23   uptr magic;  // Modified by the instrumented code.
24   uptr descr;  // Modified by the instrumented code.
25   uptr pc;     // Modified by the instrumented code.
26   uptr real_stack;
57   static const uptr kMinStackFrameSizeLog = 6;  // Min frame is 64B.
58   static const uptr kMaxStackFrameSizeLog = 16;  // Max stack frame is 64K.
61   static const uptr kNumberOfSizeClasses =
65   static FakeStack *Create(uptr stack_size_log);
70   static uptr SizeRequiredForFlags(uptr stack_size_log) {  in SizeRequiredForFlags()
71     return ((uptr)1) << (stack_size_log + 1 - kMinStackFrameSizeLog);  in SizeRequiredForFlags()
75   static uptr SizeRequiredForFrames(uptr stack_size_log) {  in SizeRequiredForFrames()
76     return (((uptr)1) << stack_size_log) * kNumberOfSizeClasses;  in SizeRequiredForFrames()
80   static uptr RequiredSize(uptr stack_size_log) {  in RequiredSize()
91   static uptr FlagsOffset(uptr stack_size_log, uptr class_id) {  in FlagsOffset()
92     uptr t = kNumberOfSizeClasses - 1 - class_id;  in FlagsOffset()
93     const uptr all_ones = (((uptr)1) << (kNumberOfSizeClasses - 1)) - 1;  in FlagsOffset()
97   static uptr NumberOfFrames(uptr stack_size_log, uptr class_id) {  in NumberOfFrames()
98     return ((uptr)1) << (stack_size_log - kMinStackFrameSizeLog - class_id);  in NumberOfFrames()
102   static uptr ModuloNumberOfFrames(uptr stack_size_log, uptr class_id, uptr n) {  in ModuloNumberOfFrames()
107   u8 *GetFlags(uptr stack_size_log, uptr class_id) {  in GetFlags()
113   u8 *GetFrame(uptr stack_size_log, uptr class_id, uptr pos) {  in GetFrame()
116            (((uptr)1) << stack_size_log) * class_id +  in GetFrame()
121   FakeFrame *Allocate(uptr stack_size_log, uptr class_id, uptr real_stack);
124   static void Deallocate(uptr x, uptr class_id) {  in Deallocate()
132   uptr AddrIsInFakeStack(uptr addr, uptr *frame_beg, uptr *frame_end);
133   USED uptr AddrIsInFakeStack(uptr addr) {  in AddrIsInFakeStack()
134     uptr t1, t2;  in AddrIsInFakeStack()
139   static uptr BytesInSizeClass(uptr class_id) {  in BytesInSizeClass()
140     return ((uptr)1) << (class_id + kMinStackFrameSizeLog);  in BytesInSizeClass()
146   static u8 **SavedFlagPtr(uptr x, uptr class_id) {  in SavedFlagPtr()
150   uptr stack_size_log() const { return stack_size_log_; }  in stack_size_log()
153   void GC(uptr real_stack);
159   static const uptr kFlagsOffset = 4096;  // This is were the flags begin.
162   static const uptr kMaxStackMallocSize = ((uptr)1) << kMaxStackFrameSizeLog;
164   uptr hint_position_[kNumberOfSizeClasses];
165   uptr stack_size_log_;