+/* dwarf2dbg.h - DWARF2 debug support
+ Copyright (C) 1999-2020 Free Software Foundation, Inc.
+
+ This file is part of GAS, the GNU Assembler.
+
+ GAS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
+
+ GAS is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
+
#ifndef AS_DWARF2DBG_H
#define AS_DWARF2DBG_H
#include "as.h"
-#define DWARF2_FLAG_BEGIN_STMT (1 << 0) /* beginning of statement */
-#define DWARF2_FLAG_BEGIN_BLOCK (1 << 1) /* beginning of basic block */
+#define DWARF2_FLAG_IS_STMT (1 << 0)
+#define DWARF2_FLAG_BASIC_BLOCK (1 << 1)
+#define DWARF2_FLAG_PROLOGUE_END (1 << 2)
+#define DWARF2_FLAG_EPILOGUE_BEGIN (1 << 3)
struct dwarf2_line_info
- {
- char *filename;
- unsigned int filenum;
- unsigned int line;
- unsigned int column;
- unsigned int flags;
- };
+{
+ unsigned int filenum;
+ unsigned int line;
+ unsigned int column;
+ unsigned int isa;
+ unsigned int flags;
+ unsigned int discriminator;
+ symbolS *view;
+};
/* Implements the .file FILENO "FILENAME" directive. FILENO can be 0
to indicate that no file number has been assigned. All real file
- number must be >0. */
-extern void dwarf2_directive_file PARAMS ((int dummy));
+ number must be >0. The second form returns the filename extracted
+ from the input stream. */
+extern void dwarf2_directive_file (int);
+extern char * dwarf2_directive_filename (void);
/* Implements the .loc FILENO LINENO [COLUMN] directive. FILENO is
the file number, LINENO the line number and the (optional) COLUMN
corresponds to. FILENO can be 0 to indicate that the filename
specified by the textually most recent .file directive should be
used. */
-extern void dwarf2_directive_loc PARAMS ((int dummy));
+extern void dwarf2_directive_loc (int);
+
+/* Implements the .loc_mark_labels {0,1} directive. */
+extern void dwarf2_directive_loc_mark_labels (int);
/* Returns the current source information. If .file directives have
been encountered, the info for the corresponding source file is
returned. Otherwise, the info for the assembly source file is
returned. */
-extern void dwarf2_where PARAMS ((struct dwarf2_line_info *l));
+extern void dwarf2_where (struct dwarf2_line_info *);
+
+/* A hook to allow the target backend to inform the line number state
+ machine of isa changes when assembler debug info is enabled. */
+extern void dwarf2_set_isa (unsigned int);
/* This function generates .debug_line info based on the address and
source information passed in the arguments. ADDR should be the
frag-relative offset of the instruction the information is for and
L is the source information that should be associated with that
- address. */
-extern void dwarf2_gen_line_info PARAMS ((bfd_vma addr,
- struct dwarf2_line_info *l));
+ address. */
+extern void dwarf2_gen_line_info (addressT, struct dwarf2_line_info *);
+
+/* Must be called for each generated instruction. */
+extern void dwarf2_emit_insn (int);
+
+void dwarf2_move_insn (int);
+
+/* Reset the state of the line number information to reflect that
+ it has been used. */
+extern void dwarf2_consume_line_info (void);
+
+/* Should be called for each code label. */
+extern void dwarf2_emit_label (symbolS *);
+
+/* True when we've seen a .loc directive recently. Used to avoid
+ doing work when there's nothing to do. */
+extern bfd_boolean dwarf2_loc_directive_seen;
+
+/* True when we're supposed to set the basic block mark whenever a label
+ is seen. Unless the target is doing Something Weird, just call
+ dwarf2_emit_label. */
+extern bfd_boolean dwarf2_loc_mark_labels;
+
+extern void dwarf2_init (void);
+
+extern void dwarf2_finish (void);
+
+extern int dwarf2dbg_estimate_size_before_relax (fragS *);
+extern int dwarf2dbg_relax_frag (fragS *);
+extern void dwarf2dbg_convert_frag (fragS *);
+
+extern void dwarf2dbg_final_check (void);
-/* Must be called after all other input is processed to finish up the
- .debug_line section. */
-extern void dwarf2_finish PARAMS ((void));
+/* An enumeration which describes the sizes of offsets (to DWARF sections)
+ and the mechanism by which the size is indicated. */
+enum dwarf2_format
+{
+ /* 32-bit format: the initial length field is 4 bytes long. */
+ dwarf2_format_32bit,
+ /* DWARF3 64-bit format: the representation of the initial length
+ (of a DWARF section) is 0xffffffff (4 bytes) followed by eight
+ bytes indicating the actual length. */
+ dwarf2_format_64bit,
+ /* SGI extension to DWARF2: The initial length is eight bytes. */
+ dwarf2_format_64bit_irix
+};
#endif /* AS_DWARF2DBG_H */