PPC: [turbofan] Add basic support for calling to (a subset of) C functions.

src/compiler/ppc/code-generator-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/compiler/code-generator.h"
 
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/ppc/macro-assembler-ppc.h"
@@ skipping 639 matching lines @@
                  FieldMemOperand(func, JSFunction::kContextOffset));
         __ cmp(cp, kScratchReg);
         __ Assert(eq, kWrongFunctionContext);
       }
       AssembleDeconstructActivationRecord();
       __ LoadP(ip, FieldMemOperand(func, JSFunction::kCodeEntryOffset));
       __ Jump(ip);
       DCHECK_EQ(LeaveRC, i.OutputRCBit());
       break;
     }
+    case kArchPrepareCallCFunction: {
+      int const num_parameters = MiscField::decode(instr->opcode());
+      __ PrepareCallCFunction(num_parameters, kScratchReg);
+      break;
+    }
+    case kArchCallCFunction: {
+      int const num_parameters = MiscField::decode(instr->opcode());
+      if (instr->InputAt(0)->IsImmediate()) {
+        ExternalReference ref = i.InputExternalReference(0);
+        __ CallCFunction(ref, num_parameters);
+      } else {
+        Register func = i.InputRegister(0);
+        __ CallCFunction(func, num_parameters);
+      }
+      break;
+    }
     case kArchJmp:
       AssembleArchJump(i.InputRpo(0));
       DCHECK_EQ(LeaveRC, i.OutputRCBit());
       break;
     case kArchLookupSwitch:
       AssembleArchLookupSwitch(instr);
       DCHECK_EQ(LeaveRC, i.OutputRCBit());
       break;
     case kArchTableSwitch:
       AssembleArchTableSwitch(instr);
@@ skipping 285 matching lines @@
       } else {
         __ andi(r0, i.InputRegister(0), i.InputImmediate(1));
       }
       DCHECK_EQ(SetRC, i.OutputRCBit());
       break;
 #endif
     case kPPC_Push:
       __ Push(i.InputRegister(0));
       DCHECK_EQ(LeaveRC, i.OutputRCBit());
       break;
+    case kPPC_PushFrame: {
+      int num_slots = i.InputInt32(1);
+      __ StorePU(i.InputRegister(0), MemOperand(sp, -num_slots * kPointerSize));
+      break;
+    }
+    case kPPC_StoreToStackSlot: {
+      int slot = i.InputInt32(1);
+      __ StoreP(i.InputRegister(0), MemOperand(sp, slot * kPointerSize));
+      break;
+    }
     case kPPC_ExtendSignWord8:
       __ extsb(i.OutputRegister(), i.InputRegister(0));
       DCHECK_EQ(LeaveRC, i.OutputRCBit());
       break;
     case kPPC_ExtendSignWord16:
       __ extsh(i.OutputRegister(), i.InputRegister(0));
       DCHECK_EQ(LeaveRC, i.OutputRCBit());
       break;
 #if V8_TARGET_ARCH_PPC64
     case kPPC_ExtendSignWord32:
@@ skipping 580 matching lines @@
       }
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8