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/*
* Copyright (c) 2010 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
*/
#ifndef __ARCH_ARM_MISCREGS_HH__
#define __ARCH_ARM_MISCREGS_HH__
#include "base/bitunion.hh"
namespace ArmISA
{
enum ConditionCode {
COND_EQ = 0,
COND_NE, // 1
COND_CS, // 2
COND_CC, // 3
COND_MI, // 4
COND_PL, // 5
COND_VS, // 6
COND_VC, // 7
COND_HI, // 8
COND_LS, // 9
COND_GE, // 10
COND_LT, // 11
COND_GT, // 12
COND_LE, // 13
COND_AL, // 14
COND_UC // 15
};
enum MiscRegIndex {
MISCREG_CPSR = 0,
MISCREG_SPSR,
MISCREG_SPSR_FIQ,
MISCREG_SPSR_IRQ,
MISCREG_SPSR_SVC,
MISCREG_SPSR_MON,
MISCREG_SPSR_UND,
MISCREG_SPSR_ABT,
MISCREG_FPSR,
MISCREG_FPSID,
MISCREG_FPSCR,
MISCREG_FPEXC,
// CP15 registers
MISCREG_CP15_START,
MISCREG_SCTLR = MISCREG_CP15_START,
MISCREG_DCCISW,
MISCREG_DCCIMVAC,
MISCREG_CONTEXTIDR,
MISCREG_TPIDRURW,
MISCREG_TPIDRURO,
MISCREG_TPIDRPRW,
MISCREG_CP15ISB,
MISCREG_CP15DSB,
MISCREG_CP15DMB,
MISCREG_CPACR,
MISCREG_CP15_UNIMP_START,
MISCREG_CTR = MISCREG_CP15_UNIMP_START,
MISCREG_TCMTR,
MISCREG_MPUIR,
MISCREG_MPIDR,
MISCREG_MIDR,
MISCREG_ID_PFR0,
MISCREG_ID_PFR1,
MISCREG_ID_DFR0,
MISCREG_ID_AFR0,
MISCREG_ID_MMFR0,
MISCREG_ID_MMFR1,
MISCREG_ID_MMFR2,
MISCREG_ID_MMFR3,
MISCREG_ID_ISAR0,
MISCREG_ID_ISAR1,
MISCREG_ID_ISAR2,
MISCREG_ID_ISAR3,
MISCREG_ID_ISAR4,
MISCREG_ID_ISAR5,
MISCREG_CCSIDR,
MISCREG_CLIDR,
MISCREG_AIDR,
MISCREG_CSSELR,
MISCREG_ACTLR,
MISCREG_DFSR,
MISCREG_IFSR,
MISCREG_ADFSR,
MISCREG_AIFSR,
MISCREG_DFAR,
MISCREG_IFAR,
MISCREG_DRBAR,
MISCREG_IRBAR,
MISCREG_DRSR,
MISCREG_IRSR,
MISCREG_DRACR,
MISCREG_IRACR,
MISCREG_RGNR,
MISCREG_ICIALLUIS,
MISCREG_BPIALLIS,
MISCREG_ICIALLU,
MISCREG_ICIMVAU,
MISCREG_BPIALL,
MISCREG_BPIMVA,
MISCREG_DCIMVAC,
MISCREG_DCISW,
MISCREG_DCCMVAC,
MISCREG_MCCSW,
MISCREG_DCCMVAU,
MISCREG_CP15_END,
// Dummy indices
MISCREG_NOP = MISCREG_CP15_END,
MISCREG_RAZ,
NUM_MISCREGS
};
MiscRegIndex decodeCP15Reg(unsigned crn, unsigned opc1,
unsigned crm, unsigned opc2);
const char * const miscRegName[NUM_MISCREGS] = {
"cpsr", "spsr", "spsr_fiq", "spsr_irq", "spsr_svc",
"spsr_mon", "spsr_und", "spsr_abt",
"fpsr", "fpsid", "fpscr", "fpexc",
"sctlr", "dccisw", "dccimvac",
"contextidr", "tpidrurw", "tpidruro", "tpidrprw",
"cp15isb", "cp15dsb", "cp15dmb", "cpacr",
"ctr", "tcmtr", "mpuir", "mpidr", "midr",
"id_pfr0", "id_pfr1", "id_dfr0", "id_afr0",
"id_mmfr0", "id_mmfr1", "id_mmfr2", "id_mmfr3",
"id_isar0", "id_isar1", "id_isar2", "id_isar3", "id_isar4", "id_isar5",
"ccsidr", "clidr", "aidr", "csselr", "actlr",
"dfsr", "ifsr", "adfsr", "aifsr", "dfar", "ifar",
"drbar", "irbar", "drsr", "irsr", "dracr", "iracr",
"rgnr", "icialluis", "bpiallis", "iciallu", "icimvau",
"bpiall", "bpimva", "dcimvac", "dcisw", "dccmvac", "mccsw",
"dccmvau",
"nop", "raz"
};
BitUnion32(CPSR)
Bitfield<31> n;
Bitfield<30> z;
Bitfield<29> c;
Bitfield<28> v;
Bitfield<27> q;
Bitfield<26,25> it1;
Bitfield<24> j;
Bitfield<19, 16> ge;
Bitfield<15,10> it2;
Bitfield<9> e;
Bitfield<8> a;
Bitfield<7> i;
Bitfield<6> f;
Bitfield<5> t;
Bitfield<4, 0> mode;
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 = 0xF80F0000;
// These otherwise unused bits of the PC are used to select a mode
// like the J and T bits of the CPSR.
static const Addr PcJBitShift = 33;
static const Addr PcTBitShift = 34;
static const Addr PcModeMask = (ULL(1) << PcJBitShift) |
(ULL(1) << PcTBitShift);
BitUnion32(SCTLR)
Bitfield<30> te; // Thumb Exception Enable
Bitfield<29> afe; // Access flag enable
Bitfield<28> tre; // TEX Remap bit
Bitfield<27> nmfi;// Non-maskable fast interrupts enable
Bitfield<25> ee; // Exception Endianness bit
Bitfield<24> ve; // Interrupt vectors enable
Bitfield<23> rao1;// Read as one
Bitfield<22> u; // Alignment (now unused)
Bitfield<21> fi; // Fast interrupts configuration enable
Bitfield<18> rao2;// Read as one
Bitfield<17> ha; // Hardware access flag enable
Bitfield<16> rao3;// Read as one
Bitfield<14> rr; // Round robin cache replacement
Bitfield<13> v; // Base address for exception vectors
Bitfield<12> i; // instruction cache enable
Bitfield<11> z; // branch prediction enable bit
Bitfield<10> sw; // Enable swp/swpb
Bitfield<6,3> rao4;// Read as one
Bitfield<7> b; // Endianness support (unused)
Bitfield<2> c; // Cache enable bit
Bitfield<1> a; // Alignment fault checking
Bitfield<0> m; // MMU enable bit
EndBitUnion(SCTLR)
};
#endif // __ARCH_ARM_MISCREGS_HH__
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