Support compilation for Android platform. Reimplement -mandroid.

	* config.gcc (*linux*): Include linux-android.h and linux-android.opt.
	(*android*): Set ANDROID_DEFAULT.
	(arm*-*-linux*): Include linux-android.h.
	(arm*-*-eabi*): Don't include previous -mandroid implementation.
	* config/arm/eabi.h: Remove, move Android-specific parts ...
	* config/linux-android.h: ... here.  New file.
	* config/arm/eabi.opt: Rename to ...
	* config/linux-android.opt: ... this.
	(mandroid): Allow -mno-android option.  Initialize based on
	ANDROID_DEFAULT.
	* config/linux.h (STARTFILE_SPEC, ENDFILE_SPEC, CC1_SPEC, LIB_SPEC):
	Move logic to corresponding LINUX_TARGET_* macros.
	(TARGET_OS_CPP_BUILTINS): Define __ANDROID__, when appropriate.
	* config/linux-eabi.h (LINK_SPEC, CC1_SPEC, CC1PLUS_SPEC, LIB_SPEC,)
	(STARTFILE_SPEC, ENDFILE_SPEC): Define to choose between Linux and
	Android definitions.
	(LINUX_TARGET_OS_CPP_BUILTINS): Define __ANDROID__ if TARGET_ANDROID.
	* doc/invoke.texi (-mandroid, -tno-android-cc, -tno-android-ld):
	Document.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@159918 138bc75d-0d04-0410-961f-82ee72b054a4

8 files changed, 163 insertions, 142 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4c4163e7e30..68fffda8e97 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,29 @@
 2010-05-27  Maxim Kuvyrkov  <maxim@codesourcery.com>
 
+	Support compilation for Android platform.  Reimplement -mandroid.
+
+	* config.gcc (*linux*): Include linux-android.h and linux-android.opt.
+	(*android*): Set ANDROID_DEFAULT.
+	(arm*-*-linux*): Include linux-android.h.
+	(arm*-*-eabi*): Don't include previous -mandroid implementation.
+	* config/arm/eabi.h: Remove, move Android-specific parts ...
+	* config/linux-android.h: ... here.  New file.
+	* config/arm/eabi.opt: Rename to ...
+	* config/linux-android.opt: ... this.
+	(mandroid): Allow -mno-android option.  Initialize based on
+	ANDROID_DEFAULT.
+	* config/linux.h (STARTFILE_SPEC, ENDFILE_SPEC, CC1_SPEC, LIB_SPEC):
+	Move logic to corresponding LINUX_TARGET_* macros.
+	(TARGET_OS_CPP_BUILTINS): Define __ANDROID__, when appropriate.
+	* config/linux-eabi.h (LINK_SPEC, CC1_SPEC, CC1PLUS_SPEC, LIB_SPEC,)
+	(STARTFILE_SPEC, ENDFILE_SPEC): Define to choose between Linux and
+	Android definitions.
+	(LINUX_TARGET_OS_CPP_BUILTINS): Define __ANDROID__ if TARGET_ANDROID.
+	* doc/invoke.texi (-mandroid, -tno-android-cc, -tno-android-ld):
+	Document.
+
+2010-05-27  Maxim Kuvyrkov  <maxim@codesourcery.com>
+
 	Add support for Bionic C library
 
 	* config.gcc (LIBC_GLIBC, LIBC_BIONIC, LIBC_UCLIBC): New tm_define
diff --git a/gcc/config.gcc b/gcc/config.gcc
index d3fcaca39ca..022997a0a4c 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -534,6 +534,22 @@ case ${target} in
   default_use_cxa_atexit=yes
   use_gcc_tgmath=no
   use_gcc_stdint=wrap
+  # Add Android userspace support to Linux targets.
+  case $target in
+    *linux*)
+      tm_file="$tm_file linux-android.h"
+      extra_options="$extra_options linux-android.opt"
+      ;;
+  esac
+  # Enable compilation for Android by default for *android* targets.
+  case $target in
+    *-*-*android*)
+      tm_defines="$tm_defines ANDROID_DEFAULT=1"
+      ;;
+    *)
+      tm_defines="$tm_defines ANDROID_DEFAULT=0"
+      ;;
+  esac
   ;;
 *-*-netbsd*)
   tmake_file="t-slibgcc-elf-ver t-libc-ok t-netbsd t-libgcc-pic"
@@ -717,7 +733,7 @@ arm*-*-netbsd*)
 	use_collect2=yes
 	;;
 arm*-*-linux*)			# ARM GNU/Linux with ELF
-	tm_file="dbxelf.h elfos.h linux.h glibc-stdint.h arm/elf.h arm/linux-gas.h arm/linux-elf.h"
+	tm_file="dbxelf.h elfos.h linux.h linux-android.h glibc-stdint.h arm/elf.h arm/linux-gas.h arm/linux-elf.h"
 	case $target in
 	arm*b-*)
 		tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
@@ -774,9 +790,8 @@ arm*-*-eabi* | arm*-*-symbianelf* )
 	tmake_file="arm/t-arm arm/t-arm-elf"
 	case ${target} in
 	arm*-*-eabi*)
-	  tm_file="$tm_file arm/eabi.h newlib-stdint.h"
+	  tm_file="$tm_file newlib-stdint.h"
 	  tmake_file="${tmake_file} arm/t-bpabi"
-	  extra_options="${extra_options} arm/eabi.opt"
 	  use_gcc_stdint=wrap
 	  ;;
 	arm*-*-symbianelf*)
diff --git a/gcc/config/arm/eabi.h b/gcc/config/arm/eabi.h
deleted file mode 100644
index c7d1d3ed20c..00000000000
--- a/gcc/config/arm/eabi.h
+++ /dev/null
@@ -1,125 +0,0 @@
-/* Configuration file for ARM EABI targets.
-   Copyright (C) 2008
-   Free Software Foundation, Inc.
-   Contributed by Doug Kwan (dougkwan@google.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/>.  */
-
-/* This file contains macro overrides for EABI targets.  */
-
-#undef TARGET_OS_CPP_BUILTINS
-#define TARGET_OS_CPP_BUILTINS()			\
-  do							\
-    {							\
-      TARGET_BPABI_CPP_BUILTINS ();			\
-      if (TARGET_ANDROID)				\
-	builtin_define ("__ANDROID__");			\
-    }							\
-  while (false)
-
-#undef SUBSUBTARGET_EXTRA_SPECS
-#define SUBSUBTARGET_EXTRA_SPECS \
-  { "link_android",		ANDROID_LINK_SPEC },		\
-  { "link_default",		BPABI_LINK_SPEC },		\
-  { "cc1_android",		ANDROID_CC1_SPEC },		\
-  { "cc1_default",		CC1_DEFAULT_SPEC },		\
-  { "cc1plus_android",		ANDROID_CC1PLUS_SPEC },		\
-  { "cc1plus_default",		CC1PLUS_DEFAULT_SPEC },		\
-  { "lib_android",		ANDROID_LIB_SPEC },		\
-  { "lib_default",		LIB_DEFAULT_SPEC },		\
-  { "startfile_android",	ANDROID_STARTFILE_SPEC },	\
-  { "startfile_default",	UNKNOWN_ELF_STARTFILE_SPEC },	\
-  { "endfile_android",		ANDROID_ENDFILE_SPEC },		\
-  { "endfile_default",		UNKNOWN_ELF_ENDFILE_SPEC },	\
-
-#undef ANDROID_LINK_SPEC
-#define ANDROID_LINK_SPEC \
-"%{mbig-endian:-EB} %{mlittle-endian:-EL} "		\
-"%{static:-Bstatic} %{shared:-shared} %{symbolic:-Bsymbolic} "	\
-"%{!static:" \
-   "%{shared: -Bsymbolic} " \
-   "%{!shared:" \
-      "%{rdynamic:-export-dynamic} " \
-      "%{!dynamic-linker:-dynamic-linker /system/bin/linker}}} " \
-"-X" SUBTARGET_EXTRA_LINK_SPEC
-
-/* Override LINK_SPEC in bpabi.h. */
-#undef LINK_SPEC
-#define LINK_SPEC \
-"%{mandroid: %(link_android) ;" \
-"          : %(link_default)}"
-
-/* Android uses -fno-exceptions by default. */
-#undef ANDROID_CC1_SPEC
-#define ANDROID_CC1_SPEC "%{!fexceptions:-fno-exceptions}"
-
-/* Default CC1_SPEC as in arm.h. */
-#undef CC1_DEFAULT_SPEC
-#define CC1_DEFAULT_SPEC ""
-
-#undef CC1_SPEC
-#define CC1_SPEC \
-"%{mandroid: %(cc1_android) ;" \
-"          : %(cc1_default)}"
-
-/* Android uses -fno-rtti by default. */
-#undef ANDROID_CC1PLUS_SPEC
-#define ANDROID_CC1PLUS_SPEC "%{!frtti:-fno-rtti}"
-
-/* Default CC1PLUS_SPEC as in gcc.c. */
-#undef CC1PLUS_DEFAULT_SPEC
-#define CC1PLUS_DEFAULT_SPEC ""
-
-#undef CC1PLUS_SPEC
-#define CC1PLUS_SPEC \
-"%{mandroid: %(cc1plus_android) ;" \
-"          : %(cc1plus_default)}"
-
-#undef ANDROID_LIB_SPEC
-#define ANDROID_LIB_SPEC	"-lc %{!static:-ldl}"
-
-/* Default LIB_SPEC as in gcc.c. */
-#undef LIB_DEFAULT_SPEC
-#define LIB_DEFAULT_SPEC \
-"%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
-
-#undef LIB_SPEC
-#define LIB_SPEC \
-"%{mandroid: %(lib_android) ;" \
-"          : %(lib_default)}"
-
-#undef ANDROID_STARTFILE_SPEC
-#define ANDROID_STARTFILE_SPEC \
-"%{!shared:" \
-   "%{static: crtbegin_static%O%s ;" \
-   "        : crtbegin_dynamic%O%s}}"
-
-/* Override STARTFILE_SPEC in unknown-elf.h. */
-#undef STARTFILE_SPEC
-#define STARTFILE_SPEC \
-"%{mandroid: %(startfile_android) ;" \
-"          : %(startfile_default)}"
-
-#undef ANDROID_ENDFILE_SPEC
-#define ANDROID_ENDFILE_SPEC	"%{!shared:crtend_android%O%s}"
-
-/* Override ENDFILE_SPEC in unknown-elf.h. */
-#undef ENDFILE_SPEC
-#define ENDFILE_SPEC \
-"%{mandroid: %(endfile_android) ;" \
-"          : %(endfile_default)}"
-
diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
index fce1ed165d3..e69035e590d 100644
--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
@@ -66,7 +66,30 @@
 /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
    use the GNU/Linux version, not the generic BPABI version.  */
 #undef  LINK_SPEC
-#define LINK_SPEC LINUX_TARGET_LINK_SPEC BE8_LINK_SPEC
+#define LINK_SPEC BE8_LINK_SPEC						\
+  LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC,				\
+		       LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
+
+#undef  CC1_SPEC
+#define CC1_SPEC						\
+  LINUX_OR_ANDROID_CC (LINUX_TARGET_CC1_SPEC,			\
+		       LINUX_TARGET_CC1_SPEC " " ANDROID_CC1_SPEC)
+
+#define CC1PLUS_SPEC \
+  LINUX_OR_ANDROID_CC ("", ANDROID_CC1PLUS_SPEC)
+
+#undef  LIB_SPEC
+#define LIB_SPEC						\
+  LINUX_OR_ANDROID_LD (LINUX_TARGET_LIB_SPEC,			\
+		       LINUX_TARGET_LIB_SPEC " " ANDROID_LIB_SPEC)
+
+#undef	STARTFILE_SPEC
+#define STARTFILE_SPEC \
+  LINUX_OR_ANDROID_LD (LINUX_TARGET_STARTFILE_SPEC, ANDROID_STARTFILE_SPEC)
+
+#undef	ENDFILE_SPEC
+#define ENDFILE_SPEC \
+  LINUX_OR_ANDROID_LD (LINUX_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
 
 /* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
    do not use -lfloat.  */
diff --git a/gcc/config/linux-android.h b/gcc/config/linux-android.h
new file mode 100644
index 00000000000..a43bab5b035
--- /dev/null
+++ b/gcc/config/linux-android.h
@@ -0,0 +1,54 @@
+/* Configuration file for Linux Android targets.
+   Copyright (C) 2008, 2010
+   Free Software Foundation, Inc.
+   Contributed by Doug Kwan (dougkwan@google.com)
+   Rewritten by CodeSourcery, Inc.
+
+   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/>.  */
+
+#if ANDROID_DEFAULT
+# define NOANDROID "mno-android"
+#else
+# define NOANDROID "!mandroid"
+#endif
+
+#define LINUX_OR_ANDROID_CC(LINUX_SPEC, ANDROID_SPEC) \
+  "%{" NOANDROID "|tno-android-cc:" LINUX_SPEC ";:" ANDROID_SPEC "}"
+
+#define LINUX_OR_ANDROID_LD(LINUX_SPEC, ANDROID_SPEC) \
+  "%{" NOANDROID "|tno-android-ld:" LINUX_SPEC ";:" ANDROID_SPEC "}"
+
+#define ANDROID_LINK_SPEC \
+  "%{shared: -Bsymbolic}"
+
+#define ANDROID_CC1_SPEC						\
+  "%{!mglibc:%{!muclibc:%{!mbionic: -mbionic}}} "			\
+  "%{!fno-pic:%{!fno-PIC:%{!fpic:%{!fPIC: -fPIC}}}}"
+
+#define ANDROID_CC1PLUS_SPEC						\
+  "%{!fexceptions:%{!fno-exceptions: -fno-exceptions}} "		\
+  "%{!frtti:%{!fno-rtti: -fno-rtti}}"
+
+#define ANDROID_LIB_SPEC \
+  "%{!static: -ldl}"
+
+#define ANDROID_STARTFILE_SPEC						\
+  "%{!shared:"								\
+  "  %{static: crtbegin_static%O%s;: crtbegin_dynamic%O%s}}"
+
+#define ANDROID_ENDFILE_SPEC \
+  "%{!shared: crtend_android%O%s}"
diff --git a/gcc/config/arm/eabi.opt b/gcc/config/linux-android.opt
index 2cda98d56d1..ad659caf0d1 100644
--- a/gcc/config/arm/eabi.opt
+++ b/gcc/config/linux-android.opt
@@ -1,6 +1,6 @@
-; EABI specific options for ARM port of the compiler.
+; Android specific options.
 
-; Copyright (C) 2008 Free Software Foundation, Inc.
+; Copyright (C) 2008, 2010 Free Software Foundation, Inc.
 ;
 ; This file is part of GCC.
 ;
@@ -19,5 +19,5 @@
 ; <http://www.gnu.org/licenses/>.
 
 mandroid
-Target Report RejectNegative Mask(ANDROID)
-Generate code for the Android operating system.
+Target Report Mask(ANDROID) Var(flag_android) Init(ANDROID_DEFAULT ? OPTION_MASK_ANDROID : 0)
+Generate code for the Android platform.
diff --git a/gcc/config/linux.h b/gcc/config/linux.h
index f86cc7bbaea..241e65668f0 100644
--- a/gcc/config/linux.h
+++ b/gcc/config/linux.h
@@ -42,16 +42,17 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    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 \
+#define LINUX_TARGET_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}"
 #else
-#define STARTFILE_SPEC \
+#define LINUX_TARGET_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}"
 #endif
+#undef  STARTFILE_SPEC
+#define STARTFILE_SPEC LINUX_TARGET_STARTFILE_SPEC
 
 /* Provide a ENDFILE_SPEC appropriate for GNU/Linux.  Here we tack on
    the GNU/Linux magical crtend.o file (see crtstuff.c) which
@@ -59,24 +60,27 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    object constructed before entering `main', followed by a normal
    GNU/Linux "finalizer" file, `crtn.o'.  */
 
-#undef	ENDFILE_SPEC
-#define ENDFILE_SPEC \
+#define LINUX_TARGET_ENDFILE_SPEC \
   "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
+#undef  ENDFILE_SPEC
+#define ENDFILE_SPEC LINUX_TARGET_ENDFILE_SPEC
 
 /* This is for -profile to use -lc_p instead of -lc.  */
+#define LINUX_TARGET_CC1_SPEC "%{profile:-p}"
 #ifndef CC1_SPEC
-#define CC1_SPEC "%{profile:-p}"
+#define CC1_SPEC LINUX_TARGET_CC1_SPEC
 #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 \
+#define LINUX_TARGET_LIB_SPEC \
   "%{pthread:-lpthread} \
    %{shared:-lc} \
    %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"
+#undef  LIB_SPEC
+#define LIB_SPEC LINUX_TARGET_LIB_SPEC
 
 /* C libraries supported on Linux.  */
 #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
@@ -92,6 +96,8 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 	builtin_assert ("system=linux");			\
 	builtin_assert ("system=unix");				\
 	builtin_assert ("system=posix");			\
+	if (OPTION_ANDROID)					\
+	  builtin_define ("__ANDROID__");			\
     } while (0)
 
 #if defined(HAVE_LD_EH_FRAME_HDR)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 20fa3477210..baa8e88f348 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -559,7 +559,8 @@ Objective-C and Objective-C++ Dialects}.
 -mcpu=@var{cpu}}
 
 @emph{GNU/Linux Options}
-@gccoptlist{-muclibc}
+@gccoptlist{-mglibc -muclibc -mbionic -mandroid @gol
+-tno-android-cc -tno-android-ld}
 
 @emph{H8/300 Options}
 @gccoptlist{-mrelax  -mh  -ms  -mn  -mint32  -malign-300}
@@ -11489,6 +11490,29 @@ Use uClibc C library.  This is the default on
 @opindex mbionic
 Use Bionic C library.  This is the default on
 @samp{*-*-linux-*android*} targets.
+
+@item -mandroid
+@opindex mandroid
+Compile code compatible with Android platform.  This is the default on
+@samp{*-*-linux-*android*} targets.
+
+When compiling, this option enables @option{-mbionic}, @option{-fPIC},
+@option{-fno-exceptions} and @option{-fno-rtti} by default.  When linking,
+this option makes the GCC driver pass Android-specific options to the linker.
+Finally, this option causes the preprocessor macro @code{__ANDROID__}
+to be defined.
+
+@item -tno-android-cc
+@opindex tno-android-cc
+Disable compilation effects of @option{-mandroid}, i.e., do not enable
+@option{-mbionic}, @option{-fPIC}, @option{-fno-exceptions} and
+@option{-fno-rtti} by default.
+
+@item -tno-android-ld
+@opindex tno-android-ld
+Disable linking effects of @option{-mandroid}, i.e., pass standard Linux
+linking options to the linker.
+
 @end table
 
 @node H8/300 Options