qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
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iclass.c (2541B)

      1 /*
      2  *  Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
      3  *
      4  *  This program is free software; you can redistribute it and/or modify
      5  *  it under the terms of the GNU General Public License as published by
      6  *  the Free Software Foundation; either version 2 of the License, or
      7  *  (at your option) any later version.
      8  *
      9  *  This program is distributed in the hope that it will be useful,
     10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     12  *  GNU General Public License for more details.
     13  *
     14  *  You should have received a copy of the GNU General Public License
     15  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
     16  */
     17 
     18 #include "qemu/osdep.h"
     19 #include "iclass.h"
     20 
     21 static const SlotMask iclass_info[] = {
     22 
     23 #define DEF_PP_ICLASS32(TYPE, SLOTS, UNITS) \
     24     [ICLASS_FROM_TYPE(TYPE)] = SLOTS_##SLOTS,
     25 #define DEF_EE_ICLASS32(TYPE, SLOTS, UNITS) \
     26     [ICLASS_FROM_TYPE(TYPE)] = SLOTS_##SLOTS,
     27 #include "imported/iclass.def"
     28 #undef DEF_PP_ICLASS32
     29 #undef DEF_EE_ICLASS32
     30 };
     31 
     32 SlotMask find_iclass_slots(Opcode opcode, int itype)
     33 {
     34     /* There are some exceptions to what the iclass dictates */
     35     if (GET_ATTRIB(opcode, A_ICOP)) {
     36         return SLOTS_2;
     37     } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT0ONLY)) {
     38         return SLOTS_0;
     39     } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT1ONLY)) {
     40         return SLOTS_1;
     41     } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT2ONLY)) {
     42         return SLOTS_2;
     43     } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT3ONLY)) {
     44         return SLOTS_3;
     45     } else if (GET_ATTRIB(opcode, A_COF) &&
     46                GET_ATTRIB(opcode, A_INDIRECT) &&
     47                !GET_ATTRIB(opcode, A_MEMLIKE) &&
     48                !GET_ATTRIB(opcode, A_MEMLIKE_PACKET_RULES)) {
     49         return SLOTS_2;
     50     } else if (GET_ATTRIB(opcode, A_RESTRICT_NOSLOT1)) {
     51         return SLOTS_0;
     52     } else if ((opcode == J2_trap0) ||
     53                (opcode == Y2_isync) ||
     54                (opcode == J2_pause) || (opcode == J4_hintjumpr)) {
     55         return SLOTS_2;
     56     } else if (GET_ATTRIB(opcode, A_CRSLOT23)) {
     57         return SLOTS_23;
     58     } else if (GET_ATTRIB(opcode, A_RESTRICT_PREFERSLOT0)) {
     59         return SLOTS_0;
     60     } else if (GET_ATTRIB(opcode, A_SUBINSN)) {
     61         return SLOTS_01;
     62     } else if (GET_ATTRIB(opcode, A_CALL)) {
     63         return SLOTS_23;
     64     } else if ((opcode == J4_jumpseti) || (opcode == J4_jumpsetr)) {
     65         return SLOTS_23;
     66     } else {
     67         return iclass_info[itype];
     68     }
     69 }