2002-08-22 Paolo Carlini <pcarlini@unitus.it>
[official-gcc.git] / gcc / xcoffout.h
blobafa7274dcc2f4f42ca8cbc7d755e2f41309ddf10
1 /* XCOFF definitions. These are needed in dbxout.c, final.c,
2 and xcoffout.h.
3 Copyright (C) 1998, 2000, 2002 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
10 version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
20 02111-1307, USA. */
23 #define ASM_STABS_OP "\t.stabx\t"
25 /* Tags and typedefs are C_DECL in XCOFF, not C_LSYM. */
27 #define DBX_TYPE_DECL_STABS_CODE N_DECL
29 /* Use the XCOFF predefined type numbers. */
31 /* ??? According to metin, typedef stabx must go in text control section,
32 but he did not make this changes everywhere where such typedef stabx
33 can be emitted, so it is really needed or not? */
35 #define DBX_OUTPUT_STANDARD_TYPES(SYMS) \
36 { \
37 text_section (); \
38 xcoff_output_standard_types (SYMS); \
41 /* Any type with a negative type index has already been output. */
43 #define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0)
45 /* Must use N_STSYM for static const variables (those in the text section)
46 instead of N_FUN. */
48 #define DBX_STATIC_CONST_VAR_CODE N_STSYM
50 /* For static variables, output code to define the start of a static block.
52 ??? The IBM rs6000/AIX assembler has a bug that causes bss block debug
53 info to be occasionally lost. A simple example is this:
54 int a; static int b;
55 The commands `gcc -g -c tmp.c; dump -t tmp.o' gives
56 [10] m 0x00000016 1 0 0x8f 0x0000 .bs
57 [11] m 0x00000000 1 0 0x90 0x0000 .es
58 ...
59 [21] m 0x00000000 -2 0 0x85 0x0000 b:S-1
60 which is wrong. The `b:S-1' must be between the `.bs' and `.es'.
61 We can apparently work around the problem by forcing the text section
62 (even if we are already in the text section) immediately before outputting
63 the `.bs'. This should be fixed in the next major AIX release (3.3?). */
65 #define DBX_STATIC_BLOCK_START(ASMFILE,CODE) \
66 { \
67 if ((CODE) == N_STSYM) \
68 fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\
69 else if ((CODE) == N_LCSYM) \
70 { \
71 fprintf ((ASMFILE), "%s\n", TEXT_SECTION_ASM_OP); \
72 fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \
73 } \
76 /* For static variables, output code to define the end of a static block. */
78 #define DBX_STATIC_BLOCK_END(ASMFILE,CODE) \
79 { \
80 if ((CODE) == N_STSYM || (CODE) == N_LCSYM) \
81 fputs ("\t.es\n", (ASMFILE)); \
84 /* We must use N_RPYSM instead of N_RSYM for register parameters. */
86 #define DBX_REGPARM_STABS_CODE N_RPSYM
88 /* We must use 'R' instead of 'P' for register parameters. */
90 #define DBX_REGPARM_STABS_LETTER 'R'
92 /* Define our own finish symbol function, since xcoff stabs have their
93 own different format. */
95 #define DBX_FINISH_SYMBOL(SYM) \
96 { \
97 if (current_sym_addr && current_sym_code == N_FUN) \
98 fprintf (asmfile, "\",."); \
99 else \
100 fprintf (asmfile, "\","); \
101 /* If we are writing a function name, we must ensure that \
102 there is no storage-class suffix on the name. */ \
103 if (current_sym_addr && current_sym_code == N_FUN \
104 && GET_CODE (current_sym_addr) == SYMBOL_REF) \
106 const char *_p = XSTR (current_sym_addr, 0); \
107 if (*_p == '*') \
108 fprintf (asmfile, "%s", _p+1); \
109 else \
110 for (; *_p != '[' && *_p; _p++) \
111 fprintf (asmfile, "%c", *_p); \
113 else if (current_sym_addr) \
114 output_addr_const (asmfile, current_sym_addr); \
115 else if (current_sym_code == N_GSYM) \
116 assemble_name (asmfile, XSTR (XEXP (DECL_RTL (sym), 0), 0)); \
117 else \
118 fprintf (asmfile, "%d", current_sym_value); \
119 fprintf (asmfile, ",%d,0\n", stab_to_sclass (current_sym_code)); \
122 /* These are IBM XCOFF extensions we need to reference in dbxout.c
123 and xcoffout.c. */
125 /* AIX XCOFF uses this for typedefs. This can have any value, since it is
126 only used for translation into a C_DECL storage class. */
127 #ifndef N_DECL
128 #define N_DECL 0x8c
129 #endif
130 /* AIX XCOFF uses this for parameters passed in registers. This can have
131 any value, since it is only used for translation into a C_RPSYM storage
132 class. */
133 #ifndef N_RPSYM
134 #define N_RPSYM 0x8e
135 #endif
137 /* Name of the current include file. */
139 extern const char *xcoff_current_include_file;
141 /* Names of bss and data sections. These should be unique names for each
142 compilation unit. */
144 extern char *xcoff_bss_section_name;
145 extern char *xcoff_private_data_section_name;
146 extern char *xcoff_read_only_section_name;
148 /* Last source file name mentioned in a NOTE insn. */
150 extern const char *xcoff_lastfile;
152 /* Don't write out path name for main source file. */
153 #define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(FILE,FILENAME)
155 /* Write out main source file name using ".file" rather than ".stabs".
156 We don't actually do this here, because the assembler gets confused if there
157 is more than one .file directive. ASM_FILE_START in config/rs6000/rs6000.h
158 is already emitting a .file directory, so we don't output one here also.
159 Initialize xcoff_lastfile. */
160 #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(FILE,FILENAME) \
161 xcoff_lastfile = (FILENAME)
163 /* If we are still in an include file, its end must be marked. */
164 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
166 if (xcoff_current_include_file) \
168 fputs ("\t.ei\t", (FILE)); \
169 output_quoted_string ((FILE), xcoff_current_include_file); \
170 putc ('\n', (FILE)); \
171 xcoff_current_include_file = NULL; \
175 /* .stabx has the type in a different place. */
176 #if 0 /* Do not emit any marker for XCOFF until assembler allows XFT_CV. */
177 #define DBX_OUTPUT_GCC_MARKER(FILE) \
178 fprintf ((FILE), "%s\"%s\",0,%d,0\n", ASM_STABS_OP, STABS_GCC_MARKER, \
179 stab_to_sclass (N_GSYM))
180 #else
181 #define DBX_OUTPUT_GCC_MARKER(FILE)
182 #endif
184 /* Do not break .stabs pseudos into continuations. */
185 #define DBX_CONTIN_LENGTH 0
187 /* Don't try to use the `x' type-cross-reference character in DBX data.
188 Also has the consequence of putting each struct, union or enum
189 into a separate .stabs, containing only cross-refs to the others. */
190 #define DBX_NO_XREFS
192 /* We must put stabs in the text section. If we don't the assembler
193 won't handle them correctly; it will sometimes put stabs where gdb
194 can't find them. */
196 #define DEBUG_SYMS_TEXT
198 /* Prototype functions in xcoffout.c. */
200 extern int stab_to_sclass PARAMS ((int));
201 #ifdef BUFSIZ
202 extern void xcoffout_begin_prologue PARAMS ((unsigned int,
203 const char *));
204 extern void xcoffout_begin_block PARAMS ((unsigned, unsigned));
205 extern void xcoffout_end_epilogue PARAMS ((unsigned int,
206 const char *));
207 extern void xcoffout_end_function PARAMS ((unsigned int));
208 extern void xcoffout_end_block PARAMS ((unsigned, unsigned));
209 #endif /* BUFSIZ */
211 #ifdef TREE_CODE
212 extern void xcoff_output_standard_types PARAMS ((tree));
213 #ifdef BUFSIZ
214 extern void xcoffout_declare_function PARAMS ((FILE *, tree, const char *));
215 #endif /* BUFSIZ */
216 #endif /* TREE_CODE */
218 #ifdef RTX_CODE
219 #ifdef BUFSIZ
220 extern void xcoffout_source_line PARAMS ((unsigned int,
221 const char *));
222 #endif /* BUFSIZ */
223 #endif /* RTX_CODE */