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Diffstat (limited to 'riscv/insns/c_addiw.h')
-rw-r--r--riscv/insns/c_addiw.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/riscv/insns/c_addiw.h b/riscv/insns/c_addiw.h
index 1b81834..27ffd8f 100644
--- a/riscv/insns/c_addiw.h
+++ b/riscv/insns/c_addiw.h
@@ -1,3 +1,4 @@
require_extension('C');
require_rv64;
-WRITE_RD(sext32(RVC_RS2 + insn.rvc_imm()));
+require(insn.rvc_rd() != 0);
+WRITE_RD(sext32(RVC_RS1 + insn.rvc_imm()));