/* armdefs.h -- ARMulator common definitions: ARM6 Instruction Emulator.
Copyright (C) 1994 Advanced RISC Machines Ltd.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#pragma once
#include <cerrno>
#include <csignal>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "arm_regformat.h"
#include "common/common_types.h"
#include "common/platform.h"
#include "core/arm/skyeye_common/armmmu.h"
#include "core/arm/skyeye_common/skyeye_defs.h"
#define BITS(s, a, b) ((s << ((sizeof(s) * 8 - 1) - b)) >> (sizeof(s) * 8 - b + a - 1))
#define BIT(s, n) ((s >> (n)) & 1)
#ifndef FALSE
#define FALSE 0
#define TRUE 1
#endif
#define LOW 0
#define HIGH 1
#define LOWHIGH 1
#define HIGHLOW 2
//the define of cachetype
#define NONCACHE 0
#define DATACACHE 1
#define INSTCACHE 2
#define POS(i) ( (~(i)) >> 31 )
#define NEG(i) ( (i) >> 31 )
typedef u64 ARMdword; // must be 64 bits wide
typedef u32 ARMword; // must be 32 bits wide
typedef u16 ARMhword; // must be 16 bits wide
typedef u8 ARMbyte; // must be 8 bits wide
typedef struct ARMul_State ARMul_State;
typedef unsigned ARMul_CPInits(ARMul_State* state);
typedef unsigned ARMul_CPExits(ARMul_State* state);
typedef unsigned ARMul_LDCs(ARMul_State* state, unsigned type, ARMword instr, ARMword value);
typedef unsigned ARMul_STCs(ARMul_State* state, unsigned type, ARMword instr, ARMword* value);
typedef unsigned ARMul_MRCs(ARMul_State* state, unsigned type, ARMword instr, ARMword* value);
typedef unsigned ARMul_MCRs(ARMul_State* state, unsigned type, ARMword instr, ARMword value);
typedef unsigned ARMul_MRRCs(ARMul_State* state, unsigned type, ARMword instr, ARMword* value1, ARMword* value2);
typedef unsigned ARMul_MCRRs(ARMul_State* state, unsigned type, ARMword instr, ARMword value1, ARMword value2);
typedef unsigned ARMul_CDPs(ARMul_State* state, unsigned type, ARMword instr);
typedef unsigned ARMul_CPReads(ARMul_State* state, unsigned reg, ARMword* value);
typedef unsigned ARMul_CPWrites(ARMul_State* state, unsigned reg, ARMword value);
#define VFP_REG_NUM 64
struct ARMul_State
{
ARMword Emulate; // To start and stop emulation
unsigned EndCondition; // Reason for stopping
unsigned ErrorCode; // Type of illegal instruction
// Order of the following register should not be modified
ARMword Reg[16]; // The current register file
ARMword Cpsr; // The current PSR
ARMword Spsr_copy;
ARMword phys_pc;
ARMword Reg_usr[2];
ARMword Reg_svc[2]; // R13_SVC R14_SVC
ARMword Reg_abort[2]; // R13_ABORT R14_ABORT
ARMword Reg_undef[2]; // R13 UNDEF R14 UNDEF
ARMword Reg_irq[2]; // R13_IRQ R14_IRQ
ARMword Reg_firq[7]; // R8---R14 FIRQ
ARMword Spsr[7]; // The exception psr's
ARMword Mode; // The current mode
ARMword Bank; // The current register bank
ARMword exclusive_tag; // The address for which the local monitor is in exclusive access mode
ARMword exclusive_state;
ARMword exclusive_result;
ARMword CP15[VFP_BASE - CP15_BASE];
ARMword VFP[3]; // FPSID, FPSCR, and FPEXC
// VFPv2 and VFPv3-D16 has 16 doubleword registers (D0-D16 or S0-S31).
// VFPv3-D32/ASIMD may have up to 32 doubleword registers (D0-D31),
// and only 32 singleword registers are accessible (S0-S31).
ARMword ExtReg[VFP_REG_NUM];
/* ---- End of the ordered registers ---- */
ARMword RegBank[7][16]; // all the registers
ARMword NFlag, ZFlag, CFlag, VFlag, IFFlags; // Dummy flags for speed
unsigned int shifter_carry_out;
// Add armv6 flags dyf:2010-08-09
ARMword GEFlag, EFlag, AFlag, QFlag;
#ifdef MODET
ARMword TFlag; // Thumb state
#endif
unsigned long long NumInstrs; // The number of instructions executed
unsigned NumInstrsToExecute;
unsigned NextInstr;
unsigned VectorCatch; // Caught exception mask
ARMul_CPInits* CPInit[16]; // Coprocessor initialisers
ARMul_CPExits* CPExit[16]; // Coprocessor finalisers
ARMul_LDCs* LDC[16]; // LDC instruction
ARMul_STCs* STC[16]; // STC instruction
ARMul_MRCs* MRC[16]; // MRC instruction
ARMul_MCRs* MCR[16]; // MCR instruction
ARMul_MRRCs* MRRC[16]; // MRRC instruction
ARMul_MCRRs* MCRR[16]; // MCRR instruction
ARMul_CDPs* CDP[16]; // CDP instruction
ARMul_CPReads* CPRead[16]; // Read CP register
ARMul_CPWrites* CPWrite[16]; // Write CP register
unsigned char* CPData[16]; // Coprocessor data
unsigned char const* CPRegWords[16]; // Map of coprocessor register sizes
unsigned Debug; // Show instructions as they are executed
unsigned NresetSig; // Reset the processor
unsigned NfiqSig;
unsigned NirqSig;
unsigned abortSig;
unsigned NtransSig;
unsigned bigendSig;
unsigned prog32Sig;
unsigned data32Sig;
unsigned syscallSig;
/* 2004-05-09 chy
----------------------------------------------------------
read ARM Architecture Reference Manual
2.6.5 Data Abort
There are three Abort Model in ARM arch.
Early Abort Model: used in some ARMv3 and earlier implementations. In this
model, base register wirteback occurred for LDC,LDM,STC,STM instructions, and
the base register was unchanged for all other instructions. (oldest)
Base Restored Abort Model: If a Data Abort occurs in an instruction which
specifies base register writeback, the value in the base register is
unchanged. (strongarm, xscale)
Base Updated Abort Model: If a Data Abort occurs in an instruction which
specifies base register writeback, the base register writeback still occurs.
(arm720T)
read PART B
chap2 The System Control Coprocessor CP15
2.4 Register1:control register
L(bit 6): in some ARMv3 and earlier implementations, the abort model of the
processor could be configured:
0=early Abort Model Selected(now obsolete)
1=Late Abort Model selceted(same as Base Updated Abort Model)
on later processors, this bit reads as 1 and ignores writes.
-------------------------------------------------------------
So, if lateabtSig=1, then it means Late Abort Model(Base Updated Abort Model)
if lateabtSig=0, then it means Base Restored Abort Model
*/
unsigned lateabtSig;
ARMword Vector; // Synthesize aborts in cycle modes
ARMword Aborted; // Sticky flag for aborts
ARMword Reseted; // Sticky flag for Reset
ARMword Inted, LastInted; // Sticky flags for interrupts
ARMword Base; // Extra hand for base writeback
ARMword AbortAddr; // To keep track of Prefetch aborts
// For differentiating ARM core emulaiton.
bool is_v4; // Are we emulating a v4 architecture (or higher)?
bool is_v5; // Are we emulating a v5 architecture?
bool is_v5e; // Are we emulating a v5e architecture?
bool is_v6; // Are we emulating a v6 architecture?
bool is_v7; // Are we emulating a v7 architecture?
bool is_XScale; // Are we emulating an XScale architecture?
bool is_iWMMXt; // Are we emulating an iWMMXt co-processor?
bool is_ep9312; // Are we emulating a Cirrus Maverick co-processor?
bool is_pxa27x; // Are we emulating a Intel PXA27x co-processor?
// ARM_ARM A2-18
// 0 Base Restored Abort Model, 1 the Early Abort Model, 2 Base Updated Abort Model
int abort_model;
// Added by ksh in 2005-10-1
cpu_config_t* cpu;
u32 CurrInstr;
u32 last_pc; // The last PC executed
u32 last_instr; // The last instruction executed
u32 WriteAddr[17];
u32 WriteData[17];
u32 WritePc[17];
u32 CurrWrite;
};
typedef ARMul_State arm_core_t;
/***************************************************************************\
* Types of ARM we know about *
\***************************************************************************/
enum {
ARM_Fix26_Prop = 0x01,
ARM_Nexec_Prop = 0x02,
ARM_Debug_Prop = 0x10,
ARM_Isync_Prop = ARM_Debug_Prop,
ARM_Lock_Prop = 0x20,
ARM_v4_Prop = 0x40,
ARM_v5_Prop = 0x80,
ARM_v6_Prop = 0xc0,
ARM_v5e_Prop = 0x100,
ARM_XScale_Prop = 0x200,
ARM_ep9312_Prop = 0x400,
ARM_iWMMXt_Prop = 0x800,
ARM_PXA27X_Prop = 0x1000,
ARM_v7_Prop = 0x2000,
// ARM2 family
ARM2 = ARM_Fix26_Prop,
ARM2as = ARM2,
ARM61 = ARM2,
ARM3 = ARM2,
// ARM6 family
ARM6 = ARM_Lock_Prop,
ARM60 = ARM6,
ARM600 = ARM6,
ARM610 = ARM6,
ARM620 = ARM6
};
/***************************************************************************\
* The hardware vector addresses *
\***************************************************************************/
enum {
ARMResetV = 0,
ARMUndefinedInstrV = 4,
ARMSWIV = 8,
ARMPrefetchAbortV = 12,
ARMDataAbortV = 16,
ARMAddrExceptnV = 20,
ARMIRQV = 24,
ARMFIQV = 28,
ARMErrorV = 32, // This is an offset, not an address!
ARMul_ResetV = ARMResetV,
ARMul_UndefinedInstrV = ARMUndefinedInstrV,
ARMul_SWIV = ARMSWIV,
ARMul_PrefetchAbortV = ARMPrefetchAbortV,
ARMul_DataAbortV = ARMDataAbortV,
ARMul_AddrExceptnV = ARMAddrExceptnV,
ARMul_IRQV = ARMIRQV,
ARMul_FIQV = ARMFIQV
};
/***************************************************************************\
* Mode and Bank Constants *
\***************************************************************************/
enum {
USER26MODE = 0,
FIQ26MODE = 1,
IRQ26MODE = 2,
SVC26MODE = 3,
USER32MODE = 16,
FIQ32MODE = 17,
IRQ32MODE = 18,
SVC32MODE = 19,
ABORT32MODE = 23,
UNDEF32MODE = 27,
SYSTEM32MODE = 31
};
enum {
USERBANK = 0,
FIQBANK = 1,
IRQBANK = 2,
SVCBANK = 3,
ABORTBANK = 4,
UNDEFBANK = 5,
DUMMYBANK = 6,
SYSTEMBANK = USERBANK
};
/***************************************************************************\
* Definitons of things in the emulator *
\***************************************************************************/
#ifdef __cplusplus
extern "C" {
#endif
extern void ARMul_EmulateInit();
extern void ARMul_Reset(ARMul_State* state);
#ifdef __cplusplus
}
#endif
extern ARMul_State* ARMul_NewState(ARMul_State* state);
/***************************************************************************\
* Definitons of things in the co-processor interface *
\***************************************************************************/
enum {
ARMul_FIRST = 0,
ARMul_TRANSFER = 1,
ARMul_BUSY = 2,
ARMul_DATA = 3,
ARMul_INTERRUPT = 4,
ARMul_DONE = 0,
ARMul_CANT = 1,
ARMul_INC = 3
};
enum {
ARMul_CP13_R0_FIQ = 0x1,
ARMul_CP13_R0_IRQ = 0x2,
ARMul_CP13_R8_PMUS = 0x1,
ARMul_CP14_R0_ENABLE = 0x0001,
ARMul_CP14_R0_CLKRST = 0x0004,
ARMul_CP14_R0_CCD = 0x0008,
ARMul_CP14_R0_INTEN0 = 0x0010,
ARMul_CP14_R0_INTEN1 = 0x0020,
ARMul_CP14_R0_INTEN2 = 0x0040,
ARMul_CP14_R0_FLAG0 = 0x0100,
ARMul_CP14_R0_FLAG1 = 0x0200,
ARMul_CP14_R0_FLAG2 = 0x0400,
ARMul_CP14_R10_MOE_IB = 0x0004,
ARMul_CP14_R10_MOE_DB = 0x0008,
ARMul_CP14_R10_MOE_BT = 0x000c,
ARMul_CP15_R1_ENDIAN = 0x0080,
ARMul_CP15_R1_ALIGN = 0x0002,
ARMul_CP15_R5_X = 0x0400,
ARMul_CP15_R5_ST_ALIGN = 0x0001,
ARMul_CP15_R5_IMPRE = 0x0406,
ARMul_CP15_R5_MMU_EXCPT = 0x0400,
ARMul_CP15_DBCON_M = 0x0100,
ARMul_CP15_DBCON_E1 = 0x000c,
ARMul_CP15_DBCON_E0 = 0x0003
};
/***************************************************************************\
* Definitons of things in the host environment *
\***************************************************************************/
enum ConditionCode {
EQ = 0,
NE = 1,
CS = 2,
CC = 3,
MI = 4,
PL = 5,
VS = 6,
VC = 7,
HI = 8,
LS = 9,
GE = 10,
LT = 11,
GT = 12,
LE = 13,
AL = 14,
NV = 15,
};
extern bool AddOverflow(ARMword, ARMword, ARMword);
extern bool SubOverflow(ARMword, ARMword, ARMword);
extern void ARMul_SelectProcessor(ARMul_State*, unsigned);
extern u32 AddWithCarry(u32, u32, u32, bool*, bool*);
extern bool ARMul_AddOverflowQ(ARMword, ARMword);
extern u8 ARMul_SignedSaturatedAdd8(u8, u8);
extern u8 ARMul_SignedSaturatedSub8(u8, u8);
extern u16 ARMul_SignedSaturatedAdd16(u16, u16);
extern u16 ARMul_SignedSaturatedSub16(u16, u16);
extern u8 ARMul_UnsignedSaturatedAdd8(u8, u8);
extern u16 ARMul_UnsignedSaturatedAdd16(u16, u16);
extern u8 ARMul_UnsignedSaturatedSub8(u8, u8);
extern u16 ARMul_UnsignedSaturatedSub16(u16, u16);
extern u8 ARMul_UnsignedAbsoluteDifference(u8, u8);
extern u32 ARMul_SignedSatQ(s32, u8, bool*);
extern u32 ARMul_UnsignedSatQ(s32, u8, bool*);
