gcc/xcoffout.h

   1 /* XCOFF definitions.  These are needed in dbxout.c, final.c,
   2    and xcoffout.h.
   3    Copyright (C) 1998, 2000, 2002, 2003, 2004, 2007
   4    Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22
  23 /* Tags and typedefs are C_DECL in XCOFF, not C_LSYM.  */
  24
  25 #define DBX_TYPE_DECL_STABS_CODE N_DECL
  26
  27 /* Use the XCOFF predefined type numbers.  */
  28
  29 #define DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER(TYPE) \
  30   xcoff_assign_fundamental_type_number (TYPE)
  31
  32 /* Any type with a negative type index has already been output.  */
  33
  34 #define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0)
  35
  36 /* Must use N_STSYM for static const variables (those in the text section)
  37    instead of N_FUN.  */
  38
  39 #define DBX_STATIC_CONST_VAR_CODE N_STSYM
  40
  41 /* For static variables, output code to define the start of a static block.  */
  42
  43 #define DBX_STATIC_BLOCK_START(ASMFILE,CODE)                            \
  44 {                                                                       \
  45   if ((CODE) == N_STSYM)                                                \
  46     fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\
  47   else if ((CODE) == N_LCSYM)                                           \
  48     fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \
  49 }
  50
  51 /* For static variables, output code to define the end of a static block.  */
  52
  53 #define DBX_STATIC_BLOCK_END(ASMFILE,CODE)                              \
  54 {                                                                       \
  55   if ((CODE) == N_STSYM || (CODE) == N_LCSYM)                           \
  56     fputs ("\t.es\n", (ASMFILE));                                       \
  57 }
  58
  59 /* We must use N_RPYSM instead of N_RSYM for register parameters.  */
  60
  61 #define DBX_REGPARM_STABS_CODE N_RPSYM
  62
  63 /* We must use 'R' instead of 'P' for register parameters.  */
  64
  65 #define DBX_REGPARM_STABS_LETTER 'R'
  66
  67 /* Define our own finish symbol function, since xcoff stabs have their
  68    own different format.  */
  69
  70 #define DBX_FINISH_STABS(SYM, CODE, LINE, ADDR, LABEL, NUMBER) do {     \
  71   if (ADDR)                                                             \
  72     {                                                                   \
  73       /* If we are writing a function name, we must emit a dot in       \
  74          order to refer to the function code, not its descriptor.  */   \
  75       if (CODE == N_FUN)                                                \
  76         putc ('.', asm_out_file);                                       \
  77                                                                         \
  78       /* If we are writing a function name, we must ensure that         \
  79          there is no storage-class suffix on the name.  */              \
  80       if (CODE == N_FUN && GET_CODE (ADDR) == SYMBOL_REF)               \
  81         {                                                               \
  82           const char *_p = XSTR (ADDR, 0);                              \
  83           if (*_p == '*')                                               \
  84             fputs (_p+1, asm_out_file);                                 \
  85           else                                                          \
  86             for (; *_p != '[' && *_p; _p++)                             \
  87               putc (*_p, asm_out_file);                                 \
  88         }                                                               \
  89       else                                                              \
  90         output_addr_const (asm_out_file, ADDR);                         \
  91     }                                                                   \
  92   /* Another special case: N_GSYM always gets the symbol name,          \
  93      whether or not LABEL or NUMBER are set.  */                        \
  94   else if (CODE == N_GSYM)                                              \
  95     assemble_name (asm_out_file, XSTR (XEXP (DECL_RTL (SYM), 0), 0));   \
  96   else if (LABEL)                                                       \
  97     assemble_name (asm_out_file, LABEL);                                \
  98   else                                                                  \
  99     dbxout_int (NUMBER);                                                \
 100   putc (',', asm_out_file);                                             \
 101   dbxout_int (stab_to_sclass (CODE));                                   \
 102   fputs (",0\n", asm_out_file);                                         \
 103 } while (0)
 104
 105 /* These are IBM XCOFF extensions we need to reference in dbxout.c
 106    and xcoffout.c.  */
 107
 108 /* AIX XCOFF uses this for typedefs.  This can have any value, since it is
 109    only used for translation into a C_DECL storage class.  */
 110 #ifndef N_DECL
 111 #define N_DECL 0x8c
 112 #endif
 113 /* AIX XCOFF uses this for parameters passed in registers.  This can have
 114    any value, since it is only used for translation into a C_RPSYM storage
 115    class.  */
 116 #ifndef N_RPSYM
 117 #define N_RPSYM 0x8e
 118 #endif
 119
 120 /* Name of the current include file.  */
 121
 122 extern const char *xcoff_current_include_file;
 123
 124 /* Names of bss and data sections.  These should be unique names for each
 125    compilation unit.  */
 126
 127 extern char *xcoff_bss_section_name;
 128 extern char *xcoff_private_data_section_name;
 129 extern char *xcoff_read_only_section_name;
 130
 131 /* Last source file name mentioned in a NOTE insn.  */
 132
 133 extern const char *xcoff_lastfile;
 134
 135 /* Don't write out path name for main source file.  */
 136 #define NO_DBX_MAIN_SOURCE_DIRECTORY 1
 137
 138 /* Write out main source file name using ".file" rather than ".stabs".
 139    We don't actually do this here, because the assembler gets confused if there
 140    is more than one .file directive.  rs6000_xcoff_file_start is already
 141    emitting a .file directory, so we don't output one here also.
 142    Initialize xcoff_lastfile.  */
 143 #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(FILE,FILENAME) \
 144   xcoff_lastfile = (FILENAME)
 145
 146 /* If we are still in an include file, its end must be marked.  */
 147 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
 148 do {                                                    \
 149   if (xcoff_current_include_file)                       \
 150     {                                                   \
 151       fputs ("\t.ei\t", (FILE));                        \
 152       output_quoted_string ((FILE), xcoff_current_include_file);        \
 153       putc ('\n', (FILE));                              \
 154       xcoff_current_include_file = NULL;                \
 155     }                                                   \
 156 } while (0)
 157
 158 /* Do not emit any marker for XCOFF until assembler allows XFT_CV.  */
 159 #define NO_DBX_GCC_MARKER
 160
 161 /* Do not break .stabs pseudos into continuations.  */
 162 #define DBX_CONTIN_LENGTH 0
 163
 164 /* Don't try to use the `x' type-cross-reference character in DBX data.
 165    Also has the consequence of putting each struct, union or enum
 166    into a separate .stabs, containing only cross-refs to the others.  */
 167 #define DBX_NO_XREFS
 168
 169 /* We must put stabs in the text section.  If we don't the assembler
 170    won't handle them correctly; it will sometimes put stabs where gdb
 171    can't find them.  */
 172
 173 #define DEBUG_SYMS_TEXT
 174
 175 /* Prototype functions in xcoffout.c.  */
 176
 177 extern int stab_to_sclass (int);
 178 extern void xcoffout_begin_prologue (unsigned int, const char *);
 179 extern void xcoffout_begin_block (unsigned, unsigned);
 180 extern void xcoffout_end_epilogue (unsigned int, const char *);
 181 extern void xcoffout_end_function (unsigned int);
 182 extern void xcoffout_end_block (unsigned, unsigned);
 183 extern int xcoff_assign_fundamental_type_number (tree);
 184 extern void xcoffout_declare_function (FILE *, tree, const char *);
 185 extern void xcoffout_source_line (unsigned int, const char *);