From dffcf177dcfb789118f4eb519e088435d62ae42d Mon Sep 17 00:00:00 2001 From: Aleksandar Markovic Date: Wed, 26 Dec 2018 18:41:23 +0100 Subject: disas: nanoMIPS: Comment the decoder of 'gpr1' gpr encoding type Comment the decoder of 'gpr1' gpr encoding type in nanoMIPS disassembler. Reviewed-by: Aleksandar Rikalo Signed-off-by: Aleksandar Markovic --- disas/nanomips.cpp | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'disas') diff --git a/disas/nanomips.cpp b/disas/nanomips.cpp index 6f15821..23556b4 100644 --- a/disas/nanomips.cpp +++ b/disas/nanomips.cpp @@ -389,6 +389,27 @@ uint64 NMD::decode_gpr_gpr3_src_store(uint64 d) } +/* + * NMD::decode_gpr_gpr1() - decoder for 'gpr1' gpr encoding type + * + * Map a 1-bit code to the 5-bit register space according to this pattern: + * + * 1 0 + * | | + * | | + * | └---------------------┐ + * └---------------------┐ | + * | | + * | | + * | | + * | | + * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 + * 3 2 1 0 + * + * Used in handling following instruction: + * + * - MOVE.BALC + */ uint64 NMD::decode_gpr_gpr1(uint64 d) { static uint64 register_list[] = { 4, 5 }; -- cgit v1.1