gcc/xcoffout.h

   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.
   4
   5 This file is part of GCC.
   6
   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.
  11
  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.
  16
  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.  */
  21
  22
  23 #define ASM_STABS_OP "\t.stabx\t"
  24
  25 /* Tags and typedefs are C_DECL in XCOFF, not C_LSYM.  */
  26
  27 #define DBX_TYPE_DECL_STABS_CODE N_DECL
  28
  29 /* Use the XCOFF predefined type numbers.  */
  30
  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?  */
  34
  35 #define DBX_OUTPUT_STANDARD_TYPES(SYMS)         \
  36 {                                               \
  37   text_section ();                              \
  38   xcoff_output_standard_types (SYMS);           \
  39 }
  40
  41 /* Any type with a negative type index has already been output.  */
  42
  43 #define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0)
  44
  45 /* Must use N_STSYM for static const variables (those in the text section)
  46    instead of N_FUN.  */
  47
  48 #define DBX_STATIC_CONST_VAR_CODE N_STSYM
  49
  50 /* For static variables, output code to define the start of a static block.  */
  51
  52 #define DBX_STATIC_BLOCK_START(ASMFILE,CODE)                            \
  53 {                                                                       \
  54   if ((CODE) == N_STSYM)                                                \
  55     fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\
  56   else if ((CODE) == N_LCSYM)                                           \
  57     fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \
  58 }
  59
  60 /* For static variables, output code to define the end of a static block.  */
  61
  62 #define DBX_STATIC_BLOCK_END(ASMFILE,CODE)                              \
  63 {                                                                       \
  64   if ((CODE) == N_STSYM || (CODE) == N_LCSYM)                           \
  65     fputs ("\t.es\n", (ASMFILE));                                       \
  66 }
  67
  68 /* We must use N_RPYSM instead of N_RSYM for register parameters.  */
  69
  70 #define DBX_REGPARM_STABS_CODE N_RPSYM
  71
  72 /* We must use 'R' instead of 'P' for register parameters.  */
  73
  74 #define DBX_REGPARM_STABS_LETTER 'R'
  75
  76 /* Define our own finish symbol function, since xcoff stabs have their
  77    own different format.  */
  78
  79 #define DBX_FINISH_SYMBOL(SYM)                                  \
  80 {                                                               \
  81   if (current_sym_addr && current_sym_code == N_FUN)            \
  82     fprintf (asmfile, "\",.");                                  \
  83   else                                                          \
  84     fprintf (asmfile, "\",");                                   \
  85   /* If we are writing a function name, we must ensure that     \
  86      there is no storage-class suffix on the name.  */          \
  87   if (current_sym_addr && current_sym_code == N_FUN             \
  88       && GET_CODE (current_sym_addr) == SYMBOL_REF)             \
  89     {                                                           \
  90       const char *_p = XSTR (current_sym_addr, 0);              \
  91       if (*_p == '*')                                           \
  92         fprintf (asmfile, "%s", _p+1);                          \
  93       else                                                      \
  94         for (; *_p != '[' && *_p; _p++)                         \
  95           fprintf (asmfile, "%c", *_p);                         \
  96     }                                                           \
  97   else if (current_sym_addr)                                    \
  98     output_addr_const (asmfile, current_sym_addr);              \
  99   else if (current_sym_code == N_GSYM)                          \
 100     assemble_name (asmfile, XSTR (XEXP (DECL_RTL (sym), 0), 0)); \
 101   else                                                          \
 102     fprintf (asmfile, "%d", current_sym_value);                 \
 103   fprintf (asmfile, ",%d,0\n", stab_to_sclass (current_sym_code)); \
 104 }
 105
 106 /* These are IBM XCOFF extensions we need to reference in dbxout.c
 107    and xcoffout.c.  */
 108
 109 /* AIX XCOFF uses this for typedefs.  This can have any value, since it is
 110    only used for translation into a C_DECL storage class.  */
 111 #ifndef N_DECL
 112 #define N_DECL 0x8c
 113 #endif
 114 /* AIX XCOFF uses this for parameters passed in registers.  This can have
 115    any value, since it is only used for translation into a C_RPSYM storage
 116    class.  */
 117 #ifndef N_RPSYM
 118 #define N_RPSYM 0x8e
 119 #endif
 120
 121 /* Name of the current include file.  */
 122
 123 extern const char *xcoff_current_include_file;
 124
 125 /* Names of bss and data sections.  These should be unique names for each
 126    compilation unit.  */
 127
 128 extern char *xcoff_bss_section_name;
 129 extern char *xcoff_private_data_section_name;
 130 extern char *xcoff_read_only_section_name;
 131
 132 /* Last source file name mentioned in a NOTE insn.  */
 133
 134 extern const char *xcoff_lastfile;
 135
 136 /* Don't write out path name for main source file.  */
 137 #define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(FILE,FILENAME)
 138
 139 /* Write out main source file name using ".file" rather than ".stabs".
 140    We don't actually do this here, because the assembler gets confused if there
 141    is more than one .file directive.  rs6000_xcoff_file_start is already
 142    emitting a .file directory, so we don't output one here also.
 143    Initialize xcoff_lastfile.  */
 144 #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(FILE,FILENAME) \
 145   xcoff_lastfile = (FILENAME)
 146
 147 /* If we are still in an include file, its end must be marked.  */
 148 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
 149 {                                                       \
 150   if (xcoff_current_include_file)                       \
 151     {                                                   \
 152       fputs ("\t.ei\t", (FILE));                        \
 153       output_quoted_string ((FILE), xcoff_current_include_file);        \
 154       putc ('\n', (FILE));                              \
 155       xcoff_current_include_file = NULL;                \
 156     }                                                   \
 157 }
 158
 159 /* .stabx has the type in a different place.  */
 160 #if 0  /* Do not emit any marker for XCOFF until assembler allows XFT_CV.  */
 161 #define DBX_OUTPUT_GCC_MARKER(FILE) \
 162   fprintf ((FILE), "%s\"%s\",0,%d,0\n", ASM_STABS_OP, STABS_GCC_MARKER, \
 163            stab_to_sclass (N_GSYM))
 164 #else
 165 #define DBX_OUTPUT_GCC_MARKER(FILE)
 166 #endif
 167
 168 /* Do not break .stabs pseudos into continuations.  */
 169 #define DBX_CONTIN_LENGTH 0
 170
 171 /* Don't try to use the `x' type-cross-reference character in DBX data.
 172    Also has the consequence of putting each struct, union or enum
 173    into a separate .stabs, containing only cross-refs to the others.  */
 174 #define DBX_NO_XREFS
 175
 176 /* We must put stabs in the text section.  If we don't the assembler
 177    won't handle them correctly; it will sometimes put stabs where gdb
 178    can't find them.  */
 179
 180 #define DEBUG_SYMS_TEXT
 181
 182 /* Prototype functions in xcoffout.c.  */
 183
 184 extern int stab_to_sclass                       PARAMS ((int));
 185 #ifdef BUFSIZ
 186 extern void xcoffout_begin_prologue             PARAMS ((unsigned int,
 187                                                          const char *));
 188 extern void xcoffout_begin_block                PARAMS ((unsigned, unsigned));
 189 extern void xcoffout_end_epilogue               PARAMS ((unsigned int,
 190                                                          const char *));
 191 extern void xcoffout_end_function               PARAMS ((unsigned int));
 192 extern void xcoffout_end_block                  PARAMS ((unsigned, unsigned));
 193 #endif /* BUFSIZ */
 194
 195 #ifdef TREE_CODE
 196 extern void xcoff_output_standard_types         PARAMS ((tree));
 197 #ifdef BUFSIZ
 198 extern void xcoffout_declare_function           PARAMS ((FILE *, tree, const char *));
 199 #endif /* BUFSIZ */
 200 #endif /* TREE_CODE */
 201
 202 #ifdef RTX_CODE
 203 #ifdef BUFSIZ
 204 extern void xcoffout_source_line                PARAMS ((unsigned int,
 205                                                          const char *));
 206 #endif /* BUFSIZ */
 207 #endif /* RTX_CODE */