gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gas / dwarf2dbg.h

diff --git a/gas/dwarf2dbg.h b/gas/dwarf2dbg.h
index 50f5c60115f82bdc84a434705f5a90d0a632c19d..c5ff24a26227429d219ff008114a3629bce2290a 100644 (file)
--- a/gas/dwarf2dbg.h
+++ b/gas/dwarf2dbg.h
@@ -1,24 +1,50 @@
+/* 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
@@ -26,24 +52,71 @@ extern void dwarf2_directive_file PARAMS ((int dummy));
    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 ((addressT 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 */