304 lines
11 KiB
C
304 lines
11 KiB
C
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/* Definitions of target machine for GNU compiler.
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Motorola m88100 running DG/UX.
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Copyright (C) 1988, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
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Contributed by Michael Tiemann (tiemann@mcc.com)
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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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/* You're not seeing double! To transition to dwarf debugging, both are
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supported. The option -msvr4 specifies elf. With these combinations,
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-g means dwarf. */
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/* DWARF_DEBUGGING_INFO defined in svr4.h. */
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#define SDB_DEBUGGING_INFO
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#define PREFERRED_DEBUGGING_TYPE \
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(TARGET_SVR4 ? DWARF_DEBUG : SDB_DEBUG)
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#ifndef VERSION_INFO2
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#define VERSION_INFO2 "$Revision: 1.1.1.1 $"
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#endif
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#ifndef NO_BUGS
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#define AS_BUG_IMMEDIATE_LABEL
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/* The DG/UX 4.30 assembler doesn't accept the symbol `fcr63'. */
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#define AS_BUG_FLDCR
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#endif
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#include "svr4.h"
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#include "m88k/m88k.h"
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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 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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#undef SUBTARGET_SWITCHES
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#define SUBTARGET_SWITCHES \
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{ "standard", MASK_STANDARD }, \
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{ "legend", -MASK_NOLEGEND }, \
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{ "no-legend", MASK_NOLEGEND }, \
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{ "external-legend", MASK_EXTERNAL_LEGEND }, \
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/* the following is used only in the *_SPEC's */ \
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{ "keep-coff", 0 },
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/* Default switches */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (MASK_CHECK_ZERO_DIV | \
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MASK_OCS_DEBUG_INFO | \
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MASK_OCS_FRAME_POSITION | \
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MASK_STANDARD | \
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MASK_SVR4)
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#undef CPU_DEFAULT
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#define CPU_DEFAULT MASK_88000
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/* Macros to be automatically defined. __svr4__ is our extension.
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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 "-Dm88000 -Dm88k -Dunix -DDGUX -D__CLASSIFY_TYPE__=2\
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-D__svr4__ -Asystem(unix) -Acpu(m88k) -Amachine(m88k)"
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/* If -m88100 is in effect, add -Dm88100; similarly for -m88110.
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Here, the CPU_DEFAULT is assumed to be -m88000. If not -ansi,
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-traditional, or restricting include files to one specific source
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target, specify full DG/UX features. */
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#undef CPP_SPEC
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#define CPP_SPEC "%(cpp_cpu) %{msvr3:-D_M88KBCS_TARGET} %{!msvr3:-D_DGUX_TARGET}"
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/* Assembler support (-V, silicon filter, legends for mxdb). */
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#undef ASM_SPEC
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#define ASM_SPEC "%{pipe:%{!.s: - }\
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%{!msvr3:%{!m88110:-KV3 }%{m88110:-KV04.00 }}}\
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%(asm_cpu)"
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/* Override svr4.h. */
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#undef ASM_FINAL_SPEC
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#undef STARTFILE_SPEC
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/* Linker and library spec's.
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-msvr4 is the default if -msvr3 is not specified.
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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 the link line.
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-msvr3 indicates linking done in a COFF environment and the link
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script is added to the link line. In all environments, the first
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and last objects are crtbegin.o (or bcscrtbegin.o) and crtend.o.
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When the -G link option is used (-shared and -symbolic) a final
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link is not being done. */
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC "crtend.o%s"
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#undef LIB_SPEC
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#define LIB_SPEC "%{!msvr3:%{!shared:-lstaticdgc}} %{!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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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%(startfile_default)"
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/* This macro defines names of additional specifications to put in the specs
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that can be used in various specifications like CC1_SPEC. Its definition
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is an initializer with a subgrouping for each command option.
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Each subgrouping contains a string constant, that defines the
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specification name, and a string constant that used by the GNU CC driver
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program.
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Do not define this macro if it does not need to do anything. */
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#define EXTRA_SPECS \
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{ "cpp_cpu", CPP_CPU_SPEC }, \
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{ "asm_cpu", ASM_CPU_SPEC }, \
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{ "startfile_default", STARTFILE_DEFAULT_SPEC }, \
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{ "startfile_crtbegin", STARTFILE_CRTBEGIN_SPEC }
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#define ASM_CPU_SPEC "\
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%{v:-V}\
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%{g:\
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%{mno-legend:-Wc,off}\
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%{!mno-legend:-Wc,-fix-bb,-s\"%i\"\
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%{traditional:,-lc}\
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%{!traditional:,-lansi-c}\
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%{mstandard:,-keep-std}\
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%{mexternal-legend:,-external}\
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%{mocs-frame-position:,-ocs}}}"
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#define CPP_CPU_SPEC "\
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%{!m88000:%{!m88100:%{m88110:-D__m88110__}}} \
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%{!m88000:%{!m88110:%{m88100:-D__m88100__}}} \
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%{!ansi:%{!traditional:-D__OPEN_NAMESPACE__}}"
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#define STARTFILE_DEFAULT_SPEC "\
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%{!shared:%{!symbolic:%{pg:gcrt0.o%s} \
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%{!pg:%{p:/lib/mcrt0.o}%{!p:/lib/crt0.o}} \
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%(startfile_crtbegin) \
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%{svr4:%{ansi:/lib/values-Xc.o} \
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%{!ansi:%{traditional:/lib/values-Xt.o} \
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%{!traditional:/usr/lib/values-Xa.o}}}}}"
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#define STARTFILE_CRTBEGIN_SPEC "\
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%{msvr3:m88kdgux.ld%s bcscrtbegin.o%s} \
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%{!msvr3:crtbegin.o%s}"
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#undef GPLUSPLUS_INCLUDE_DIR
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#define GPLUSPLUS_INCLUDE_DIR "/usr/opt/g++/lib/g++-include"
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/* Fast DG/UX version of profiler that does not require lots of
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registers to be stored. */
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(FILE, LABELNO) \
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output_function_profiler (FILE, LABELNO, "gcc.mcount", 0)
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/* Output the legend info for mxdb when debugging except if standard
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debugging information only is explicitly requested. */
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#undef ASM_FIRST_LINE
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#define ASM_FIRST_LINE(FILE) \
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do { \
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if (TARGET_SVR4) \
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{ \
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if (TARGET_88110) \
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fprintf (FILE, "\t%s\t \"%s\"\n", VERSION_ASM_OP, "04.00"); \
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else \
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fprintf (FILE, "\t%s\t \"%s\"\n", VERSION_ASM_OP, "03.00"); \
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} \
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if (write_symbols != NO_DEBUG && !TARGET_NOLEGEND) \
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{ \
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fprintf (FILE, ";legend_info -fix-bb -h\"gcc-%s\" -s\"%s\"", \
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VERSION_STRING, main_input_filename); \
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fputs (flag_traditional ? " -lc" : " -lansi-c", FILE); \
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if (TARGET_STANDARD) \
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fputs (" -keep-std", FILE); \
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if (TARGET_EXTERNAL_LEGEND) \
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fputs (" -external", FILE); \
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if (TARGET_OCS_FRAME_POSITION) \
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fputs (" -ocs", FILE); \
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fputc ('\n', FILE); \
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} \
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} while (0)
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/* Override svr4.h. */
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#undef PTRDIFF_TYPE
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#undef WCHAR_TYPE
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#undef WCHAR_TYPE_SIZE
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/* Override svr4.h and m88k.h except when compiling crtstuff.c. These must
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be constant strings when compiling crtstuff.c. Otherwise, respect the
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-mversion-STRING option used. */
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#undef INIT_SECTION_PREAMBLE
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#undef INIT_SECTION_ASM_OP
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#undef FINI_SECTION_ASM_OP
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#undef CTORS_SECTION_ASM_OP
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#undef DTORS_SECTION_ASM_OP
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#if defined (CRT_BEGIN) || defined (CRT_END) || defined (L__main)
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/* routines to invoke global constructors and destructors are always COFF
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to enable linking mixed COFF and ELF objects */
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#define FINI_SECTION_ASM_OP ("section .fini,\"x\"")
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#ifndef BCS
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#define INIT_SECTION_PREAMBLE asm ("\taddu\tr31,r31,0x20")
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#endif
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#undef INIT_SECTION_ASM_OP
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#define INIT_SECTION_ASM_OP ("section\t .init,\"x\"")
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#undef CTORS_SECTION_ASM_OP
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#define CTORS_SECTION_ASM_OP ("section\t .ctors,\"d\"")
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#undef DTORS_SECTION_ASM_OP
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#define DTORS_SECTION_ASM_OP ("section\t .dtors,\"d\"")
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#undef OBJECT_FORMAT_ELF
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#else
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#undef INIT_SECTION_ASM_OP
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#define INIT_SECTION_ASM_OP (TARGET_SVR4 \
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? "section\t .init,\"xa\"" \
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: "section\t .init,\"x\"")
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#undef CTORS_SECTION_ASM_OP
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#define CTORS_SECTION_ASM_OP (TARGET_SVR4 \
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? "section\t .ctors,\"aw\"" \
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: "section\t .ctors,\"d\"")
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#undef DTORS_SECTION_ASM_OP
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#define DTORS_SECTION_ASM_OP (TARGET_SVR4 \
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? "section\t .dtors,\"aw\"" \
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: "section\t .dtors,\"d\"")
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#endif /* crtstuff.c */
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/* The lists of global object constructors and global destructors are always
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placed in the .ctors/.dtors sections. This requires the use of a link
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script if the COFF linker is used, but otherwise COFF and ELF objects
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can be intermixed. A COFF object will pad the section to 16 bytes with
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zeros; and ELF object will not contain padding. We deal with this by
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putting a -1 marker at the begin and end of the list and ignoring zero
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entries. */
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/* Mark the end of the .ctors/.dtors sections with a -1. */
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#define CTOR_LIST_BEGIN \
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asm (CTORS_SECTION_ASM_OP); \
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func_ptr __CTOR_LIST__[1] = { (func_ptr) (-1) }
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#define CTOR_LIST_END \
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asm (CTORS_SECTION_ASM_OP); \
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func_ptr __CTOR_END__[1] = { (func_ptr) (-1) }
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#define DTOR_LIST_BEGIN \
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asm (DTORS_SECTION_ASM_OP); \
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func_ptr __DTOR_LIST__[1] = { (func_ptr) (-1) }
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#define DTOR_LIST_END \
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asm (DTORS_SECTION_ASM_OP); \
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func_ptr __DTOR_END__[1] = { (func_ptr) (-1) }
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/* Walk the list ignoring NULL entries till we hit the terminating -1. */
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#define DO_GLOBAL_CTORS_BODY \
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do { \
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int i; \
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for (i=1;(int)(__CTOR_LIST__[i]) != -1; i++) \
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if (((int *)__CTOR_LIST__)[i] != 0) \
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__CTOR_LIST__[i] (); \
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} while (0)
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/* Walk the list looking for the terminating -1 that marks the end.
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Go backward and ignore any NULL entries. */
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#define DO_GLOBAL_DTORS_BODY \
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do { \
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int i; \
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for (i=1;(int)(__DTOR_LIST__[i]) != -1; i++); \
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for (i-=1;(int)(__DTOR_LIST__[i]) != -1; i--) \
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if (((int *)__DTOR_LIST__)[i] != 0) \
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__DTOR_LIST__[i] (); \
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} while (0)
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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) \
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{ \
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if (flag_pic && symbolic_operand (RTX)) \
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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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