RV64M Instructions

mulw

31-27	26-25	24-20	19-15	14-12	11-7	6-2	1-0
00000	01	rs2	rs1	000	rd	01110	11

Format:

mulw rd,rs1,rs2

Description:

Implementation:

x[rd] = sext((x[rs1] × x[rs2])[31:0])

divw

31-27	26-25	24-20	19-15	14-12	11-7	6-2	1-0
00000	01	rs2	rs1	100	rd	01110	11

Format:

divw rd,rs1,rs2

Description:

perform an 32 bits by 32 bits signed integer division of rs1 by rs2.

Implementation:

x[rd] = sext(x[rs1][31:0] /s x[rs2][31:0]

divuw

31-27	26-25	24-20	19-15	14-12	11-7	6-2	1-0
00000	01	rs2	rs1	101	rd	01110	11

Format:

divuw rd,rs1,rs2

Description:

perform an 32 bits by 32 bits unsigned integer division of rs1 by rs2.

Implementation:

x[rd] = sext(x[rs1][31:0] /u x[rs2][31:0])

remw

31-27	26-25	24-20	19-15	14-12	11-7	6-2	1-0
00000	01	rs2	rs1	110	rd	01110	11

Format:

remw rd,rs1,rs2

Description:

perform an 32 bits by 32 bits signed integer reminder of rs1 by rs2.

Implementation:

x[rd] = sext(x[rs1][31:0] %s x[rs2][31:0])

remuw

31-27	26-25	24-20	19-15	14-12	11-7	6-2	1-0
00000	01	rs2	rs1	111	rd	01110	11

Format:

remuw rd,rs1,rs2

Description:

perform an 32 bits by 32 bits unsigned integer reminder of rs1 by rs2.

Implementation:

x[rd] = sext(x[rs1][31:0] %u x[rs2][31:0])