306ea
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/6781
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
{
return intWidth;
}
+
+ /** Returns the byte size of current instruction */
+ ssize_t
+ instSize() const
+ {
+ return (!machInst.thumb || machInst.bigThumb) ? 4 : 2;
+ }
+
+ /**
+ * Returns the real encoding of the instruction:
+ * the machInst field is in fact always 64 bit wide and
+ * contains some instruction metadata, which means it differs
+ * from the real opcode.
+ */
+ MachInst
+ encoding() const
+ {
+ return static_cast<MachInst>(mask(instSize() * 8));
+ }
};
}