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      1 
      2 /*---------------------------------------------------------------*/
      3 /*--- begin                                 guest_mips_defs.h ---*/
      4 /*---------------------------------------------------------------*/
      5 
      6 /*
      7    This file is part of Valgrind, a dynamic binary instrumentation
      8    framework.
      9 
     10    Copyright (C) 2010-2012 RT-RK
     11       mips-valgrind (at) rt-rk.com
     12 
     13    This program is free software; you can redistribute it and/or
     14    modify it under the terms of the GNU General Public License as
     15    published by the Free Software Foundation; either version 2 of the
     16    License, or (at your option) any later version.
     17 
     18    This program is distributed in the hope that it will be useful, but
     19    WITHOUT ANY WARRANTY; without even the implied warranty of
     20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     21    General Public License for more details.
     22 
     23    You should have received a copy of the GNU General Public License
     24    along with this program; if not, write to the Free Software
     25    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
     26    02111-1307, USA.
     27 
     28    The GNU General Public License is contained in the file COPYING.
     29 */
     30 
     31 /* Only to be used within the guest-mips directory. */
     32 
     33 #ifndef __VEX_GUEST_MIPS_DEFS_H
     34 #define __VEX_GUEST_MIPS_DEFS_H
     35 
     36 /*---------------------------------------------------------*/
     37 /*--- mips to IR conversion                             ---*/
     38 /*---------------------------------------------------------*/
     39 
     40 /* Convert one MIPS insn to IR.  See the type DisOneInstrFn in
     41    bb_to_IR.h. */
     42 extern DisResult disInstr_MIPS ( IRSB*        irbb,
     43                                  Bool         (*resteerOkFn) (void *, Addr64),
     44                                  Bool         resteerCisOk,
     45                                  void*        callback_opaque,
     46                                  UChar*       guest_code,
     47                                  Long         delta,
     48                                  Addr64       guest_IP,
     49                                  VexArch      guest_arch,
     50                                  VexArchInfo* archinfo,
     51                                  VexAbiInfo*  abiinfo,
     52                                  Bool         host_bigendian );
     53 
     54 /* Used by the optimiser to specialise calls to helpers. */
     55 extern IRExpr *guest_mips32_spechelper(HChar * function_name, IRExpr ** args,
     56                                        IRStmt ** precedingStmts,
     57                                        Int n_precedingStmts);
     58 
     59 /* Describes to the optimser which part of the guest state require
     60    precise memory exceptions.  This is logically part of the guest
     61    state description. */
     62 extern Bool guest_mips32_state_requires_precise_mem_exns(Int, Int);
     63 
     64 extern VexGuestLayout mips32Guest_layout;
     65 
     66 /*---------------------------------------------------------*/
     67 /*--- mips guest helpers                                 ---*/
     68 /*---------------------------------------------------------*/
     69 
     70 extern UInt mips32_dirtyhelper_mfc0(UInt rd, UInt sel);
     71 
     72 extern void mips32_dirtyhelper_sync(UInt sync);
     73 
     74 /*---------------------------------------------------------*/
     75 /*--- Condition code stuff                              ---*/
     76 /*---------------------------------------------------------*/
     77 
     78 /* Defines conditions which we can ask for (MIPS MIPS 2e page A3-6) */
     79 
     80 typedef enum {
     81    MIPSCondEQ = 0,      /* equal                         : Z=1 */
     82    MIPSCondNE = 1,      /* not equal                     : Z=0 */
     83 
     84    MIPSCondHS = 2,      /* >=u (higher or same)          : C=1 */
     85    MIPSCondLO = 3,      /* <u  (lower)                   : C=0 */
     86 
     87    MIPSCondMI = 4,      /* minus (negative)              : N=1 */
     88    MIPSCondPL = 5,      /* plus (zero or +ve)            : N=0 */
     89 
     90    MIPSCondVS = 6,      /* overflow                      : V=1 */
     91    MIPSCondVC = 7,      /* no overflow                   : V=0 */
     92 
     93    MIPSCondHI = 8,      /* >u   (higher)                 : C=1 && Z=0 */
     94    MIPSCondLS = 9,      /* <=u  (lower or same)          : C=0 || Z=1 */
     95 
     96    MIPSCondGE = 10,  /* >=s (signed greater or equal) : N=V */
     97    MIPSCondLT = 11,  /* <s  (signed less than)        : N!=V */
     98 
     99    MIPSCondGT = 12,  /* >s  (signed greater)          : Z=0 && N=V */
    100    MIPSCondLE = 13,  /* <=s (signed less or equal)    : Z=1 || N!=V */
    101 
    102    MIPSCondAL = 14,  /* always (unconditional)        : 1 */
    103    MIPSCondNV = 15      /* never (unconditional):        : 0 */
    104        /* NB: MIPS have deprecated the use of the NV condition code.
    105           You are now supposed to use MOV R0,R0 as a noop rather than
    106           MOVNV R0,R0 as was previously recommended.  Future processors
    107           may have the NV condition code reused to do other things.  */
    108 } MIPSCondcode;
    109 
    110 #endif            /* __VEX_GUEST_MIPS_DEFS_H */
    111 
    112 /*---------------------------------------------------------------*/
    113 /*--- end                                   guest_mips_defs.h ---*/
    114 /*---------------------------------------------------------------*/
    115