160484Sobrien/* dwarf2dbg.h - DWARF2 debug support 2218822Sdim Copyright 1999, 2000, 2002, 2003 Free Software Foundation, Inc. 360484Sobrien 460484Sobrien This file is part of GAS, the GNU Assembler. 560484Sobrien 660484Sobrien GAS is free software; you can redistribute it and/or modify 760484Sobrien it under the terms of the GNU General Public License as published by 860484Sobrien the Free Software Foundation; either version 2, or (at your option) 960484Sobrien any later version. 1060484Sobrien 1160484Sobrien GAS is distributed in the hope that it will be useful, 1260484Sobrien but WITHOUT ANY WARRANTY; without even the implied warranty of 1360484Sobrien MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1460484Sobrien GNU General Public License for more details. 1560484Sobrien 1660484Sobrien You should have received a copy of the GNU General Public License 1760484Sobrien along with GAS; see the file COPYING. If not, write to the Free 18218822Sdim Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 19218822Sdim 02110-1301, USA. */ 2060484Sobrien 2160484Sobrien#ifndef AS_DWARF2DBG_H 2260484Sobrien#define AS_DWARF2DBG_H 2360484Sobrien 2460484Sobrien#include "as.h" 2560484Sobrien 26218822Sdim#define DWARF2_FLAG_IS_STMT (1 << 0) 27218822Sdim#define DWARF2_FLAG_BASIC_BLOCK (1 << 1) 28218822Sdim#define DWARF2_FLAG_PROLOGUE_END (1 << 2) 29218822Sdim#define DWARF2_FLAG_EPILOGUE_BEGIN (1 << 3) 3060484Sobrien 3177298Sobrienstruct dwarf2_line_info { 3277298Sobrien unsigned int filenum; 3377298Sobrien unsigned int line; 3477298Sobrien unsigned int column; 35218822Sdim unsigned int isa; 3677298Sobrien unsigned int flags; 3777298Sobrien}; 3860484Sobrien 3960484Sobrien/* Implements the .file FILENO "FILENAME" directive. FILENO can be 0 4060484Sobrien to indicate that no file number has been assigned. All real file 4160484Sobrien number must be >0. */ 42130561Sobrienextern char *dwarf2_directive_file (int dummy); 4360484Sobrien 4460484Sobrien/* Implements the .loc FILENO LINENO [COLUMN] directive. FILENO is 4560484Sobrien the file number, LINENO the line number and the (optional) COLUMN 4660484Sobrien the column of the source code that the following instruction 4760484Sobrien corresponds to. FILENO can be 0 to indicate that the filename 4860484Sobrien specified by the textually most recent .file directive should be 4960484Sobrien used. */ 50130561Sobrienextern void dwarf2_directive_loc (int dummy); 5160484Sobrien 52218822Sdim/* Implements the .loc_mark_labels {0,1} directive. */ 53218822Sdimextern void dwarf2_directive_loc_mark_labels (int dummy); 54218822Sdim 5560484Sobrien/* Returns the current source information. If .file directives have 5660484Sobrien been encountered, the info for the corresponding source file is 5760484Sobrien returned. Otherwise, the info for the assembly source file is 5860484Sobrien returned. */ 59130561Sobrienextern void dwarf2_where (struct dwarf2_line_info *l); 6060484Sobrien 61218822Sdim/* A hook to allow the target backend to inform the line number state 62218822Sdim machine of isa changes when assembler debug info is enabled. */ 63218822Sdimextern void dwarf2_set_isa (unsigned int isa); 64218822Sdim 6560484Sobrien/* This function generates .debug_line info based on the address and 6660484Sobrien source information passed in the arguments. ADDR should be the 6760484Sobrien frag-relative offset of the instruction the information is for and 6860484Sobrien L is the source information that should be associated with that 6977298Sobrien address. */ 70130561Sobrienextern void dwarf2_gen_line_info (addressT addr, struct dwarf2_line_info *l); 7160484Sobrien 7277298Sobrien/* Must be called for each generated instruction. */ 73130561Sobrienextern void dwarf2_emit_insn (int); 7477298Sobrien 75218822Sdim/* Should be called for each code label. */ 76218822Sdimextern void dwarf2_emit_label (symbolS *); 77218822Sdim 78218822Sdim/* True when we're supposed to set the basic block mark whenever a label 79218822Sdim is seen. Unless the target is doing Something Weird, just call 80218822Sdim dwarf2_emit_label. */ 81218822Sdimbfd_boolean dwarf2_loc_mark_labels; 82218822Sdim 83130561Sobrienextern void dwarf2_finish (void); 8460484Sobrien 85130561Sobrienextern int dwarf2dbg_estimate_size_before_relax (fragS *); 86130561Sobrienextern int dwarf2dbg_relax_frag (fragS *); 87130561Sobrienextern void dwarf2dbg_convert_frag (fragS *); 8877298Sobrien 89130561Sobrien/* An enumeration which describes the sizes of offsets (to DWARF sections) 90130561Sobrien and the mechanism by which the size is indicated. */ 91130561Sobrienenum dwarf2_format { 92130561Sobrien /* 32-bit format: the initial length field is 4 bytes long. */ 93130561Sobrien dwarf2_format_32bit, 94130561Sobrien /* DWARF3 64-bit format: the representation of the initial length 95130561Sobrien (of a DWARF section) is 0xffffffff (4 bytes) followed by eight 96130561Sobrien bytes indicating the actual length. */ 97130561Sobrien dwarf2_format_64bit, 98130561Sobrien /* SGI extension to DWARF2: The initial length is eight bytes. */ 99130561Sobrien dwarf2_format_64bit_irix 100130561Sobrien}; 101130561Sobrien 10260484Sobrien#endif /* AS_DWARF2DBG_H */ 103