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Annotation of gcc/config/arm/riscix.h, revision 1.1.1.2

1.1       root        1: /* Definitions of target machine for GNU compiler.  ARM RISCiX version.
1.1.1.2 ! root        2:    Copyright (C) 1993, 1994 Free Software Foundation, Inc.
1.1       root        3:    Contributed by Richard Earnshaw ([email protected]), based on original
                      4:              work by Pieter `Tiggr' Schoenmakers ([email protected])
                      5:              and Martin Simmons (@harleqn.co.uk).
                      6: 
                      7: This file is part of GNU CC.
                      8: 
                      9: GNU CC is free software; you can redistribute it and/or modify
                     10: it under the terms of the GNU General Public License as published by
                     11: the Free Software Foundation; either version 2, or (at your option)
                     12: any later version.
                     13: 
                     14: GNU CC is distributed in the hope that it will be useful,
                     15: but WITHOUT ANY WARRANTY; without even the implied warranty of
                     16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     17: GNU General Public License for more details.
                     18: 
                     19: You should have received a copy of the GNU General Public License
                     20: along with GNU CC; see the file COPYING.  If not, write to
                     21: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
                     22: 
1.1.1.2 ! root       23: /* Translation to find startup files.  On RISC iX boxes,
        !            24:    crt0, mcrt0 and gcrt0.o are in /usr/lib.  */
        !            25: #define STARTFILE_SPEC  "\
        !            26:   %{pg:/usr/lib/gcrt0.o%s}\
        !            27:   %{!pg:%{p:/usr/lib/mcrt0.o%s}\
        !            28:         %{!p:/usr/lib/crt0.o%s}}"
        !            29: 
        !            30: /* RISC iX has no concept of -lg */
        !            31: /* If -static is specified then link with -lc_n */
        !            32: 
        !            33: #ifndef LIB_SPEC
        !            34: #define LIB_SPEC "\
        !            35:   %{g*:-lg}\
        !            36:   %{!p:%{!pg:%{!static:-lc}%{static:-lc_n}}}\
        !            37:   %{p:-lc_p}\
        !            38:   %{pg:-lc_p}"
        !            39: #endif
        !            40:   
        !            41: /* The RISC iX assembler never deletes any symbols from the object module;
        !            42:    and, by default, ld doesn't either.  -X causes local symbols starting
        !            43:    with 'L' to be deleted, which is what we want.  */
        !            44: #ifndef LINK_SPEC
        !            45: #define LINK_SPEC "-X"
        !            46: #endif
1.1       root       47: 
                     48: #ifndef CPP_PREDEFINES
                     49: #define CPP_PREDEFINES  \
                     50:     "-Darm -Driscix -Dunix -Asystem(unix) -Acpu(arm) -Amachine(arm)"
                     51: #endif
                     52: 
                     53: #ifndef CPP_SPEC
                     54: #define CPP_SPEC "%{m6:-D__arm6__} \
                     55:        %{mbsd:%{pedantic:%e-mbsd and -pedantic incompatible} -D_BSD_C} \
                     56:        %{mxopen:%{mbsd:%e-mbsd and -mxopen incompatible}               \
                     57:          %{pedantic:%e-mxopen and -pedantic incompatible} -D_XOPEN_C}  \
                     58:        %{!mbsd:%{!mxopen:%{!ansi: -D_BSD_C}}}"
                     59: #endif
                     60: 
                     61: /* RISCiX has some wierd symbol name munging, that is done to the object module
                     62:    after assembly, which enables multiple libraries to be supported within
                     63:    one (possibly shared) library.  It basically changes the symbol name of
                     64:    certain symbols (for example _bcopy is converted to _$bcopy if using BSD)
                     65:    Symrename's parameters are determined as follows:
                     66:      -mno-symrename    Don't run symrename
                     67:      -mbsd     symrename -BSD <file>
                     68:      -mxopen   symrename -XOPEN <file>
                     69:      -ansi     symrename - <file>
                     70:      <none>    symrename -BSD <file>
                     71:  */
                     72: 
                     73: #ifndef ASM_FINAL_SPEC
1.1.1.2 ! root       74: #if !defined (CROSS_COMPILE)
1.1       root       75: #define ASM_FINAL_SPEC "\
                     76: %{!mno-symrename: \
                     77:        \n /usr/bin/symrename \
1.1.1.2 ! root       78:        -%{mbsd:%{pedantic:%e-mbsd and -pedantic incompatible}BSD}\
1.1       root       79: %{mxopen:%{mbsd:%e-mbsd and -mxopen incompatible}\
1.1.1.2 ! root       80: %{pedantic:%e-mxopen and -pedantic incompatible}XOPEN}\
1.1       root       81: %{!mbsd:%{!mxopen:%{!ansi:BSD}}} %{c:%{o*:%*}%{!o*:%b.o}}%{!c:%U.o}}"
                     82: #endif
                     83: #endif
                     84: 
                     85: /* None of these is actually used in cc1, so they modify bit 31 */
                     86: #define ARM_EXTRA_TARGET_SWITCHES \
                     87: {"bsd", 0x80000000}, {"xopen", 0x80000000}, {"no-symrename", 0x80000000},
                     88: 
                     89:     
                     90: 
                     91: /* Run-time Target Specification.  */
                     92: #define TARGET_VERSION  \
                     93:   fputs (" (ARM/RISCiX)", stderr);
                     94: 
                     95: /* This is used in ASM_FILE_START */
                     96: #define ARM_OS_NAME "RISCiX"
                     97: 
1.1.1.2 ! root       98: /* Unsigned chars produces much better code than signed.  */
1.1       root       99: #define DEFAULT_SIGNED_CHAR  0
                    100: 
1.1.1.2 ! root      101: /* Define this if the target system supports the function atexit from the
1.1       root      102:    ANSI C standard.  If this is not defined, and INIT_SECTION_ASM_OP is not
                    103:    defined, a default exit function will be provided to support C++.  
                    104:    The man page only describes on_exit, but atexit is also there.  */
                    105: #define HAVE_ATEXIT 1
1.1.1.2 ! root      106: 
1.1       root      107: /* Some systems use __main in a way incompatible with its use in gcc, in these
                    108:    cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
                    109:    give the same symbol without quotes for an alternative entry point.  You
1.1.1.2 ! root      110:    must define both, or neither. */
1.1       root      111: #ifndef NAME__MAIN
                    112: #define NAME__MAIN "__gccmain"
                    113: #define SYMBOL__MAIN __gccmain
                    114: #endif
                    115: 
1.1.1.2 ! root      116: /* size_t is "unsigned int" in RISCiX */
        !           117: #define SIZE_TYPE "unsigned int"
        !           118: 
        !           119: /* ptrdiff_t is "int" in RISCiX */
        !           120: #define PTRDIFF_TYPE "int"
        !           121: 
        !           122: /* Maths operation domain error number, EDOM */
        !           123: #define TARGET_EDOM 33
1.1       root      124: #include "arm/arm.h"
                    125: 
                    126: /* The native RISCiX assembler does not support stabs of any kind; because
                    127:    the native assembler is not used by the compiler, Acorn didn't feel it was
                    128:    necessary to put them in!  */
                    129: 
                    130: #ifdef DBX_DEBUGGING_INFO
                    131: #undef DBX_DEBUGGING_INFO
                    132: #endif

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