| /* Definitions of target machine for GNU compiler, |
| for PowerPC machines running Linux. |
| Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
| 2004, 2005, 2006 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 2, 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 COPYING. If not, write to the |
| Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, |
| MA 02110-1301, USA. */ |
| |
| #undef MD_EXEC_PREFIX |
| #undef MD_STARTFILE_PREFIX |
| |
| /* 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 |
| |
| /* glibc has float and long double forms of math functions. */ |
| #undef TARGET_C99_FUNCTIONS |
| #define TARGET_C99_FUNCTIONS (OPTION_GLIBC) |
| |
| #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)" |
| |
| #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 |
| |
| #undef TARGET_VERSION |
| #define TARGET_VERSION fprintf (stderr, " (PowerPC GNU/Linux)"); |
| |
| /* 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 \ |
| (target_flags & target_flags_explicit & MASK_RELOCATABLE) |
| |
| #define TARGET_ASM_FILE_END file_end_indicate_exec_stack |
| |
| #define TARGET_POSIX_IO |
| |
| #define MD_UNWIND_SUPPORT "config/rs6000/linux-unwind.h" |
| |
| #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 |