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Annotation of gcc/config/rs6000/aix3newas.h, revision 1.1

1.1     ! root        1: /* Definitions of target machine for GNU compiler,
        !             2:    for IBM RS/6000 POWER running AIX version 3.x with the fixed assembler.
        !             3:    Copyright (C) 1995 Free Software Foundation, Inc.
        !             4:    Contributed by Jason Merrill ([email protected]).
        !             5: 
        !             6: This file is part of GNU CC.
        !             7: 
        !             8: GNU CC is free software; you can redistribute it and/or modify
        !             9: it under the terms of the GNU General Public License as published by
        !            10: the Free Software Foundation; either version 2, or (at your option)
        !            11: any later version.
        !            12: 
        !            13: GNU CC is distributed in the hope that it will be useful,
        !            14: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            16: GNU General Public License for more details.
        !            17: 
        !            18: You should have received a copy of the GNU General Public License
        !            19: along with GNU CC; see the file COPYING.  If not, write to
        !            20: the Free Software Foundation, 59 Temple Place - Suite 330,
        !            21: Boston, MA 02111-1307, USA.  */
        !            22: 
        !            23: 
        !            24: #include "rs6000/rs6000.h"
        !            25: 
        !            26: /* Tell the assembler to assume that all undefined names are external.  */
        !            27: 
        !            28: #undef ASM_SPEC
        !            29: #define ASM_SPEC "-u \
        !            30: %{!mcpu*: \
        !            31:   %{mpower: %{!mpowerpc*: %{!mpower2: -mpwr}}} \
        !            32:   %{mpower2: -mpwrx} \
        !            33:   %{mno-power: %{mpowerpc*: -mppc}} \
        !            34:   %{mno-power: %{!mpowerpc*: -mcom}} \
        !            35:   %{!mno-power: %{mpowerpc*: -m601}} \
        !            36:   %{!mno-power: %{!mpowerpc*: %{!mpower2: -mpwr}}}} \
        !            37: %{mcpu=common: -mcom} \
        !            38: %{mcpu=power: -mpwr} \
        !            39: %{mcpu=powerpc: -mppc} \
        !            40: %{mcpu=rios: -mpwr} \
        !            41: %{mcpu=rios1: -mpwr} \
        !            42: %{mcpu=rios2: -mpwrx} \
        !            43: %{mcpu=rsc: -mpwr} \
        !            44: %{mcpu=rsc1: -mpwr} \
        !            45: %{mcpu=403: -mppc} \
        !            46: %{mcpu=601: -m601} \
        !            47: %{mcpu=603: -mppc} \
        !            48: %{mcpu=604: -mppc}"
        !            49: 
        !            50: /* Define the options for the binder: Start text at 512, align all segments
        !            51:    to 512 bytes, and warn if there is text relocation.
        !            52: 
        !            53:    The -bhalt:4 option supposedly changes the level at which ld will abort,
        !            54:    but it also suppresses warnings about multiply defined symbols and is
        !            55:    used by the AIX cc command.  So we use it here.
        !            56: 
        !            57:    -bnodelcsect undoes a poor choice of default relating to multiply-defined
        !            58:    csects.  See AIX documentation for more information about this.
        !            59: 
        !            60:    -bM:SRE tells the linker that the output file is Shared REusable.  Note
        !            61:    that to actually build a shared library you will also need to specify an
        !            62:    export list with the -Wl,-bE option.
        !            63: 
        !            64:    If -mcpu=common, export the architecture dependent multiply/divide routines
        !            65:    as per README.RS6000.  */
        !            66: 
        !            67: #undef LINK_SPEC
        !            68: #define LINK_SPEC "-T512 -H512 %{!r:-btextro} -bhalt:4 -bnodelcsect\
        !            69:    %{static:-bnso -bI:/lib/syscalls.exp} \
        !            70:    %{mcpu=common: milli.exp%s} \
        !            71:    %{!shared:%{g*:-bexport:/usr/lib/libg.exp}} %{shared:-bM:SRE}"
        !            72: 
        !            73: /* These are not necessary when we pass -u to the assembler, and undefining
        !            74:    them saves a great deal of space in object files.  */
        !            75: 
        !            76: #undef ASM_OUTPUT_EXTERNAL
        !            77: #undef ASM_OUTPUT_EXTERNAL_LIBCALL
        !            78: #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)  \
        !            79: { rtx _symref = XEXP (DECL_RTL (DECL), 0);     \
        !            80:   if ((TREE_CODE (DECL) == VAR_DECL            \
        !            81:        || TREE_CODE (DECL) == FUNCTION_DECL)   \
        !            82:       && (NAME)[0] != '*'                      \
        !            83:       && (NAME)[strlen (NAME) - 1] != ']')     \
        !            84:     {                                          \
        !            85:       char *_name = (char *) permalloc (strlen (XSTR (_symref, 0)) + 5); \
        !            86:       strcpy (_name, XSTR (_symref, 0));       \
        !            87:       strcat (_name, TREE_CODE (DECL) == FUNCTION_DECL ? "[DS]" : "[RW]"); \
        !            88:       XSTR (_symref, 0) = _name;               \
        !            89:     }                                          \
        !            90: }

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