Enable constant pool support.

src/ppc/code-stubs-ppc.cc

 // Copyright 2014 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_PPC
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 93 matching lines @@
 
 void HydrogenCodeStub::GenerateLightweightMiss(MacroAssembler* masm,
                                                ExternalReference miss) {
   // Update the static counter each time a new code stub is generated.
   isolate()->counters()->code_stubs()->Increment();
 
   CallInterfaceDescriptor descriptor = GetCallInterfaceDescriptor();
   int param_count = descriptor.GetEnvironmentParameterCount();
   {
     // Call the runtime system in a fresh internal frame.
-    FrameScope scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
     DCHECK(param_count == 0 ||
            r3.is(descriptor.GetEnvironmentParameterRegister(param_count - 1)));
     // Push arguments
     for (int i = 0; i < param_count; ++i) {
       __ push(descriptor.GetEnvironmentParameterRegister(i));
     }
     __ CallExternalReference(miss, param_count);
   }
 
   __ Ret();
@@ skipping 1026 matching lines @@
   }
 
   // Retrieve the handler context, SP and FP.
   __ mov(cp, Operand(pending_handler_context_address));
   __ LoadP(cp, MemOperand(cp));
   __ mov(sp, Operand(pending_handler_sp_address));
   __ LoadP(sp, MemOperand(sp));
   __ mov(fp, Operand(pending_handler_fp_address));
   __ LoadP(fp, MemOperand(fp));
 
-  // If the handler is a JS frame, restore the context to the frame.
-  // (kind == ENTRY) == (fp == 0) == (cp == 0), so we could test either fp
-  // or cp.
+  // If the handler is a JS frame, restore the context to the frame. Note that
+  // the context will be set to (cp == 0) for non-JS frames.
   Label skip;
   __ cmpi(cp, Operand::Zero());
   __ beq(&skip);
   __ StoreP(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
   __ bind(&skip);
 
   // Compute the handler entry address and jump to it.
+  ConstantPoolUnavailableScope constant_pool_unavailable(masm);
   __ mov(r4, Operand(pending_handler_code_address));
   __ LoadP(r4, MemOperand(r4));
   __ mov(r5, Operand(pending_handler_offset_address));
   __ LoadP(r5, MemOperand(r5));
   __ addi(r4, r4, Operand(Code::kHeaderSize - kHeapObjectTag));  // Code start
+  if (FLAG_enable_embedded_constant_pool) {
+    __ LoadTargetConstantPoolPointerRegister(r4);
+  }
   __ add(ip, r4, r5);
   __ Jump(ip);
 }
 
 
 void JSEntryStub::Generate(MacroAssembler* masm) {
   // r3: code entry
   // r4: function
   // r5: receiver
   // r6: argc
@@ skipping 21 matching lines @@
   //  __ lwz(r7, MemOperand(sp, offset_to_argv));
 
   // Push a frame with special values setup to mark it as an entry frame.
   // r3: code entry
   // r4: function
   // r5: receiver
   // r6: argc
   // r7: argv
   __ li(r0, Operand(-1));  // Push a bad frame pointer to fail if it is used.
   __ push(r0);
+  if (FLAG_enable_embedded_constant_pool) {
+    __ li(kConstantPoolRegister, Operand::Zero());
+    __ push(kConstantPoolRegister);
+  }
   int marker = type();
   __ LoadSmiLiteral(r0, Smi::FromInt(marker));
   __ push(r0);
   __ push(r0);
   // Save copies of the top frame descriptor on the stack.
   __ mov(r8, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate())));
   __ LoadP(r0, MemOperand(r8));
   __ push(r0);
 
   // Set up frame pointer for the frame to be pushed.
@@ skipping 16 matching lines @@
   __ push(ip);  // frame-type
 
   // Jump to a faked try block that does the invoke, with a faked catch
   // block that sets the pending exception.
   __ b(&invoke);
 
   __ bind(&handler_entry);
   handler_offset_ = handler_entry.pos();
   // Caught exception: Store result (exception) in the pending exception
   // field in the JSEnv and return a failure sentinel.  Coming in here the
-  // fp will be invalid because the PushTryHandler below sets it to 0 to
+  // fp will be invalid because the PushStackHandler below sets it to 0 to
   // signal the existence of the JSEntry frame.
   __ mov(ip, Operand(ExternalReference(Isolate::kPendingExceptionAddress,
                                        isolate())));
 
   __ StoreP(r3, MemOperand(ip));
   __ LoadRoot(r3, Heap::kExceptionRootIndex);
   __ b(&exit);
 
-  // Invoke: Link this frame into the handler chain.  There's only one
-  // handler block in this code object, so its index is 0.
+  // Invoke: Link this frame into the handler chain.
   __ bind(&invoke);
-  // Must preserve r0-r4, r5-r7 are available. (needs update for PPC)
-  __ PushTryHandler(StackHandler::JS_ENTRY, 0);
+  // Must preserve r3-r7.
+  __ PushStackHandler();
   // If an exception not caught by another handler occurs, this handler
   // returns control to the code after the b(&invoke) above, which
   // restores all kCalleeSaved registers (including cp and fp) to their
   // saved values before returning a failure to C.
 
   // Clear any pending exceptions.
   __ mov(r8, Operand(isolate()->factory()->the_hole_value()));
   __ mov(ip, Operand(ExternalReference(Isolate::kPendingExceptionAddress,
                                        isolate())));
   __ StoreP(r8, MemOperand(ip));
@@ skipping 18 matching lines @@
   }
   __ LoadP(ip, MemOperand(ip));  // deref address
 
   // Branch and link to JSEntryTrampoline.
   // the address points to the start of the code object, skip the header
   __ addi(ip, ip, Operand(Code::kHeaderSize - kHeapObjectTag));
   __ mtctr(ip);
   __ bctrl();  // make the call
 
   // Unlink this frame from the handler chain.
-  __ PopTryHandler();
+  __ PopStackHandler();
 
   __ bind(&exit);  // r3 holds result
   // Check if the current stack frame is marked as the outermost JS frame.
   Label non_outermost_js_2;
   __ pop(r8);
   __ CmpSmiLiteral(r8, Smi::FromInt(StackFrame::OUTERMOST_JSENTRY_FRAME), r0);
   __ bne(&non_outermost_js_2);
   __ mov(r9, Operand::Zero());
   __ mov(r8, Operand(ExternalReference(js_entry_sp)));
   __ StoreP(r9, MemOperand(r8));
@@ skipping 201 matching lines @@
 
   // Slow-case.  Tail call builtin.
   __ bind(&slow);
   if (!ReturnTrueFalseObject()) {
     if (HasArgsInRegisters()) {
       __ Push(r3, r4);
     }
     __ InvokeBuiltin(Builtins::INSTANCE_OF, JUMP_FUNCTION);
   } else {
     {
-      FrameScope scope(masm, StackFrame::INTERNAL);
+      FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
       __ Push(r3, r4);
       __ InvokeBuiltin(Builtins::INSTANCE_OF, CALL_FUNCTION);
     }
     if (CpuFeatures::IsSupported(ISELECT)) {
       __ cmpi(r3, Operand::Zero());
       __ LoadRoot(r3, Heap::kTrueValueRootIndex);
       __ LoadRoot(r4, Heap::kFalseValueRootIndex);
       __ isel(eq, r3, r3, r4);
     } else {
       Label true_value, done;
@@ skipping 1051 matching lines @@
   if (!FLAG_pretenuring_call_new) {
     // Make sure the function is the Array() function.
     __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, r7);
     __ cmp(r4, r7);
     __ bne(&not_array_function);
 
     // The target function is the Array constructor,
     // Create an AllocationSite if we don't already have it, store it in the
     // slot.
     {
-      FrameScope scope(masm, StackFrame::INTERNAL);
+      FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
 
       // Arguments register must be smi-tagged to call out.
       __ SmiTag(r3);
       __ Push(r6, r5, r4, r3);
 
       CreateAllocationSiteStub create_stub(masm->isolate());
       __ CallStub(&create_stub);
 
       __ Pop(r6, r5, r4, r3);
       __ SmiUntag(r3);
@@ skipping 65 matching lines @@
   __ li(r5, Operand::Zero());
   __ GetBuiltinFunction(r4, Builtins::CALL_NON_FUNCTION);
   __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(),
           RelocInfo::CODE_TARGET);
 }
 
 
 static void EmitWrapCase(MacroAssembler* masm, int argc, Label* cont) {
   // Wrap the receiver and patch it back onto the stack.
   {
-    FrameScope frame_scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope frame_scope(masm, StackFrame::INTERNAL);
     __ Push(r4, r6);
     __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
     __ pop(r4);
   }
   __ StoreP(r3, MemOperand(sp, argc * kPointerSize), r0);
   __ b(cont);
 }
 
 
 static void CallFunctionNoFeedback(MacroAssembler* masm, int argc,
@@ skipping 297 matching lines @@
   // Update stats.
   __ LoadP(r7, FieldMemOperand(r5, with_types_offset));
   __ AddSmiLiteral(r7, r7, Smi::FromInt(1), r0);
   __ StoreP(r7, FieldMemOperand(r5, with_types_offset), r0);
 
   // Store the function. Use a stub since we need a frame for allocation.
   // r5 - vector
   // r6 - slot
   // r4 - function
   {
-    FrameScope scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
     CreateWeakCellStub create_stub(masm->isolate());
     __ Push(r4);
     __ CallStub(&create_stub);
     __ Pop(r4);
   }
 
   __ b(&have_js_function);
 
   // We are here because tracing is on or we encountered a MISS case we can't
   // handle here.
   __ bind(&miss);
   GenerateMiss(masm);
 
   // the slow case
   __ bind(&slow_start);
   // Check that the function is really a JavaScript function.
   // r4: pushed function (to be verified)
   __ JumpIfSmi(r4, &non_function);
 
   // Goto slow case if we do not have a function.
   __ CompareObjectType(r4, r7, r7, JS_FUNCTION_TYPE);
   __ bne(&slow);
   __ b(&have_js_function);
 }
 
 
 void CallICStub::GenerateMiss(MacroAssembler* masm) {
-  FrameScope scope(masm, StackFrame::INTERNAL);
+  FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
 
   // Push the function and feedback info.
   __ Push(r4, r5, r6);
 
   // Call the entry.
   IC::UtilityId id = GetICState() == DEFAULT ? IC::kCallIC_Miss
                                              : IC::kCallIC_Customization_Miss;
 
   ExternalReference miss = ExternalReference(IC_Utility(id), masm->isolate());
   __ CallExternalReference(miss, 3);
@@ skipping 948 matching lines @@
   GenerateMiss(masm);
 }
 
 
 void CompareICStub::GenerateMiss(MacroAssembler* masm) {
   {
     // Call the runtime system in a fresh internal frame.
     ExternalReference miss =
         ExternalReference(IC_Utility(IC::kCompareIC_Miss), isolate());
 
-    FrameScope scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
     __ Push(r4, r3);
     __ Push(r4, r3);
     __ LoadSmiLiteral(r0, Smi::FromInt(op()));
     __ push(r0);
     __ CallExternalReference(miss, 3);
     // Compute the entry point of the rewritten stub.
     __ addi(r5, r3, Operand(Code::kHeaderSize - kHeapObjectTag));
     // Restore registers.
     __ Pop(r4, r3);
   }
@@ skipping 1577 matching lines @@
                            kStackUnwindSpace, NULL,
                            MemOperand(fp, 6 * kPointerSize), NULL);
 }
 
 
 #undef __
 }
 }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_PPC