xcoffout.h revision 18334
1/* XCOFF definitions. These are needed in dbxout.c, final.c, 2 and xcoffout.h. */ 3 4#define ASM_STABS_OP ".stabx" 5 6/* Tags and typedefs are C_DECL in XCOFF, not C_LSYM. */ 7 8#define DBX_TYPE_DECL_STABS_CODE N_DECL 9 10/* Use the XCOFF predefined type numbers. */ 11 12/* ??? According to metin, typedef stabx must go in text control section, 13 but he did not make this changes everywhere where such typedef stabx 14 can be emitted, so it is really needed or not? */ 15 16#define DBX_OUTPUT_STANDARD_TYPES(SYMS) \ 17{ \ 18 text_section (); \ 19 xcoff_output_standard_types (SYMS); \ 20} 21 22/* Any type with a negative type index has already been output. */ 23 24#define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0) 25 26/* Must use N_STSYM for static const variables (those in the text section) 27 instead of N_FUN. */ 28 29#define DBX_STATIC_CONST_VAR_CODE N_STSYM 30 31/* For static variables, output code to define the start of a static block. 32 33 ??? The IBM rs6000/AIX assembler has a bug that causes bss block debug 34 info to be occasionally lost. A simple example is this: 35 int a; static int b; 36 The commands `gcc -g -c tmp.c; dump -t tmp.o' gives 37[10] m 0x00000016 1 0 0x8f 0x0000 .bs 38[11] m 0x00000000 1 0 0x90 0x0000 .es 39... 40[21] m 0x00000000 -2 0 0x85 0x0000 b:S-1 41 which is wrong. The `b:S-1' must be between the `.bs' and `.es'. 42 We can apparently work around the problem by forcing the text section 43 (even if we are already in the text section) immediately before outputting 44 the `.bs'. This should be fixed in the next major AIX release (3.3?). */ 45 46#define DBX_STATIC_BLOCK_START(ASMFILE,CODE) \ 47{ \ 48 if ((CODE) == N_STSYM) \ 49 fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\ 50 else if ((CODE) == N_LCSYM) \ 51 { \ 52 fprintf ((ASMFILE), "%s\n", TEXT_SECTION_ASM_OP); \ 53 fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \ 54 } \ 55} 56 57/* For static variables, output code to define the end of a static block. */ 58 59#define DBX_STATIC_BLOCK_END(ASMFILE,CODE) \ 60{ \ 61 if (current_sym_code == N_STSYM || current_sym_code == N_LCSYM) \ 62 fprintf (asmfile, "\t.es\n"); \ 63} 64 65/* We must use N_RPYSM instead of N_RSYM for register parameters. */ 66 67#define DBX_REGPARM_STABS_CODE N_RPSYM 68 69/* We must use 'R' instead of 'P' for register parameters. */ 70 71#define DBX_REGPARM_STABS_LETTER 'R' 72 73/* Define our own finish symbol function, since xcoff stabs have their 74 own different format. */ 75 76#define DBX_FINISH_SYMBOL(SYM) \ 77{ \ 78 if (current_sym_addr && current_sym_code == N_FUN) \ 79 fprintf (asmfile, "\",."); \ 80 else \ 81 fprintf (asmfile, "\","); \ 82 /* If we are writing a function name, we must ensure that \ 83 there is no storage-class suffix on the name. */ \ 84 if (current_sym_addr && current_sym_code == N_FUN \ 85 && GET_CODE (current_sym_addr) == SYMBOL_REF) \ 86 { \ 87 char *_p = XSTR (current_sym_addr, 0); \ 88 if (*_p == '*') \ 89 fprintf (asmfile, "%s", _p+1); \ 90 else \ 91 for (; *_p != '[' && *_p; _p++) \ 92 fprintf (asmfile, "%c", *_p); \ 93 } \ 94 else if (current_sym_addr) \ 95 output_addr_const (asmfile, current_sym_addr); \ 96 else if (current_sym_code == N_GSYM) \ 97 assemble_name (asmfile, XSTR (XEXP (DECL_RTL (sym), 0), 0)); \ 98 else \ 99 fprintf (asmfile, "%d", current_sym_value); \ 100 fprintf (asmfile, ",%d,0\n", stab_to_sclass (current_sym_code)); \ 101} 102 103/* These are IBM XCOFF extensions we need to reference in dbxout.c 104 and xcoffout.c. */ 105 106/* AIX XCOFF uses this for typedefs. This can have any value, since it is 107 only used for translation into a C_DECL storage class. */ 108#ifndef N_DECL 109#define N_DECL 0x8c 110#endif 111/* AIX XCOFF uses this for parameters passed in registers. This can have 112 any value, since it is only used for translation into a C_RPSYM storage 113 class. */ 114#ifndef N_RPSYM 115#define N_RPSYM 0x8e 116#endif 117 118/* The line number of the beginning of the current function. 119 xcoffout.c needs this so that it can output relative linenumbers. */ 120 121extern int xcoff_begin_function_line; 122 123/* Name of the current include file. */ 124 125extern char *xcoff_current_include_file; 126 127/* Name of the current function file. This is the file the `.bf' is 128 emitted from. In case a line is emitted from a different file, 129 (by including that file of course), then the line number will be 130 absolute. */ 131 132extern char *xcoff_current_function_file; 133 134/* Names of bss and data sections. These should be unique names for each 135 compilation unit. */ 136 137extern char *xcoff_bss_section_name; 138extern char *xcoff_private_data_section_name; 139extern char *xcoff_read_only_section_name; 140 141/* Last source file name mentioned in a NOTE insn. */ 142 143extern char *xcoff_lastfile; 144 145/* Don't write out path name for main source file. */ 146#define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(FILE,FILENAME) 147 148/* Write out main source file name using ".file" rather than ".stabs". 149 We don't actually do this here, because the assembler gets confused if there 150 is more than one .file directive. ASM_FILE_START in config/rs6000/rs6000.h 151 is already emitting a .file directory, so we don't output one here also. 152 Initialize xcoff_lastfile. */ 153#define DBX_OUTPUT_MAIN_SOURCE_FILENAME(FILE,FILENAME) \ 154 xcoff_lastfile = input_file_name 155 156/* If we are still in an include file, its end must be marked. */ 157#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \ 158{ \ 159 if (xcoff_current_include_file) \ 160 { \ 161 fprintf (FILE, "\t.ei\t"); \ 162 output_quoted_string (FILE, xcoff_current_include_file); \ 163 fprintf (FILE, "\n"); \ 164 xcoff_current_include_file = NULL; \ 165 } \ 166} 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