Support setting ISA/subsets with --isa flag

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

diff --git a/riscv/insns/divw.h b/riscv/insns/divw.h
index e595c85af0c8af441552ac7fa3a7c9d84d4721a8..11be17e4c33d450244c42d98c99d2c31c8a35bd9 100644 (file)
--- a/riscv/insns/divw.h
+++ b/riscv/insns/divw.h
@@ -1,2 +1,8 @@
-RC = sext32(int32_t(RA)/int32_t(RB));
-
+require_extension('M');
+require_rv64;
+sreg_t lhs = sext32(RS1);
+sreg_t rhs = sext32(RS2);
+if(rhs == 0)
+  WRITE_RD(UINT64_MAX);
+else
+  WRITE_RD(sext32(lhs / rhs));