address CompiledStaticCall::emit_to_interp_stub(CodeBuffer &cbuf, address mark) {
// Stub is fixed up when the corresponding call is converted from calling
// compiled code to calling interpreted code.
// set (empty), G5
// jmp -1
if (mark == NULL) {
mark = cbuf.insts_mark(); // Get mark within main instrs section.
}
MacroAssembler _masm(&cbuf);
address base = __ start_a_stub(to_interp_stub_size());
if (base == NULL) {
return NULL; // CodeBuffer::expand failed.
}
// Static stub relocation stores the instruction address of the call.
__ relocate(static_stub_Relocation::spec(mark));
__ set_metadata(NULL, as_Register(Matcher::inline_cache_reg_encode()));
__ set_inst_mark();
AddressLiteral addrlit(-1);
__ JUMP(addrlit, G3, 0);
__ delayed()->nop();
assert(__ pc() - base <= to_interp_stub_size(), "wrong stub size");
// Update current stubs pointer and restore code_end.
__ end_a_stub();
return base;
}
void CompiledStaticCall::emit_to_interp_stub(CodeBuffer &cbuf) {
#ifdef COMPILER2
// Stub is fixed up when the corresponding call is converted from calling
// compiled code to calling interpreted code.
// set (empty), G5
// jmp -1
address mark = cbuf.insts_mark(); // Get mark within main instrs section.
MacroAssembler _masm(&cbuf);
address base =
__ start_a_stub(to_interp_stub_size()*2);
if (base == NULL) return; // CodeBuffer::expand failed.
// Static stub relocation stores the instruction address of the call.
__ relocate(static_stub_Relocation::spec(mark));
__ set_metadata(NULL, as_Register(Matcher::inline_cache_reg_encode()));
__ set_inst_mark();
AddressLiteral addrlit(-1);
__ JUMP(addrlit, G3, 0);
__ delayed()->nop();
// Update current stubs pointer and restore code_end.
__ end_a_stub();
#else
ShouldNotReachHere();
#endif
}
address CompiledStaticCall::emit_to_interp_stub(CodeBuffer &cbuf, address mark/* = NULL*/) {
#ifdef COMPILER2
// Stub is fixed up when the corresponding call is converted from calling
// compiled code to calling interpreted code.
if (mark == NULL) {
// Get the mark within main instrs section which is set to the address of the call.
mark = cbuf.insts_mark();
}
assert(mark != NULL, "mark must not be NULL");
// 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);
address stub = __ start_a_stub(Compile::MAX_stubs_size);
if (stub == NULL) {
return NULL; // CodeBuffer::expand failed.
}
__ relocate(static_stub_Relocation::spec(mark));
AddressLiteral meta = __ allocate_metadata_address(NULL);
bool success = __ load_const_from_toc(as_Register(Matcher::inline_cache_reg_encode()), meta);
__ set_inst_mark();
AddressLiteral a((address)-1);
success = success && __ load_const_from_toc(Z_R1, a);
if (!success) {
return NULL; // CodeCache is full.
}
__ z_br(Z_R1);
__ end_a_stub(); // Update current stubs pointer and restore insts_end.
return stub;
#else
ShouldNotReachHere();
#endif
}