// --- pre_write_barrier_compiled
void C1_MacroAssembler::pre_write_barrier_compiled(RInOuts, Register Rtmp0, Register Rtmp1,
RKeepIns, Register Rbase, int off, Register Rindex, int scale, Register Rval,
CodeEmitInfo *info) {
Label retry, safe_to_store;
if (UseSBA) bind(retry); // Come here to retry barrier following an SBA escape
// Perform regular pre write barrier
pre_write_barrier(RInOuts::a, Rtmp0, Rtmp1, RKeepIns::a, Rbase, off, Rindex, scale, Rval, safe_to_store);
if( UseSBA ) {
// SBA escape will update Rbase. Rbase may already have been added to the
// oop map for patching. Force Rbase into oop map.
// NB. this is the last use of the oop map!
info->oop_map()->add((VOopReg::VR)Rbase);
// Full SBA escape - Rtmp0 holds FID of Rbase
// Place args to sba_escape below return address in outgoing stack frame
assert0 (-frame::runtime_stub_frame_size + frame::xPAD == -16)
st8(RSP, -16, Rval);
assert0 (-frame::runtime_stub_frame_size + frame::xRAX == -24)
st8(RSP, -24, Rbase);
call(StubRoutines::x86::sba_escape_handler()); // Do call
assert(info,"oop map expected");
add_oopmap(rel_pc(), info->oop_map()); // Add oop map on return address of call
add_dbg(rel_pc(), info->debug_scope());
jmp (retry);
}
bind(safe_to_store);
}
void DebugInformationRecorder::add_safepoint(int pc_offset, OopMap* map) {
assert(!_oop_recorder->is_complete(), "not frozen yet");
// Store the new safepoint
// Add the oop map
add_oopmap(pc_offset, map);
add_new_pc_offset(pc_offset);
assert(_recording_state == rs_null, "nesting of recording calls");
debug_only(_recording_state = rs_safepoint);
}
