avremu/avr.testsuite.tex

%% This is the test suite for my avr Implementation
\def\avr@test@setup#1{%
  \typeout{---- Test: #1 ----}%
  \typeout{-> Initialize the AVR}%
  \avr@init%
}

\def\avr@test@SREG#1{% Tests SREG for value
  \avr@sreg@get{\@@SREG}%
  \expandafter\ifstrequal\expandafter{\@@SREG}{#1}{%Success
    }{%
    \avr@error{SREG unequal: #1 != \@@SREG}%
  }%
}

\def\avr@test@REG#1#2{% Tests SREG for value
  \avr@reg@get{\csuse{avr@#1}}{\@@REG}%
  \expandafter\ifstrequal\expandafter{\@@REG}{#2}{%Success
    }{%
    \avr@error{REG unequal: #2 != \@@REG}%
  }%
}

% Hook Macro for the tests
\def\avr@test{}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def\avr@test@ADD{%
  \def\avr@test@helper##1##2{%
     \avr@test@setup{ADD: ##1+##2}%
     \avr@instr@LDI{0}{\csuse{avr@r31}}{##1}%
     \avr@instr@LDI{1}{\csuse{avr@r17}}{##2}%
     \avr@instr@ADD{2}{\csuse{avr@r17}}{\csuse{avr@r31}}%
     \avr@instr@stepn{3}%
  }%
  \avr@test@helper{00000000}{00000001}%
  \avr@test@SREG{00000000}%
  \avr@test@REG{r17}{00000001}%
  % Test Zero Flag
  \avr@test@helper{00000000}{00000000}%
  \avr@test@SREG{00000010}%
  \avr@test@REG{r17}{00000000}%
  % Test Carry and Half Carry
  \avr@test@helper{11111111}{00000010}%
  \avr@test@SREG{00100001}%
  \avr@test@REG{r17}{00000001}%
  % Test V
  \avr@test@helper{10000000}{10000000}%
  \avr@test@REG{r17}{00000000}%
  \avr@test@SREG{00011011}%
}
\appto\avr@test{\avr@test@ADD}

\def\avr@test@ADC{%
  \def\avr@test@helper##1##2##3##4{%
     \avr@test@setup{ADD: (##1:##2) + (##3:##4)}%
     \avr@instr@LDI{0}{\csuse{avr@r30}}{##1}%
     \avr@instr@LDI{1}{\csuse{avr@r31}}{##2}%
     \avr@instr@LDI{2}{\csuse{avr@r17}}{##3}%
     \avr@instr@LDI{3}{\csuse{avr@r18}}{##4}%
     \avr@instr@ADD{4}{\csuse{avr@r18}}{\csuse{avr@r31}}%
     \avr@instr@ADC{5}{\csuse{avr@r17}}{\csuse{avr@r30}}%
     \avr@instr@stepn{6}%
  }%
  \avr@test@helper{00000000}{10000001}{00000000}{10000000}%
  \avr@test@REG{r17}{00000001}%
  \avr@test@SREG{00000000}%

  \avr@test@helper{00000011}{10000001}{00001100}{10000000}%
  \avr@test@REG{r17}{00010000}%
  \avr@test@SREG{00100000}%

}
\appto\avr@test{\avr@test@ADC}

\def\avr@test@SUB{%
  \def\avr@test@helper##1##2{%
     \avr@test@setup{SUB: ##1 - ##2}%
     \avr@instr@LDI{0}{\csuse{avr@r17}}{##1}%
     \avr@instr@LDI{1}{\csuse{avr@r31}}{##2}%
     \avr@instr@SUB{2}{\csuse{avr@r17}}{\csuse{avr@r31}}%
     \avr@instr@stepn{3}%
  }%
  \avr@test@helper{00001111}{00000010}%
  \avr@test@REG{r17}{00001101}%
  \avr@test@SREG{00000000}%

  \avr@test@helper{00001111}{00010000}%
  \avr@test@REG{r17}{11111111}%
  \avr@test@SREG{00000101}%
}
\appto\avr@test{\avr@test@SUB}

\def\avr@test@SBC{%
  \def\avr@test@helper##1##2##3##4{%
     \avr@test@setup{SBC: (##1:##2) - (##3:##4)}%
     \avr@instr@LDI{0}{\csuse{avr@r30}}{##3}%
     \avr@instr@LDI{1}{\csuse{avr@r31}}{##4}%
     \avr@instr@LDI{2}{\csuse{avr@r17}}{##1}%
     \avr@instr@LDI{3}{\csuse{avr@r18}}{##2}%
     \avr@instr@SUB{4}{\csuse{avr@r18}}{\csuse{avr@r31}}%
     \avr@instr@SBC{5}{\csuse{avr@r17}}{\csuse{avr@r30}}%
     \avr@instr@stepn{6}%
  }%
  \avr@test@helper{00000000}{10000001}{00000000}{10000001}%
  \avr@test@REG{r17}{00000000}%
  \avr@test@REG{r18}{00000000}%
  \avr@test@SREG{00000010}%

  \avr@test@helper{00000000}{00000000}{00000000}{00000001}%
  \avr@test@REG{r17}{11111111}%
  \avr@test@REG{r18}{11111111}%
  \avr@test@SREG{00100101}%

  \avr@test@helper{00000000}{10000000}{00000000}{00000001}%
  \avr@test@REG{r17}{00000000}%
  \avr@test@REG{r18}{01111111}%
  \avr@test@SREG{00000010}%
}
\appto\avr@test{\avr@test@SBC}

\def\avr@test@BRB{%
  \def\avr@test@helper##1##2##3{%
     \avr@test@setup{BRB: ##1+##2 => PC+2}%
     \avr@instr@LDI{0}{\csuse{avr@r30}}{##1}%
     \avr@instr@LDI{1}{\csuse{avr@r31}}{##2}%
     \avr@instr@ADD{2}{\csuse{avr@r30}}{\csuse{avr@r31}}%
     \@@BRB{3}{##3}{1}%
     \avr@instr@LDI{4}{\csuse{avr@r31}}{11001100}%
     \avr@instr@LDI{5}{\csuse{avr@r20}}{00000000}%
     \avr@instr@stepn{5}%
  }%
  % Check for cleared flag
  \def\@@BRB{\avr@instr@BRBC}

  \avr@test@helper{10000000}{10000000}{000}%
  \avr@test@REG{r31}{11001100}%

  \avr@test@helper{10000000}{00000001}{000}%
  \avr@test@REG{r31}{00000001}%

  % Check for SET flag
  \def\@@BRB{\avr@instr@BRBS}

  \avr@test@helper{10000000}{10000000}{000}%
  \avr@test@REG{r31}{10000000}%

  \avr@test@helper{10000000}{10000001}{100}%
  \avr@test@REG{r31}{10000001}%
}
\preto\avr@test{\avr@test@BRB}

\def\avr@test@fibonacci{%
  \avr@test@setup{Fibonacci -- fib(8)=21}%
  \avr@instr@LDI{0}{\csuse{avr@r30}}{00000001}%
  \avr@instr@LDI{1}{\csuse{avr@r31}}{00000001}%
  \avr@instr@LDI{2}{\csuse{avr@r20}}{00000101}%
  \avr@instr@LDI{3}{\csuse{avr@r21}}{00000001}%
  % tmp = x
  \avr@instr@MOV{4}{\csuse{avr@r29}}{\csuse{avr@r30}}%
  % x = x + y
  \avr@instr@ADD{5}{\csuse{avr@r30}}{\csuse{avr@r31}}%
  % y = tmp
  \avr@instr@MOV{6}{\csuse{avr@r31}}{\csuse{avr@r29}}%
  % i--
  \avr@instr@SUB{7}{\csuse{avr@r20}}{\csuse{avr@r21}}%
  \avr@instr@BRPL{8}{-5}
  \avr@instr@BREAK{9}

  \avr@instr@stepn{100}%
  \avr@test@REG{r30}{00010101}
}
\preto\avr@test{\avr@test@fibonacci}

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