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-rw-r--r--riscv/insns/mhaccu.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/riscv/insns/mhaccu.h b/riscv/insns/mhaccu.h
new file mode 100644
index 00000000..e9fb8020
--- /dev/null
+++ b/riscv/insns/mhaccu.h
@@ -0,0 +1,4 @@
+require_extension('P');
+require_rv32;
+uint64_t mres = reg_t((uint32_t)RS1) * reg_t((uint32_t)RS2);
+WRITE_RD(RD + (mres >> 32)); \ No newline at end of file