AArch64: add support for ARM64 iOS versions of compiler-rt.

Just a dummy directory and a few sane choices in the Darwin SDK.

rdar://problem/18575597

llvm-svn: 219323

9 files changed, 67 insertions, 7 deletions

diff --git a/compiler-rt/SDKs/darwin/usr/include/stdio.h b/compiler-rt/SDKs/darwin/usr/include/stdio.h
index 629b45015dc..1a8781f2074 100644
--- a/compiler-rt/SDKs/darwin/usr/include/stdio.h
+++ b/compiler-rt/SDKs/darwin/usr/include/stdio.h
@@ -34,7 +34,7 @@ typedef __SIZE_TYPE__ size_t;
 #    define __FDOPEN_NAME  "_fdopen"
 #    define __FOPEN_NAME "_fopen"
 #    define __FWRITE_NAME "_fwrite"
-#  elif defined(__arm)
+#  elif defined(__arm) || defined(__arm64)
 #    define __FDOPEN_NAME  "_fdopen"
 #    define __FOPEN_NAME "_fopen"
 #    define __FWRITE_NAME "_fwrite"
@@ -46,7 +46,7 @@ typedef __SIZE_TYPE__ size_t;
 #    define __FDOPEN_NAME  "_fdopen"
 #    define __FOPEN_NAME "_fopen"
 #    define __FWRITE_NAME "_fwrite"
-#  elif defined(__arm)
+#  elif defined(__arm) || defined(__arm64)
 #    define __FDOPEN_NAME  "_fdopen"
 #    define __FOPEN_NAME "_fopen"
 #    define __FWRITE_NAME "_fwrite"
diff --git a/compiler-rt/SDKs/darwin/usr/include/string.h b/compiler-rt/SDKs/darwin/usr/include/string.h
index 1a00574cf2b..048fdba8f6d 100644
--- a/compiler-rt/SDKs/darwin/usr/include/string.h
+++ b/compiler-rt/SDKs/darwin/usr/include/string.h
@@ -32,13 +32,13 @@ char *strncpy(char *, const char *, size_t);
 #if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__)
 #  if defined(__i386)
 #    define __STRERROR_NAME  "_strerror$UNIX2003"
-#  elif defined(__x86_64__) || defined(__arm)
+#  elif defined(__x86_64__) || defined(__arm) || defined(__arm64)
 #    define __STRERROR_NAME  "_strerror"
 #  else
 #    error "unrecognized architecture for targeting OS X"
 #  endif
 #elif defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__)
-#  if defined(__i386) || defined (__x86_64) || defined(__arm)
+#  if defined(__i386) || defined (__x86_64) || defined(__arm) || defined(__arm64)
 #    define __STRERROR_NAME  "_strerror"
 #  else
 #    error "unrecognized architecture for targeting iOS"
diff --git a/compiler-rt/SDKs/darwin/usr/include/sys/fcntl.h b/compiler-rt/SDKs/darwin/usr/include/sys/fcntl.h
index e121949a416..96b24384aa6 100644
--- a/compiler-rt/SDKs/darwin/usr/include/sys/fcntl.h
+++ b/compiler-rt/SDKs/darwin/usr/include/sys/fcntl.h
@@ -23,7 +23,7 @@
 #    define __OPEN_NAME  "_open$UNIX2003"
 #  elif defined(__x86_64__)
 #    define __OPEN_NAME  "_open"
-#  elif defined(__arm)
+#  elif defined(__arm) || defined(__arm64)
 #    define __OPEN_NAME  "_open"
 #  else
 #    error "unrecognized architecture for targeting OS X"
@@ -31,7 +31,7 @@
 #elif defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__)
 #  if defined(__i386) || defined (__x86_64)
 #    define __OPEN_NAME  "_open"
-#  elif defined(__arm)
+#  elif defined(__arm) || defined(__arm64)
 #    define __OPEN_NAME  "_open"
 #  else
 #    error "unrecognized architecture for targeting iOS"
diff --git a/compiler-rt/lib/builtins/Makefile.mk b/compiler-rt/lib/builtins/Makefile.mk
index 4dbadd0bf20..00e2f53fc40 100644
--- a/compiler-rt/lib/builtins/Makefile.mk
+++ b/compiler-rt/lib/builtins/Makefile.mk
@@ -13,6 +13,9 @@ SubDirs :=
 # Add arch specific optimized implementations.
 SubDirs += i386 ppc x86_64 arm armv6m
 
+# Add ARM64 dir.
+SubDirs += arm64
+
 # Define the variables for this specific directory.
 Sources := $(foreach file,$(wildcard $(Dir)/*.c),$(notdir $(file)))
 ObjNames := $(Sources:%.c=%.o)
diff --git a/compiler-rt/lib/builtins/arm64/Makefile.mk b/compiler-rt/lib/builtins/arm64/Makefile.mk
new file mode 100644
index 00000000000..7f7e3866130
--- /dev/null
+++ b/compiler-rt/lib/builtins/arm64/Makefile.mk
@@ -0,0 +1,20 @@
+#===- lib/builtins/arm64/Makefile.mk -----------------------*- Makefile -*--===#
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+#===------------------------------------------------------------------------===#
+
+ModuleName := builtins
+SubDirs := 
+OnlyArchs := arm64 
+
+AsmSources := $(foreach file,$(wildcard $(Dir)/*.S),$(notdir $(file)))
+Sources := $(foreach file,$(wildcard $(Dir)/*.c),$(notdir $(file)))
+ObjNames := $(Sources:%.c=%.o) $(AsmSources:%.S=%.o)
+Implementation := Optimized
+
+# FIXME: use automatic dependencies?
+Dependencies := $(wildcard lib/*.h $(Dir)/*.h)
diff --git a/compiler-rt/lib/builtins/arm64/dummy.c b/compiler-rt/lib/builtins/arm64/dummy.c
new file mode 100644
index 00000000000..76bec30486f
--- /dev/null
+++ b/compiler-rt/lib/builtins/arm64/dummy.c
@@ -0,0 +1,13 @@
+/* ===---------- dummy.c - Implements dummy function, for bringup -----------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+static void dummy(void) __attribute__((used));
+
+static void dummy(void) {}
diff --git a/compiler-rt/lib/builtins/gcc_personality_v0.c b/compiler-rt/lib/builtins/gcc_personality_v0.c
index 91a77f44414..869f4178e85 100644
--- a/compiler-rt/lib/builtins/gcc_personality_v0.c
+++ b/compiler-rt/lib/builtins/gcc_personality_v0.c
@@ -180,7 +180,7 @@ static uintptr_t readEncodedPointer(const uint8_t** data, uint8_t encoding)
  * on each frame as the stack is unwound during a C++ exception
  * throw through a C function compiled with -fexceptions.
  */
-#if __arm__
+#if __USING_SJLJ_EXCEPTIONS__
 // the setjump-longjump based exceptions personality routine has a different name
 COMPILER_RT_ABI _Unwind_Reason_Code
 __gcc_personality_sj0(int version, _Unwind_Action actions,
diff --git a/compiler-rt/make/platform/clang_darwin.mk b/compiler-rt/make/platform/clang_darwin.mk
index 5a1b0cb062f..4d051e263c8 100644
--- a/compiler-rt/make/platform/clang_darwin.mk
+++ b/compiler-rt/make/platform/clang_darwin.mk
@@ -117,6 +117,13 @@ UniversalArchs.cc_kext_ios5 := $(filter-out armv7, $(UniversalArchs.cc_kext_ios5
 UniversalArchs.profile_ios := $(filter-out armv7, $(UniversalArchs.profile_ios))
 endif
 
+### ARM64 Support ###
+# Explicitly add these, to workaround CheckArches function not including the
+# CFLAGS, and not wanting to require an ARM64 assembler be installed.
+UniversalArchs.ios += arm64
+UniversalArchs.cc_kext += arm64
+UniversalArchs.profile_ios += arm64
+
 # If RC_SUPPORTED_ARCHS is defined, treat it as a list of the architectures we
 # are intended to support and limit what we try to build to that.
 #
@@ -176,6 +183,7 @@ CFLAGS.ios.x86_64h	:= $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS)
 CFLAGS.ios.armv7	:= $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
 CFLAGS.ios.armv7k	:= $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
 CFLAGS.ios.armv7s	:= $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
+CFLAGS.ios.arm64	:= $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
 CFLAGS.osx.i386		:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 CFLAGS.osx.x86_64	:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 CFLAGS.osx.x86_64h	:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
@@ -185,6 +193,7 @@ CFLAGS.cc_kext.x86_64h	:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 CFLAGS.cc_kext.armv7	:= $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
 CFLAGS.cc_kext.armv7k	:= $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
 CFLAGS.cc_kext.armv7s	:= $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
+CFLAGS.cc_kext.arm64	:= $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
 CFLAGS.cc_kext_ios5.armv7  := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
 CFLAGS.cc_kext_ios5.armv7k := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
 CFLAGS.cc_kext_ios5.armv7s := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
@@ -197,6 +206,7 @@ CFLAGS.profile_ios.x86_64h := $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS)
 CFLAGS.profile_ios.armv7  := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
 CFLAGS.profile_ios.armv7k := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
 CFLAGS.profile_ios.armv7s := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
+CFLAGS.profile_ios.arm64  := $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
 
 # Configure the asan_osx_dynamic library to be built shared.
 SHARED_LIBRARY.asan_osx_dynamic := 1
@@ -219,6 +229,7 @@ FUNCTIONS.ios.i386    := $(FUNCTIONS.ios) \
                          divsi3 udivsi3
 FUNCTIONS.ios.x86_64  := $(FUNCTIONS.ios.i386)
 FUNCTIONS.ios.x86_64h := $(FUNCTIONS.ios.x86_64)
+FUNCTIONS.ios.arm64   := dummy
 
 FUNCTIONS.osx	:= mulosi4 mulodi4 muloti4
 
@@ -388,6 +399,7 @@ CCKEXT_ARMVFP_FUNCTIONS := $(CCKEXT_ARM_FUNCTIONS) \
 FUNCTIONS.cc_kext.armv7 := $(CCKEXT_ARMVFP_FUNCTIONS)
 FUNCTIONS.cc_kext.armv7k := $(CCKEXT_ARMVFP_FUNCTIONS)
 FUNCTIONS.cc_kext.armv7s := $(CCKEXT_ARMVFP_FUNCTIONS)
+FUNCTIONS.cc_kext.arm64 := dummy
 FUNCTIONS.cc_kext_ios5.armv7 := $(CCKEXT_ARMVFP_FUNCTIONS)
 FUNCTIONS.cc_kext_ios5.armv7k := $(CCKEXT_ARMVFP_FUNCTIONS)
 FUNCTIONS.cc_kext_ios5.armv7s := $(CCKEXT_ARMVFP_FUNCTIONS)
@@ -473,6 +485,8 @@ FUNCTIONS.cc_kext.armv7k := \
 	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.armv7k))
 FUNCTIONS.cc_kext.armv7s := \
 	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.armv7s))
+FUNCTIONS.cc_kext.arm64 := \
+	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.arm64))
 FUNCTIONS.cc_kext_ios5.armv7 := \
 	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext_ios5.armv7))
 FUNCTIONS.cc_kext_ios5.armv7k := \
diff --git a/compiler-rt/make/platform/darwin_bni.mk b/compiler-rt/make/platform/darwin_bni.mk
index 03e8d290cff..229609a185d 100644
--- a/compiler-rt/make/platform/darwin_bni.mk
+++ b/compiler-rt/make/platform/darwin_bni.mk
@@ -115,3 +115,13 @@ FUNCTIONS.armv7 := $(FUNCTIONS) \
 
 FUNCTIONS.armv7s := $(FUNCTIONS.armv7)
 
+FUNCTIONS.arm64 :=  divti3 modti3 \
+					udivmodti4 \
+					udivti3 umodti3 \
+					powisf2 powidf2 \
+					clzti2 \
+					fixdfti fixsfti \
+					fixunsdfti fixunssfti fixunssfti \
+					floattidf floattisf floatuntidf floatuntisf \
+					gcc_personality_v0 atomic
+