Use the pnacl-clang toolchain for (P)NaCL builds

Patch from JF Bastien <jfb@google.com>.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/631703002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24402 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Makefile.nacl

@@ -36,41 +36,29 @@ NACL_BUILDS = $(foreach mode,$(MODES), \
                    $(addsuffix .$(mode),$(NACL_ARCHES)))
 
 HOST_OS = $(shell uname -s | sed -e 's/Linux/linux/;s/Darwin/mac/')
-ifeq ($(HOST_OS), linux)
-  TOOLCHAIN_DIR = linux_x86_glibc
-else
-  ifeq ($(HOST_OS), mac)
-    TOOLCHAIN_DIR = mac_x86_glibc
-  else
-    $(error Host platform "${HOST_OS}" is not supported)
-  endif
-endif
-
 TOOLCHAIN_PATH = $(realpath ${NACL_SDK_ROOT}/toolchain)
-NACL_TOOLCHAIN ?= ${TOOLCHAIN_PATH}/${TOOLCHAIN_DIR}
+NACL_TOOLCHAIN ?= ${TOOLCHAIN_PATH}/linux_pnacl
+
+ifeq ($(wildcard $(NACL_TOOLCHAIN)),)
+  $(error Cannot find Native Client toolchain in "${NACL_TOOLCHAIN}")
+endif
 
 ifeq ($(ARCH), nacl_ia32)
   GYPENV = nacl_target_arch=nacl_ia32 v8_target_arch=arm v8_host_arch=ia32
-  TOOLCHAIN_ARCH = x86-4.4
-  NACL_CC = "$(NACL_TOOLCHAIN)/bin/i686-nacl-gcc"
-  NACL_CXX = "$(NACL_TOOLCHAIN)/bin/i686-nacl-g++"
-  NACL_LINK = "$(NACL_TOOLCHAIN)/bin/i686-nacl-g++"
+  NACL_CC = "$(NACL_TOOLCHAIN)/bin/pnacl-clang"
+  NACL_CXX = "$(NACL_TOOLCHAIN)/bin/pnacl-clang++"
+  NACL_LINK = "$(NACL_TOOLCHAIN)/bin/pnacl-clang++ --pnacl-allow-native -arch x86-32"
 else
   ifeq ($(ARCH), nacl_x64)
     GYPENV = nacl_target_arch=nacl_x64 v8_target_arch=arm v8_host_arch=ia32
-    TOOLCHAIN_ARCH = x86-4.4
-    NACL_CC = "$(NACL_TOOLCHAIN)/bin/x86_64-nacl-gcc"
-    NACL_CXX = "$(NACL_TOOLCHAIN)/bin/x86_64-nacl-g++"
-    NACL_LINK = "$(NACL_TOOLCHAIN)/bin/x86_64-nacl-g++"
+    NACL_CC = "$(NACL_TOOLCHAIN)/bin/pnacl-clang"
+    NACL_CXX = "$(NACL_TOOLCHAIN)/bin/pnacl-clang++"
+    NACL_LINK = "$(NACL_TOOLCHAIN)/bin/pnacl-clang++ --pnacl-allow-native -arch x86-64"
   else
     $(error Target architecture "${ARCH}" is not supported)
   endif
 endif
 
-ifeq ($(wildcard $(NACL_TOOLCHAIN)),)
-  $(error Cannot find Native Client toolchain in "${NACL_TOOLCHAIN}")
-endif
-
 # For mksnapshot host generation.
 GYPENV += host_os=${HOST_OS}
 
@@ -85,7 +73,11 @@ NACL_MAKEFILES = $(addprefix $(OUTDIR)/Makefile.,$(NACL_BUILDS))
 # For some reason the $$(basename $$@) expansion didn't work here...
 $(NACL_BUILDS): $(NACL_MAKEFILES)
 	@$(MAKE) -C "$(OUTDIR)" -f Makefile.$@ \
+	            CC=${NACL_CC} \
 	            CXX=${NACL_CXX} \
+	            AR="$(NACL_TOOLCHAIN)/bin/pnacl-ar" \
+	            RANLIB="$(NACL_TOOLCHAIN)/bin/pnacl-ranlib" \
+	            LD="$(NACL_TOOLCHAIN)/bin/pnacl-ld" \
 	            LINK=${NACL_LINK} \
 	            BUILDTYPE=$(shell echo $(subst .,,$(suffix $@)) | \
 	                        python -c "print raw_input().capitalize()") \
@@ -97,6 +89,7 @@ $(NACL_MAKEFILES):
 	GYP_DEFINES="${GYPENV}" \
 	CC=${NACL_CC} \
 	CXX=${NACL_CXX} \
+	LINK=${NACL_LINK} \
 	PYTHONPATH="$(shell pwd)/tools/generate_shim_headers:$(shell pwd)/build:$(PYTHONPATH)" \
 	build/gyp/gyp --generator-output="${OUTDIR}" build/all.gyp \
 	              -Ibuild/standalone.gypi --depth=. \

src/base/atomicops.h

@@ -42,15 +42,17 @@ namespace base {
 
 typedef char Atomic8;
 typedef int32_t Atomic32;
-#ifdef V8_HOST_ARCH_64_BIT
+#if defined(__native_client__)
+typedef int64_t Atomic64;
+#elif defined(V8_HOST_ARCH_64_BIT)
 // We need to be able to go between Atomic64 and AtomicWord implicitly.  This
 // means Atomic64 and AtomicWord should be the same type on 64-bit.
 #if defined(__ILP32__)
 typedef int64_t Atomic64;
 #else
 typedef intptr_t Atomic64;
-#endif
-#endif
+#endif  // defined(V8_HOST_ARCH_64_BIT)
+#endif  // defined(__native_client__)
 
 // Use AtomicWord for a machine-sized pointer.  It will use the Atomic32 or
 // Atomic64 routines below, depending on your architecture.
@@ -140,6 +142,8 @@ Atomic64 Release_Load(volatile const Atomic64* ptr);
 #include "src/base/atomicops_internals_x86_msvc.h"
 #elif defined(__APPLE__)
 #include "src/base/atomicops_internals_mac.h"
+#elif defined(__native_client__)
+#include "src/base/atomicops_internals_portable.h"
 #elif defined(__GNUC__) && V8_HOST_ARCH_ARM64
 #include "src/base/atomicops_internals_arm64_gcc.h"
 #elif defined(__GNUC__) && V8_HOST_ARCH_ARM

src/base/build_config.h

@@ -29,6 +29,10 @@
 #define V8_HOST_ARCH_64_BIT 1
 #endif
 #endif  // __native_client__
+#elif defined(__pnacl__)
+// PNaCl is also ILP-32.
+#define V8_HOST_ARCH_IA32 1
+#define V8_HOST_ARCH_32_BIT 1
 #elif defined(_M_IX86) || defined(__i386__)
 #define V8_HOST_ARCH_IA32 1
 #define V8_HOST_ARCH_32_BIT 1

src/base/cpu.cc

@@ -29,7 +29,9 @@
 namespace v8 {
 namespace base {
 
-#if V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64
+#if defined(__pnacl__)
+// Portable host shouldn't do feature detection.
+#elif V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64
 
 // Define __cpuid() for non-MSVC libraries.
 #if !V8_LIBC_MSVCRT
@@ -290,7 +292,11 @@ CPU::CPU() : stepping_(0),
              has_vfp3_d32_(false),
              is_fp64_mode_(false) {
   memcpy(vendor_, "Unknown", 8);
-#if V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64
+#if defined(__pnacl__)
+// Portable host shouldn't do feature detection.
+// TODO(jfb): Remove the hardcoded ARM simulator flags in the build, and
+// hardcode them here instead.
+#elif V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64
   int cpu_info[4];
 
   // __cpuid with an InfoType argument of 0 returns the number of

tools/gyp/v8.gyp

@@ -1249,11 +1249,19 @@
           'toolsets': ['target'],
         }],
         ['OS=="linux"', {
-            'link_settings': {
-              'libraries': [
-                '-lrt'
-              ]
-            },
+            'conditions': [
+              ['nacl_target_arch=="none"', {
+                'link_settings': {
+                  'libraries': [
+                    '-lrt'
+                  ],
+                },
+              }, {
+                'defines': [
+                  'V8_LIBRT_NOT_AVAILABLE=1',
+                ],
+              }],
+            ],
             'sources': [
               '../../src/base/platform/platform-linux.cc',
               '../../src/base/platform/platform-posix.cc'

tools/nacl-run.py

@@ -32,6 +32,7 @@
 
 import os
 from os.path import join, dirname, abspath
+import re
 import subprocess
 import sys
 import tempfile
@@ -82,7 +83,7 @@ def GetNaClArchFromNexe(nexe):
   try:
     p = subprocess.Popen(['file', nexe], stdout=subprocess.PIPE)
     out, err = p.communicate()
-    lines = out.split('\n')
+    lines = [re.sub("\s+", " " , line) for line in out.split('\n')]
     if lines[0].find(": ELF 32-bit LSB executable, Intel 80386") > 0:
       return "x86_32"
     if lines[0].find(": ELF 64-bit LSB executable, x86-64") > 0:
@@ -116,17 +117,13 @@ def GetNaClResources(nexe):
     print("NaCl V8 ARM support is not ready yet.")
     sys.exit(1)
   else:
-    print("Invalid nexe %s" % nexe)
+    print("Invalid nexe %s with NaCl arch %s" % (nexe, nacl_arch))
     sys.exit(1)
 
   nacl_sel_ldr = os.path.join(nacl_sdk_dir, "tools", sel_ldr)
   nacl_irt = os.path.join(nacl_sdk_dir, "tools", irt)
-  nacl_ld_so = os.path.join(nacl_sdk_dir, "toolchain", toolchain,
-                            "x86_64-nacl", libdir, "runnable-ld.so")
-  nacl_lib_path = os.path.join(nacl_sdk_dir, "toolchain", toolchain,
-                               "x86_64-nacl", libdir)
 
-  return (nacl_sdk_dir, nacl_sel_ldr, nacl_irt, nacl_ld_so, nacl_lib_path)
+  return (nacl_sdk_dir, nacl_sel_ldr, nacl_irt)
 
 def Main():
   if (len(sys.argv) == 1):
@@ -135,15 +132,14 @@ def Main():
 
   args = [Escape(arg) for arg in sys.argv[1:]]
 
-  (nacl_sdk_dir, nacl_sel_ldr, nacl_irt, nacl_ld_so,
-   nacl_lib_path) = GetNaClResources(sys.argv[1])
+  (nacl_sdk_dir, nacl_sel_ldr, nacl_irt) = GetNaClResources(sys.argv[1])
 
   # sel_ldr Options:
   # -c -c: disable validation (for performance)
   # -a: allow file access
   # -B <irt>: load the IRT
-  command = ' '.join([nacl_sel_ldr, '-c', '-c', '-a', '-B', nacl_irt, '--',
-                     nacl_ld_so, '--library-path', nacl_lib_path] + args)
+  command = ' '.join([nacl_sel_ldr, '-c', '-c', '-a', '-B', nacl_irt, '--'] +
+                     args)
   error_code = Execute(command)
   return error_code