diff options
Diffstat (limited to 'gcc-4.9/gcc/config/rs6000/linux.h')
| -rw-r--r-- | gcc-4.9/gcc/config/rs6000/linux.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/rs6000/linux.h b/gcc-4.9/gcc/config/rs6000/linux.h new file mode 100644 index 000000000..1f4579f33 --- /dev/null +++ b/gcc-4.9/gcc/config/rs6000/linux.h @@ -0,0 +1,153 @@ +/* Definitions of target machine for GNU compiler, + for PowerPC machines running Linux. + Copyright (C) 1996-2014 Free Software Foundation, Inc. + Contributed by Michael Meissner (meissner@cygnus.com). + + This file is part of GCC. + + GCC is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3, or (at your + option) any later version. + + GCC is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public + License for more details. + + You should have received a copy of the GNU General Public License + along with GCC; see the file COPYING3. If not see + <http://www.gnu.org/licenses/>. */ + +/* Linux doesn't support saving and restoring 64-bit regs in a 32-bit + process. */ +#define OS_MISSING_POWERPC64 1 + +/* We use glibc _mcount for profiling. */ +#define NO_PROFILE_COUNTERS 1 + +#ifdef SINGLE_LIBC +#define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC) +#define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC) +#define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC) +#else +#define OPTION_GLIBC (linux_libc == LIBC_GLIBC) +#define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC) +#define OPTION_BIONIC (linux_libc == LIBC_BIONIC) +#endif + +/* Determine what functions are present at the runtime; + this includes full c99 runtime and sincos. */ +#undef TARGET_LIBC_HAS_FUNCTION +#define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function + +#undef TARGET_OS_CPP_BUILTINS +#define TARGET_OS_CPP_BUILTINS() \ + do \ + { \ + builtin_define_std ("PPC"); \ + builtin_define_std ("powerpc"); \ + builtin_assert ("cpu=powerpc"); \ + builtin_assert ("machine=powerpc"); \ + TARGET_OS_SYSV_CPP_BUILTINS (); \ + } \ + while (0) + +#undef CPP_OS_DEFAULT_SPEC +#define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)" + +/* The GNU C++ standard library currently requires _GNU_SOURCE being + defined on glibc-based systems. This temporary hack accomplishes this, + it should go away as soon as libstdc++-v3 has a real fix. */ +#undef CPLUSPLUS_CPP_SPEC +#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" + +#undef LINK_SHLIB_SPEC +#define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}" + +#undef LIB_DEFAULT_SPEC +#define LIB_DEFAULT_SPEC "%(lib_linux)" + +#undef STARTFILE_DEFAULT_SPEC +#define STARTFILE_DEFAULT_SPEC "%(startfile_linux)" + +#undef ENDFILE_DEFAULT_SPEC +#define ENDFILE_DEFAULT_SPEC "%(endfile_linux)" + +#undef LINK_START_DEFAULT_SPEC +#define LINK_START_DEFAULT_SPEC "%(link_start_linux)" + +#undef LINK_OS_DEFAULT_SPEC +#define LINK_OS_DEFAULT_SPEC "%(link_os_linux)" + +#undef DEFAULT_ASM_ENDIAN +#if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN) +#define DEFAULT_ASM_ENDIAN " -mlittle" +#define LINK_OS_LINUX_EMUL ENDIAN_SELECT(" -m elf32ppclinux", \ + " -m elf32lppclinux", \ + " -m elf32lppclinux") +#else +#define DEFAULT_ASM_ENDIAN " -mbig" +#define LINK_OS_LINUX_EMUL ENDIAN_SELECT(" -m elf32ppclinux", \ + " -m elf32lppclinux", \ + " -m elf32ppclinux") +#endif + +#undef LINK_OS_LINUX_SPEC +#define LINK_OS_LINUX_SPEC LINK_OS_LINUX_EMUL " %{!shared: %{!static: \ + %{rdynamic:-export-dynamic} \ + -dynamic-linker " GNU_USER_DYNAMIC_LINKER "}}" + +#define LINK_GCC_C_SEQUENCE_SPEC \ + "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}" + +/* Use --as-needed -lgcc_s for eh support. */ +#ifdef HAVE_LD_AS_NEEDED +#define USE_LD_AS_NEEDED 1 +#endif + +/* Override rs6000.h definition. */ +#undef ASM_APP_ON +#define ASM_APP_ON "#APP\n" + +/* Override rs6000.h definition. */ +#undef ASM_APP_OFF +#define ASM_APP_OFF "#NO_APP\n" + +/* For backward compatibility, we must continue to use the AIX + structure return convention. */ +#undef DRAFT_V4_STRUCT_RET +#define DRAFT_V4_STRUCT_RET 1 + +/* We are 32-bit all the time, so optimize a little. */ +#undef TARGET_64BIT +#define TARGET_64BIT 0 + +/* We don't need to generate entries in .fixup, except when + -mrelocatable or -mrelocatable-lib is given. */ +#undef RELOCATABLE_NEEDS_FIXUP +#define RELOCATABLE_NEEDS_FIXUP \ + (rs6000_isa_flags & rs6000_isa_flags_explicit & OPTION_MASK_RELOCATABLE) + +#define TARGET_POSIX_IO + +#ifdef TARGET_LIBC_PROVIDES_SSP +/* ppc32 glibc provides __stack_chk_guard in -0x7008(2). */ +#define TARGET_THREAD_SSP_OFFSET -0x7008 +#endif + +#define POWERPC_LINUX + +/* ppc linux has 128-bit long double support in glibc 2.4 and later. */ +#ifdef TARGET_DEFAULT_LONG_DOUBLE_128 +#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128 +#endif + +/* Static stack checking is supported by means of probes. */ +#define STACK_CHECK_STATIC_BUILTIN 1 + +/* Software floating point support for exceptions and rounding modes + depends on the C library in use. */ +#undef TARGET_FLOAT_EXCEPTIONS_ROUNDING_SUPPORTED_P +#define TARGET_FLOAT_EXCEPTIONS_ROUNDING_SUPPORTED_P \ + rs6000_linux_float_exceptions_rounding_supported_p |