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| 5222 | serge | 1 | /* dwarf2dbg.h - DWARF2 debug support |
| 2 | Copyright 1999, 2000, 2002, 2003, 2005, 2006, 2007, 2009 |
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| 3 | Free Software Foundation, Inc. |
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| 4 | |||
| 5 | This file is part of GAS, the GNU Assembler. |
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| 6 | |||
| 7 | GAS is free software; you can redistribute it and/or modify |
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| 8 | it under the terms of the GNU General Public License as published by |
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| 9 | the Free Software Foundation; either version 3, or (at your option) |
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| 10 | any later version. |
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| 11 | |||
| 12 | GAS is distributed in the hope that it will be useful, |
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | GNU General Public License for more details. |
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| 16 | |||
| 17 | You should have received a copy of the GNU General Public License |
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| 18 | along with GAS; see the file COPYING. If not, write to the Free |
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| 19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
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| 20 | 02110-1301, USA. */ |
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| 21 | |||
| 22 | #ifndef AS_DWARF2DBG_H |
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| 23 | #define AS_DWARF2DBG_H |
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| 24 | |||
| 25 | #include "as.h" |
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| 26 | |||
| 27 | #define DWARF2_FLAG_IS_STMT (1 << 0) |
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| 28 | #define DWARF2_FLAG_BASIC_BLOCK (1 << 1) |
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| 29 | #define DWARF2_FLAG_PROLOGUE_END (1 << 2) |
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| 30 | #define DWARF2_FLAG_EPILOGUE_BEGIN (1 << 3) |
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| 31 | |||
| 32 | struct dwarf2_line_info { |
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| 33 | unsigned int filenum; |
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| 34 | unsigned int line; |
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| 35 | unsigned int column; |
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| 36 | unsigned int isa; |
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| 37 | unsigned int flags; |
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| 38 | unsigned int discriminator; |
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| 39 | }; |
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| 40 | |||
| 41 | /* Implements the .file FILENO "FILENAME" directive. FILENO can be 0 |
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| 42 | to indicate that no file number has been assigned. All real file |
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| 43 | number must be >0. */ |
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| 44 | extern char *dwarf2_directive_file (int dummy); |
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| 45 | |||
| 46 | /* Implements the .loc FILENO LINENO [COLUMN] directive. FILENO is |
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| 47 | the file number, LINENO the line number and the (optional) COLUMN |
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| 48 | the column of the source code that the following instruction |
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| 49 | corresponds to. FILENO can be 0 to indicate that the filename |
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| 50 | specified by the textually most recent .file directive should be |
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| 51 | used. */ |
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| 52 | extern void dwarf2_directive_loc (int dummy); |
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| 53 | |||
| 54 | /* Implements the .loc_mark_labels {0,1} directive. */ |
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| 55 | extern void dwarf2_directive_loc_mark_labels (int dummy); |
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| 56 | |||
| 57 | /* Returns the current source information. If .file directives have |
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| 58 | been encountered, the info for the corresponding source file is |
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| 59 | returned. Otherwise, the info for the assembly source file is |
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| 60 | returned. */ |
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| 61 | extern void dwarf2_where (struct dwarf2_line_info *l); |
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| 62 | |||
| 63 | /* A hook to allow the target backend to inform the line number state |
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| 64 | machine of isa changes when assembler debug info is enabled. */ |
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| 65 | extern void dwarf2_set_isa (unsigned int isa); |
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| 66 | |||
| 67 | /* This function generates .debug_line info based on the address and |
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| 68 | source information passed in the arguments. ADDR should be the |
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| 69 | frag-relative offset of the instruction the information is for and |
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| 70 | L is the source information that should be associated with that |
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| 71 | address. */ |
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| 72 | extern void dwarf2_gen_line_info (addressT addr, struct dwarf2_line_info *l); |
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| 73 | |||
| 74 | /* Must be called for each generated instruction. */ |
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| 75 | extern void dwarf2_emit_insn (int); |
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| 76 | |||
| 77 | void dwarf2_move_insn (int); |
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| 78 | |||
| 79 | /* Reset the state of the line number information to reflect that |
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| 80 | it has been used. */ |
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| 81 | extern void dwarf2_consume_line_info (void); |
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| 82 | |||
| 83 | /* Should be called for each code label. */ |
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| 84 | extern void dwarf2_emit_label (symbolS *); |
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| 85 | |||
| 86 | /* True when we've seen a .loc directive recently. Used to avoid |
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| 87 | doing work when there's nothing to do. */ |
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| 88 | extern bfd_boolean dwarf2_loc_directive_seen; |
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| 89 | |||
| 90 | /* True when we're supposed to set the basic block mark whenever a label |
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| 91 | is seen. Unless the target is doing Something Weird, just call |
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| 92 | dwarf2_emit_label. */ |
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| 93 | extern bfd_boolean dwarf2_loc_mark_labels; |
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| 94 | |||
| 95 | extern void dwarf2_init (void); |
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| 96 | |||
| 97 | extern void dwarf2_finish (void); |
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| 98 | |||
| 99 | extern int dwarf2dbg_estimate_size_before_relax (fragS *); |
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| 100 | extern int dwarf2dbg_relax_frag (fragS *); |
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| 101 | extern void dwarf2dbg_convert_frag (fragS *); |
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| 102 | |||
| 103 | /* An enumeration which describes the sizes of offsets (to DWARF sections) |
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| 104 | and the mechanism by which the size is indicated. */ |
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| 105 | enum dwarf2_format { |
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| 106 | /* 32-bit format: the initial length field is 4 bytes long. */ |
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| 107 | dwarf2_format_32bit, |
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| 108 | /* DWARF3 64-bit format: the representation of the initial length |
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| 109 | (of a DWARF section) is 0xffffffff (4 bytes) followed by eight |
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| 110 | bytes indicating the actual length. */ |
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| 111 | dwarf2_format_64bit, |
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| 112 | /* SGI extension to DWARF2: The initial length is eight bytes. */ |
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| 113 | dwarf2_format_64bit_irix |
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| 114 | }; |
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| 115 | |||
| 116 | #endif /* AS_DWARF2DBG_H */ |