Direct call api functions (arm implementation)

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
===================================================================
--- src/arm/code-stubs-arm.cc	(revision 6551)
+++ src/arm/code-stubs-arm.cc	(working copy)
@@ -3313,9 +3313,17 @@
   // this by performing a garbage collection and retrying the
   // builtin once.
 
+  // Compute the argv pointer in a callee-saved register.
+  __ add(r6, sp, Operand(r0, LSL, kPointerSizeLog2));
+  __ sub(r6, r6, Operand(kPointerSize));
+
   // Enter the exit frame that transitions from JavaScript to C++.
   __ EnterExitFrame(save_doubles_);
 
+  // Setup argc and the builtin function in callee-saved registers.
+  __ mov(r4, Operand(r0));
+  __ mov(r5, Operand(r1));
+
   // r4: number of arguments (C callee-saved)
   // r5: pointer to builtin function (C callee-saved)
   // r6: pointer to first argument (C callee-saved)
@@ -5717,7 +5725,23 @@
   __ Jump(r2);
 }
 
+void DirectCEntryStub::Generate(MacroAssembler* masm) {
+  __ ldr(pc, MemOperand(sp, 0));
+}
 
+void DirectCEntryStub::GenerateCall(MacroAssembler* masm, 
+                                    ApiFunction *function) {
+  __ mov(lr, Operand(reinterpret_cast<intptr_t>(GetCode().location()),
+                  RelocInfo::CODE_TARGET));

[antonm, 2011/02/03 11:16:25]

indentation is slightly off.

+  // Push return address (accessible to GC through exit frame pc).
+  ExternalReference ref =
+      ExternalReference(function, ExternalReference::DIRECT_CALL);
+  __ mov(r2, Operand(reinterpret_cast<intptr_t>(ref.address())));
+  __ add(ip, pc, Operand(4));
+  __ str(ip, MemOperand(sp, 0));
+  __ Jump(r2);  // Call the api function.
+}
+
 #undef __
 
 } }  // namespace v8::internal