PPC/s390: [wasm] Lazy compilation for asm.js

src/builtins/ppc/builtins-ppc.cc

Index: src/builtins/ppc/builtins-ppc.cc
diff --git a/src/builtins/ppc/builtins-ppc.cc b/src/builtins/ppc/builtins-ppc.cc
index 3efae357b4bb5a8c4a5257016dda546c0e620b20..14341704360b8456b9972a11293cb590f5553a87 100644
--- a/src/builtins/ppc/builtins-ppc.cc
+++ b/src/builtins/ppc/builtins-ppc.cc
@@ -3027,6 +3027,35 @@ void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
   }
 }
 
+void Builtins::Generate_WasmCompileLazy(MacroAssembler* masm) {
+  {
+    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
+
+    // Save all parameter registers (see wasm-linkage.cc). They might be
+    // overwritten in the runtime call below. We don't have any callee-saved
+    // registers in wasm, so no need to store anything else.
+    const RegList gp_regs = r3.bit() | r4.bit() | r5.bit() | r6.bit() |
+                            r7.bit() | r8.bit() | r9.bit() | r10.bit();
+    const RegList fp_regs = d1.bit() | d2.bit() | d3.bit() | d4.bit() |
+                            d5.bit() | d6.bit() | d7.bit() | d8.bit();
+    __ MultiPush(gp_regs);
+    __ MultiPushDoubles(fp_regs);
+
+    // Initialize cp register with kZero, CEntryStub will use it to set the
+    // current context on the isolate.
+    __ LoadSmiLiteral(cp, Smi::kZero);
+    __ CallRuntime(Runtime::kWasmCompileLazy);
+    // Store returned instruction start in ip.
+    __ addi(ip, r3, Operand(Code::kHeaderSize - kHeapObjectTag));
+
+    // Restore registers.
+    __ MultiPopDoubles(fp_regs);
+    __ MultiPop(gp_regs);
+  }
+  // Now jump to the instructions of the returned code object.
+  __ Jump(ip);
+}
+
 #undef __
 }  // namespace internal
 }  // namespace v8