arch-arm: Move MiscReg BitUnions into a separate header file

As the number of MiscRegs increases there is the need of a cleaner
header file; this patch is separating miscreg.[cc,hh] where the miscreg
decoding/utility functions are defined/declared from the MiscReg
register types (BitUnion).

Change-Id: I815f53b117b50e47f93aa13d78356ef09d2a2541
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/13065
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

2 files changed, 530 insertions, 478 deletions

diff --git a/src/arch/arm/miscregs.hh b/src/arch/arm/miscregs.hh
index 50e64777c..08d6abfac 100644
--- a/src/arch/arm/miscregs.hh
+++ b/src/arch/arm/miscregs.hh
@@ -46,7 +46,7 @@
 #include <bitset>
 #include <tuple>
 
-#include "base/bitunion.hh"
+#include "arch/arm/miscregs_types.hh"
 #include "base/compiler.hh"
 
 class ThreadContext;
@@ -1416,32 +1416,6 @@ namespace ArmISA
     static_assert(sizeof(miscRegName) / sizeof(*miscRegName) == NUM_MISCREGS,
                   "The miscRegName array and NUM_MISCREGS are inconsistent.");
 
-    BitUnion32(CPSR)
-        Bitfield<31, 30> nz;
-        Bitfield<29> c;
-        Bitfield<28> v;
-        Bitfield<27> q;
-        Bitfield<26, 25> it1;
-        Bitfield<24> j;
-        Bitfield<23, 22> res0_23_22;
-        Bitfield<21> ss;        // AArch64
-        Bitfield<20> il;        // AArch64
-        Bitfield<19, 16> ge;
-        Bitfield<15, 10> it2;
-        Bitfield<9> d;          // AArch64
-        Bitfield<9> e;
-        Bitfield<8> a;
-        Bitfield<7> i;
-        Bitfield<6> f;
-        Bitfield<8, 6> aif;
-        Bitfield<9, 6> daif;    // AArch64
-        Bitfield<5> t;
-        Bitfield<4> width;      // AArch64
-        Bitfield<3, 2> el;      // AArch64
-        Bitfield<4, 0> mode;
-        Bitfield<0> sp;         // AArch64
-    EndBitUnion(CPSR)
-
     // This mask selects bits of the CPSR that actually go in the CondCodes
     // integer register to allow renaming.
     static const uint32_t CondCodesMask   = 0xF00F0000;
@@ -1458,252 +1432,6 @@ namespace ArmISA
     // CPSR (Current Program Status Register Mask).
     static const uint32_t CpsrMask = ApsrMask | 0x00F003DF;
 
-    BitUnion32(HDCR)
-        Bitfield<11>   tdra;
-        Bitfield<10>   tdosa;
-        Bitfield<9>    tda;
-        Bitfield<8>    tde;
-        Bitfield<7>    hpme;
-        Bitfield<6>    tpm;
-        Bitfield<5>    tpmcr;
-        Bitfield<4, 0> hpmn;
-    EndBitUnion(HDCR)
-
-    BitUnion32(HCPTR)
-        Bitfield<31> tcpac;
-        Bitfield<20> tta;
-        Bitfield<15> tase;
-        Bitfield<13> tcp13;
-        Bitfield<12> tcp12;
-        Bitfield<11> tcp11;
-        Bitfield<10> tcp10;
-        Bitfield<10> tfp;  // AArch64
-        Bitfield<9>  tcp9;
-        Bitfield<8>  tcp8;
-        Bitfield<7>  tcp7;
-        Bitfield<6>  tcp6;
-        Bitfield<5>  tcp5;
-        Bitfield<4>  tcp4;
-        Bitfield<3>  tcp3;
-        Bitfield<2>  tcp2;
-        Bitfield<1>  tcp1;
-        Bitfield<0>  tcp0;
-    EndBitUnion(HCPTR)
-
-    BitUnion32(HSTR)
-        Bitfield<17> tjdbx;
-        Bitfield<16> ttee;
-        Bitfield<15> t15;
-        Bitfield<13> t13;
-        Bitfield<12> t12;
-        Bitfield<11> t11;
-        Bitfield<10> t10;
-        Bitfield<9>  t9;
-        Bitfield<8>  t8;
-        Bitfield<7>  t7;
-        Bitfield<6>  t6;
-        Bitfield<5>  t5;
-        Bitfield<4>  t4;
-        Bitfield<3>  t3;
-        Bitfield<2>  t2;
-        Bitfield<1>  t1;
-        Bitfield<0>  t0;
-    EndBitUnion(HSTR)
-
-    BitUnion64(HCR)
-        Bitfield<34>     e2h;   // AArch64
-        Bitfield<33>     id;    // AArch64
-        Bitfield<32>     cd;    // AArch64
-        Bitfield<31>     rw;    // AArch64
-        Bitfield<30>     trvm;  // AArch64
-        Bitfield<29>     hcd;   // AArch64
-        Bitfield<28>     tdz;   // AArch64
-
-        Bitfield<27>     tge;
-        Bitfield<26>     tvm;
-        Bitfield<25>     ttlb;
-        Bitfield<24>     tpu;
-        Bitfield<23>     tpc;
-        Bitfield<22>     tsw;
-        Bitfield<21>     tac;
-        Bitfield<21>     tacr;  // AArch64
-        Bitfield<20>     tidcp;
-        Bitfield<19>     tsc;
-        Bitfield<18>     tid3;
-        Bitfield<17>     tid2;
-        Bitfield<16>     tid1;
-        Bitfield<15>     tid0;
-        Bitfield<14>     twe;
-        Bitfield<13>     twi;
-        Bitfield<12>     dc;
-        Bitfield<11, 10> bsu;
-        Bitfield<9>      fb;
-        Bitfield<8>      va;
-        Bitfield<8>      vse;   // AArch64
-        Bitfield<7>      vi;
-        Bitfield<6>      vf;
-        Bitfield<5>      amo;
-        Bitfield<4>      imo;
-        Bitfield<3>      fmo;
-        Bitfield<2>      ptw;
-        Bitfield<1>      swio;
-        Bitfield<0>      vm;
-    EndBitUnion(HCR)
-
-    BitUnion32(NSACR)
-        Bitfield<20> nstrcdis;
-        Bitfield<19> rfr;
-        Bitfield<15> nsasedis;
-        Bitfield<14> nsd32dis;
-        Bitfield<13> cp13;
-        Bitfield<12> cp12;
-        Bitfield<11> cp11;
-        Bitfield<10> cp10;
-        Bitfield<9>  cp9;
-        Bitfield<8>  cp8;
-        Bitfield<7>  cp7;
-        Bitfield<6>  cp6;
-        Bitfield<5>  cp5;
-        Bitfield<4>  cp4;
-        Bitfield<3>  cp3;
-        Bitfield<2>  cp2;
-        Bitfield<1>  cp1;
-        Bitfield<0>  cp0;
-    EndBitUnion(NSACR)
-
-    BitUnion32(SCR)
-        Bitfield<13> twe;
-        Bitfield<12> twi;
-        Bitfield<11> st;  // AArch64
-        Bitfield<10> rw;  // AArch64
-        Bitfield<9> sif;
-        Bitfield<8> hce;
-        Bitfield<7> scd;
-        Bitfield<7> smd;  // AArch64
-        Bitfield<6> nEt;
-        Bitfield<5> aw;
-        Bitfield<4> fw;
-        Bitfield<3> ea;
-        Bitfield<2> fiq;
-        Bitfield<1> irq;
-        Bitfield<0> ns;
-    EndBitUnion(SCR)
-
-    BitUnion32(SCTLR)
-        Bitfield<30>   te;      // Thumb Exception Enable (AArch32 only)
-        Bitfield<29>   afe;     // Access flag enable (AArch32 only)
-        Bitfield<28>   tre;     // TEX remap enable (AArch32 only)
-        Bitfield<27>   nmfi;    // Non-maskable FIQ support (ARMv7 only)
-        Bitfield<26>   uci;     // Enable EL0 access to DC CVAU, DC CIVAC,
-                                // DC CVAC and IC IVAU instructions
-                                // (AArch64 SCTLR_EL1 only)
-        Bitfield<25>   ee;      // Exception Endianness
-        Bitfield<24>   ve;      // Interrupt Vectors Enable (ARMv7 only)
-        Bitfield<24>   e0e;     // Endianness of explicit data accesses at EL0
-                                // (AArch64 SCTLR_EL1 only)
-        Bitfield<23>   xp;      // Extended page table enable (dropped in ARMv7)
-        Bitfield<22>   u;       // Alignment (dropped in ARMv7)
-        Bitfield<21>   fi;      // Fast interrupts configuration enable
-                                // (ARMv7 only)
-        Bitfield<20>   uwxn;    // Unprivileged write permission implies EL1 XN
-                                // (AArch32 only)
-        Bitfield<19>   dz;      // Divide by Zero fault enable
-                                // (dropped in ARMv7)
-        Bitfield<19>   wxn;     // Write permission implies XN
-        Bitfield<18>   ntwe;    // Not trap WFE
-                                // (ARMv8 AArch32 and AArch64 SCTLR_EL1 only)
-        Bitfield<18>   rao2;    // Read as one
-        Bitfield<16>   ntwi;    // Not trap WFI
-                                // (ARMv8 AArch32 and AArch64 SCTLR_EL1 only)
-        Bitfield<16>   rao3;    // Read as one
-        Bitfield<15>   uct;     // Enable EL0 access to CTR_EL0
-                                // (AArch64 SCTLR_EL1 only)
-        Bitfield<14>   rr;      // Round Robin select (ARMv7 only)
-        Bitfield<14>   dze;     // Enable EL0 access to DC ZVA
-                                // (AArch64 SCTLR_EL1 only)
-        Bitfield<13>   v;       // Vectors bit (AArch32 only)
-        Bitfield<12>   i;       // Instruction cache enable
-        Bitfield<11>   z;       // Branch prediction enable (ARMv7 only)
-        Bitfield<10>   sw;      // SWP/SWPB enable (ARMv7 only)
-        Bitfield<9, 8> rs;      // Deprecated protection bits (dropped in ARMv7)
-        Bitfield<9>    uma;     // User mask access (AArch64 SCTLR_EL1 only)
-        Bitfield<8>    sed;     // SETEND disable
-                                // (ARMv8 AArch32 and AArch64 SCTLR_EL1 only)
-        Bitfield<7>    b;       // Endianness support (dropped in ARMv7)
-        Bitfield<7>    itd;     // IT disable
-                                // (ARMv8 AArch32 and AArch64 SCTLR_EL1 only)
-        Bitfield<6, 3> rao4;    // Read as one
-        Bitfield<6>    thee;    // ThumbEE enable
-                                // (ARMv8 AArch32 and AArch64 SCTLR_EL1 only)
-        Bitfield<5>    cp15ben; // CP15 barrier enable
-                                // (AArch32 and AArch64 SCTLR_EL1 only)
-        Bitfield<4>    sa0;     // Stack Alignment Check Enable for EL0
-                                // (AArch64 SCTLR_EL1 only)
-        Bitfield<3>    sa;      // Stack Alignment Check Enable (AArch64 only)
-        Bitfield<2>    c;       // Cache enable
-        Bitfield<1>    a;       // Alignment check enable
-        Bitfield<0>    m;       // MMU enable
-    EndBitUnion(SCTLR)
-
-    BitUnion32(CPACR)
-        Bitfield<1, 0> cp0;
-        Bitfield<3, 2> cp1;
-        Bitfield<5, 4> cp2;
-        Bitfield<7, 6> cp3;
-        Bitfield<9, 8> cp4;
-        Bitfield<11, 10> cp5;
-        Bitfield<13, 12> cp6;
-        Bitfield<15, 14> cp7;
-        Bitfield<17, 16> cp8;
-        Bitfield<19, 18> cp9;
-        Bitfield<21, 20> cp10;
-        Bitfield<21, 20> fpen;  // AArch64
-        Bitfield<23, 22> cp11;
-        Bitfield<25, 24> cp12;
-        Bitfield<27, 26> cp13;
-        Bitfield<29, 28> rsvd;
-        Bitfield<28> tta;  // AArch64
-        Bitfield<30> d32dis;
-        Bitfield<31> asedis;
-    EndBitUnion(CPACR)
-
-    BitUnion32(FSR)
-        Bitfield<3, 0> fsLow;
-        Bitfield<5, 0> status;  // LPAE
-        Bitfield<7, 4> domain;
-        Bitfield<9> lpae;
-        Bitfield<10> fsHigh;
-        Bitfield<11> wnr;
-        Bitfield<12> ext;
-        Bitfield<13> cm;  // LPAE
-    EndBitUnion(FSR)
-
-    BitUnion32(FPSCR)
-        Bitfield<0> ioc;
-        Bitfield<1> dzc;
-        Bitfield<2> ofc;
-        Bitfield<3> ufc;
-        Bitfield<4> ixc;
-        Bitfield<7> idc;
-        Bitfield<8> ioe;
-        Bitfield<9> dze;
-        Bitfield<10> ofe;
-        Bitfield<11> ufe;
-        Bitfield<12> ixe;
-        Bitfield<15> ide;
-        Bitfield<18, 16> len;
-        Bitfield<21, 20> stride;
-        Bitfield<23, 22> rMode;
-        Bitfield<24> fz;
-        Bitfield<25> dn;
-        Bitfield<26> ahp;
-        Bitfield<27> qc;
-        Bitfield<28> v;
-        Bitfield<29> c;
-        Bitfield<30> z;
-        Bitfield<31> n;
-    EndBitUnion(FPSCR)
-
     // This mask selects bits of the FPSCR that actually go in the FpCondCodes
     // integer register to allow renaming.
     static const uint32_t FpCondCodesMask = 0xF0000000;
@@ -1712,211 +1440,6 @@ namespace ArmISA
     // This mask selects the cumulative saturation flag of the FPSCR.
     static const uint32_t FpscrQcMask = 0x08000000;
 
-    BitUnion32(FPEXC)
-        Bitfield<31> ex;
-        Bitfield<30> en;
-        Bitfield<29, 0> subArchDefined;
-    EndBitUnion(FPEXC)
-
-    BitUnion32(MVFR0)
-        Bitfield<3, 0> advSimdRegisters;
-        Bitfield<7, 4> singlePrecision;
-        Bitfield<11, 8> doublePrecision;
-        Bitfield<15, 12> vfpExceptionTrapping;
-        Bitfield<19, 16> divide;
-        Bitfield<23, 20> squareRoot;
-        Bitfield<27, 24> shortVectors;
-        Bitfield<31, 28> roundingModes;
-    EndBitUnion(MVFR0)
-
-    BitUnion32(MVFR1)
-        Bitfield<3, 0> flushToZero;
-        Bitfield<7, 4> defaultNaN;
-        Bitfield<11, 8> advSimdLoadStore;
-        Bitfield<15, 12> advSimdInteger;
-        Bitfield<19, 16> advSimdSinglePrecision;
-        Bitfield<23, 20> advSimdHalfPrecision;
-        Bitfield<27, 24> vfpHalfPrecision;
-        Bitfield<31, 28> raz;
-    EndBitUnion(MVFR1)
-
-    BitUnion64(TTBCR)
-        // Short-descriptor translation table format
-        Bitfield<2, 0> n;
-        Bitfield<4> pd0;
-        Bitfield<5> pd1;
-        // Long-descriptor translation table format
-        Bitfield<2, 0> t0sz;
-        Bitfield<7> epd0;
-        Bitfield<9, 8> irgn0;
-        Bitfield<11, 10> orgn0;
-        Bitfield<13, 12> sh0;
-        Bitfield<14> tg0;
-        Bitfield<18, 16> t1sz;
-        Bitfield<22> a1;
-        Bitfield<23> epd1;
-        Bitfield<25, 24> irgn1;
-        Bitfield<27, 26> orgn1;
-        Bitfield<29, 28> sh1;
-        Bitfield<30> tg1;
-        Bitfield<34, 32> ips;
-        Bitfield<36> as;
-        Bitfield<37> tbi0;
-        Bitfield<38> tbi1;
-        // Common
-        Bitfield<31> eae;
-        // TCR_EL2/3 (AArch64)
-        Bitfield<18, 16> ps;
-        Bitfield<20> tbi;
-    EndBitUnion(TTBCR)
-
-    // Fields of TCR_EL{1,2,3} (mostly overlapping)
-    // TCR_EL1 is natively 64 bits, the others are 32 bits
-    BitUnion64(TCR)
-        Bitfield<5, 0> t0sz;
-        Bitfield<7> epd0; // EL1
-        Bitfield<9, 8> irgn0;
-        Bitfield<11, 10> orgn0;
-        Bitfield<13, 12> sh0;
-        Bitfield<15, 14> tg0;
-        Bitfield<18, 16> ps;
-        Bitfield<20> tbi; // EL2/EL3
-        Bitfield<21, 16> t1sz; // EL1
-        Bitfield<22> a1; // EL1
-        Bitfield<23> epd1; // EL1
-        Bitfield<25, 24> irgn1; // EL1
-        Bitfield<27, 26> orgn1; // EL1
-        Bitfield<29, 28> sh1; // EL1
-        Bitfield<31, 30> tg1; // EL1
-        Bitfield<34, 32> ips; // EL1
-        Bitfield<36> as; // EL1
-        Bitfield<37> tbi0; // EL1
-        Bitfield<38> tbi1; // EL1
-    EndBitUnion(TCR)
-
-    BitUnion32(HTCR)
-        Bitfield<2, 0> t0sz;
-        Bitfield<9, 8> irgn0;
-        Bitfield<11, 10> orgn0;
-        Bitfield<13, 12> sh0;
-    EndBitUnion(HTCR)
-
-    BitUnion32(VTCR_t)
-        Bitfield<3, 0> t0sz;
-        Bitfield<4> s;
-        Bitfield<5, 0> t0sz64;
-        Bitfield<7, 6> sl0;
-        Bitfield<9, 8> irgn0;
-        Bitfield<11, 10> orgn0;
-        Bitfield<13, 12> sh0;
-        Bitfield<15, 14> tg0;
-        Bitfield<18, 16> ps; // Only defined for VTCR_EL2
-    EndBitUnion(VTCR_t)
-
-    BitUnion32(PRRR)
-       Bitfield<1,0> tr0;
-       Bitfield<3,2> tr1;
-       Bitfield<5,4> tr2;
-       Bitfield<7,6> tr3;
-       Bitfield<9,8> tr4;
-       Bitfield<11,10> tr5;
-       Bitfield<13,12> tr6;
-       Bitfield<15,14> tr7;
-       Bitfield<16> ds0;
-       Bitfield<17> ds1;
-       Bitfield<18> ns0;
-       Bitfield<19> ns1;
-       Bitfield<24> nos0;
-       Bitfield<25> nos1;
-       Bitfield<26> nos2;
-       Bitfield<27> nos3;
-       Bitfield<28> nos4;
-       Bitfield<29> nos5;
-       Bitfield<30> nos6;
-       Bitfield<31> nos7;
-   EndBitUnion(PRRR)
-
-   BitUnion32(NMRR)
-       Bitfield<1,0> ir0;
-       Bitfield<3,2> ir1;
-       Bitfield<5,4> ir2;
-       Bitfield<7,6> ir3;
-       Bitfield<9,8> ir4;
-       Bitfield<11,10> ir5;
-       Bitfield<13,12> ir6;
-       Bitfield<15,14> ir7;
-       Bitfield<17,16> or0;
-       Bitfield<19,18> or1;
-       Bitfield<21,20> or2;
-       Bitfield<23,22> or3;
-       Bitfield<25,24> or4;
-       Bitfield<27,26> or5;
-       Bitfield<29,28> or6;
-       Bitfield<31,30> or7;
-   EndBitUnion(NMRR)
-
-   BitUnion32(CONTEXTIDR)
-      Bitfield<7,0>  asid;
-      Bitfield<31,8> procid;
-   EndBitUnion(CONTEXTIDR)
-
-   BitUnion32(L2CTLR)
-      Bitfield<2,0>   sataRAMLatency;
-      Bitfield<4,3>   reserved_4_3;
-      Bitfield<5>     dataRAMSetup;
-      Bitfield<8,6>   tagRAMLatency;
-      Bitfield<9>     tagRAMSetup;
-      Bitfield<11,10> dataRAMSlice;
-      Bitfield<12>    tagRAMSlice;
-      Bitfield<20,13> reserved_20_13;
-      Bitfield<21>    eccandParityEnable;
-      Bitfield<22>    reserved_22;
-      Bitfield<23>    interptCtrlPresent;
-      Bitfield<25,24> numCPUs;
-      Bitfield<30,26> reserved_30_26;
-      Bitfield<31>    l2rstDISABLE_monitor;
-   EndBitUnion(L2CTLR)
-
-   BitUnion32(CTR)
-      Bitfield<3,0>   iCacheLineSize;
-      Bitfield<13,4>  raz_13_4;
-      Bitfield<15,14> l1IndexPolicy;
-      Bitfield<19,16> dCacheLineSize;
-      Bitfield<23,20> erg;
-      Bitfield<27,24> cwg;
-      Bitfield<28>    raz_28;
-      Bitfield<31,29> format;
-   EndBitUnion(CTR)
-
-   BitUnion32(PMSELR)
-      Bitfield<4, 0> sel;
-   EndBitUnion(PMSELR)
-
-    BitUnion64(PAR)
-        // 64-bit format
-        Bitfield<63, 56> attr;
-        Bitfield<39, 12> pa;
-        Bitfield<11>     lpae;
-        Bitfield<9>      ns;
-        Bitfield<8, 7>   sh;
-        Bitfield<0>      f;
-   EndBitUnion(PAR)
-
-   BitUnion32(ESR)
-        Bitfield<31, 26> ec;
-        Bitfield<25> il;
-        Bitfield<15, 0> imm16;
-   EndBitUnion(ESR)
-
-   BitUnion32(CPTR)
-        Bitfield<31> tcpac;
-        Bitfield<20> tta;
-        Bitfield<13, 12> res1_13_12_el2;
-        Bitfield<10> tfp;
-        Bitfield<9, 0> res1_9_0_el2;
-   EndBitUnion(CPTR)
-
-
     /**
      * Check for permission to read coprocessor registers.
      *
diff --git a/src/arch/arm/miscregs_types.hh b/src/arch/arm/miscregs_types.hh
new file mode 100644
index 000000000..b034ff492
--- /dev/null
+++ b/src/arch/arm/miscregs_types.hh
@@ -0,0 +1,529 @@
+/*
+ * Copyright (c) 2010-2018 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder.  You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
+ * Copyright (c) 2009 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ *          Giacomo Gabrielli
+ */
+
+#ifndef __ARCH_ARM_MISCREGS_TYPES_HH__
+#define __ARCH_ARM_MISCREGS_TYPES_HH__
+
+#include "base/bitunion.hh"
+
+namespace ArmISA
+{
+    BitUnion32(CPSR)
+        Bitfield<31, 30> nz;
+        Bitfield<29> c;
+        Bitfield<28> v;
+        Bitfield<27> q;
+        Bitfield<26, 25> it1;
+        Bitfield<24> j;
+        Bitfield<23, 22> res0_23_22;
+        Bitfield<21> ss;        // AArch64
+        Bitfield<20> il;        // AArch64
+        Bitfield<19, 16> ge;
+        Bitfield<15, 10> it2;
+        Bitfield<9> d;          // AArch64
+        Bitfield<9> e;
+        Bitfield<8> a;
+        Bitfield<7> i;
+        Bitfield<6> f;
+        Bitfield<8, 6> aif;
+        Bitfield<9, 6> daif;    // AArch64
+        Bitfield<5> t;
+        Bitfield<4> width;      // AArch64
+        Bitfield<3, 2> el;      // AArch64
+        Bitfield<4, 0> mode;
+        Bitfield<0> sp;         // AArch64
+    EndBitUnion(CPSR)
+
+    BitUnion32(HDCR)
+        Bitfield<11>   tdra;
+        Bitfield<10>   tdosa;
+        Bitfield<9>    tda;
+        Bitfield<8>    tde;
+        Bitfield<7>    hpme;
+        Bitfield<6>    tpm;
+        Bitfield<5>    tpmcr;
+        Bitfield<4, 0> hpmn;
+    EndBitUnion(HDCR)
+
+    BitUnion32(HCPTR)
+        Bitfield<31> tcpac;
+        Bitfield<20> tta;
+        Bitfield<15> tase;
+        Bitfield<13> tcp13;
+        Bitfield<12> tcp12;
+        Bitfield<11> tcp11;
+        Bitfield<10> tcp10;
+        Bitfield<10> tfp;  // AArch64
+        Bitfield<9>  tcp9;
+        Bitfield<8>  tcp8;
+        Bitfield<7>  tcp7;
+        Bitfield<6>  tcp6;
+        Bitfield<5>  tcp5;
+        Bitfield<4>  tcp4;
+        Bitfield<3>  tcp3;
+        Bitfield<2>  tcp2;
+        Bitfield<1>  tcp1;
+        Bitfield<0>  tcp0;
+    EndBitUnion(HCPTR)
+
+    BitUnion32(HSTR)
+        Bitfield<17> tjdbx;
+        Bitfield<16> ttee;
+        Bitfield<15> t15;
+        Bitfield<13> t13;
+        Bitfield<12> t12;
+        Bitfield<11> t11;
+        Bitfield<10> t10;
+        Bitfield<9>  t9;
+        Bitfield<8>  t8;
+        Bitfield<7>  t7;
+        Bitfield<6>  t6;
+        Bitfield<5>  t5;
+        Bitfield<4>  t4;
+        Bitfield<3>  t3;
+        Bitfield<2>  t2;
+        Bitfield<1>  t1;
+        Bitfield<0>  t0;
+    EndBitUnion(HSTR)
+
+    BitUnion64(HCR)
+        Bitfield<34>     e2h;   // AArch64
+        Bitfield<33>     id;    // AArch64
+        Bitfield<32>     cd;    // AArch64
+        Bitfield<31>     rw;    // AArch64
+        Bitfield<30>     trvm;  // AArch64
+        Bitfield<29>     hcd;   // AArch64
+        Bitfield<28>     tdz;   // AArch64
+
+        Bitfield<27>     tge;
+        Bitfield<26>     tvm;
+        Bitfield<25>     ttlb;
+        Bitfield<24>     tpu;
+        Bitfield<23>     tpc;
+        Bitfield<22>     tsw;
+        Bitfield<21>     tac;
+        Bitfield<21>     tacr;  // AArch64
+        Bitfield<20>     tidcp;
+        Bitfield<19>     tsc;
+        Bitfield<18>     tid3;
+        Bitfield<17>     tid2;
+        Bitfield<16>     tid1;
+        Bitfield<15>     tid0;
+        Bitfield<14>     twe;
+        Bitfield<13>     twi;
+        Bitfield<12>     dc;
+        Bitfield<11, 10> bsu;
+        Bitfield<9>      fb;
+        Bitfield<8>      va;
+        Bitfield<8>      vse;   // AArch64
+        Bitfield<7>      vi;
+        Bitfield<6>      vf;
+        Bitfield<5>      amo;
+        Bitfield<4>      imo;
+        Bitfield<3>      fmo;
+        Bitfield<2>      ptw;
+        Bitfield<1>      swio;
+        Bitfield<0>      vm;
+    EndBitUnion(HCR)
+
+    BitUnion32(NSACR)
+        Bitfield<20> nstrcdis;
+        Bitfield<19> rfr;
+        Bitfield<15> nsasedis;
+        Bitfield<14> nsd32dis;
+        Bitfield<13> cp13;
+        Bitfield<12> cp12;
+        Bitfield<11> cp11;
+        Bitfield<10> cp10;
+        Bitfield<9>  cp9;
+        Bitfield<8>  cp8;
+        Bitfield<7>  cp7;
+        Bitfield<6>  cp6;
+        Bitfield<5>  cp5;
+        Bitfield<4>  cp4;
+        Bitfield<3>  cp3;
+        Bitfield<2>  cp2;
+        Bitfield<1>  cp1;
+        Bitfield<0>  cp0;
+    EndBitUnion(NSACR)
+
+    BitUnion32(SCR)
+        Bitfield<13> twe;
+        Bitfield<12> twi;
+        Bitfield<11> st;  // AArch64
+        Bitfield<10> rw;  // AArch64
+        Bitfield<9> sif;
+        Bitfield<8> hce;
+        Bitfield<7> scd;
+        Bitfield<7> smd;  // AArch64
+        Bitfield<6> nEt;
+        Bitfield<5> aw;
+        Bitfield<4> fw;
+        Bitfield<3> ea;
+        Bitfield<2> fiq;
+        Bitfield<1> irq;
+        Bitfield<0> ns;
+    EndBitUnion(SCR)
+
+    BitUnion32(SCTLR)
+        Bitfield<30>   te;      // Thumb Exception Enable (AArch32 only)
+        Bitfield<29>   afe;     // Access flag enable (AArch32 only)
+        Bitfield<28>   tre;     // TEX remap enable (AArch32 only)
+        Bitfield<27>   nmfi;    // Non-maskable FIQ support (ARMv7 only)
+        Bitfield<26>   uci;     // Enable EL0 access to DC CVAU, DC CIVAC,
+                                // DC CVAC and IC IVAU instructions
+                                // (AArch64 SCTLR_EL1 only)
+        Bitfield<25>   ee;      // Exception Endianness
+        Bitfield<24>   ve;      // Interrupt Vectors Enable (ARMv7 only)
+        Bitfield<24>   e0e;     // Endianness of explicit data accesses at EL0
+                                // (AArch64 SCTLR_EL1 only)
+        Bitfield<23>   xp;      // Extended page table enable (dropped in ARMv7)
+        Bitfield<22>   u;       // Alignment (dropped in ARMv7)
+        Bitfield<21>   fi;      // Fast interrupts configuration enable
+                                // (ARMv7 only)
+        Bitfield<20>   uwxn;    // Unprivileged write permission implies EL1 XN
+                                // (AArch32 only)
+        Bitfield<19>   dz;      // Divide by Zero fault enable
+                                // (dropped in ARMv7)
+        Bitfield<19>   wxn;     // Write permission implies XN
+        Bitfield<18>   ntwe;    // Not trap WFE
+                                // (ARMv8 AArch32 and AArch64 SCTLR_EL1 only)
+        Bitfield<18>   rao2;    // Read as one
+        Bitfield<16>   ntwi;    // Not trap WFI
+                                // (ARMv8 AArch32 and AArch64 SCTLR_EL1 only)
+        Bitfield<16>   rao3;    // Read as one
+        Bitfield<15>   uct;     // Enable EL0 access to CTR_EL0
+                                // (AArch64 SCTLR_EL1 only)
+        Bitfield<14>   rr;      // Round Robin select (ARMv7 only)
+        Bitfield<14>   dze;     // Enable EL0 access to DC ZVA
+                                // (AArch64 SCTLR_EL1 only)
+        Bitfield<13>   v;       // Vectors bit (AArch32 only)
+        Bitfield<12>   i;       // Instruction cache enable
+        Bitfield<11>   z;       // Branch prediction enable (ARMv7 only)
+        Bitfield<10>   sw;      // SWP/SWPB enable (ARMv7 only)
+        Bitfield<9, 8> rs;      // Deprecated protection bits (dropped in ARMv7)
+        Bitfield<9>    uma;     // User mask access (AArch64 SCTLR_EL1 only)
+        Bitfield<8>    sed;     // SETEND disable
+                                // (ARMv8 AArch32 and AArch64 SCTLR_EL1 only)
+        Bitfield<7>    b;       // Endianness support (dropped in ARMv7)
+        Bitfield<7>    itd;     // IT disable
+                                // (ARMv8 AArch32 and AArch64 SCTLR_EL1 only)
+        Bitfield<6, 3> rao4;    // Read as one
+        Bitfield<6>    thee;    // ThumbEE enable
+                                // (ARMv8 AArch32 and AArch64 SCTLR_EL1 only)
+        Bitfield<5>    cp15ben; // CP15 barrier enable
+                                // (AArch32 and AArch64 SCTLR_EL1 only)
+        Bitfield<4>    sa0;     // Stack Alignment Check Enable for EL0
+                                // (AArch64 SCTLR_EL1 only)
+        Bitfield<3>    sa;      // Stack Alignment Check Enable (AArch64 only)
+        Bitfield<2>    c;       // Cache enable
+        Bitfield<1>    a;       // Alignment check enable
+        Bitfield<0>    m;       // MMU enable
+    EndBitUnion(SCTLR)
+
+    BitUnion32(CPACR)
+        Bitfield<1, 0> cp0;
+        Bitfield<3, 2> cp1;
+        Bitfield<5, 4> cp2;
+        Bitfield<7, 6> cp3;
+        Bitfield<9, 8> cp4;
+        Bitfield<11, 10> cp5;
+        Bitfield<13, 12> cp6;
+        Bitfield<15, 14> cp7;
+        Bitfield<17, 16> cp8;
+        Bitfield<19, 18> cp9;
+        Bitfield<21, 20> cp10;
+        Bitfield<21, 20> fpen;  // AArch64
+        Bitfield<23, 22> cp11;
+        Bitfield<25, 24> cp12;
+        Bitfield<27, 26> cp13;
+        Bitfield<29, 28> rsvd;
+        Bitfield<28> tta;  // AArch64
+        Bitfield<30> d32dis;
+        Bitfield<31> asedis;
+    EndBitUnion(CPACR)
+
+    BitUnion32(FSR)
+        Bitfield<3, 0> fsLow;
+        Bitfield<5, 0> status;  // LPAE
+        Bitfield<7, 4> domain;
+        Bitfield<9> lpae;
+        Bitfield<10> fsHigh;
+        Bitfield<11> wnr;
+        Bitfield<12> ext;
+        Bitfield<13> cm;  // LPAE
+    EndBitUnion(FSR)
+
+    BitUnion32(FPSCR)
+        Bitfield<0> ioc;
+        Bitfield<1> dzc;
+        Bitfield<2> ofc;
+        Bitfield<3> ufc;
+        Bitfield<4> ixc;
+        Bitfield<7> idc;
+        Bitfield<8> ioe;
+        Bitfield<9> dze;
+        Bitfield<10> ofe;
+        Bitfield<11> ufe;
+        Bitfield<12> ixe;
+        Bitfield<15> ide;
+        Bitfield<18, 16> len;
+        Bitfield<21, 20> stride;
+        Bitfield<23, 22> rMode;
+        Bitfield<24> fz;
+        Bitfield<25> dn;
+        Bitfield<26> ahp;
+        Bitfield<27> qc;
+        Bitfield<28> v;
+        Bitfield<29> c;
+        Bitfield<30> z;
+        Bitfield<31> n;
+    EndBitUnion(FPSCR)
+
+    BitUnion32(FPEXC)
+        Bitfield<31> ex;
+        Bitfield<30> en;
+        Bitfield<29, 0> subArchDefined;
+    EndBitUnion(FPEXC)
+
+    BitUnion32(MVFR0)
+        Bitfield<3, 0> advSimdRegisters;
+        Bitfield<7, 4> singlePrecision;
+        Bitfield<11, 8> doublePrecision;
+        Bitfield<15, 12> vfpExceptionTrapping;
+        Bitfield<19, 16> divide;
+        Bitfield<23, 20> squareRoot;
+        Bitfield<27, 24> shortVectors;
+        Bitfield<31, 28> roundingModes;
+    EndBitUnion(MVFR0)
+
+    BitUnion32(MVFR1)
+        Bitfield<3, 0> flushToZero;
+        Bitfield<7, 4> defaultNaN;
+        Bitfield<11, 8> advSimdLoadStore;
+        Bitfield<15, 12> advSimdInteger;
+        Bitfield<19, 16> advSimdSinglePrecision;
+        Bitfield<23, 20> advSimdHalfPrecision;
+        Bitfield<27, 24> vfpHalfPrecision;
+        Bitfield<31, 28> raz;
+    EndBitUnion(MVFR1)
+
+    BitUnion64(TTBCR)
+        // Short-descriptor translation table format
+        Bitfield<2, 0> n;
+        Bitfield<4> pd0;
+        Bitfield<5> pd1;
+        // Long-descriptor translation table format
+        Bitfield<2, 0> t0sz;
+        Bitfield<7> epd0;
+        Bitfield<9, 8> irgn0;
+        Bitfield<11, 10> orgn0;
+        Bitfield<13, 12> sh0;
+        Bitfield<14> tg0;
+        Bitfield<18, 16> t1sz;
+        Bitfield<22> a1;
+        Bitfield<23> epd1;
+        Bitfield<25, 24> irgn1;
+        Bitfield<27, 26> orgn1;
+        Bitfield<29, 28> sh1;
+        Bitfield<30> tg1;
+        Bitfield<34, 32> ips;
+        Bitfield<36> as;
+        Bitfield<37> tbi0;
+        Bitfield<38> tbi1;
+        // Common
+        Bitfield<31> eae;
+        // TCR_EL2/3 (AArch64)
+        Bitfield<18, 16> ps;
+        Bitfield<20> tbi;
+    EndBitUnion(TTBCR)
+
+    // Fields of TCR_EL{1,2,3} (mostly overlapping)
+    // TCR_EL1 is natively 64 bits, the others are 32 bits
+    BitUnion64(TCR)
+        Bitfield<5, 0> t0sz;
+        Bitfield<7> epd0; // EL1
+        Bitfield<9, 8> irgn0;
+        Bitfield<11, 10> orgn0;
+        Bitfield<13, 12> sh0;
+        Bitfield<15, 14> tg0;
+        Bitfield<18, 16> ps;
+        Bitfield<20> tbi; // EL2/EL3
+        Bitfield<21, 16> t1sz; // EL1
+        Bitfield<22> a1; // EL1
+        Bitfield<23> epd1; // EL1
+        Bitfield<25, 24> irgn1; // EL1
+        Bitfield<27, 26> orgn1; // EL1
+        Bitfield<29, 28> sh1; // EL1
+        Bitfield<31, 30> tg1; // EL1
+        Bitfield<34, 32> ips; // EL1
+        Bitfield<36> as; // EL1
+        Bitfield<37> tbi0; // EL1
+        Bitfield<38> tbi1; // EL1
+    EndBitUnion(TCR)
+
+    BitUnion32(HTCR)
+        Bitfield<2, 0> t0sz;
+        Bitfield<9, 8> irgn0;
+        Bitfield<11, 10> orgn0;
+        Bitfield<13, 12> sh0;
+    EndBitUnion(HTCR)
+
+    BitUnion32(VTCR_t)
+        Bitfield<3, 0> t0sz;
+        Bitfield<4> s;
+        Bitfield<5, 0> t0sz64;
+        Bitfield<7, 6> sl0;
+        Bitfield<9, 8> irgn0;
+        Bitfield<11, 10> orgn0;
+        Bitfield<13, 12> sh0;
+        Bitfield<15, 14> tg0;
+        Bitfield<18, 16> ps; // Only defined for VTCR_EL2
+    EndBitUnion(VTCR_t)
+
+    BitUnion32(PRRR)
+       Bitfield<1,0> tr0;
+       Bitfield<3,2> tr1;
+       Bitfield<5,4> tr2;
+       Bitfield<7,6> tr3;
+       Bitfield<9,8> tr4;
+       Bitfield<11,10> tr5;
+       Bitfield<13,12> tr6;
+       Bitfield<15,14> tr7;
+       Bitfield<16> ds0;
+       Bitfield<17> ds1;
+       Bitfield<18> ns0;
+       Bitfield<19> ns1;
+       Bitfield<24> nos0;
+       Bitfield<25> nos1;
+       Bitfield<26> nos2;
+       Bitfield<27> nos3;
+       Bitfield<28> nos4;
+       Bitfield<29> nos5;
+       Bitfield<30> nos6;
+       Bitfield<31> nos7;
+   EndBitUnion(PRRR)
+
+   BitUnion32(NMRR)
+       Bitfield<1,0> ir0;
+       Bitfield<3,2> ir1;
+       Bitfield<5,4> ir2;
+       Bitfield<7,6> ir3;
+       Bitfield<9,8> ir4;
+       Bitfield<11,10> ir5;
+       Bitfield<13,12> ir6;
+       Bitfield<15,14> ir7;
+       Bitfield<17,16> or0;
+       Bitfield<19,18> or1;
+       Bitfield<21,20> or2;
+       Bitfield<23,22> or3;
+       Bitfield<25,24> or4;
+       Bitfield<27,26> or5;
+       Bitfield<29,28> or6;
+       Bitfield<31,30> or7;
+   EndBitUnion(NMRR)
+
+   BitUnion32(CONTEXTIDR)
+      Bitfield<7,0>  asid;
+      Bitfield<31,8> procid;
+   EndBitUnion(CONTEXTIDR)
+
+   BitUnion32(L2CTLR)
+      Bitfield<2,0>   sataRAMLatency;
+      Bitfield<4,3>   reserved_4_3;
+      Bitfield<5>     dataRAMSetup;
+      Bitfield<8,6>   tagRAMLatency;
+      Bitfield<9>     tagRAMSetup;
+      Bitfield<11,10> dataRAMSlice;
+      Bitfield<12>    tagRAMSlice;
+      Bitfield<20,13> reserved_20_13;
+      Bitfield<21>    eccandParityEnable;
+      Bitfield<22>    reserved_22;
+      Bitfield<23>    interptCtrlPresent;
+      Bitfield<25,24> numCPUs;
+      Bitfield<30,26> reserved_30_26;
+      Bitfield<31>    l2rstDISABLE_monitor;
+   EndBitUnion(L2CTLR)
+
+   BitUnion32(CTR)
+      Bitfield<3,0>   iCacheLineSize;
+      Bitfield<13,4>  raz_13_4;
+      Bitfield<15,14> l1IndexPolicy;
+      Bitfield<19,16> dCacheLineSize;
+      Bitfield<23,20> erg;
+      Bitfield<27,24> cwg;
+      Bitfield<28>    raz_28;
+      Bitfield<31,29> format;
+   EndBitUnion(CTR)
+
+   BitUnion32(PMSELR)
+      Bitfield<4, 0> sel;
+   EndBitUnion(PMSELR)
+
+    BitUnion64(PAR)
+        // 64-bit format
+        Bitfield<63, 56> attr;
+        Bitfield<39, 12> pa;
+        Bitfield<11>     lpae;
+        Bitfield<9>      ns;
+        Bitfield<8, 7>   sh;
+        Bitfield<0>      f;
+   EndBitUnion(PAR)
+
+   BitUnion32(ESR)
+        Bitfield<31, 26> ec;
+        Bitfield<25> il;
+        Bitfield<15, 0> imm16;
+   EndBitUnion(ESR)
+
+   BitUnion32(CPTR)
+        Bitfield<31> tcpac;
+        Bitfield<20> tta;
+        Bitfield<13, 12> res1_13_12_el2;
+        Bitfield<10> tfp;
+        Bitfield<9, 0> res1_9_0_el2;
+   EndBitUnion(CPTR)
+
+}
+
+#endif // __ARCH_ARM_MISCREGS_TYPES_HH__