The Perl Toolchain Summit needs more sponsors. If your company depends on Perl, please support this very important event.
 / 
CPU-Z80-Assembler-2.05_05
River stage one • 1 direct dependent • 1 total dependent
1 ++

Changes for version 2.05_05 - 2009-08-26

  • Fix Parser.pm version
  • Remove dead code
  • Improve documentation
  • Tests failed in Unix due to lack of \r processing
  • Compatible with perl 5.006, downgraded requirement from 5.008.
  • Error in macro expansion : was eating statement terminator

Changes for version 2.05_04 - 2009-08-23

  • New Stream class - faster than HOP::Stream, because head element is always available to be read without computation (is_promise() in HOP::Stream) and no test is needed to distinguish a stream node from a array-ref element (is_node() in HOP::Stream). The stream has an head element, and a list of the next elements, which may contain iterators.
  • List object uses the input to the assembler to read the lines again during the listing phase, instead of globing all tokens in memory
  • Remove usage of HOP::Stream
  • Move the macro processing into the parser - removes one level of stream processing
  • Added the unofficial Z80 opcodes to the test cases
  • Benchmark assembly times: 0.337 sjasmplus 2.734 z80masm-2.01 2.738 z80masm-2.05 2.898 z80masm-current 3.555 z80masm-2.05_03 11.342 z80masm-1.03

Changes for version 2.05_03 - 2009-08-11

  • Performance :
    • hand-coded contructor and accessor for Line.pm and Token.pm instead of Class::Struct, because too much time was being spent on Token->new()
  • Remove Class.pm : plugin replacement to Class::Class to solve RT #42710
  • Remove Node.pm : cannot use inheritance with Class::Struct; define different modules (Program.pm, Segment.pm, Opcode.pm, Expr.pm) with the same interface (child contains list of children of this node).
  • All test scripts now pass
  • Move test scripts data files to t\data
  • Move all bechmarking scripts to tools\benchmark
  • New List.pm class to handle output of the assembly file listing at the code generation stage.
  • New ParserGenerator.pm class to generate a try-based non-backtracking parser. Builds a complete state table for the input grammar, where each state is a map of current-token => next-state, or current-token => accept-rule, or current-token => call-sub-rule. The input grammar accepts rule => token token ... [sub-rule] ... action The sub-rule call accepts optional ('?'), 0 or more ('*') or 1 or more ('+'). The output is the new Parser.pm module with about 7K states and 20K lines of Perl code --> PERFORMANCE PENALTY.
  • Remove ParserTable.pm : whole Parser.pm is now generated by tools\build_Parser.pl
  • Expr.pm parser now checks for the correct syntax. The previous parser just extracted balanced parentheses.
  • Lexer.pm :
    • accept db, dw, dt, dm as alias to defb, defw, deft, defm
    • remove quotes from STRING token value
  • Line.pm : added back is_equal() and is_different()
  • Macro.pm :
    • return the list of newline tokens parsed inside of a macro definition back to the stream, so that the assembly listing contains also these lines.
    • replace statement_end() by /[:\n]/ -> performance
  • Program.pm, Segment.pm : new org() and add() methods to be called by code generator.
    • The lexer is still the performance botleneck, together with the heavy usage of HOP::Stream.
  • %Time ExclSec CumulS #Calls sec/call Csec/c Name 43.7 0.500 3.052 71417 0.0000 0.0000 HOP::Stream::tail 33.6 0.385 0.665 98780 0.0000 0.0000 HOP::Stream::head 24.6 0.282 0.466 170197 0.0000 0.0000 HOP::Stream::is_node 22.4 0.257 1.214 17902 0.0000 0.0001 CPU::Z80::Assembler::Lexer::__ANON__ 21.3 0.244 0.257 67163 0.0000 0.0000 HOP::Stream::is_promise 20.7 0.237 2.173 34954 0.0000 0.0001 CPU::Z80::Assembler::Macro::__ANON__ 20.4 0.234 0.250 9 0.0260 0.0278 CPU::Z80::Assembler::Macro::BEGIN 19.6 0.225 0.225 242140 0.0000 0.0000 UNIVERSAL::isa 18.6 0.213 3.250 71417 0.0000 0.0000 HOP::Stream::drop

Changes for version 2.05_02 - 2009-04-25

  • Line.pm, Token.pm :
    • go back to Class::Struct instead of Class::Class (bad performance of the later)
    • do not use "eval(Data::Dump::dump())" for clone - bad performance
    • add overload for 'bool' and '0+' - '""' was being used, and is too slow because it uses Data::Dump::dump() internally
    • remomve is_equal() and is_different() methods (Line.pm)

Changes for version 2.05_01 - 2009-04-23

  • Add Line, Token classes. No need to create LINE tokens - each token carries the line number. Change to single-pass design. Use Class::Class hierarchy for parsed objects. Several test scripts fail. Documentation needs update. Dead code needs to be removed.

Documentation

z80masm
a macro assembler for the Z80 micro-processor

Modules

CPU::Z80::Assembler
a Z80 assembler
CPU::Z80::Assembler::Expr
Represents one assembly expression to be computed at link time
CPU::Z80::Assembler::Lexer
Scanner for the Z80 assembler
CPU::Z80::Assembler::Line
One line of text retrieved from the input
CPU::Z80::Assembler::List
Assembly listing output class
CPU::Z80::Assembler::Macro
Macro pre-processor for the Z80 assembler
CPU::Z80::Assembler::Opcode
Represents one assembly expression to be computed at link time
CPU::Z80::Assembler::Parser
Parser for the Z80 assembler
CPU::Z80::Assembler::Preprocessor
Preprocessor for the Z80 assembler
CPU::Z80::Assembler::Program
Represents one assembly program
CPU::Z80::Assembler::Segment
Represents one segment of assembly opcodes
CPU::Z80::Assembler::Stream
Object to encapsulate an iterator to be able to unget
CPU::Z80::Assembler::Token
One token retrieved from the input

Other files