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223 lines
7.6 KiB
C
223 lines
7.6 KiB
C
/* XCOFF definitions. These are needed in dbxout.c, final.c,
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and xcoffout.h.
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Copyright (C) 1998, 2000 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#define ASM_STABS_OP "\t.stabx\t"
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/* Tags and typedefs are C_DECL in XCOFF, not C_LSYM. */
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#define DBX_TYPE_DECL_STABS_CODE N_DECL
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/* Use the XCOFF predefined type numbers. */
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/* ??? According to metin, typedef stabx must go in text control section,
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but he did not make this changes everywhere where such typedef stabx
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can be emitted, so it is really needed or not? */
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#define DBX_OUTPUT_STANDARD_TYPES(SYMS) \
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{ \
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text_section (); \
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xcoff_output_standard_types (SYMS); \
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}
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/* Any type with a negative type index has already been output. */
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#define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0)
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/* Must use N_STSYM for static const variables (those in the text section)
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instead of N_FUN. */
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#define DBX_STATIC_CONST_VAR_CODE N_STSYM
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/* For static variables, output code to define the start of a static block.
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??? The IBM rs6000/AIX assembler has a bug that causes bss block debug
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info to be occasionally lost. A simple example is this:
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int a; static int b;
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The commands `gcc -g -c tmp.c; dump -t tmp.o' gives
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[10] m 0x00000016 1 0 0x8f 0x0000 .bs
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[11] m 0x00000000 1 0 0x90 0x0000 .es
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...
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[21] m 0x00000000 -2 0 0x85 0x0000 b:S-1
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which is wrong. The `b:S-1' must be between the `.bs' and `.es'.
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We can apparently work around the problem by forcing the text section
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(even if we are already in the text section) immediately before outputting
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the `.bs'. This should be fixed in the next major AIX release (3.3?). */
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#define DBX_STATIC_BLOCK_START(ASMFILE,CODE) \
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{ \
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if ((CODE) == N_STSYM) \
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fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\
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else if ((CODE) == N_LCSYM) \
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{ \
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fprintf ((ASMFILE), "%s\n", TEXT_SECTION_ASM_OP); \
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fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \
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} \
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}
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/* For static variables, output code to define the end of a static block. */
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#define DBX_STATIC_BLOCK_END(ASMFILE,CODE) \
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{ \
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if ((CODE) == N_STSYM || (CODE) == N_LCSYM) \
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fputs ("\t.es\n", (ASMFILE)); \
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}
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/* We must use N_RPYSM instead of N_RSYM for register parameters. */
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#define DBX_REGPARM_STABS_CODE N_RPSYM
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/* We must use 'R' instead of 'P' for register parameters. */
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#define DBX_REGPARM_STABS_LETTER 'R'
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/* Define our own finish symbol function, since xcoff stabs have their
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own different format. */
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#define DBX_FINISH_SYMBOL(SYM) \
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{ \
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if (current_sym_addr && current_sym_code == N_FUN) \
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fprintf (asmfile, "\",."); \
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else \
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fprintf (asmfile, "\","); \
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/* If we are writing a function name, we must ensure that \
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there is no storage-class suffix on the name. */ \
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if (current_sym_addr && current_sym_code == N_FUN \
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&& GET_CODE (current_sym_addr) == SYMBOL_REF) \
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{ \
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const char *_p = XSTR (current_sym_addr, 0); \
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if (*_p == '*') \
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fprintf (asmfile, "%s", _p+1); \
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else \
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for (; *_p != '[' && *_p; _p++) \
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fprintf (asmfile, "%c", *_p); \
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} \
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else if (current_sym_addr) \
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output_addr_const (asmfile, current_sym_addr); \
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else if (current_sym_code == N_GSYM) \
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assemble_name (asmfile, XSTR (XEXP (DECL_RTL (sym), 0), 0)); \
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else \
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fprintf (asmfile, "%d", current_sym_value); \
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fprintf (asmfile, ",%d,0\n", stab_to_sclass (current_sym_code)); \
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}
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/* These are IBM XCOFF extensions we need to reference in dbxout.c
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and xcoffout.c. */
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/* AIX XCOFF uses this for typedefs. This can have any value, since it is
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only used for translation into a C_DECL storage class. */
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#ifndef N_DECL
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#define N_DECL 0x8c
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#endif
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/* AIX XCOFF uses this for parameters passed in registers. This can have
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any value, since it is only used for translation into a C_RPSYM storage
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class. */
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#ifndef N_RPSYM
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#define N_RPSYM 0x8e
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#endif
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/* Name of the current include file. */
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extern const char *xcoff_current_include_file;
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/* Names of bss and data sections. These should be unique names for each
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compilation unit. */
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extern char *xcoff_bss_section_name;
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extern char *xcoff_private_data_section_name;
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extern char *xcoff_read_only_section_name;
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/* Last source file name mentioned in a NOTE insn. */
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extern const char *xcoff_lastfile;
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/* Don't write out path name for main source file. */
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#define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(FILE,FILENAME)
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/* Write out main source file name using ".file" rather than ".stabs".
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We don't actually do this here, because the assembler gets confused if there
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is more than one .file directive. ASM_FILE_START in config/rs6000/rs6000.h
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is already emitting a .file directory, so we don't output one here also.
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Initialize xcoff_lastfile. */
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#define DBX_OUTPUT_MAIN_SOURCE_FILENAME(FILE,FILENAME) \
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xcoff_lastfile = (FILENAME)
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/* If we are still in an include file, its end must be marked. */
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#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
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{ \
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if (xcoff_current_include_file) \
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{ \
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fputs ("\t.ei\t", (FILE)); \
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output_quoted_string ((FILE), xcoff_current_include_file); \
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putc ('\n', (FILE)); \
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xcoff_current_include_file = NULL; \
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} \
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}
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/* .stabx has the type in a different place. */
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#if 0 /* Do not emit any marker for XCOFF until assembler allows XFT_CV. */
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#define DBX_OUTPUT_GCC_MARKER(FILE) \
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fprintf ((FILE), "%s\"%s\",0,%d,0\n", ASM_STABS_OP, STABS_GCC_MARKER, \
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stab_to_sclass (N_GSYM))
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#else
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#define DBX_OUTPUT_GCC_MARKER(FILE)
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#endif
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/* Do not break .stabs pseudos into continuations. */
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#define DBX_CONTIN_LENGTH 0
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/* Don't try to use the `x' type-cross-reference character in DBX data.
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Also has the consequence of putting each struct, union or enum
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into a separate .stabs, containing only cross-refs to the others. */
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#define DBX_NO_XREFS
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/* We must put stabs in the text section. If we don't the assembler
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won't handle them correctly; it will sometimes put stabs where gdb
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can't find them. */
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#define DEBUG_SYMS_TEXT
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/* Prototype functions in xcoffout.c. */
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extern int stab_to_sclass PARAMS ((int));
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#ifdef BUFSIZ
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extern void xcoffout_begin_prologue PARAMS ((unsigned int,
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const char *));
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extern void xcoffout_begin_block PARAMS ((unsigned, unsigned));
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extern void xcoffout_end_epilogue PARAMS ((void));
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extern void xcoffout_end_function PARAMS ((unsigned int));
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extern void xcoffout_end_block PARAMS ((unsigned, unsigned));
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#endif /* BUFSIZ */
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#ifdef TREE_CODE
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extern void xcoff_output_standard_types PARAMS ((tree));
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#ifdef BUFSIZ
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extern void xcoffout_declare_function PARAMS ((FILE *, tree, const char *));
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#endif /* BUFSIZ */
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#endif /* TREE_CODE */
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#ifdef RTX_CODE
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#ifdef BUFSIZ
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extern void xcoffout_source_line PARAMS ((unsigned int,
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const char *));
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#endif /* BUFSIZ */
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#endif /* RTX_CODE */
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