Control profiling/debugger support from build script.

The SCons build now has the options profilingsupport and debuggersupport for controlling the setting of the defines ENABLE_LOGGIGN_AND_PROFILING and ENABLE_DEBUGGER_SUPPORT. By default both are set to true.

The changes to the XCode project have not been tested.
Review URL: http://codereview.chromium.org/195061

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2875 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

SConstruct

@@ -96,13 +96,18 @@ ANDROID_LINKFLAGS = ['-nostdlib',
 
 LIBRARY_FLAGS = {
   'all': {
-    'CPPDEFINES':   ['ENABLE_LOGGING_AND_PROFILING'],
     'CPPPATH': [join(root_dir, 'src')],
     'regexp:native': {
         'CPPDEFINES': ['V8_NATIVE_REGEXP']
     },
     'mode:debug': {
       'CPPDEFINES': ['V8_ENABLE_CHECKS']
+    },
+    'profilingsupport:on': {
+      'CPPDEFINES':   ['ENABLE_LOGGING_AND_PROFILING'],
+    },
+    'debuggersupport:on': {
+      'CPPDEFINES':   ['ENABLE_DEBUGGER_SUPPORT'],
     }
   },
   'gcc': {
@@ -114,7 +119,6 @@ LIBRARY_FLAGS = {
       'CCFLAGS':      ['-g', '-O0'],
       'CPPDEFINES':   ['ENABLE_DISASSEMBLER', 'DEBUG'],
       'os:android': {
-        'CPPDEFINES': ['ENABLE_DEBUGGER_SUPPORT'],
         'CCFLAGS':    ['-mthumb']
       }
     },
@@ -123,7 +127,7 @@ LIBRARY_FLAGS = {
                        '-ffunction-sections'],
       'os:android': {
         'CCFLAGS':    ['-mthumb', '-Os'],
-        'CPPDEFINES': ['SK_RELEASE', 'NDEBUG', 'ENABLE_DEBUGGER_SUPPORT']
+        'CPPDEFINES': ['SK_RELEASE', 'NDEBUG']
       }
     },
     'os:linux': {
@@ -576,6 +580,16 @@ SIMPLE_OPTIONS = {
     'default': 'static',
     'help': 'the type of library to produce'
   },
+  'profilingsupport': {
+    'values': ['on', 'off'],
+    'default': 'on',
+    'help': 'enable profiling of JavaScript code'
+  },
+  'debuggersupport': {
+    'values': ['on', 'off'],
+    'default': 'on',
+    'help': 'enable debugging of JavaScript code'
+  },
   'soname': {
     'values': ['on', 'off'],
     'default': 'off',
@@ -794,6 +808,10 @@ def PostprocessOptions(options):
       # Print a warning if arch has explicitly been set
       print "Warning: forcing architecture to match simulator (%s)" % options['simulator']
     options['arch'] = options['simulator']
+  if (options['prof'] != 'off') and (options['profilingsupport'] == 'off'):
+    # Print a warning if profiling is enabled without profiling support
+    print "Warning: forcing profilingsupport on when prof is on"
+    options['profilingsupport'] = 'on'
 
 
 def ParseEnvOverrides(arg, imports):

src/ia32/macro-assembler-ia32.cc

@@ -1170,7 +1170,6 @@ void MacroAssembler::Abort(const char* msg) {
 }
 
 
-#ifdef ENABLE_DEBUGGER_SUPPORT
 CodePatcher::CodePatcher(byte* address, int size)
     : address_(address), size_(size), masm_(address, size + Assembler::kGap) {
   // Create a new macro assembler pointing to the address of the code to patch.
@@ -1188,7 +1187,6 @@ CodePatcher::~CodePatcher() {
   ASSERT(masm_.pc_ == address_ + size_);
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
-#endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 } }  // namespace v8::internal

src/ia32/macro-assembler-ia32.h

@@ -338,7 +338,6 @@ class MacroAssembler: public Assembler {
 };
 
 
-#ifdef ENABLE_DEBUGGER_SUPPORT
 // The code patcher is used to patch (typically) small parts of code e.g. for
 // debugging and other types of instrumentation. When using the code patcher
 // the exact number of bytes specified must be emitted. Is not legal to emit
@@ -357,7 +356,6 @@ class CodePatcher {
   int size_;  // Number of bytes of the expected patch size.
   MacroAssembler masm_;  // Macro assembler used to generate the code.
 };
-#endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 // -----------------------------------------------------------------------------

src/v8.h

@@ -51,11 +51,6 @@
 #error both DEBUG and NDEBUG are set
 #endif
 
-// Enable debugger support by default, unless it is in ANDROID
-#if !defined(ENABLE_DEBUGGER_SUPPORT) && !defined(ANDROID)
-#define ENABLE_DEBUGGER_SUPPORT
-#endif
-
 // Basic includes
 #include "../include/v8.h"
 #include "globals.h"

src/x64/cfg-x64.cc

@@ -112,12 +112,14 @@ void ExitNode::Compile(MacroAssembler* masm) {
   __ pop(rbp);
   int count = CfgGlobals::current()->fun()->scope()->num_parameters();
   __ ret((count + 1) * kPointerSize);
+#ifdef ENABLE_DEBUGGER_SUPPORT
   // Add padding that will be overwritten by a debugger breakpoint.
   // "movq rsp, rbp; pop rbp" has length 4.  "ret k" has length 3.
   const int kPadding = Debug::kX64JSReturnSequenceLength - 4 - 3;
   for (int i = 0; i < kPadding; ++i) {
     __ int3();
   }
+#endif
 }
 
 

src/x64/codegen-x64.cc

@@ -509,6 +509,7 @@ void CodeGenerator::GenerateReturnSequence(Result* return_value) {
   // receiver.
   frame_->Exit();
   masm_->ret((scope_->num_parameters() + 1) * kPointerSize);
+#ifdef ENABLE_DEBUGGER_SUPPORT
   // Add padding that will be overwritten by a debugger breakpoint.
   // frame_->Exit() generates "movq rsp, rbp; pop rbp; ret k"
   // with length 7 (3 + 1 + 3).
@@ -516,12 +517,13 @@ void CodeGenerator::GenerateReturnSequence(Result* return_value) {
   for (int i = 0; i < kPadding; ++i) {
     masm_->int3();
   }
-  DeleteFrame();
-
   // Check that the size of the code used for returning matches what is
   // expected by the debugger.
   ASSERT_EQ(Debug::kX64JSReturnSequenceLength,
             masm_->SizeOfCodeGeneratedSince(&check_exit_codesize));
+#endif
+  DeleteFrame();
+
 }
 
 

src/x64/macro-assembler-x64.cc

@@ -2087,7 +2087,6 @@ void MacroAssembler::UndoAllocationInNewSpace(Register object) {
 }
 
 
-#ifdef ENABLE_DEBUGGER_SUPPORT
 CodePatcher::CodePatcher(byte* address, int size)
     : address_(address), size_(size), masm_(address, size + Assembler::kGap) {
   // Create a new macro assembler pointing to the address of the code to patch.
@@ -2105,7 +2104,6 @@ CodePatcher::~CodePatcher() {
   ASSERT(masm_.pc_ == address_ + size_);
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
-#endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 } }  // namespace v8::internal

src/x64/macro-assembler-x64.h

@@ -589,7 +589,6 @@ class MacroAssembler: public Assembler {
 };
 
 
-#ifdef ENABLE_DEBUGGER_SUPPORT
 // The code patcher is used to patch (typically) small parts of code e.g. for
 // debugging and other types of instrumentation. When using the code patcher
 // the exact number of bytes specified must be emitted. Is not legal to emit
@@ -608,7 +607,6 @@ class CodePatcher {
   int size_;  // Number of bytes of the expected patch size.
   MacroAssembler masm_;  // Macro assembler used to generate the code.
 };
-#endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 // -----------------------------------------------------------------------------

tools/v8.xcodeproj/project.pbxproj

@@ -1489,6 +1489,7 @@
 					V8_TARGET_ARCH_IA32,
 					V8_NATIVE_REGEXP,
 					ENABLE_LOGGING_AND_PROFILING,
+					ENABLE_DEBUGGER_SUPPORT,
 				);
 				HEADER_SEARCH_PATHS = ../src;
 				PRODUCT_NAME = v8;
@@ -1537,6 +1538,7 @@
 					V8_TARGET_ARCH_ARM,
 					ENABLE_DISASSEMBLER,
 					ENABLE_LOGGING_AND_PROFILING,
+					ENABLE_DEBUGGER_SUPPORT,
 				);
 				HEADER_SEARCH_PATHS = ../src;
 				PRODUCT_NAME = "v8-arm";

tools/visual_studio/common.vsprops

@@ -8,7 +8,7 @@
 	<Tool
 		Name="VCCLCompilerTool"
 		AdditionalIncludeDirectories="$(ProjectDir)\..\..\src;$(IntDir)\DerivedSources"
-		PreprocessorDefinitions="WIN32;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;_HAS_EXCEPTIONS=0;ENABLE_LOGGING_AND_PROFILING"
+		PreprocessorDefinitions="WIN32;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;_HAS_EXCEPTIONS=0;ENABLE_LOGGING_AND_PROFILING;ENABLE_DEBUGGER_SUPPORT"
 		MinimalRebuild="false"
 		ExceptionHandling="0"
 		RuntimeTypeInfo="false"