File: pro_line.h

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/*

  Copyright (C) 2000,2004 Silicon Graphics, Inc.  All Rights Reserved.
  Portions Copyright 2007-2010 Sun Microsystems, Inc. All rights reserved.
  Portions Copyright 2017  David Anderson  All rights reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of version 2.1 of the GNU Lesser General Public License
  as published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

  Further, this software is distributed without any warranty that it is
  free of the rightful claim of any third person regarding infringement
  or the like.  Any license provided herein, whether implied or
  otherwise, applies only to this software file.  Patent licenses, if
  any, provided herein do not apply to combinations of this program with
  other software, or any other product whatsoever.

  You should have received a copy of the GNU Lesser General Public
  License along with this program; if not, write the Free Software
  Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301,
  USA.

*/


#define DW_LINE_VERSION2   2
#define DW_LINE_VERSION3   3
#define DW_LINE_VERSION4   4

#if defined(__i386) || defined(__x86_64)
#define MIN_INST_LENGTH			1
#else
#define MIN_INST_LENGTH			4
#endif
#define DEFAULT_IS_STMT			false
/*  line base and range are temporarily defines.
    They need to be calculated later */
#define LINE_BASE   -1
#define LINE_RANGE   4

#define OPCODE_BASE  10 /* DWARF2.  13 in DWARF3, DWARF4 */
#define MAX_OPCODE   255



/* This struct holds file or include_dir
   entries for the statement prologue.
   Defined in pro_line.h */
struct Dwarf_P_F_Entry_s {
    char *dfe_name;
    Dwarf_P_F_Entry dfe_next;

    /* DWARF 2,3,4, files only not inc dirs */
    char *dfe_args;  /* has dir index, time of modification,
        length in bytes. Encodes as leb128 */
    int dfe_nbytes; /* number of bytes in args */

    /*  Dwarf5 Use or not depends on file_name_entry_format
        actually used.  */
    unsigned dfe_index;
    Dwarf_Unsigned dfe_timestamp;
    unsigned dfe_size;
    unsigned char dfe_md5[16];

};


/*
    Struct holding line number information for each of the producer
    line entries
*/
struct Dwarf_P_Line_s {
    /* code address */
    Dwarf_Addr dpl_address;

    /* file index, index into file entry */
    Dwarf_Word dpl_file;

    /* line number */
    Dwarf_Word dpl_line;

    /* column number */
    Dwarf_Word dpl_column;

    /* whether its a beginning of a stmt */
    Dwarf_Ubyte dpl_is_stmt;

    /* whether its a beginning of basic blk */
    Dwarf_Ubyte dpl_basic_block;

    /* used to store opcodes set_address, and end_seq */
    Dwarf_Ubyte dpl_opc;

    /*  Used only for relocations.  Has index of symbol relative to
        which relocation has to be done (the S part in S + A) */
    Dwarf_Unsigned dpl_r_symidx;

    Dwarf_P_Line dpl_next;

    Dwarf_Ubyte    dpl_prologue_end;   /* DWARF3 */
    Dwarf_Ubyte    dpl_epilogue_begin; /* DWARF3 */
    Dwarf_Unsigned dpl_isa;            /* DWARF3 */
    Dwarf_Unsigned dpl_discriminator;  /* DWARF4 */

};

/*
    to initialize state machine registers, definition in
    pro_line.c
*/
void _dwarf_pro_reg_init(Dwarf_P_Debug dbg,Dwarf_P_Line);

void _dwarf_init_default_line_header_vals(Dwarf_P_Debug dbg);