/*
* Satisfy an alignment constraint. Bridge the gap with int3's.
*/
void moveToAlign(CodeBlock& cb,
const size_t align /* =kJmpTargetAlign */) {
X64Assembler a { cb };
assertx(folly::isPowTwo(align));
size_t leftInBlock = align - ((align - 1) & uintptr_t(cb.frontier()));
if (leftInBlock == align) return;
if (leftInBlock > 2) {
a.ud2();
leftInBlock -= 2;
}
if (leftInBlock > 0) {
a.emitInt3s(leftInBlock);
}
}
/*
* Satisfy an alignment constraint. Bridge the gap with int3's.
*/
void moveToAlign(CodeBlock& cb,
const size_t align /* =kJmpTargetAlign */) {
// TODO(2967396) implement properly, move function
if (arch() == Arch::ARM) return;
using namespace HPHP::Util;
X64Assembler a { cb };
assert(isPowerOfTwo(align));
size_t leftInBlock = align - ((align - 1) & uintptr_t(cb.frontier()));
if (leftInBlock == align) return;
if (leftInBlock > 2) {
a.ud2();
leftInBlock -= 2;
}
if (leftInBlock > 0) {
a.emitInt3s(leftInBlock);
}
}
