target/microblaze/cpu.h - third_party/qemu - Git at Google

 /*
  *  MicroBlaze virtual CPU header
  *
  *  Copyright (c) 2009 Edgar E. Iglesias
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library 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 Lesser General Public
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */

 #ifndef MICROBLAZE_CPU_H
 #define MICROBLAZE_CPU_H

 #include "cpu-qom.h"
 #include "exec/cpu-defs.h"
 #include "fpu/softfloat-types.h"

 typedef struct CPUArchState CPUMBState;
 #if !defined(CONFIG_USER_ONLY)
 #include "mmu.h"
 #endif

 #define EXCP_MMU        1
 #define EXCP_IRQ        2
 #define EXCP_SYSCALL    3  /* user-only */
 #define EXCP_HW_BREAK   4
 #define EXCP_HW_EXCP    5

 /* MicroBlaze-specific interrupt pending bits.  */
 #define CPU_INTERRUPT_NMI       CPU_INTERRUPT_TGT_EXT_3

 /* Meanings of the MBCPU object's two inbound GPIO lines */
 #define MB_CPU_IRQ 0
 #define MB_CPU_FIR 1

 /* Register aliases. R0 - R15 */
 #define R_SP     1
 #define SR_PC    0
 #define SR_MSR   1
 #define SR_EAR   3
 #define SR_ESR   5
 #define SR_FSR   7
 #define SR_BTR   0xb
 #define SR_EDR   0xd

 /* MSR flags.  */
 #define MSR_BE  (1<<0) /* 0x001 */
 #define MSR_IE  (1<<1) /* 0x002 */
 #define MSR_C   (1<<2) /* 0x004 */
 #define MSR_BIP (1<<3) /* 0x008 */
 #define MSR_FSL (1<<4) /* 0x010 */
 #define MSR_ICE (1<<5) /* 0x020 */
 #define MSR_DZ  (1<<6) /* 0x040 */
 #define MSR_DCE (1<<7) /* 0x080 */
 #define MSR_EE  (1<<8) /* 0x100 */
 #define MSR_EIP (1<<9) /* 0x200 */
 #define MSR_PVR (1<<10) /* 0x400 */
 #define MSR_CC  (1<<31)

 /* Machine State Register (MSR) Fields */
 #define MSR_UM (1<<11) /* User Mode */
 #define MSR_UMS        (1<<12) /* User Mode Save */
 #define MSR_VM (1<<13) /* Virtual Mode */
 #define MSR_VMS        (1<<14) /* Virtual Mode Save */

 #define MSR_KERNEL      MSR_EE|MSR_VM
 //#define MSR_USER     MSR_KERNEL|MSR_UM|MSR_IE
 #define MSR_KERNEL_VMS  MSR_EE|MSR_VMS
 //#define MSR_USER_VMS MSR_KERNEL_VMS|MSR_UMS|MSR_IE

 /* Exception State Register (ESR) Fields */
 #define          ESR_DIZ       (1<<11) /* Zone Protection */
 #define          ESR_W         (1<<11) /* Unaligned word access */
 #define          ESR_S         (1<<10) /* Store instruction */

 #define          ESR_ESS_FSL_OFFSET     5

 #define          ESR_ESS_MASK  (0x7f << 5)

 #define          ESR_EC_FSL             0
 #define          ESR_EC_UNALIGNED_DATA  1
 #define          ESR_EC_ILLEGAL_OP      2
 #define          ESR_EC_INSN_BUS        3
 #define          ESR_EC_DATA_BUS        4
 #define          ESR_EC_DIVZERO         5
 #define          ESR_EC_FPU             6
 #define          ESR_EC_PRIVINSN        7
 #define          ESR_EC_STACKPROT       7  /* Same as PRIVINSN.  */
 #define          ESR_EC_DATA_STORAGE    8
 #define          ESR_EC_INSN_STORAGE    9
 #define          ESR_EC_DATA_TLB        10
 #define          ESR_EC_INSN_TLB        11
 #define          ESR_EC_MASK            31

 /* Floating Point Status Register (FSR) Bits */
 #define FSR_IO          (1<<4) /* Invalid operation */
 #define FSR_DZ          (1<<3) /* Divide-by-zero */
 #define FSR_OF          (1<<2) /* Overflow */
 #define FSR_UF          (1<<1) /* Underflow */
 #define FSR_DO          (1<<0) /* Denormalized operand error */

 /* Version reg.  */
 /* Basic PVR mask */
 #define PVR0_PVR_FULL_MASK              0x80000000
 #define PVR0_USE_BARREL_MASK            0x40000000
 #define PVR0_USE_DIV_MASK               0x20000000
 #define PVR0_USE_HW_MUL_MASK            0x10000000
 #define PVR0_USE_FPU_MASK               0x08000000
 #define PVR0_USE_EXC_MASK               0x04000000
 #define PVR0_USE_ICACHE_MASK            0x02000000
 #define PVR0_USE_DCACHE_MASK            0x01000000
 #define PVR0_USE_MMU_MASK               0x00800000
 #define PVR0_USE_BTC			0x00400000
 #define PVR0_ENDI_MASK                  0x00200000
 #define PVR0_FAULT			0x00100000
 #define PVR0_VERSION_MASK               0x0000FF00
 #define PVR0_USER1_MASK                 0x000000FF
 #define PVR0_SPROT_MASK                 0x00000001

 #define PVR0_VERSION_SHIFT              8

 /* User 2 PVR mask */
 #define PVR1_USER2_MASK                 0xFFFFFFFF

 /* Configuration PVR masks */
 #define PVR2_D_OPB_MASK                 0x80000000
 #define PVR2_D_LMB_MASK                 0x40000000
 #define PVR2_I_OPB_MASK                 0x20000000
 #define PVR2_I_LMB_MASK                 0x10000000
 #define PVR2_INTERRUPT_IS_EDGE_MASK     0x08000000
 #define PVR2_EDGE_IS_POSITIVE_MASK      0x04000000
 #define PVR2_D_PLB_MASK                 0x02000000      /* new */
 #define PVR2_I_PLB_MASK                 0x01000000      /* new */
 #define PVR2_INTERCONNECT               0x00800000      /* new */
 #define PVR2_USE_EXTEND_FSL             0x00080000      /* new */
 #define PVR2_USE_FSL_EXC                0x00040000      /* new */
 #define PVR2_USE_MSR_INSTR              0x00020000
 #define PVR2_USE_PCMP_INSTR             0x00010000
 #define PVR2_AREA_OPTIMISED             0x00008000
 #define PVR2_USE_BARREL_MASK            0x00004000
 #define PVR2_USE_DIV_MASK               0x00002000
 #define PVR2_USE_HW_MUL_MASK            0x00001000
 #define PVR2_USE_FPU_MASK               0x00000800
 #define PVR2_USE_MUL64_MASK             0x00000400
 #define PVR2_USE_FPU2_MASK              0x00000200      /* new */
 #define PVR2_USE_IPLBEXC                0x00000100
 #define PVR2_USE_DPLBEXC                0x00000080
 #define PVR2_OPCODE_0x0_ILL_MASK        0x00000040
 #define PVR2_UNALIGNED_EXC_MASK         0x00000020
 #define PVR2_ILL_OPCODE_EXC_MASK        0x00000010
 #define PVR2_IOPB_BUS_EXC_MASK          0x00000008
 #define PVR2_DOPB_BUS_EXC_MASK          0x00000004
 #define PVR2_DIV_ZERO_EXC_MASK          0x00000002
 #define PVR2_FPU_EXC_MASK               0x00000001

 /* Debug and exception PVR masks */
 #define PVR3_DEBUG_ENABLED_MASK         0x80000000
 #define PVR3_NUMBER_OF_PC_BRK_MASK      0x1E000000
 #define PVR3_NUMBER_OF_RD_ADDR_BRK_MASK 0x00380000
 #define PVR3_NUMBER_OF_WR_ADDR_BRK_MASK 0x0000E000
 #define PVR3_FSL_LINKS_MASK             0x00000380

 /* ICache config PVR masks */
 #define PVR4_USE_ICACHE_MASK            0x80000000
 #define PVR4_ICACHE_ADDR_TAG_BITS_MASK  0x7C000000
 #define PVR4_ICACHE_USE_FSL_MASK        0x02000000
 #define PVR4_ICACHE_ALLOW_WR_MASK       0x01000000
 #define PVR4_ICACHE_LINE_LEN_MASK       0x00E00000
 #define PVR4_ICACHE_BYTE_SIZE_MASK      0x001F0000

 /* DCache config PVR masks */
 #define PVR5_USE_DCACHE_MASK            0x80000000
 #define PVR5_DCACHE_ADDR_TAG_BITS_MASK  0x7C000000
 #define PVR5_DCACHE_USE_FSL_MASK        0x02000000
 #define PVR5_DCACHE_ALLOW_WR_MASK       0x01000000
 #define PVR5_DCACHE_LINE_LEN_MASK       0x00E00000
 #define PVR5_DCACHE_BYTE_SIZE_MASK      0x001F0000
 #define PVR5_DCACHE_WRITEBACK_MASK      0x00004000

 /* ICache base address PVR mask */
 #define PVR6_ICACHE_BASEADDR_MASK       0xFFFFFFFF

 /* ICache high address PVR mask */
 #define PVR7_ICACHE_HIGHADDR_MASK       0xFFFFFFFF

 /* DCache base address PVR mask */
 #define PVR8_DCACHE_BASEADDR_MASK       0xFFFFFFFF

 /* DCache high address PVR mask */
 #define PVR9_DCACHE_HIGHADDR_MASK       0xFFFFFFFF

 /* Target family PVR mask */
 #define PVR10_TARGET_FAMILY_MASK        0xFF000000
 #define PVR10_ASIZE_SHIFT               18

 /* MMU descrtiption */
 #define PVR11_USE_MMU                   0xC0000000
 #define PVR11_MMU_ITLB_SIZE             0x38000000
 #define PVR11_MMU_DTLB_SIZE             0x07000000
 #define PVR11_MMU_TLB_ACCESS            0x00C00000
 #define PVR11_MMU_ZONES                 0x003E0000
 /* MSR Reset value PVR mask */
 #define PVR11_MSR_RESET_VALUE_MASK      0x000007FF

 #define C_PVR_NONE                      0
 #define C_PVR_BASIC                     1
 #define C_PVR_FULL                      2

 /* CPU flags.  */

 /* Condition codes.  */
 #define CC_GE  5
 #define CC_GT  4
 #define CC_LE  3
 #define CC_LT  2
 #define CC_NE  1
 #define CC_EQ  0

 #define STREAM_EXCEPTION (1 << 0)
 #define STREAM_ATOMIC    (1 << 1)
 #define STREAM_TEST      (1 << 2)
 #define STREAM_CONTROL   (1 << 3)
 #define STREAM_NONBLOCK  (1 << 4)

 #define TARGET_INSN_START_EXTRA_WORDS 1

 /* use-non-secure property masks */
 #define USE_NON_SECURE_M_AXI_DP_MASK 0x1
 #define USE_NON_SECURE_M_AXI_IP_MASK 0x2
 #define USE_NON_SECURE_M_AXI_DC_MASK 0x4
 #define USE_NON_SECURE_M_AXI_IC_MASK 0x8

 struct CPUArchState {
     uint32_t bvalue;   /* TCG temporary, only valid during a TB */
     uint32_t btarget;  /* Full resolved branch destination */

     uint32_t imm;
     uint32_t regs[32];
     uint32_t pc;
     uint32_t msr;    /* All bits of MSR except MSR[C] and MSR[CC] */
     uint32_t msr_c;  /* MSR[C], in low bit; other bits must be 0 */
     target_ulong ear;
     uint32_t esr;
     uint32_t fsr;
     uint32_t btr;
     uint32_t edr;
     float_status fp_status;
     /* Stack protectors. Yes, it's a hw feature.  */
     uint32_t slr, shr;

     /* lwx/swx reserved address */
 #define RES_ADDR_NONE 0xffffffff /* Use 0xffffffff to indicate no reservation */
     target_ulong res_addr;
     uint32_t res_val;

     /* Internal flags.  */
 #define IMM_FLAG        (1 << 0)
 #define BIMM_FLAG       (1 << 1)
 #define ESR_ESS_FLAG    (1 << 2)  /* indicates ESR_ESS_MASK is present */
 /* MSR_EE               (1 << 8)  -- these 3 are not in iflags but tb_flags */
 /* MSR_UM               (1 << 11) */
 /* MSR_VM               (1 << 13) */
 /* ESR_ESS_MASK         [11:5]    -- unwind into iflags for unaligned excp */
 #define D_FLAG		(1 << 12)  /* Bit in ESR.  */
 #define DRTI_FLAG	(1 << 16)
 #define DRTE_FLAG	(1 << 17)
 #define DRTB_FLAG	(1 << 18)

 /* TB dependent CPUMBState.  */
 #define IFLAGS_TB_MASK  (D_FLAG | BIMM_FLAG | IMM_FLAG | \
                          DRTI_FLAG | DRTE_FLAG | DRTB_FLAG)
 #define MSR_TB_MASK     (MSR_UM | MSR_VM | MSR_EE)

     uint32_t iflags;

 #if !defined(CONFIG_USER_ONLY)
     /* Unified MMU.  */
     MicroBlazeMMU mmu;
 #endif

     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;

     /* These fields are preserved on reset.  */
 };

 /*
  * Microblaze Configuration Settings
  *
  * Note that the structure is sorted by type and size to minimize holes.
  */
 typedef struct {
     char *version;

     uint64_t addr_mask;

     uint32_t base_vectors;
     uint32_t pvr_user2;
     uint32_t pvr_regs[13];

     uint8_t addr_size;
     uint8_t use_fpu;
     uint8_t use_hw_mul;
     uint8_t pvr_user1;
     uint8_t pvr;
     uint8_t mmu;
     uint8_t mmu_tlb_access;
     uint8_t mmu_zones;

     bool stackprot;
     bool use_barrel;
     bool use_div;
     bool use_msr_instr;
     bool use_pcmp_instr;
     bool use_mmu;
     uint8_t use_non_secure;
     bool dcache_writeback;
     bool endi;
     bool dopb_bus_exception;
     bool iopb_bus_exception;
     bool illegal_opcode_exception;
     bool opcode_0_illegal;
     bool div_zero_exception;
     bool unaligned_exceptions;
 } MicroBlazeCPUConfig;

 /**
  * MicroBlazeCPU:
  * @env: #CPUMBState
  *
  * A MicroBlaze CPU.
  */
 struct ArchCPU {
     /*< private >*/
     CPUState parent_obj;

     /*< public >*/
     bool ns_axi_dp;
     bool ns_axi_ip;
     bool ns_axi_dc;
     bool ns_axi_ic;

     CPUNegativeOffsetState neg;
     CPUMBState env;
     MicroBlazeCPUConfig cfg;
 };


 #ifndef CONFIG_USER_ONLY
 void mb_cpu_do_interrupt(CPUState *cs);
 bool mb_cpu_exec_interrupt(CPUState *cs, int int_req);
 #endif /* !CONFIG_USER_ONLY */
 void mb_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
                                 MMUAccessType access_type,
                                 int mmu_idx, uintptr_t retaddr) QEMU_NORETURN;
 void mb_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
 hwaddr mb_cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr addr,
                                         MemTxAttrs *attrs);
 int mb_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
 int mb_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);

 static inline uint32_t mb_cpu_read_msr(const CPUMBState *env)
 {
     /* Replicate MSR[C] to MSR[CC]. */
     return env->msr | (env->msr_c * (MSR_C | MSR_CC));
 }

 static inline void mb_cpu_write_msr(CPUMBState *env, uint32_t val)
 {
     env->msr_c = (val >> 2) & 1;
     /*
      * Clear both MSR[C] and MSR[CC] from the saved copy.
      * MSR_PVR is not writable and is always clear.
      */
     env->msr = val & ~(MSR_C | MSR_CC | MSR_PVR);
 }

 void mb_tcg_init(void);

 #define CPU_RESOLVING_TYPE TYPE_MICROBLAZE_CPU

 /* MMU modes definitions */
 #define MMU_NOMMU_IDX   0
 #define MMU_KERNEL_IDX  1
 #define MMU_USER_IDX    2
 /* See NB_MMU_MODES further up the file.  */

 #include "exec/cpu-all.h"

 /* Ensure there is no overlap between the two masks. */
 QEMU_BUILD_BUG_ON(MSR_TB_MASK & IFLAGS_TB_MASK);

 static inline void cpu_get_tb_cpu_state(CPUMBState *env, target_ulong *pc,
                                         target_ulong *cs_base, uint32_t *flags)
 {
     *pc = env->pc;
     *flags = (env->iflags & IFLAGS_TB_MASK) | (env->msr & MSR_TB_MASK);
     *cs_base = (*flags & IMM_FLAG ? env->imm : 0);
 }

 #if !defined(CONFIG_USER_ONLY)
 bool mb_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
                      MMUAccessType access_type, int mmu_idx,
                      bool probe, uintptr_t retaddr);

 void mb_cpu_transaction_failed(CPUState *cs, hwaddr physaddr, vaddr addr,
                                unsigned size, MMUAccessType access_type,
                                int mmu_idx, MemTxAttrs attrs,
                                MemTxResult response, uintptr_t retaddr);
 #endif

 static inline int cpu_mmu_index(CPUMBState *env, bool ifetch)
 {
     MicroBlazeCPU *cpu = env_archcpu(env);

     /* Are we in nommu mode?.  */
     if (!(env->msr & MSR_VM) || !cpu->cfg.use_mmu) {
         return MMU_NOMMU_IDX;
     }

     if (env->msr & MSR_UM) {
         return MMU_USER_IDX;
     }
     return MMU_KERNEL_IDX;
 }

 #ifndef CONFIG_USER_ONLY
 extern const VMStateDescription vmstate_mb_cpu;
 #endif

 #endif
	/*
	* MicroBlaze virtual CPU header
	*
	* Copyright (c) 2009 Edgar E. Iglesias
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library 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 Lesser General Public
	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	*/

	#ifndef MICROBLAZE_CPU_H
	#define MICROBLAZE_CPU_H

	#include "cpu-qom.h"
	#include "exec/cpu-defs.h"
	#include "fpu/softfloat-types.h"

	typedef struct CPUArchState CPUMBState;
	#if !defined(CONFIG_USER_ONLY)
	#include "mmu.h"
	#endif

	#define EXCP_MMU 1
	#define EXCP_IRQ 2
	#define EXCP_SYSCALL 3 /* user-only */
	#define EXCP_HW_BREAK 4
	#define EXCP_HW_EXCP 5

	/* MicroBlaze-specific interrupt pending bits. */
	#define CPU_INTERRUPT_NMI CPU_INTERRUPT_TGT_EXT_3

	/* Meanings of the MBCPU object's two inbound GPIO lines */
	#define MB_CPU_IRQ 0
	#define MB_CPU_FIR 1

	/* Register aliases. R0 - R15 */
	#define R_SP 1
	#define SR_PC 0
	#define SR_MSR 1
	#define SR_EAR 3
	#define SR_ESR 5
	#define SR_FSR 7
	#define SR_BTR 0xb
	#define SR_EDR 0xd

	/* MSR flags. */
	#define MSR_BE (1<<0) /* 0x001 */
	#define MSR_IE (1<<1) /* 0x002 */
	#define MSR_C (1<<2) /* 0x004 */
	#define MSR_BIP (1<<3) /* 0x008 */
	#define MSR_FSL (1<<4) /* 0x010 */
	#define MSR_ICE (1<<5) /* 0x020 */
	#define MSR_DZ (1<<6) /* 0x040 */
	#define MSR_DCE (1<<7) /* 0x080 */
	#define MSR_EE (1<<8) /* 0x100 */
	#define MSR_EIP (1<<9) /* 0x200 */
	#define MSR_PVR (1<<10) /* 0x400 */
	#define MSR_CC (1<<31)

	/* Machine State Register (MSR) Fields */
	#define MSR_UM (1<<11) /* User Mode */
	#define MSR_UMS (1<<12) /* User Mode Save */
	#define MSR_VM (1<<13) /* Virtual Mode */
	#define MSR_VMS (1<<14) /* Virtual Mode Save */

	#define MSR_KERNEL MSR_EE\|MSR_VM
	//#define MSR_USER MSR_KERNEL\|MSR_UM\|MSR_IE
	#define MSR_KERNEL_VMS MSR_EE\|MSR_VMS
	//#define MSR_USER_VMS MSR_KERNEL_VMS\|MSR_UMS\|MSR_IE

	/* Exception State Register (ESR) Fields */
	#define ESR_DIZ (1<<11) /* Zone Protection */
	#define ESR_W (1<<11) /* Unaligned word access */
	#define ESR_S (1<<10) /* Store instruction */

	#define ESR_ESS_FSL_OFFSET 5

	#define ESR_ESS_MASK (0x7f << 5)

	#define ESR_EC_FSL 0
	#define ESR_EC_UNALIGNED_DATA 1
	#define ESR_EC_ILLEGAL_OP 2
	#define ESR_EC_INSN_BUS 3
	#define ESR_EC_DATA_BUS 4
	#define ESR_EC_DIVZERO 5
	#define ESR_EC_FPU 6
	#define ESR_EC_PRIVINSN 7
	#define ESR_EC_STACKPROT 7 /* Same as PRIVINSN. */
	#define ESR_EC_DATA_STORAGE 8
	#define ESR_EC_INSN_STORAGE 9
	#define ESR_EC_DATA_TLB 10
	#define ESR_EC_INSN_TLB 11
	#define ESR_EC_MASK 31

	/* Floating Point Status Register (FSR) Bits */
	#define FSR_IO (1<<4) /* Invalid operation */
	#define FSR_DZ (1<<3) /* Divide-by-zero */
	#define FSR_OF (1<<2) /* Overflow */
	#define FSR_UF (1<<1) /* Underflow */
	#define FSR_DO (1<<0) /* Denormalized operand error */

	/* Version reg. */
	/* Basic PVR mask */
	#define PVR0_PVR_FULL_MASK 0x80000000
	#define PVR0_USE_BARREL_MASK 0x40000000
	#define PVR0_USE_DIV_MASK 0x20000000
	#define PVR0_USE_HW_MUL_MASK 0x10000000
	#define PVR0_USE_FPU_MASK 0x08000000
	#define PVR0_USE_EXC_MASK 0x04000000
	#define PVR0_USE_ICACHE_MASK 0x02000000
	#define PVR0_USE_DCACHE_MASK 0x01000000
	#define PVR0_USE_MMU_MASK 0x00800000
	#define PVR0_USE_BTC 0x00400000
	#define PVR0_ENDI_MASK 0x00200000
	#define PVR0_FAULT 0x00100000
	#define PVR0_VERSION_MASK 0x0000FF00
	#define PVR0_USER1_MASK 0x000000FF
	#define PVR0_SPROT_MASK 0x00000001

	#define PVR0_VERSION_SHIFT 8

	/* User 2 PVR mask */
	#define PVR1_USER2_MASK 0xFFFFFFFF

	/* Configuration PVR masks */
	#define PVR2_D_OPB_MASK 0x80000000
	#define PVR2_D_LMB_MASK 0x40000000
	#define PVR2_I_OPB_MASK 0x20000000
	#define PVR2_I_LMB_MASK 0x10000000
	#define PVR2_INTERRUPT_IS_EDGE_MASK 0x08000000
	#define PVR2_EDGE_IS_POSITIVE_MASK 0x04000000
	#define PVR2_D_PLB_MASK 0x02000000 /* new */
	#define PVR2_I_PLB_MASK 0x01000000 /* new */
	#define PVR2_INTERCONNECT 0x00800000 /* new */
	#define PVR2_USE_EXTEND_FSL 0x00080000 /* new */
	#define PVR2_USE_FSL_EXC 0x00040000 /* new */
	#define PVR2_USE_MSR_INSTR 0x00020000
	#define PVR2_USE_PCMP_INSTR 0x00010000
	#define PVR2_AREA_OPTIMISED 0x00008000
	#define PVR2_USE_BARREL_MASK 0x00004000
	#define PVR2_USE_DIV_MASK 0x00002000
	#define PVR2_USE_HW_MUL_MASK 0x00001000
	#define PVR2_USE_FPU_MASK 0x00000800
	#define PVR2_USE_MUL64_MASK 0x00000400
	#define PVR2_USE_FPU2_MASK 0x00000200 /* new */
	#define PVR2_USE_IPLBEXC 0x00000100
	#define PVR2_USE_DPLBEXC 0x00000080
	#define PVR2_OPCODE_0x0_ILL_MASK 0x00000040
	#define PVR2_UNALIGNED_EXC_MASK 0x00000020
	#define PVR2_ILL_OPCODE_EXC_MASK 0x00000010
	#define PVR2_IOPB_BUS_EXC_MASK 0x00000008
	#define PVR2_DOPB_BUS_EXC_MASK 0x00000004
	#define PVR2_DIV_ZERO_EXC_MASK 0x00000002
	#define PVR2_FPU_EXC_MASK 0x00000001

	/* Debug and exception PVR masks */
	#define PVR3_DEBUG_ENABLED_MASK 0x80000000
	#define PVR3_NUMBER_OF_PC_BRK_MASK 0x1E000000
	#define PVR3_NUMBER_OF_RD_ADDR_BRK_MASK 0x00380000
	#define PVR3_NUMBER_OF_WR_ADDR_BRK_MASK 0x0000E000
	#define PVR3_FSL_LINKS_MASK 0x00000380

	/* ICache config PVR masks */
	#define PVR4_USE_ICACHE_MASK 0x80000000
	#define PVR4_ICACHE_ADDR_TAG_BITS_MASK 0x7C000000
	#define PVR4_ICACHE_USE_FSL_MASK 0x02000000
	#define PVR4_ICACHE_ALLOW_WR_MASK 0x01000000
	#define PVR4_ICACHE_LINE_LEN_MASK 0x00E00000
	#define PVR4_ICACHE_BYTE_SIZE_MASK 0x001F0000

	/* DCache config PVR masks */
	#define PVR5_USE_DCACHE_MASK 0x80000000
	#define PVR5_DCACHE_ADDR_TAG_BITS_MASK 0x7C000000
	#define PVR5_DCACHE_USE_FSL_MASK 0x02000000
	#define PVR5_DCACHE_ALLOW_WR_MASK 0x01000000
	#define PVR5_DCACHE_LINE_LEN_MASK 0x00E00000
	#define PVR5_DCACHE_BYTE_SIZE_MASK 0x001F0000
	#define PVR5_DCACHE_WRITEBACK_MASK 0x00004000

	/* ICache base address PVR mask */
	#define PVR6_ICACHE_BASEADDR_MASK 0xFFFFFFFF

	/* ICache high address PVR mask */
	#define PVR7_ICACHE_HIGHADDR_MASK 0xFFFFFFFF

	/* DCache base address PVR mask */
	#define PVR8_DCACHE_BASEADDR_MASK 0xFFFFFFFF

	/* DCache high address PVR mask */
	#define PVR9_DCACHE_HIGHADDR_MASK 0xFFFFFFFF

	/* Target family PVR mask */
	#define PVR10_TARGET_FAMILY_MASK 0xFF000000
	#define PVR10_ASIZE_SHIFT 18

	/* MMU descrtiption */
	#define PVR11_USE_MMU 0xC0000000
	#define PVR11_MMU_ITLB_SIZE 0x38000000
	#define PVR11_MMU_DTLB_SIZE 0x07000000
	#define PVR11_MMU_TLB_ACCESS 0x00C00000
	#define PVR11_MMU_ZONES 0x003E0000
	/* MSR Reset value PVR mask */
	#define PVR11_MSR_RESET_VALUE_MASK 0x000007FF

	#define C_PVR_NONE 0
	#define C_PVR_BASIC 1
	#define C_PVR_FULL 2

	/* CPU flags. */

	/* Condition codes. */
	#define CC_GE 5
	#define CC_GT 4
	#define CC_LE 3
	#define CC_LT 2
	#define CC_NE 1
	#define CC_EQ 0

	#define STREAM_EXCEPTION (1 << 0)
	#define STREAM_ATOMIC (1 << 1)
	#define STREAM_TEST (1 << 2)
	#define STREAM_CONTROL (1 << 3)
	#define STREAM_NONBLOCK (1 << 4)

	#define TARGET_INSN_START_EXTRA_WORDS 1

	/* use-non-secure property masks */
	#define USE_NON_SECURE_M_AXI_DP_MASK 0x1
	#define USE_NON_SECURE_M_AXI_IP_MASK 0x2
	#define USE_NON_SECURE_M_AXI_DC_MASK 0x4
	#define USE_NON_SECURE_M_AXI_IC_MASK 0x8

	struct CPUArchState {
	uint32_t bvalue; /* TCG temporary, only valid during a TB */
	uint32_t btarget; /* Full resolved branch destination */

	uint32_t imm;
	uint32_t regs[32];
	uint32_t pc;
	uint32_t msr; /* All bits of MSR except MSR[C] and MSR[CC] */
	uint32_t msr_c; /* MSR[C], in low bit; other bits must be 0 */
	target_ulong ear;
	uint32_t esr;
	uint32_t fsr;
	uint32_t btr;
	uint32_t edr;
	float_status fp_status;
	/* Stack protectors. Yes, it's a hw feature. */
	uint32_t slr, shr;

	/* lwx/swx reserved address */
	#define RES_ADDR_NONE 0xffffffff /* Use 0xffffffff to indicate no reservation */
	target_ulong res_addr;
	uint32_t res_val;

	/* Internal flags. */
	#define IMM_FLAG (1 << 0)
	#define BIMM_FLAG (1 << 1)
	#define ESR_ESS_FLAG (1 << 2) /* indicates ESR_ESS_MASK is present */
	/* MSR_EE (1 << 8) -- these 3 are not in iflags but tb_flags */
	/* MSR_UM (1 << 11) */
	/* MSR_VM (1 << 13) */
	/* ESR_ESS_MASK [11:5] -- unwind into iflags for unaligned excp */
	#define D_FLAG (1 << 12) /* Bit in ESR. */
	#define DRTI_FLAG (1 << 16)
	#define DRTE_FLAG (1 << 17)
	#define DRTB_FLAG (1 << 18)

	/* TB dependent CPUMBState. */
	#define IFLAGS_TB_MASK (D_FLAG \| BIMM_FLAG \| IMM_FLAG \| \
	DRTI_FLAG \| DRTE_FLAG \| DRTB_FLAG)
	#define MSR_TB_MASK (MSR_UM \| MSR_VM \| MSR_EE)

	uint32_t iflags;

	#if !defined(CONFIG_USER_ONLY)
	/* Unified MMU. */
	MicroBlazeMMU mmu;
	#endif

	/* Fields up to this point are cleared by a CPU reset */
	struct {} end_reset_fields;

	/* These fields are preserved on reset. */
	};

	/*
	* Microblaze Configuration Settings
	*
	* Note that the structure is sorted by type and size to minimize holes.
	*/
	typedef struct {
	char *version;

	uint64_t addr_mask;

	uint32_t base_vectors;
	uint32_t pvr_user2;
	uint32_t pvr_regs[13];

	uint8_t addr_size;
	uint8_t use_fpu;
	uint8_t use_hw_mul;
	uint8_t pvr_user1;
	uint8_t pvr;
	uint8_t mmu;
	uint8_t mmu_tlb_access;
	uint8_t mmu_zones;

	bool stackprot;
	bool use_barrel;
	bool use_div;
	bool use_msr_instr;
	bool use_pcmp_instr;
	bool use_mmu;
	uint8_t use_non_secure;
	bool dcache_writeback;
	bool endi;
	bool dopb_bus_exception;
	bool iopb_bus_exception;
	bool illegal_opcode_exception;
	bool opcode_0_illegal;
	bool div_zero_exception;
	bool unaligned_exceptions;
	} MicroBlazeCPUConfig;

	/**
	* MicroBlazeCPU:
	* @env: #CPUMBState
	*
	* A MicroBlaze CPU.
	*/
	struct ArchCPU {
	/< private >/
	CPUState parent_obj;

	/< public >/
	bool ns_axi_dp;
	bool ns_axi_ip;
	bool ns_axi_dc;
	bool ns_axi_ic;

	CPUNegativeOffsetState neg;
	CPUMBState env;
	MicroBlazeCPUConfig cfg;
	};


	#ifndef CONFIG_USER_ONLY
	void mb_cpu_do_interrupt(CPUState *cs);
	bool mb_cpu_exec_interrupt(CPUState *cs, int int_req);
	#endif /* !CONFIG_USER_ONLY */
	void mb_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
	MMUAccessType access_type,
	int mmu_idx, uintptr_t retaddr) QEMU_NORETURN;
	void mb_cpu_dump_state(CPUState cpu, FILE f, int flags);
	hwaddr mb_cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr addr,
	MemTxAttrs *attrs);
	int mb_cpu_gdb_read_register(CPUState cpu, GByteArray buf, int reg);
	int mb_cpu_gdb_write_register(CPUState cpu, uint8_t buf, int reg);

	static inline uint32_t mb_cpu_read_msr(const CPUMBState *env)
	{
	/* Replicate MSR[C] to MSR[CC]. */
	return env->msr \| (env->msr_c * (MSR_C \| MSR_CC));
	}

	static inline void mb_cpu_write_msr(CPUMBState *env, uint32_t val)
	{
	env->msr_c = (val >> 2) & 1;
	/*
	* Clear both MSR[C] and MSR[CC] from the saved copy.
	* MSR_PVR is not writable and is always clear.
	*/
	env->msr = val & ~(MSR_C \| MSR_CC \| MSR_PVR);
	}

	void mb_tcg_init(void);

	#define CPU_RESOLVING_TYPE TYPE_MICROBLAZE_CPU

	/* MMU modes definitions */
	#define MMU_NOMMU_IDX 0
	#define MMU_KERNEL_IDX 1
	#define MMU_USER_IDX 2
	/* See NB_MMU_MODES further up the file. */

	#include "exec/cpu-all.h"

	/* Ensure there is no overlap between the two masks. */
	QEMU_BUILD_BUG_ON(MSR_TB_MASK & IFLAGS_TB_MASK);

	static inline void cpu_get_tb_cpu_state(CPUMBState env, target_ulong pc,
	target_ulong cs_base, uint32_t flags)
	{
	*pc = env->pc;
	*flags = (env->iflags & IFLAGS_TB_MASK) \| (env->msr & MSR_TB_MASK);
	cs_base = (flags & IMM_FLAG ? env->imm : 0);
	}

	#if !defined(CONFIG_USER_ONLY)
	bool mb_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
	MMUAccessType access_type, int mmu_idx,
	bool probe, uintptr_t retaddr);

	void mb_cpu_transaction_failed(CPUState *cs, hwaddr physaddr, vaddr addr,
	unsigned size, MMUAccessType access_type,
	int mmu_idx, MemTxAttrs attrs,
	MemTxResult response, uintptr_t retaddr);
	#endif

	static inline int cpu_mmu_index(CPUMBState *env, bool ifetch)
	{
	MicroBlazeCPU *cpu = env_archcpu(env);

	/* Are we in nommu mode?. */
	if (!(env->msr & MSR_VM) \|\| !cpu->cfg.use_mmu) {
	return MMU_NOMMU_IDX;
	}

	if (env->msr & MSR_UM) {
	return MMU_USER_IDX;
	}
	return MMU_KERNEL_IDX;
	}

	#ifndef CONFIG_USER_ONLY
	extern const VMStateDescription vmstate_mb_cpu;
	#endif

	#endif