1 /* Definitions needed when using stabs embedded in ELF sections.
2 Copyright (C) 1999 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC 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 2, or (at your option)
11 GNU CC 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.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* This file may be included by any ELF target which wishes to
22 support -gstabs generating stabs in sections, as produced by gas
23 and understood by gdb. */
28 /* Output DBX (stabs) debugging information if doing -gstabs. */
30 #undef DBX_DEBUGGING_INFO
31 #define DBX_DEBUGGING_INFO
33 /* Make LBRAC and RBRAC addresses relative to the start of the
34 function. The native Solaris stabs debugging format works this
35 way, gdb expects it, and it reduces the number of relocation
38 #undef DBX_BLOCKS_FUNCTION_RELATIVE
39 #define DBX_BLOCKS_FUNCTION_RELATIVE 1
41 /* ... but, to make this work, functions must appear prior to line info. */
43 #undef DBX_FUNCTION_FIRST
44 #define DBX_FUNCTION_FIRST
46 /* When generating stabs debugging, use N_BINCL entries. */
51 /* There is no limit to the length of stabs strings. */
53 #ifndef DBX_CONTIN_LENGTH
54 #define DBX_CONTIN_LENGTH 0
57 /* When using stabs, gcc2_compiled must be a stabs entry, not an
58 ordinary symbol, or gdb won't see it. Furthermore, since gdb reads
59 the input piecemeal, starting with each N_SO, it's a lot easier if
60 the gcc2 flag symbol is *after* the N_SO rather than before it. So
61 we emit an N_OPT stab there. */
63 #define ASM_IDENTIFY_GCC(FILE) \
66 if (write_symbols != DBX_DEBUG) \
67 fputs ("gcc2_compiled.:\n", FILE); \
71 #define ASM_IDENTIFY_GCC_AFTER_SOURCE(FILE) \
74 if (write_symbols == DBX_DEBUG) \
75 fputs ("\t.stabs\t\"gcc2_compiled.\", 0x3c, 0, 0, 0\n", FILE); \
79 /* Like block addresses, stabs line numbers are relative to the
82 #undef ASM_OUTPUT_SOURCE_LINE
83 #define ASM_OUTPUT_SOURCE_LINE(FILE, LINE) \
86 static int sym_lineno = 1; \
88 ASM_GENERATE_INTERNAL_LABEL (temp, "LM", sym_lineno); \
89 fprintf (FILE, "\t.stabn 68,0,%d,", LINE); \
90 assemble_name (FILE, temp); \
92 assemble_name (FILE, \
93 XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0));\
95 ASM_OUTPUT_INTERNAL_LABEL (FILE, "LM", sym_lineno); \
100 /* Generate a blank trailing N_SO to mark the end of the .o file, since
101 we can't depend upon the linker to mark .o file boundaries with
104 #undef DBX_OUTPUT_MAIN_SOURCE_FILE_END
105 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
107 "\t.text\n\t.stabs \"\",%d,0,0,%LLetext\n%LLetext:\n", N_SO)
109 #endif /* __DBX_ELF_H */