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[Qemu-devel] [PULL 27/41] disas: nanoMIPS: Comment the decoder of 'gpr4'
From: |
Aleksandar Markovic |
Subject: |
[Qemu-devel] [PULL 27/41] disas: nanoMIPS: Comment the decoder of 'gpr4' gpr encoding type |
Date: |
Fri, 28 Dec 2018 10:25:34 +0100 |
From: Aleksandar Markovic <address@hidden>
Comment the decoder of 'gpr4' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <address@hidden>
Signed-off-by: Aleksandar Markovic <address@hidden>
---
disas/nanomips.cpp | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/disas/nanomips.cpp b/disas/nanomips.cpp
index 5f6c93c..a086f65 100644
--- a/disas/nanomips.cpp
+++ b/disas/nanomips.cpp
@@ -406,6 +406,32 @@ uint64 NMD::encode_gpr4_zero(uint64 d)
}
+/*
+ * NMD::decode_gpr_gpr4() - decoder for 'gpr4' 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
+ *
+ * Used in handling following instructions:
+ *
+ * - ADDU[4X4]
+ * - LW[4X4]
+ * - MOVEP[REV]
+ * - MUL[4X4]
+ * - SW[4X4]
+ */
uint64 NMD::decode_gpr_gpr4(uint64 d)
{
static uint64 register_list[] = { 8, 9, 10, 11, 4, 5, 6, 7,
--
2.7.4
- [Qemu-devel] [PULL 06/41] target/mips: MXU: Add missing opcodes/decoding for LX* instructions, (continued)
- [Qemu-devel] [PULL 06/41] target/mips: MXU: Add missing opcodes/decoding for LX* instructions, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 10/41] target/mips: Support R5900 three-operand MADD1 and MADDU1 instructions, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 08/41] target/mips: MXU: Improve the comment containing MXU overview, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 13/41] disas: nanoMIPS: Remove functions that are not used, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 25/41] disas: nanoMIPS: Comment the decoder of 'gpr3.src.store' gpr encoding type, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 23/41] disas: nanoMIPS: Comment the decoder of 'gpr3' gpr encoding type, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 26/41] disas: nanoMIPS: Rename the decoder of 'gpr4' gpr encoding type, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 38/41] tests/tcg: mips: Test R5900 three-operand MADD, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 14/41] disas: nanoMIPS: Fix a function misnomer, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 28/41] disas: nanoMIPS: Rename the decoder of 'gpr4.zero' gpr encoding type, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 27/41] disas: nanoMIPS: Comment the decoder of 'gpr4' gpr encoding type,
Aleksandar Markovic <=
- [Qemu-devel] [PULL 21/41] disas: nanoMIPS: Fix order of more invocations, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 24/41] disas: nanoMIPS: Rename the decoder of 'gpr3.src.store' gpr encoding type, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 20/41] disas: nanoMIPS: Name more functions in a more descriptive way, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 19/41] disas: nanoMIPS: Fix an FP-related misnomer 3, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 18/41] disas: nanoMIPS: Fix an FP-related misnomer 2, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 22/41] disas: nanoMIPS: Rename the decoder of 'gpr3' gpr encoding type, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 16/41] disas: nanoMIPS: Name some functions in a more descriptive way, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 17/41] disas: nanoMIPS: Fix an FP-related misnomer 1, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 15/41] disas: nanoMIPS: Fix order of some invocations, Aleksandar Markovic, 2018/12/28
- [Qemu-devel] [PULL 35/41] disas: nanoMIPS: Comment the decoder of 'gpr1' gpr encoding type, Aleksandar Markovic, 2018/12/28