Mercurial > hg > CbC > CbC_gcc
diff gcc/config/linux.h @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
---|---|
date | Tue, 22 Mar 2011 17:18:12 +0900 |
parents | a06113de4d67 |
children | 04ced10e8804 |
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--- a/gcc/config/linux.h Tue May 25 18:58:51 2010 +0900 +++ b/gcc/config/linux.h Tue Mar 22 17:18:12 2011 +0900 @@ -1,6 +1,9 @@ -/* Definitions for Linux-based GNU systems with ELF format +/* Definitions for systems using the Linux kernel, with or without + MMU, using ELF at the compiler level but possibly FLT for final + linked executables and shared libraries in some no-MMU cases, and + possibly with a choice of libc implementations. Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2006, - 2007, 2009 Free Software Foundation, Inc. + 2007, 2009, 2010, 2011 Free Software Foundation, Inc. Contributed by Eric Youngdale. Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org). @@ -25,62 +28,21 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see <http://www.gnu.org/licenses/>. */ -/* Don't assume anything about the header files. */ -#define NO_IMPLICIT_EXTERN_C - -#undef ASM_APP_ON -#define ASM_APP_ON "#APP\n" - -#undef ASM_APP_OFF -#define ASM_APP_OFF "#NO_APP\n" - -#undef MD_EXEC_PREFIX -#undef MD_STARTFILE_PREFIX - -/* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add - the GNU/Linux magical crtbegin.o file (see crtstuff.c) which - provides part of the support for getting C++ file-scope static - object constructed before entering `main'. */ - -#undef STARTFILE_SPEC -#if defined HAVE_LD_PIE -#define STARTFILE_SPEC \ - "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \ - crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}" +/* C libraries supported on Linux. */ +#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 STARTFILE_SPEC \ - "%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \ - crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}" +#define OPTION_GLIBC (linux_libc == LIBC_GLIBC) +#define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC) +#define OPTION_BIONIC (linux_libc == LIBC_BIONIC) #endif -/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on - the GNU/Linux magical crtend.o file (see crtstuff.c) which - provides part of the support for getting C++ file-scope static - object constructed before entering `main', followed by a normal - GNU/Linux "finalizer" file, `crtn.o'. */ - -#undef ENDFILE_SPEC -#define ENDFILE_SPEC \ - "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s" - -/* This is for -profile to use -lc_p instead of -lc. */ -#ifndef CC1_SPEC -#define CC1_SPEC "%{profile:-p}" -#endif - -/* The GNU C++ standard library requires that these macros be defined. */ -#undef CPLUSPLUS_CPP_SPEC -#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" - -#undef LIB_SPEC -#define LIB_SPEC \ - "%{pthread:-lpthread} \ - %{shared:-lc} \ - %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}" - #define LINUX_TARGET_OS_CPP_BUILTINS() \ do { \ - builtin_define ("__gnu_linux__"); \ + if (OPTION_GLIBC) \ + builtin_define ("__gnu_linux__"); \ builtin_define_std ("linux"); \ builtin_define_std ("unix"); \ builtin_assert ("system=linux"); \ @@ -88,30 +50,25 @@ builtin_assert ("system=posix"); \ } while (0) -#if defined(HAVE_LD_EH_FRAME_HDR) -#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} " -#endif +/* Determine which dynamic linker to use depending on whether GLIBC or + uClibc or Bionic is the default C library and whether + -muclibc or -mglibc or -mbionic has been passed to change the default. */ -/* Define this so we can compile MS code for use with WINE. */ -#define HANDLE_PRAGMA_PACK_PUSH_POP - -#undef LINK_GCC_C_SEQUENCE_SPEC -#define LINK_GCC_C_SEQUENCE_SPEC \ - "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}" +#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \ + "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}" -/* Use --as-needed -lgcc_s for eh support. */ -#ifdef HAVE_LD_AS_NEEDED -#define USE_LD_AS_NEEDED 1 -#endif - -/* Determine which dynamic linker to use depending on whether GLIBC or - uClibc is the default C library and whether -muclibc or -mglibc has - been passed to change the default. */ -#if UCLIBC_DEFAULT -#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}" +#if DEFAULT_LIBC == LIBC_GLIBC +#define CHOOSE_DYNAMIC_LINKER(G, U, B) \ + CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B) +#elif DEFAULT_LIBC == LIBC_UCLIBC +#define CHOOSE_DYNAMIC_LINKER(G, U, B) \ + CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B) +#elif DEFAULT_LIBC == LIBC_BIONIC +#define CHOOSE_DYNAMIC_LINKER(G, U, B) \ + CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U) #else -#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}" -#endif +#error "Unsupported DEFAULT_LIBC" +#endif /* DEFAULT_LIBC */ /* For most targets the following definitions suffice; GLIBC_DYNAMIC_LINKER must be defined for each target using them, or @@ -120,18 +77,23 @@ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0" #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0" #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0" -#define LINUX_DYNAMIC_LINKER \ - CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER) -#define LINUX_DYNAMIC_LINKER32 \ - CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32) -#define LINUX_DYNAMIC_LINKER64 \ - CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64) +#define BIONIC_DYNAMIC_LINKER "/system/bin/linker" +#define BIONIC_DYNAMIC_LINKER32 "/system/bin/linker" +#define BIONIC_DYNAMIC_LINKER64 "/system/bin/linker64" + +#define LINUX_DYNAMIC_LINKER \ + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \ + BIONIC_DYNAMIC_LINKER) +#define LINUX_DYNAMIC_LINKER32 \ + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \ + BIONIC_DYNAMIC_LINKER32) +#define LINUX_DYNAMIC_LINKER64 \ + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \ + BIONIC_DYNAMIC_LINKER64) /* Determine whether the entire c99 runtime is present in the runtime library. */ #define TARGET_C99_FUNCTIONS (OPTION_GLIBC) /* Whether we have sincos that follows the GNU extension. */ -#define TARGET_HAS_SINCOS (OPTION_GLIBC) - -#define TARGET_POSIX_IO +#define TARGET_HAS_SINCOS (OPTION_GLIBC || OPTION_BIONIC)