[sim] stubs for perfctr instructions

diff --git a/riscv/insns/rdcycle.h b/riscv/insns/rdcycle.h
new file mode 100644 (file)
index 0000000..96f2a74
--- /dev/null
+++ b/riscv/insns/rdcycle.h
@@ -0,0 +1 @@
+throw trap_illegal_instruction;

diff --git a/riscv/insns/rdinstret.h b/riscv/insns/rdinstret.h
new file mode 100644 (file)
index 0000000..96f2a74
--- /dev/null
+++ b/riscv/insns/rdinstret.h
@@ -0,0 +1 @@
+throw trap_illegal_instruction;

diff --git a/riscv/insns/rdtime.h b/riscv/insns/rdtime.h
new file mode 100644 (file)
index 0000000..96f2a74
--- /dev/null
+++ b/riscv/insns/rdtime.h
@@ -0,0 +1 @@
+throw trap_illegal_instruction;