291 lines
9.3 KiB
C
291 lines
9.3 KiB
C
/* Definitions for 64-bit SPARC running Linux-based GNU systems with ELF.
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Copyright (C) 1996-2017 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 GCC.
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GCC 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 3, or (at your option)
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any later version.
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GCC 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 GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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GNU_USER_TARGET_OS_CPP_BUILTINS(); \
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if (TARGET_ARCH64) \
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builtin_define ("_LONGLONG"); \
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if (TARGET_ARCH32 \
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&& TARGET_LONG_DOUBLE_128) \
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builtin_define ("__LONG_DOUBLE_128__"); \
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} \
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while (0)
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/* On Linux, the combination sparc64-* --with-cpu=v8 is supported and
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selects a 32-bit compiler. */
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#if defined(TARGET_64BIT_DEFAULT) && TARGET_CPU_DEFAULT >= TARGET_CPU_v9
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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_STACK_BIAS + \
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MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
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#endif
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/* This must be v9a not just v9 because by default we enable
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-mvis. */
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#undef ASM_CPU64_DEFAULT_SPEC
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#define ASM_CPU64_DEFAULT_SPEC "-Av9a"
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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|pie:crtendS.o%s;:crtend.o%s} crtn.o%s\
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%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
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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 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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#undef CPP_SUBTARGET_SPEC
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#define CPP_SUBTARGET_SPEC "\
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%{posix:-D_POSIX_SOURCE} \
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%{pthread:-D_REENTRANT} \
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"
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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.
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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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#define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
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#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux.so.2"
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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 %{shared:-shared} \
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%{!shared: \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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-dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "} \
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%{static:-static}} \
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"
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#define LINK_ARCH64_SPEC "-m elf64_sparc %{shared:-shared} \
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%{!shared: \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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-dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "} \
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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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%{!mno-relax:%{!r:-relax}} \
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"
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/* -mcpu=native handling only makes sense with compiler running on
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a SPARC chip. */
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#if defined(__sparc__) && defined(__linux__)
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extern const char *host_detect_local_cpu (int argc, const char **argv);
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# define EXTRA_SPEC_FUNCTIONS \
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{ "local_cpu_detect", host_detect_local_cpu },
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# define MCPU_MTUNE_NATIVE_SPECS \
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" %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}" \
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" %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
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#else
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# define MCPU_MTUNE_NATIVE_SPECS ""
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#endif
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#define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS
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#undef CC1_SPEC
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#if DEFAULT_ARCH32_P
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#define CC1_SPEC "%{profile:-p} \
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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*:-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 "%{profile:-p} \
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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*:-mcpu=cypress}} \
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%{mv8plus:-mptr32 -mno-stack-bias %{!mlong-double-128:-mlong-double-64} \
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%{!mcpu*:-mcpu=v9}} \
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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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/* Support for a compile-time default CPU, et cetera. The rules are:
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--with-cpu is ignored if -mcpu is specified; likewise --with-cpu-32
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and --with-cpu-64.
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--with-tune is ignored if -mtune is specified; likewise --with-tune-32
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and --with-tune-64.
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--with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu
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are specified.
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In the SPARC_BI_ARCH compiler we cannot pass %{!mcpu=*:-mcpu=%(VALUE)}
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here, otherwise say -mcpu=v7 would be passed even when -m64.
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CC1_SPEC above takes care of this instead.
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Note that the order of the cpu* and tune* options matters: the
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config.gcc file always sets with_cpu to some value, even if the
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user didn't use --with-cpu when invoking the configure script.
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This value is based on the target name. Therefore we have to make
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sure that --with-cpu-32 takes precedence to --with-cpu in < v9
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systems, and that --with-cpu-64 takes precedence to --with-cpu in
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>= v9 systems. As for the tune* options, in some platforms
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config.gcc also sets a default value for it if the user didn't use
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--with-tune when invoking the configure script. */
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#undef OPTION_DEFAULT_SPECS
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#if DEFAULT_ARCH32_P
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#define OPTION_DEFAULT_SPECS \
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{"cpu_32", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
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{"cpu_64", "%{m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
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{"cpu", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
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{"tune_32", "%{!m64:%{!mtune=*:-mtune=%(VALUE)}}" }, \
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{"tune_64", "%{m64:%{!mtune=*:-mtune=%(VALUE)}}" }, \
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{"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \
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{"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" }
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#else
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#define OPTION_DEFAULT_SPECS \
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{"cpu_32", "%{m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
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{"cpu_64", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
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{"cpu", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
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{"tune_32", "%{m32:%{!mtune=*:-mtune=%(VALUE)}}" }, \
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{"tune_64", "%{!m32:%{!mtune=*:-mtune=%(VALUE)}}" }, \
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{"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \
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{"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" }
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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,%R/usr/lib64 %{shared:-shared} \
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%{!shared: \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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-dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "} \
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%{static:-static}} \
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%{!mno-relax:%{!r:-relax}} \
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"
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#endif /* !SPARC_BI_ARCH */
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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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-s \
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%{" FPIE_OR_FPIC_SPEC ":-K PIC} \
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%{!.c:%{findirect-dispatch:-K PIC}} \
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%(asm_cpu) %(asm_arch) %(asm_relax)"
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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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/* 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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#undef DITF_CONVERSION_LIBFUNCS
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#define DITF_CONVERSION_LIBFUNCS 1
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#ifdef HAVE_AS_TLS
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#undef TARGET_SUN_TLS
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#undef TARGET_GNU_TLS
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#define TARGET_SUN_TLS 0
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#define TARGET_GNU_TLS 1
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#endif
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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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/* Static stack checking is supported by means of probes. */
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#define STACK_CHECK_STATIC_BUILTIN 1
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#undef NEED_INDICATE_EXEC_STACK
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#define NEED_INDICATE_EXEC_STACK 1
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#ifdef TARGET_LIBC_PROVIDES_SSP
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/* sparc glibc provides __stack_chk_guard in [%g7 + 0x14],
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sparc64 glibc provides it at [%g7 + 0x28]. */
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#define TARGET_THREAD_SSP_OFFSET (TARGET_ARCH64 ? 0x28 : 0x14)
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#endif
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/* Define if long doubles should be mangled as 'g'. */
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#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
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/* We use glibc _mcount for profiling. */
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#undef NO_PROFILE_COUNTERS
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#define NO_PROFILE_COUNTERS 1
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