Enable native stack walking for allocation profiling

runtime/vm/globals.h

 // Copyright (c) 2012, 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.
 
 #ifndef VM_GLOBALS_H_
 #define VM_GLOBALS_H_
 
 // This file contains global definitions for the VM library only. Anything that
 // is more globally useful should be added to 'vm/globals.h'.
 
@@ skipping 72 matching lines @@
 
 
 // Zap value used to indicate uninitialized handle area (debug purposes).
 #if defined(ARCH_IS_32_BIT)
 static const uword kZapUninitializedWord = 0xabababab;
 #else
 static const uword kZapUninitializedWord = 0xabababababababab;
 #endif
 
 
+// Macros to get the contents of the fp register.
+#if defined(TARGET_OS_WINDOWS)
+
+#if defined(HOST_ARCH_IA32)
+#define COPY_FP_REGISTER(fp) __asm { movl [fp], ebp };  // NOLINT
+#elif defined(HOST_ARCH_X64)
+#define COPY_FP_REGISTER(fp) __asm { movq [fp], rbp };  // NOLINT
+#else
+#error Unknown host architecture.
+#endif
+
+#else  // !defined(TARGET_OS_WINDOWS))
+
+// Assume GCC-like inline syntax is valid.
+#if defined(HOST_ARCH_IA32)
+#define COPY_FP_REGISTER(fp) asm volatile ("movl %%ebp, %0" : "=r" (fp) );
+#elif defined(HOST_ARCH_X64)
+#define COPY_FP_REGISTER(fp) asm volatile ("movq %%rbp, %0" : "=r" (fp) );
+#elif defined(HOST_ARCH_ARM)
+#define COPY_FP_REGISTER(fp) asm volatile ("mov %0, %%r11" : "=r" (fp) );
+#elif defined(HOST_ARCH_ARM64)
+#define COPY_FP_REGISTER(fp) asm volatile ("mov %0, %%x29" : "=r" (fp) );
+#elif defined(HOST_ARCH_MIPS)
+#define COPY_FP_REGISTER(fp) asm volatile ("move %0, %%r30" : "=r" (fp) );
+#else
+#error Unknown host architecture.
+#endif
+
+
+#endif  // !defined(TARGET_OS_WINDOWS))
+
 }  // namespace dart
 
 #endif  // VM_GLOBALS_H_