void C1_MacroAssembler::inline_cache_check(Register receiver, Register iCache) {
const Register temp_reg = R12_scratch2;
verify_oop(receiver);
load_klass(temp_reg, receiver);
if (TrapBasedICMissChecks) {
trap_ic_miss_check(temp_reg, iCache);
} else {
Label L;
cmpd(CCR0, temp_reg, iCache);
beq(CCR0, L);
//load_const_optimized(temp_reg, SharedRuntime::get_ic_miss_stub(), R0);
calculate_address_from_global_toc(temp_reg, SharedRuntime::get_ic_miss_stub(), true, true, false);
mtctr(temp_reg);
bctr();
align(32, 12);
bind(L);
}
}
inline void calculate_address_from_global_toc_hi16only(Register dst, address addr) {
calculate_address_from_global_toc(dst, addr, true, false);
};
address CompiledStaticCall::emit_to_interp_stub(CodeBuffer &cbuf, address mark/* = NULL*/) {
#ifdef COMPILER2
if (mark == NULL) {
// Get the mark within main instrs section which is set to the address of the call.
mark = cbuf.insts_mark();
}
// Note that the code buffer's insts_mark is always relative to insts.
// That's why we must use the macroassembler to generate a stub.
MacroAssembler _masm(&cbuf);
// Start the stub.
address stub = __ start_a_stub(CompiledStaticCall::to_interp_stub_size());
if (stub == NULL) {
return NULL; // CodeCache is full
}
// For java_to_interp stubs we use R11_scratch1 as scratch register
// and in call trampoline stubs we use R12_scratch2. This way we
// can distinguish them (see is_NativeCallTrampolineStub_at()).
Register reg_scratch = R11_scratch1;
// Create a static stub relocation which relates this stub
// with the call instruction at insts_call_instruction_offset in the
// instructions code-section.
__ relocate(static_stub_Relocation::spec(mark));
const int stub_start_offset = __ offset();
// Now, create the stub's code:
// - load the TOC
// - load the inline cache oop from the constant pool
// - load the call target from the constant pool
// - call
__ calculate_address_from_global_toc(reg_scratch, __ method_toc());
AddressLiteral ic = __ allocate_metadata_address((Metadata *)NULL);
bool success = __ load_const_from_method_toc(as_Register(Matcher::inline_cache_reg_encode()),
ic, reg_scratch, /*fixed_size*/ true);
if (!success) {
return NULL; // CodeCache is full
}
if (ReoptimizeCallSequences) {
__ b64_patchable((address)-1, relocInfo::none);
} else {
AddressLiteral a((address)-1);
success = __ load_const_from_method_toc(reg_scratch, a, reg_scratch, /*fixed_size*/ true);
if (!success) {
return NULL; // CodeCache is full
}
__ mtctr(reg_scratch);
__ bctr();
}
// FIXME: Assert that the stub can be identified and patched.
// Java_to_interp_stub_size should be good.
assert((__ offset() - stub_start_offset) <= CompiledStaticCall::to_interp_stub_size(),
"should be good size");
assert(!is_NativeCallTrampolineStub_at(__ addr_at(stub_start_offset)),
"must not confuse java_to_interp with trampoline stubs");
// End the stub.
__ end_a_stub();
return stub;
#else
ShouldNotReachHere();
return NULL;
#endif
}
