Frame layout change
This CL slightly changes the frame layout to remove an old unnecessary
slot, allow for the inclusion of compiler-generated temps and
unifies all variable offset calculation into a single function shared
by the compilers and the runtime system.
o Update the GetVRegOffset function in stack.cc to understand the
new layout.
o Remove compiler-private offset calculation code and route
everything through the shared GetVRegOffset in thread.cc.
o Remove "filler word" that existed immediately after the last
Dalvik local. This was there to address an initial concern that
I had about a single argument register being reused later as a
long. Now convinced that it won't happen.
o Extend the old "padding" region to include compiler-created temps
that can appear to the rest of the rest of the system as
Dalvik registers. The new temps will have Dalvik register numbers
of -2 and lower.
o Treat Method* for the current method as a special Dalvik register
denoted by reg number -1.
Change-Id: I5b5f3aef9c6a01d3a647ced6ec06981ed228c785
diff --git a/src/stack.h b/src/stack.h
index 382ad24..9093cb1 100644
--- a/src/stack.h
+++ b/src/stack.h
@@ -59,6 +59,8 @@
uintptr_t LoadCalleeSave(int num) const;
+ static int GetVRegOffset(const DexFile::CodeItem* code_item, uint32_t core_spills,
+ uint32_t fp_spills, size_t frame_size, int reg);
uint32_t GetVReg(const DexFile::CodeItem* code_item, uint32_t core_spills, uint32_t fp_spills,
size_t frame_size, int vreg) const;