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Annotation of gcc/config/sparc/litecoff.h, revision 1.1

1.1     ! root        1: /* Definitions of target machine for GNU compiler, for SPARClite w/o FPU, COFF.
        !             2:    Copyright (C) 1994 Free Software Foundation, Inc.
        !             3:    Written by Ken Raeburn ([email protected]).
        !             4: 
        !             5: This file is part of GNU CC.
        !             6: 
        !             7: GNU CC is free software; you can redistribute it and/or modify
        !             8: it under the terms of the GNU General Public License as published by
        !             9: the Free Software Foundation; either version 2, or (at your option)
        !            10: any later version.
        !            11: 
        !            12: GNU CC is distributed in the hope that it will be useful,
        !            13: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            15: GNU General Public License for more details.
        !            16: 
        !            17: You should have received a copy of the GNU General Public License
        !            18: along with GNU CC; see the file COPYING.  If not, write to
        !            19: the Free Software Foundation, 59 Temple Place - Suite 330,
        !            20: Boston, MA 02111-1307, USA.  */
        !            21: 
        !            22: #include "sparc/lite.h"
        !            23: 
        !            24: #undef ASM_OUTPUT_IDENT
        !            25: 
        !            26: #undef SELECT_SECTION
        !            27: #undef SELECT_RTX_SECTION
        !            28: #define BSS_SECTION_ASM_OP     ".section\t\".bss\""
        !            29: 
        !            30: #include "svr3.h"
        !            31: 
        !            32: #undef CPP_PREDEFINES
        !            33: #define CPP_PREDEFINES "-Dsparc -Dsparclite -Acpu(sparc) -Amachine(sparc)"
        !            34: 
        !            35: /* just in case */
        !            36: #undef DBX_DEBUGGING_INFO
        !            37: #undef PREFERRED_DEBUGGING_TYPE
        !            38: #define DBX_DEBUGGING_INFO
        !            39: #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
        !            40: 
        !            41: /* These are all necessary because this is how gdb expects gcc to output
        !            42:    stabs in coff.  */
        !            43: 
        !            44: /* Be function-relative for block and source line stab directives.  */
        !            45: 
        !            46: #define DBX_BLOCKS_FUNCTION_RELATIVE 1
        !            47: 
        !            48: /* but, to make this work, functions must appear prior to line info.  */
        !            49: 
        !            50: #define DBX_FUNCTION_FIRST
        !            51: 
        !            52: /* Generate a blank trailing N_SO to mark the end of the .o file, since
        !            53:    we can't depend upon the linker to mark .o file boundaries with
        !            54:    embedded stabs.  */
        !            55: 
        !            56: #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                        \
        !            57:   fprintf (FILE,                                                       \
        !            58:           "\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO)
        !            59: 
        !            60: /* This is copied from final.c and sparc.h.  */
        !            61: #undef ASM_OUTPUT_SOURCE_LINE
        !            62: #define ASM_OUTPUT_SOURCE_LINE(FILE, LINE)                     \
        !            63: { if (write_symbols == SDB_DEBUG) {                            \
        !            64:     fprintf ((FILE), "\t.ln\t%d\n",                            \
        !            65:             ((sdb_begin_function_line > -1)                    \
        !            66:              ? (LINE) - sdb_begin_function_line : 1));         \
        !            67:   } else if (write_symbols == DBX_DEBUG) {                     \
        !            68:     static int sym_lineno = 1;                                 \
        !            69:     fprintf (FILE, ".stabn 68,0,%d,.LM%d-",                    \
        !            70:             LINE, sym_lineno);                                 \
        !            71:     assemble_name (FILE,                                       \
        !            72:                   XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
        !            73:     fprintf (FILE, "\n.LM%d:\n", sym_lineno);                  \
        !            74:     sym_lineno += 1;                                           \
        !            75:   } }
        !            76: 
        !            77: /* Support the ctors and dtors sections for g++.  */
        !            78: 
        !            79: #undef INIT_SECTION_ASM_OP
        !            80: 
        !            81: /* Support the ctors and dtors sections for g++.  */
        !            82: 
        !            83: #undef CTORS_SECTION_ASM_OP
        !            84: #define CTORS_SECTION_ASM_OP   ".section\t.ctors,\"x\""
        !            85: #undef DTORS_SECTION_ASM_OP
        !            86: #define DTORS_SECTION_ASM_OP   ".section\t.dtors,\"x\""
        !            87: 
        !            88: /* A list of other sections which the compiler might be "in" at any
        !            89:    given time.  */
        !            90: 
        !            91: #undef EXTRA_SECTIONS
        !            92: #define EXTRA_SECTIONS in_const, in_bss, in_ctors, in_dtors
        !            93: 
        !            94: /* A list of extra section function definitions.  */
        !            95: 
        !            96: #undef EXTRA_SECTION_FUNCTIONS
        !            97: #define EXTRA_SECTION_FUNCTIONS                                                \
        !            98:   CONST_SECTION_FUNCTION                                               \
        !            99:   CTORS_SECTION_FUNCTION                                               \
        !           100:   DTORS_SECTION_FUNCTION
        !           101: 
        !           102: #define CTORS_SECTION_FUNCTION                                         \
        !           103: void                                                                   \
        !           104: ctors_section ()                                                       \
        !           105: {                                                                      \
        !           106:   if (in_section != in_ctors)                                          \
        !           107:     {                                                                  \
        !           108:       fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP);            \
        !           109:       in_section = in_ctors;                                           \
        !           110:     }                                                                  \
        !           111: }
        !           112: 
        !           113: #define DTORS_SECTION_FUNCTION                                         \
        !           114: void                                                                   \
        !           115: dtors_section ()                                                       \
        !           116: {                                                                      \
        !           117:   if (in_section != in_dtors)                                          \
        !           118:     {                                                                  \
        !           119:       fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP);            \
        !           120:       in_section = in_dtors;                                           \
        !           121:     }                                                                  \
        !           122: }
        !           123: 
        !           124: #define INT_ASM_OP ".long"
        !           125: 
        !           126: /* A C statement (sans semicolon) to output an element in the table of
        !           127:    global constructors.  */
        !           128: #undef ASM_OUTPUT_CONSTRUCTOR
        !           129: #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)                              \
        !           130:   do {                                                                 \
        !           131:     ctors_section ();                                                  \
        !           132:     fprintf (FILE, "\t%s\t ", INT_ASM_OP);                             \
        !           133:     assemble_name (FILE, NAME);                                                \
        !           134:     fprintf (FILE, "\n");                                              \
        !           135:   } while (0)
        !           136: 
        !           137: /* A C statement (sans semicolon) to output an element in the table of
        !           138:    global destructors.  */
        !           139: #undef ASM_OUTPUT_DESTRUCTOR
        !           140: #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)                                       \
        !           141:   do {                                                                 \
        !           142:     dtors_section ();                                                  \
        !           143:     fprintf (FILE, "\t%s\t ", INT_ASM_OP);                             \
        !           144:     assemble_name (FILE, NAME);                                        \
        !           145:     fprintf (FILE, "\n");                                              \
        !           146:   } while (0)
        !           147: 
        !           148: #undef DO_GLOBAL_CTORS_BODY
        !           149: #undef DO_GLOBAL_DTORS_BODY

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