Fix issue 1968, replace usage of inline 'asm' constructs in 'stack alignment', 'jump to exception h…

vm/stub_code_ia32.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/assembler.h"
 #include "vm/assembler_macros.h"
 #include "vm/code_generator.h"
@@ skipping 1888 matching lines @@
 // Used to check class and type arguments. Arguments passed on stack:
 // TOS + 0: return address.
 // TOS + 1: instantiator type arguments.
 // TOS + 2: instance.
 // TOS + 3: cache array.
 // Result in ECX: null -> not found, otherwise result (true or false).
 void StubCode::GenerateSubtype3TestCacheStub(Assembler* assembler) {
   GenerateSubtypeNTestCacheStub(assembler, 3);
 }
 
+
+// Return the current stack pointer address, used to stack alignment
+// checks.
+// TOS + 0: return address
+// Result in EAX.
+void StubCode::GenerateGetStackPointerStub(Assembler* assembler) {
+  __ leal(EAX, Address(ESP, kWordSize));
+  __ ret();
+}
+
+
+// Jump to the exception handler.
+// TOS + 0: return address
+// TOS + 1: program_counter
+// TOS + 2: stack_pointer
+// TOS + 3: frame_pointer
+// TOS + 4: exception object
+// TOS + 5: stacktrace object
+// No Result.
+void StubCode::GenerateJumpToExceptionHandlerStub(Assembler* assembler) {
+  ASSERT(kExceptionObjectReg == EAX);
+  ASSERT(kStackTraceObjectReg == EDX);
+  __ movl(kStackTraceObjectReg, Address(ESP, 5 * kWordSize));
+  __ movl(kExceptionObjectReg, Address(ESP, 4 * kWordSize));
+  __ movl(EBP, Address(ESP, 3 * kWordSize));  // Load target frame_pointer.
+  __ movl(EBX, Address(ESP, 1 * kWordSize));  // Load target PC into EBX.
+  __ movl(ESP, Address(ESP, 2 * kWordSize));  // Load target stack_pointer.
+  __ jmp(EBX);  // Jump to the exception handler code.
+}
+
+
+// Jump to the error handler.
+// TOS + 0: return address
+// TOS + 1: program_counter
+// TOS + 2: stack_pointer
+// TOS + 3: frame_pointer
+// TOS + 4: error object
+// No Result.
+void StubCode::GenerateJumpToErrorHandlerStub(Assembler* assembler) {
+  __ movl(EAX, Address(ESP, 4 * kWordSize));  // Load error object.
+  __ movl(EBP, Address(ESP, 3 * kWordSize));  // Load target frame_pointer.
+  __ movl(EBX, Address(ESP, 1 * kWordSize));  // Load target PC into EBX.
+  __ movl(ESP, Address(ESP, 2 * kWordSize));  // Load target stack_pointer.
+  __ jmp(EBX);  // Jump to the exception handler code.
+}
+
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32