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[Qemu-devel] [PATCH v6 18/26] disas: nanoMIPS: Comment the decoder of 'g
From: |
Aleksandar Markovic |
Subject: |
[Qemu-devel] [PATCH v6 18/26] disas: nanoMIPS: Comment the decoder of 'gpr4.zero' gpr encoding type |
Date: |
Thu, 27 Dec 2018 15:22:58 +0100 |
From: Aleksandar Markovic <address@hidden>
Comment the decoder of 'gpr4.zero' gpr encoding type in nanoMIPS
disassembler.
Signed-off-by: Aleksandar Markovic <address@hidden>
---
disas/nanomips.cpp | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/disas/nanomips.cpp b/disas/nanomips.cpp
index f4acba8..6578aa3 100644
--- a/disas/nanomips.cpp
+++ b/disas/nanomips.cpp
@@ -396,6 +396,33 @@ uint64 NMD::encode_rd1_from_rd(uint64 d)
}
+/*
+ * NMD::decode_gpr_gpr4_zero() - decoder for 'gpr4.zero' gpr encoding type
+ *
+ * Map a 4-bit code to the 5-bit register space according to this pattern:
+ *
+ * 1 0
+ * 5 4 3 2 1 0 9 8 7 6 5 4 3 2 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
+ *
+ * This pattern is the same one used for 'gpr4' gpr encoding type, except for
+ * the input value 3, that is mapped to the output value 0 instead of 11.
+ *
+ * Used in handling following instructions:
+ *
+ * - MOVE.BALC
+ * - MOVEP
+ * - SW[4X4]
+ */
uint64 NMD::decode_gpr_gpr4_zero(uint64 d)
{
static uint64 register_list[] = { 8, 9, 10, 0, 4, 5, 6, 7,
--
2.7.4
- [Qemu-devel] [PATCH v6 01/26] disas: nanoMIPS: Fix preamble text in nanomips.* files, (continued)
- [Qemu-devel] [PATCH v6 01/26] disas: nanoMIPS: Fix preamble text in nanomips.* files, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 02/26] disas: nanoMIPS: Remove functions that are not used, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 05/26] disas: nanoMIPS: Name some functions in a more descriptive way, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 06/26] disas: nanoMIPS: Fix an FP-related misnomer 1, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 03/26] disas: nanoMIPS: Fix a function misnomer, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 08/26] disas: nanoMIPS: Fix an FP-related misnomer 3, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 11/26] disas: nanoMIPS: Rename the decoder of 'gpr3' gpr encoding type, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 07/26] disas: nanoMIPS: Fix an FP-related misnomer 2, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 09/26] disas: nanoMIPS: Name more functions in a more descriptive way, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 16/26] disas: nanoMIPS: Comment the decoder of 'gpr4' gpr encoding type, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 18/26] disas: nanoMIPS: Comment the decoder of 'gpr4.zero' gpr encoding type,
Aleksandar Markovic <=
- [Qemu-devel] [PATCH v6 20/26] disas: nanoMIPS: Comment the decoder of 'gpr2.reg1' gpr encoding type, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 12/26] disas: nanoMIPS: Comment the decoder of 'gpr3' gpr encoding type, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 19/26] disas: nanoMIPS: Rename the decoder of 'gpr2.reg1' gpr encoding type, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 13/26] disas: nanoMIPS: Rename the decoder of 'gpr3.src.store' gpr encoding type, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 14/26] disas: nanoMIPS: Comment the decoder of 'gpr3.src.store' gpr encoding type, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 17/26] disas: nanoMIPS: Rename the decoder of 'gpr4.zero' gpr encoding type, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 25/26] disas: nanoMIPS: Reorder declarations and definitions of gpr decoders, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 21/26] disas: nanoMIPS: Rename the decoder of 'gpr2.reg2' gpr encoding type, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 23/26] disas: nanoMIPS: Rename the decoder of 'gpr1' gpr encoding type, Aleksandar Markovic, 2018/12/27
- [Qemu-devel] [PATCH v6 15/26] disas: nanoMIPS: Rename the decoder of 'gpr4' gpr encoding type, Aleksandar Markovic, 2018/12/27