Support setting ISA/subsets with --isa flag

[riscv-isa-sim.git] / riscv / insns / divu.h

diff --git a/riscv/insns/divu.h b/riscv/insns/divu.h
index 681afd217bbbda882d88de0c7a93848c8ed0d6fa..31d758560b8e5b9074c74292b871f32bd5207d06 100644 (file)
--- a/riscv/insns/divu.h
+++ b/riscv/insns/divu.h
@@ -1,4 +1,7 @@
-if(RS2 == 0)
-  RD = UINT64_MAX;
+require_extension('M');
+reg_t lhs = zext_xlen(RS1);
+reg_t rhs = zext_xlen(RS2);
+if(rhs == 0)
+  WRITE_RD(UINT64_MAX);
 else
-  RD = sext_xprlen(zext_xprlen(RS1) / zext_xprlen(RS2));
+  WRITE_RD(sext_xlen(lhs / rhs));