| 1 | /* dwarf2dbg.h - DWARF2 debug support |
| 2 | Copyright 1999, 2000, 2002, 2003 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GAS, the GNU Assembler. |
| 5 | |
| 6 | GAS is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GAS is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GAS; see the file COPYING. If not, write to the Free |
| 18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 19 | 02110-1301, USA. */ |
| 20 | |
| 21 | #ifndef AS_DWARF2DBG_H |
| 22 | #define AS_DWARF2DBG_H |
| 23 | |
| 24 | #include "as.h" |
| 25 | |
| 26 | #define DWARF2_FLAG_BEGIN_STMT (1 << 0) /* beginning of statement */ |
| 27 | #define DWARF2_FLAG_BEGIN_BLOCK (1 << 1) /* beginning of basic block */ |
| 28 | |
| 29 | struct dwarf2_line_info { |
| 30 | unsigned int filenum; |
| 31 | unsigned int line; |
| 32 | unsigned int column; |
| 33 | unsigned int flags; |
| 34 | }; |
| 35 | |
| 36 | /* Implements the .file FILENO "FILENAME" directive. FILENO can be 0 |
| 37 | to indicate that no file number has been assigned. All real file |
| 38 | number must be >0. */ |
| 39 | extern char *dwarf2_directive_file (int dummy); |
| 40 | |
| 41 | /* Implements the .loc FILENO LINENO [COLUMN] directive. FILENO is |
| 42 | the file number, LINENO the line number and the (optional) COLUMN |
| 43 | the column of the source code that the following instruction |
| 44 | corresponds to. FILENO can be 0 to indicate that the filename |
| 45 | specified by the textually most recent .file directive should be |
| 46 | used. */ |
| 47 | extern void dwarf2_directive_loc (int dummy); |
| 48 | |
| 49 | /* Returns the current source information. If .file directives have |
| 50 | been encountered, the info for the corresponding source file is |
| 51 | returned. Otherwise, the info for the assembly source file is |
| 52 | returned. */ |
| 53 | extern void dwarf2_where (struct dwarf2_line_info *l); |
| 54 | |
| 55 | /* This function generates .debug_line info based on the address and |
| 56 | source information passed in the arguments. ADDR should be the |
| 57 | frag-relative offset of the instruction the information is for and |
| 58 | L is the source information that should be associated with that |
| 59 | address. */ |
| 60 | extern void dwarf2_gen_line_info (addressT addr, struct dwarf2_line_info *l); |
| 61 | |
| 62 | /* Must be called for each generated instruction. */ |
| 63 | extern void dwarf2_emit_insn (int); |
| 64 | |
| 65 | extern void dwarf2_finish (void); |
| 66 | |
| 67 | extern int dwarf2dbg_estimate_size_before_relax (fragS *); |
| 68 | extern int dwarf2dbg_relax_frag (fragS *); |
| 69 | extern void dwarf2dbg_convert_frag (fragS *); |
| 70 | |
| 71 | /* An enumeration which describes the sizes of offsets (to DWARF sections) |
| 72 | and the mechanism by which the size is indicated. */ |
| 73 | enum dwarf2_format { |
| 74 | /* 32-bit format: the initial length field is 4 bytes long. */ |
| 75 | dwarf2_format_32bit, |
| 76 | /* DWARF3 64-bit format: the representation of the initial length |
| 77 | (of a DWARF section) is 0xffffffff (4 bytes) followed by eight |
| 78 | bytes indicating the actual length. */ |
| 79 | dwarf2_format_64bit, |
| 80 | /* SGI extension to DWARF2: The initial length is eight bytes. */ |
| 81 | dwarf2_format_64bit_irix |
| 82 | }; |
| 83 | |
| 84 | #endif /* AS_DWARF2DBG_H */ |