void JSEntryStub::GenerateBody(MacroAssembler* masm, bool is_construct) {
Label invoke, handler_entry, exit;
Label not_outermost_js, not_outermost_js_2;
+
+#ifdef _WIN64
+ const int kCalleeSaveXMMRegisters = 10;
+ const int kFullXMMRegisterSize = 16;
+#endif
{ // NOLINT. Scope block confuses linter.
MacroAssembler::NoRootArrayScope uninitialized_root_register(masm);
// Set up frame.
__ push(rsi); // Only callee save in Win64 ABI, argument in AMD64 ABI.
#endif
__ push(rbx);
- // TODO(X64): On Win64, if we ever use XMM6-XMM15, the low low 64 bits are
- // callee save as well.
+
+#ifdef _WIN64
+ // On Win64 XMM6-XMM15 are callee-save
+ __ subq(rsp, Immediate(kCalleeSaveXMMRegisters * kFullXMMRegisterSize);
+ __ movdqu(Operand(rsp, kFullXMMRegisterSize * 0), xmm6);
+ __ movdqu(Operand(rsp, kFullXMMRegisterSize * 1), xmm7);
+ __ movdqu(Operand(rsp, kFullXMMRegisterSize * 2), xmm8);
+ __ movdqu(Operand(rsp, kFullXMMRegisterSize * 3), xmm9);
+ __ movdqu(Operand(rsp, kFullXMMRegisterSize * 4), xmm10);
+ __ movdqu(Operand(rsp, kFullXMMRegisterSize * 5), xmm11);
+ __ movdqu(Operand(rsp, kFullXMMRegisterSize * 6), xmm12);
+ __ movdqu(Operand(rsp, kFullXMMRegisterSize * 7), xmm13);
+ __ movdqu(Operand(rsp, kFullXMMRegisterSize * 8), xmm14);
+ __ movdqu(Operand(rsp, kFullXMMRegisterSize * 9), xmm15);
+#endif
// Set up the roots and smi constant registers.
// Needs to be done before any further smi loads.
}
// Restore callee-saved registers (X64 conventions).
+#ifdef _WIN64
+ // On Win64 XMM6-XMM15 are callee-save
+ __ movdqu(xmm6, Operand(rsp, kFullXMMRegisterSize * 0));
+ __ movdqu(xmm7, Operand(rsp, kFullXMMRegisterSize * 1));
+ __ movdqu(xmm8, Operand(rsp, kFullXMMRegisterSize * 2));
+ __ movdqu(xmm8, Operand(rsp, kFullXMMRegisterSize * 3));
+ __ movdqu(xmm10, Operand(rsp, kFullXMMRegisterSize * 4));
+ __ movdqu(xmm11, Operand(rsp, kFullXMMRegisterSize * 5));
+ __ movdqu(xmm12, Operand(rsp, kFullXMMRegisterSize * 6));
+ __ movdqu(xmm13, Operand(rsp, kFullXMMRegisterSize * 7));
+ __ movdqu(xmm14, Operand(rsp, kFullXMMRegisterSize * 8));
+ __ movdqu(xmm15, Operand(rsp, kFullXMMRegisterSize * 9));
+ __ addq(rsp, Immediate(kCalleeSaveXMMRegisters * kFullXMMRegisterSize));
+#endif
+
__ pop(rbx);
#ifdef _WIN64
// Callee save on in Win64 ABI, arguments/volatile in AMD64 ABI.