// Inform CodeBuffer that incoming code and relocation will be for stubs
address AbstractAssembler::start_a_stub(int required_space) {
CodeBuffer* cb = code();
CodeSection* cs = cb->stubs();
assert(_code_section == cb->insts(), "not in insts?");
if (cs->maybe_expand_to_ensure_remaining(required_space)
&& cb->blob() == NULL) {
return NULL;
}
set_code_section(cs);
return pc();
}
// Inform CodeBuffer that incoming code and relocation will be for stubs
address AbstractAssembler::start_a_const(int required_space, int required_align) {
CodeBuffer* cb = code();
CodeSection* cs = cb->consts();
assert(_code_section == cb->insts() || _code_section == cb->stubs(), "not in insts/stubs?");
address end = cs->end();
int pad = -(intptr_t)end & (required_align-1);
if (cs->maybe_expand_to_ensure_remaining(pad + required_space)) {
if (cb->blob() == NULL) return NULL;
end = cs->end(); // refresh pointer
}
if (pad > 0) {
while (--pad >= 0) { *end++ = 0; }
cs->set_end(end);
}
set_code_section(cs);
return end;
}
// Inform CodeBuffer that incoming code and relocation will be code
// Should not be called if start_a_stub() returned NULL
void AbstractAssembler::end_a_stub() {
assert(_code_section == code()->stubs(), "not in stubs?");
set_code_section(code()->insts());
}
// Inform CodeBuffer that incoming code and relocation will be code
// in section cs (insts or stubs).
void AbstractAssembler::end_a_const(CodeSection* cs) {
assert(_code_section == code()->consts(), "not in consts?");
set_code_section(cs);
}
// Inform CodeBuffer that incoming code and relocation will be code
// Should not be called if start_a_const() returned NULL
void AbstractAssembler::end_a_const() {
assert(_code_section == code()->consts(), "not in consts?");
sync();
set_code_section(code()->insts());
}