PPC/s390: [builtins] Construct builtin frame in String/Number ctors

src/ppc/macro-assembler-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 <assert.h>  // For assert
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/base/bits.h"
@@ skipping 1054 matching lines @@
     LoadP(kConstantPoolRegister,
           MemOperand(fp, StandardFrameConstants::kConstantPoolOffset));
   }
   mtlr(r0);
   frame_ends = pc_offset();
   Add(sp, fp, StandardFrameConstants::kCallerSPOffset + stack_adjustment, r0);
   mr(fp, ip);
   return frame_ends;
 }
 
+void MacroAssembler::EnterBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  int fp_delta = 0;
+  mflr(r0);
+  if (FLAG_enable_embedded_constant_pool) {
+    if (target.is_valid()) {
+      Push(r0, fp, kConstantPoolRegister, context, target);
+      fp_delta = 3;
+    } else {
+      Push(r0, fp, kConstantPoolRegister, context);
+      fp_delta = 2;
+    }
+  } else {
+    if (target.is_valid()) {
+      Push(r0, fp, context, target);
+      fp_delta = 2;
+    } else {
+      Push(r0, fp, context);
+      fp_delta = 1;
+    }
+  }
+  addi(fp, sp, Operand(fp_delta * kPointerSize));
+  Push(argc);
+}
+
+void MacroAssembler::LeaveBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  Pop(argc);
+  if (FLAG_enable_embedded_constant_pool) {
+    if (target.is_valid()) {
+      Pop(r0, fp, kConstantPoolRegister, context, target);
+    } else {
+      Pop(r0, fp, kConstantPoolRegister, context);
+    }
+  } else {
+    if (target.is_valid()) {
+      Pop(r0, fp, context, target);
+    } else {
+      Pop(r0, fp, context);
+    }
+  }
+  mtlr(r0);
+}
 
 // ExitFrame layout (probably wrongish.. needs updating)
 //
 //  SP -> previousSP
 //        LK reserved
 //        code
 //        sp_on_exit (for debug?)
 // oldSP->prev SP
 //        LK
 //        <parameters on stack>
@@ skipping 3787 matching lines @@
   }
   if (mag.shift > 0) srawi(result, result, mag.shift);
   ExtractBit(r0, dividend, 31);
   add(result, result, r0);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC