xcoffout.h revision 90075
1187063Srwatson/* XCOFF definitions. These are needed in dbxout.c, final.c, 2187063Srwatson and xcoffout.h. 3187063Srwatson Copyright (C) 1998, 2000 Free Software Foundation, Inc. 4187063Srwatson 5187063SrwatsonThis file is part of GCC. 6187063Srwatson 7187063SrwatsonGCC is free software; you can redistribute it and/or modify it under 8187063Srwatsonthe terms of the GNU General Public License as published by the Free 9187063SrwatsonSoftware Foundation; either version 2, or (at your option) any later 10187063Srwatsonversion. 11187063Srwatson 12187063SrwatsonGCC is distributed in the hope that it will be useful, but WITHOUT ANY 13187063SrwatsonWARRANTY; without even the implied warranty of MERCHANTABILITY or 14187063SrwatsonFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15187063Srwatsonfor more details. 16187063Srwatson 17187063SrwatsonYou should have received a copy of the GNU General Public License 18187063Srwatsonalong with GCC; see the file COPYING. If not, write to the Free 19187063SrwatsonSoftware Foundation, 59 Temple Place - Suite 330, Boston, MA 20187063Srwatson02111-1307, USA. */ 21187063Srwatson 22187063Srwatson 23187063Srwatson#define ASM_STABS_OP "\t.stabx\t" 24187063Srwatson 25187063Srwatson/* Tags and typedefs are C_DECL in XCOFF, not C_LSYM. */ 26187063Srwatson 27187063Srwatson#define DBX_TYPE_DECL_STABS_CODE N_DECL 28187063Srwatson 29187063Srwatson/* Use the XCOFF predefined type numbers. */ 30187063Srwatson 31187063Srwatson/* ??? According to metin, typedef stabx must go in text control section, 32187063Srwatson but he did not make this changes everywhere where such typedef stabx 33187063Srwatson can be emitted, so it is really needed or not? */ 34187063Srwatson 35187063Srwatson#define DBX_OUTPUT_STANDARD_TYPES(SYMS) \ 36187063Srwatson{ \ 37187063Srwatson text_section (); \ 38187063Srwatson xcoff_output_standard_types (SYMS); \ 39187063Srwatson} 40187063Srwatson 41187063Srwatson/* Any type with a negative type index has already been output. */ 42187063Srwatson 43187063Srwatson#define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0) 44187063Srwatson 45187063Srwatson/* Must use N_STSYM for static const variables (those in the text section) 46187063Srwatson 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 ??? 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?). */ 64 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 } \ 74} 75 76/* For static variables, output code to define the end of a static block. */ 77 78#define DBX_STATIC_BLOCK_END(ASMFILE,CODE) \ 79{ \ 80 if ((CODE) == N_STSYM || (CODE) == N_LCSYM) \ 81 fputs ("\t.es\n", (ASMFILE)); \ 82} 83 84/* We must use N_RPYSM instead of N_RSYM for register parameters. */ 85 86#define DBX_REGPARM_STABS_CODE N_RPSYM 87 88/* We must use 'R' instead of 'P' for register parameters. */ 89 90#define DBX_REGPARM_STABS_LETTER 'R' 91 92/* Define our own finish symbol function, since xcoff stabs have their 93 own different format. */ 94 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) \ 105 { \ 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); \ 112 } \ 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)); \ 120} 121 122/* These are IBM XCOFF extensions we need to reference in dbxout.c 123 and xcoffout.c. */ 124 125/* 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 136 137/* Name of the current include file. */ 138 139extern const char *xcoff_current_include_file; 140 141/* Names of bss and data sections. These should be unique names for each 142 compilation unit. */ 143 144extern char *xcoff_bss_section_name; 145extern char *xcoff_private_data_section_name; 146extern char *xcoff_read_only_section_name; 147 148/* Last source file name mentioned in a NOTE insn. */ 149 150extern const char *xcoff_lastfile; 151 152/* Don't write out path name for main source file. */ 153#define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(FILE,FILENAME) 154 155/* 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) 162 163/* If we are still in an include file, its end must be marked. */ 164#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \ 165{ \ 166 if (xcoff_current_include_file) \ 167 { \ 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; \ 172 } \ 173} 174 175/* .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 183 184/* Do not break .stabs pseudos into continuations. */ 185#define DBX_CONTIN_LENGTH 0 186 187/* 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 191 192/* 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. */ 195 196#define DEBUG_SYMS_TEXT 197 198/* Prototype functions in xcoffout.c. */ 199 200extern int stab_to_sclass PARAMS ((int)); 201#ifdef BUFSIZ 202extern void xcoffout_begin_prologue PARAMS ((unsigned int, 203 const char *)); 204extern void xcoffout_begin_block PARAMS ((unsigned, unsigned)); 205extern void xcoffout_end_epilogue PARAMS ((void)); 206extern void xcoffout_end_function PARAMS ((unsigned int)); 207extern void xcoffout_end_block PARAMS ((unsigned, unsigned)); 208#endif /* BUFSIZ */ 209 210#ifdef TREE_CODE 211extern void xcoff_output_standard_types PARAMS ((tree)); 212#ifdef BUFSIZ 213extern void xcoffout_declare_function PARAMS ((FILE *, tree, const char *)); 214#endif /* BUFSIZ */ 215#endif /* TREE_CODE */ 216 217#ifdef RTX_CODE 218#ifdef BUFSIZ 219extern void xcoffout_source_line PARAMS ((unsigned int, 220 const char *)); 221#endif /* BUFSIZ */ 222#endif /* RTX_CODE */ 223