move CallApiFunctionAndReturn to code-stubs-*

src/mips/code-stubs-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 4815 matching lines @@
 
   Label fast_elements_case;
   __ Branch(&fast_elements_case, eq, a3, Operand(FAST_ELEMENTS));
   GenerateCase(masm, FAST_HOLEY_ELEMENTS);
 
   __ bind(&fast_elements_case);
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
 
+static int AddressOffset(ExternalReference ref0, ExternalReference ref1) {
+  return ref0.address() - ref1.address();
+}
+
+
+// Calls an API function.  Allocates HandleScope, extracts returned value
+// from handle and propagates exceptions.  Restores context.  stack_space
+// - space to be unwound on exit (includes the call JS arguments space and
+// the additional space allocated for the fast call).
+static void CallApiFunctionAndReturn(MacroAssembler* masm,
+                                     Register function_address,
+                                     ExternalReference thunk_ref,
+                                     int stack_space,
+                                     MemOperand* stack_space_operand,
+                                     MemOperand return_value_operand,
+                                     MemOperand* context_restore_operand) {
+  Isolate* isolate = masm->isolate();
+  ExternalReference next_address =
+      ExternalReference::handle_scope_next_address(isolate);
+  const int kNextOffset = 0;
+  const int kLimitOffset = AddressOffset(
+      ExternalReference::handle_scope_limit_address(isolate), next_address);
+  const int kLevelOffset = AddressOffset(
+      ExternalReference::handle_scope_level_address(isolate), next_address);
+
+  DCHECK(function_address.is(a1) || function_address.is(a2));
+
+  Label profiler_disabled;
+  Label end_profiler_check;
+  __ li(t9, Operand(ExternalReference::is_profiling_address(isolate)));
+  __ lb(t9, MemOperand(t9, 0));
+  __ Branch(&profiler_disabled, eq, t9, Operand(zero_reg));
+
+  // Additional parameter is the address of the actual callback.
+  __ li(t9, Operand(thunk_ref));
+  __ jmp(&end_profiler_check);
+
+  __ bind(&profiler_disabled);
+  __ mov(t9, function_address);
+  __ bind(&end_profiler_check);
+
+  // Allocate HandleScope in callee-save registers.
+  __ li(s3, Operand(next_address));
+  __ lw(s0, MemOperand(s3, kNextOffset));
+  __ lw(s1, MemOperand(s3, kLimitOffset));
+  __ lw(s2, MemOperand(s3, kLevelOffset));
+  __ Addu(s2, s2, Operand(1));
+  __ sw(s2, MemOperand(s3, kLevelOffset));
+
+  if (FLAG_log_timer_events) {
+    FrameScope frame(masm, StackFrame::MANUAL);
+    __ PushSafepointRegisters();
+    __ PrepareCallCFunction(1, a0);
+    __ li(a0, Operand(ExternalReference::isolate_address(isolate)));
+    __ CallCFunction(ExternalReference::log_enter_external_function(isolate),
+                     1);
+    __ PopSafepointRegisters();
+  }
+
+  // Native call returns to the DirectCEntry stub which redirects to the
+  // return address pushed on stack (could have moved after GC).
+  // DirectCEntry stub itself is generated early and never moves.
+  DirectCEntryStub stub(isolate);
+  stub.GenerateCall(masm, t9);
+
+  if (FLAG_log_timer_events) {
+    FrameScope frame(masm, StackFrame::MANUAL);
+    __ PushSafepointRegisters();
+    __ PrepareCallCFunction(1, a0);
+    __ li(a0, Operand(ExternalReference::isolate_address(isolate)));
+    __ CallCFunction(ExternalReference::log_leave_external_function(isolate),
+                     1);
+    __ PopSafepointRegisters();
+  }
+
+  Label promote_scheduled_exception;
+  Label exception_handled;
+  Label delete_allocated_handles;
+  Label leave_exit_frame;
+  Label return_value_loaded;
+
+  // Load value from ReturnValue.
+  __ lw(v0, return_value_operand);
+  __ bind(&return_value_loaded);
+
+  // No more valid handles (the result handle was the last one). Restore
+  // previous handle scope.
+  __ sw(s0, MemOperand(s3, kNextOffset));
+  if (__ emit_debug_code()) {
+    __ lw(a1, MemOperand(s3, kLevelOffset));
+    __ Check(eq, kUnexpectedLevelAfterReturnFromApiCall, a1, Operand(s2));
+  }
+  __ Subu(s2, s2, Operand(1));
+  __ sw(s2, MemOperand(s3, kLevelOffset));
+  __ lw(at, MemOperand(s3, kLimitOffset));
+  __ Branch(&delete_allocated_handles, ne, s1, Operand(at));
+
+  // Check if the function scheduled an exception.
+  __ bind(&leave_exit_frame);
+  __ LoadRoot(t0, Heap::kTheHoleValueRootIndex);
+  __ li(at, Operand(ExternalReference::scheduled_exception_address(isolate)));
+  __ lw(t1, MemOperand(at));
+  __ Branch(&promote_scheduled_exception, ne, t0, Operand(t1));
+  __ bind(&exception_handled);
+
+  bool restore_context = context_restore_operand != NULL;
+  if (restore_context) {
+    __ lw(cp, *context_restore_operand);
+  }
+  if (stack_space_operand != NULL) {
+    __ lw(s0, *stack_space_operand);
+  } else {
+    __ li(s0, Operand(stack_space));
+  }
+  __ LeaveExitFrame(false, s0, !restore_context, EMIT_RETURN,
+                    stack_space_operand != NULL);
+
+  __ bind(&promote_scheduled_exception);
+  {
+    FrameScope frame(masm, StackFrame::INTERNAL);
+    __ CallExternalReference(
+        ExternalReference(Runtime::kPromoteScheduledException, isolate), 0);
+  }
+  __ jmp(&exception_handled);
+
+  // HandleScope limit has changed. Delete allocated extensions.
+  __ bind(&delete_allocated_handles);
+  __ sw(s1, MemOperand(s3, kLimitOffset));
+  __ mov(s0, v0);
+  __ mov(a0, v0);
+  __ PrepareCallCFunction(1, s1);
+  __ li(a0, Operand(ExternalReference::isolate_address(isolate)));
+  __ CallCFunction(ExternalReference::delete_handle_scope_extensions(isolate),
+                   1);
+  __ mov(v0, s0);
+  __ jmp(&leave_exit_frame);
+}
+
+
 static void CallApiFunctionStubHelper(MacroAssembler* masm,
                                       const ParameterCount& argc,
                                       bool return_first_arg,
                                       bool call_data_undefined) {
   // ----------- S t a t e -------------
   //  -- a0                  : callee
   //  -- t0                  : call_data
   //  -- a2                  : holder
   //  -- a1                  : api_function_address
   //  -- a3                  : number of arguments if argc is a register
@@ skipping 94 matching lines @@
   }
   MemOperand return_value_operand(fp, return_value_offset * kPointerSize);
   int stack_space = 0;
   MemOperand is_construct_call_operand =
       MemOperand(sp, 4 * kPointerSize + kCArgsSlotsSize);
   MemOperand* stack_space_operand = &is_construct_call_operand;
   if (argc.is_immediate()) {
     stack_space = argc.immediate() + FCA::kArgsLength + 1;
     stack_space_operand = NULL;
   }
-  __ CallApiFunctionAndReturn(api_function_address, thunk_ref, stack_space,
-                              stack_space_operand, return_value_operand,
-                              &context_restore_operand);
+  CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, stack_space,
+                           stack_space_operand, return_value_operand,
+                           &context_restore_operand);
 }
 
 
 void CallApiFunctionStub::Generate(MacroAssembler* masm) {
   bool call_data_undefined = this->call_data_undefined();
   CallApiFunctionStubHelper(masm, ParameterCount(a3), false,
                             call_data_undefined);
 }
 
 
@@ skipping 26 matching lines @@
 
   // Create PropertyAccessorInfo instance on the stack above the exit frame with
   // a1 (internal::Object** args_) as the data.
   __ sw(a1, MemOperand(sp, 1 * kPointerSize));
   __ Addu(a1, sp, Operand(1 * kPointerSize));  // a1 = AccessorInfo&
 
   const int kStackUnwindSpace = PropertyCallbackArguments::kArgsLength + 1;
 
   ExternalReference thunk_ref =
       ExternalReference::invoke_accessor_getter_callback(isolate());
-  __ CallApiFunctionAndReturn(api_function_address, thunk_ref,
-                              kStackUnwindSpace, NULL,
-                              MemOperand(fp, 6 * kPointerSize), NULL);
+  CallApiFunctionAndReturn(masm, api_function_address, thunk_ref,
+                           kStackUnwindSpace, NULL,
+                           MemOperand(fp, 6 * kPointerSize), NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS