307 lines
10 KiB
C
307 lines
10 KiB
C
/* Definitions of target machine for GNU compiler, for SPARC running Solaris 2
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Copyright 1992, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
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Free Software Foundation, Inc.
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Contributed by Ron Guilmette (rfg@netcom.com).
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Additional changes by David V. Henkel-Wallace (gumby@cygnus.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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/* Supposedly the same as vanilla sparc svr4, except for the stuff below: */
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/* Solaris 2 (at least as of 2.5.1) uses a 32-bit 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 32
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/* Solaris 2 uses a wint_t different from the default. This is required
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by the SCD 2.4.1, p. 6-83, Figure 6-66. */
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#undef WINT_TYPE
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#define WINT_TYPE "long int"
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#undef WINT_TYPE_SIZE
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#define WINT_TYPE_SIZE 32
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#define HANDLE_PRAGMA_REDEFINE_EXTNAME 1
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES \
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"-Dsparc -Dsun -Dunix -D__svr4__ -D__SVR4 -D__PRAGMA_REDEFINE_EXTNAME \
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-Asystem=unix -Asystem=svr4"
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#undef CPP_SUBTARGET_SPEC
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#define CPP_SUBTARGET_SPEC "\
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%{pthreads:-D_REENTRANT -D_PTHREADS} \
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%{!pthreads:%{threads:-D_REENTRANT -D_SOLARIS_THREADS}} \
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%{compat-bsd:-iwithprefixbefore ucbinclude -I/usr/ucbinclude} \
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"
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/* For C++ we need to add some additional macro definitions required
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by the C++ standard library. */
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#define CPLUSPLUS_CPP_SPEC "\
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-D_XOPEN_SOURCE=500 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1 \
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-D__EXTENSIONS__ \
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%(cpp) \
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"
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/* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
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It's safe to pass -s always, even if -g is not used. */
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#undef ASM_SPEC
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#define ASM_SPEC "\
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%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
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%{fpic:-K PIC} %{fPIC:-K PIC} \
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%(asm_cpu) \
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"
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/* This is here rather than in sparc.h because it's not known what
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other assemblers will accept. */
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#if TARGET_CPU_DEFAULT == TARGET_CPU_v9
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#undef ASM_CPU_DEFAULT_SPEC
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#define ASM_CPU_DEFAULT_SPEC "-xarch=v8plus"
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#endif
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#if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
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#undef ASM_CPU_DEFAULT_SPEC
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#define ASM_CPU_DEFAULT_SPEC "-xarch=v8plusa"
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#endif
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#undef ASM_CPU_SPEC
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#define ASM_CPU_SPEC "\
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%{mcpu=v8plus:-xarch=v8plus} \
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%{mcpu=v9:-xarch=v8plus} \
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%{mcpu=ultrasparc:-xarch=v8plusa} \
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%{!mcpu*:%(asm_cpu_default)} \
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"
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/* However it appears that Solaris 2.0 uses the same reg numbering as
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the old BSD-style system did. */
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/* Same as sparc.h */
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#undef DBX_REGISTER_NUMBER
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#define DBX_REGISTER_NUMBER(REGNO) \
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(TARGET_FLAT && (REGNO) == HARD_FRAME_POINTER_REGNUM ? 31 : REGNO)
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/* We use stabs-in-elf by default, because that is what the native
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toolchain uses. */
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#undef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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/* The Solaris 2 assembler uses .skip, not .zero, so put this back. */
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#undef ASM_OUTPUT_SKIP
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#define ASM_OUTPUT_SKIP(FILE,SIZE) \
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fprintf (FILE, "\t.skip %u\n", (SIZE))
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#undef LOCAL_LABEL_PREFIX
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#define LOCAL_LABEL_PREFIX "."
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/* This is how to output a definition of an internal numbered label where
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PREFIX is the class of label and NUM is the number within the class. */
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#undef ASM_OUTPUT_INTERNAL_LABEL
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#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
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fprintf (FILE, ".L%s%d:\n", PREFIX, NUM)
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/* This is how to output a reference to an internal numbered label where
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PREFIX is the class of label and NUM is the number within the class. */
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#undef ASM_OUTPUT_INTERNAL_LABELREF
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#define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM) \
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fprintf (FILE, ".L%s%d", PREFIX, NUM)
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/* This is how to store into the string LABEL
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the symbol_ref name of an internal numbered label where
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PREFIX is the class of label and NUM is the number within the class.
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This is suitable for output with `assemble_name'. */
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#undef ASM_GENERATE_INTERNAL_LABEL
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#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
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sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
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/* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us.
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We don't use the standard LIB_SPEC only because we don't yet support c++ */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{!shared: \
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%{!symbolic: \
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%{p:mcrt1.o%s} \
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%{!p: \
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%{pg:gcrt1.o%s gmon.o%s} \
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%{!pg:crt1.o%s}}}} \
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crti.o%s \
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%{ansi:values-Xc.o%s} \
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%{!ansi: \
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%{traditional:values-Xt.o%s} \
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%{!traditional:values-Xa.o%s}} \
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crtbegin.o%s"
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/* ??? Note: in order for -compat-bsd to work fully,
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we must somehow arrange to fixincludes /usr/ucbinclude
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and put the result in $(libsubdir)/ucbinclude. */
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#undef LIB_SPEC
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#define LIB_SPEC \
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"%{compat-bsd:-lucb -lsocket -lnsl -lelf -laio} \
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%{!shared:\
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%{!symbolic:\
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%{pthreads:-lpthread} \
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%{!pthreads:%{threads:-lthread}} \
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%{p|pg:-ldl} -lc}}"
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC \
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"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
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crtend.o%s crtn.o%s"
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/* This should be the same as in svr4.h, except with -R added. */
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#undef LINK_SPEC
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#define LINK_SPEC \
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"%{h*} %{v:-V} \
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%{b} %{Wl,*:%*} \
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%{static:-dn -Bstatic} \
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%{shared:-G -dy %{!mimpure-text:-z text}} \
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%{symbolic:-Bsymbolic -G -dy -z text} \
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%{G:-G} \
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%{YP,*} \
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%{R*} \
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%{compat-bsd: \
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%{!YP,*:%{pg:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
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%{!pg:%{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
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%{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}}} \
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-R /usr/ucblib} \
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%{!compat-bsd: \
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%{!YP,*:%{pg:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
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%{!pg:%{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
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%{!p:-Y P,/usr/ccs/lib:/usr/lib}}}} \
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%{Qy:} %{!Qn:-Qy}"
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/* This defines which switch letters take arguments.
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It is as in svr4.h but with -R added. */
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#undef SWITCH_TAKES_ARG
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#define SWITCH_TAKES_ARG(CHAR) \
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(DEFAULT_SWITCH_TAKES_ARG(CHAR) \
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|| (CHAR) == 'R' \
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|| (CHAR) == 'h' \
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|| (CHAR) == 'x' \
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|| (CHAR) == 'z')
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/* Select a format to encode pointers in exception handling data. CODE
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is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
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true if the symbol may be affected by dynamic relocations.
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Some Solaris dynamic linkers don't handle unaligned section relative
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relocs properly, so force them to be aligned. */
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#ifndef HAVE_AS_SPARC_UA_PCREL
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#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
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((flag_pic || GLOBAL) ? DW_EH_PE_aligned : DW_EH_PE_absptr)
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#endif
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/* ??? This does not work in SunOS 4.x, so it is not enabled in sparc.h.
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Instead, it is enabled here, because it does work under Solaris. */
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/* Define for support of TFmode long double and REAL_ARITHMETIC.
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Sparc ABI says that long double is 4 words. */
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#define LONG_DOUBLE_TYPE_SIZE 128
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/* But indicate that it isn't supported by the hardware. */
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#define WIDEST_HARDWARE_FP_SIZE 64
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#define STDC_0_IN_SYSTEM_HEADERS 1
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#define MULDI3_LIBCALL "__mul64"
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#define DIVDI3_LIBCALL "__div64"
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#define UDIVDI3_LIBCALL "__udiv64"
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#define MODDI3_LIBCALL "__rem64"
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#define UMODDI3_LIBCALL "__urem64"
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/* Solaris's _Qp_* library routine implementation clobbers the output
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memory before the inputs are fully consumed. */
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#undef TARGET_BUGGY_QP_LIB
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#define TARGET_BUGGY_QP_LIB 1
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#undef INIT_SUBTARGET_OPTABS
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#define INIT_SUBTARGET_OPTABS \
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fixsfdi_libfunc \
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= init_one_libfunc (TARGET_ARCH64 ? "__ftol" : "__ftoll"); \
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fixunssfdi_libfunc \
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= init_one_libfunc (TARGET_ARCH64 ? "__ftoul" : "__ftoull"); \
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fixdfdi_libfunc \
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= init_one_libfunc (TARGET_ARCH64 ? "__dtol" : "__dtoll"); \
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fixunsdfdi_libfunc \
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= init_one_libfunc (TARGET_ARCH64 ? "__dtoul" : "__dtoull")
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/* Solaris allows 64 bit out and global registers in 32 bit mode.
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sparc_override_options will disable V8+ if not generating V9 code. */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (MASK_FPU + MASK_V8PLUS + MASK_LONG_DOUBLE_128)
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/*
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* Attempt to turn on access permissions for the stack.
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*
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* This code must be defined when compiling gcc but not when compiling
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* libgcc2.a, unless we're generating code for 64 bits SPARC
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*
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* _SC_STACK_PROT is only defined for post 2.6, but we want this code
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* to run always. 2.6 can change the stack protection but has no way to
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* query it.
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*
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*/
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/* This declares mprotect (used in TRANSFER_FROM_TRAMPOLINE) for
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libgcc2.c. */
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/* We don't want to include this because sys/mman.h is not present on
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some non-Solaris configurations that use sol2.h. */
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#if 0 /* def L_trampoline */
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#include <sys/mman.h>
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#endif
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#define TRANSFER_FROM_TRAMPOLINE \
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static int need_enable_exec_stack; \
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\
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static void check_enabling(void) __attribute__ ((constructor)); \
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static void check_enabling(void) \
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{ \
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extern long sysconf(int); \
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\
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int prot = (int) sysconf(515 /*_SC_STACK_PROT */); \
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if (prot != 7) \
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need_enable_exec_stack = 1; \
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} \
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\
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extern void __enable_execute_stack (void *); \
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void \
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__enable_execute_stack (addr) \
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void *addr; \
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{ \
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if (!need_enable_exec_stack) \
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return; \
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else { \
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long size = getpagesize (); \
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long mask = ~(size-1); \
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char *page = (char *) (((long) addr) & mask); \
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char *end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
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\
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/* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \
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if (mprotect (page, end - page, 7) < 0) \
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perror ("mprotect of trampoline code"); \
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} \
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}
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