Added simple example plugin creating instruction histogram

riscv/incl/iss/arch/rv32imac.h

@@ -46,6 +46,8 @@ struct rv32imac;
 template<>
 struct traits<rv32imac> {
 
+	constexpr static char const* const core_type = "RV32IMAC";
+    
     enum constants {XLEN=32, XLEN2=64, XLEN_BIT_MASK=31, PCLEN=32, fence=0, fencei=1, fencevmal=2, fencevmau=3, MISA_VAL=1075056897, PGSIZE=4096, PGMASK=4095};
 
     enum reg_e {
@@ -128,6 +130,8 @@ struct rv32imac: public arch_if {
     rv32imac();
     ~rv32imac();
 
+	const std::string core_type_name() const override {return traits<rv32imac>::core_type;}
+	
     void reset(uint64_t address=0) override;
 
     uint8_t* get_regs_base_ptr() override;

riscv/incl/iss/arch/rv64ia.h

@@ -46,6 +46,8 @@ struct rv64ia;
 template<>
 struct traits<rv64ia> {
 
+	constexpr static char const* const core_type = "RV64IA";
+    
     enum constants {XLEN=64, XLEN2=128, XLEN_BIT_MASK=63, PCLEN=64, fence=0, fencei=1, fencevmal=2, fencevmau=3, MISA_VAL=2147746049, PGSIZE=4096, PGMASK=4095};
 
     enum reg_e {
@@ -128,6 +130,8 @@ struct rv64ia: public arch_if {
     rv64ia();
     ~rv64ia();
 
+	const std::string core_type_name() const override {return traits<rv64ia>::core_type;}
+	
     void reset(uint64_t address=0) override;
 
     uint8_t* get_regs_base_ptr() override;

riscv/incl/iss/plugin/instruction_count.h

@@ -0,0 +1,73 @@
+/*******************************************************************************
+ * Copyright (C) 2017, MINRES Technologies GmbH
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Contributors:
+ *       eyck@minres.com - initial API and implementation
+ ******************************************************************************/
+
+#ifndef _ISS_PLUGIN_CYCLE_COUNTER_H_
+#define _ISS_PLUGIN_CYCLE_COUNTER_H_
+
+#include <iss/vm_plugin.h>
+#include <json/json.h>
+#include <string>
+
+namespace iss {
+namespace plugin {
+
+class instruction_count: public iss::vm_plugin {
+	struct instr_delay {
+		std::string instr_name;
+		size_t size;
+		size_t not_taken_delay;
+		size_t taken_delay;
+	};
+public:
+	instruction_count() = delete;
+
+	instruction_count(std::string config_file_name);
+
+	virtual ~instruction_count();
+
+	bool registration(const char* const version, vm_if& arch) override;
+
+	sync_type get_sync() override {return POST_SYNC;};
+
+	void callback(unsigned core_id, unsigned cluster_id, sync_type phase, unsigned instr_id) override;
+private:
+    Json::Value root;
+    std::vector<instr_delay> delays;
+    std::vector<uint64_t> rep_counts;
+};
+
+}
+}
+
+#endif /* _ISS_PLUGIN_CYCLE_COUNTER_H_ */