[RFC PATCH 7/8] riscv: Add RV64M instructions description

[LIU Zhiwei]

Signed-off-by: LIU Zhiwei <zhiwei_...@c-sky.com>
---
 riscv64.risu | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/riscv64.risu b/riscv64.risu
index 98141ab..f006dc8 100644
--- a/riscv64.risu
+++ b/riscv64.risu
@@ -139,3 +139,46 @@ SRLW RISCV 0000000 rs2:5 rs1:5 101 rd:5 0011011 \
 
 SRAW RISCV 0100000 rs2:5 rs1:5 101 rd:5 0011011 \
 !constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 }
+
+@RV64M
+
+MUL RISCV 0000001 rs2:5 rs1:5 000 rd:5 0110011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+MULH RISCV 0000001 rs2:5 rs1:5 001 rd:5 0110011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+MULHSU RISCV 0000001 rs2:5 rs1:5 010 rd:5 0110011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+MULHU RISCV 0000001 rs2:5 rs1:5 011 rd:5 0110011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+DIV RISCV 0000001 rs2:5 rs1:5 100 rd:5 0110011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+DIVU RISCV 0000001 rs2:5 rs1:5 101 rd:5 0110011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+REM RISCV 0000001 rs2:5 rs1:5 110 rd:5 0110011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+REMU RISCV 0000001 rs2:5 rs1:5 111 rd:5 0110011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+MULW RISCV 0000001 rs2:5 rs1:5 000 rd:5 0111011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+DIVW RISCV 0000001 rs2:5 rs1:5 100 rd:5 0111011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+DIVUW RISCV 0000001 rs2:5 rs1:5 101 rd:5 0111011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+REMW RISCV 0000001 rs2:5 rs1:5 110 rd:5 0111011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+REMUW RISCV 0000001 rs2:5 rs1:5 111 rd:5 0111011 \
+!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
+
+
-- 
2.23.0