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      1 /*
      2  * DWARF2 debugging format
      3  *
      4  *  Copyright (C) 2006-2007  Peter Johnson
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
     16  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
     19  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     20  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     21  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     24  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25  * POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 #ifndef YASM_DWARF2_DBGFMT_H
     28 #define YASM_DWARF2_DBGFMT_H
     29 
     30 #define WITH_DWARF3 1
     31 
     32 typedef struct {
     33     char *pathname;         /* full filename */
     34     char *filename;         /* basename of full filename */
     35     unsigned long dir;      /* index into directories array for relative path;
     36                              * 0 for current directory. */
     37 } dwarf2_filename;
     38 
     39 /* Global data */
     40 typedef struct yasm_dbgfmt_dwarf2 {
     41     yasm_dbgfmt_base dbgfmt;        /* base structure */
     42 
     43     char **dirs;
     44     unsigned long dirs_size;
     45     unsigned long dirs_allocated;
     46 
     47     dwarf2_filename *filenames;
     48     unsigned long filenames_size;
     49     unsigned long filenames_allocated;
     50 
     51     enum {
     52         DWARF2_FORMAT_32BIT,
     53         DWARF2_FORMAT_64BIT
     54     } format;
     55 
     56     unsigned int sizeof_address, sizeof_offset, min_insn_len;
     57 } yasm_dbgfmt_dwarf2;
     58 
     59 /* .loc directive data */
     60 typedef struct dwarf2_loc {
     61     /*@reldef@*/ STAILQ_ENTRY(dwarf2_loc) link;
     62 
     63     unsigned long vline;    /* virtual line number of .loc directive */
     64 
     65     /* source information */
     66     unsigned long file;     /* index into table of filenames */
     67     unsigned long line;     /* source line number */
     68     unsigned long column;   /* source column */
     69     unsigned long discriminator;
     70     int isa_change;
     71     unsigned long isa;
     72     enum {
     73         IS_STMT_NOCHANGE = 0,
     74         IS_STMT_SET,
     75         IS_STMT_CLEAR
     76     } is_stmt;
     77     int basic_block;
     78     int prologue_end;
     79     int epilogue_begin;
     80 
     81     yasm_bytecode *bc;      /* first bytecode following */
     82     yasm_symrec *sym;       /* last symbol preceding */
     83 } dwarf2_loc;
     84 
     85 /* Per-section data */
     86 typedef struct dwarf2_section_data {
     87     /* The locations set by the .loc directives in this section, in assembly
     88      * source order.
     89      */
     90     /*@reldef@*/ STAILQ_HEAD(dwarf2_lochead, dwarf2_loc) locs;
     91 } dwarf2_section_data;
     92 
     93 extern const yasm_assoc_data_callback yasm_dwarf2__section_data_cb;
     94 
     95 yasm_bytecode *yasm_dwarf2__append_bc(yasm_section *sect, yasm_bytecode *bc);
     96 
     97 /*@dependent@*/ yasm_symrec *yasm_dwarf2__bc_sym(yasm_symtab *symtab,
     98                                                  yasm_bytecode *bc);
     99 
    100 typedef struct dwarf2_head dwarf2_head;
    101 dwarf2_head *yasm_dwarf2__add_head
    102     (yasm_dbgfmt_dwarf2 *dbgfmt_dwarf2, yasm_section *sect,
    103      /*@null@*/ yasm_section *debug_ptr, int with_address, int with_segment);
    104 void yasm_dwarf2__set_head_end(dwarf2_head *head, yasm_bytecode *end_prevbc);
    105 
    106 /* Line number functions */
    107 yasm_section *yasm_dwarf2__generate_line
    108     (yasm_object *object, yasm_linemap *linemap, yasm_errwarns *errwarns,
    109      int asm_source, /*@out@*/ yasm_section **main_code,
    110      /*@out@*/ size_t *num_line_sections);
    111 void yasm_dwarf2__dir_loc(yasm_object *object, yasm_valparamhead *valparams,
    112                           yasm_valparamhead *objext_valparams,
    113                           unsigned long line);
    114 void yasm_dwarf2__dir_file(yasm_object *object, yasm_valparamhead *valparams,
    115                            yasm_valparamhead *objext_valparams,
    116                            unsigned long line);
    117 
    118 /* Address range table functions */
    119 yasm_section *yasm_dwarf2__generate_aranges(yasm_object *object,
    120                                             yasm_section *debug_info);
    121 
    122 /* Name lookup table functions */
    123 yasm_section *yasm_dwarf2__generate_pubnames(yasm_object *object,
    124                                              yasm_section *debug_info);
    125 
    126 /* Information functions */
    127 yasm_section *yasm_dwarf2__generate_info
    128     (yasm_object *object, yasm_section *debug_line,
    129      /*@null@*/ yasm_section *main_code);
    130 
    131 #endif
    132