asm.h

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//
// srecord - manipulate eprom load files
// Copyright (C) 2003, 2006-2008, 2010 Peter Miller
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see
// <http://www.gnu.org/licenses/>.
//
 
#ifndef SRECORD_OUTPUT_FILE_ASM_H
#define SRECORD_OUTPUT_FILE_ASM_H
 
#include <srecord/output/file.h>
#include <srecord/interval.h>
 
namespace srecord
{
 
/**
  * The srecord::output_file_asm class is used to represent an output file
  * which emits assembler code.
  */
class output_file_asm:
    public output_file
{
public:
    /**
      * The destructor.
      */
    virtual ~output_file_asm();
 
private:
    /**
      * The constructor.
      *
      * @param file_name
      *     The name of the file to be written.
      */
    output_file_asm(const std::string &file_name);
 
public:
    /**
      * The create class method is used to create new dynamically
      * allocated instances of this class.
      *
      * @param file_name
      *     The file name to open to write data to.  The name "-" is
      *     understood to mean the standard output.
      */
    static pointer create(const std::string &file_name);
 
protected:
    // See base class for documentation.
    void write(const record &);
 
    // See base class for documentation.
    void line_length_set(int);
 
    // See base class for documentation.
    void address_length_set(int);
 
    // See base class for documentation.
    int preferred_block_size_get() const;
 
    // See base class for documentation.
    bool preferred_block_size_set(int nbytes);
 
    // See base class for documentation.
    void command_line(arglex_tool *cmdln);
 
    // See base class for documentation.
    const char *format_name() const;
 
private:
    /**
      * The prefix instance variable is used to remember the variable
      * name prefix to be used in the output.
      */
    std::string prefix;
 
    /**
      * The taddr instance variabel is used to remember the
      * termination address, to be emitted in the footer.
      */
    unsigned long taddr;
 
    /**
      * The range instance variable is used to remember the range
      * of addresses present in the output.
      */
    interval range;
 
    /**
      * The column instance variable is used to remember the current
      * printing column on the line.
      */
    int column;
 
    /**
      * The current_address instance variabel is used to remember
      * the current address that the file is positioned at.  This is
      * used to know whether we need to add padding.
      */
    unsigned long current_address;
 
    /**
      * The line_length instance variable is used to remember the
      * maximum line length.  The output usually does not exceed it.
      */
    int line_length;
 
    /**
      * The org_warn instance variable is used to remember if the ORG
      * directive warning comment has been issued.
      */
    bool org_warn;
 
    /**
      * The output_word instance variable is used to remember whether or not
      * the input bytes should be emitted as word.
      */
    bool output_word;
 
    /**
      * The emit_byte method is used to emit a single byte.  It uses
      * column to track the position, so as not to exceed line_length.
      */
    void emit_byte(int);
 
    /**
      * The emit_word method is used to emit 2 byte.  It uses
      * column to track the position, so as not to exceed line_length.
      * It is called by output_word addition.
      */
    void emit_word(unsigned int);
 
    /**
      * The emit_4byte method is used to emit a double word (4 Byte).  It uses
      * column to track the position, so as not to exceed line_length.
      */
    void emit_4byte_array(unsigned long *);
 
    /**
      * The dot_style instance variable is used to remember whether or
      * not "dot" style pseudo-ops are being used.  Such as:
      *
      *     not dot_style  dot_style
      *     -------------  ------------------------
      *     DB             .byte
      *     DL             .long
      *     DW             .short
      *     END            .end
      *     ORG            .org
      *     PUBLIC         .global
      */
    bool dot_style;
 
    /**
      * The section_style instance variable is used to remember whether
      * or not the output is to contain "sections".
      *
      * In non-section output, the output uses ORG (.org) directives to
      * place the code at the appropriate addresses.  In section output,
      * tables of addresses and lenthgs are emitted, and the actual data
      * is intended to be relocated at run time.
      */
    bool section_style;
 
    /**
      * The hex_style is used to reember whether or not we are using
      * hexadecimal constatnts or decimal constants.
      */
    bool hex_style;
 
    /**
      * The default constructor.  Do not use.
      */
    output_file_asm();
 
    /**
      * The copy constructor.  Do not use.
      */
    output_file_asm(const output_file_asm &);
 
    /**
      * The assignment operator.  Do not use.
      */
    output_file_asm &operator=(const output_file_asm &);
};
 
};
 
#endif // SRECORD_OUTPUT_FILE_ASM_H