1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/* XCOFF definitions. These are needed in dbxout.c, final.c,
and xcoffout.h.
Copyright (C) 1998, 2000 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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 2, or (at your option) any later
version.
GCC 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 GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#define ASM_STABS_OP "\t.stabx\t"
/* Tags and typedefs are C_DECL in XCOFF, not C_LSYM. */
#define DBX_TYPE_DECL_STABS_CODE N_DECL
/* Use the XCOFF predefined type numbers. */
/* ??? According to metin, typedef stabx must go in text control section,
but he did not make this changes everywhere where such typedef stabx
can be emitted, so it is really needed or not? */
#define DBX_OUTPUT_STANDARD_TYPES(SYMS) \
{ \
text_section (); \
xcoff_output_standard_types (SYMS); \
}
/* Any type with a negative type index has already been output. */
#define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0)
/* Must use N_STSYM for static const variables (those in the text section)
instead of N_FUN. */
#define DBX_STATIC_CONST_VAR_CODE N_STSYM
/* For static variables, output code to define the start of a static block.
??? The IBM rs6000/AIX assembler has a bug that causes bss block debug
info to be occasionally lost. A simple example is this:
int a; static int b;
The commands `gcc -g -c tmp.c; dump -t tmp.o' gives
[10] m 0x00000016 1 0 0x8f 0x0000 .bs
[11] m 0x00000000 1 0 0x90 0x0000 .es
...
[21] m 0x00000000 -2 0 0x85 0x0000 b:S-1
which is wrong. The `b:S-1' must be between the `.bs' and `.es'.
We can apparently work around the problem by forcing the text section
(even if we are already in the text section) immediately before outputting
the `.bs'. This should be fixed in the next major AIX release (3.3?). */
#define DBX_STATIC_BLOCK_START(ASMFILE,CODE) \
{ \
if ((CODE) == N_STSYM) \
fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\
else if ((CODE) == N_LCSYM) \
{ \
fprintf ((ASMFILE), "%s\n", TEXT_SECTION_ASM_OP); \
fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \
} \
}
/* For static variables, output code to define the end of a static block. */
#define DBX_STATIC_BLOCK_END(ASMFILE,CODE) \
{ \
if ((CODE) == N_STSYM || (CODE) == N_LCSYM) \
fputs ("\t.es\n", (ASMFILE)); \
}
/* We must use N_RPYSM instead of N_RSYM for register parameters. */
#define DBX_REGPARM_STABS_CODE N_RPSYM
/* We must use 'R' instead of 'P' for register parameters. */
#define DBX_REGPARM_STABS_LETTER 'R'
/* Define our own finish symbol function, since xcoff stabs have their
own different format. */
#define DBX_FINISH_SYMBOL(SYM) \
{ \
if (current_sym_addr && current_sym_code == N_FUN) \
fprintf (asmfile, "\",."); \
else \
fprintf (asmfile, "\","); \
/* If we are writing a function name, we must ensure that \
there is no storage-class suffix on the name. */ \
if (current_sym_addr && current_sym_code == N_FUN \
&& GET_CODE (current_sym_addr) == SYMBOL_REF) \
{ \
const char *_p = XSTR (current_sym_addr, 0); \
if (*_p == '*') \
fprintf (asmfile, "%s", _p+1); \
else \
for (; *_p != '[' && *_p; _p++) \
fprintf (asmfile, "%c", *_p); \
} \
else if (current_sym_addr) \
output_addr_const (asmfile, current_sym_addr); \
else if (current_sym_code == N_GSYM) \
assemble_name (asmfile, XSTR (XEXP (DECL_RTL (sym), 0), 0)); \
else \
fprintf (asmfile, "%d", current_sym_value); \
fprintf (asmfile, ",%d,0\n", stab_to_sclass (current_sym_code)); \
}
/* These are IBM XCOFF extensions we need to reference in dbxout.c
and xcoffout.c. */
/* AIX XCOFF uses this for typedefs. This can have any value, since it is
only used for translation into a C_DECL storage class. */
#ifndef N_DECL
#define N_DECL 0x8c
#endif
/* AIX XCOFF uses this for parameters passed in registers. This can have
any value, since it is only used for translation into a C_RPSYM storage
class. */
#ifndef N_RPSYM
#define N_RPSYM 0x8e
#endif
/* Name of the current include file. */
extern const char *xcoff_current_include_file;
/* Names of bss and data sections. These should be unique names for each
compilation unit. */
extern char *xcoff_bss_section_name;
extern char *xcoff_private_data_section_name;
extern char *xcoff_read_only_section_name;
/* Last source file name mentioned in a NOTE insn. */
extern const char *xcoff_lastfile;
/* Don't write out path name for main source file. */
#define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(FILE,FILENAME)
/* Write out main source file name using ".file" rather than ".stabs".
We don't actually do this here, because the assembler gets confused if there
is more than one .file directive. ASM_FILE_START in config/rs6000/rs6000.h
is already emitting a .file directory, so we don't output one here also.
Initialize xcoff_lastfile. */
#define DBX_OUTPUT_MAIN_SOURCE_FILENAME(FILE,FILENAME) \
xcoff_lastfile = (FILENAME)
/* If we are still in an include file, its end must be marked. */
#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
{ \
if (xcoff_current_include_file) \
{ \
fputs ("\t.ei\t", (FILE)); \
output_quoted_string ((FILE), xcoff_current_include_file); \
putc ('\n', (FILE)); \
xcoff_current_include_file = NULL; \
} \
}
/* .stabx has the type in a different place. */
#if 0 /* Do not emit any marker for XCOFF until assembler allows XFT_CV. */
#define DBX_OUTPUT_GCC_MARKER(FILE) \
fprintf ((FILE), "%s\"%s\",0,%d,0\n", ASM_STABS_OP, STABS_GCC_MARKER, \
stab_to_sclass (N_GSYM))
#else
#define DBX_OUTPUT_GCC_MARKER(FILE)
#endif
/* Do not break .stabs pseudos into continuations. */
#define DBX_CONTIN_LENGTH 0
/* Don't try to use the `x' type-cross-reference character in DBX data.
Also has the consequence of putting each struct, union or enum
into a separate .stabs, containing only cross-refs to the others. */
#define DBX_NO_XREFS
/* We must put stabs in the text section. If we don't the assembler
won't handle them correctly; it will sometimes put stabs where gdb
can't find them. */
#define DEBUG_SYMS_TEXT
/* Prototype functions in xcoffout.c. */
extern int stab_to_sclass PARAMS ((int));
#ifdef BUFSIZ
extern void xcoffout_begin_prologue PARAMS ((unsigned int,
const char *));
extern void xcoffout_begin_block PARAMS ((unsigned, unsigned));
extern void xcoffout_end_epilogue PARAMS ((void));
extern void xcoffout_end_function PARAMS ((unsigned int));
extern void xcoffout_end_block PARAMS ((unsigned, unsigned));
#endif /* BUFSIZ */
#ifdef TREE_CODE
extern void xcoff_output_standard_types PARAMS ((tree));
#ifdef BUFSIZ
extern void xcoffout_declare_function PARAMS ((FILE *, tree, const char *));
#endif /* BUFSIZ */
#endif /* TREE_CODE */
#ifdef RTX_CODE
#ifdef BUFSIZ
extern void xcoffout_source_line PARAMS ((unsigned int,
const char *));
#endif /* BUFSIZ */
#endif /* RTX_CODE */
|
