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-rw-r--r--riscv/insns/sub.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/riscv/insns/sub.h b/riscv/insns/sub.h
new file mode 100644
index 0000000..0618fb8
--- /dev/null
+++ b/riscv/insns/sub.h
@@ -0,0 +1,2 @@
+RD = sext32(RS - RT);
+