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/*
* Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "asm/assembler.hpp"
#include "assembler_x86.inline.hpp"
#include "runtime/os.hpp"
#include "runtime/threadLocalStorage.hpp"
void MacroAssembler::int3() {
push(rax);
push(rdx);
push(rcx);
call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
pop(rcx);
pop(rdx);
pop(rax);
}
#define __ _masm->
#ifndef _LP64
static void slow_call_thr_specific(MacroAssembler* _masm, Register thread) {
// slow call to of thr_getspecific
// int thr_getspecific(thread_key_t key, void **value);
// Consider using pthread_getspecific instead.
__ push(0); // allocate space for return value
if (thread != rax) __ push(rax); // save rax, if caller still wants it
__ push(rcx); // save caller save
__ push(rdx); // save caller save
if (thread != rax) {
__ lea(thread, Address(rsp, 3 * sizeof(int))); // address of return value
} else {
__ lea(thread, Address(rsp, 2 * sizeof(int))); // address of return value
}
__ push(thread); // and pass the address
__ push(ThreadLocalStorage::thread_index()); // the key
__ call(RuntimeAddress(CAST_FROM_FN_PTR(address, thr_getspecific)));
__ increment(rsp, 2 * wordSize);
__ pop(rdx);
__ pop(rcx);
if (thread != rax) __ pop(rax);
__ pop(thread);
}
#else
static void slow_call_thr_specific(MacroAssembler* _masm, Register thread) {
// slow call to of thr_getspecific
// int thr_getspecific(thread_key_t key, void **value);
// Consider using pthread_getspecific instead.
if (thread != rax) {
__ push(rax);
}
__ push(0); // space for return value
__ push(rdi);
__ push(rsi);
__ lea(rsi, Address(rsp, 16)); // pass return value address
__ push(rdx);
__ push(rcx);
__ push(r8);
__ push(r9);
__ push(r10);
// XXX
__ mov(r10, rsp);
__ andptr(rsp, -16);
__ push(r10);
__ push(r11);
__ movl(rdi, ThreadLocalStorage::thread_index());
__ call(RuntimeAddress(CAST_FROM_FN_PTR(address, thr_getspecific)));
__ pop(r11);
__ pop(rsp);
__ pop(r10);
__ pop(r9);
__ pop(r8);
__ pop(rcx);
__ pop(rdx);
__ pop(rsi);
__ pop(rdi);
__ pop(thread); // load return value
if (thread != rax) {
__ pop(rax);
}
}
#endif //LP64
void MacroAssembler::get_thread(Register thread) {
int segment = NOT_LP64(Assembler::GS_segment) LP64_ONLY(Assembler::FS_segment);
// Try to emit a Solaris-specific fast TSD/TLS accessor.
ThreadLocalStorage::pd_tlsAccessMode tlsMode = ThreadLocalStorage::pd_getTlsAccessMode ();
if (tlsMode == ThreadLocalStorage::pd_tlsAccessIndirect) { // T1
// Use thread as a temporary: mov r, gs:[0]; mov r, [r+tlsOffset]
emit_byte (segment);
// ExternalAddress doesn't work because it can't take NULL
AddressLiteral null(0, relocInfo::none);
movptr (thread, null);
movptr(thread, Address(thread, ThreadLocalStorage::pd_getTlsOffset())) ;
return ;
} else
if (tlsMode == ThreadLocalStorage::pd_tlsAccessDirect) { // T2
// mov r, gs:[tlsOffset]
emit_byte (segment);
AddressLiteral tls_off((address)ThreadLocalStorage::pd_getTlsOffset(), relocInfo::none);
movptr (thread, tls_off);
return ;
}
slow_call_thr_specific(this, thread);
}
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