Merge pull request #15 from mariusmm/rv64

Rv64

.gitignore

@@ -45,3 +45,7 @@ doc/Drawings.odg
 doc/html
 env.sh
 gh-md-toc
+*.dump
+*.log
+.idea/
+.vscode/

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "spdlog"]
+	path = spdlog
+	url = https://github.com/gabime/spdlog

CMakeLists.txt

@@ -15,6 +15,7 @@ set(CMAKE_C_STANDARD 17)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
 set(CMAKE_PREFIX_PATH ../systemc-2.3.3/build/ ../spdlog/install/)
+add_definitions(-DCMAKE_EXPORT_COMPILE_COMMANDS=ON)
 
 add_compile_options(-O3 -g -Wall -Wextra -Wunused-function -Wpedantic)
 

doc/passed_tests.md

@@ -0,0 +1,244 @@
+# Tests
+
+Using riscv-arch-test (commit #acf857c68f3e5a476da24cff653b51176ac14dbf)
+
+## Setup
+
++ Copy doc/riscv-arch-test/RISCV-TLM to riscv-arch-test/riscv-target/
++ Run tests
+
+```make verify```
+
+## Results
+### RV 64
+
+#### I Extension
++ Check add-01                    ... OK 
++ Check addi-01                   ... OK 
++ Check addiw-01                  ... OK 
++ Check addw-01                   ... OK 
++ Check and-01                    ... OK 
++ Check andi-01                   ... OK 
++ Check auipc-01                  ... OK 
++ Check beq-01                    ... OK 
++ Check bge-01                    ... OK 
++ Check bgeu-01                   ... OK 
++ Check blt-01                    ... OK 
++ Check bltu-01                   ... OK 
++ Check bne-01                    ... OK 
++ Check fence-01                  ... OK 
++ Check jal-01                    ... OK 
++ Check jalr-01                   ... OK 
++ Check lb-align-01               ... OK 
++ Check lbu-align-01              ... OK 
++ Check ld-align-01               ... OK 
++ Check lh-align-01               ... OK 
++ Check lhu-align-01              ... OK 
++ Check lui-01                    ... OK 
++ Check lw-align-01               ... OK 
++ Check lwu-align-01              ... OK 
++ Check or-01                     ... OK 
++ Check ori-01                    ... OK 
++ Check sb-align-01               ... OK 
++ Check sd-align-01               ... OK 
++ Check sh-align-01               ... OK 
++ Check sll-01                    ... OK 
++ Check slli-01                   ... OK 
++ Check slliw-01                  ... OK 
++ Check sllw-01                   ... OK 
++ Check slt-01                    ... OK 
++ Check slti-01                   ... OK 
++ Check sltiu-01                  ... OK 
++ Check sltu-01                   ... OK 
++ Check sra-01                    ... OK 
++ Check srai-01                   ... OK 
++ Check sraiw-01                  ... OK 
++ Check sraw-01                   ... OK 
++ Check srl-01                    ... OK 
++ Check srli-01                   ... OK 
++ Check srliw-01                  ... OK 
++ Check srlw-01                   ... OK 
++ Check sub-01                    ... OK 
++ Check subw-01                   ... OK 
++ Check sw-align-01               ... OK 
++ Check xor-01                    ... OK 
++ Check xori-01                   ... OK 
+
+#### C Extension
++ Check cadd-01                   ... OK 
++ Check caddi-01                  ... OK 
++ Check caddi16sp-01              ... OK 
++ Check caddi4spn-01              ... OK 
++ Check caddiw-01                 ... OK 
++ Check caddw-01                  ... OK 
++ Check cand-01                   ... OK 
++ Check candi-01                  ... OK 
++ Check cbeqz-01                  ... OK 
++ Check cbnez-01                  ... OK 
++ Check cebreak-01                ... FAIL 
++ Check cj-01                     ... OK 
++ Check cjalr-01                  ... OK 
++ Check cjr-01                    ... OK 
++ Check cld-01                    ... OK 
++ Check cldsp-01                  ... OK 
++ Check cli-01                    ... OK 
++ Check clui-01                   ... OK 
++ Check clw-01                    ... OK 
++ Check clwsp-01                  ... OK 
++ Check cmv-01                    ... OK 
++ Check cnop-01                   ... OK 
++ Check cor-01                    ... OK 
++ Check csd-01                    ... OK 
++ Check csdsp-01                  ... OK 
++ Check cslli-01                  ... OK 
++ Check csrai-01                  ... OK 
++ Check csrli-01                  ... OK 
++ Check csub-01                   ... OK 
++ Check csubw-01                  ... OK 
++ Check csw-01                    ... OK 
++ Check cswsp-01                  ... OK 
++ Check cxor-01                   ... OK 
+
+#### M Extension
++ Check div-01                    ... OK 
++ Check divu-01                   ... OK 
++ Check divuw-01                  ... OK 
++ Check divw-01                   ... OK 
++ Check mul-01                    ... OK 
++ Check mulh-01                   ... OK 
++ Check mulhsu-01                 ... OK 
++ Check mulhu-01                  ... OK 
++ Check mulw-01                   ... OK 
++ Check rem-01                    ... OK 
++ Check remu-01                   ... OK 
++ Check remuw-01                  ... OK 
++ Check remw-01                   ... OK 
+
+#### Privilege
++ Check ebreak                    ... FAIL 
++ Check ecall                     ... FAIL 
++ Check misalign1-jalr-01         ... OK 
++ Check misalign2-jalr-01         ... FAIL 
++ Check misalign-beq-01           ... OK 
++ Check misalign-bge-01           ... OK 
++ Check misalign-bgeu-01          ... OK 
++ Check misalign-blt-01           ... OK 
++ Check misalign-bltu-01          ... OK 
++ Check misalign-bne-01           ... OK 
++ Check misalign-jal-01           ... OK 
++ Check misalign-ld-01            ... FAIL 
++ Check misalign-lh-01            ... FAIL 
++ Check misalign-lhu-01           ... FAIL 
++ Check misalign-lw-01            ... FAIL 
++ Check misalign-lwu-01           ... FAIL 
++ Check misalign-sd-01            ... FAIL 
++ Check misalign-sh-01            ... FAIL 
++ Check misalign-sw-01            ... FAIL 
+
+#### Zfencei
++ Check Fencei                    ... OK 
+
+
+### RV32
+
+#### I Extension
++ Check add-01                    ... OK 
++ Check addi-01                   ... OK 
++ Check and-01                    ... OK 
++ Check andi-01                   ... OK 
++ Check auipc-01                  ... OK 
++ Check beq-01                    ... OK 
++ Check bge-01                    ... OK 
++ Check bgeu-01                   ... OK 
++ Check blt-01                    ... OK 
++ Check bltu-01                   ... OK 
++ Check bne-01                    ... OK 
++ Check fence-01                  ... OK 
++ Check jal-01                    ... OK 
++ Check jalr-01                   ... OK 
++ Check lb-align-01               ... OK 
++ Check lbu-align-01              ... OK 
++ Check lh-align-01               ... OK 
++ Check lhu-align-01              ... OK 
++ Check lui-01                    ... OK 
++ Check lw-align-01               ... OK 
++ Check or-01                     ... OK 
++ Check ori-01                    ... OK 
++ Check sb-align-01               ... OK 
++ Check sh-align-01               ... OK 
++ Check sll-01                    ... OK 
++ Check slli-01                   ... OK 
++ Check slt-01                    ... OK 
++ Check slti-01                   ... OK 
++ Check sltiu-01                  ... OK 
++ Check sltu-01                   ... OK 
++ Check sra-01                    ... OK 
++ Check srai-01                   ... OK 
++ Check srl-01                    ... OK 
++ Check srli-01                   ... OK 
++ Check sub-01                    ... OK 
++ Check sw-align-01               ... OK 
++ Check xor-01                    ... OK 
++ Check xori-01                   ... OK 
+
+
+#### C Extension
++ Check cadd-01                   ... OK 
++ Check caddi-01                  ... OK 
++ Check caddi16sp-01              ... OK 
++ Check caddi4spn-01              ... OK 
++ Check cand-01                   ... OK 
++ Check candi-01                  ... OK 
++ Check cbeqz-01                  ... OK 
++ Check cbnez-01                  ... OK 
++ Check cebreak-01                ... FAIL 
++ Check cj-01                     ... OK 
++ Check cjal-01                   ... OK 
++ Check cjalr-01                  ... OK 
++ Check cjr-01                    ... OK 
++ Check cli-01                    ... OK 
++ Check clui-01                   ... OK 
++ Check clw-01                    ... OK 
++ Check clwsp-01                  ... OK 
++ Check cmv-01                    ... OK 
++ Check cnop-01                   ... OK 
++ Check cor-01                    ... OK 
++ Check cslli-01                  ... OK 
++ Check csrai-01                  ... OK 
++ Check csrli-01                  ... OK 
++ Check csub-01                   ... OK 
++ Check csw-01                    ... OK 
++ Check cswsp-01                  ... OK 
++ Check cxor-01                   ... OK 
+
+#### M Extension
++ Check div-01                    ... OK 
++ Check divu-01                   ... OK 
++ Check mul-01                    ... OK 
++ Check mulh-01                   ... OK 
++ Check mulhsu-01                 ... OK 
++ Check mulhu-01                  ... OK 
++ Check rem-01                    ... OK 
++ Check remu-01                   ... OK 
+
+#### Privilage
++ Check ebreak                    ... FAIL 
++ Check ecall                     ... FAIL 
++ Check misalign1-jalr-01         ... OK 
++ Check misalign2-jalr-01         ... FAIL 
++ Check misalign-beq-01           ... OK 
++ Check misalign-bge-01           ... OK 
++ Check misalign-bgeu-01          ... OK 
++ Check misalign-blt-01           ... OK 
++ Check misalign-bltu-01          ... OK 
++ Check misalign-bne-01           ... OK 
++ Check misalign-jal-01           ... OK 
++ Check misalign-lh-01            ... FAIL 
++ Check misalign-lhu-01           ... FAIL 
++ Check misalign-lw-01            ... FAIL 
++ Check misalign-sh-01            ... FAIL 
++ Check misalign-sw-01            ... FAIL 
+
+### Zifencei Extension
++ Check Fencei                    ... OK 
+

doc/riscv-arch-test/RISCV_TLM/device/rv32i_m/C/Makefile.include

@@ -0,0 +1,37 @@
+TARGET_SIM   ?= /home/marius/Work/RISC-V/RISC-V-TLM/RISCV_TLM
+TARGET_FLAGS ?= $(RISCV_TARGET_FLAGS)
+ifeq ($(shell command -v $(TARGET_SIM) 2> /dev/null),)
+    $(error Target simulator executable '$(TARGET_SIM)` not found)
+endif
+
+START_ADDRES := $(shell readelf -s $(<) | grep "begin_signature" | awk '{print "0x"$2  }')
+END_ADDRES := $(shell readelf -s $(<) | grep "end_signature" | awk '{print "0x"$2  }')
+
+RUN_TARGET=\
+    $(TARGET_SIM) $(TARGET_FLAGS) \
+         -B `readelf -s $(<) | grep "begin_signature" | awk '{print "0x"$$2  }'`\
+         -E `readelf -s $(<) | grep "end_signature" | awk '{print "0x"$$2  }'` -T \
+         $(<).hex ;\
+	 mv *output $(work_dir_isa)/
+
+RISCV_PREFIX   ?= riscv32-unknown-elf-
+RISCV_GCC      ?= $(RISCV_PREFIX)gcc
+RISCV_OBJDUMP  ?= $(RISCV_PREFIX)objdump
+RISCV_GCC_OPTS ?= -g -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles $(RVTEST_DEFINES)
+
+COMPILE_CMD = $$(RISCV_GCC) $(1) $$(RISCV_GCC_OPTS) \
+							-I$(ROOTDIR)/riscv-test-suite/env/ \
+							-I$(TARGETDIR)/$(RISCV_TARGET)/ \
+							-T$(TARGETDIR)/$(RISCV_TARGET)/link.ld \
+							$$(<) -o $$@ 
+		
+OBJ_CMD = $$(RISCV_OBJDUMP) $$@ -D > $$@.objdump; \
+					$$(RISCV_OBJDUMP) $$@ --source > $$@.debug
+					
+OBJ_HEX = riscv32-unknown-elf-objcopy -Oihex $$@ $$@.hex 
+
+COMPILE_TARGET=\
+			$(COMPILE_CMD); \
+			$(OBJ_CMD);\
+			$(OBJ_HEX)
+        

doc/riscv-arch-test/RISCV_TLM/device/rv32i_m/I/Makefile.include

@@ -0,0 +1,34 @@
+TARGET_SIM   ?= /home/marius/Work/RISC-V/RISC-V-TLM/RISCV_TLM
+TARGET_FLAGS ?= $(RISCV_TARGET_FLAGS)
+ifeq ($(shell command -v $(TARGET_SIM) 2> /dev/null),)
+    $(error Target simulator executable '$(TARGET_SIM)` not found)
+endif
+
+RUN_TARGET=\
+    $(TARGET_SIM) $(TARGET_FLAGS) \
+         -B `readelf -s $(<) | grep "begin_signature" | awk '{print "0x"$$2  }'`\
+         -E `readelf -s $(<) | grep "end_signature" | awk '{print "0x"$$2  }'` -T \
+         $(<).hex ;\
+	 mv *output $(work_dir_isa)/
+
+RISCV_PREFIX   ?= riscv32-unknown-elf-
+RISCV_GCC      ?= $(RISCV_PREFIX)gcc
+RISCV_OBJDUMP  ?= $(RISCV_PREFIX)objdump
+RISCV_GCC_OPTS ?= -g -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles $(RVTEST_DEFINES)
+
+COMPILE_CMD = $$(RISCV_GCC) $(1) $$(RISCV_GCC_OPTS) \
+							-I$(ROOTDIR)/riscv-test-suite/env/ \
+							-I$(TARGETDIR)/$(RISCV_TARGET)/ \
+							-T$(TARGETDIR)/$(RISCV_TARGET)/link.ld \
+							$$(<) -o $$@ 
+		
+OBJ_CMD = $$(RISCV_OBJDUMP) $$@ -D > $$@.objdump; \
+					$$(RISCV_OBJDUMP) $$@ --source > $$@.debug
+					
+OBJ_HEX = riscv32-unknown-elf-objcopy -Oihex $$@ $$@.hex 
+
+COMPILE_TARGET=\
+			$(COMPILE_CMD); \
+			$(OBJ_CMD);\
+			$(OBJ_HEX)
+        

doc/riscv-arch-test/RISCV_TLM/device/rv32i_m/M/Makefile.include

@@ -0,0 +1,37 @@
+TARGET_SIM   ?= /home/marius/Work/RISC-V/RISC-V-TLM/RISCV_TLM
+TARGET_FLAGS ?= $(RISCV_TARGET_FLAGS)
+ifeq ($(shell command -v $(TARGET_SIM) 2> /dev/null),)
+    $(error Target simulator executable '$(TARGET_SIM)` not found)
+endif
+
+START_ADDRES := $(shell readelf -s $(<) | grep "begin_signature" | awk '{print "0x"$2  }')
+END_ADDRES := $(shell readelf -s $(<) | grep "end_signature" | awk '{print "0x"$2  }')
+
+RUN_TARGET=\
+    $(TARGET_SIM) $(TARGET_FLAGS) \
+         -B `readelf -s $(<) | grep "begin_signature" | awk '{print "0x"$$2  }'`\
+         -E `readelf -s $(<) | grep "end_signature" | awk '{print "0x"$$2  }'` -T \
+         $(<).hex ;\
+	 mv *output $(work_dir_isa)/
+
+RISCV_PREFIX   ?= riscv32-unknown-elf-
+RISCV_GCC      ?= $(RISCV_PREFIX)gcc
+RISCV_OBJDUMP  ?= $(RISCV_PREFIX)objdump
+RISCV_GCC_OPTS ?= -g -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles $(RVTEST_DEFINES)
+
+COMPILE_CMD = $$(RISCV_GCC) $(1) $$(RISCV_GCC_OPTS) \
+							-I$(ROOTDIR)/riscv-test-suite/env/ \
+							-I$(TARGETDIR)/$(RISCV_TARGET)/ \
+							-T$(TARGETDIR)/$(RISCV_TARGET)/link.ld \
+							$$(<) -o $$@ 
+		
+OBJ_CMD = $$(RISCV_OBJDUMP) $$@ -D > $$@.objdump; \
+					$$(RISCV_OBJDUMP) $$@ --source > $$@.debug
+					
+OBJ_HEX = riscv32-unknown-elf-objcopy -Oihex $$@ $$@.hex 
+
+COMPILE_TARGET=\
+			$(COMPILE_CMD); \
+			$(OBJ_CMD);\
+			$(OBJ_HEX)
+        

doc/riscv-arch-test/RISCV_TLM/device/rv32i_m/Zifencei/Makefile.include

@@ -0,0 +1,37 @@
+TARGET_SIM   ?= /home/marius/Work/RISC-V/RISC-V-TLM/RISCV_TLM
+TARGET_FLAGS ?= $(RISCV_TARGET_FLAGS)
+ifeq ($(shell command -v $(TARGET_SIM) 2> /dev/null),)
+    $(error Target simulator executable '$(TARGET_SIM)` not found)
+endif
+
+START_ADDRES := $(shell readelf -s $(<) | grep "begin_signature" | awk '{print "0x"$2  }')
+END_ADDRES := $(shell readelf -s $(<) | grep "end_signature" | awk '{print "0x"$2  }')
+
+RUN_TARGET=\
+    $(TARGET_SIM) $(TARGET_FLAGS) \
+         -B `readelf -s $(<) | grep "begin_signature" | awk '{print "0x"$$2  }'`\
+         -E `readelf -s $(<) | grep "end_signature" | awk '{print "0x"$$2  }'` -T \
+         $(<).hex ;\
+	 mv *output $(work_dir_isa)/
+
+RISCV_PREFIX   ?= riscv32-unknown-elf-
+RISCV_GCC      ?= $(RISCV_PREFIX)gcc
+RISCV_OBJDUMP  ?= $(RISCV_PREFIX)objdump
+RISCV_GCC_OPTS ?= -g -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles $(RVTEST_DEFINES)
+
+COMPILE_CMD = $$(RISCV_GCC) $(1) $$(RISCV_GCC_OPTS) \
+							-I$(ROOTDIR)/riscv-test-suite/env/ \
+							-I$(TARGETDIR)/$(RISCV_TARGET)/ \
+							-T$(TARGETDIR)/$(RISCV_TARGET)/link.ld \
+							$$(<) -o $$@ 
+		
+OBJ_CMD = $$(RISCV_OBJDUMP) $$@ -D > $$@.objdump; \
+					$$(RISCV_OBJDUMP) $$@ --source > $$@.debug
+					
+OBJ_HEX = riscv32-unknown-elf-objcopy -Oihex $$@ $$@.hex 
+
+COMPILE_TARGET=\
+			$(COMPILE_CMD); \
+			$(OBJ_CMD);\
+			$(OBJ_HEX)
+        

doc/riscv-arch-test/RISCV_TLM/device/rv32i_m/privilege/Makefile.include

@@ -0,0 +1,37 @@
+TARGET_SIM   ?= /home/marius/Work/RISC-V/RISC-V-TLM/RISCV_TLM
+TARGET_FLAGS ?= $(RISCV_TARGET_FLAGS)
+ifeq ($(shell command -v $(TARGET_SIM) 2> /dev/null),)
+    $(error Target simulator executable '$(TARGET_SIM)` not found)
+endif
+
+START_ADDRES := $(shell readelf -s $(<) | grep "begin_signature" | awk '{print "0x"$2  }')
+END_ADDRES := $(shell readelf -s $(<) | grep "end_signature" | awk '{print "0x"$2  }')
+
+RUN_TARGET=\
+    $(TARGET_SIM) $(TARGET_FLAGS) \
+         -B `readelf -s $(<) | grep "begin_signature" | awk '{print "0x"$$2  }'`\
+         -E `readelf -s $(<) | grep "end_signature" | awk '{print "0x"$$2  }'` -T \
+         $(<).hex ;\
+	 mv *output $(work_dir_isa)/
+
+RISCV_PREFIX   ?= riscv32-unknown-elf-
+RISCV_GCC      ?= $(RISCV_PREFIX)gcc
+RISCV_OBJDUMP  ?= $(RISCV_PREFIX)objdump
+RISCV_GCC_OPTS ?= -g -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles $(RVTEST_DEFINES)
+
+COMPILE_CMD = $$(RISCV_GCC) $(1) $$(RISCV_GCC_OPTS) \
+							-I$(ROOTDIR)/riscv-test-suite/env/ \
+							-I$(TARGETDIR)/$(RISCV_TARGET)/ \
+							-T$(TARGETDIR)/$(RISCV_TARGET)/link.ld \
+							$$(<) -o $$@ 
+		
+OBJ_CMD = $$(RISCV_OBJDUMP) $$@ -D > $$@.objdump; \
+					$$(RISCV_OBJDUMP) $$@ --source > $$@.debug
+					
+OBJ_HEX = riscv32-unknown-elf-objcopy -Oihex $$@ $$@.hex 
+
+COMPILE_TARGET=\
+			$(COMPILE_CMD); \
+			$(OBJ_CMD);\
+			$(OBJ_HEX)
+        

doc/riscv-arch-test/RISCV_TLM/device/rv64i_m/C/Makefile.include

@@ -0,0 +1,35 @@
+TARGET_SIM   ?= /home/marius/Work/RISC-V/RISC-V-TLM/RISCV_TLM
+TARGET_FLAGS ?= $(RISCV_TARGET_FLAGS)
+ifeq ($(shell command -v $(TARGET_SIM) 2> /dev/null),)
+    $(error Target simulator executable '$(TARGET_SIM)` not found)
+endif
+
+START_ADDRES := $(shell readelf -s $(<) | grep "begin_signature" | awk '{print "0x"$2  }')
+END_ADDRES := $(shell readelf -s $(<) | grep "end_signature" | awk '{print "0x"$2  }')
+
+RUN_TARGET=\
+    $(TARGET_SIM) $(TARGET_FLAGS) -R64 -T \
+         $(<).hex ;\
+	 mv *output $(work_dir_isa)/
+
+RISCV_PREFIX   ?= riscv64-unknown-elf-
+RISCV_GCC      ?= $(RISCV_PREFIX)gcc
+RISCV_OBJDUMP  ?= $(RISCV_PREFIX)objdump
+RISCV_GCC_OPTS ?= -g -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles $(RVTEST_DEFINES)
+
+COMPILE_CMD = $$(RISCV_GCC) $(1) $$(RISCV_GCC_OPTS) \
+							-I$(ROOTDIR)/riscv-test-suite/env/ \
+							-I$(TARGETDIR)/$(RISCV_TARGET)/ \
+							-T$(TARGETDIR)/$(RISCV_TARGET)/link.ld \
+							$$(<) -o $$@ 
+		
+OBJ_CMD = $$(RISCV_OBJDUMP) $$@ -D > $$@.objdump; \
+					$$(RISCV_OBJDUMP) $$@ --source > $$@.debug
+					
+OBJ_HEX = riscv64-unknown-elf-objcopy -Oihex $$@ $$@.hex 
+
+COMPILE_TARGET=\
+			$(COMPILE_CMD); \
+			$(OBJ_CMD);\
+			$(OBJ_HEX)
+        

doc/riscv-arch-test/RISCV_TLM/device/rv64i_m/I/Makefile.include

@@ -0,0 +1,34 @@
+TARGET_SIM   ?= /home/marius/Work/RISC-V/RISC-V-TLM/RISCV_TLM
+TARGET_FLAGS ?= $(RISCV_TARGET_FLAGS)
+ifeq ($(shell command -v $(TARGET_SIM) 2> /dev/null),)
+    $(error Target simulator executable '$(TARGET_SIM)` not found)
+endif
+
+RUN_TARGET=\
+    $(TARGET_SIM) $(TARGET_FLAGS) -R64 -T \
+         $(<).hex ;\
+	 mv *output $(work_dir_isa)/
+
+RISCV_PREFIX   ?= riscv64-unknown-elf-
+RISCV_GCC      ?= $(RISCV_PREFIX)gcc
+RISCV_OBJDUMP  ?= $(RISCV_PREFIX)objdump
+RISCV_GCC_OPTS ?= -g -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles $(RVTEST_DEFINES) 
+
+COMPILE_CMD = $$(RISCV_GCC) $(1) $$(RISCV_GCC_OPTS) \
+							-I$(ROOTDIR)/riscv-test-suite/env/ \
+							-I$(TARGETDIR)/$(RISCV_TARGET)/ \
+							-T$(TARGETDIR)/$(RISCV_TARGET)/link.ld \
+							$$(<) -o $$@ 
+							
+							
+		
+OBJ_CMD = $$(RISCV_OBJDUMP) $$@ -D > $$@.objdump; \
+					$$(RISCV_OBJDUMP) $$@ --source > $$@.debug
+					
+OBJ_HEX = riscv64-unknown-elf-objcopy -Oihex $$@ $$@.hex 
+
+COMPILE_TARGET=\
+			$(COMPILE_CMD); \
+			$(OBJ_CMD);\
+			$(OBJ_HEX)
+        

doc/riscv-arch-test/RISCV_TLM/device/rv64i_m/M/Makefile.include

@@ -0,0 +1,35 @@
+TARGET_SIM   ?= /home/marius/Work/RISC-V/RISC-V-TLM/RISCV_TLM
+TARGET_FLAGS ?= $(RISCV_TARGET_FLAGS)
+ifeq ($(shell command -v $(TARGET_SIM) 2> /dev/null),)
+    $(error Target simulator executable '$(TARGET_SIM)` not found)
+endif
+
+START_ADDRES := $(shell readelf -s $(<) | grep "begin_signature" | awk '{print "0x"$2  }')
+END_ADDRES := $(shell readelf -s $(<) | grep "end_signature" | awk '{print "0x"$2  }')
+
+RUN_TARGET=\
+    $(TARGET_SIM) $(TARGET_FLAGS) -R64 -T \
+         $(<).hex ;\
+	 mv *output $(work_dir_isa)/
+
+RISCV_PREFIX   ?= riscv64-unknown-elf-
+RISCV_GCC      ?= $(RISCV_PREFIX)gcc
+RISCV_OBJDUMP  ?= $(RISCV_PREFIX)objdump
+RISCV_GCC_OPTS ?= -g -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles $(RVTEST_DEFINES)
+
+COMPILE_CMD = $$(RISCV_GCC) $(1) $$(RISCV_GCC_OPTS) \
+							-I$(ROOTDIR)/riscv-test-suite/env/ \
+							-I$(TARGETDIR)/$(RISCV_TARGET)/ \
+							-T$(TARGETDIR)/$(RISCV_TARGET)/link.ld \
+							$$(<) -o $$@ 
+		
+OBJ_CMD = $$(RISCV_OBJDUMP) $$@ -D > $$@.objdump; \
+					$$(RISCV_OBJDUMP) $$@ --source > $$@.debug
+					
+OBJ_HEX = riscv64-unknown-elf-objcopy -Oihex $$@ $$@.hex 
+
+COMPILE_TARGET=\
+			$(COMPILE_CMD); \
+			$(OBJ_CMD);\
+			$(OBJ_HEX)
+        

doc/riscv-arch-test/RISCV_TLM/device/rv64i_m/Zifencei/Makefile.include

@@ -0,0 +1,34 @@
+TARGET_SIM   ?= /home/marius/Work/RISC-V/RISC-V-TLM/RISCV_TLM
+TARGET_FLAGS ?= $(RISCV_TARGET_FLAGS)
+ifeq ($(shell command -v $(TARGET_SIM) 2> /dev/null),)
+    $(error Target simulator executable '$(TARGET_SIM)` not found)
+endif
+
+RUN_TARGET=\
+    $(TARGET_SIM) $(TARGET_FLAGS) -R64 -T \
+         $(<).hex ;\
+	 mv *output $(work_dir_isa)/
+
+RISCV_PREFIX   ?= riscv64-unknown-elf-
+RISCV_GCC      ?= $(RISCV_PREFIX)gcc
+RISCV_OBJDUMP  ?= $(RISCV_PREFIX)objdump
+RISCV_GCC_OPTS ?= -g -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles $(RVTEST_DEFINES) 
+
+COMPILE_CMD = $$(RISCV_GCC) $(1) $$(RISCV_GCC_OPTS) \
+							-I$(ROOTDIR)/riscv-test-suite/env/ \
+							-I$(TARGETDIR)/$(RISCV_TARGET)/ \
+							-T$(TARGETDIR)/$(RISCV_TARGET)/link.ld \
+							$$(<) -o $$@ 
+							
+							
+		
+OBJ_CMD = $$(RISCV_OBJDUMP) $$@ -D > $$@.objdump; \
+					$$(RISCV_OBJDUMP) $$@ --source > $$@.debug
+					
+OBJ_HEX = riscv64-unknown-elf-objcopy -Oihex $$@ $$@.hex 
+
+COMPILE_TARGET=\
+			$(COMPILE_CMD); \
+			$(OBJ_CMD);\
+			$(OBJ_HEX)
+        

doc/riscv-arch-test/RISCV_TLM/device/rv64i_m/privilege/Makefile.include

@@ -0,0 +1,34 @@
+TARGET_SIM   ?= /home/marius/Work/RISC-V/RISC-V-TLM/RISCV_TLM
+TARGET_FLAGS ?= $(RISCV_TARGET_FLAGS)
+ifeq ($(shell command -v $(TARGET_SIM) 2> /dev/null),)
+    $(error Target simulator executable '$(TARGET_SIM)` not found)
+endif
+
+RUN_TARGET=\
+    $(TARGET_SIM) $(TARGET_FLAGS) -R64 -T \
+         $(<).hex ;\
+	 mv *output $(work_dir_isa)/
+
+RISCV_PREFIX   ?= riscv64-unknown-elf-
+RISCV_GCC      ?= $(RISCV_PREFIX)gcc
+RISCV_OBJDUMP  ?= $(RISCV_PREFIX)objdump
+RISCV_GCC_OPTS ?= -g -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles $(RVTEST_DEFINES) 
+
+COMPILE_CMD = $$(RISCV_GCC) $(1) $$(RISCV_GCC_OPTS) \
+							-I$(ROOTDIR)/riscv-test-suite/env/ \
+							-I$(TARGETDIR)/$(RISCV_TARGET)/ \
+							-T$(TARGETDIR)/$(RISCV_TARGET)/link.ld \
+							$$(<) -o $$@ 
+							
+							
+		
+OBJ_CMD = $$(RISCV_OBJDUMP) $$@ -D > $$@.objdump; \
+					$$(RISCV_OBJDUMP) $$@ --source > $$@.debug
+					
+OBJ_HEX = riscv64-unknown-elf-objcopy -Oihex $$@ $$@.hex 
+
+COMPILE_TARGET=\
+			$(COMPILE_CMD); \
+			$(OBJ_CMD);\
+			$(OBJ_HEX)
+        

doc/riscv-arch-test/RISCV_TLM/link.ld

@@ -0,0 +1,18 @@
+OUTPUT_ARCH( "riscv" )
+ENTRY(rvtest_entry_point)
+
+SECTIONS
+{
+  . = 0x00000000;
+  .text.init : { *(.text.init) }
+  . = ALIGN(0x1000);
+/*  .tohost : { *(.tohost) } */
+  . = ALIGN(0x1000);
+  .text : { *(.text) }
+  . = ALIGN(0x1000);
+  .data : { *(.data) }
+  .data.string : { *(.data.string)}
+  .bss : { *(.bss) }
+  _end = .;
+}
+

doc/riscv-arch-test/RISCV_TLM/model_test.h

@@ -0,0 +1,349 @@
+#ifndef _COMPLIANCE_MODEL_H
+#define _COMPLIANCE_MODEL_H
+
+#define TESTNUM gp
+
+#if XLEN == 64
+  #define ALIGNMENT 3
+#else
+  #define ALIGNMENT 2
+#endif
+
+//RV_COMPLIANCE_HALT
+
+#define RVMODEL_HALT    \
+	 la t0, begin_signature; \
+	 la t1, end_signature; \
+     fence; \
+     ecall
+
+#define RVMODEL_BOOT \
+        .align  6;                                                      \
+        .weak stvec_handler;                                            \
+        .weak mtvec_handler;                                            \
+        /* reset vector */                                              \
+        j reset_vector;                                                 \
+        .align 2;                                                       \
+trap_vector:                                                            \
+        /* test whether the test came from pass/fail */                 \
+        csrr t5, mcause;                                                \
+        li t6, CAUSE_USER_ECALL;                                        \
+        beq t5, t6, write_tohost;                                       \
+        li t6, CAUSE_SUPERVISOR_ECALL;                                  \
+        beq t5, t6, write_tohost;                                       \
+        li t6, CAUSE_MACHINE_ECALL;                                     \
+        beq t5, t6, write_tohost;                                       \
+        /* if an mtvec_handler is defined, jump to it */                \
+        la t5, mtvec_handler;                                           \
+        beqz t5, 1f;                                                    \
+        jr t5;                                                          \
+        /* was it an interrupt or an exception? */                      \
+  1:    csrr t5, mcause;                                                \
+        bgez t5, handle_exception;                                      \
+handle_exception:                                                       \
+        /* we don't know how to handle whatever the exception was */    \
+  other_exception:                                                      \
+        /* some unhandlable exception occurred */                       \
+  1:    ori gp, gp, 1337;                                     \
+  write_tohost:                                                         \
+        sw gp, tohost, t5;                                         \
+        j write_tohost;                                                 \
+reset_vector:                                                           \
+        li a0, MSTATUS_MPP;                                                   \
+        csrs mstatus, a0;                                                     \
+        la t0, trap_vector;                                             \
+        csrw mtvec, t0;                                                 \
+        la t0, rvtest_init;                                                  \
+        csrw mepc, t0;                                                  \
+        csrr a0, mhartid;                                               \
+        mret;                                                           \
+1:                                                                      \
+    
+//RV_COMPLIANCE_DATA_BEGIN
+#define RVMODEL_DATA_BEGIN                                              \
+  .align 4; .global begin_signature; begin_signature:
+
+//RV_COMPLIANCE_DATA_END
+#define RVMODEL_DATA_END                                                      \
+  .align 4; .global end_signature; end_signature:  \
+  .pushsection .tohost,"aw",@progbits;                            \
+  .align 8; .global tohost; tohost: .dword 0;                     \
+  .align 8; .global fromhost; fromhost: .dword 0;                 \
+  .popsection;                                                    \
+  .align 8; .global begin_regstate; begin_regstate:               \
+  .word 128;                                                      \
+  .align 8; .global end_regstate; end_regstate:                   \
+  .word 4;                                                        \
+  .align ALIGNMENT;\
+
+#define RVMODEL_IO_INIT
+
+#define RVMODEL_SET_MSW_INT       
+
+
+#define RVMODEL_CLEAR_MSW_INT
+
+#define RVMODEL_CLEAR_MTIMER_INT
+
+#define RVMODEL_CLEAR_MEXT_INT
+
+#endif // _COMPLIANCE_MODEL_H
+
+// RISC-V Compliance IO Test Header File
+
+/*
+ * Copyright (c) 2005-2018 Imperas Software Ltd., www.imperas.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied.
+ *
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+
+//
+// In general the following registers are reserved
+// ra, a0, t0, t1
+// x1, x10 x5, x6
+// new reserve x31
+//
+
+#ifndef _COMPLIANCE_IO_H
+#define _COMPLIANCE_IO_H
+
+
+#ifndef  RVMODEL_ASSERT
+#  define RVMODEL_IO_QUIET
+#endif
+
+//-----------------------------------------------------------------------
+// RV IO Macros (Character transfer by custom instruction)
+//-----------------------------------------------------------------------
+#define STRINGIFY(x) #x
+#define TOSTRING(x)  STRINGIFY(x)
+
+#define RVTEST_CUSTOM1 0x40000000
+
+#ifdef RVMODEL_IO_QUIET
+
+#define RVMODEL_IO_INIT
+#define RVMODEL_IO_WRITE_STR(_SP, _STR)
+#define RVMODEL_IO_CHECK()
+#define RVMODEL_IO_ASSERT_GPR_EQ(_SP, _R, _I)
+#define RVMODEL_IO_ASSERT_SFPR_EQ(_F, _R, _I)
+#define RVMODEL_IO_ASSERT_DFPR_EQ(_D, _R, _I)
+
+#else
+
+#define RVMODEL_IO_INIT
+
+#if (__riscv_xlen==32)
+#    define RSIZE 4
+#    define SX sw
+#    define LX lw
+#endif
+#if (__riscv_xlen==64)
+#    define RSIZE 8
+#    define SX sd
+#    define LX ld
+#endif
+
+// _SP = (volatile register)
+#define LOCAL_IO_PUSH(_SP)                                              \
+    la      _SP,  begin_regstate;                                       \
+    SX      x1,   (1*RSIZE)(_SP);                                       \
+    SX      x5,   (5*RSIZE)(_SP);                                       \
+    SX      x6,   (6*RSIZE)(_SP);                                       \
+    SX      x8,   (8*RSIZE)(_SP);                                       \
+    SX      x10,  (10*RSIZE)(_SP);
+
+// _SP = (volatile register)
+#define LOCAL_IO_POP(_SP)                                               \
+    la      _SP,   begin_regstate;                                      \
+    LX      x1,   (1*RSIZE)(_SP);                                       \
+    LX      x5,   (5*RSIZE)(_SP);                                       \
+    LX      x6,   (6*RSIZE)(_SP);                                       \
+    LX      x8,   (8*RSIZE)(_SP);                                       \
+    LX      x10,  (10*RSIZE)(_SP);
+
+#define LOCAL_IO_WRITE_GPR(_R)                                          \
+    mv          a0, _R;                                                 \
+    la          t0, FN_WriteA0;                                         \
+    jalr         t0;
+
+#define LOCAL_IO_WRITE_FPR(_F)                                          \
+    fmv.x.s     a0, _F;                                                 \
+    jal         FN_WriteA0;
+
+#define LOCAL_IO_WRITE_DFPR(_V1, _V2)                                   \
+    mv          a0, _V1;                                                \
+    jal         FN_WriteA0; \
+    mv          a0, _V2; \
+    jal         FN_WriteA0; \
+
+#define LOCAL_IO_PUTC(_R)                                               \
+    la          t3, RVTEST_CUSTOM1;                                     \
+    sw          _R, (0)(t3);   
+
+
+// Assertion violation: file file.c, line 1234: (expr)
+// _SP = (volatile register)
+// _R = GPR
+// _I = Immediate
+#define RVMODEL_IO_ASSERT_GPR_EQ(_SP, _R, _I)                            \
+    LOCAL_IO_PUSH(_SP)                                                  \
+    mv          s0, _R;                                                 \
+    li          t0, _I;                                                 \
+    beq         s0, t0, 20002f;                                         \
+    LOCAL_IO_WRITE_STR("Assertion violation: file ");                   \
+    LOCAL_IO_WRITE_STR(__FILE__);                                       \
+    LOCAL_IO_WRITE_STR(", line ");                                      \
+    LOCAL_IO_WRITE_STR(TOSTRING(__LINE__));                             \
+    LOCAL_IO_WRITE_STR(": ");                                           \
+    LOCAL_IO_WRITE_STR(# _R);                                           \
+    LOCAL_IO_WRITE_STR("(");                                            \
+    LOCAL_IO_WRITE_GPR(s0);                                             \
+    LOCAL_IO_WRITE_STR(") != ");                                        \
+    LOCAL_IO_WRITE_STR(# _I);                                           \
+    LOCAL_IO_WRITE_STR("\n");                                           \
+    li TESTNUM, 100;                                                    \
+    j rvtest_code_end;                                                        \
+20002:                                                                  \
+    LOCAL_IO_POP(_SP)
+
+
+// _F = FPR
+// _C = GPR
+// _I = Immediate
+#define RVMODEL_IO_ASSERT_SFPR_EQ(_F, _C, _I)                            \
+    fmv.x.s     t0, _F;                                                 \
+    beq         _C, t0, 20003f;                                         \
+    LOCAL_IO_WRITE_STR("Assertion violation: file ");                   \
+    LOCAL_IO_WRITE_STR(__FILE__);                                       \
+    LOCAL_IO_WRITE_STR(", line ");                                      \
+    LOCAL_IO_WRITE_STR(TOSTRING(__LINE__));                             \
+    LOCAL_IO_WRITE_STR(": ");                                           \
+    LOCAL_IO_WRITE_STR(# _F);                                           \
+    LOCAL_IO_WRITE_STR("(");                                            \
+    LOCAL_IO_WRITE_FPR(_F);                                             \
+    LOCAL_IO_WRITE_STR(") != ");                                        \
+    LOCAL_IO_WRITE_STR(# _I);                                           \
+    LOCAL_IO_WRITE_STR("\n");                                           \
+    li TESTNUM, 100;                                                    \
+    j rvtest_code_end;                                                        \
+20003:
+
+// _D = DFPR
+// _R = GPR
+// _I = Immediate
+#define RVMODEL_IO_ASSERT_DFPR_EQ(_D, _R, _I)                            \
+    fmv.x.d     t0, _D;                                                 \
+    beq         _R, t0, 20005f;                                         \
+    LOCAL_IO_WRITE_STR("Assertion violation: file ");                   \
+    LOCAL_IO_WRITE_STR(__FILE__);                                       \
+    LOCAL_IO_WRITE_STR(", line ");                                      \
+    LOCAL_IO_WRITE_STR(TOSTRING(__LINE__));                             \
+    LOCAL_IO_WRITE_STR(": ");                                           \
+    LOCAL_IO_WRITE_STR(# _D);                                           \
+    LOCAL_IO_WRITE_STR("(");                                            \
+    LOCAL_IO_WRITE_DFPR(_D);                                            \
+    LOCAL_IO_WRITE_STR(") != ");                                        \
+    LOCAL_IO_WRITE_STR(# _I);                                           \
+    LOCAL_IO_WRITE_STR("\n");                                           \
+    li TESTNUM, 100;                                                    \
+    j rvtest_code_end;                                                        \
+20005:
+
+// _SP = (volatile register)
+#define LOCAL_IO_WRITE_STR(_STR) RVMODEL_IO_WRITE_STR(x31, _STR)
+#define RVMODEL_IO_WRITE_STR(_SP, _STR)                                  \
+    LOCAL_IO_PUSH(_SP)                                                  \
+    .section .data.string;                                              \
+20001:                                                                  \
+    .string _STR;                                                       \
+    .section .text.init;                                                \
+    la a0, 20001b;                                                      \
+    la t0, FN_WriteStr;                                                \
+    jalr t0;                                                          \
+    LOCAL_IO_POP(_SP)
+
+// generate assertion listing
+#define LOCAL_CHECK() RVMODEL_IO_CHECK()
+#define RVMODEL_IO_CHECK()                                               \
+    li zero, -1;                                                        \
+
+//
+// FN_WriteStr: Uses a0, t0
+//
+FN_WriteStr:
+    mv          t0, a0;
+10000:
+    lbu         a0, (t0);
+    addi        t0, t0, 1;
+    beq         a0, zero, 10000f;
+    LOCAL_IO_PUTC(a0);
+    j           10000b;
+10000:
+    ret;
+
+//
+// FN_WriteA0: write register a0(x10) (destroys a0(x10), t0-t2(x5-x7))
+//
+FN_WriteA0:
+        mv          t0, a0
+        // determine architectural register width
+        li          a0, -1
+        srli        a0, a0, 31
+        srli        a0, a0, 1
+        bnez        a0, FN_WriteA0_64
+
+FN_WriteA0_32:
+        // reverse register when xlen is 32
+        li          t1, 8
+10000:  slli        t2, t2, 4
+        andi        a0, t0, 0xf
+        srli        t0, t0, 4
+        or          t2, t2, a0
+        addi        t1, t1, -1
+        bnez        t1, 10000b
+        li          t1, 8
+        j           FN_WriteA0_common
+
+FN_WriteA0_64:
+        // reverse register when xlen is 64
+        li          t1, 16
+10000:  slli        t2, t2, 4
+        andi        a0, t0, 0xf
+        srli        t0, t0, 4
+        or          t2, t2, a0
+        addi        t1, t1, -1
+        bnez        t1, 10000b
+        li          t1, 16
+
+FN_WriteA0_common:
+        // write reversed characters
+        li          t0, 10
+10000:  andi        a0, t2, 0xf
+        blt         a0, t0, 10001f
+        addi        a0, a0, 'a'-10
+        j           10002f
+10001:  addi        a0, a0, '0'
+10002:  LOCAL_IO_PUTC(a0)
+        srli        t2, t2, 4
+        addi        t1, t1, -1
+        bnez        t1, 10000b
+        ret
+
+#endif // RVMODEL_IO_QUIET
+
+#endif // _COMPLIANCE_IO_H

inc/A_extension.h

@@ -52,59 +52,468 @@ namespace riscv_tlm {
 /**
  * @brief Instruction decoding and fields access
  */
-    class A_extension : public extension_base {
+    template<typename T>
+    class A_extension : public extension_base<T> {
     public:
 
         /**
          * @brief Constructor, same as base class
          */
-        using extension_base::extension_base;
+        using extension_base<T>::extension_base;
+
+        using signed_T = typename std::make_signed<T>::type;
+        using unsigned_T = typename std::make_unsigned<T>::type;
 
         /**
          * @brief Access to opcode field
          * @return return opcode field
          */
-        inline int32_t opcode() const override {
+        inline unsigned_T opcode() const override {
-            return static_cast<int32_t>(m_instr.range(31, 27));
+            return static_cast<unsigned_T>(this->m_instr.range(31, 27));
         }
 
         /**
          * @brief Decodes opcode of instruction
          * @return opcode of instruction
          */
-        op_A_Codes decode() const;
+        op_A_Codes decode() const {
 
-        inline void dump() const override {
+            switch (opcode()) {
-            std::cout << std::hex << "0x" << m_instr << std::dec << std::endl;
+                case A_LR:
+                    return OP_A_LR;
+                    break;
+                case A_SC:
+                    return OP_A_SC;
+                    break;
+                case A_AMOSWAP:
+                    return OP_A_AMOSWAP;
+                    break;
+                case A_AMOADD:
+                    return OP_A_AMOADD;
+                    break;
+                case A_AMOXOR:
+                    return OP_A_AMOXOR;
+                    break;
+                case A_AMOAND:
+                    return OP_A_AMOAND;
+                    break;
+                case A_AMOOR:
+                    return OP_A_AMOOR;
+                    break;
+                case A_AMOMIN:
+                    return OP_A_AMOMIN;
+                    break;
+                case A_AMOMAX:
+                    return OP_A_AMOMAX;
+                    break;
+                case A_AMOMINU:
+                    return OP_A_AMOMINU;
+                    break;
+                case A_AMOMAXU:
+                    return OP_A_AMOMAXU;
+                    break;
+                    [[unlikely]] default:
+                    return OP_A_ERROR;
+                    break;
+
+            }
+
+            return OP_A_ERROR;
         }
 
-        bool Exec_A_LR();
+        inline void dump() const override {
+            std::cout << std::hex << "0x" << this->m_instr << std::dec << std::endl;
+        }
 
-        bool Exec_A_SC();
+        bool Exec_A_LR() {
+            std::uint32_t mem_addr = 0;
+            int rd, rs1, rs2;
+            std::uint32_t data;
 
-        bool Exec_A_AMOSWAP() const;
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
 
-        bool Exec_A_AMOADD() const;
+            if (rs2 != 0) {
+                std::cout << "ILEGAL INSTRUCTION, LR.W: rs2 != 0" << std::endl;
+                this->RaiseException(EXCEPTION_CAUSE_ILLEGAL_INSTRUCTION, this->m_instr);
 
-        bool Exec_A_AMOXOR() const;
+                return false;
+            }
 
-        bool Exec_A_AMOAND() const;
+            mem_addr = this->regs->getValue(rs1);
+            data = this->mem_intf->readDataMem(mem_addr, 4);
+            this->perf->dataMemoryRead();
+            this->regs->setValue(rd, static_cast<int32_t>(data));
 
-        bool Exec_A_AMOOR() const;
+            TLB_reserve(mem_addr);
 
-        bool Exec_A_AMOMIN() const;
+            this->logger->debug("{} ns. PC: 0x{:x}. A.LR.W: x{:d}(0x{:x}) -> x{:d}(0x{:x}) ",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                rs1, mem_addr, rd, data);
 
-        bool Exec_A_AMOMAX() const;
+            return true;
+        }
 
-        bool Exec_A_AMOMINU() const;
+        bool Exec_A_SC() {
+            std::uint32_t mem_addr;
+            int rd, rs1, rs2;
+            std::uint32_t data;
 
-        bool Exec_A_AMOMAXU() const;
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
 
-        bool process_instruction(Instruction &inst);
+            mem_addr = this->regs->getValue(rs1);
+            data = this->regs->getValue(rs2);
 
-        void TLB_reserve(std::uint32_t address);
+            if (TLB_reserved(mem_addr)) {
+                this->mem_intf->writeDataMem(mem_addr, data, 4);
+                this->perf->dataMemoryWrite();
+                this->regs->setValue(rd, 0);  // SC writes 0 to rd on success
+            } else {
+                this->regs->setValue(rd, 1);  // SC writes nonzero on failure
+            }
 
-        bool TLB_reserved(std::uint32_t address);
+            this->logger->debug("{} ns. PC: 0x{:x}. A.SC.W: (0x{:x}) <- x{:d}(0x{:x}) ",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                mem_addr, rs2, data);
+
+            return true;
+        }
+
+        bool Exec_A_AMOSWAP() const {
+            std::uint32_t mem_addr;
+            int rd, rs1, rs2;
+            std::uint32_t data;
+            std::uint32_t aux;
+
+            /* These instructions must be atomic */
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            mem_addr = this->regs->getValue(rs1);
+            data = this->mem_intf->readDataMem(mem_addr, 4);
+            this->perf->dataMemoryRead();
+            this->regs->setValue(rd, static_cast<int32_t>(data));
+
+            // swap
+            aux = this->regs->getValue(rs2);
+            this->regs->setValue(rs2, static_cast<int32_t>(data));
+
+            this->mem_intf->writeDataMem(mem_addr, aux, 4);
+            this->perf->dataMemoryWrite();
+
+            this->logger->debug("{} ns. PC: 0x{:x}. A.AMOSWAP");
+
+            return true;
+        }
+
+        bool Exec_A_AMOADD() const {
+            std::uint32_t mem_addr;
+            int rd, rs1, rs2;
+            std::uint32_t data;
+
+            /* These instructions must be atomic */
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            mem_addr = this->regs->getValue(rs1);
+            data = this->mem_intf->readDataMem(mem_addr, 4);
+            this->perf->dataMemoryRead();
+
+            this->regs->setValue(rd, static_cast<int32_t>(data));
+
+            // add
+            data = data + this->regs->getValue(rs2);
+
+            this->mem_intf->writeDataMem(mem_addr, data, 4);
+            this->perf->dataMemoryWrite();
+
+            this->logger->debug("{} ns. PC: 0x{:x}. A.AMOADD");
+
+            return true;
+        }
+
+        bool Exec_A_AMOXOR() const {
+            std::uint32_t mem_addr;
+            int rd, rs1, rs2;
+            std::uint32_t data;
+
+            /* These instructions must be atomic */
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            mem_addr = this->regs->getValue(rs1);
+            data = this->mem_intf->readDataMem(mem_addr, 4);
+            this->perf->dataMemoryRead();
+
+            this->regs->setValue(rd, static_cast<int32_t>(data));
+
+            // add
+            data = data ^ this->regs->getValue(rs2);
+
+            this->mem_intf->writeDataMem(mem_addr, data, 4);
+            this->perf->dataMemoryWrite();
+
+            this->logger->debug("{} ns. PC: 0x{:x}. A.AMOXOR");
+
+            return true;
+        }
+
+        bool Exec_A_AMOAND() const {
+            std::uint32_t mem_addr;
+            int rd, rs1, rs2;
+            std::uint32_t data;
+
+            /* These instructions must be atomic */
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            mem_addr = this->regs->getValue(rs1);
+            data = this->mem_intf->readDataMem(mem_addr, 4);
+            this->perf->dataMemoryRead();
+
+            this->regs->setValue(rd, static_cast<int32_t>(data));
+
+            // add
+            data = data & this->regs->getValue(rs2);
+
+            this->mem_intf->writeDataMem(mem_addr, data, 4);
+            this->perf->dataMemoryWrite();
+
+            this->logger->debug("{} ns. PC: 0x{:x}. A.AMOAND");
+
+            return true;
+        }
+
+        bool Exec_A_AMOOR() const {
+            std::uint32_t mem_addr;
+            int rd, rs1, rs2;
+            std::uint32_t data;
+
+            /* These instructions must be atomic */
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            mem_addr = this->regs->getValue(rs1);
+            data = this->mem_intf->readDataMem(mem_addr, 4);
+            this->perf->dataMemoryRead();
+
+            this->regs->setValue(rd, static_cast<int32_t>(data));
+
+            // add
+            data = data | this->regs->getValue(rs2);
+
+            this->mem_intf->writeDataMem(mem_addr, data, 4);
+            this->perf->dataMemoryWrite();
+
+            this->logger->debug("{} ns. PC: 0x{:x}. A.AMOOR");
+
+            return true;
+        }
+
+        bool Exec_A_AMOMIN() const {
+            std::uint32_t mem_addr;
+            int rd, rs1, rs2;
+            std::uint32_t data;
+            std::uint32_t aux;
+
+            /* These instructions must be atomic */
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            mem_addr = this->regs->getValue(rs1);
+            data = this->mem_intf->readDataMem(mem_addr, 4);
+            this->perf->dataMemoryRead();
+
+            this->regs->setValue(rd, static_cast<int32_t>(data));
+
+            // min
+            aux = this->regs->getValue(rs2);
+            if ((int32_t) data < (int32_t) aux) {
+                aux = data;
+            }
+
+            this->mem_intf->writeDataMem(mem_addr, aux, 4);
+            this->perf->dataMemoryWrite();
+
+            this->logger->debug("{} ns. PC: 0x{:x}. A.AMOMIN");
+
+            return true;
+        }
+
+        bool Exec_A_AMOMAX() const {
+            std::uint32_t mem_addr;
+            int rd, rs1, rs2;
+            std::uint32_t data;
+            std::uint32_t aux;
+
+            /* These instructions must be atomic */
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            mem_addr = this->regs->getValue(rs1);
+            data = this->mem_intf->readDataMem(mem_addr, 4);
+            this->perf->dataMemoryRead();
+
+            this->regs->setValue(rd, static_cast<int32_t>(data));
+
+            // >
+            aux = this->regs->getValue(rs2);
+            if ((int32_t) data > (int32_t) aux) {
+                aux = data;
+            }
+
+            this->mem_intf->writeDataMem(mem_addr, aux, 4);
+            this->perf->dataMemoryWrite();
+
+            this->logger->debug("{} ns. PC: 0x{:x}. A.AMOMAX");
+
+            return true;
+        }
+
+        bool Exec_A_AMOMINU() const {
+            std::uint32_t mem_addr;
+            int rd, rs1, rs2;
+            std::uint32_t data;
+            std::uint32_t aux;
+
+            /* These instructions must be atomic */
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            mem_addr = this->regs->getValue(rs1);
+            data = this->mem_intf->readDataMem(mem_addr, 4);
+            this->perf->dataMemoryRead();
+
+            this->regs->setValue(rd, static_cast<int32_t>(data));
+
+            // min
+            aux = this->regs->getValue(rs2);
+            if (data < aux) {
+                aux = data;
+            }
+
+            this->mem_intf->writeDataMem(mem_addr, aux, 4);
+            this->perf->dataMemoryWrite();
+
+            this->logger->debug("{} ns. PC: 0x{:x}. A.AMOMINU");
+
+            return true;
+        }
+
+        bool Exec_A_AMOMAXU() const {
+            std::uint32_t mem_addr;
+            int rd, rs1, rs2;
+            std::uint32_t data;
+            std::uint32_t aux;
+
+            /* These instructions must be atomic */
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            mem_addr = this->regs->getValue(rs1);
+            data = this->mem_intf->readDataMem(mem_addr, 4);
+            this->perf->dataMemoryRead();
+
+            this->regs->setValue(rd, static_cast<int32_t>(data));
+
+            // max
+            aux = this->regs->getValue(rs2);
+            if (data > aux) {
+                aux = data;
+            }
+
+            this->mem_intf->writeDataMem(mem_addr, aux, 4);
+            this->perf->dataMemoryWrite();
+
+            this->logger->debug("{} ns. PC: 0x{:x}. A.AMOMAXU");
+
+            return true;
+        }
+
+        void TLB_reserve(std::uint32_t address) {
+            TLB_A_Entries.insert(address);
+        }
+
+        bool TLB_reserved(std::uint32_t address) {
+            if (TLB_A_Entries.count(address) == 1) {
+                TLB_A_Entries.erase(address);
+                return true;
+            } else {
+                return false;
+            }
+        }
+
+        bool process_instruction(Instruction &inst) {
+            bool PC_not_affected = true;
+
+            this->setInstr(inst.getInstr());
+
+            switch (decode()) {
+                case OP_A_LR:
+                    Exec_A_LR();
+                    break;
+                case OP_A_SC:
+                    Exec_A_SC();
+                    break;
+                case OP_A_AMOSWAP:
+                    Exec_A_AMOSWAP();
+                    break;
+                case OP_A_AMOADD:
+                    Exec_A_AMOADD();
+                    break;
+                case OP_A_AMOXOR:
+                    Exec_A_AMOXOR();
+                    break;
+                case OP_A_AMOAND:
+                    Exec_A_AMOAND();
+                    break;
+                case OP_A_AMOOR:
+                    Exec_A_AMOOR();
+                    break;
+                case OP_A_AMOMIN:
+                    Exec_A_AMOMIN();
+                    break;
+                case OP_A_AMOMAX:
+                    Exec_A_AMOMAX();
+                    break;
+                case OP_A_AMOMINU:
+                    Exec_A_AMOMINU();
+                    break;
+                case OP_A_AMOMAXU:
+                    Exec_A_AMOMAXU();
+                    break;
+                    [[unlikely]] default:
+                    std::cout << "A instruction not implemented yet" << std::endl;
+                    inst.dump();
+                    this->NOP();
+                    break;
+            }
+
+            return PC_not_affected;
+        }
 
     private:
         std::unordered_set<std::uint32_t> TLB_A_Entries;

inc/CPU.h

@@ -28,13 +28,28 @@
 
 
 namespace riscv_tlm {
-/**
+
- * @brief ISC_V CPU model
+    class CPU : sc_core::sc_module  {
- * @param name name of the module
- */
-    class CPU : sc_core::sc_module {
     public:
 
+        /* Constructors */
+        explicit CPU(sc_core::sc_module_name const &name, bool debug);
+
+        CPU() noexcept = delete;
+        CPU(const CPU& other) noexcept = delete;
+        CPU(CPU && other) noexcept = delete;
+        CPU& operator=(const CPU& other) noexcept = delete;
+        CPU& operator=(CPU&& other) noexcept = delete;
+
+        /* Destructors */
+        ~CPU() override = default;
+
+        /**
+         * @brief Perform one instruction step
+         * @return Breackpoint found (TBD, always true)
+         */
+        virtual bool CPU_step() = 0;
+
         /**
          * @brief Instruction Memory bus socket
          * @param trans transction to perfoem
@@ -49,60 +64,91 @@ namespace riscv_tlm {
          */
         tlm_utils::simple_target_socket<CPU> irq_line_socket;
 
+        /**
+        * @brief DMI pointer is not longer valid
+        * @param start memory address region start
+        * @param end memory address region end
+        */
+        void invalidate_direct_mem_ptr(sc_dt::uint64 start, sc_dt::uint64 end);
+
+        /**
+        * @brief CPU main thread
+        */
+        [[noreturn]] void CPU_thread();
+
+        /**
+         * @brief Process and triggers IRQ if all conditions met
+         * @return true if IRQ is triggered, false otherwise
+         */
+        virtual bool cpu_process_IRQ() = 0;
+
+        /**
+         * @brief callback for IRQ simple socket
+         * @param trans transaction to perform (empty)
+         * @param delay time to annotate
+         *
+         * it triggers an IRQ when called
+         */
+        virtual void call_interrupt(tlm::tlm_generic_payload &trans,
+                            sc_core::sc_time &delay) = 0;
+
+        virtual std::uint64_t getStartDumpAddress() = 0;
+        virtual std::uint64_t getEndDumpAddress() = 0;
+
+    public:
+        MemoryInterface *mem_intf;
+    protected:
+        Performance *perf;
+        std::shared_ptr<spdlog::logger> logger;
+        tlm_utils::tlm_quantumkeeper *m_qk;
+        Instruction inst;
+        bool interrupt;
+        bool irq_already_down;
+        sc_core::sc_time default_time;
+        bool dmi_ptr_valid;
+        tlm::tlm_generic_payload trans;
+        unsigned char *dmi_ptr = nullptr;
+    };
+
+    /**
+     * @brief RISC_V CPU 32 bits model
+     * @param name name of the module
+     */
+    class RV32 : public CPU {
+    public:
+        using BaseType = std::uint32_t;
+
         /**
          * @brief Constructor
          * @param name Module name
          * @param PC   Program Counter initialize value
          * @param debug To start debugging
          */
-        CPU(sc_core::sc_module_name const &name, std::uint32_t PC, bool debug);
+        RV32(sc_core::sc_module_name const &name, BaseType PC, bool debug);
 
         /**
          * @brief Destructor
          */
-        ~CPU() override;
+        ~RV32() override;
 
-        MemoryInterface *mem_intf;
+        bool CPU_step() override;
-
+        Registers<BaseType> *getRegisterBank() { return register_bank; }
-        bool CPU_step();
-
-
-        Registers *getRegisterBank() { return register_bank; }
 
     private:
-        Registers *register_bank;
+        Registers<BaseType> *register_bank;
-        Performance *perf;
+        C_extension<BaseType> *c_inst;
-        std::shared_ptr<spdlog::logger> logger;
+        M_extension<BaseType> *m_inst;
-        C_extension *c_inst;
+        A_extension<BaseType> *a_inst;
-        M_extension *m_inst;
+        BASE_ISA<BaseType> *exec;
-        A_extension *a_inst;
+        BaseType int_cause;
-        BASE_ISA *exec;
+        BaseType INSTR;
-        tlm_utils::tlm_quantumkeeper *m_qk;
-
-        Instruction inst;
-        bool interrupt;
-        std::uint32_t int_cause;
-        bool irq_already_down;
-        sc_core::sc_time default_time;
-        bool dmi_ptr_valid;
-
-        tlm::tlm_generic_payload trans;
-        std::uint32_t INSTR;
-        unsigned char *dmi_ptr = nullptr;
-
 
         /**
          *
          * @brief Process and triggers IRQ if all conditions met
          * @return true if IRQ is triggered, false otherwise
          */
-        bool cpu_process_IRQ();
+        bool cpu_process_IRQ() override;
-
-        /**
-         * main thread for CPU simulation
-         * @brief CPU mai thread
-         */
-        [[noreturn]] void CPU_thread();
 
         /**
          * @brief callback for IRQ simple socket
@@ -112,15 +158,65 @@ namespace riscv_tlm {
          * it triggers an IRQ when called
          */
         void call_interrupt(tlm::tlm_generic_payload &trans,
-                            sc_core::sc_time &delay);
+                            sc_core::sc_time &delay) override;
+
+        std::uint64_t getStartDumpAddress() override;
+        std::uint64_t getEndDumpAddress() override;
+    }; // RV32 class
+
+    /**
+     * @brief RISC_V CPU 64 bits model
+     * @param name name of the module
+     */
+    class RV64 : public CPU {
+    public:
+        using BaseType = std::uint64_t;
 
         /**
-         * DMI pointer is not longer valid
+         * @brief Constructor
-         * @param start memory address region start
+         * @param name Module name
-         * @param end memory address region end
+         * @param PC   Program Counter initialize value
+         * @param debug To start debugging
          */
-        void invalidate_direct_mem_ptr(sc_dt::uint64 start, sc_dt::uint64 end);
+        RV64(sc_core::sc_module_name const &name, BaseType PC, bool debug);
-    };
+
+        /**
+         * @brief Destructor
+         */
+        ~RV64() override;
+
+        bool CPU_step() override;
+        Registers<BaseType> *getRegisterBank() { return register_bank; }
+
+    private:
+        Registers<BaseType> *register_bank;
+        C_extension<BaseType> *c_inst;
+        M_extension<BaseType> *m_inst;
+        A_extension<BaseType> *a_inst;
+        BASE_ISA<BaseType> *exec;
+        BaseType int_cause;
+        BaseType INSTR;
+
+        /**
+         *
+         * @brief Process and triggers IRQ if all conditions met
+         * @return true if IRQ is triggered, false otherwise
+         */
+        bool cpu_process_IRQ() override;
+
+        /**
+         * @brief callback for IRQ simple socket
+         * @param trans transaction to perform (empty)
+         * @param delay time to annotate
+         *
+         * it triggers an IRQ when called
+         */
+        void call_interrupt(tlm::tlm_generic_payload &trans,
+                            sc_core::sc_time &delay) override;
+
+        std::uint64_t getStartDumpAddress() override;
+        std::uint64_t getEndDumpAddress() override;
+    }; // RV64 class
 
 }
 #endif

inc/Debug.h

@@ -25,7 +25,7 @@ namespace riscv_tlm {
     class Debug : sc_core::sc_module {
     public:
 
-        Debug(riscv_tlm::CPU *cpu, Memory *mem);
+        Debug(riscv_tlm::RV32 *cpu, Memory *mem);
 
         ~Debug() override;
 
@@ -41,7 +41,7 @@ namespace riscv_tlm {
         static constexpr size_t bufsize = 1024 * 8;
         char iobuf[bufsize]{};
         int conn;
-        riscv_tlm::CPU *dbg_cpu;
+        riscv_tlm::RV32 *dbg_cpu;
         Memory *dbg_mem;
         tlm::tlm_generic_payload dbg_trans;
         unsigned char pyld_array[128]{};

inc/M_extension.h

@@ -25,7 +25,11 @@ namespace riscv_tlm {
         OP_M_DIVU,
         OP_M_REM,
         OP_M_REMU,
-
+        OP_M_MULW,
+        OP_M_DIVW,
+        OP_M_DIVUW,
+        OP_M_REMW,
+        OP_M_REMUW,
         OP_M_ERROR
     } op_M_Codes;
 
@@ -38,46 +42,414 @@ namespace riscv_tlm {
         M_DIVU = 0b101,
         M_REM = 0b110,
         M_REMU = 0b111,
+        M_MULW = 0b000,
+        M_DIVW = 0b100,
+        M_DIVUW = 0b101,
+        M_REMW = 0b110,
+        M_REMUW = 0b111,
     } M_Codes;
 
 /**
  * @brief Instruction decoding and fields access
  */
-    class M_extension : public extension_base {
+    template<typename T>
+    class M_extension : public extension_base<T> {
     public:
 
         /**
-         * @brief Constructor, same as base clase
+         * @brief Constructor, same as base class
          */
-        using extension_base::extension_base;
+        using extension_base<T>::extension_base;
+
+        using signed_T = typename std::make_signed<T>::type;
+        using unsigned_T = typename std::make_unsigned<T>::type;
 
         /**
          * @brief Decodes opcode of instruction
          * @return opcode of instruction
          */
-        op_M_Codes decode() const;
+        [[nodiscard]] op_M_Codes decode() const {
 
-        inline void dump() const override {
+            if (this->m_instr.range(6,0) == 0b110011) {
-            std::cout << std::hex << "0x" << m_instr << std::dec << std::endl;
+                switch (opcode()) {
+                    case M_MUL:
+                        return OP_M_MUL;
+                        break;
+                    case M_MULH:
+                        return OP_M_MULH;
+                        break;
+                    case M_MULHSU:
+                        return OP_M_MULHSU;
+                        break;
+                    case M_MULHU:
+                        return OP_M_MULHU;
+                        break;
+                    case M_DIV:
+                        return OP_M_DIV;
+                        break;
+                    case M_DIVU:
+                        return OP_M_DIVU;
+                        break;
+                    case M_REM:
+                        return OP_M_REM;
+                        break;
+                    case M_REMU:
+                        return OP_M_REMU;
+                        break;
+                        [[unlikely]] default:
+                        return OP_M_ERROR;
+                        break;
+                }
+            } else {
+                switch (opcode()) {
+                    case M_MULW:
+                        return OP_M_MULW;
+                        break;
+                    case M_DIVW:
+                        return OP_M_DIVW;
+                        break;
+                    case M_DIVUW:
+                        return OP_M_DIVUW;
+                        break;
+                    case M_REMW:
+                        return OP_M_REMW;
+                        break;
+                    case M_REMUW:
+                        return OP_M_REMUW;
+                        break;
+                    [[unlikely]] default:
+                        return OP_M_ERROR;
+                        break;
+
+                }
+            }
+
+            return OP_M_ERROR;
         }
 
-        bool Exec_M_MUL() const;
+        inline void dump() const override {
+            std::cout << std::hex << "0x" << this->m_instr << std::dec << std::endl;
+        }
 
-        bool Exec_M_MULH() const;
+        void Exec_M_MUL() const {
+            unsigned int rd, rs1, rs2;
+            signed_T multiplier, multiplicand;
+            std::int64_t result;
 
-        bool Exec_M_MULHSU() const;
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
 
-        bool Exec_M_MULHU() const;
+            multiplier = static_cast<signed_T>(this->regs->getValue(rs1));
+            multiplicand = static_cast<signed_T>(this->regs->getValue(rs2));
+            result = static_cast<std::int64_t>(multiplier * multiplicand);
 
-        bool Exec_M_DIV() const;
+            this->regs->setValue(rd, static_cast<signed_T>(result));
 
-        bool Exec_M_DIVU() const;
+            this->logger->debug("{} ns. PC: 0x{:x}. M.MUL: x{:d}({:d}) * x{:d}({:d}) -> x{:d}({:d})",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                rs1, rs2, multiplier, multiplicand, rd, result);
+        }
 
-        bool Exec_M_REM() const;
+        void Exec_M_MULH() const;
 
-        bool Exec_M_REMU() const;
+        void Exec_M_MULHSU() const;
 
-        bool process_instruction(Instruction &inst);
+        void Exec_M_MULHU() const;
+
+        void Exec_M_DIV() const {
+            unsigned int rd, rs1, rs2;
+            signed_T divisor, dividend;
+            std::int64_t result;
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            dividend = this->regs->getValue(rs1);
+            divisor = this->regs->getValue(rs2);
+
+            if (divisor == 0) {
+                result = -1;
+            } else if ((divisor == -1) && (dividend == static_cast<std::int32_t>(0x80000000))) {
+                result = 0x0000000080000000;
+            } else {
+                result = dividend / divisor;
+            }
+
+            this->regs->setValue(rd, result);
+
+            this->logger->debug("{} ns. PC: 0x{:x}. M.DIV: x{:d} / x{:d} -> x{:d}({:d})",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                rs1, rs2, rd, result);
+        }
+
+        void Exec_M_DIVU() const {
+            unsigned int rd, rs1, rs2;
+            unsigned_T divisor, dividend;
+            std::uint64_t result;
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            dividend = this->regs->getValue(rs1);
+            divisor = this->regs->getValue(rs2);
+
+            if (divisor == 0) {
+                result = -1;
+            } else {
+                result = dividend / divisor;
+            }
+
+            this->regs->setValue(rd, result);
+
+            this->logger->debug("{} ns. PC: 0x{:x}. M.DIVU: x{:d} / x{:d} -> x{:d}({:d})",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                rs1, rs2, rd, result);
+        }
+
+        void Exec_M_REM() const {
+            unsigned int rd, rs1, rs2;
+            signed_T divisor, dividend;
+            signed_T result;
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            dividend = this->regs->getValue(rs1);
+            divisor = this->regs->getValue(rs2);
+
+            if (divisor == 0) {
+                result = dividend;
+            } else if ((divisor == -1) && (dividend == static_cast<std::int32_t>(0x80000000))) {
+                result = 0;
+            } else {
+                result = dividend % divisor;
+            }
+
+            this->regs->setValue(rd, result);
+
+            this->logger->debug("{} ns. PC: 0x{:x}. M.REM: x{:d} % x{:d} -> x{:d}({:d})",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                rs1, rs2, rd, result);
+        }
+
+        void Exec_M_REMU() const {
+            unsigned int rd, rs1, rs2;
+            unsigned_T divisor, dividend;
+            unsigned_T result;
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            dividend = this->regs->getValue(rs1);
+            divisor = this->regs->getValue(rs2);
+
+            if (divisor == 0) {
+                result = dividend;
+            } else {
+                result = dividend % divisor;
+            }
+
+            this->regs->setValue(rd, result);
+
+            this->logger->debug("{} ns. PC: 0x{:x}. M.REMU: x{:d} % x{:d} -> x{:d}({:d})",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                rs1, rs2, rd, result);
+        }
+
+        void Exec_M_MULW() const {
+            unsigned int rd, rs1, rs2;
+            std::uint32_t multiplier, multiplicand;
+            std::int64_t result;
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            multiplier = static_cast<std::uint32_t>(this->regs->getValue(rs1) & 0x00000000FFFFFFFF);
+            multiplicand = static_cast<std::uint32_t>(this->regs->getValue(rs2) & 0x00000000FFFFFFFF);
+            result = static_cast<std::int32_t>((multiplier * multiplicand) & 0x00000000FFFFFFFF);
+
+            this->regs->setValue(rd, result);
+
+            this->logger->debug("{} ns. PC: 0x{:x}. M.MULW: x{:d}({:d}) * x{:d}({:d}) -> x{:d}({:d})",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                rs1, rs2, multiplier, multiplicand, rd, result);
+        }
+
+        void Exec_M_DIVW() const {
+            unsigned int rd, rs1, rs2;
+            std::int32_t divisor, dividend;
+            std::int64_t result;
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            dividend = static_cast<std::int32_t>(this->regs->getValue(rs1) & 0x00000000FFFFFFFF);
+            divisor = static_cast<std::int32_t>(this->regs->getValue(rs2) & 0x00000000FFFFFFFF);
+
+            if (divisor == 0) {
+                result = -1;
+            } else if ((divisor == -1) && (dividend == static_cast<std::int32_t>(0x80000000))) {
+                result = 0x0000000080000000;
+            } else {
+                result = dividend / divisor;
+            }
+
+            this->regs->setValue(rd, result);
+
+            this->logger->debug("{} ns. PC: 0x{:x}. M.DIVW: x{:d} / x{:d} -> x{:d}({:d})",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                rs1, rs2, rd, result);
+        }
+
+        void Exec_M_DIVUW() const {
+            unsigned int rd, rs1, rs2;
+            std::uint32_t divisor, dividend;
+            std::int64_t result;
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            dividend = static_cast<std::uint32_t>(this->regs->getValue(rs1) & 0x00000000FFFFFFFF);
+            divisor = static_cast<std::uint32_t>(this->regs->getValue(rs2) & 0x00000000FFFFFFFF);
+
+            if (divisor == 0) {
+                result = -1;
+            } else if ((divisor == 0xFFFFFFFF) && (dividend == static_cast<std::uint32_t>(0x80000000))) {
+                result = 0x0000000080000000;
+            } else {
+                result = static_cast<std::int32_t>(dividend / divisor);
+            }
+
+            this->regs->setValue(rd, result);
+
+            this->logger->debug("{} ns. PC: 0x{:x}. M.DIVUW: x{:d} / x{:d} -> x{:d}({:d})",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                rs1, rs2, rd, result);
+        }
+
+        void Exec_M_REMW() const {
+            unsigned int rd, rs1, rs2;
+            std::int32_t divisor, dividend;
+            signed_T result;
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            dividend = static_cast<std::int32_t>(this->regs->getValue(rs1) & 0x00000000FFFFFFFF);
+            divisor = static_cast<std::int32_t>(this->regs->getValue(rs2) & 0x00000000FFFFFFFF);
+
+            if (divisor == 0) {
+                result = dividend;
+            } else if (divisor == -1) {
+                result = 0;
+            } else {
+                result = dividend % divisor;
+            }
+
+            this->regs->setValue(rd, result);
+
+            this->logger->debug("{} ns. PC: 0x{:x}. M.REMW: x{:d} % x{:d} -> x{:d}({:d})",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                rs1, rs2, rd, result);
+        }
+
+        void Exec_M_REMUW() const {
+            unsigned int rd, rs1, rs2;
+            std::uint32_t divisor, dividend;
+            std::int64_t result;
+
+            rd = this->get_rd();
+            rs1 = this->get_rs1();
+            rs2 = this->get_rs2();
+
+            dividend = static_cast<std::uint32_t>(this->regs->getValue(rs1) & 0x00000000FFFFFFFF);
+            divisor = static_cast<std::uint32_t>(this->regs->getValue(rs2) & 0x00000000FFFFFFFF);
+
+            if (divisor == 0) {
+                result = static_cast<std::int32_t>(dividend);
+            } else {
+                result = static_cast<std::int32_t>(dividend % divisor);
+            }
+
+            this->regs->setValue(rd, result);
+
+            this->logger->debug("{} ns. PC: 0x{:x}. M.REMUW: x{:d}({:d}) % x{:d}({:d}) -> x{:d}({:d})",
+                                sc_core::sc_time_stamp().value(),
+                                this->regs->getPC(),
+                                rs1, dividend, rs2, divisor, rd, result);
+        }
+
+        bool process_instruction(Instruction &inst) {
+            this->setInstr(inst.getInstr());
+
+            switch (decode()) {
+                case OP_M_MUL:
+                    Exec_M_MUL();
+                    break;
+                case OP_M_MULH:
+                    Exec_M_MULH();
+                    break;
+                case OP_M_MULHSU:
+                    Exec_M_MULHSU();
+                    break;
+                case OP_M_MULHU:
+                    Exec_M_MULHU();
+                    break;
+                case OP_M_DIV:
+                    Exec_M_DIV();
+                    break;
+                case OP_M_DIVU:
+                    Exec_M_DIVU();
+                    break;
+                case OP_M_REM:
+                    Exec_M_REM();
+                    break;
+                case OP_M_REMU:
+                    Exec_M_REMU();
+                    break;
+                case OP_M_MULW:
+                    Exec_M_MULW();
+                    break;
+                case OP_M_DIVW:
+                    Exec_M_DIVW();
+                    break;
+                case OP_M_DIVUW:
+                    Exec_M_DIVUW();
+                    break;
+                case OP_M_REMW:
+                    Exec_M_REMW();
+                    break;
+                case OP_M_REMUW:
+                    Exec_M_REMUW();
+                    break;
+                [[unlikely]] default:
+                    std::cout << "M instruction not implemented yet" << "\n";
+                    inst.dump();
+                    //NOP(inst);
+                    sc_core::sc_stop();
+                    break;
+            }
+
+            return true;
+        }
 
     private:
 
@@ -85,8 +457,8 @@ namespace riscv_tlm {
          * @brief Access to opcode field
          * @return return opcode field
          */
-        inline std::int32_t opcode() const override {
+        [[nodiscard]] inline unsigned_T opcode() const override {
-            return static_cast<std::int32_t>(m_instr.range(14, 12));
+            return static_cast<unsigned_T>(this->m_instr.range(14, 12));
         }
 
     };

inc/Registers.h

@@ -10,6 +10,7 @@
 #define REGISTERS_H
 
 #define SC_INCLUDE_DYNAMIC_PROCESSES
+
 #include <iomanip>
 #include <unordered_map>
 
@@ -112,6 +113,7 @@ namespace riscv_tlm {
 /**
  * @brief Register file implementation
  */
+    template<typename T>
     class Registers {
     public:
 
@@ -186,33 +188,56 @@ namespace riscv_tlm {
         /**
          * Default constructor
          */
-        Registers();
+        Registers() {
+            perf = Performance::getInstance();
+
+            initCSR();
+            register_bank[sp] = Memory::SIZE - 4; // default stack at the end of the memory
+            register_PC = 0x80000000;       // default _start address
+        };
 
         /**
          * Set value for a register
          * @param reg_num register number
          * @param value   register value
          */
-        void setValue(int reg_num, std::int32_t value);
+        void setValue(unsigned int reg_num, T value) {
+            if ((reg_num != 0) && (reg_num < 32)) {
+                register_bank[reg_num] = value;
+                perf->registerWrite();
+            }
+        }
 
         /**
          * Returns register value
          * @param  reg_num register number
          * @return         register value
          */
-        std::uint32_t getValue(int reg_num) const;
+        T getValue(unsigned int reg_num) const {
+            if (reg_num < 32) {
+                perf->registerRead();
+                return register_bank[reg_num];
+            } else {
+                /* Extend sign for any possible T type */
+                return static_cast<T>(std::numeric_limits<T>::max());
+            }
+        }
 
         /**
          * Returns PC value
          * @return PC value
          */
-        std::uint32_t getPC() const;
+        T getPC() const {
+            return register_PC;
+        }
 
         /**
          * Sets arbitraty value to PC
          * @param new_pc new address to PC
          */
-        void setPC(std::uint32_t new_pc);
+        void setPC(T new_pc) {
+            register_PC = new_pc;
+        }
 
         /**
          * Increments PC couunter to next address
@@ -230,40 +255,88 @@ namespace riscv_tlm {
          * @param csr CSR number to access
          * @return CSR value
          */
-        std::uint32_t getCSR(int csr);
+        T getCSR(int csr) {
+            T ret_value;
+
+            switch (csr) {
+                case CSR_CYCLE:
+                case CSR_MCYCLE:
+                    ret_value = static_cast<std::uint64_t>(sc_core::sc_time(
+                            sc_core::sc_time_stamp()
+                            - sc_core::sc_time(sc_core::SC_ZERO_TIME)).to_double())
+                                & 0x00000000FFFFFFFF;
+                    break;
+                case CSR_CYCLEH:
+                case CSR_MCYCLEH:
+                    ret_value = static_cast<std::uint32_t>((std::uint64_t) (sc_core::sc_time(
+                            sc_core::sc_time_stamp()
+                            - sc_core::sc_time(sc_core::SC_ZERO_TIME)).to_double())
+                                                                   >> 32 & 0x00000000FFFFFFFF);
+                    break;
+                case CSR_TIME:
+                    ret_value = static_cast<std::uint64_t>(sc_core::sc_time(
+                            sc_core::sc_time_stamp()
+                            - sc_core::sc_time(sc_core::SC_ZERO_TIME)).to_double())
+                                & 0x00000000FFFFFFFF;
+                    break;
+                case CSR_TIMEH:
+                    ret_value = static_cast<std::uint32_t>((std::uint64_t) (sc_core::sc_time(
+                            sc_core::sc_time_stamp()
+                            - sc_core::sc_time(sc_core::SC_ZERO_TIME)).to_double())
+                                                                   >> 32 & 0x00000000FFFFFFFF);
+                    break;
+                    [[likely]] default:
+                    ret_value = CSR[csr];
+                    break;
+            }
+            return ret_value;
+        }
 
         /**
          * @brief Set CSR value
          * @param csr   CSR number to access
          * @param value new value to register
          */
-        void setCSR(int csr, std::uint32_t value);
+        void setCSR(int csr, T value) {
+            /* @FIXME: rv32mi-p-ma_fetch tests doesn't allow MISA to be writable,
+             * but Volume II: Privileged Architecture v1.10 says MISA is writable (?)
+             */
+            if (csr != CSR_MISA) {
+                CSR[csr] = value;
+            }
+        }
 
         /**
          * Dump register data to console
          */
-        void dump();
+        void dump() const;
 
     private:
         /**
          * bank of registers (32 regs of 32bits each)
          */
-        std::array<std::uint32_t, 32> register_bank = {{0}};
+        std::array<T, 32> register_bank = {{0}};
 
         /**
          * Program counter (32 bits width)
          */
-        std::uint32_t register_PC;
+        T register_PC;
 
         /**
          * CSR registers (4096 maximum)
          */
-        std::unordered_map<std::uint32_t, unsigned int> CSR;
+        std::unordered_map<T, unsigned int> CSR;
-
 
         Performance *perf;
 
         void initCSR();
+        /*
+        void initCSR() {
+            CSR[CSR_MISA] = MISA_MXL | MISA_M_EXTENSION | MISA_C_EXTENSION
+                            | MISA_A_EXTENSION | MISA_I_BASE;
+            CSR[CSR_MSTATUS] = MISA_MXL;
+        }
+         */
     };
 }
 #endif

inc/extension_base.h

@@ -28,60 +28,107 @@
 
 namespace riscv_tlm {
 
+    template<typename T>
     class extension_base {
 
+        using signed_T = typename std::make_signed<T>::type;
+        using unsigned_T = typename std::make_unsigned<T>::type;
+
     public:
-        extension_base(const sc_dt::sc_uint<32> &instr, Registers *register_bank,
+        extension_base(const T &instr, Registers<T> *register_bank,
-                       MemoryInterface *mem_interface);
+                       MemoryInterface *mem_interface) :
+                m_instr(instr), regs(register_bank), mem_intf(mem_interface) {
 
-        virtual ~extension_base() = 0;
+            perf = Performance::getInstance();
+            logger = spdlog::get("my_logger");
+        }
 
-        void setInstr(std::uint32_t p_instr);
+        virtual ~extension_base() = default;
 
-        void RaiseException(std::uint32_t cause, std::uint32_t inst);
+        void setInstr(std::uint32_t p_instr) {
+            m_instr = sc_dt::sc_uint<32>(p_instr);
+        }
 
-        bool NOP();
+        void RaiseException(std::uint32_t cause, std::uint32_t inst) {
+            std::uint32_t new_pc, current_pc, m_cause;
+
+            current_pc = regs->getPC();
+            m_cause = regs->getCSR(CSR_MSTATUS);
+            m_cause |= cause;
+
+            new_pc = regs->getCSR(CSR_MTVEC);
+
+            regs->setCSR(CSR_MEPC, current_pc);
+
+            if (cause == EXCEPTION_CAUSE_ILLEGAL_INSTRUCTION) {
+                regs->setCSR(CSR_MTVAL, inst);
+            } else {
+                regs->setCSR(CSR_MTVAL, current_pc);
+            }
+
+            regs->setCSR(CSR_MCAUSE, cause);
+            regs->setCSR(CSR_MSTATUS, m_cause);
+
+            regs->setPC(new_pc);
+
+            logger->debug("{} ns. PC: 0x{:x}. Exception! new PC 0x{:x} ", sc_core::sc_time_stamp().value(),
+                          regs->getPC(),
+                          new_pc);
+        }
+
+        bool NOP() {
+            logger->debug("{} ns. PC: 0x{:x}. NOP! new PC 0x{:x} ", sc_core::sc_time_stamp().value(), regs->getPC());
+            logger->flush();
+            sc_core::sc_stop();
+            return true;
+        }
 
         /* pure virtual functions */
-        virtual std::int32_t opcode() const = 0;
+        virtual unsigned_T opcode() const = 0;
 
-        virtual std::int32_t get_rd() const {
+        virtual unsigned int get_rd() const {
             return m_instr.range(11, 7);
         }
 
-        virtual void set_rd(std::int32_t value) {
+        virtual void set_rd(unsigned int value) {
             m_instr.range(11, 7) = value;
         }
 
-        virtual std::int32_t get_rs1() const {
+        virtual unsigned int get_rs1() const {
             return m_instr.range(19, 15);
         }
 
-        virtual void set_rs1(std::int32_t value) {
+        virtual void set_rs1(unsigned int value) {
             m_instr.range(19, 15) = value;
         }
 
-        virtual std::int32_t get_rs2() const {
+        virtual unsigned int get_rs2() const {
             return m_instr.range(24, 20);
         }
 
-        virtual void set_rs2(std::int32_t value) {
+        virtual void set_rs2(unsigned int value) {
             m_instr.range(24, 20) = value;
         }
 
-        virtual std::int32_t get_funct3() const {
+        virtual unsigned int get_funct3() const {
             return m_instr.range(14, 12);
         }
 
-        virtual void set_funct3(std::int32_t value) {
+        virtual void set_funct3(unsigned int value) {
             m_instr.range(14, 12) = value;
         }
 
-        virtual void dump() const;
+        // For RV64 SLLI, SRLI & SRAI
+        virtual unsigned int get_shamt_slli() const {
+            return m_instr.range(25, 20);
+        }
+        virtual void dump() const {
+            std::cout << std::hex << "0x" << m_instr << std::dec << std::endl;
+        }
 
     protected:
         sc_dt::sc_uint<32> m_instr;
-        Registers *regs;
+        Registers<T> *regs;
         Performance *perf;
         MemoryInterface *mem_intf;
         std::shared_ptr<spdlog::logger> logger;

src/A_extension.cpp

@@ -7,439 +7,3 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "A_extension.h"
-
-namespace riscv_tlm {
-
-    op_A_Codes A_extension::decode() const {
-
-        switch (opcode()) {
-            case A_LR:
-                return OP_A_LR;
-                break;
-            case A_SC:
-                return OP_A_SC;
-                break;
-            case A_AMOSWAP:
-                return OP_A_AMOSWAP;
-                break;
-            case A_AMOADD:
-                return OP_A_AMOADD;
-                break;
-            case A_AMOXOR:
-                return OP_A_AMOXOR;
-                break;
-            case A_AMOAND:
-                return OP_A_AMOAND;
-                break;
-            case A_AMOOR:
-                return OP_A_AMOOR;
-                break;
-            case A_AMOMIN:
-                return OP_A_AMOMIN;
-                break;
-            case A_AMOMAX:
-                return OP_A_AMOMAX;
-                break;
-            case A_AMOMINU:
-                return OP_A_AMOMINU;
-                break;
-            case A_AMOMAXU:
-                return OP_A_AMOMAXU;
-                break;
-                [[unlikely]] default:
-                return OP_A_ERROR;
-                break;
-
-        }
-
-        return OP_A_ERROR;
-    }
-
-    bool A_extension::Exec_A_LR() {
-        std::uint32_t mem_addr = 0;
-        int rd, rs1, rs2;
-        std::uint32_t data;
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        if (rs2 != 0) {
-            std::cout << "ILEGAL INSTRUCTION, LR.W: rs2 != 0" << std::endl;
-            RaiseException(EXCEPTION_CAUSE_ILLEGAL_INSTRUCTION, m_instr);
-
-            return false;
-        }
-
-        mem_addr = regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-        regs->setValue(rd, static_cast<int32_t>(data));
-
-        TLB_reserve(mem_addr);
-
-        logger->debug("{} ns. PC: 0x{:x}. A.LR.W: x{:d}(0x{:x}) -> x{:d}(0x{:x}) ", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, mem_addr, rd, data);
-
-        return true;
-    }
-
-    bool A_extension::Exec_A_SC() {
-        std::uint32_t mem_addr;
-        int rd, rs1, rs2;
-        std::uint32_t data;
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        mem_addr = regs->getValue(rs1);
-        data = regs->getValue(rs2);
-
-        if (TLB_reserved(mem_addr)) {
-            mem_intf->writeDataMem(mem_addr, data, 4);
-            perf->dataMemoryWrite();
-            regs->setValue(rd, 0);  // SC writes 0 to rd on success
-        } else {
-            regs->setValue(rd, 1);  // SC writes nonzero on failure
-        }
-
-        logger->debug("{} ns. PC: 0x{:x}. A.SC.W: (0x{:x}) <- x{:d}(0x{:x}) ", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      mem_addr, rs2, data);
-
-        return true;
-    }
-
-    bool A_extension::Exec_A_AMOSWAP() const {
-        std::uint32_t mem_addr;
-        int rd, rs1, rs2;
-        std::uint32_t data;
-        std::uint32_t aux;
-
-        /* These instructions must be atomic */
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        mem_addr = regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-        regs->setValue(rd, static_cast<int32_t>(data));
-
-        // swap
-        aux = regs->getValue(rs2);
-        regs->setValue(rs2, static_cast<int32_t>(data));
-
-        mem_intf->writeDataMem(mem_addr, aux, 4);
-        perf->dataMemoryWrite();
-
-        logger->debug("{} ns. PC: 0x{:x}. A.AMOSWAP");
-
-        return true;
-    }
-
-    bool A_extension::Exec_A_AMOADD() const {
-        std::uint32_t mem_addr;
-        int rd, rs1, rs2;
-        std::uint32_t data;
-
-        /* These instructions must be atomic */
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        mem_addr = regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-
-        regs->setValue(rd, static_cast<int32_t>(data));
-
-        // add
-        data = data + regs->getValue(rs2);
-
-        mem_intf->writeDataMem(mem_addr, data, 4);
-        perf->dataMemoryWrite();
-
-        logger->debug("{} ns. PC: 0x{:x}. A.AMOADD");
-
-        return true;
-    }
-
-    bool A_extension::Exec_A_AMOXOR() const {
-        std::uint32_t mem_addr;
-        int rd, rs1, rs2;
-        std::uint32_t data;
-
-        /* These instructions must be atomic */
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        mem_addr = regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-
-        regs->setValue(rd, static_cast<int32_t>(data));
-
-        // add
-        data = data ^ regs->getValue(rs2);
-
-        mem_intf->writeDataMem(mem_addr, data, 4);
-        perf->dataMemoryWrite();
-
-        logger->debug("{} ns. PC: 0x{:x}. A.AMOXOR");
-
-        return true;
-    }
-
-    bool A_extension::Exec_A_AMOAND() const {
-        std::uint32_t mem_addr;
-        int rd, rs1, rs2;
-        std::uint32_t data;
-
-        /* These instructions must be atomic */
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        mem_addr = regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-
-        regs->setValue(rd, static_cast<int32_t>(data));
-
-        // add
-        data = data & regs->getValue(rs2);
-
-        mem_intf->writeDataMem(mem_addr, data, 4);
-        perf->dataMemoryWrite();
-
-        logger->debug("{} ns. PC: 0x{:x}. A.AMOAND");
-
-        return true;
-    }
-
-    bool A_extension::Exec_A_AMOOR() const {
-        std::uint32_t mem_addr;
-        int rd, rs1, rs2;
-        std::uint32_t data;
-
-        /* These instructions must be atomic */
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        mem_addr = regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-
-        regs->setValue(rd, static_cast<int32_t>(data));
-
-        // add
-        data = data | regs->getValue(rs2);
-
-        mem_intf->writeDataMem(mem_addr, data, 4);
-        perf->dataMemoryWrite();
-
-        logger->debug("{} ns. PC: 0x{:x}. A.AMOOR");
-
-        return true;
-    }
-
-    bool A_extension::Exec_A_AMOMIN() const {
-        std::uint32_t mem_addr;
-        int rd, rs1, rs2;
-        std::uint32_t data;
-        std::uint32_t aux;
-
-        /* These instructions must be atomic */
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        mem_addr = regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-
-        regs->setValue(rd, static_cast<int32_t>(data));
-
-        // min
-        aux = regs->getValue(rs2);
-        if ((int32_t) data < (int32_t) aux) {
-            aux = data;
-        }
-
-        mem_intf->writeDataMem(mem_addr, aux, 4);
-        perf->dataMemoryWrite();
-
-        logger->debug("{} ns. PC: 0x{:x}. A.AMOMIN");
-
-        return true;
-    }
-
-    bool A_extension::Exec_A_AMOMAX() const {
-        std::uint32_t mem_addr;
-        int rd, rs1, rs2;
-        std::uint32_t data;
-        std::uint32_t aux;
-
-        /* These instructions must be atomic */
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        mem_addr = regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-
-        regs->setValue(rd, static_cast<int32_t>(data));
-
-        // >
-        aux = regs->getValue(rs2);
-        if ((int32_t) data > (int32_t) aux) {
-            aux = data;
-        }
-
-        mem_intf->writeDataMem(mem_addr, aux, 4);
-        perf->dataMemoryWrite();
-
-        logger->debug("{} ns. PC: 0x{:x}. A.AMOMAX");
-
-        return true;
-    }
-
-    bool A_extension::Exec_A_AMOMINU() const {
-        std::uint32_t mem_addr;
-        int rd, rs1, rs2;
-        std::uint32_t data;
-        std::uint32_t aux;
-
-        /* These instructions must be atomic */
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        mem_addr = regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-
-        regs->setValue(rd, static_cast<int32_t>(data));
-
-        // min
-        aux = regs->getValue(rs2);
-        if (data < aux) {
-            aux = data;
-        }
-
-        mem_intf->writeDataMem(mem_addr, aux, 4);
-        perf->dataMemoryWrite();
-
-        logger->debug("{} ns. PC: 0x{:x}. A.AMOMINU");
-
-        return true;
-    }
-
-    bool A_extension::Exec_A_AMOMAXU() const {
-        std::uint32_t mem_addr;
-        int rd, rs1, rs2;
-        std::uint32_t data;
-        std::uint32_t aux;
-
-        /* These instructions must be atomic */
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        mem_addr = regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-
-        regs->setValue(rd, static_cast<int32_t>(data));
-
-        // max
-        aux = regs->getValue(rs2);
-        if (data > aux) {
-            aux = data;
-        }
-
-        mem_intf->writeDataMem(mem_addr, aux, 4);
-        perf->dataMemoryWrite();
-
-        logger->debug("{} ns. PC: 0x{:x}. A.AMOMAXU");
-
-        return true;
-    }
-
-    void A_extension::TLB_reserve(std::uint32_t address) {
-        TLB_A_Entries.insert(address);
-    }
-
-    bool A_extension::TLB_reserved(std::uint32_t address) {
-        if (TLB_A_Entries.count(address) == 1) {
-            TLB_A_Entries.erase(address);
-            return true;
-        } else {
-            return false;
-        }
-    }
-
-    bool A_extension::process_instruction(Instruction &inst) {
-        bool PC_not_affected = true;
-
-        setInstr(inst.getInstr());
-
-        switch (decode()) {
-            case OP_A_LR:
-                Exec_A_LR();
-                break;
-            case OP_A_SC:
-                Exec_A_SC();
-                break;
-            case OP_A_AMOSWAP:
-                Exec_A_AMOSWAP();
-                break;
-            case OP_A_AMOADD:
-                Exec_A_AMOADD();
-                break;
-            case OP_A_AMOXOR:
-                Exec_A_AMOXOR();
-                break;
-            case OP_A_AMOAND:
-                Exec_A_AMOAND();
-                break;
-            case OP_A_AMOOR:
-                Exec_A_AMOOR();
-                break;
-            case OP_A_AMOMIN:
-                Exec_A_AMOMIN();
-                break;
-            case OP_A_AMOMAX:
-                Exec_A_AMOMAX();
-                break;
-            case OP_A_AMOMINU:
-                Exec_A_AMOMINU();
-                break;
-            case OP_A_AMOMAXU:
-                Exec_A_AMOMAXU();
-                break;
-                [[unlikely]] default:
-                std::cout << "A instruction not implemented yet" << std::endl;
-                inst.dump();
-                NOP();
-                break;
-        }
-
-        return PC_not_affected;
-    }
-}

src/CPU.cpp

@@ -11,37 +11,22 @@ namespace riscv_tlm {
 
     SC_HAS_PROCESS(CPU);
 
-    CPU::CPU(sc_core::sc_module_name const &name, std::uint32_t PC, bool debug) :
+    CPU::CPU(sc_core::sc_module_name const &name, bool debug) : sc_module(name), instr_bus("instr_bus"), inst(0), default_time(10, sc_core::SC_NS) {
-            sc_module(name), instr_bus("instr_bus"), inst(0), default_time(10,
-                                                                           sc_core::SC_NS), INSTR(0) {
-        register_bank = new Registers();
-        mem_intf = new MemoryInterface();
-
         perf = Performance::getInstance();
-
+        logger = spdlog::get("my_logger");
-        register_bank->setPC(PC);
-        register_bank->setValue(Registers::sp, (Memory::SIZE / 4) - 1);
-
-        irq_line_socket.register_b_transport(this, &CPU::call_interrupt);
-        interrupt = false;
-
-        int_cause = 0;
-        irq_already_down = false;
-
-        dmi_ptr_valid = false;
-        instr_bus.register_invalidate_direct_mem_ptr(this,
-                                                     &CPU::invalidate_direct_mem_ptr);
-
-        exec = new BASE_ISA(0, register_bank, mem_intf);
-        c_inst = new C_extension(0, register_bank, mem_intf);
-        m_inst = new M_extension(0, register_bank, mem_intf);
-        a_inst = new A_extension(0, register_bank, mem_intf);
 
         m_qk = new tlm_utils::tlm_quantumkeeper();
         m_qk->reset();
+        mem_intf = nullptr;
+        dmi_ptr_valid = false;
+
+        irq_already_down = false;
+        interrupt = false;
+
+        irq_line_socket.register_b_transport(this, &CPU::call_interrupt);
 
         trans.set_command(tlm::TLM_READ_COMMAND);
-        trans.set_data_ptr(reinterpret_cast<unsigned char *>(&INSTR));
+
         trans.set_data_length(4);
         trans.set_streaming_width(4); // = data_length to indicate no streaming
         trans.set_byte_enable_ptr(nullptr); // 0 indicates unused
@@ -51,147 +36,12 @@ namespace riscv_tlm {
         if (!debug) {
             SC_THREAD(CPU_thread);
         }
+    };
 
-        logger = spdlog::get("my_logger");
+    void CPU::invalidate_direct_mem_ptr(sc_dt::uint64 start, sc_dt::uint64 end) {
-    }
+        (void) start;
-
+        (void) end;
-    CPU::~CPU() {
+        dmi_ptr_valid = false;
-        delete register_bank;
-        delete mem_intf;
-        delete exec;
-        delete c_inst;
-        delete m_inst;
-        delete a_inst;
-        delete m_qk;
-    }
-
-    bool CPU::cpu_process_IRQ() {
-        std::uint32_t csr_temp;
-        bool ret_value = false;
-
-        if (interrupt) {
-            csr_temp = register_bank->getCSR(CSR_MSTATUS);
-            if ((csr_temp & MSTATUS_MIE) == 0) {
-                logger->debug("{} ns. PC: 0x{:x}. Interrupt delayed", sc_core::sc_time_stamp().value(),
-                              register_bank->getPC());
-
-                return ret_value;
-            }
-
-            csr_temp = register_bank->getCSR(CSR_MIP);
-
-            if ((csr_temp & MIP_MEIP) == 0) {
-                csr_temp |= MIP_MEIP;  // MEIP bit in MIP register (11th bit)
-                register_bank->setCSR(CSR_MIP, csr_temp);
-
-                logger->debug("{} ns. PC: 0x{:x}. Interrupt!", sc_core::sc_time_stamp().value(),
-                              register_bank->getPC());
-
-
-                /* updated MEPC register */
-                std::uint32_t old_pc = register_bank->getPC();
-                register_bank->setCSR(CSR_MEPC, old_pc);
-
-                logger->debug("{} ns. PC: 0x{:x}. Old PC Value 0x{:x}", sc_core::sc_time_stamp().value(),
-                              register_bank->getPC(),
-                              old_pc);
-
-                /* update MCAUSE register */
-                register_bank->setCSR(CSR_MCAUSE, 0x80000000);
-
-                /* set new PC address */
-                std::uint32_t new_pc = register_bank->getCSR(CSR_MTVEC);
-                //new_pc = new_pc & 0xFFFFFFFC; // last two bits always to 0
-                logger->debug("{} ns. PC: 0x{:x}. NEW PC Value 0x{:x}", sc_core::sc_time_stamp().value(),
-                              register_bank->getPC(),
-                              new_pc);
-                register_bank->setPC(new_pc);
-
-                ret_value = true;
-                interrupt = false;
-                irq_already_down = false;
-            }
-        } else {
-            if (!irq_already_down) {
-                csr_temp = register_bank->getCSR(CSR_MIP);
-                csr_temp &= ~MIP_MEIP;
-                register_bank->setCSR(CSR_MIP, csr_temp);
-                irq_already_down = true;
-            }
-        }
-
-        return ret_value;
-    }
-
-    bool CPU::CPU_step() {
-        bool PC_not_affected = false;
-
-        /* Get new PC value */
-        if (dmi_ptr_valid) {
-            /* if memory_offset at Memory module is set, this won't work */
-            std::memcpy(&INSTR, dmi_ptr + register_bank->getPC(), 4);
-        } else {
-            sc_core::sc_time delay = sc_core::SC_ZERO_TIME;
-            tlm::tlm_dmi dmi_data;
-            trans.set_address(register_bank->getPC());
-            instr_bus->b_transport(trans, delay);
-
-            if (trans.is_response_error()) {
-                SC_REPORT_ERROR("CPU base", "Read memory");
-            }
-
-            if (trans.is_dmi_allowed()) {
-                dmi_ptr_valid = instr_bus->get_direct_mem_ptr(trans, dmi_data);
-                if (dmi_ptr_valid) {
-                    std::cout << "Get DMI_PTR " << std::endl;
-                    dmi_ptr = dmi_data.get_dmi_ptr();
-                }
-            }
-        }
-
-        perf->codeMemoryRead();
-        inst.setInstr(INSTR);
-        bool breakpoint = false;
-
-        /* check what type of instruction is and execute it */
-        switch (inst.check_extension()) {
-            [[likely]] case BASE_EXTENSION:
-                PC_not_affected = exec->process_instruction(inst, &breakpoint);
-                if (PC_not_affected) {
-                    register_bank->incPC();
-                }
-                break;
-            case C_EXTENSION:
-                PC_not_affected = c_inst->process_instruction(inst, &breakpoint);
-                if (PC_not_affected) {
-                    register_bank->incPCby2();
-                }
-                break;
-            case M_EXTENSION:
-                PC_not_affected = m_inst->process_instruction(inst);
-                if (PC_not_affected) {
-                    register_bank->incPC();
-                }
-                break;
-            case A_EXTENSION:
-                PC_not_affected = a_inst->process_instruction(inst);
-                if (PC_not_affected) {
-                    register_bank->incPC();
-                }
-                break;
-                [[unlikely]] default:
-                std::cout << "Extension not implemented yet" << std::endl;
-                inst.dump();
-                exec->NOP();
-        }
-
-        if (breakpoint) {
-            std::cout << "Breakpoint set to true\n";
-        }
-
-        perf->instructionsInc();
-
-        return breakpoint;
     }
 
     [[noreturn]] void CPU::CPU_thread() {
@@ -219,18 +69,4 @@ namespace riscv_tlm {
 #endif
         } // while(1)
     } // CPU_thread
-
-    void CPU::call_interrupt(tlm::tlm_generic_payload &m_trans,
-                             sc_core::sc_time &delay) {
-        interrupt = true;
-        /* Socket caller send a cause (its id) */
-        memcpy(&int_cause, m_trans.get_data_ptr(), sizeof(std::uint32_t));
-        delay = sc_core::SC_ZERO_TIME;
-    }
-
-    void CPU::invalidate_direct_mem_ptr(sc_dt::uint64 start, sc_dt::uint64 end) {
-        (void) start;
-        (void) end;
-        dmi_ptr_valid = false;
-    }
 }

src/C_extension.cpp

@@ -5,749 +5,3 @@
  \date August 2018
 */
 #include "C_extension.h"
-
-namespace riscv_tlm {
-
-    op_C_Codes C_extension::decode() const {
-
-        switch (opcode()) {
-
-            case 0b00:
-                switch (get_funct3()) {
-                    case C_ADDI4SPN:
-                        return OP_C_ADDI4SPN;
-                        break;
-                    case C_FLD:
-                        return OP_C_FLD;
-                        break;
-                    case C_LW:
-                        return OP_C_LW;
-                        break;
-                    case C_FLW:
-                        return OP_C_FLW;
-                        break;
-                    case C_FSD:
-                        return OP_C_FSD;
-                        break;
-                    case C_SW:
-                        return OP_C_SW;
-                        break;
-                    case C_FSW:
-                        return OP_C_FSW;
-                        break;
-                        [[unlikely]] default:
-                        return OP_C_ERROR;
-                        break;
-                }
-                break;
-
-            case 0b01:
-                switch (get_funct3()) {
-                    case C_ADDI:
-                        return OP_C_ADDI;
-                        break;
-                    case C_JAL:
-                        return OP_C_JAL;
-                        break;
-                    case C_LI:
-                        return OP_C_LI;
-                        break;
-                    case C_ADDI16SP:
-                        return OP_C_ADDI16SP;
-                        break;
-                    case C_SRLI:
-                        switch (m_instr.range(11, 10)) {
-                            case C_2_SRLI:
-                                return OP_C_SRLI;
-                                break;
-                            case C_2_SRAI:
-                                return OP_C_SRAI;
-                                break;
-                            case C_2_ANDI:
-                                return OP_C_ANDI;
-                                break;
-                            case C_2_SUB:
-                                switch (m_instr.range(6, 5)) {
-                                    case C_3_SUB:
-                                        return OP_C_SUB;
-                                        break;
-                                    case C_3_XOR:
-                                        return OP_C_XOR;
-                                        break;
-                                    case C_3_OR:
-                                        return OP_C_OR;
-                                        break;
-                                    case C_3_AND:
-                                        return OP_C_AND;
-                                        break;
-                                }
-                        }
-                        break;
-                    case C_J:
-                        return OP_C_J;
-                        break;
-                    case C_BEQZ:
-                        return OP_C_BEQZ;
-                        break;
-                    case C_BNEZ:
-                        return OP_C_BNEZ;
-                        break;
-                        [[unlikely]] default:
-                        return OP_C_ERROR;
-                        break;
-                }
-                break;
-
-            case 0b10:
-                switch (get_funct3()) {
-                    case C_SLLI:
-                        return OP_C_SLLI;
-                        break;
-                    case C_FLDSP:
-                    case C_LWSP:
-                        return OP_C_LWSP;
-                        break;
-                    case C_FLWSP:
-                        return OP_C_FLWSP;
-                        break;
-                    case C_JR:
-                        if (m_instr[12] == 0) {
-                            if (m_instr.range(6, 2) == 0) {
-                                return OP_C_JR;
-                            } else {
-                                return OP_C_MV;
-                            }
-                        } else {
-                            if (m_instr.range(11, 2) == 0) {
-                                return OP_C_EBREAK;
-                            } else if (m_instr.range(6, 2) == 0) {
-                                return OP_C_JALR;
-                            } else {
-                                return OP_C_ADD;
-                            }
-                        }
-                        break;
-                    case C_FDSP:
-                        break;
-                    case C_SWSP:
-                        return OP_C_SWSP;
-                        break;
-                    case C_FWWSP:
-                        [[unlikely]]
-                    default:
-                        return OP_C_ERROR;
-                        break;
-                }
-                break;
-
-                [[unlikely]] default:
-
-                return OP_C_ERROR;
-                break;
-        }
-        return OP_C_ERROR;
-    }
-
-    bool C_extension::Exec_C_JR() {
-        std::uint32_t mem_addr;
-        int rs1;
-        int new_pc;
-
-        rs1 = get_rs1();
-        mem_addr = 0;
-
-        new_pc = static_cast<std::int32_t>(
-                static_cast<std::int32_t>((regs->getValue(rs1)) + static_cast<std::int32_t>(mem_addr)) & 0xFFFFFFFE);
-
-        logger->debug("{} ns. PC: 0x{:x}. C.JR: PC <- 0x{:x}", sc_core::sc_time_stamp().value(), regs->getPC(), new_pc);
-
-        regs->setPC(new_pc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_MV() {
-        int rd, rs1, rs2;
-        std::uint32_t calc;
-
-        rd = get_rd();
-        rs1 = 0;
-        rs2 = get_rs2();
-
-        calc = regs->getValue(rs1) + regs->getValue(rs2);
-        regs->setValue(rd, static_cast<std::int32_t>(calc));
-
-        logger->debug("{} ns. PC: 0x{:x}. C.MV: x{:d}(0x{:x}) + x{:d}(0x{:x}) -> x{:d}(0x{:x})",
-                      sc_core::sc_time_stamp().value(), regs->getPC(),
-                      rs1, regs->getValue(rs1), rs2, regs->getValue(rs2), rd, calc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_ADD() {
-        int rd, rs1, rs2;
-        std::uint32_t calc;
-
-        rd = get_rs1();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        calc = regs->getValue(rs1) + regs->getValue(rs2);
-        regs->setValue(rd, static_cast<std::int32_t>(calc));
-
-        logger->debug("{} ns. PC: 0x{:x}. C.ADD: x{:d} + x{} -> x{:d}(0x{:x})", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, rs2, rd, calc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_LWSP() {
-        std::uint32_t mem_addr;
-        int rd, rs1;
-        std::int32_t imm;
-        std::uint32_t data;
-
-        // lw rd, offset[7:2](x2)
-
-        rd = get_rd();
-        rs1 = 2;
-        imm = get_imm_LWSP();
-
-        mem_addr = imm + regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-        regs->setValue(rd, static_cast<std::int32_t>(data));
-
-        regs->setValue(rd, data);
-
-        logger->debug("{} ns. PC: 0x{:x}. C.LWSP: x{:d} + {:d}(@0x{:x}) -> x{:d}({:x})",
-                      sc_core::sc_time_stamp().value(), regs->getPC(),
-                      rs1, imm, mem_addr, rd, data);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_ADDI4SPN() {
-        int rd, rs1;
-        std::int32_t imm;
-        std::int32_t calc;
-
-        rd = get_rdp();
-        rs1 = 2;
-        imm = get_imm_ADDI4SPN();
-
-        if (imm == 0) {
-            RaiseException(EXCEPTION_CAUSE_ILLEGAL_INSTRUCTION, m_instr);
-            return false;
-        }
-
-        calc = static_cast<std::int32_t>(regs->getValue(rs1)) + imm;
-        regs->setValue(rd, calc);
-
-        logger->debug("{} ns. PC: 0x{:x}. C.ADDI4SN: x{:d} + (0x{:x}) + {:d} -> x{:d}(0x{:x})",
-                      sc_core::sc_time_stamp().value(), regs->getPC(),
-                      rs1, regs->getValue(rs1), imm, rd, calc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_ADDI16SP() {
-        // addi x2, x2, nzimm[9:4]
-        int rd;
-        std::int32_t imm;
-
-        if (get_rd() == 2) {
-            int rs1;
-            std::int32_t calc;
-
-            rd = 2;
-            rs1 = 2;
-            imm = get_imm_ADDI16SP();
-
-            calc = static_cast<std::int32_t>(regs->getValue(rs1)) + imm;
-            regs->setValue(rd, calc);
-
-            logger->debug("{} ns. PC: 0x{:x}. C.ADDI16SP: x{:d} + {:d} -> x{:d} (0x{:x})",
-                          sc_core::sc_time_stamp().value(), regs->getPC(),
-                          rs1, imm, rd, calc);
-        } else {
-            /* C.LUI OPCODE */
-            rd = get_rd();
-            imm = get_imm_LUI();
-            regs->setValue(rd, imm);
-
-            logger->debug("{} ns. PC: 0x{:x}. C.LUI: x{:d} <- 0x{:x}", sc_core::sc_time_stamp().value(), regs->getPC(),
-                          rd, imm);
-        }
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_SWSP() {
-        // sw rs2, offset(x2)
-        std::uint32_t mem_addr;
-        int rs1, rs2;
-        std::int32_t imm;
-        std::uint32_t data;
-
-        rs1 = 2;
-        rs2 = get_rs2();
-        imm = get_imm_CSS();
-
-        mem_addr = imm + regs->getValue(rs1);
-        data = regs->getValue(rs2);
-
-        mem_intf->writeDataMem(mem_addr, data, 4);
-        perf->dataMemoryWrite();
-
-        logger->debug("{} ns. PC: 0x{:x}. C.SWSP: x{:d}(0x{:x}) -> x{:d} + {} (@0x{:x})",
-                      sc_core::sc_time_stamp().value(), regs->getPC(),
-                      rs2, data, rs1, imm, mem_addr);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_BEQZ() {
-        int rs1;
-        int new_pc;
-        std::uint32_t val1;
-
-        rs1 = get_rs1p();
-        val1 = regs->getValue(rs1);
-
-        if (val1 == 0) {
-            new_pc = static_cast<std::int32_t>(regs->getPC()) + get_imm_CB();
-            regs->setPC(new_pc);
-        } else {
-            regs->incPCby2();
-            new_pc = static_cast<std::int32_t>(regs->getPC());
-        }
-
-        logger->debug("{} ns. PC: 0x{:x}. C.BEQZ: x{:d}(0x{:x}) == 0? -> PC (0xx{:d})",
-                      sc_core::sc_time_stamp().value(), regs->getPC(),
-                      rs1, val1, new_pc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_BNEZ() {
-        int rs1;
-        int new_pc;
-        std::uint32_t val1;
-
-        rs1 = get_rs1p();
-        val1 = regs->getValue(rs1);
-
-        if (val1 != 0) {
-            new_pc = static_cast<std::int32_t>(regs->getPC()) + get_imm_CB();
-            regs->setPC(new_pc);
-        } else {
-            regs->incPCby2(); //PC <- PC +2
-            new_pc = static_cast<std::int32_t>(regs->getPC());
-        }
-
-        logger->debug("{} ns. PC: 0x{:x}. C.BNEZ: x{:d}(0x{:x}) != 0? -> PC (0xx{:d})",
-                      sc_core::sc_time_stamp().value(), regs->getPC(),
-                      rs1, val1, new_pc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_LI() {
-        int rd, rs1;
-        std::int32_t imm;
-        std::int32_t calc;
-
-        rd = get_rd();
-        rs1 = 0;
-        imm = get_imm_ADDI();
-
-        calc = static_cast<std::int32_t>(regs->getValue(rs1)) + imm;
-        regs->setValue(rd, calc);
-
-        logger->debug("{} ns. PC: 0x{:x}. C.LI: x{:d} ({:d}) + {:d} -> x{:d}(0x{:x}) ",
-                      sc_core::sc_time_stamp().value(), regs->getPC(),
-                      rs1, regs->getValue(rs1), imm, rd, calc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_SRLI() {
-        int rd, rs1, rs2;
-        std::uint32_t shift;
-        std::uint32_t calc;
-
-        rd = get_rs1p();
-        rs1 = get_rs1p();
-        rs2 = get_rs2();
-
-        shift = rs2 & 0x1F;
-
-        calc = static_cast<std::uint32_t>(regs->getValue(rs1)) >> shift;
-        regs->setValue(rd, static_cast<std::int32_t>(calc));
-
-        logger->debug("{} ns. PC: 0x{:x}. C.SRLI: x{:d} >> {} -> x{:d}", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, shift, rd);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_SRAI() {
-        int rd, rs1, rs2;
-        std::uint32_t shift;
-        std::int32_t calc;
-
-        rd = get_rs1p();
-        rs1 = get_rs1p();
-        rs2 = get_rs2();
-
-        shift = rs2 & 0x1F;
-
-        calc = static_cast<std::int32_t>(regs->getValue(rs1)) >> shift;
-        regs->setValue(rd, calc);
-
-        logger->debug("{} ns. PC: 0x{:x}. C.SRAI: x{:d} >> {} -> x{:d}(0x{:x})", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, shift, rd, calc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_SLLI() {
-        int rd, rs1, rs2;
-        std::uint32_t shift;
-        std::uint32_t calc;
-
-        rd = get_rs1p();
-        rs1 = get_rs1p();
-        rs2 = get_imm_ADDI();
-
-        shift = rs2 & 0x1F;
-
-        calc = static_cast<std::uint32_t>(regs->getValue(rs1)) << shift;
-        regs->setValue(rd, static_cast<std::int32_t>(calc));
-
-        logger->debug("{} ns. PC: 0x{:x}. C.SLLI: x{:d} << {} -> x{:d}(0x{:x})", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, shift, rd, calc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_ANDI() {
-        int rd, rs1;
-        std::uint32_t imm;
-        std::uint32_t aux;
-        std::uint32_t calc;
-
-        rd = get_rs1p();
-        rs1 = get_rs1p();
-        imm = get_imm_ADDI();
-
-        aux = regs->getValue(rs1);
-        calc = aux & imm;
-        regs->setValue(rd, static_cast<std::int32_t>(calc));
-
-        logger->debug("{} ns. PC: 0x{:x}. C.ANDI: x{:d}(0x{:x}) AND 0x{:x} -> x{:d}", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, aux, imm, rd);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_SUB() {
-        int rd, rs1, rs2;
-        std::uint32_t calc;
-
-        rd = get_rs1p();
-        rs1 = get_rs1p();
-        rs2 = get_rs2p();
-
-        calc = regs->getValue(rs1) - regs->getValue(rs2);
-        regs->setValue(rd, static_cast<std::int32_t>(calc));
-
-        logger->debug("{} ns. PC: 0x{:x}. C.SUB: x{:d} - x{:d} -> x{:d}(0x{:x})", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, rs2, rd, calc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_XOR() {
-        int rd, rs1, rs2;
-        std::uint32_t calc;
-
-        rd = get_rs1p();
-        rs1 = get_rs1p();
-        rs2 = get_rs2p();
-
-        calc = regs->getValue(rs1) ^ regs->getValue(rs2);
-        regs->setValue(rd, static_cast<std::int32_t>(calc));
-
-        logger->debug("{} ns. PC: 0x{:x}. C.XOR: x{:d} XOR x{:d} -> x{:d}", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, rs2, rd);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_OR() {
-        int rd, rs1, rs2;
-        std::uint32_t calc;
-
-        rd = get_rs1p();
-        rs1 = get_rs1p();
-        rs2 = get_rs2p();
-
-        calc = regs->getValue(rs1) | regs->getValue(rs2);
-        regs->setValue(rd, static_cast<std::int32_t>(calc));
-
-        logger->debug("{} ns. PC: 0x{:x}. C.OR: x{:d} OR x{:d} -> x{:d}", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, rs2, rd);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_AND() {
-        int rd, rs1, rs2;
-        std::uint32_t calc;
-
-        rd = get_rs1p();
-        rs1 = get_rs1p();
-        rs2 = get_rs2p();
-
-        calc = regs->getValue(rs1) & regs->getValue(rs2);
-        regs->setValue(rd, static_cast<std::int32_t>(calc));
-
-        logger->debug("{} ns. PC: 0x{:x}. C.AND: x{:d} AND x{:d} -> x{:d}", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, rs2, rd);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_ADDI() const {
-        int rd, rs1;
-        std::int32_t imm;
-        std::int32_t calc;
-
-        rd = get_rd();
-        rs1 = rd;
-        imm = get_imm_ADDI();
-
-        calc = static_cast<std::int32_t>(regs->getValue(rs1)) + imm;
-        regs->setValue(rd, calc);
-
-        logger->debug("{} ns. PC: 0x{:x}. C.ADDI: x{:d} + {} -> x{:d}(0x{:x})", sc_core::sc_time_stamp().value(),
-                      regs->getPC(), rs1, imm, rd, calc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_JALR() {
-        std::uint32_t mem_addr = 0;
-        int rd, rs1;
-        int new_pc, old_pc;
-
-        rd = 1;
-        rs1 = get_rs1();
-
-        old_pc = static_cast<std::int32_t>(regs->getPC());
-        regs->setValue(rd, old_pc + 2);
-
-        new_pc = static_cast<std::int32_t>((regs->getValue(rs1) + mem_addr) & 0xFFFFFFFE);
-        regs->setPC(new_pc);
-
-        logger->debug("{} ns. PC: 0x{:x}. C.JALR: x{:d} <- 0x{:x} PC <- 0xx{:x}", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rd, old_pc + 4, new_pc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_LW() {
-        std::uint32_t mem_addr;
-        int rd, rs1;
-        std::int32_t imm;
-        std::uint32_t data;
-
-        rd = get_rdp();
-        rs1 = get_rs1p();
-        imm = get_imm_L();
-
-        mem_addr = imm + regs->getValue(rs1);
-        data = mem_intf->readDataMem(mem_addr, 4);
-        perf->dataMemoryRead();
-        regs->setValue(rd, static_cast<std::int32_t>(data));
-
-        logger->debug("{} ns. PC: 0x{:x}. C.LW: x{:d}(0x{:x}) + {:d} (@0x{:x}) -> {:d} (0x{:x})",
-                      sc_core::sc_time_stamp().value(), regs->getPC(),
-                      rs1, regs->getValue(rs1), imm, mem_addr, rd, data);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_SW() {
-        std::uint32_t mem_addr;
-        int rs1, rs2;
-        std::int32_t imm;
-        std::uint32_t data;
-
-        rs1 = get_rs1p();
-        rs2 = get_rs2p();
-        imm = get_imm_L();
-
-        mem_addr = imm + regs->getValue(rs1);
-        data = regs->getValue(rs2);
-
-        mem_intf->writeDataMem(mem_addr, data, 4);
-        perf->dataMemoryWrite();
-
-        logger->debug("{} ns. PC: 0x{:x}. C.SW: x{:d}(0x{:x}) -> x{:d} + 0x{:x}(@0x{:x})",
-                      sc_core::sc_time_stamp().value(), regs->getPC(),
-                      rs2, data, rs1, imm, mem_addr);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_JAL(int m_rd) {
-        std::int32_t mem_addr;
-        int rd;
-        int new_pc, old_pc;
-
-        rd = m_rd;
-        mem_addr = get_imm_J();
-        old_pc = static_cast<std::int32_t>(regs->getPC());
-
-        new_pc = old_pc + mem_addr;
-        regs->setPC(new_pc);
-
-        old_pc = old_pc + 2;
-        regs->setValue(rd, old_pc);
-
-        logger->debug("{} ns. PC: 0x{:x}. C.JAL: x{:d} <- 0x{:x}. PC + 0x{:x} -> PC (0x{:x})",
-                      sc_core::sc_time_stamp().value(), regs->getPC(),
-                      rd, old_pc, mem_addr, new_pc);
-
-        return true;
-    }
-
-    bool C_extension::Exec_C_EBREAK() {
-
-        logger->debug("C.EBREAK");
-        std::cout << "\n" << "C.EBRAK  Instruction called, dumping information"
-                  << "\n";
-        regs->dump();
-        std::cout << "Simulation time " << sc_core::sc_time_stamp() << "\n";
-        perf->dump();
-
-        sc_core::sc_stop();
-
-        return true;
-    }
-
-    bool C_extension::process_instruction(Instruction &inst, bool *breakpoint) {
-        bool PC_not_affected = true;
-
-        *breakpoint = false;
-
-        setInstr(inst.getInstr());
-
-        switch (decode()) {
-            case OP_C_ADDI4SPN:
-                PC_not_affected = Exec_C_ADDI4SPN();
-                break;
-            case OP_C_LW:
-                Exec_C_LW();
-                break;
-            case OP_C_SW:
-                Exec_C_SW();
-                break;
-            case OP_C_ADDI:
-                Exec_C_ADDI();
-                break;
-            case OP_C_JAL:
-                Exec_C_JAL(1);
-                PC_not_affected = false;
-                break;
-            case OP_C_J:
-                Exec_C_JAL(0);
-                PC_not_affected = false;
-                break;
-            case OP_C_LI:
-                Exec_C_LI();
-                break;
-            case OP_C_SLLI:
-                Exec_C_SLLI();
-                break;
-            case OP_C_LWSP:
-                Exec_C_LWSP();
-                break;
-            case OP_C_JR:
-                Exec_C_JR();
-                PC_not_affected = false;
-                break;
-            case OP_C_MV:
-                Exec_C_MV();
-                break;
-            case OP_C_JALR:
-                Exec_C_JALR();
-                PC_not_affected = false;
-                break;
-            case OP_C_ADD:
-                Exec_C_ADD();
-                break;
-            case OP_C_SWSP:
-                Exec_C_SWSP();
-                break;
-            case OP_C_ADDI16SP:
-                Exec_C_ADDI16SP();
-                break;
-            case OP_C_BEQZ:
-                Exec_C_BEQZ();
-                PC_not_affected = false;
-                break;
-            case OP_C_BNEZ:
-                Exec_C_BNEZ();
-                PC_not_affected = false;
-                break;
-            case OP_C_SRLI:
-                Exec_C_SRLI();
-                break;
-            case OP_C_SRAI:
-                Exec_C_SRAI();
-                break;
-            case OP_C_ANDI:
-                Exec_C_ANDI();
-                break;
-            case OP_C_SUB:
-                Exec_C_SUB();
-                break;
-            case OP_C_XOR:
-                Exec_C_XOR();
-                break;
-            case OP_C_OR:
-                Exec_C_OR();
-                break;
-            case OP_C_AND:
-                Exec_C_AND();
-                break;
-            case OP_C_EBREAK:
-                Exec_C_EBREAK();
-                std::cout << "C_EBREAK" << std::endl;
-                *breakpoint = true;
-                break;
-                [[unlikely]] default:
-                std::cout << "C instruction not implemented yet" << "\n";
-                inst.dump();
-                NOP();
-                break;
-        }
-
-        return PC_not_affected;
-    }
-
-}

src/Debug.cpp

@@ -23,7 +23,7 @@ namespace riscv_tlm {
     constexpr char nibble_to_hex[16] = {'0', '1', '2', '3', '4', '5', '6', '7',
                                         '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
 
-    Debug::Debug(riscv_tlm::CPU *cpu, Memory *mem) : sc_module(sc_core::sc_module_name("Debug")) {
+    Debug::Debug(riscv_tlm::RV32 *cpu, Memory *mem) : sc_module(sc_core::sc_module_name("Debug")) {
         dbg_cpu = cpu;
         dbg_mem = mem;
 
@@ -77,7 +77,7 @@ namespace riscv_tlm {
     void Debug::handle_gdb_loop() {
         std::cout << "Handle_GDB_Loop\n";
 
-        Registers *register_bank = dbg_cpu->getRegisterBank();
+        Registers<std::uint32_t> *register_bank = dbg_cpu->getRegisterBank();
 
         while (true) {
             std::string msg = receive_packet();
@@ -120,7 +120,7 @@ namespace riscv_tlm {
                 send_packet(conn, stream.str());
             } else if (boost::starts_with(msg, "p")) {
                 long n = strtol(msg.c_str() + 1, 0, 16);
-                unsigned int reg_value;
+                std::uint64_t reg_value;
                 if (n < 32) {
                     reg_value = register_bank->getValue(n);
                 } else if (n == 32) {

src/Instruction.cpp

@@ -15,7 +15,7 @@ namespace riscv_tlm {
     }
 
     extension_t Instruction::check_extension() const {
-        if (((m_instr & 0x0000007F) == 0b0110011)
+        if ((((m_instr & 0x0000007F) == 0b0110011) || ((m_instr & 0x0000007F) == 0b0111011))
             && (((m_instr & 0x7F000000) >> 25) == 0b0000001)) {
             return M_EXTENSION;
         } else if ((m_instr & 0x0000007F) == 0b0101111) {

src/M_extension.cpp

@@ -7,293 +7,162 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "M_extension.h"
-
 namespace riscv_tlm {
-
+    // RV32
-    op_M_Codes M_extension::decode() const {
+    template<>
-
+    void M_extension<std::uint32_t>::Exec_M_MULH() const {
-        switch (opcode()) {
+        unsigned int rd, rs1, rs2;
-            case M_MUL:
+        signed_T multiplier, multiplicand;
-                return OP_M_MUL;
-                break;
-            case M_MULH:
-                return OP_M_MULH;
-                break;
-            case M_MULHSU:
-                return OP_M_MULHSU;
-                break;
-            case M_MULHU:
-                return OP_M_MULHU;
-                break;
-            case M_DIV:
-                return OP_M_DIV;
-                break;
-            case M_DIVU:
-                return OP_M_DIVU;
-                break;
-            case M_REM:
-                return OP_M_REM;
-                break;
-            case M_REMU:
-                return OP_M_REMU;
-                break;
-                [[unlikely]] default:
-                return OP_M_ERROR;
-                break;
-        }
-
-        return OP_M_ERROR;
-    }
-
-    bool M_extension::Exec_M_MUL() const {
-        int rd, rs1, rs2;
-        std::int32_t multiplier, multiplicand;
         std::int64_t result;
+        signed_T ret_value;
 
-        rd = get_rd();
+        rd = this->get_rd();
-        rs1 = get_rs1();
+        rs1 = this->get_rs1();
-        rs2 = get_rs2();
+        rs2 = this->get_rs2();
 
-        multiplier = static_cast<std::int32_t>(regs->getValue(rs1));
+        multiplier = this->regs->getValue(rs1);
-        multiplicand = static_cast<std::int32_t>(regs->getValue(rs2));
+        multiplicand = this->regs->getValue(rs2);
 
-        result = static_cast<std::int64_t>(multiplier * multiplicand);
-        result = result & 0x00000000FFFFFFFF;
-        regs->setValue(rd, static_cast<std::int32_t>(result));
-
-        logger->debug("{} ns. PC: 0x{:x}. M.MUL: x{:d} * x{:d} -> x{:d}({:d})", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, rs2, rd, result);
-
-        return true;
-    }
-
-    bool M_extension::Exec_M_MULH() const {
-        int rd, rs1, rs2;
-        std::int32_t multiplier, multiplicand;
-        std::int64_t result;
-        std::int32_t ret_value;
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        multiplier = static_cast<std::int32_t>(regs->getValue(rs1));
-        multiplicand = static_cast<std::int32_t>(regs->getValue(rs2));
 
         result = static_cast<std::int64_t>(multiplier) * static_cast<std::int64_t>(multiplicand);
-
         ret_value = static_cast<std::int32_t>((result >> 32) & 0x00000000FFFFFFFF);
-        regs->setValue(rd, ret_value);
 
-        logger->debug("{} ns. PC: 0x{:x}. M.MULH: x{:d} * x{:d} -> x{:d}({:d})", sc_core::sc_time_stamp().value(),
+        this->regs->setValue(rd, ret_value);
-                      regs->getPC(),
-                      rs1, rs2, rd, result);
 
-        return true;
+        this->logger->debug("{} ns. PC: 0x{:x}. M.MULH: x{:d}({:d}) * x{:d}({:d}) -> x{:d}({:d})",
+                            sc_core::sc_time_stamp().value(),
+                            this->regs->getPC(),
+                            rs1, multiplier, rs2, multiplicand, rd, result);
     }
 
-    bool M_extension::Exec_M_MULHSU() const {
+    template<>
-        int rd, rs1, rs2;
+    void M_extension<std::uint32_t>::Exec_M_MULHSU() const {
+        unsigned int rd, rs1, rs2;
         std::int32_t multiplier;
         std::uint32_t multiplicand;
         std::int64_t result;
 
-        rd = get_rd();
+        rd = this->get_rd();
-        rs1 = get_rs1();
+        rs1 = this->get_rs1();
-        rs2 = get_rs2();
+        rs2 = this->get_rs2();
 
-        multiplier = static_cast<std::int32_t>(regs->getValue(rs1));
+        multiplier = static_cast<std::int32_t>(this->regs->getValue(rs1));
-        multiplicand = regs->getValue(rs2);
+        multiplicand = this->regs->getValue(rs2);
 
         result = static_cast<std::int64_t>(multiplier * static_cast<std::uint64_t>(multiplicand));
         result = (result >> 32) & 0x00000000FFFFFFFF;
-        regs->setValue(rd, static_cast<std::int32_t>(result));
+        this->regs->setValue(rd, static_cast<std::int32_t>(result));
 
-        logger->debug("{} ns. PC: 0x{:x}. M.MULHSU: x{:d} * x{:d} -> x{:d}({:d})", sc_core::sc_time_stamp().value(),
+        this->logger->debug("{} ns. PC: 0x{:x}. M.MULHSU: x{:d} * x{:d} -> x{:d}({:d})",
-                      regs->getPC(),
+                            sc_core::sc_time_stamp().value(),
-                      rs1, rs2, rd, result);
+                            this->regs->getPC(),
-
+                            rs1, rs2, rd, result);
-        return true;
     }
 
-    bool M_extension::Exec_M_MULHU() const {
+    template<>
-        int rd, rs1, rs2;
+    void M_extension<std::uint32_t>::Exec_M_MULHU() const {
+        unsigned int rd, rs1, rs2;
         std::uint32_t multiplier, multiplicand;
         std::uint64_t result;
         std::int32_t ret_value;
 
-        rd = get_rd();
+        rd = this->get_rd();
-        rs1 = get_rs1();
+        rs1 = this->get_rs1();
-        rs2 = get_rs2();
+        rs2 = this->get_rs2();
 
-        multiplier = static_cast<std::int32_t>(regs->getValue(rs1));
+        multiplier = static_cast<std::int32_t>(this->regs->getValue(rs1));
-        multiplicand = static_cast<std::int32_t>(regs->getValue(rs2));
+        multiplicand = static_cast<std::int32_t>(this->regs->getValue(rs2));
 
         result = static_cast<std::uint64_t>(multiplier) * static_cast<std::uint64_t>(multiplicand);
         ret_value = static_cast<std::int32_t>((result >> 32) & 0x00000000FFFFFFFF);
-        regs->setValue(rd, ret_value);
+        this->regs->setValue(rd, ret_value);
 
-        logger->debug("{} ns. PC: 0x{:x}. M.MULHU: x{:d} * x{:d} -> x{:d}({:d})", sc_core::sc_time_stamp().value(),
+        this->logger->debug("{} ns. PC: 0x{:x}. M.MULHU: x{:d} * x{:d} -> x{:d}({:d})",
-                      regs->getPC(),
+                            sc_core::sc_time_stamp().value(),
-                      rs1, rs2, rd, result);
+                            this->regs->getPC(),
-
+                            rs1, rs2, rd, result);
-        return true;
     }
 
-    bool M_extension::Exec_M_DIV() const {
-        int rd, rs1, rs2;
-        std::int32_t divisor, dividend;
-        std::int64_t result;
 
-        rd = get_rd();
+    // RV64
-        rs1 = get_rs1();
+    // I need to use SystemC bigint with 128 bits to perform 64 x 64 bits multiplication and keep the high half
-        rs2 = get_rs2();
+    template<>
+    void M_extension<std::uint64_t>::Exec_M_MULH() const {
+        unsigned int rd, rs1, rs2;
+        signed_T multiplier, multiplicand;
+        signed_T result;
 
-        dividend = static_cast<std::int32_t>(regs->getValue(rs1));
+        rd = this->get_rd();
-        divisor = static_cast<std::int32_t>(regs->getValue(rs2));
+        rs1 = this->get_rs1();
+        rs2 = this->get_rs2();
 
-        if (divisor == 0) {
+        multiplier = this->regs->getValue(rs1);
-            result = -1;
+        multiplicand = this->regs->getValue(rs2);
-        } else if ((divisor == -1) && (dividend == static_cast<std::int32_t>(0x80000000))) {
-            result = 0x0000000080000000;
-        } else {
-            result = dividend / divisor;
-            result = result & 0x00000000FFFFFFFF;
-        }
 
-        regs->setValue(rd, static_cast<std::int32_t>(result));
+        sc_dt::sc_bigint<128> mul = multiplier;
+        sc_dt::sc_bigint<128> muld = multiplicand;
+        sc_dt::sc_bigint<128> res = mul * muld;
+        result = res.range(127, 64).to_int64();
 
-        logger->debug("{} ns. PC: 0x{:x}. M.DIV: x{:d} / x{:d} -> x{:d}({:d})", sc_core::sc_time_stamp().value(),
+        this->regs->setValue(rd, result);
-                      regs->getPC(),
-                      rs1, rs2, rd, result);
 
-        return true;
+        this->logger->debug("{} ns. PC: 0x{:x}. M.MULH: x{:d}({:d}) * x{:d}({:d}) -> x{:d}({:d})",
+                            sc_core::sc_time_stamp().value(),
+                            this->regs->getPC(),
+                            rs1, multiplier, rs2, multiplicand, rd, result);
     }
 
-    bool M_extension::Exec_M_DIVU() const {
+    template<>
-        int rd, rs1, rs2;
+    void M_extension<std::uint64_t>::Exec_M_MULHSU() const {
-        std::uint32_t divisor, dividend;
+        unsigned int rd, rs1, rs2;
-        std::uint64_t result;
+        signed_T multiplier;
+        unsigned_T multiplicand;
+        signed_T result;
 
-        rd = get_rd();
+        rd = this->get_rd();
-        rs1 = get_rs1();
+        rs1 = this->get_rs1();
-        rs2 = get_rs2();
+        rs2 = this->get_rs2();
 
-        dividend = regs->getValue(rs1);
+        multiplier = this->regs->getValue(rs1);
-        divisor = regs->getValue(rs2);
+        multiplicand = this->regs->getValue(rs2);
 
-        if (divisor == 0) {
+        sc_dt::sc_bigint<128> mul = multiplier;
-            result = -1;
+        sc_dt::sc_bigint<128> muld = multiplicand;
-        } else {
+        sc_dt::sc_bigint<128> res = mul * muld;
-            result = dividend / divisor;
+        result = res.range(127, 64).to_int64();
-            result = result & 0x00000000FFFFFFFF;
-        }
 
-        regs->setValue(rd, static_cast<std::int32_t>(result));
+        this->regs->setValue(rd, result);
 
-        logger->debug("{} ns. PC: 0x{:x}. M.DIVU: x{:d} / x{:d} -> x{:d}({:d})", sc_core::sc_time_stamp().value(),
+        this->logger->debug("{} ns. PC: 0x{:x}. M.MULHSU: x{:d} * x{:d} -> x{:d}({:d})",
-                      regs->getPC(),
+                            sc_core::sc_time_stamp().value(),
-                      rs1, rs2, rd, result);
+                            this->regs->getPC(),
-
+                            rs1, rs2, rd, result);
-        return true;
     }
 
-    bool M_extension::Exec_M_REM() const {
+    template<>
-        int rd, rs1, rs2;
+    void M_extension<std::uint64_t>::Exec_M_MULHU() const {
-        std::int32_t divisor, dividend;
+        unsigned int rd, rs1, rs2;
-        std::int32_t result;
+        unsigned_T multiplier, multiplicand;
+        unsigned_T result;
 
-        rd = get_rd();
+        rd = this->get_rd();
-        rs1 = get_rs1();
+        rs1 = this->get_rs1();
-        rs2 = get_rs2();
+        rs2 = this->get_rs2();
 
-        dividend = static_cast<std::int32_t>(regs->getValue(rs1));
+        multiplier = this->regs->getValue(rs1);
-        divisor = static_cast<std::int32_t>(regs->getValue(rs2));
+        multiplicand = this->regs->getValue(rs2);
 
-        if (divisor == 0) {
+        sc_dt::sc_bigint<128> mul = multiplier;
-            result = dividend;
+        sc_dt::sc_bigint<128> muld = multiplicand;
-        } else if ((divisor == -1) && (dividend == static_cast<std::int32_t>(0x80000000))) {
+        sc_dt::sc_bigint<128> res = mul * muld;
-            result = 0;
+        result = res.range(127, 64).to_uint64();
-        } else {
-            result = dividend % divisor;
-        }
 
-        regs->setValue(rd, result);
+        this->regs->setValue(rd, result);
 
-        logger->debug("{} ns. PC: 0x{:x}. M.REM: x{:d} / x{:d} -> x{:d}({:d})", sc_core::sc_time_stamp().value(),
+        this->logger->debug("{} ns. PC: 0x{:x}. M.MULHU: x{:d} * x{:d} -> x{:d}({:d})",
-                      regs->getPC(),
+                            sc_core::sc_time_stamp().value(),
-                      rs1, rs2, rd, result);
+                            this->regs->getPC(),
-
+                            rs1, rs2, rd, result);
-        return true;
-    }
-
-    bool M_extension::Exec_M_REMU() const {
-        int rd, rs1, rs2;
-        std::uint32_t divisor, dividend;
-        std::uint32_t result;
-
-        rd = get_rd();
-        rs1 = get_rs1();
-        rs2 = get_rs2();
-
-        dividend = static_cast<std::int32_t>(regs->getValue(rs1));
-        divisor = static_cast<std::int32_t>(regs->getValue(rs2));
-
-        if (divisor == 0) {
-            result = dividend;
-        } else {
-            result = dividend % divisor;
-        }
-
-        regs->setValue(rd, static_cast<std::int32_t>(result));
-
-        logger->debug("{} ns. PC: 0x{:x}. M.REMU: x{:d} / x{:d} -> x{:d}({:d})", sc_core::sc_time_stamp().value(),
-                      regs->getPC(),
-                      rs1, rs2, rd, result);
-
-        return true;
-    }
-
-    bool M_extension::process_instruction(Instruction &inst) {
-        bool PC_not_affected = true;
-
-        setInstr(inst.getInstr());
-
-        switch (decode()) {
-            case OP_M_MUL:
-                Exec_M_MUL();
-                break;
-            case OP_M_MULH:
-                Exec_M_MULH();
-                break;
-            case OP_M_MULHSU:
-                Exec_M_MULHSU();
-                break;
-            case OP_M_MULHU:
-                Exec_M_MULHU();
-                break;
-            case OP_M_DIV:
-                Exec_M_DIV();
-                break;
-            case OP_M_DIVU:
-                Exec_M_DIVU();
-                break;
-            case OP_M_REM:
-                Exec_M_REM();
-                break;
-            case OP_M_REMU:
-                Exec_M_REMU();
-                break;
-                [[unlikely]] default:
-                std::cout << "M instruction not implemented yet" << "\n";
-                inst.dump();
-                //NOP(inst);
-                sc_core::sc_stop();
-                break;
-        }
-
-        return PC_not_affected;
     }
 
 }

src/MemoryInterface.cpp

@@ -7,6 +7,8 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "MemoryInterface.h"
+#include <iostream>
+#include <sstream>
 
 namespace riscv_tlm {
 
@@ -36,8 +38,11 @@ namespace riscv_tlm {
         data_bus->b_transport(trans, delay);
 
         if (trans.is_response_error()) {
-            SC_REPORT_ERROR("Memory", "Read memory");
+            std::stringstream error_msg;
+            error_msg << "Read memory: 0x" << std::hex << addr;
+            SC_REPORT_ERROR("Memory", error_msg.str().c_str());
         }
+
         return data;
     }
 
@@ -62,5 +67,11 @@ namespace riscv_tlm {
         trans.set_address(addr);
 
         data_bus->b_transport(trans, delay);
+
+        if (trans.is_response_error()) {
+            std::stringstream error_msg;
+            error_msg << "Write memory: 0x" << std::hex << addr;
+            SC_REPORT_ERROR("Memory", error_msg.str().c_str());
+        }
     }
 }

src/RV32.cpp

@@ -0,0 +1,193 @@
+/*!
+ \file CPU.cpp
+ \brief Main CPU class
+ \author Màrius Montón
+ \date August 2018
+ */
+// SPDX-License-Identifier: GPL-3.0-or-later
+#include "CPU.h"
+
+namespace riscv_tlm {
+
+    SC_HAS_PROCESS(RV32);
+
+    RV32::RV32(sc_core::sc_module_name const &name, BaseType PC, bool debug) :
+            CPU(name, debug), INSTR(0) {
+
+        register_bank = new Registers<BaseType>();
+        mem_intf = new MemoryInterface();
+        register_bank->setPC(PC);
+        register_bank->setValue(Registers<BaseType>::sp, (Memory::SIZE / 4) - 1);
+
+        int_cause = 0;
+
+        instr_bus.register_invalidate_direct_mem_ptr(this,
+                                                     &RV32::invalidate_direct_mem_ptr);
+
+        exec = new BASE_ISA<BaseType>(0, register_bank, mem_intf);
+        c_inst = new C_extension<BaseType>(0, register_bank, mem_intf);
+        m_inst = new M_extension<BaseType>(0, register_bank, mem_intf);
+        a_inst = new A_extension<BaseType>(0, register_bank, mem_intf);
+
+        trans.set_data_ptr(reinterpret_cast<unsigned char *>(&INSTR));
+
+        logger->info("Created RV32 CPU");
+        std::cout << "Created RV32 CPU" << std::endl;
+    }
+
+    RV32::~RV32() {
+        delete register_bank;
+        delete mem_intf;
+        delete exec;
+        delete c_inst;
+        delete m_inst;
+        delete a_inst;
+        delete m_qk;
+    }
+
+    bool RV32::cpu_process_IRQ() {
+        BaseType csr_temp;
+        bool ret_value = false;
+
+        if (interrupt) {
+            csr_temp = register_bank->getCSR(CSR_MSTATUS);
+            if ((csr_temp & MSTATUS_MIE) == 0) {
+                logger->debug("{} ns. PC: 0x{:x}. Interrupt delayed", sc_core::sc_time_stamp().value(),
+                              register_bank->getPC());
+
+                return ret_value;
+            }
+
+            csr_temp = register_bank->getCSR(CSR_MIP);
+
+            if ((csr_temp & MIP_MEIP) == 0) {
+                csr_temp |= MIP_MEIP;  // MEIP bit in MIP register (11th bit)
+                register_bank->setCSR(CSR_MIP, csr_temp);
+
+                logger->debug("{} ns. PC: 0x{:x}. Interrupt!", sc_core::sc_time_stamp().value(),
+                              register_bank->getPC());
+
+                /* updated MEPC register */
+                BaseType old_pc = register_bank->getPC();
+                register_bank->setCSR(CSR_MEPC, old_pc);
+
+                logger->debug("{} ns. PC: 0x{:x}. Old PC Value 0x{:x}", sc_core::sc_time_stamp().value(),
+                              register_bank->getPC(),
+                              old_pc);
+
+                /* update MCAUSE register */
+                register_bank->setCSR(CSR_MCAUSE, 0x80000000);
+
+                /* set new PC address */
+                BaseType new_pc = register_bank->getCSR(CSR_MTVEC);
+                //new_pc = new_pc & 0xFFFFFFFC; // last two bits always to 0
+                logger->debug("{} ns. PC: 0x{:x}. NEW PC Value 0x{:x}", sc_core::sc_time_stamp().value(),
+                              register_bank->getPC(),
+                              new_pc);
+                register_bank->setPC(new_pc);
+
+                ret_value = true;
+                interrupt = false;
+                irq_already_down = false;
+            }
+        } else {
+            if (!irq_already_down) {
+                csr_temp = register_bank->getCSR(CSR_MIP);
+                csr_temp &= ~MIP_MEIP;
+                register_bank->setCSR(CSR_MIP, csr_temp);
+                irq_already_down = true;
+            }
+        }
+
+        return ret_value;
+    }
+
+    bool RV32::CPU_step() {
+        bool PC_not_affected = false;
+
+        /* Get new PC value */
+        if (dmi_ptr_valid) {
+            /* if memory_offset at Memory module is set, this won't work */
+            std::memcpy(&INSTR, dmi_ptr + register_bank->getPC(), 4);
+        } else {
+            sc_core::sc_time delay = sc_core::SC_ZERO_TIME;
+            tlm::tlm_dmi dmi_data;
+            trans.set_address(register_bank->getPC());
+            instr_bus->b_transport(trans, delay);
+
+            if (trans.is_response_error()) {
+                SC_REPORT_ERROR("CPU base", "Read memory");
+            }
+
+            if (trans.is_dmi_allowed()) {
+                dmi_ptr_valid = instr_bus->get_direct_mem_ptr(trans, dmi_data);
+                if (dmi_ptr_valid) {
+                    std::cout << "Get DMI_PTR " << std::endl;
+                    dmi_ptr = dmi_data.get_dmi_ptr();
+                }
+            }
+        }
+
+        perf->codeMemoryRead();
+        inst.setInstr(INSTR);
+        bool breakpoint = false;
+
+        /* check what type of instruction is and execute it */
+        switch (inst.check_extension()) {
+            [[likely]] case BASE_EXTENSION:
+                PC_not_affected = exec->process_instruction(inst, &breakpoint);
+                if (PC_not_affected) {
+                    register_bank->incPC();
+                }
+                break;
+            case C_EXTENSION:
+                PC_not_affected = c_inst->process_instruction(inst, &breakpoint);
+                if (PC_not_affected) {
+                    register_bank->incPCby2();
+                }
+                break;
+            case M_EXTENSION:
+                PC_not_affected = m_inst->process_instruction(inst);
+                if (PC_not_affected) {
+                    register_bank->incPC();
+                }
+                break;
+            case A_EXTENSION:
+                PC_not_affected = a_inst->process_instruction(inst);
+                if (PC_not_affected) {
+                    register_bank->incPC();
+                }
+                break;
+                [[unlikely]] default:
+                std::cout << "Extension not implemented yet" << std::endl;
+                inst.dump();
+                exec->NOP();
+        }
+
+        if (breakpoint) {
+            std::cout << "Breakpoint set to true\n";
+        }
+
+        perf->instructionsInc();
+
+        return breakpoint;
+    }
+
+
+
+    void RV32::call_interrupt(tlm::tlm_generic_payload &m_trans,
+                              sc_core::sc_time &delay) {
+        interrupt = true;
+        /* Socket caller send a cause (its id) */
+        memcpy(&int_cause, m_trans.get_data_ptr(), sizeof(BaseType));
+        delay = sc_core::SC_ZERO_TIME;
+    }
+
+    std::uint64_t RV32::getStartDumpAddress() {
+        return register_bank->getValue(Registers<std::uint32_t>::t0);
+    }
+
+    std::uint64_t RV32::getEndDumpAddress() {
+        return register_bank->getValue(Registers<std::uint32_t>::t1);
+    }
+}

src/RV64.cpp

@@ -0,0 +1,189 @@
+/*!
+ \file CPU.cpp
+ \brief Main CPU class
+ \author Màrius Montón
+ \date August 2018
+ */
+// SPDX-License-Identifier: GPL-3.0-or-later
+#include "CPU.h"
+
+namespace riscv_tlm {
+
+    RV64::RV64(sc_core::sc_module_name const &name, BaseType PC, bool debug) :
+            CPU(name, debug), INSTR(0) {
+
+        register_bank = new Registers<BaseType>();
+        mem_intf = new MemoryInterface();
+        register_bank->setPC(PC);
+        register_bank->setValue(Registers<BaseType>::sp, (Memory::SIZE / 4) - 1);
+
+        int_cause = 0;
+
+        instr_bus.register_invalidate_direct_mem_ptr(this,
+                                                     &RV64::invalidate_direct_mem_ptr);
+
+        exec = new BASE_ISA<BaseType>(0, register_bank, mem_intf);
+        c_inst = new C_extension<BaseType>(0, register_bank, mem_intf);
+        m_inst = new M_extension<BaseType>(0, register_bank, mem_intf);
+        a_inst = new A_extension<BaseType>(0, register_bank, mem_intf);
+
+        trans.set_data_ptr(reinterpret_cast<unsigned char *>(&INSTR));
+
+        logger->info("Created RV64 CPU");
+        std::cout << "Created RV64 CPU" << std::endl;
+    }
+
+    RV64::~RV64() {
+        delete register_bank;
+        delete mem_intf;
+        delete exec;
+        delete c_inst;
+        delete m_inst;
+        delete a_inst;
+        delete m_qk;
+    }
+
+    bool RV64::cpu_process_IRQ() {
+        BaseType csr_temp;
+        bool ret_value = false;
+
+        if (interrupt) {
+            csr_temp = register_bank->getCSR(CSR_MSTATUS);
+            if ((csr_temp & MSTATUS_MIE) == 0) {
+                logger->debug("{} ns. PC: 0x{:x}. Interrupt delayed", sc_core::sc_time_stamp().value(),
+                              register_bank->getPC());
+
+                return ret_value;
+            }
+
+            csr_temp = register_bank->getCSR(CSR_MIP);
+
+            if ((csr_temp & MIP_MEIP) == 0) {
+                csr_temp |= MIP_MEIP;  // MEIP bit in MIP register (11th bit)
+                register_bank->setCSR(CSR_MIP, csr_temp);
+
+                logger->debug("{} ns. PC: 0x{:x}. Interrupt!", sc_core::sc_time_stamp().value(),
+                              register_bank->getPC());
+
+                /* updated MEPC register */
+                BaseType old_pc = register_bank->getPC();
+                register_bank->setCSR(CSR_MEPC, old_pc);
+
+                logger->debug("{} ns. PC: 0x{:x}. Old PC Value 0x{:x}", sc_core::sc_time_stamp().value(),
+                              register_bank->getPC(),
+                              old_pc);
+
+                /* update MCAUSE register */
+                register_bank->setCSR(CSR_MCAUSE, 0x80000000);
+
+                /* set new PC address */
+                BaseType new_pc = register_bank->getCSR(CSR_MTVEC);
+                //new_pc = new_pc & 0xFFFFFFFC; // last two bits always to 0
+                logger->debug("{} ns. PC: 0x{:x}. NEW PC Value 0x{:x}", sc_core::sc_time_stamp().value(),
+                              register_bank->getPC(),
+                              new_pc);
+                register_bank->setPC(new_pc);
+
+                ret_value = true;
+                interrupt = false;
+                irq_already_down = false;
+            }
+        } else {
+            if (!irq_already_down) {
+                csr_temp = register_bank->getCSR(CSR_MIP);
+                csr_temp &= ~MIP_MEIP;
+                register_bank->setCSR(CSR_MIP, csr_temp);
+                irq_already_down = true;
+            }
+        }
+
+        return ret_value;
+    }
+
+    bool RV64::CPU_step() {
+        bool PC_not_affected = false;
+
+        /* Get new PC value */
+        if (dmi_ptr_valid) {
+            /* if memory_offset at Memory module is set, this won't work */
+            std::memcpy(&INSTR, dmi_ptr + register_bank->getPC(), 4);
+        } else {
+            sc_core::sc_time delay = sc_core::SC_ZERO_TIME;
+            tlm::tlm_dmi dmi_data;
+            trans.set_address(register_bank->getPC());
+            instr_bus->b_transport(trans, delay);
+
+            if (trans.is_response_error()) {
+                SC_REPORT_ERROR("CPU base", "Read memory");
+            }
+
+            if (trans.is_dmi_allowed()) {
+                dmi_ptr_valid = instr_bus->get_direct_mem_ptr(trans, dmi_data);
+                if (dmi_ptr_valid) {
+                    std::cout << "Get DMI_PTR " << std::endl;
+                    dmi_ptr = dmi_data.get_dmi_ptr();
+                }
+            }
+        }
+
+        perf->codeMemoryRead();
+        inst.setInstr(INSTR);
+        bool breakpoint = false;
+
+        /* check what type of instruction is and execute it */
+        switch (inst.check_extension()) {
+            [[likely]] case BASE_EXTENSION:
+                PC_not_affected = exec->process_instruction(inst, &breakpoint);
+                if (PC_not_affected) {
+                    register_bank->incPC();
+                }
+                break;
+            case C_EXTENSION:
+                PC_not_affected = c_inst->process_instruction(inst, &breakpoint);
+                if (PC_not_affected) {
+                    register_bank->incPCby2();
+                }
+                break;
+            case M_EXTENSION:
+                PC_not_affected = m_inst->process_instruction(inst);
+                if (PC_not_affected) {
+                    register_bank->incPC();
+                }
+                break;
+            case A_EXTENSION:
+                PC_not_affected = a_inst->process_instruction(inst);
+                if (PC_not_affected) {
+                    register_bank->incPC();
+                }
+                break;
+                [[unlikely]] default:
+                std::cout << "Extension not implemented yet" << std::endl;
+                inst.dump();
+                exec->NOP();
+        }
+
+        if (breakpoint) {
+            std::cout << "Breakpoint set to true\n";
+        }
+
+        perf->instructionsInc();
+
+        return breakpoint;
+    }
+
+    void RV64::call_interrupt(tlm::tlm_generic_payload &m_trans,
+                              sc_core::sc_time &delay) {
+        interrupt = true;
+        /* Socket caller send a cause (its id) */
+        memcpy(&int_cause, m_trans.get_data_ptr(), sizeof(BaseType));
+        delay = sc_core::SC_ZERO_TIME;
+    }
+
+    std::uint64_t RV64::getStartDumpAddress() {
+        return register_bank->getValue(Registers<std::uint32_t>::t0);
+    }
+
+    std::uint64_t RV64::getEndDumpAddress() {
+        return register_bank->getValue(Registers<std::uint32_t>::t1);
+    }
+}

src/Registers.cpp

@@ -9,16 +9,16 @@
 #include "Registers.h"
 
 namespace riscv_tlm {
-
+    /* Specialization for each XLEN (RV32, RV64)*/
-    Registers::Registers() {
+    template<>
-        perf = Performance::getInstance();
+    void Registers<std::uint32_t>::initCSR() {
-
+        CSR[CSR_MISA] = MISA_MXL | MISA_M_EXTENSION | MISA_C_EXTENSION
-        initCSR();
+                        | MISA_A_EXTENSION | MISA_I_BASE;
-        register_bank[sp] = Memory::SIZE - 4; // default stack at the end of the memory
+        CSR[CSR_MSTATUS] = MISA_MXL;
-        register_PC = 0x80000000;       // default _start address
     }
 
-    void Registers::dump() {
+    template<>
+    void Registers<std::uint32_t>::dump() const {
         std::cout << "************************************" << std::endl;
         std::cout << "Registers dump" << std::dec << std::endl;
         std::cout << std::setfill('0') << std::uppercase;
@@ -98,79 +98,91 @@ namespace riscv_tlm {
         std::cout << "************************************" << std::endl;
     }
 
-    void Registers::setValue(int reg_num, std::int32_t value) {
+    template<>
-        if ((reg_num != 0) && (reg_num < 32)) {
+    void Registers<std::uint64_t>::initCSR() {
-            register_bank[reg_num] = value;
+        CSR[CSR_MISA] = (((std::uint64_t) 0x02) << 30) | MISA_M_EXTENSION | MISA_C_EXTENSION
-            perf->registerWrite();
-        }
-    }
-
-    std::uint32_t Registers::getValue(int reg_num) const {
-        if ((reg_num >= 0) && (reg_num < 32)) {
-            perf->registerRead();
-            return register_bank[reg_num];
-        } else {
-            return static_cast<std::int32_t>(0xFFFFFFFF);
-        }
-    }
-
-    std::uint32_t Registers::getPC() const {
-        return register_PC;
-    }
-
-    void Registers::setPC(std::uint32_t new_pc) {
-        register_PC = new_pc;
-    }
-
-    std::uint32_t Registers::getCSR(const int csr) {
-        std::uint32_t ret_value;
-
-        switch (csr) {
-            case CSR_CYCLE:
-            case CSR_MCYCLE:
-                ret_value = static_cast<std::uint64_t>(sc_core::sc_time(
-                        sc_core::sc_time_stamp()
-                        - sc_core::sc_time(sc_core::SC_ZERO_TIME)).to_double())
-                            & 0x00000000FFFFFFFF;
-                break;
-            case CSR_CYCLEH:
-            case CSR_MCYCLEH:
-                ret_value = static_cast<std::uint32_t>((std::uint64_t) (sc_core::sc_time(
-                        sc_core::sc_time_stamp()
-                        - sc_core::sc_time(sc_core::SC_ZERO_TIME)).to_double())
-                                                               >> 32 & 0x00000000FFFFFFFF);
-                break;
-            case CSR_TIME:
-                ret_value = static_cast<std::uint64_t>(sc_core::sc_time(
-                        sc_core::sc_time_stamp()
-                        - sc_core::sc_time(sc_core::SC_ZERO_TIME)).to_double())
-                            & 0x00000000FFFFFFFF;
-                break;
-            case CSR_TIMEH:
-                ret_value = static_cast<std::uint32_t>((std::uint64_t) (sc_core::sc_time(
-                        sc_core::sc_time_stamp()
-                        - sc_core::sc_time(sc_core::SC_ZERO_TIME)).to_double())
-                                                               >> 32 & 0x00000000FFFFFFFF);
-                break;
-                [[likely]] default:
-                ret_value = CSR[csr];
-                break;
-        }
-        return ret_value;
-    }
-
-    void Registers::setCSR(int csr, std::uint32_t value) {
-        /* @FIXME: rv32mi-p-ma_fetch tests doesn't allow MISA to be writable,
-         * but Volume II: Privileged Architecture v1.10 says MISA is writable (?)
-         */
-        if (csr != CSR_MISA) {
-            CSR[csr] = value;
-        }
-    }
-
-    void Registers::initCSR() {
-        CSR[CSR_MISA] = MISA_MXL | MISA_M_EXTENSION | MISA_C_EXTENSION
                         | MISA_A_EXTENSION | MISA_I_BASE;
         CSR[CSR_MSTATUS] = MISA_MXL;
     }
+
+    template<>
+    void Registers<std::uint64_t>::dump() const {
+        std::cout << "************************************" << std::endl;
+        std::cout << "Registers dump" << std::dec << std::endl;
+        std::cout << std::setfill('0') << std::uppercase;
+        std::cout << "x0 (zero):  0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[0];
+        std::cout << " x1 (ra):    0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[1];
+        std::cout << " x2 (sp):    0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[2];
+        std::cout << " x3 (gp):    0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[3] << std::endl;
+
+        std::cout << "x4 (tp):    0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[4];
+        std::cout << " x5 (t0):    0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[5];
+        std::cout << " x6 (t1):    0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[6];
+        std::cout << " x7 (t2):    0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[7] << std::endl;
+
+        std::cout << "x8 (s0/fp): 0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[8];
+        std::cout << " x9 (s1):    0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[9];
+        std::cout << " x10 (a0):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[10];
+        std::cout << " x11 (a1):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[11] << std::endl;
+
+        std::cout << "x12 (a2):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[12];
+        std::cout << " x13 (a3):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[13];
+        std::cout << " x14 (a4):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[14];
+        std::cout << " x15 (a5):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[15] << std::endl;
+
+        std::cout << "x16 (a6):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[16];
+        std::cout << " x17 (a7):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[17];
+        std::cout << " x18 (s2):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[18];
+        std::cout << " x19 (s3):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[19] << std::endl;
+
+        std::cout << "x20 (s4):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[20];
+        std::cout << " x21 (s5):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[21];
+        std::cout << " x22 (s6):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[22];
+        std::cout << " x23 (s7):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[23] << std::endl;
+
+        std::cout << "x24 (s8):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[24];
+        std::cout << " x25 (s9):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[25];
+        std::cout << " x26 (s10):  0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[26];
+        std::cout << " x27 (s11):  0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[27] << std::endl;
+
+        std::cout << "x28 (t3):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[28];
+        std::cout << " x29 (t4):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[29];
+        std::cout << " x30 (t5):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[30];
+        std::cout << " x31 (t6):   0x" << std::right << std::setw(16)
+                  << std::hex << register_bank[31] << std::endl;
+
+        std::cout << "PC: 0x" << std::setw(16) << std::hex << register_PC << std::dec << std::endl;
+        std::cout << "************************************" << std::endl;
+    }
 }

src/Simulator.cpp

@@ -15,7 +15,6 @@
 #include <cstdint>
 
 #include "CPU.h"
-#include "Memory.h"
 #include "BusCtrl.h"
 #include "Trace.h"
 #include "Timer.h"
@@ -24,12 +23,16 @@
 #include "spdlog/spdlog.h"
 #include "spdlog/sinks/basic_file_sink.h"
 
+typedef enum {RV32, RV64} cpu_types_t;
+
 std::string filename;
 bool debug_session = false;
 bool mem_dump = false;
 uint32_t dump_addr_st = 0;
 uint32_t dump_addr_end = 0;
 
+cpu_types_t cpu_type_opt = RV32;
+
 /**
  * @class Simulator
  * This class instantiates all necessary modules, connects its ports and starts
@@ -45,13 +48,19 @@ public:
     riscv_tlm::peripherals::Trace *trace;
     riscv_tlm::peripherals::Timer *timer;
 
-	explicit Simulator(sc_core::sc_module_name const &name): sc_module(name) {
+	explicit Simulator(sc_core::sc_module_name const &name, cpu_types_t cpu_type_m): sc_module(name) {
 		std::uint32_t start_PC;
 
 		MainMemory = new riscv_tlm::Memory("Main_Memory", filename);
 		start_PC = MainMemory->getPCfromHEX();
 
-		cpu = new riscv_tlm::CPU("cpu", start_PC, debug_session);
+        cpu_type = cpu_type_m;
+
+        if (cpu_type == RV32) {
+            cpu = new riscv_tlm::RV32("cpu", start_PC, debug_session);
+        } else {
+            cpu = new riscv_tlm::RV64("cpu", start_PC, debug_session);
+        }
 
 		Bus = new riscv_tlm::BusCtrl("BusCtrl");
 		trace = new riscv_tlm::peripherals::Trace("Trace");
@@ -67,7 +76,7 @@ public:
 		timer->irq_line.bind(cpu->irq_line_socket);
 
 		if (debug_session) {
-            riscv_tlm::Debug debug(cpu, MainMemory);
+            //riscv_tlm::Debug debug(cpu, MainMemory);
 		}
 	}
 
@@ -83,10 +92,19 @@ public:
 	}
 
 private:
-    void MemoryDump() {
+    void MemoryDump() const {
 	    std::cout << "********** MEMORY DUMP ***********\n";
+
+        if (dump_addr_st == 0) {
+            dump_addr_st = cpu->getStartDumpAddress();
+        }
+
+        if (dump_addr_end == 0) {
+            dump_addr_end = cpu->getEndDumpAddress();
+        }
+
+        std::cout << "from 0x" << std::hex << dump_addr_st << " to 0x" << dump_addr_end << "\n";
         tlm::tlm_generic_payload trans;
-        tlm::tlm_dmi dmi_data;
         sc_core::sc_time delay;
         std::uint32_t data[4];
 
@@ -116,6 +134,9 @@ private:
 
         signature_file.close();
        }
+
+private:
+    cpu_types_t cpu_type;
 };
 
 Simulator *top;
@@ -131,11 +152,12 @@ void intHandler(int dummy) {
 void process_arguments(int argc, char *argv[]) {
 
 	int c;
-	int debug_level;
+	long int debug_level;
 
 	debug_session = false;
+    cpu_type_opt = RV32;
 
-	while ((c = getopt(argc, argv, "DTE:B:L:f:?")) != -1) {
+	while ((c = getopt(argc, argv, "DTE:B:L:f:R:?")) != -1) {
 		switch (c) {
 		case 'D':
 			debug_session = true;
@@ -144,13 +166,13 @@ void process_arguments(int argc, char *argv[]) {
             mem_dump = true;
             break;
         case 'B':
-            dump_addr_st = std::strtoul (optarg, 0, 16);
+            dump_addr_st = std::strtoul (optarg, nullptr, 16);
             break;
         case 'E':
-            dump_addr_end = std::strtoul(optarg, 0, 16);
+            dump_addr_end = std::strtoul(optarg, nullptr, 16);
             break;
 		case 'L':
-			debug_level = std::atoi(optarg);
+			debug_level = std::strtol(optarg, nullptr, 10);
 
 			switch (debug_level) {
 			case 3:
@@ -173,6 +195,13 @@ void process_arguments(int argc, char *argv[]) {
 		case 'f':
 			filename = std::string(optarg);
 			break;
+        case 'R':
+            if (strcmp(optarg, "32") == 0) {
+                cpu_type_opt = RV32;
+            } else {
+                cpu_type_opt = RV64;
+            }
+            break;
 		case '?':
 			std::cout << "Call ./RISCV_TLM -D -L <debuglevel> (0..3) filename.hex"
 					<< std::endl;
@@ -199,15 +228,15 @@ int sc_main(int argc, char *argv[]) {
 	/* SystemC time resolution set to 1 ns*/
 	sc_core::sc_set_time_resolution(1, sc_core::SC_NS);
 
-    spdlog::filename_t filename = SPDLOG_FILENAME_T("newlog.txt");
+    spdlog::filename_t log_filename = SPDLOG_FILENAME_T("newlog.txt");
-    logger = spdlog::create<spdlog::sinks::basic_file_sink_mt>("my_logger", filename);
+    logger = spdlog::create<spdlog::sinks::basic_file_sink_mt>("my_logger", log_filename, true);
     logger->set_pattern("%v");
     logger->set_level(spdlog::level::info);
 
 	/* Parse and process program arguments. -f is mandatory */
 	process_arguments(argc, argv);
 
-	top = new Simulator("top");
+	top = new Simulator("top", cpu_type_opt);
 
 	auto start = std::chrono::steady_clock::now();
 	sc_core::sc_start();
@@ -219,7 +248,8 @@ int sc_main(int argc, char *argv[]) {
 	std::cout << "Total elapsed time: " << elapsed_seconds.count() << "s" << std::endl;
 	std::cout << "Simulated " << int(std::round(instructions)) << " instr/sec" << std::endl;
 
-	if (!mem_dump) {
+	if (!mem_dump)
+    {
         std::cout << "Press Enter to finish" << std::endl;
         std::cin.ignore();
     }

src/extension_base.cpp

@@ -7,57 +7,3 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "extension_base.h"
-
-namespace riscv_tlm {
-
-    extension_base::extension_base(const sc_dt::sc_uint<32> &instr,
-                                   Registers *register_bank, MemoryInterface *mem_interface) :
-            m_instr(instr), regs(register_bank), mem_intf(mem_interface) {
-
-        perf = Performance::getInstance();
-        logger = spdlog::get("my_logger");
-    }
-
-    extension_base::~extension_base() = default;
-
-    void extension_base::setInstr(std::uint32_t p_instr) {
-        m_instr = sc_dt::sc_uint<32>(p_instr);
-    }
-
-    void extension_base::dump() const {
-        std::cout << std::hex << "0x" << m_instr << std::dec << std::endl;
-    }
-
-    void extension_base::RaiseException(std::uint32_t cause, std::uint32_t inst) {
-        std::uint32_t new_pc, current_pc, m_cause;
-
-        current_pc = regs->getPC();
-        m_cause = regs->getCSR(CSR_MSTATUS);
-        m_cause |= cause;
-
-        new_pc = regs->getCSR(CSR_MTVEC);
-
-        regs->setCSR(CSR_MEPC, current_pc);
-
-        if (cause == EXCEPTION_CAUSE_ILLEGAL_INSTRUCTION) {
-            regs->setCSR(CSR_MTVAL, inst);
-        } else {
-            regs->setCSR(CSR_MTVAL, current_pc);
-        }
-
-        regs->setCSR(CSR_MCAUSE, cause);
-        regs->setCSR(CSR_MSTATUS, m_cause);
-
-        regs->setPC(new_pc);
-
-        logger->debug("{} ns. PC: 0x{:x}. Exception! new PC 0x{:x} ", sc_core::sc_time_stamp().value(), regs->getPC(),
-                      new_pc);
-    }
-
-    bool extension_base::NOP() {
-
-        logger->debug("{} ns. PC: 0x{:x}. NOP! new PC 0x{:x} ", sc_core::sc_time_stamp().value(), regs->getPC());
-        sc_core::sc_stop();
-        return true;
-    }
-}