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

src/compiler/arm/code-generator-arm.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/arm/macro-assembler-arm.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 355 matching lines @@
         __ ldr(kScratchReg, FieldMemOperand(func, JSFunction::kContextOffset));
         __ cmp(cp, kScratchReg);
         __ Assert(eq, kWrongFunctionContext);
       }
       AssembleDeconstructActivationRecord();
       __ ldr(ip, FieldMemOperand(func, JSFunction::kCodeEntryOffset));
       __ Jump(ip);
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       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(LeaveCC, i.OutputSBit());
       break;
     case kArchLookupSwitch:
       AssembleArchLookupSwitch(instr);
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
     case kArchTableSwitch:
       AssembleArchTableSwitch(instr);
@@ skipping 413 matching lines @@
       size_t index = 0;
       MemOperand operand = i.InputOffset(&index);
       __ vstr(i.InputFloat64Register(index), operand);
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
     }
     case kArmPush:
       __ Push(i.InputRegister(0));
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
+    case kArmPoke: {
+      int const slot = MiscField::decode(instr->opcode());
+      __ str(i.InputRegister(0), MemOperand(sp, slot * kPointerSize));
+      DCHECK_EQ(LeaveCC, i.OutputSBit());
+      break;
+    }
     case kArmStoreWriteBarrier: {
       Register object = i.InputRegister(0);
       Register index = i.InputRegister(1);
       Register value = i.InputRegister(2);
       __ add(index, object, index);
       __ str(value, MemOperand(index));
       SaveFPRegsMode mode =
           frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs;
       LinkRegisterStatus lr_status = kLRHasNotBeenSaved;
       __ RecordWrite(object, index, value, lr_status, mode);
@@ skipping 398 matching lines @@
       }
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8