Revert "JumpToFrame refactor"

runtime/vm/stub_code_arm.cc

Index: runtime/vm/stub_code_arm.cc
diff --git a/runtime/vm/stub_code_arm.cc b/runtime/vm/stub_code_arm.cc
index 87b054d36aec0ef517bd1a94d3a3338ba5f440e7..10722ccf45f2d5e0dbb720e4472563064df7d511 100644
--- a/runtime/vm/stub_code_arm.cc
+++ b/runtime/vm/stub_code_arm.cc
@@ -1850,19 +1850,23 @@ void StubCode::GenerateGetStackPointerStub(Assembler* assembler) {
 }
 
 
-// Jump to a frame on the call stack.
+// Jump to the exception or error handler.
 // LR: return address.
 // R0: program_counter.
 // R1: stack_pointer.
 // R2: frame_pointer.
-// R3: thread.
+// R3: error object.
+// SP + 0: address of stacktrace object.
+// SP + 4: thread.
 // Does not return.
-void StubCode::GenerateJumpToFrameStub(Assembler* assembler) {
+void StubCode::GenerateJumpToExceptionHandlerStub(Assembler* assembler) {
   ASSERT(kExceptionObjectReg == R0);
   ASSERT(kStackTraceObjectReg == R1);
   __ mov(IP, Operand(R1));      // Copy Stack pointer into IP.
   __ mov(LR, Operand(R0));      // Program counter.
-  __ mov(THR, Operand(R3));     // Thread.
+  __ mov(R0, Operand(R3));      // Exception object.
+  __ ldr(R1, Address(SP, 0));   // StackTrace object.
+  __ ldr(THR, Address(SP, 4));  // Thread.
   __ mov(FP, Operand(R2));      // Frame_pointer.
   __ mov(SP, Operand(IP));      // Set Stack pointer.
   // Set the tag.
@@ -1874,27 +1878,6 @@ void StubCode::GenerateJumpToFrameStub(Assembler* assembler) {
   // Restore the pool pointer.
   __ RestoreCodePointer();
   __ LoadPoolPointer();
-  __ bx(LR);  // Jump to continuation point.
-}
-
-
-// Run an exception handler.  Execution comes from JumpToFrame
-// stub or from the simulator.
-//
-// The arguments are stored in the Thread object.
-// Does not return.
-void StubCode::GenerateRunExceptionHandlerStub(Assembler* assembler) {
-  __ LoadFromOffset(kWord, LR, THR, Thread::resume_pc_offset());
-  __ LoadImmediate(R2, 0);
-
-  // Exception object.
-  __ LoadFromOffset(kWord, R0, THR, Thread::active_exception_offset());
-  __ StoreToOffset(kWord, R2, THR, Thread::active_exception_offset());
-
-  // Stacktrace object.
-  __ LoadFromOffset(kWord, R1, THR, Thread::active_stacktrace_offset());
-  __ StoreToOffset(kWord, R2, THR, Thread::active_stacktrace_offset());
-
   __ bx(LR);  // Jump to the exception handler code.
 }