258 lines
8.7 KiB
C
258 lines
8.7 KiB
C
/* Target definitions for GNU compiler for Intel 80x86 running DG/ux
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Copyright (C) 1993, 1995, 1996, 1997, 1998, 2000, 2001
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Free Software Foundation, Inc.
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Currently maintained by gcc@dg-rtp.dg.com.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* for now, we are just like the sysv4 version with a
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few hacks
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*/
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#ifndef VERSION_INFO2
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#define VERSION_INFO2 "$Revision: 1.16 $"
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#endif
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#ifndef VERSION_STRING
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#define VERSION_STRING version_string
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#endif
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/* Identify the compiler. */
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/* TARGET_VERSION used by toplev.c VERSION_STRING used by -midentify-revision */
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#undef TARGET_VERSION
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#define TARGET_VERSION fprintf (stderr, " (%s%s, %s)", \
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VERSION_INFO1, VERSION_INFO2, __DATE__)
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#undef VERSION_INFO1
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#define VERSION_INFO1 "ix86 DG/ux, "
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/* Augment TARGET_SWITCHES with the MXDB options. */
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#define MASK_STANDARD 0x40000000 /* Retain standard information */
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#define MASK_NOLEGEND 0x20000000 /* Discard legend information */
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#define MASK_EXTERNAL_LEGEND 0x10000000 /* Make external legends */
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#define MASK_IDENTIFY_REVISION 0x08000000 /* Emit 'ident' to .s */
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#define MASK_WARN_PASS_STRUCT 0x04000000 /* Warn when structures are passed */
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#define TARGET_STANDARD (target_flags & MASK_STANDARD)
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#define TARGET_NOLEGEND (target_flags & MASK_NOLEGEND)
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#define TARGET_EXTERNAL_LEGEND (target_flags & MASK_EXTERNAL_LEGEND)
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#define TARGET_IDENTIFY_REVISION (target_flags & MASK_IDENTIFY_REVISION)
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#define TARGET_WARN_PASS_STRUCT (target_flags & MASK_WARN_PASS_STRUCT)
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#undef SUBTARGET_SWITCHES
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#define SUBTARGET_SWITCHES \
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{ "standard", MASK_STANDARD, \
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N_("Retain standard MXDB information") }, \
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{ "legend", -MASK_NOLEGEND, \
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N_("Retain legend information") }, \
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{ "no-legend", MASK_NOLEGEND, "" }, \
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{ "external-legend", MASK_EXTERNAL_LEGEND, \
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N_("Generate external legend information") }, \
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{ "identify-revision", MASK_IDENTIFY_REVISION, \
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N_("Emit identifying info in .s file") }, \
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{ "warn-passed-structs", MASK_WARN_PASS_STRUCT, \
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N_("Warn when a function arg is a structure") },
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#undef DWARF_DEBUGGING_INFO
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#define DWARF_DEBUGGING_INFO
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/*
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allow -gstabs so that those who have gnu-as installed
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can debug c++ programs.
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*/
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#undef DBX_DEBUGGING_INFO
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#define DBX_DEBUGGING_INFO
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#undef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
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/* Override svr[34].h. Switch to the data section so that the coffsem
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symbol isn't in the text section. */
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#undef ASM_FILE_START
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#define ASM_FILE_START(FILE) \
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do { \
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output_file_directive (FILE, main_input_filename); \
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fprintf (FILE, "\t.version\t\"01.01\"\n"); \
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data_section (); \
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} while (0)
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/* ix86 abi specified type for wchar_t */
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "long int"
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE BITS_PER_WORD
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/* Some machines may desire to change what optimizations are performed for
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various optimization levels. This macro, if defined, is executed once
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just after the optimization level is determined and before the remainder
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of the command options have been parsed. Values set in this macro are
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used as the default values for the other command line options.
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LEVEL is the optimization level specified; 2 if -O2 is specified,
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1 if -O is specified, and 0 if neither is specified. */
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/* This macro used to store 0 in flag_signed_bitfields.
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Not only is that misuse of this macro; the whole idea is wrong.
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The GNU C dialect makes bitfields signed by default,
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regardless of machine type. Making any machine inconsistent in this
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regard is bad for portability.
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I chose to make bitfields signed by default because this is consistent
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with the way ordinary variables are handled: `int' equals `signed int'.
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If there is a good reason to prefer making bitfields unsigned by default,
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it cannot have anything to do with the choice of machine.
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If the reason is good enough, we should change the convention for all machines.
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-- rms, 20 July 1991. */
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/*
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this really should go into dgux-local.h
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*/
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#undef OPTIMIZATION_OPTIONS
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#define OPTIMIZATION_OPTIONS(LEVEL,SIZE) \
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do { \
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extern int flag_signed_bitfields; \
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flag_signed_bitfields = 0; \
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optimization_options (LEVEL,SIZE); \
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} while (0)
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/* The normal location of the `ld' and `as' programs */
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#undef MD_EXEC_PREFIX
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#define MD_EXEC_PREFIX "/usr/bin/"
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/* The normal location of the various *crt*.o files is the */
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#undef MD_STARTFILE_PREFIX
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#define MD_STARTFILE_PREFIX "/usr/lib/"
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/* Macros to be automatically defined.
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__CLASSIFY_TYPE__ is used in the <varargs.h> and <stdarg.h> header
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files with DG/UX revision 5.40 and later. This allows GNU CC to
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operate without installing the header files. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-D__ix86 -Dunix -DDGUX -D__CLASSIFY_TYPE__=2\
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-Asystem=unix -Asystem=svr4"
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/*
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If not -ansi, -traditional, or restricting include files to one
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specific source target, specify full DG/UX features.
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*/
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#undef CPP_SPEC
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#define CPP_SPEC "%(cpp_cpu) %{!ansi:%{!traditional:-D__OPEN_NAMESPACE__}}"
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/* Assembler support (legends for mxdb). */
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#undef ASM_SPEC
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#define ASM_SPEC "\
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%{mno-legend:%{mstandard:-Wc,off}}\
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%{g:%{!mno-legend:-Wc,-fix-bb,-s\"%i\"\
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%{traditional:,-lc}%{!traditional:,-lansi-c}\
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%{mstandard:,-keep-std}\
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%{mexternal-legend:,-external}}}"
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/* Override svr4.h. */
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/* hassey 3/12/94 keep svr4 ASM_FINAL_SPEC allows -pipe to work */
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/* Linker and library spec's.
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-static, -shared, -symbolic, -h* and -z* access AT&T V.4 link options.
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-svr4 instructs gcc to place /usr/lib/values-X[cat].o on link the line.
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The absence of -msvr4 indicates linking done in a COFF environment and
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adds the link script to the link line. In all environments, the first
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and last objects are crtbegin.o and crtend.o.
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When the -G link option is used (-shared and -symbolic) a final link is
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not being done. */
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#undef LIB_SPEC
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#define LIB_SPEC \
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"%{!shared:%{!symbolic:-lc}}"
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#undef LINK_SPEC
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#define LINK_SPEC "%{z*} %{h*} %{v:-V} \
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%{static:-dn -Bstatic} \
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%{shared:-G -dy} \
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%{symbolic:-Bsymbolic -G -dy} \
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%{pg:-L/usr/lib/libp}%{p:-L/usr/lib/libp}"
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#ifdef CROSS_COMPILE
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{!shared:%{!symbolic:%{pg:gcrt1.o%s} \
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%{!pg:%{p:mcrt1.o%s} \
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%{!p:crt1.o%s}}}} \
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%{pg:gcrti.o%s}%{!pg:crti.o%s} \
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crtbegin.o%s \
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%{ansi:values-Xc.o%s} \
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%{!ansi:%{traditional:values-Xt.o%s} \
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%{!traditional:values-Xa.o%s}}"
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o}%{!pg:crtn.o%s}"
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#else
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{!shared:%{!symbolic:%{pg:gcrt1.o%s} \
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%{!pg:%{p:/lib/mcrt1.o%s} \
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%{!p:/lib/crt1.o%s}}}} \
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%{pg:gcrti.o%s}%{!pg:/lib/crti.o%s} \
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crtbegin.o%s \
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%{ansi:/lib/values-Xc.o%s} \
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%{!ansi:%{traditional:/lib/values-Xt.o%s} \
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%{!traditional:/lib/values-Xa.o%s}}"
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o}%{!pg:/lib/crtn.o}"
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#endif /* CROSS_COMPILE */
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/* The maximum alignment which the object file format can support.
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page alignment would seem to be enough */
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#undef MAX_OFILE_ALIGNMENT
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#define MAX_OFILE_ALIGNMENT 0x1000
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/* Must use data section for relocatable constants when pic. */
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#undef SELECT_RTX_SECTION
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#define SELECT_RTX_SECTION(MODE,RTX,ALIGN) \
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{ \
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if (flag_pic && symbolic_operand (RTX, VOIDmode)) \
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data_section (); \
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else \
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const_section (); \
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}
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/* This supplements FUNCTION_ARG's definition in i386.h to check
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TARGET_WARN_PASS_STRUCT */
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#undef FUNCTION_ARG
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#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
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((((MODE) == BLKmode && TARGET_WARN_PASS_STRUCT) ? \
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warning ("argument is a structure"),0 : 0), \
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(function_arg (&CUM, MODE, TYPE, NAMED)))
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/* Add .align 1 to avoid .backalign bug in assembler */
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#undef CONST_SECTION_ASM_OP
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#define CONST_SECTION_ASM_OP "\t.section\t.rodata\n\t.align 1"
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