| 1 | /* dwarf2dbg.h - DWARF2 debug support
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| 2 | Copyright 1999, 2000 Free Software Foundation, Inc.
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| 3 |
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| 4 | This file is part of GAS, the GNU Assembler.
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| 5 |
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| 6 | GAS is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2, or (at your option)
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| 9 | any later version.
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| 10 |
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| 11 | GAS is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with GAS; see the file COPYING. If not, write to the Free
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| 18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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| 19 | 02111-1307, USA. */
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| 20 |
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| 21 | #ifndef AS_DWARF2DBG_H
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| 22 | #define AS_DWARF2DBG_H
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| 23 |
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| 24 | #include "as.h"
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| 25 |
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| 26 | #define DWARF2_FLAG_BEGIN_STMT (1 << 0) /* beginning of statement */
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| 27 | #define DWARF2_FLAG_BEGIN_BLOCK (1 << 1) /* beginning of basic block */
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| 28 |
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| 29 | struct dwarf2_line_info {
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| 30 | unsigned int filenum;
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| 31 | unsigned int line;
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| 32 | unsigned int column;
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| 33 | unsigned int flags;
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| 34 | };
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| 35 |
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| 36 | /* Implements the .file FILENO "FILENAME" directive. FILENO can be 0
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| 37 | to indicate that no file number has been assigned. All real file
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| 38 | number must be >0. */
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| 39 | extern char *dwarf2_directive_file PARAMS ((int dummy));
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| 40 |
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| 41 | /* Implements the .loc FILENO LINENO [COLUMN] directive. FILENO is
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| 42 | the file number, LINENO the line number and the (optional) COLUMN
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| 43 | the column of the source code that the following instruction
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| 44 | corresponds to. FILENO can be 0 to indicate that the filename
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| 45 | specified by the textually most recent .file directive should be
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| 46 | used. */
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| 47 | extern void dwarf2_directive_loc PARAMS ((int dummy));
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| 48 |
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| 49 | /* Returns the current source information. If .file directives have
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| 50 | been encountered, the info for the corresponding source file is
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| 51 | returned. Otherwise, the info for the assembly source file is
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| 52 | returned. */
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| 53 | extern void dwarf2_where PARAMS ((struct dwarf2_line_info *l));
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| 54 |
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| 55 | /* This function generates .debug_line info based on the address and
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| 56 | source information passed in the arguments. ADDR should be the
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| 57 | frag-relative offset of the instruction the information is for and
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| 58 | L is the source information that should be associated with that
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| 59 | address. */
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| 60 | extern void dwarf2_gen_line_info PARAMS ((addressT addr,
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| 61 | struct dwarf2_line_info *l));
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| 62 |
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| 63 | /* Must be called for each generated instruction. */
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| 64 | extern void dwarf2_emit_insn PARAMS ((int));
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| 65 |
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| 66 | extern void dwarf2_finish PARAMS ((void));
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| 67 |
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| 68 | extern int dwarf2dbg_estimate_size_before_relax PARAMS ((fragS *));
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| 69 | extern int dwarf2dbg_relax_frag PARAMS ((fragS *));
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| 70 | extern void dwarf2dbg_convert_frag PARAMS ((fragS *));
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| 71 |
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| 72 | /* An enumeration which describes the sizes of offsets (to DWARF sections)
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| 73 | and the mechanism by which the size is indicated. */
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| 74 | enum dwarf2_format {
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| 75 | /* 32-bit format: the initial length field is 4 bytes long. */
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| 76 | dwarf2_format_32bit,
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| 77 | /* DWARF3 64-bit format: the representation of the initial length
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| 78 | (of a DWARF section) is 0xffffffff (4 bytes) followed by eight
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| 79 | bytes indicating the actual length. */
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| 80 | dwarf2_format_64bit,
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| 81 | /* SGI extension to DWARF2: The initial length is eight bytes. */
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| 82 | dwarf2_format_64bit_irix
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| 83 | };
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| 84 |
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| 85 | #endif /* AS_DWARF2DBG_H */
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