Initial Subzero WASM prototype.

Makefile.standalone

 # The following variables will likely need to be modified, depending on where
 # and how you built LLVM & Clang. They can be overridden in a command-line
 # invocation of make, like:
 #
 #   make LLVM_SRC_PATH=<path> LIBCXX_INSTALL_PATH=<path> CLANG_PATH=<path> \
 #        PNACL_BIN_PATH=<path> ...
 #
 
 # LLVM_SRC_PATH is the path to the root of the checked out source code. This
 # directory should contain the configure script, the include/ and lib/
@@ skipping 161 matching lines @@
 
 ifdef LINUX_MALLOC_PROFILE
   OBJDIR := $(OBJDIR)+MalProf
   CXX_EXTRA += -DALLOW_LINUX_MALLOC_PROFILE=1
   LD_EXTRA += -Wl,--export-dynamic
 endif
 
 SB_OBJDIR := $(OBJDIR)+Sandboxed
 SBB_OBJDIR := $(OBJDIR)+SandboxedBrowser
 
+V8_DIR = $(NACL_ROOT)/../v8
+V8_CXXFLAGS := -I$(V8_DIR)
+
 $(info -----------------------------------------------)
 $(info Using LLVM_SRC_PATH = $(LLVM_SRC_PATH))
 $(info Using SB_LLVM_PATH = $(SB_LLVM_PATH))
 $(info Using NACL_ROOT = $(NACL_ROOT))
 $(info Using TOOLCHAIN_ROOT = $(TOOLCHAIN_ROOT))
 $(info Using PNACL_TOOLCHAIN_ROOT = $(PNACL_TOOLCHAIN_ROOT))
 $(info Using PNACL_BIN_PATH = $(PNACL_BIN_PATH))
 $(info Using CLANG_PATH = $(CLANG_PATH))
 $(info Using LIBCXX_INSTALL_PATH = $(LIBCXX_INSTALL_PATH))
 $(info Using HOST_ARCH     = $(HOST_ARCH))
@@ skipping 52 matching lines @@
     -Wcast-qual \
     -Wno-comment \
     -Wno-long-long \
     -Wno-maybe-uninitialized \
     -Wno-missing-field-initializers \
     -Wno-unused-parameter \
     -Wwrite-strings
   OBJDIR := $(OBJDIR)+Gplusplus
 endif
 
-BASE_CXXFLAGS := -std=gnu++11 -Wall -Wextra -Werror -fno-rtti \
+BASE_CXXFLAGS := -std=gnu++11 -Wall -Wextra -fno-rtti \
   -fno-exceptions $(OPTLEVEL) $(ASSERTIONS) -g -pedantic \
   $(LLVM_EXTRA_WARNINGS) $(CXX_EXTRA) -MP -MD
 
+ifdef WASM
+  # The WASM code inherits a lot of V8 code, which does not compile with
+  # -Werror.
+  BASE_CXXFLAGS := $(BASE_CXXFLAGS) $(V8_CXXFLAGS) -DALLOW_WASM=1
+  OBJDIR := $(OBJDIR)+Wasm
+else
+  BASE_CXXFLAGS := $(BASE_CXXFLAGS) -Werror -DALLOW_WASM=0
+endif
+
 CXXFLAGS := $(LLVM_CXXFLAGS) $(BASE_CXXFLAGS) $(CXX_DEFINES) $(HOST_FLAGS) \
   $(STDLIB_FLAGS)
 SB_CXXFLAGS := $(SB_LLVM_CXXFLAGS) $(BASE_CXXFLAGS) $(BASE_CXX_DEFINES) \
                -Wno-unknown-pragmas -I$(NACL_ROOT) -I$(NACL_ROOT)/..
 
 LDFLAGS := $(HOST_FLAGS) -L$(LIBCXX_INSTALL_PATH)/lib -Wl,--gc-sections \
   $(LD_EXTRA) $(STDLIB_FLAGS)
 # Not specifying -Wl,--gc-sections but instead doing bitcode linking GC w/ LTO.
 SB_LDFLAGS := $(LINKOPTLEVEL) $(LD_EXTRA)
 
@@ skipping 40 matching lines @@
   LinuxMallocProfiling.cpp \
   main.cpp \
   PNaClTranslator.cpp
 
 ifndef MINIMAL
   SRCS += \
     IceConverter.cpp \
     IceTypeConverter.cpp
 endif
 
+ifdef WASM
+  SRCS += \
+    WasmTranslator.cpp
+endif
+
 OBJS=$(patsubst %.cpp, $(OBJDIR)/%.o, $(SRCS))
 SB_OBJS=$(patsubst %.cpp, $(SB_OBJDIR)/%.o, $(SRCS))
 SBB_OBJS=$(patsubst %.cpp, $(SBB_OBJDIR)/%.o, $(SRCS))
 
 UNITTEST_SRCS = \
   BitcodeMunge.cpp \
   IceELFSectionTest.cpp \
   IceParseInstsTest.cpp
 
 # The X86 assembler tests take too long to compile. Given how infrequently the
@@ skipping 57 matching lines @@
 
 %.pexe : %.nonfinal.pexe
         $(SB_FINALIZE) -o $@ $<
 
 .PHONY: all compile_only make_symlink runtime bloat sb docs help \
   help-check-lit help-check-xtest exists-nonsfi-x8632 \
   exists-nonsfi-arm32 exists-sbtc exists-spec
 
 compile_only: $(OBJS)
 
+V8_LIBDIR=$(V8_DIR)/out/native/lib.target
+
+ifdef WASM
+  V8_LIBS := \
+    $(V8_LIBDIR)/libv8.so \
+    $(V8_LIBDIR)/libicuuc.so \
+    $(V8_LIBDIR)/libicui18n.so
+endif
+
 $(OBJDIR)/pnacl-sz: $(OBJS)
         $(CXX) $(LDFLAGS) -o $@ $^ $(LLVM_LDFLAGS) \
-          -Wl,-rpath=$(abspath $(LIBCXX_INSTALL_PATH)/lib)
+          -Wl,-rpath=$(abspath $(LIBCXX_INSTALL_PATH)/lib) $(V8_LIBS)
 
 $(SB_OBJDIR)/pnacl-sz.nonfinal.pexe: $(SB_OBJS)
         $(SB_CXX) $(SB_LDFLAGS) -o $@ $^ $(SB_LLVM_LDFLAGS)
 
 $(SBB_OBJDIR)/pnacl-sz.nonfinal.pexe: $(SBB_OBJS)
         $(SB_CXX) $(SB_LDFLAGS) -o $@ $^ $(SB_LLVM_LDFLAGS) \
           --pnacl-disable-abi-check
 
 $(SB_OBJDIR)/pnacl-sz.x8632.nexe: $(SB_OBJDIR)/pnacl-sz.pexe
         $(SB_TRANSLATE) -arch x86-32 $^ -o $@
@@ skipping 298 matching lines @@
           TARGET=arm32 ALLSPEC='254.gap 176.gcc 181.mcf' check-spec
 # Provide validation of user awesomeness!
         echo Success
 
 FORMAT_BLACKLIST =
 # Add one of the following lines for each source file to ignore.
 FORMAT_BLACKLIST += ! -name IceParseInstsTest.cpp
 FORMAT_BLACKLIST += ! -name IceParseTypesTest.cpp
 FORMAT_BLACKLIST += ! -name assembler_arm.h
 FORMAT_BLACKLIST += ! -name assembler_arm.cc
+FORMAT_BLACKLIST += ! -path "./wasm-install/*"
 format:
         $(CLANG_FORMAT_PATH)/clang-format -style=LLVM -i \
           `find . -regex '.*\.\(c\|h\|cpp\)' $(FORMAT_BLACKLIST)`
 
 format-diff:
         git diff -U0 `git merge-base HEAD master` | \
           PATH=$(PNACL_BIN_PATH):$(PATH) \
           $(LLVM_SRC_PATH)/../clang/tools/clang-format/clang-format-diff.py \
           -p1 -style=LLVM -i
 
@@ skipping 19 matching lines @@
 
 help-check-xtest:
         @cat Makefile.standalone-help/check-xtest.txt
 
 clean:
         rm -rf pnacl-sz *.o $(foreach nexe,$(NEXES),$(notdir $(nexe))) \
           $(OBJDIR) $(SB_OBJDIR) $(SBB_OBJDIR) build/*.bloat.json
 
 clean-all: clean
         rm -rf build/ crosstest/Output/