7061197: ThreadLocalStorage sp map table should be optional
Reviewed-by: dholmes, never, jwilhelm, kvn
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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* questions.
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*/
#include "precompiled.hpp"
#include "asm/assembler.hpp"
#include "assembler_x86.inline.hpp"
#include "runtime/os.hpp"
#include "runtime/threadLocalStorage.hpp"
#ifndef _LP64
void MacroAssembler::int3() {
call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
}
#ifdef MINIMIZE_RAM_USAGE
void MacroAssembler::get_thread(Register thread) {
// call pthread_getspecific
// void * pthread_getspecific(pthread_key_t key);
if (thread != rax) push(rax);
push(rcx);
push(rdx);
push(ThreadLocalStorage::thread_index());
call(RuntimeAddress(CAST_FROM_FN_PTR(address, pthread_getspecific)));
increment(rsp, wordSize);
pop(rdx);
pop(rcx);
if (thread != rax) {
mov(thread, rax);
pop(rax);
}
}
#else
void MacroAssembler::get_thread(Register thread) {
movl(thread, rsp);
shrl(thread, PAGE_SHIFT);
ExternalAddress tls_base((address)ThreadLocalStorage::sp_map_addr());
Address index(noreg, thread, Address::times_4);
ArrayAddress tls(tls_base, index);
movptr(thread, tls);
}
#endif // MINIMIZE_RAM_USAGE
#else
void MacroAssembler::int3() {
call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
}
void MacroAssembler::get_thread(Register thread) {
// call pthread_getspecific
// void * pthread_getspecific(pthread_key_t key);
if (thread != rax) {
push(rax);
}
push(rdi);
push(rsi);
push(rdx);
push(rcx);
push(r8);
push(r9);
push(r10);
// XXX
mov(r10, rsp);
andq(rsp, -16);
push(r10);
push(r11);
movl(rdi, ThreadLocalStorage::thread_index());
call(RuntimeAddress(CAST_FROM_FN_PTR(address, pthread_getspecific)));
pop(r11);
pop(rsp);
pop(r10);
pop(r9);
pop(r8);
pop(rcx);
pop(rdx);
pop(rsi);
pop(rdi);
if (thread != rax) {
mov(thread, rax);
pop(rax);
}
}
#endif