444 lines
14 KiB
C
444 lines
14 KiB
C
/* Definitions for 64-bit SPARC running Linux-based GNU systems with ELF.
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Copyright 1996, 1997, 1998, 2000, 2002 Free Software Foundation, Inc.
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Contributed by David S. Miller (davem@caip.rutgers.edu)
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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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#define LINUX_DEFAULT_ELF
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/* Don't assume anything about the header files. */
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#define NO_IMPLICIT_EXTERN_C
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#undef MD_EXEC_PREFIX
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#undef MD_STARTFILE_PREFIX
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#if TARGET_CPU_DEFAULT == TARGET_CPU_v9 || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
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/* A 64 bit v9 compiler with stack-bias,
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in a Medium/Low code model environment. */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT \
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(MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \
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+ MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
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#endif
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#undef ASM_CPU_DEFAULT_SPEC
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#define ASM_CPU_DEFAULT_SPEC "-Av9a"
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#ifdef SPARC_BI_ARCH
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#undef CPP_ARCH32_SPEC
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#define CPP_ARCH32_SPEC "%{mlong-double-128:-D__LONG_DOUBLE_128__} \
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-D__GCC_NEW_VARARGS__ -Acpu=sparc -Amachine=sparc"
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#endif
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/* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add
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the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
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provides part of the support for getting C++ file-scope static
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object constructed before entering `main'. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC \
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"%{!shared:%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
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crti.o%s %{static:crtbeginT.o%s}\
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%{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
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/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
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the GNU/Linux magical crtend.o file (see crtstuff.c) which
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provides part of the support for getting C++ file-scope static
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object constructed before entering `main', followed by a normal
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GNU/Linux "finalizer" file, `crtn.o'. */
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC \
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"%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s\
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%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
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/* The GNU C++ standard library requires that these macros be defined. */
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#undef CPLUSPLUS_CPP_SPEC
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#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
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#undef TARGET_VERSION
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#define TARGET_VERSION fprintf (stderr, " (sparc64 GNU/Linux with ELF)");
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/* The default code model. */
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#undef SPARC_DEFAULT_CMODEL
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#define SPARC_DEFAULT_CMODEL CM_MEDLOW
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#undef SUBTARGET_SWITCHES
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#define SUBTARGET_SWITCHES \
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{"long-double-64", -MASK_LONG_DOUBLE_128, N_("Use 64 bit long doubles") }, \
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{"long-double-128", MASK_LONG_DOUBLE_128, N_("Use 128 bit long doubles") },
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "int"
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 32
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/* Define for support of TFmode long double.
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SPARC ABI says that long double is 4 words. */
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#undef LONG_DOUBLE_TYPE_SIZE
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#define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
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/* Constant which presents upper bound of the above value. */
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#undef MAX_LONG_DOUBLE_TYPE_SIZE
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#define MAX_LONG_DOUBLE_TYPE_SIZE 128
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/* Define this to set long double type size to use in libgcc2.c, which can
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not depend on target_flags. */
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#if defined(__arch64__) || defined(__LONG_DOUBLE_128__)
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#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
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#else
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#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
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#endif
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-D__ELF__ -Dunix -D_LONGLONG -D__sparc__ -D__gnu_linux__ -Dlinux -Asystem=unix -Asystem=posix"
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#undef CPP_SUBTARGET_SPEC
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#define CPP_SUBTARGET_SPEC "\
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%{fPIC:-D__PIC__ -D__pic__} \
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%{fpic:-D__PIC__ -D__pic__} \
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%{posix:-D_POSIX_SOURCE} \
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%{pthread:-D_REENTRANT} \
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"
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#undef LIB_SPEC
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#define LIB_SPEC \
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"%{pthread:-lpthread} \
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%{shared:-lc} \
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%{!shared: %{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"
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/* Provide a LINK_SPEC appropriate for GNU/Linux. Here we provide support
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for the special GCC options -static and -shared, which allow us to
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link things in one of these three modes by applying the appropriate
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combinations of options at link-time. We like to support here for
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as many of the other GNU linker options as possible. But I don't
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have the time to search for those flags. I am sure how to add
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support for -soname shared_object_name. H.J.
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I took out %{v:%{!V:-V}}. It is too much :-(. They can use
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-Wl,-V.
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When the -shared link option is used a final link is not being
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done. */
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/* If ELF is the default format, we should not use /lib/elf. */
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#ifdef SPARC_BI_ARCH
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#undef SUBTARGET_EXTRA_SPECS
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#define SUBTARGET_EXTRA_SPECS \
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{ "link_arch32", LINK_ARCH32_SPEC }, \
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{ "link_arch64", LINK_ARCH64_SPEC }, \
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{ "link_arch_default", LINK_ARCH_DEFAULT_SPEC }, \
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{ "link_arch", LINK_ARCH_SPEC },
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#define LINK_ARCH32_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
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%{!shared: \
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%{!ibcs: \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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%{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \
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%{static:-static}}} \
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"
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#define LINK_ARCH64_SPEC "-m elf64_sparc -Y P,/usr/lib64 %{shared:-shared} \
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%{!shared: \
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%{!ibcs: \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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%{!dynamic-linker:-dynamic-linker /lib64/ld-linux.so.2}} \
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%{static:-static}}} \
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"
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#define LINK_ARCH_SPEC "\
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%{m32:%(link_arch32)} \
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%{m64:%(link_arch64)} \
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%{!m32:%{!m64:%(link_arch_default)}} \
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"
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#define LINK_ARCH_DEFAULT_SPEC \
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(DEFAULT_ARCH32_P ? LINK_ARCH32_SPEC : LINK_ARCH64_SPEC)
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#undef LINK_SPEC
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#define LINK_SPEC "\
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%(link_arch) \
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%{mlittle-endian:-EL} \
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%{!mno-relax:%{!r:-relax}} \
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"
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#undef CC1_SPEC
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#if DEFAULT_ARCH32_P
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#define CC1_SPEC "\
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%{sun4:} %{target:} \
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%{mcypress:-mcpu=cypress} \
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%{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
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%{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
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%{m32:%{m64:%emay not use both -m32 and -m64}} \
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%{m64:-mptr64 -mstack-bias -mlong-double-128 \
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%{!mcpu*:%{!mcypress:%{!msparclite:%{!mf930:%{!mf934:%{!mv8:%{!msupersparc:-mcpu=ultrasparc}}}}}}} \
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%{!mno-vis:%{!mcpu=v9:-mvis}}} \
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"
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#else
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#define CC1_SPEC "\
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%{sun4:} %{target:} \
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%{mcypress:-mcpu=cypress} \
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%{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
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%{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
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%{m32:%{m64:%emay not use both -m32 and -m64}} \
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%{m32:-mptr32 -mno-stack-bias %{!mlong-double-128:-mlong-double-64} \
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%{!mcpu*:%{!mcypress:%{!msparclite:%{!mf930:%{!mf934:%{!mv8:%{!msupersparc:-mcpu=cypress}}}}}}}} \
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%{!m32:%{!mcpu*:-mcpu=ultrasparc}} \
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%{!mno-vis:%{!m32:%{!mcpu=v9:-mvis}}} \
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"
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#endif
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#if DEFAULT_ARCH32_P
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#define MULTILIB_DEFAULTS { "m32" }
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#else
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#define MULTILIB_DEFAULTS { "m64" }
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#endif
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#else /* !SPARC_BI_ARCH */
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#undef LINK_SPEC
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#define LINK_SPEC "-m elf64_sparc -Y P,/usr/lib64 %{shared:-shared} \
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%{!shared: \
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%{!ibcs: \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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%{!dynamic-linker:-dynamic-linker /lib64/ld-linux.so.2}} \
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%{static:-static}}} \
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%{mlittle-endian:-EL} \
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%{!mno-relax:%{!r:-relax}} \
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"
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#endif /* !SPARC_BI_ARCH */
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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} \
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%{v:%{!V:-V}} \
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%{!Qn:-Qy} \
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%{n} \
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%{T} \
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%{Ym,*} \
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%{Wa,*:%*} \
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-s %{fpic:-K PIC} %{fPIC:-K PIC} \
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%{mlittle-endian:-EL} \
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%(asm_cpu) %(asm_arch) %(asm_relax)"
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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) (REGNO)
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/* System V Release 4 uses DWARF debugging info. Buf DWARF1 doesn't do
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64-bit anything, so we use DWARF2. */
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#undef DWARF_DEBUGGING_INFO
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#define DWARF2_DEBUGGING_INFO 1
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#define DBX_DEBUGGING_INFO 1
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#undef ASM_OUTPUT_ALIGNED_LOCAL
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#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
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do { \
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fputs ("\t.local\t", (FILE)); \
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assemble_name ((FILE), (NAME)); \
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putc ('\n', (FILE)); \
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ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
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} while (0)
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#undef COMMON_ASM_OP
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#define COMMON_ASM_OP "\t.common\t"
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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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/* DWARF bits. */
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/* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets.
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Obviously the Dwarf2 folks haven't tried to actually build systems
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with their spec. On a 64-bit system, only 64-bit relocs become
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RELATIVE relocations. */
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/* #define DWARF_OFFSET_SIZE PTR_SIZE */
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#if defined(HAVE_LD_EH_FRAME_HDR)
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#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
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#endif
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/* Don't be different from other Linux platforms in this regard. */
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#define HANDLE_PRAGMA_PACK_PUSH_POP
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/* We use GNU ld so undefine this so that attribute((init_priority)) works. */
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#undef CTORS_SECTION_ASM_OP
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#undef DTORS_SECTION_ASM_OP
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#undef LINK_GCC_C_SEQUENCE_SPEC
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#define LINK_GCC_C_SEQUENCE_SPEC \
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"%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
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/* Do code reading to identify a signal frame, and set the frame
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state data appropriately. See unwind-dw2.c for the structs. */
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/* Handle multilib correctly. */
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#if defined(__arch64__)
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/* 64-bit SPARC version */
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#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
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do { \
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unsigned int *pc_ = (CONTEXT)->ra; \
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long new_cfa_, i_; \
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long regs_off_, fpu_save_off_; \
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long this_cfa_, fpu_save_; \
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\
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if (pc_[0] != 0x82102065 /* mov NR_rt_sigreturn, %g1 */ \
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|| pc_[1] != 0x91d0206d) /* ta 0x6d */ \
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break; \
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regs_off_ = 192 + 128; \
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fpu_save_off_ = regs_off_ + (16 * 8) + (3 * 8) + (2 * 4); \
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this_cfa_ = (long) (CONTEXT)->cfa; \
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new_cfa_ = *(long *)(((CONTEXT)->cfa) + (regs_off_ + (14 * 8))); \
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new_cfa_ += 2047; /* Stack bias */ \
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fpu_save_ = *(long *)((this_cfa_) + (fpu_save_off_)); \
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(FS)->cfa_how = CFA_REG_OFFSET; \
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(FS)->cfa_reg = 14; \
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(FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \
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for (i_ = 1; i_ < 16; ++i_) \
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{ \
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(FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_].loc.offset = \
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this_cfa_ + (regs_off_ + (i_ * 8)) - new_cfa_; \
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} \
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for (i_ = 0; i_ < 16; ++i_) \
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{ \
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(FS)->regs.reg[i_ + 16].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_ + 16].loc.offset = \
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this_cfa_ + (i_ * 8) - new_cfa_; \
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} \
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if (fpu_save_) \
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{ \
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for (i_ = 0; i_ < 64; ++i_) \
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{ \
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if (i_ > 32 && (i_ & 0x1)) \
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continue; \
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(FS)->regs.reg[i_ + 32].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_ + 32].loc.offset = \
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(fpu_save_ + (i_ * 4)) - new_cfa_; \
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} \
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} \
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/* Stick return address into %g0, same trick Alpha uses. */ \
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(FS)->regs.reg[0].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[0].loc.offset = \
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this_cfa_ + (regs_off_ + (16 * 8) + 8) - new_cfa_; \
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(FS)->retaddr_column = 0; \
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goto SUCCESS; \
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} while (0)
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#else
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/* 32-bit SPARC version */
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#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
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do { \
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unsigned int *pc_ = (CONTEXT)->ra; \
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int new_cfa_, i_, oldstyle_; \
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int regs_off_, fpu_save_off_; \
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int fpu_save_, this_cfa_; \
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\
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if (pc_[1] != 0x91d02010) /* ta 0x10 */ \
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break; \
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if (pc_[0] == 0x821020d8) /* mov NR_sigreturn, %g1 */ \
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oldstyle_ = 1; \
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else if (pc_[0] == 0x82102065) /* mov NR_rt_sigreturn, %g1 */ \
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oldstyle_ = 0; \
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else \
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break; \
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if (oldstyle_) \
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{ \
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regs_off_ = 96; \
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fpu_save_off_ = regs_off_ + (4 * 4) + (16 * 4); \
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} \
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else \
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{ \
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regs_off_ = 96 + 128; \
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fpu_save_off_ = regs_off_ + (4 * 4) + (16 * 4) + (2 * 4); \
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} \
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this_cfa_ = (int) (CONTEXT)->cfa; \
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new_cfa_ = *(int *)(((CONTEXT)->cfa) + (regs_off_+(4*4)+(14 * 4))); \
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fpu_save_ = *(int *)((this_cfa_) + (fpu_save_off_)); \
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(FS)->cfa_how = CFA_REG_OFFSET; \
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(FS)->cfa_reg = 14; \
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(FS)->cfa_offset = new_cfa_ - (int) (CONTEXT)->cfa; \
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for (i_ = 1; i_ < 16; ++i_) \
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{ \
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if (i_ == 14) \
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continue; \
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(FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_].loc.offset = \
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this_cfa_ + (regs_off_+(4 * 4)+(i_ * 4)) - new_cfa_; \
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} \
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for (i_ = 0; i_ < 16; ++i_) \
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{ \
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(FS)->regs.reg[i_ + 16].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_ + 16].loc.offset = \
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this_cfa_ + (i_ * 4) - new_cfa_; \
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} \
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if (fpu_save_) \
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{ \
|
||
for (i_ = 0; i_ < 32; ++i_) \
|
||
{ \
|
||
(FS)->regs.reg[i_ + 32].how = REG_SAVED_OFFSET; \
|
||
(FS)->regs.reg[i_ + 32].loc.offset = \
|
||
(fpu_save_ + (i_ * 4)) - new_cfa_; \
|
||
} \
|
||
} \
|
||
/* Stick return address into %g0, same trick Alpha uses. */ \
|
||
(FS)->regs.reg[0].how = REG_SAVED_OFFSET; \
|
||
(FS)->regs.reg[0].loc.offset = this_cfa_+(regs_off_+4)-new_cfa_; \
|
||
(FS)->retaddr_column = 0; \
|
||
goto SUCCESS; \
|
||
} while (0)
|
||
#endif
|