hphp/runtime/vm/jit/code-gen-tls-arm.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2016 Qualcomm Datacenter Technologies, Inc.            |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #pragma once
  18
  19 #include "hphp/runtime/vm/jit/vasm-gen.h"
  20 #include "hphp/runtime/vm/jit/vasm-instr.h"
  21 #include "hphp/runtime/vm/jit/vasm-reg.h"
  22
  23 #include "hphp/util/thread-local.h"
  24
  25 namespace HPHP::jit::arm::detail {
  26
  27 ///////////////////////////////////////////////////////////////////////////////
  28
  29 /*
  30  * See detailed comment in code-gen-tls-x64.h.
  31  */
  32 template<typename T>
  33 Vptr emitTLSAddr(Vout& v, TLSDatum<T> datum) {
  34   uintptr_t vaddr = uintptr_t(datum.tls) - tlsBase();
  35
  36   auto const b = v.makeReg();
  37   v << mrs{vixl::SystemRegister::TPIDR_EL0, b};
  38
  39   return b[vaddr];
  40 }
  41
  42 template<typename T>
  43 Vreg emitTLSLea(Vout& v, TLSDatum<T> datum, int offset) {
  44   auto const b = v.makeReg();
  45   v << lea{detail::emitTLSAddr(v, datum) + offset, b};
  46   return b;
  47 }
  48
  49 ///////////////////////////////////////////////////////////////////////////////
  50
  51 }
  52