X64: Fix bugs affecting Win64.

Increase stack space on Win64 sample and cctest executables.

Review URL: http://codereview.chromium.org/264047


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3056 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

.gitignore

@@ -10,6 +10,10 @@
 *.suo
 *.user
 *.xcodeproj
+*.idb
+*.pdb
+#*#
+*~
 d8
 d8_g
 shell

SConstruct

@@ -373,7 +373,8 @@ CCTEST_EXTRA_FLAGS = {
       'CPPDEFINES': ['V8_TARGET_ARCH_IA32']
     },
     'arch:x64': {
-      'CPPDEFINES':   ['V8_TARGET_ARCH_X64']
+      'CPPDEFINES':   ['V8_TARGET_ARCH_X64'],
+      'LINKFLAGS': ['/STACK:2091752']
     },
   }
 }
@@ -474,7 +475,7 @@ SAMPLE_FLAGS = {
     },
     'arch:x64': {
       'CPPDEFINES': ['V8_TARGET_ARCH_X64'],
-      'LINKFLAGS': ['/MACHINE:X64']
+      'LINKFLAGS': ['/MACHINE:X64', '/STACK:2091752']
     },
     'mode:debug': {
       'CCFLAGS':   ['/Od'],

src/execution.cc

@@ -386,7 +386,8 @@ void StackGuard::ThreadLocal::Initialize() {
   if (initial_climit_ == kIllegalLimit) {
     // Takes the address of the limit variable in order to find out where
     // the top of stack is right now.
-    intptr_t limit = reinterpret_cast<intptr_t>(&limit) - kLimitSize;
+    uintptr_t limit = reinterpret_cast<uintptr_t>(&limit) - kLimitSize;
+    ASSERT(reinterpret_cast<uintptr_t>(&limit) > kLimitSize);
     initial_jslimit_ = SimulatorStack::JsLimitFromCLimit(limit);
     jslimit_ = SimulatorStack::JsLimitFromCLimit(limit);
     initial_climit_ = limit;

src/execution.h

@@ -216,6 +216,7 @@ class StackGuard : public AllStatic {
   static void DisableInterrupts();
 
   static const uintptr_t kLimitSize = kPointerSize * 128 * KB;
+
 #ifdef V8_TARGET_ARCH_X64
   static const uintptr_t kInterruptLimit = V8_UINT64_C(0xfffffffffffffffe);
   static const uintptr_t kIllegalLimit = V8_UINT64_C(0xfffffffffffffff8);

src/platform-win32.cc

@@ -1794,7 +1794,6 @@ class Sampler::PlatformData : public Malloced {
         context.ContextFlags = CONTEXT_FULL;
         if (GetThreadContext(profiled_thread_, &context) != 0) {
 #if V8_HOST_ARCH_X64
-          UNIMPLEMENTED();
           sample.pc = context.Rip;
           sample.sp = context.Rsp;
           sample.fp = context.Rbp;

test/cctest/test-api.cc

@@ -728,7 +728,10 @@ THREADED_TEST(BigInteger) {
   LocalContext env;
   // We cannot add one to a Smi::kMaxValue without wrapping.
   if (i::kSmiValueSize < 32) {
-    int32_t value = i::Smi::kMaxValue + 1;
+    // The casts allow this to compile, even if Smi::kMaxValue is 2^31-1.
+    // The code will not be run in that case, due to the "if" guard.
+    int32_t value =
+        static_cast<int32_t>(static_cast<uint32_t>(i::Smi::kMaxValue) + 1);
     CHECK(value > i::Smi::kMaxValue);
     CHECK(!i::Smi::IsValid(value));
     Local<v8::Integer> value_obj = v8::Integer::New(value);

test/cctest/test-assembler-x64.cc

@@ -44,6 +44,7 @@ using v8::internal::Label;
 using v8::internal::rax;
 using v8::internal::rsi;
 using v8::internal::rdi;
+using v8::internal::rcx;
 using v8::internal::rdx;
 using v8::internal::rbp;
 using v8::internal::rsp;
@@ -53,20 +54,28 @@ using v8::internal::less_equal;
 using v8::internal::not_equal;
 using v8::internal::greater;
 
-
 // Test the x64 assembler by compiling some simple functions into
 // a buffer and executing them.  These tests do not initialize the
 // V8 library, create a context, or use any V8 objects.
-// The AMD64 calling convention is used, with the first five arguments
-// in RSI, RDI, RDX, RCX, R8, and R9, and floating point arguments in
+// The AMD64 calling convention is used, with the first six arguments
+// in RDI, RSI, RDX, RCX, R8, and R9, and floating point arguments in
 // the XMM registers.  The return value is in RAX.
 // This calling convention is used on Linux, with GCC, and on Mac OS,
-// with GCC.  A different convention is used on 64-bit windows.
+// with GCC.  A different convention is used on 64-bit windows,
+// where the first four integer arguments are passed in RCX, RDX, R8 and R9.
 
 typedef int (*F0)();
 typedef int (*F1)(int64_t x);
 typedef int (*F2)(int64_t x, int64_t y);
 
+#ifdef _WIN64
+static const v8::internal::Register arg1 = rcx;
+static const v8::internal::Register arg2 = rdx;
+#else
+static const v8::internal::Register arg1 = rdi;
+static const v8::internal::Register arg2 = rsi;
+#endif
+
 #define __ assm.
 
 
@@ -80,7 +89,7 @@ TEST(AssemblerX64ReturnOperation) {
   Assembler assm(buffer, actual_size);
 
   // Assemble a simple function that copies argument 2 and returns it.
-  __ movq(rax, rsi);
+  __ movq(rax, arg2);
   __ nop();
   __ ret(0);
 
@@ -105,9 +114,9 @@ TEST(AssemblerX64StackOperations) {
   // incorrect stack frames when debugging this function (which has them).
   __ push(rbp);
   __ movq(rbp, rsp);
-  __ push(rsi);  // Value at (rbp - 8)
-  __ push(rsi);  // Value at (rbp - 16)
-  __ push(rdi);  // Value at (rbp - 24)
+  __ push(arg2);  // Value at (rbp - 8)
+  __ push(arg2);  // Value at (rbp - 16)
+  __ push(arg1);  // Value at (rbp - 24)
   __ pop(rax);
   __ pop(rax);
   __ pop(rax);
@@ -132,8 +141,8 @@ TEST(AssemblerX64ArithmeticOperations) {
   Assembler assm(buffer, actual_size);
 
   // Assemble a simple function that adds arguments returning the sum.
-  __ movq(rax, rsi);
-  __ addq(rax, rdi);
+  __ movq(rax, arg2);
+  __ addq(rax, arg1);
   __ ret(0);
 
   CodeDesc desc;
@@ -154,8 +163,8 @@ TEST(AssemblerX64ImulOperation) {
 
   // Assemble a simple function that multiplies arguments returning the high
   // word.
-  __ movq(rax, rsi);
-  __ imul(rdi);
+  __ movq(rax, arg2);
+  __ imul(arg1);
   __ movq(rax, rdx);
   __ ret(0);
 
@@ -182,14 +191,16 @@ TEST(AssemblerX64MemoryOperands) {
   // Assemble a simple function that copies argument 2 and returns it.
   __ push(rbp);
   __ movq(rbp, rsp);
-  __ push(rsi);  // Value at (rbp - 8)
-  __ push(rsi);  // Value at (rbp - 16)
-  __ push(rdi);  // Value at (rbp - 24)
+
+  __ push(arg2);  // Value at (rbp - 8)
+  __ push(arg2);  // Value at (rbp - 16)
+  __ push(arg1);  // Value at (rbp - 24)
+
   const int kStackElementSize = 8;
   __ movq(rax, Operand(rbp, -3 * kStackElementSize));
-  __ pop(rsi);
-  __ pop(rsi);
-  __ pop(rsi);
+  __ pop(arg2);
+  __ pop(arg2);
+  __ pop(arg2);
   __ pop(rbp);
   __ nop();
   __ ret(0);
@@ -210,13 +221,14 @@ TEST(AssemblerX64ControlFlow) {
   CHECK(buffer);
   Assembler assm(buffer, actual_size);
 
-  // Assemble a simple function that copies argument 2 and returns it.
+  // Assemble a simple function that copies argument 1 and returns it.
   __ push(rbp);
+
   __ movq(rbp, rsp);
-  __ movq(rax, rdi);
+  __ movq(rax, arg1);
   Label target;
   __ jmp(&target);
-  __ movq(rax, rsi);
+  __ movq(rax, arg2);
   __ bind(&target);
   __ pop(rbp);
   __ ret(0);