1 /* XCOFF definitions. These are needed in dbxout.c, final.c, 2 and xcoffout.h. 3 Copyright (C) 1998-2019 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 3, 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 COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #ifndef GCC_XCOFFOUT_H 22 #define GCC_XCOFFOUT_H 23 24 /* Tags and typedefs are C_DECL in XCOFF, not C_LSYM. */ 25 26 #define DBX_TYPE_DECL_STABS_CODE N_DECL 27 28 /* Use the XCOFF predefined type numbers. */ 29 30 #define DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER(TYPE) \ 31 xcoff_assign_fundamental_type_number (TYPE) 32 33 /* Any type with a negative type index has already been output. */ 34 35 #define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0) 36 37 /* Must use N_STSYM for static const variables (those in the text section) 38 instead of N_FUN. */ 39 40 #define DBX_STATIC_CONST_VAR_CODE N_STSYM 41 42 /* For static variables, output code to define the start of a static block. */ 43 44 #define DBX_STATIC_BLOCK_START(ASMFILE,CODE) \ 45 { \ 46 if ((CODE) == N_STSYM) \ 47 fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\ 48 else if ((CODE) == N_LCSYM) \ 49 fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \ 50 } 51 52 /* For static variables, output code to define the end of a static block. */ 53 54 #define DBX_STATIC_BLOCK_END(ASMFILE,CODE) \ 55 { \ 56 if ((CODE) == N_STSYM || (CODE) == N_LCSYM) \ 57 fputs ("\t.es\n", (ASMFILE)); \ 58 } 59 60 /* We must use N_RPYSM instead of N_RSYM for register parameters. */ 61 62 #define DBX_REGPARM_STABS_CODE N_RPSYM 63 64 /* We must use 'R' instead of 'P' for register parameters. */ 65 66 #define DBX_REGPARM_STABS_LETTER 'R' 67 68 /* Define our own finish symbol function, since xcoff stabs have their 69 own different format. */ 70 71 #define DBX_FINISH_STABS(SYM, CODE, LINE, ADDR, LABEL, NUMBER) do { \ 72 if (ADDR) \ 73 { \ 74 /* If we are writing a function name, we must emit a dot in \ 75 order to refer to the function code, not its descriptor. */ \ 76 if (CODE == N_FUN) \ 77 putc ('.', asm_out_file); \ 78 \ 79 /* If we are writing a function name, we must ensure that \ 80 there is no storage-class suffix on the name. */ \ 81 if (CODE == N_FUN && GET_CODE (ADDR) == SYMBOL_REF) \ 82 { \ 83 const char *_p = XSTR (ADDR, 0); \ 84 if (*_p == '*') \ 85 fputs (_p+1, asm_out_file); \ 86 else \ 87 for (; *_p != '[' && *_p; _p++) \ 88 putc (*_p != '$' ? *_p : '_', asm_out_file); \ 89 } \ 90 else \ 91 output_addr_const (asm_out_file, ADDR); \ 92 } \ 93 /* Another special case: N_GSYM always gets the symbol name, \ 94 whether or not LABEL or NUMBER are set. */ \ 95 else if (CODE == N_GSYM) \ 96 assemble_name (asm_out_file, XSTR (XEXP (DECL_RTL (SYM), 0), 0)); \ 97 else if (LABEL) \ 98 assemble_name (asm_out_file, LABEL); \ 99 else \ 100 dbxout_int (NUMBER); \ 101 putc (',', asm_out_file); \ 102 dbxout_int (stab_to_sclass (CODE)); \ 103 fputs (",0\n", asm_out_file); \ 104 } while (0) 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_private_rodata_section_name; 131 extern char *xcoff_tls_data_section_name; 132 extern char *xcoff_tbss_section_name; 133 extern char *xcoff_read_only_section_name; 134 135 /* Last source file name mentioned in a NOTE insn. */ 136 137 extern const char *xcoff_lastfile; 138 139 /* Don't write out path name for main source file. */ 140 #define NO_DBX_MAIN_SOURCE_DIRECTORY 1 141 142 /* Write out main source file name using ".file" rather than ".stabs". 143 We don't actually do this here, because the assembler gets confused if there 144 is more than one .file directive. rs6000_xcoff_file_start is already 145 emitting a .file directory, so we don't output one here also. 146 Initialize xcoff_lastfile. */ 147 #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(FILE,FILENAME) \ 148 xcoff_lastfile = (FILENAME) 149 150 /* If we are still in an include file, its end must be marked. */ 151 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \ 152 do { \ 153 if (xcoff_current_include_file) \ 154 { \ 155 fputs ("\t.ei\t", (FILE)); \ 156 output_quoted_string ((FILE), xcoff_current_include_file); \ 157 putc ('\n', (FILE)); \ 158 xcoff_current_include_file = NULL; \ 159 } \ 160 } while (0) 161 162 /* Do not emit any marker for XCOFF until assembler allows XFT_CV. */ 163 #define NO_DBX_GCC_MARKER 164 165 /* XCOFF32 maximum length is 64K; XLC limits to 16K. */ 166 #define DBX_CONTIN_LENGTH 16384 167 168 /* XLC uses '?' as continuation character. */ 169 #define DBX_CONTIN_CHAR '?' 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 (int); 185 extern void xcoffout_begin_prologue (unsigned int, unsigned int, const char *); 186 extern void xcoffout_begin_block (unsigned, unsigned); 187 extern void xcoffout_end_epilogue (unsigned int, const char *); 188 extern void xcoffout_end_function (unsigned int); 189 extern void xcoffout_end_block (unsigned, unsigned); 190 extern int xcoff_assign_fundamental_type_number (tree); 191 extern void xcoffout_declare_function (FILE *, tree, const char *); 192 extern void xcoffout_source_line (unsigned int, unsigned int, const char *, 193 int, bool); 194 195 #endif /* GCC_XCOFFOUT_H */ 196