JDK14/Java14源码在线阅读

dnl Copyright (c) 2014, Red Hat Inc. All rights reserved.
dnl DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
dnl
dnl This code is free software; you can redistribute it and/or modify it
dnl under the terms of the GNU General Public License version 2 only, as
dnl published by the Free Software Foundation.
dnl
dnl This code is distributed in the hope that it will be useful, but WITHOUT
dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
dnl FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
dnl version 2 for more details (a copy is included in the LICENSE file that
dnl accompanied this code).
dnl
dnl You should have received a copy of the GNU General Public License version
dnl 2 along with this work; if not, write to the Free Software Foundation,
dnl Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
dnl
dnl Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
dnl or visit www.oracle.com if you need additional information or have any
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dnl 
dnl Process this file with m4 ad_encode.m4 to generate the load/store
dnl patterns used in aarch64.ad.
dnl
define(choose, `loadStore($1, &MacroAssembler::$3, $2, $4,
               $5, $6, $7, $8);dnl

  %}')dnl
define(access, `
    $3Register $1_reg = as_$3Register($$1$$reg);
    $4choose(MacroAssembler(&cbuf), $1_reg,$2,$mem->opcode(),
        as_Register($mem$$base),$mem$$index,$mem$$scale,$mem$$disp)')dnl
define(load,`
  enc_class aarch64_enc_$2($1 dst, memory mem) %{dnl
access(dst,$2,$3)')dnl
load(iRegI,ldrsbw)
load(iRegI,ldrsb)
load(iRegI,ldrb)
load(iRegL,ldrb)
load(iRegI,ldrshw)
load(iRegI,ldrsh)
load(iRegI,ldrh)
load(iRegL,ldrh)
load(iRegI,ldrw)
load(iRegL,ldrw)
load(iRegL,ldrsw)
load(iRegL,ldr)
load(vRegF,ldrs,Float)
load(vRegD,ldrd,Float)
define(STORE,`
  enc_class aarch64_enc_$2($1 src, memory mem) %{dnl
access(src,$2,$3,$4)')dnl
define(STORE0,`
  enc_class aarch64_enc_$2`'0(memory mem) %{
    MacroAssembler _masm(&cbuf);
    choose(_masm,zr,$2,$mem->opcode(),
        as_$3Register($mem$$base),$mem$$index,$mem$$scale,$mem$$disp)')dnl
STORE(iRegI,strb)
STORE0(iRegI,strb)
STORE(iRegI,strh)
STORE0(iRegI,strh)
STORE(iRegI,strw)
STORE0(iRegI,strw)
STORE(iRegL,str,,
`// we sometimes get asked to store the stack pointer into the
    // current thread -- we cannot do that directly on AArch64
    if (src_reg == r31_sp) {
      MacroAssembler _masm(&cbuf);
      assert(as_Register($mem$$base) == rthread, "unexpected store for sp");
      __ mov(rscratch2, sp);
      src_reg = rscratch2;
    }
    ')
STORE0(iRegL,str)
STORE(vRegF,strs,Float)
STORE(vRegD,strd,Float)

  enc_class aarch64_enc_strw_immn(immN src, memory mem) %{
    MacroAssembler _masm(&cbuf);
    address con = (address)$src$$constant;
    // need to do this the hard way until we can manage relocs
    // for 32 bit constants
    __ movoop(rscratch2, (jobject)con);
    if (con) __ encode_heap_oop_not_null(rscratch2);
    choose(_masm,rscratch2,strw,$mem->opcode(),
        as_Register($mem$$base),$mem$$index,$mem$$scale,$mem$$disp)

  enc_class aarch64_enc_strw_immnk(immN src, memory mem) %{

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