/*
 * DWARF2 debugging format
 *
 *  Copyright (C) 2006-2007  Peter Johnson
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef YASM_DWARF2_DBGFMT_H
#define YASM_DWARF2_DBGFMT_H

#define WITH_DWARF3 1

typedef struct {
    char *pathname;         /* full filename */
    char *filename;         /* basename of full filename */
    unsigned long dir;      /* index into directories array for relative path;
                             * 0 for current directory. */
} dwarf2_filename;

/* Global data */
typedef struct yasm_dbgfmt_dwarf2 {
    yasm_dbgfmt_base dbgfmt;        /* base structure */

    char **dirs;
    unsigned long dirs_size;
    unsigned long dirs_allocated;

    dwarf2_filename *filenames;
    unsigned long filenames_size;
    unsigned long filenames_allocated;

    enum {
        DWARF2_FORMAT_32BIT,
        DWARF2_FORMAT_64BIT
    } format;

    unsigned int sizeof_address, sizeof_offset, min_insn_len;
} yasm_dbgfmt_dwarf2;

/* .loc directive data */
typedef struct dwarf2_loc {
    /*@reldef@*/ STAILQ_ENTRY(dwarf2_loc) link;

    unsigned long vline;    /* virtual line number of .loc directive */

    /* source information */
    unsigned long file;     /* index into table of filenames */
    unsigned long line;     /* source line number */
    unsigned long column;   /* source column */
    unsigned long discriminator;
    int isa_change;
    unsigned long isa;
    enum {
        IS_STMT_NOCHANGE = 0,
        IS_STMT_SET,
        IS_STMT_CLEAR
    } is_stmt;
    int basic_block;
    int prologue_end;
    int epilogue_begin;

    yasm_bytecode *bc;      /* first bytecode following */
    yasm_symrec *sym;       /* last symbol preceding */
} dwarf2_loc;

/* Per-section data */
typedef struct dwarf2_section_data {
    /* The locations set by the .loc directives in this section, in assembly
     * source order.
     */
    /*@reldef@*/ STAILQ_HEAD(dwarf2_lochead, dwarf2_loc) locs;
} dwarf2_section_data;

extern const yasm_assoc_data_callback yasm_dwarf2__section_data_cb;

yasm_bytecode *yasm_dwarf2__append_bc(yasm_section *sect, yasm_bytecode *bc);

/*@dependent@*/ yasm_symrec *yasm_dwarf2__bc_sym(yasm_symtab *symtab,
                                                 yasm_bytecode *bc);

typedef struct dwarf2_head dwarf2_head;
dwarf2_head *yasm_dwarf2__add_head
    (yasm_dbgfmt_dwarf2 *dbgfmt_dwarf2, yasm_section *sect,
     /*@null@*/ yasm_section *debug_ptr, int with_address, int with_segment);
void yasm_dwarf2__set_head_end(dwarf2_head *head, yasm_bytecode *end_prevbc);

/* Line number functions */
yasm_section *yasm_dwarf2__generate_line
    (yasm_object *object, yasm_linemap *linemap, yasm_errwarns *errwarns,
     int asm_source, /*@out@*/ yasm_section **main_code,
     /*@out@*/ size_t *num_line_sections);
void yasm_dwarf2__dir_loc(yasm_object *object, yasm_valparamhead *valparams,
                          yasm_valparamhead *objext_valparams,
                          unsigned long line);
void yasm_dwarf2__dir_file(yasm_object *object, yasm_valparamhead *valparams,
                           yasm_valparamhead *objext_valparams,
                           unsigned long line);

/* Address range table functions */
yasm_section *yasm_dwarf2__generate_aranges(yasm_object *object,
                                            yasm_section *debug_info);

/* Name lookup table functions */
yasm_section *yasm_dwarf2__generate_pubnames(yasm_object *object,
                                             yasm_section *debug_info);

/* Information functions */
yasm_section *yasm_dwarf2__generate_info
    (yasm_object *object, yasm_section *debug_line,
     /*@null@*/ yasm_section *main_code);

#endif