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Annotation of gcc/config/i386/aix386ng.h, revision 1.1

1.1     ! root        1: /* Definitions for IBM PS2 running AIX/386.
        !             2:    From: Minh Tran-Le <[email protected]>
        !             3:    Copyright (C) 1988 Free Software Foundation, Inc.
        !             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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            20: 
        !            21: 
        !            22: #include "i386/i386.h"
        !            23: 
        !            24: /* Get the generic definitions for system V.3.  */
        !            25: 
        !            26: #include "svr3.h"
        !            27: 
        !            28: /* Use the ATT assembler syntax.
        !            29:    This overrides at least one macro (ASM_OUTPUT_LABELREF) from svr3.h.  */
        !            30: 
        !            31: #include "i386/att.h"
        !            32: 
        !            33: /* Use crt1.o as a startup file and crtn.o as a closing file.  */
        !            34: 
        !            35: #define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}"
        !            36: #define ENDFILE_SPEC   "crtn.o%s"
        !            37: 
        !            38: #define LIB_SPEC "%{shlib:-lc_s} -lc"
        !            39: 
        !            40: /* Special flags for the linker.  I don't know what they do.  */
        !            41: 
        !            42: #define LINK_SPEC "%{K} %{!K:-K} %{T*} %{z:-lm}"
        !            43: 
        !            44: /* Specify predefined symbols in preprocessor.  */
        !            45: 
        !            46: #define CPP_PREDEFINES "-Dps2 -Dunix -Di386"
        !            47: 
        !            48: #define CPP_SPEC \
        !            49:   "%{posix:-D_POSIX_SOURCE}%{!posix:-DAIX} -D_I386 -D_AIX -D_MBCS"
        !            50: 
        !            51: /* special flags for the aix assembler to generate the short form for all
        !            52:    qualifying forward reference */
        !            53: /* The buggy /bin/as of aix ps/2 1.2.x cannot always handle it.        */
        !            54: #if 0
        !            55: #define ASM_SPEC "-s2"
        !            56: #endif /* 0 */
        !            57: 
        !            58: #undef ASM_FILE_START
        !            59: #define ASM_FILE_START(FILE)                                   \
        !            60:   do { fprintf (FILE, "\t.file\t\"%s\"\n", dump_base_name);    \
        !            61:        if (optimize)                                           \
        !            62:           ASM_FILE_START_1 (FILE);                             \
        !            63:        else                                                    \
        !            64:           fprintf (FILE, "\t.noopt\n");                                \
        !            65:      } while (0)
        !            66: 
        !            67: /* This was suggested, but it shouldn't be right for DBX output. -- RMS
        !            68:    #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) */
        !            69: 
        !            70: /* Writing `int' for a bitfield forces int alignment for the structure.  */
        !            71: 
        !            72: #define PCC_BITFIELD_TYPE_MATTERS 1
        !            73: 
        !            74: #ifndef USE_GAS
        !            75: /* Don't write a `.optim' pseudo; this assembler
        !            76:    is said to have a bug when .optim is used.  */
        !            77: 
        !            78: #undef ASM_FILE_START_1
        !            79: #define ASM_FILE_START_1(FILE) fprintf (FILE, "\t.noopt\n")
        !            80: #endif
        !            81: 
        !            82: /* Output assembler code to FILE to increment profiler label # LABELNO
        !            83:    for profiling a function entry.  */
        !            84: 
        !            85: #undef FUNCTION_PROFILER
        !            86: #define FUNCTION_PROFILER(FILE, LABELNO)  \
        !            87:    fprintf (FILE, "\tleal %sP%d,%%eax\n\tcall mcount\n", LPREFIX, (LABELNO));
        !            88: 
        !            89: /* Note that using bss_section here caused errors
        !            90:    in building shared libraries on system V.3.
        !            91:    but AIX 1.2 does not have yet shareable libraries on PS2 */
        !            92: #undef ASM_OUTPUT_LOCAL
        !            93: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
        !            94:   (bss_section (),                                     \
        !            95:    ASM_OUTPUT_LABEL ((FILE), (NAME)),                  \
        !            96:    fprintf ((FILE), "\t.set .,.+%u\n", (ROUNDED)))
        !            97: 
        !            98: 
        !            99: /* Undef all the .init and .fini section stuff if we are not using gas and
        !           100:  * gnu ld so that we can use collect because the standard /bin/as and /bin/ld
        !           101:  * cannot handle those.
        !           102:  */
        !           103: #ifndef USE_GAS
        !           104: # undef INIT_SECTION_ASM_OP
        !           105: # undef FINI_SECTION_ASM_OP
        !           106: # undef CTORS_SECTION_ASM_OP
        !           107: # undef DTORS_SECTION_ASM_OP
        !           108: # undef ASM_OUTPUT_CONSTRUCTOR
        !           109: # undef ASM_OUTPUT_DESTRUCTOR
        !           110: # undef DO_GLOBAL_CTORS_BODY
        !           111: 
        !           112: # undef CTOR_LIST_BEGIN
        !           113: # define CTOR_LIST_BEGIN
        !           114: # undef CTOR_LIST_END
        !           115: # define CTOR_LIST_END
        !           116: # undef DTOR_LIST_BEGIN
        !           117: # define DTOR_LIST_BEGIN
        !           118: # undef DTOR_LIST_END
        !           119: # define DTOR_LIST_END
        !           120: 
        !           121: # undef CONST_SECTION_FUNCTION
        !           122: # define CONST_SECTION_FUNCTION                                                \
        !           123: void                                                                   \
        !           124: const_section ()                                                       \
        !           125: {                                                                      \
        !           126:   extern void text_section();                                          \
        !           127:   text_section();                                                      \
        !           128: }
        !           129: 
        !           130: # undef EXTRA_SECTION_FUNCTIONS
        !           131: # define EXTRA_SECTION_FUNCTIONS                               \
        !           132:   CONST_SECTION_FUNCTION                                       \
        !           133:   BSS_SECTION_FUNCTION
        !           134: 
        !           135: /* for collect2 */
        !           136: # define OBJECT_FORMAT_COFF
        !           137: # define MY_ISCOFF(magic) \
        !           138:   ((magic) == I386MAGIC || (magic) == I386SVMAGIC)
        !           139: 
        !           140: #endif /* !USE_GAS */

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