| 1 | /* dwarf2dbg.h - DWARF2 debug support |
| 2 | Copyright (C) 1999-2019 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 3, 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_IS_STMT (1 << 0) |
| 27 | #define DWARF2_FLAG_BASIC_BLOCK (1 << 1) |
| 28 | #define DWARF2_FLAG_PROLOGUE_END (1 << 2) |
| 29 | #define DWARF2_FLAG_EPILOGUE_BEGIN (1 << 3) |
| 30 | |
| 31 | struct dwarf2_line_info |
| 32 | { |
| 33 | unsigned int filenum; |
| 34 | unsigned int line; |
| 35 | unsigned int column; |
| 36 | unsigned int isa; |
| 37 | unsigned int flags; |
| 38 | unsigned int discriminator; |
| 39 | symbolS *view; |
| 40 | }; |
| 41 | |
| 42 | /* Implements the .file FILENO "FILENAME" directive. FILENO can be 0 |
| 43 | to indicate that no file number has been assigned. All real file |
| 44 | number must be >0. The second form returns the filename extracted |
| 45 | from the input stream. */ |
| 46 | extern void dwarf2_directive_file (int); |
| 47 | extern char * dwarf2_directive_filename (void); |
| 48 | |
| 49 | /* Implements the .loc FILENO LINENO [COLUMN] directive. FILENO is |
| 50 | the file number, LINENO the line number and the (optional) COLUMN |
| 51 | the column of the source code that the following instruction |
| 52 | corresponds to. FILENO can be 0 to indicate that the filename |
| 53 | specified by the textually most recent .file directive should be |
| 54 | used. */ |
| 55 | extern void dwarf2_directive_loc (int); |
| 56 | |
| 57 | /* Implements the .loc_mark_labels {0,1} directive. */ |
| 58 | extern void dwarf2_directive_loc_mark_labels (int); |
| 59 | |
| 60 | /* Returns the current source information. If .file directives have |
| 61 | been encountered, the info for the corresponding source file is |
| 62 | returned. Otherwise, the info for the assembly source file is |
| 63 | returned. */ |
| 64 | extern void dwarf2_where (struct dwarf2_line_info *); |
| 65 | |
| 66 | /* A hook to allow the target backend to inform the line number state |
| 67 | machine of isa changes when assembler debug info is enabled. */ |
| 68 | extern void dwarf2_set_isa (unsigned int); |
| 69 | |
| 70 | /* This function generates .debug_line info based on the address and |
| 71 | source information passed in the arguments. ADDR should be the |
| 72 | frag-relative offset of the instruction the information is for and |
| 73 | L is the source information that should be associated with that |
| 74 | address. */ |
| 75 | extern void dwarf2_gen_line_info (addressT, struct dwarf2_line_info *); |
| 76 | |
| 77 | /* Must be called for each generated instruction. */ |
| 78 | extern void dwarf2_emit_insn (int); |
| 79 | |
| 80 | void dwarf2_move_insn (int); |
| 81 | |
| 82 | /* Reset the state of the line number information to reflect that |
| 83 | it has been used. */ |
| 84 | extern void dwarf2_consume_line_info (void); |
| 85 | |
| 86 | /* Should be called for each code label. */ |
| 87 | extern void dwarf2_emit_label (symbolS *); |
| 88 | |
| 89 | /* True when we've seen a .loc directive recently. Used to avoid |
| 90 | doing work when there's nothing to do. */ |
| 91 | extern bfd_boolean dwarf2_loc_directive_seen; |
| 92 | |
| 93 | /* True when we're supposed to set the basic block mark whenever a label |
| 94 | is seen. Unless the target is doing Something Weird, just call |
| 95 | dwarf2_emit_label. */ |
| 96 | extern bfd_boolean dwarf2_loc_mark_labels; |
| 97 | |
| 98 | extern void dwarf2_init (void); |
| 99 | |
| 100 | extern void dwarf2_finish (void); |
| 101 | |
| 102 | extern int dwarf2dbg_estimate_size_before_relax (fragS *); |
| 103 | extern int dwarf2dbg_relax_frag (fragS *); |
| 104 | extern void dwarf2dbg_convert_frag (fragS *); |
| 105 | |
| 106 | extern void dwarf2dbg_final_check (void); |
| 107 | |
| 108 | /* An enumeration which describes the sizes of offsets (to DWARF sections) |
| 109 | and the mechanism by which the size is indicated. */ |
| 110 | enum dwarf2_format |
| 111 | { |
| 112 | /* 32-bit format: the initial length field is 4 bytes long. */ |
| 113 | dwarf2_format_32bit, |
| 114 | /* DWARF3 64-bit format: the representation of the initial length |
| 115 | (of a DWARF section) is 0xffffffff (4 bytes) followed by eight |
| 116 | bytes indicating the actual length. */ |
| 117 | dwarf2_format_64bit, |
| 118 | /* SGI extension to DWARF2: The initial length is eight bytes. */ |
| 119 | dwarf2_format_64bit_irix |
| 120 | }; |
| 121 | |
| 122 | #endif /* AS_DWARF2DBG_H */ |