TCA emit_bindjcc1st_stub(CodeBlock& cb, FPInvOffset spOff, TCA jcc,
SrcKey taken, SrcKey next, ConditionCode cc) {
always_assert_flog(taken.resumed() == next.resumed(),
"bind_jcc_1st was confused about resumables");
return emit_ephemeral(
cb,
mcg->getFreeStub(cb, &mcg->cgFixups()),
taken.resumed() ? folly::none : folly::make_optional(spOff),
REQ_BIND_JCC_FIRST,
jcc,
taken.toAtomicInt(),
next.toAtomicInt(),
cc
);
}
void emitBindJ(CodeBlock& cb, CodeBlock& frozen, ConditionCode cc,
SrcKey dest) {
TCA toSmash = cb.frontier();
if (cb.base() == frozen.base()) {
// This is just to reserve space. We'll overwrite with the real dest later.
mcg->backEnd().emitSmashableJump(cb, toSmash, cc);
}
mcg->setJmpTransID(toSmash);
TCA sr = emitEphemeralServiceReq(
frozen,
mcg->getFreeStub(frozen, &mcg->cgFixups()),
folly::none,
REQ_BIND_JMP,
toSmash,
dest.toAtomicInt(),
TransFlags{}.packed
);
MacroAssembler a { cb };
if (cb.base() == frozen.base()) {
UndoMarker um {cb};
cb.setFrontier(toSmash);
mcg->backEnd().emitSmashableJump(cb, sr, cc);
um.undo();
} else {
mcg->backEnd().emitSmashableJump(cb, sr, cc);
}
}
TCA emit_retranslate_opt_stub(CodeBlock& cb, FPInvOffset spOff,
SrcKey target, TransID transID) {
return emit_persistent(
cb,
target.resumed() ? folly::none : folly::make_optional(spOff),
REQ_RETRANSLATE_OPT,
target.toAtomicInt(),
transID
);
}
TCA emit_bindaddr_stub(CodeBlock& cb, FPInvOffset spOff, TCA* addr,
SrcKey target, TransFlags trflags) {
return emit_ephemeral(
cb,
mcg->getFreeStub(cb, &mcg->cgFixups()),
target.resumed() ? folly::none : folly::make_optional(spOff),
REQ_BIND_ADDR,
addr,
target.toAtomicInt(),
trflags.packed
);
}