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Simulator - rewriting now

I move the previous version simulator to Archi-Project1/simulator-old
Because the old version cannot handle the error dump very well, I try to modify the program.

Assembler - J-Type Instructions not implemented

J-Type Instructions (j, jal) are still missing. Need to implement jinst and complete the instruction set.

Assembler cannot handle "lui" instruction

Simulator - instruction "lui" modifies $zero

The instruction lui will modify the content of $zero. Perhaps STATUS_HALT and STATUS_CONTINUE need more care?

Valgrind complains about uninitialised variable

Are these potential bugs or just false positives?

==30358== Memcheck, a memory error detector
==30358== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==30358== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==30358== Command: ./CMP
==30358== 
Start simulator - custom mode
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4017D3: Simulator::Simulator::report() (simulator.cpp:135)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4017D3: Simulator::Simulator::report() (simulator.cpp:135)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F9A: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4017D3: Simulator::Simulator::report() (simulator.cpp:135)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C42001: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4017D3: Simulator::Simulator::report() (simulator.cpp:135)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4017F6: Simulator::Simulator::report() (simulator.cpp:136)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4017F6: Simulator::Simulator::report() (simulator.cpp:136)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F9A: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4017F6: Simulator::Simulator::report() (simulator.cpp:136)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C42001: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4017F6: Simulator::Simulator::report() (simulator.cpp:136)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401836: Simulator::Simulator::report() (simulator.cpp:138)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401836: Simulator::Simulator::report() (simulator.cpp:138)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401859: Simulator::Simulator::report() (simulator.cpp:139)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401859: Simulator::Simulator::report() (simulator.cpp:139)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F9A: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401859: Simulator::Simulator::report() (simulator.cpp:139)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C42001: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401859: Simulator::Simulator::report() (simulator.cpp:139)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401899: Simulator::Simulator::report() (simulator.cpp:141)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401899: Simulator::Simulator::report() (simulator.cpp:141)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F9A: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401899: Simulator::Simulator::report() (simulator.cpp:141)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C42001: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401899: Simulator::Simulator::report() (simulator.cpp:141)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4018BC: Simulator::Simulator::report() (simulator.cpp:142)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4018BC: Simulator::Simulator::report() (simulator.cpp:142)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4018FC: Simulator::Simulator::report() (simulator.cpp:144)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4018FC: Simulator::Simulator::report() (simulator.cpp:144)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F9A: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4018FC: Simulator::Simulator::report() (simulator.cpp:144)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C42001: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4018FC: Simulator::Simulator::report() (simulator.cpp:144)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x40191F: Simulator::Simulator::report() (simulator.cpp:145)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x40191F: Simulator::Simulator::report() (simulator.cpp:145)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x40195F: Simulator::Simulator::report() (simulator.cpp:147)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x40195F: Simulator::Simulator::report() (simulator.cpp:147)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401982: Simulator::Simulator::report() (simulator.cpp:148)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x401982: Simulator::Simulator::report() (simulator.cpp:148)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4019C2: Simulator::Simulator::report() (simulator.cpp:150)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4019C2: Simulator::Simulator::report() (simulator.cpp:150)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41E3F: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4019E5: Simulator::Simulator::report() (simulator.cpp:151)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== Conditional jump or move depends on uninitialised value(s)
==30358==    at 0x1C41F67: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4019E5: Simulator::Simulator::report() (simulator.cpp:151)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
Finish simulator
==30358== Syscall param write(buf) points to uninitialised byte(s)
==30358==    at 0x1C500CA: write (in /lib/libc.so.7)
==30358==    by 0x1C4FA86: ??? (in /lib/libc.so.7)
==30358==    by 0x1C4F678: ??? (in /lib/libc.so.7)
==30358==    by 0x1BF366F: ??? (in /lib/libc.so.7)
==30358==    by 0x1BD1AB9: exit (in /lib/libc.so.7)
==30358==    by 0x400A15: (below main) (in /usr/home/otoha/work/Archi-Project/Project3/archi24/simulator/CMP)
==30358==  Address 0x2419151 is 17 bytes inside a block of size 32,768 alloc'd
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x1C4F045: ??? (in /lib/libc.so.7)
==30358==    by 0x1C4EF43: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FF63: ??? (in /lib/libc.so.7)
==30358==    by 0x1C3FCA6: vfprintf_l (in /lib/libc.so.7)
==30358==    by 0x1C3144F: fprintf (in /lib/libc.so.7)
==30358==    by 0x4017AC: Simulator::Simulator::report() (simulator.cpp:134)
==30358==    by 0x401B03: Simulator::Simulator::run() (simulator.cpp:174)
==30358==    by 0x400D3E: main (main.cpp:34)
==30358==  Uninitialised value was created by a heap allocation
==30358==    at 0x100C2B3: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==30358==    by 0x12A3B09: operator new(unsigned long) (in /usr/lib/libc++.so.1)
==30358==    by 0x400D03: main (main.cpp:33)
==30358== 
==30358== 
==30358== HEAP SUMMARY:
==30358==     in use at exit: 36,864 bytes in 2 blocks
==30358==   total heap usage: 6 allocs, 4 frees, 4,352,312 bytes allocated
==30358== 
==30358== LEAK SUMMARY:
==30358==    definitely lost: 0 bytes in 0 blocks
==30358==    indirectly lost: 0 bytes in 0 blocks
==30358==      possibly lost: 0 bytes in 0 blocks
==30358==    still reachable: 36,864 bytes in 2 blocks
==30358==         suppressed: 0 bytes in 0 blocks
==30358== Reachable blocks (those to which a pointer was found) are not shown.
==30358== To see them, rerun with: --leak-check=full --show-reachable=yes
==30358== 
==30358== For counts of detected and suppressed errors, rerun with: -v
==30358== ERROR SUMMARY: 40 errors from 35 contexts (suppressed: 0 from 0)

Include fatal exception in test case?

Should we include exception that halts the simulator? Although in the specs it seems to be valid, I'm not sure if the TAs would accept it.

Testcase02 - Number overflow won't happen in line 33

 30         ;; Test corner case of 0x80000000
 31         lw      $s0,    8($zero)
 32         ;; Add 1 to 0x80000000
 33         addi    $s1,    $s0,    1       ;Overflow

0x80000000 in addi should be -2^31
After $s0 + 1, it will be -2^31 + 1 which is not a case of number overflow.

Should it be 0x80000000 - 1?

Bugs on DTLB and DPTE

Accept example 1 and 2.
But it got wrong hits/misses on example 3.

   My answer                                           |   Correct answer
   13 DTLB :                                           |   13 DTLB :
   14 # hits: 29                                       |   14 # hits: 26
   15 # misses: 3                                      |   15 # misses: 6
   16                                                  |   16
   21 DPageTable :                                     |   21 DPageTable :
   22 # hits: 0                                        |   22 # hits: 0
   23 # misses: 3                                      |   23 # misses: 6
   24                                                  |   24

I found that it got extra three hits than correct answer.

Project 3's test case

After I use make command, there are some error messages occur.

lua ../../mips-assembler/mips-as.lua code.s iimage.bin 0x324
lua: ../../mips-assembler/mips-as.lua:382: attempt to index global 'bit32' (a nil value)
stack traceback:
    ../../mips-assembler/mips-as.lua:382: in function 'binary'
    ../../mips-assembler/mips-as.lua:464: in function 'mipsas'
    ../../mips-assembler/mips-as.lua:481: in main chunk
    [C]: ?
make: *** [iimage.bin] Error 1

Simulator - Can not handle byte and half-word access

Reviewing the spec now, there is something wrong in the data handler.

Dependency on $zero should not be stalled or forwarded

Since the content of the register $zero is never changed, any dependency on the register is to be ignored. Current implementation of the simulator does not follow this behavior.

About bus in project 2

In archi09:
We miss a line of Number overflow in cycle: 12.

In archi29, archi49:
The fwd from $31.

Simulator - Arithmetic instructions write to zero

Arithmetic instructions like add, sub, and, or currently don't check for Write to Zero exceptions, making the contents of $zero writable.

Add store instructions

Add support for SW, SH and SB instructions.

Simulator - bne, beq cannot handle the number overflow now

As title.

Simulator - Does not return to STATUS_NORMAL

When an exception occurs, STATUS_NORMAL is never reached again, causing following lw and possibly other instructions to fail. Probably introduced in 37658da.

Memory instructions other than those operating on bytes need to check for the whole word or half-word to be in the address range. Current implementation only ensures that the starting address is within range. See iLMS forum.

Bug in forwarding for store instructions

Currently only dependency on rs is checked for the store instructions sw, sh and sb. Dependency on rt should also be forwarded.

Dependency issue on "jal" instruction

The instruction jal writes to register $31, the forwarding behavior in this situation needs to be clarified. Waiting for response at iLMS forum.

Should "lui" instruction accept negative constant?

It is not clear about whether we should accept a negative number as the constant in the assembly syntax of "lui" operation. Although legal and unambiguous, it does not make much sense to me.

-- Current regexp to extract the constant
local c = tonumber(string.match(s, ",%s*(%w+)"))
-- Should we change it to this?
local c = tonumber(string.match(s, ",%s*(%g+)"))

Testcase02 - Address overflow

In testcase2, line 19, 20:

;; Access memory at 0x7fffffff + 9 = 8
lw      $s3,    9($s0)          ;Overflow

The $s0 is 2147483647, so $s0 + offset(signed) will be a negative number.
The simulator will dump the Address overflow error and halt the simulation.

Bugs on DCACHE

In example 3,

    My answer                                          |    Correct answer
    5 DCache :                                         |    5 DCache :
    6 # hits: 11                                       |    6 # hits: 10
    7 # misses: 21                                     |    7 # misses: 22

Assembler - Register names not recognized yet

Currently registers can only be addressed by numbers ($0 to $31). Need to add support for register name mnemonics like $sp or $ra.

Project 1 simulator - bug in jump instruction

In JTypeExecution.cpp, the mask to access the four bits of the program counter is 0xF000000, where it should be 0xF0000000.

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