From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/config/linux.h | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 gcc/config/linux.h (limited to 'gcc/config/linux.h') diff --git a/gcc/config/linux.h b/gcc/config/linux.h new file mode 100644 index 000000000..00b4f1c1c --- /dev/null +++ b/gcc/config/linux.h @@ -0,0 +1,99 @@ +/* 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, 2010, 2011 Free Software Foundation, Inc. + Contributed by Eric Youngdale. + Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org). + +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. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +. */ + +/* 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 OPTION_GLIBC (linux_libc == LIBC_GLIBC) +#define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC) +#define OPTION_BIONIC (linux_libc == LIBC_BIONIC) +#endif + +#define LINUX_TARGET_OS_CPP_BUILTINS() \ + do { \ + if (OPTION_GLIBC) \ + builtin_define ("__gnu_linux__"); \ + builtin_define_std ("linux"); \ + builtin_define_std ("unix"); \ + builtin_assert ("system=linux"); \ + builtin_assert ("system=unix"); \ + builtin_assert ("system=posix"); \ + } while (0) + +/* 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 CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \ + "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}" + +#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 +#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 + GLIBC_DYNAMIC_LINKER32 and GLIBC_DYNAMIC_LINKER64 for targets + supporting both 32-bit and 64-bit compilation. */ +#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 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 || OPTION_BIONIC) -- cgit v1.2.3