PPC/s390: [Interpreter] Adds stackcheck in InterpreterPushArgsAndCall/Construct builtins.

src/builtins/s390/builtins-s390.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.
 
 #if V8_TARGET_ARCH_S390
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1184 matching lines @@
     // Push function as argument and compile for baseline.
     __ push(r3);
     __ CallRuntime(Runtime::kCompileBaseline);
 
     // Restore return value.
     __ pop(r2);
   }
   __ Ret();
 }
 
+static void Generate_StackOverflowCheck(MacroAssembler* masm, Register num_args,
+                                        Register scratch,
+                                        Label* stack_overflow) {
+  // Check the stack for overflow. We are not trying to catch
+  // interruptions (e.g. debug break and preemption) here, so the "real stack
+  // limit" is checked.
+  __ LoadRoot(scratch, Heap::kRealStackLimitRootIndex);
+  // Make scratch the space we have left. The stack might already be overflowed
+  // here which will cause scratch to become negative.
+  __ SubP(scratch, sp, scratch);
+  // Check if the arguments will overflow the stack.
+  __ ShiftLeftP(r0, num_args, Operand(kPointerSizeLog2));
+  __ CmpP(scratch, r0);
+  __ ble(stack_overflow);  // Signed comparison.
+}
+
 static void Generate_InterpreterPushArgs(MacroAssembler* masm,
                                          Register num_args, Register index,
-                                         Register count, Register scratch) {
-  // TODO(mythria): Add a stack check before pushing arguments.
+                                         Register count, Register scratch,
+                                         Label* stack_overflow) {
+  // Add a stack check before pushing arguments.
+  Generate_StackOverflowCheck(masm, num_args, scratch, stack_overflow);
+
   Label loop;
   __ AddP(index, index, Operand(kPointerSize));  // Bias up for LoadPU
   __ LoadRR(r0, count);
   __ bind(&loop);
   __ LoadP(scratch, MemOperand(index, -kPointerSize));
   __ lay(index, MemOperand(index, -kPointerSize));
   __ push(scratch);
   __ SubP(r0, Operand(1));
   __ bne(&loop);
 }
 
 // static
 void Builtins::Generate_InterpreterPushArgsAndCallImpl(
     MacroAssembler* masm, TailCallMode tail_call_mode,
     CallableType function_type) {
   // ----------- S t a t e -------------
   //  -- r2 : the number of arguments (not including the receiver)
   //  -- r4 : the address of the first argument to be pushed. Subsequent
   //          arguments should be consecutive above this, in the same order as
   //          they are to be pushed onto the stack.
   //  -- r3 : the target to call (can be any Object).
   // -----------------------------------
+  Label stack_overflow;
 
   // Calculate number of arguments (AddP one for receiver).
   __ AddP(r5, r2, Operand(1));
 
   // Push the arguments.
-  Generate_InterpreterPushArgs(masm, r5, r4, r5, r6);
+  Generate_InterpreterPushArgs(masm, r5, r4, r5, r6, &stack_overflow);
 
   // Call the target.
   if (function_type == CallableType::kJSFunction) {
     __ Jump(masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny,
                                                       tail_call_mode),
             RelocInfo::CODE_TARGET);
   } else {
     DCHECK_EQ(function_type, CallableType::kAny);
     __ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny,
                                               tail_call_mode),
             RelocInfo::CODE_TARGET);
   }
+
+  __ bind(&stack_overflow);
+  {
+    __ TailCallRuntime(Runtime::kThrowStackOverflow);
+    // Unreachable Code.
+    __ bkpt(0);
+  }
 }
 
 // static
 void Builtins::Generate_InterpreterPushArgsAndConstructImpl(
     MacroAssembler* masm, CallableType construct_type) {
   // ----------- S t a t e -------------
   // -- r2 : argument count (not including receiver)
   // -- r5 : new target
   // -- r3 : constructor to call
   // -- r4 : allocation site feedback if available, undefined otherwise.
   // -- r6 : address of the first argument
   // -----------------------------------
+  Label stack_overflow;
 
   // Push a slot for the receiver to be constructed.
   __ LoadImmP(r0, Operand::Zero());
   __ push(r0);
 
   // Push the arguments (skip if none).
   Label skip;
   __ CmpP(r2, Operand::Zero());
   __ beq(&skip);
-  Generate_InterpreterPushArgs(masm, r2, r6, r2, r7);
+  Generate_InterpreterPushArgs(masm, r2, r6, r2, r7, &stack_overflow);
   __ bind(&skip);
 
   __ AssertUndefinedOrAllocationSite(r4, r7);
   if (construct_type == CallableType::kJSFunction) {
     __ AssertFunction(r3);
 
     // Tail call to the function-specific construct stub (still in the caller
     // context at this point).
     __ LoadP(r6, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
     __ LoadP(r6, FieldMemOperand(r6, SharedFunctionInfo::kConstructStubOffset));
     // Jump to the construct function.
     __ AddP(ip, r6, Operand(Code::kHeaderSize - kHeapObjectTag));
     __ Jump(ip);
 
   } else {
     DCHECK_EQ(construct_type, CallableType::kAny);
     // Call the constructor with r2, r3, and r5 unmodified.
     __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
   }
+
+  __ bind(&stack_overflow);
+  {
+    __ TailCallRuntime(Runtime::kThrowStackOverflow);
+    // Unreachable Code.
+    __ bkpt(0);
+  }
 }
 
 // static
 void Builtins::Generate_InterpreterPushArgsAndConstructArray(
     MacroAssembler* masm) {
   // ----------- S t a t e -------------
   // -- r2 : argument count (not including receiver)
   // -- r3 : target to call verified to be Array function
   // -- r4 : allocation site feedback if available, undefined otherwise.
   // -- r5 : address of the first argument
   // -----------------------------------
+  Label stack_overflow;
 
   __ AddP(r6, r2, Operand(1));  // Add one for receiver.
 
-  // TODO(mythria): Add a stack check before pushing arguments.
   // Push the arguments. r6, r8, r3 will be modified.
-  Generate_InterpreterPushArgs(masm, r6, r5, r6, r7);
+  Generate_InterpreterPushArgs(masm, r6, r5, r6, r7, &stack_overflow);
 
   // Array constructor expects constructor in r5. It is same as r3 here.
   __ LoadRR(r5, r3);
 
   ArrayConstructorStub stub(masm->isolate());
   __ TailCallStub(&stub);
+
+  __ bind(&stack_overflow);
+  {
+    __ TailCallRuntime(Runtime::kThrowStackOverflow);
+    // Unreachable Code.
+    __ bkpt(0);
+  }
 }
 
 void Builtins::Generate_InterpreterEnterBytecodeDispatch(MacroAssembler* masm) {
   // Set the return address to the correct point in the interpreter entry
   // trampoline.
   Smi* interpreter_entry_return_pc_offset(
       masm->isolate()->heap()->interpreter_entry_return_pc_offset());
   DCHECK_NE(interpreter_entry_return_pc_offset, Smi::FromInt(0));
   __ Move(r4, masm->isolate()->builtins()->InterpreterEntryTrampoline());
   __ AddP(r14, r4, Operand(interpreter_entry_return_pc_offset->value() +
@@ skipping 821 matching lines @@
   }
 
   // 4c. The new.target is not a constructor, throw an appropriate TypeError.
   __ bind(&new_target_not_constructor);
   {
     __ StoreP(r5, MemOperand(sp, 0));
     __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
   }
 }
 
-static void ArgumentAdaptorStackCheck(MacroAssembler* masm,
-                                      Label* stack_overflow) {
-  // ----------- S t a t e -------------
-  //  -- r2 : actual number of arguments
-  //  -- r3 : function (passed through to callee)
-  //  -- r4 : expected number of arguments
-  //  -- r5 : new target (passed through to callee)
-  // -----------------------------------
-  // Check the stack for overflow. We are not trying to catch
-  // interruptions (e.g. debug break and preemption) here, so the "real stack
-  // limit" is checked.
-  __ LoadRoot(r7, Heap::kRealStackLimitRootIndex);
-  // Make r7 the space we have left. The stack might already be overflowed
-  // here which will cause r7 to become negative.
-  __ SubP(r7, sp, r7);
-  // Check if the arguments will overflow the stack.
-  __ ShiftLeftP(r0, r4, Operand(kPointerSizeLog2));
-  __ CmpP(r7, r0);
-  __ ble(stack_overflow);  // Signed comparison.
-}
-
 static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) {
   __ SmiTag(r2);
   __ LoadSmiLiteral(r6, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
   // Stack updated as such:
   //    old SP --->
   //                 R14 Return Addr
   //                 Old FP                     <--- New FP
   //                 Argument Adapter SMI
   //                 Function
   //                 ArgC as SMI                <--- New SP
@@ skipping 700 matching lines @@
   Label enough, too_few;
   __ LoadP(ip, FieldMemOperand(r3, JSFunction::kCodeEntryOffset));
   __ CmpP(r2, r4);
   __ blt(&too_few);
   __ CmpP(r4, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel));
   __ beq(&dont_adapt_arguments);
 
   {  // Enough parameters: actual >= expected
     __ bind(&enough);
     EnterArgumentsAdaptorFrame(masm);
-    ArgumentAdaptorStackCheck(masm, &stack_overflow);
+    Generate_StackOverflowCheck(masm, r4, r7, &stack_overflow);
 
     // Calculate copy start address into r2 and copy end address into r6.
     // r2: actual number of arguments as a smi
     // r3: function
     // r4: expected number of arguments
     // r5: new target (passed through to callee)
     // ip: code entry to call
     __ SmiToPtrArrayOffset(r2, r2);
     __ AddP(r2, fp);
     // adjust for return address and receiver
@@ skipping 17 matching lines @@
     __ lay(r2, MemOperand(r2, -kPointerSize));
     __ bne(&copy);
 
     __ b(&invoke);
   }
 
   {  // Too few parameters: Actual < expected
     __ bind(&too_few);
 
     EnterArgumentsAdaptorFrame(masm);
-    ArgumentAdaptorStackCheck(masm, &stack_overflow);
+    Generate_StackOverflowCheck(masm, r4, r7, &stack_overflow);
 
     // Calculate copy start address into r0 and copy end address is fp.
     // r2: actual number of arguments as a smi
     // r3: function
     // r4: expected number of arguments
     // r5: new target (passed through to callee)
     // ip: code entry to call
     __ SmiToPtrArrayOffset(r2, r2);
     __ lay(r2, MemOperand(r2, fp));
 
@@ skipping 58 matching lines @@
     __ bkpt(0);
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_S390