util/m5/src/aarch64/m5op.S

   1 /*
   2  * Copyright (c) 2010-2013, 2016-2017 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Copyright (c) 2003-2006 The Regents of The University of Michigan
  15  * All rights reserved.
  16  *
  17  * Redistribution and use in source and binary forms, with or without
  18  * modification, are permitted provided that the following conditions are
  19  * met: redistributions of source code must retain the above copyright
  20  * notice, this list of conditions and the following disclaimer;
  21  * redistributions in binary form must reproduce the above copyright
  22  * notice, this list of conditions and the following disclaimer in the
  23  * documentation and/or other materials provided with the distribution;
  24  * neither the name of the copyright holders nor the names of its
  25  * contributors may be used to endorse or promote products derived from
  26  * this software without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  31  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  32  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  33  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  34  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  35  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  36  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  37  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  38  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  39  */
  40
  41 #include <gem5/asm/generic/m5ops.h>
  42
  43 #ifdef M5OP_ADDR
  44 .macro  m5op_func, name, func
  45         .globl \name
  46         \name:
  47         // Load the value of m5_mem into x9...
  48 #if defined(M5OP_PIC)
  49         // using the global offset table.
  50         adrp x9, :got:m5_mem
  51         ldr x9, [ x9, #:got_lo12:m5_mem ]
  52         ldr x9, [ x9 ]
  53 #else
  54         // normally.
  55         adrp x9, m5_mem
  56         ldr x9, [ x9, #:lo12:m5_mem ]
  57 #endif
  58         movz x10, #(\func << 8)
  59         ldr x0, [ x9, x10 ]
  60         ret
  61 .endm
  62 #else
  63 .macro  m5op_func, name, func
  64         .globl \name
  65         \name:
  66         .long 0xff000110 | (\func << 16)
  67         ret
  68 .endm
  69 #endif
  70
  71 .text
  72 #define M5OP(name, func) m5op_func name, func
  73         M5OP_FOREACH
  74 #undef M5OP