| #if !defined (__MIPS_CPU_H__) |
| #define __MIPS_CPU_H__ |
| |
| //#define DEBUG_OP |
| |
| #define TARGET_HAS_ICE 1 |
| |
| #define ELF_MACHINE EM_MIPS |
| |
| // TODO(digit): Remove this define. |
| #define CPUOldState struct CPUMIPSState |
| |
| #define CPUArchState struct CPUMIPSState |
| |
| #include "config.h" |
| #include "qemu-common.h" |
| #include "mips-defs.h" |
| #include "exec/cpu-defs.h" |
| #include "fpu/softfloat.h" |
| |
| // uint_fast8_t and uint_fast16_t not in <sys/int_types.h> |
| // XXX: move that elsewhere |
| #if defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10 |
| typedef unsigned char uint_fast8_t; |
| typedef unsigned int uint_fast16_t; |
| #endif |
| |
| struct CPUMIPSState; |
| |
| typedef struct r4k_tlb_t r4k_tlb_t; |
| struct r4k_tlb_t { |
| target_ulong VPN; |
| uint32_t PageMask; |
| uint_fast8_t ASID; |
| uint_fast16_t G:1; |
| uint_fast16_t C0:3; |
| uint_fast16_t C1:3; |
| uint_fast16_t V0:1; |
| uint_fast16_t V1:1; |
| uint_fast16_t D0:1; |
| uint_fast16_t D1:1; |
| target_ulong PFN[2]; |
| }; |
| |
| #if !defined(CONFIG_USER_ONLY) |
| typedef struct CPUMIPSTLBContext CPUMIPSTLBContext; |
| struct CPUMIPSTLBContext { |
| uint32_t nb_tlb; |
| int (*map_address) (struct CPUMIPSState *env, hwaddr *physical, int *prot, target_ulong address, int rw, int access_type); |
| void (*helper_tlbwi)(struct CPUMIPSState *env); |
| void (*helper_tlbwr)(struct CPUMIPSState *env); |
| void (*helper_tlbp)(struct CPUMIPSState *env); |
| void (*helper_tlbr)(struct CPUMIPSState *env); |
| union { |
| struct { |
| r4k_tlb_t tlb[MIPS_TLB_MAX]; |
| } r4k; |
| } mmu; |
| }; |
| #endif |
| |
| typedef union fpr_t fpr_t; |
| union fpr_t { |
| float64 fd; /* ieee double precision */ |
| float32 fs[2];/* ieee single precision */ |
| uint64_t d; /* binary double fixed-point */ |
| uint32_t w[2]; /* binary single fixed-point */ |
| }; |
| /* define FP_ENDIAN_IDX to access the same location |
| * in the fpr_t union regardless of the host endianness |
| */ |
| #if defined(HOST_WORDS_BIGENDIAN) |
| # define FP_ENDIAN_IDX 1 |
| #else |
| # define FP_ENDIAN_IDX 0 |
| #endif |
| |
| typedef struct CPUMIPSFPUContext CPUMIPSFPUContext; |
| struct CPUMIPSFPUContext { |
| /* Floating point registers */ |
| fpr_t fpr[32]; |
| float_status fp_status; |
| /* fpu implementation/revision register (fir) */ |
| uint32_t fcr0; |
| #define FCR0_F64 22 |
| #define FCR0_L 21 |
| #define FCR0_W 20 |
| #define FCR0_3D 19 |
| #define FCR0_PS 18 |
| #define FCR0_D 17 |
| #define FCR0_S 16 |
| #define FCR0_PRID 8 |
| #define FCR0_REV 0 |
| /* fcsr */ |
| uint32_t fcr31; |
| #define SET_FP_COND(num,env) do { ((env).fcr31) |= ((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0) |
| #define CLEAR_FP_COND(num,env) do { ((env).fcr31) &= ~((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0) |
| #define GET_FP_COND(env) ((((env).fcr31 >> 24) & 0xfe) | (((env).fcr31 >> 23) & 0x1)) |
| #define GET_FP_CAUSE(reg) (((reg) >> 12) & 0x3f) |
| #define GET_FP_ENABLE(reg) (((reg) >> 7) & 0x1f) |
| #define GET_FP_FLAGS(reg) (((reg) >> 2) & 0x1f) |
| #define SET_FP_CAUSE(reg,v) do { (reg) = ((reg) & ~(0x3f << 12)) | ((v & 0x3f) << 12); } while(0) |
| #define SET_FP_ENABLE(reg,v) do { (reg) = ((reg) & ~(0x1f << 7)) | ((v & 0x1f) << 7); } while(0) |
| #define SET_FP_FLAGS(reg,v) do { (reg) = ((reg) & ~(0x1f << 2)) | ((v & 0x1f) << 2); } while(0) |
| #define UPDATE_FP_FLAGS(reg,v) do { (reg) |= ((v & 0x1f) << 2); } while(0) |
| #define FP_INEXACT 1 |
| #define FP_UNDERFLOW 2 |
| #define FP_OVERFLOW 4 |
| #define FP_DIV0 8 |
| #define FP_INVALID 16 |
| #define FP_UNIMPLEMENTED 32 |
| }; |
| |
| #define NB_MMU_MODES 3 |
| |
| typedef struct CPUMIPSMVPContext CPUMIPSMVPContext; |
| struct CPUMIPSMVPContext { |
| int32_t CP0_MVPControl; |
| #define CP0MVPCo_CPA 3 |
| #define CP0MVPCo_STLB 2 |
| #define CP0MVPCo_VPC 1 |
| #define CP0MVPCo_EVP 0 |
| int32_t CP0_MVPConf0; |
| #define CP0MVPC0_M 31 |
| #define CP0MVPC0_TLBS 29 |
| #define CP0MVPC0_GS 28 |
| #define CP0MVPC0_PCP 27 |
| #define CP0MVPC0_PTLBE 16 |
| #define CP0MVPC0_TCA 15 |
| #define CP0MVPC0_PVPE 10 |
| #define CP0MVPC0_PTC 0 |
| int32_t CP0_MVPConf1; |
| #define CP0MVPC1_CIM 31 |
| #define CP0MVPC1_CIF 30 |
| #define CP0MVPC1_PCX 20 |
| #define CP0MVPC1_PCP2 10 |
| #define CP0MVPC1_PCP1 0 |
| }; |
| |
| typedef struct mips_def_t mips_def_t; |
| |
| #define MIPS_SHADOW_SET_MAX 16 |
| #define MIPS_TC_MAX 5 |
| #define MIPS_FPU_MAX 1 |
| #define MIPS_DSP_ACC 4 |
| |
| typedef struct TCState TCState; |
| struct TCState { |
| target_ulong gpr[32]; |
| target_ulong PC; |
| target_ulong HI[MIPS_DSP_ACC]; |
| target_ulong LO[MIPS_DSP_ACC]; |
| target_ulong ACX[MIPS_DSP_ACC]; |
| target_ulong DSPControl; |
| int32_t CP0_TCStatus; |
| #define CP0TCSt_TCU3 31 |
| #define CP0TCSt_TCU2 30 |
| #define CP0TCSt_TCU1 29 |
| #define CP0TCSt_TCU0 28 |
| #define CP0TCSt_TMX 27 |
| #define CP0TCSt_RNST 23 |
| #define CP0TCSt_TDS 21 |
| #define CP0TCSt_DT 20 |
| #define CP0TCSt_DA 15 |
| #define CP0TCSt_A 13 |
| #define CP0TCSt_TKSU 11 |
| #define CP0TCSt_IXMT 10 |
| #define CP0TCSt_TASID 0 |
| int32_t CP0_TCBind; |
| #define CP0TCBd_CurTC 21 |
| #define CP0TCBd_TBE 17 |
| #define CP0TCBd_CurVPE 0 |
| target_ulong CP0_TCHalt; |
| target_ulong CP0_TCContext; |
| target_ulong CP0_TCSchedule; |
| target_ulong CP0_TCScheFBack; |
| int32_t CP0_Debug_tcstatus; |
| }; |
| |
| typedef struct CPUMIPSState CPUMIPSState; |
| struct CPUMIPSState { |
| TCState active_tc; |
| CPUMIPSFPUContext active_fpu; |
| |
| uint32_t current_tc; |
| uint32_t current_fpu; |
| |
| uint32_t SEGBITS; |
| uint32_t PABITS; |
| target_ulong SEGMask; |
| target_ulong PAMask; |
| |
| int32_t CP0_Index; |
| /* CP0_MVP* are per MVP registers. */ |
| int32_t CP0_Random; |
| int32_t CP0_VPEControl; |
| #define CP0VPECo_YSI 21 |
| #define CP0VPECo_GSI 20 |
| #define CP0VPECo_EXCPT 16 |
| #define CP0VPECo_TE 15 |
| #define CP0VPECo_TargTC 0 |
| int32_t CP0_VPEConf0; |
| #define CP0VPEC0_M 31 |
| #define CP0VPEC0_XTC 21 |
| #define CP0VPEC0_TCS 19 |
| #define CP0VPEC0_SCS 18 |
| #define CP0VPEC0_DSC 17 |
| #define CP0VPEC0_ICS 16 |
| #define CP0VPEC0_MVP 1 |
| #define CP0VPEC0_VPA 0 |
| int32_t CP0_VPEConf1; |
| #define CP0VPEC1_NCX 20 |
| #define CP0VPEC1_NCP2 10 |
| #define CP0VPEC1_NCP1 0 |
| target_ulong CP0_YQMask; |
| target_ulong CP0_VPESchedule; |
| target_ulong CP0_VPEScheFBack; |
| int32_t CP0_VPEOpt; |
| #define CP0VPEOpt_IWX7 15 |
| #define CP0VPEOpt_IWX6 14 |
| #define CP0VPEOpt_IWX5 13 |
| #define CP0VPEOpt_IWX4 12 |
| #define CP0VPEOpt_IWX3 11 |
| #define CP0VPEOpt_IWX2 10 |
| #define CP0VPEOpt_IWX1 9 |
| #define CP0VPEOpt_IWX0 8 |
| #define CP0VPEOpt_DWX7 7 |
| #define CP0VPEOpt_DWX6 6 |
| #define CP0VPEOpt_DWX5 5 |
| #define CP0VPEOpt_DWX4 4 |
| #define CP0VPEOpt_DWX3 3 |
| #define CP0VPEOpt_DWX2 2 |
| #define CP0VPEOpt_DWX1 1 |
| #define CP0VPEOpt_DWX0 0 |
| target_ulong CP0_EntryLo0; |
| target_ulong CP0_EntryLo1; |
| #define CP0ENTRYLO_PFN 6 |
| #define CP0ENTRYLO_C 3 |
| #define CP0ENTRYLO_D 2 |
| #define CP0ENTRYLO_V 1 |
| #define CP0ENTRYLO_G 0 |
| target_ulong CP0_Context; |
| int32_t CP0_PageMask; |
| int32_t CP0_PageGrain; |
| int32_t CP0_Wired; |
| int32_t CP0_SRSConf0_rw_bitmask; |
| int32_t CP0_SRSConf0; |
| #define CP0SRSC0_M 31 |
| #define CP0SRSC0_SRS3 20 |
| #define CP0SRSC0_SRS2 10 |
| #define CP0SRSC0_SRS1 0 |
| int32_t CP0_SRSConf1_rw_bitmask; |
| int32_t CP0_SRSConf1; |
| #define CP0SRSC1_M 31 |
| #define CP0SRSC1_SRS6 20 |
| #define CP0SRSC1_SRS5 10 |
| #define CP0SRSC1_SRS4 0 |
| int32_t CP0_SRSConf2_rw_bitmask; |
| int32_t CP0_SRSConf2; |
| #define CP0SRSC2_M 31 |
| #define CP0SRSC2_SRS9 20 |
| #define CP0SRSC2_SRS8 10 |
| #define CP0SRSC2_SRS7 0 |
| int32_t CP0_SRSConf3_rw_bitmask; |
| int32_t CP0_SRSConf3; |
| #define CP0SRSC3_M 31 |
| #define CP0SRSC3_SRS12 20 |
| #define CP0SRSC3_SRS11 10 |
| #define CP0SRSC3_SRS10 0 |
| int32_t CP0_SRSConf4_rw_bitmask; |
| int32_t CP0_SRSConf4; |
| #define CP0SRSC4_SRS15 20 |
| #define CP0SRSC4_SRS14 10 |
| #define CP0SRSC4_SRS13 0 |
| int32_t CP0_HWREna; |
| target_ulong CP0_BadVAddr; |
| int32_t CP0_Count; |
| target_ulong CP0_EntryHi; |
| int32_t CP0_Compare; |
| int32_t CP0_Status; |
| #define CP0St_CU3 31 |
| #define CP0St_CU2 30 |
| #define CP0St_CU1 29 |
| #define CP0St_CU0 28 |
| #define CP0St_RP 27 |
| #define CP0St_FR 26 |
| #define CP0St_RE 25 |
| #define CP0St_MX 24 |
| #define CP0St_PX 23 |
| #define CP0St_BEV 22 |
| #define CP0St_TS 21 |
| #define CP0St_SR 20 |
| #define CP0St_NMI 19 |
| #define CP0St_IM 8 |
| #define CP0St_KX 7 |
| #define CP0St_SX 6 |
| #define CP0St_UX 5 |
| #define CP0St_KSU 3 |
| #define CP0St_ERL 2 |
| #define CP0St_EXL 1 |
| #define CP0St_IE 0 |
| int32_t CP0_IntCtl; |
| #define CP0IntCtl_IPTI 29 |
| #define CP0IntCtl_IPPC1 26 |
| #define CP0IntCtl_VS 5 |
| int32_t CP0_SRSCtl; |
| #define CP0SRSCtl_HSS 26 |
| #define CP0SRSCtl_EICSS 18 |
| #define CP0SRSCtl_ESS 12 |
| #define CP0SRSCtl_PSS 6 |
| #define CP0SRSCtl_CSS 0 |
| int32_t CP0_SRSMap; |
| #define CP0SRSMap_SSV7 28 |
| #define CP0SRSMap_SSV6 24 |
| #define CP0SRSMap_SSV5 20 |
| #define CP0SRSMap_SSV4 16 |
| #define CP0SRSMap_SSV3 12 |
| #define CP0SRSMap_SSV2 8 |
| #define CP0SRSMap_SSV1 4 |
| #define CP0SRSMap_SSV0 0 |
| int32_t CP0_Cause; |
| #define CP0Ca_BD 31 |
| #define CP0Ca_TI 30 |
| #define CP0Ca_CE 28 |
| #define CP0Ca_DC 27 |
| #define CP0Ca_PCI 26 |
| #define CP0Ca_IV 23 |
| #define CP0Ca_WP 22 |
| #define CP0Ca_IP 8 |
| #define CP0Ca_IP_mask 0x0000FF00 |
| #define CP0Ca_EC 2 |
| target_ulong CP0_EPC; |
| int32_t CP0_PRid; |
| int32_t CP0_EBase; |
| int32_t CP0_Config0; |
| #define CP0C0_M 31 |
| #define CP0C0_K23 28 |
| #define CP0C0_KU 25 |
| #define CP0C0_MDU 20 |
| #define CP0C0_MM 17 |
| #define CP0C0_BM 16 |
| #define CP0C0_BE 15 |
| #define CP0C0_AT 13 |
| #define CP0C0_AR 10 |
| #define CP0C0_MT 7 |
| #define CP0C0_VI 3 |
| #define CP0C0_K0 0 |
| int32_t CP0_Config1; |
| #define CP0C1_M 31 |
| #define CP0C1_MMU 25 |
| #define CP0C1_IS 22 |
| #define CP0C1_IL 19 |
| #define CP0C1_IA 16 |
| #define CP0C1_DS 13 |
| #define CP0C1_DL 10 |
| #define CP0C1_DA 7 |
| #define CP0C1_C2 6 |
| #define CP0C1_MD 5 |
| #define CP0C1_PC 4 |
| #define CP0C1_WR 3 |
| #define CP0C1_CA 2 |
| #define CP0C1_EP 1 |
| #define CP0C1_FP 0 |
| int32_t CP0_Config2; |
| #define CP0C2_M 31 |
| #define CP0C2_TU 28 |
| #define CP0C2_TS 24 |
| #define CP0C2_TL 20 |
| #define CP0C2_TA 16 |
| #define CP0C2_SU 12 |
| #define CP0C2_SS 8 |
| #define CP0C2_SL 4 |
| #define CP0C2_SA 0 |
| int32_t CP0_Config3; |
| #define CP0C3_M 31 |
| #define CP0C3_ISA_ON_EXC 16 |
| #define CP0C3_DSPP 10 |
| #define CP0C3_LPA 7 |
| #define CP0C3_VEIC 6 |
| #define CP0C3_VInt 5 |
| #define CP0C3_SP 4 |
| #define CP0C3_MT 2 |
| #define CP0C3_SM 1 |
| #define CP0C3_TL 0 |
| int32_t CP0_Config6; |
| int32_t CP0_Config7; |
| /* XXX: Maybe make LLAddr per-TC? */ |
| target_ulong lladdr; |
| target_ulong llval; |
| target_ulong llnewval; |
| target_ulong llreg; |
| target_ulong CP0_LLAddr_rw_bitmask; |
| int CP0_LLAddr_shift; |
| target_ulong CP0_WatchLo[8]; |
| int32_t CP0_WatchHi[8]; |
| target_ulong CP0_XContext; |
| int32_t CP0_Framemask; |
| int32_t CP0_Debug; |
| #define CP0DB_DBD 31 |
| #define CP0DB_DM 30 |
| #define CP0DB_LSNM 28 |
| #define CP0DB_Doze 27 |
| #define CP0DB_Halt 26 |
| #define CP0DB_CNT 25 |
| #define CP0DB_IBEP 24 |
| #define CP0DB_DBEP 21 |
| #define CP0DB_IEXI 20 |
| #define CP0DB_VER 15 |
| #define CP0DB_DEC 10 |
| #define CP0DB_SSt 8 |
| #define CP0DB_DINT 5 |
| #define CP0DB_DIB 4 |
| #define CP0DB_DDBS 3 |
| #define CP0DB_DDBL 2 |
| #define CP0DB_DBp 1 |
| #define CP0DB_DSS 0 |
| target_ulong CP0_DEPC; |
| int32_t CP0_Performance0; |
| int32_t CP0_TagLo; |
| int32_t CP0_DataLo; |
| int32_t CP0_TagHi; |
| int32_t CP0_DataHi; |
| target_ulong CP0_ErrorEPC; |
| int32_t CP0_DESAVE; |
| /* We waste some space so we can handle shadow registers like TCs. */ |
| TCState tcs[MIPS_SHADOW_SET_MAX]; |
| CPUMIPSFPUContext fpus[MIPS_FPU_MAX]; |
| /* QEMU */ |
| int error_code; |
| uint32_t hflags; /* CPU State */ |
| /* TMASK defines different execution modes */ |
| #define MIPS_HFLAG_TMASK 0x03FF |
| #define MIPS_HFLAG_MODE 0x0007 /* execution modes */ |
| /* The KSU flags must be the lowest bits in hflags. The flag order |
| must be the same as defined for CP0 Status. This allows to use |
| the bits as the value of mmu_idx. */ |
| #define MIPS_HFLAG_KSU 0x0003 /* kernel/supervisor/user mode mask */ |
| #define MIPS_HFLAG_UM 0x0002 /* user mode flag */ |
| #define MIPS_HFLAG_SM 0x0001 /* supervisor mode flag */ |
| #define MIPS_HFLAG_KM 0x0000 /* kernel mode flag */ |
| #define MIPS_HFLAG_DM 0x0004 /* Debug mode */ |
| #define MIPS_HFLAG_64 0x0008 /* 64-bit instructions enabled */ |
| #define MIPS_HFLAG_CP0 0x0010 /* CP0 enabled */ |
| #define MIPS_HFLAG_FPU 0x0020 /* FPU enabled */ |
| #define MIPS_HFLAG_F64 0x0040 /* 64-bit FPU enabled */ |
| /* True if the MIPS IV COP1X instructions can be used. This also |
| controls the non-COP1X instructions RECIP.S, RECIP.D, RSQRT.S |
| and RSQRT.D. */ |
| #define MIPS_HFLAG_COP1X 0x0080 /* COP1X instructions enabled */ |
| #define MIPS_HFLAG_RE 0x0100 /* Reversed endianness */ |
| #define MIPS_HFLAG_UX 0x0200 /* 64-bit user mode */ |
| /* If translation is interrupted between the branch instruction and |
| * the delay slot, record what type of branch it is so that we can |
| * resume translation properly. It might be possible to reduce |
| * this from three bits to two. */ |
| #define MIPS_HFLAG_BMASK 0x1C00 |
| #define MIPS_HFLAG_B 0x0400 /* Unconditional branch */ |
| #define MIPS_HFLAG_BC 0x0800 /* Conditional branch */ |
| #define MIPS_HFLAG_BL 0x0C00 /* Likely branch */ |
| #define MIPS_HFLAG_BR 0x1000 /* branch to register (can't link TB) */ |
| target_ulong btarget; /* Jump / branch target */ |
| target_ulong bcond; /* Branch condition (if needed) */ |
| |
| int SYNCI_Step; /* Address step size for SYNCI */ |
| int CCRes; /* Cycle count resolution/divisor */ |
| uint32_t CP0_Status_rw_bitmask; /* Read/write bits in CP0_Status */ |
| uint32_t CP0_TCStatus_rw_bitmask; /* Read/write bits in CP0_TCStatus */ |
| int insn_flags; /* Supported instruction set */ |
| |
| target_ulong tls_value; /* For usermode emulation */ |
| |
| CPU_COMMON |
| |
| /* Fields from here on are preserved across CPU reset. */ |
| CPUMIPSMVPContext *mvp; |
| #if !defined(CONFIG_USER_ONLY) |
| CPUMIPSTLBContext *tlb; |
| #endif |
| |
| const mips_def_t *cpu_model; |
| void *irq[8]; |
| struct QEMUTimer *timer; /* Internal timer */ |
| }; |
| |
| #include "cpu-qom.h" |
| |
| int no_mmu_map_address (CPUMIPSState *env, hwaddr *physical, int *prot, |
| target_ulong address, int rw, int access_type); |
| int fixed_mmu_map_address (CPUMIPSState *env, hwaddr *physical, int *prot, |
| target_ulong address, int rw, int access_type); |
| int r4k_map_address (CPUMIPSState *env, hwaddr *physical, int *prot, |
| target_ulong address, int rw, int access_type); |
| void r4k_helper_tlbwi(CPUMIPSState *env); |
| void r4k_helper_tlbwr(CPUMIPSState *env); |
| void r4k_helper_tlbp(CPUMIPSState *env); |
| void r4k_helper_tlbr(CPUMIPSState *env); |
| void mips_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...)); |
| |
| void cpu_unassigned_access(CPUState* cpu, hwaddr addr, |
| int is_write, int is_exec, int unused, int size); |
| |
| #define cpu_init cpu_mips_init |
| #define cpu_exec cpu_mips_exec |
| #define cpu_gen_code cpu_mips_gen_code |
| #define cpu_signal_handler cpu_mips_signal_handler |
| #define cpu_list mips_cpu_list |
| |
| #define CPU_SAVE_VERSION 3 |
| |
| // NOTE(digit): Came from cpu-all.h, to be removed later. |
| #define CPU_INTERRUPT_TIMER 0x08 /* internal timer exception pending */ |
| |
| /* MMU modes definitions. We carefully match the indices with our |
| hflags layout. */ |
| #define MMU_MODE0_SUFFIX _kernel |
| #define MMU_MODE1_SUFFIX _super |
| #define MMU_MODE2_SUFFIX _user |
| #define MMU_USER_IDX 2 |
| static inline int cpu_mmu_index (CPUMIPSState *env) |
| { |
| return env->hflags & MIPS_HFLAG_KSU; |
| } |
| |
| static inline int is_cpu_user (CPUMIPSState *env) |
| { |
| #ifdef CONFIG_USER_ONLY |
| return 1; |
| #else |
| return ((env->CP0_Status & |
| ((3 << CP0St_KSU) | (1 << CP0St_ERL) | (1 << CP0St_EXL))) == (3 << CP0St_KSU)); |
| #endif // CONFIG_USER_ONLY |
| } |
| |
| static inline void cpu_clone_regs(CPUMIPSState *env, target_ulong newsp) |
| { |
| if (newsp) |
| env->active_tc.gpr[29] = newsp; |
| env->active_tc.gpr[7] = 0; |
| env->active_tc.gpr[2] = 0; |
| } |
| |
| static inline int cpu_mips_hw_interrupts_pending(CPUMIPSState *env) |
| { |
| int32_t pending; |
| int32_t status; |
| int r; |
| |
| if (!(env->CP0_Status & (1 << CP0St_IE)) || |
| (env->CP0_Status & (1 << CP0St_EXL)) || |
| (env->CP0_Status & (1 << CP0St_ERL)) || |
| (env->hflags & MIPS_HFLAG_DM)) { |
| /* Interrupts are disabled */ |
| return 0; |
| } |
| |
| pending = env->CP0_Cause & CP0Ca_IP_mask; |
| status = env->CP0_Status & CP0Ca_IP_mask; |
| |
| if (env->CP0_Config3 & (1 << CP0C3_VEIC)) { |
| /* A MIPS configured with a vectorizing external interrupt controller |
| will feed a vector into the Cause pending lines. The core treats |
| the status lines as a vector level, not as indiviual masks. */ |
| r = pending > status; |
| } else { |
| /* A MIPS configured with compatibility or VInt (Vectored Interrupts) |
| treats the pending lines as individual interrupt lines, the status |
| lines are individual masks. */ |
| r = pending & status; |
| } |
| return r; |
| } |
| |
| #include "exec/cpu-all.h" |
| #include "exec/exec-all.h" |
| |
| /* Memory access type : |
| * may be needed for precise access rights control and precise exceptions. |
| */ |
| enum { |
| /* 1 bit to define user level / supervisor access */ |
| ACCESS_USER = 0x00, |
| ACCESS_SUPER = 0x01, |
| /* 1 bit to indicate direction */ |
| ACCESS_STORE = 0x02, |
| /* Type of instruction that generated the access */ |
| ACCESS_CODE = 0x10, /* Code fetch access */ |
| ACCESS_INT = 0x20, /* Integer load/store access */ |
| ACCESS_FLOAT = 0x30, /* floating point load/store access */ |
| }; |
| |
| /* Exceptions */ |
| enum { |
| EXCP_NONE = -1, |
| EXCP_RESET = 0, |
| EXCP_SRESET, |
| EXCP_DSS, |
| EXCP_DINT, |
| EXCP_DDBL, |
| EXCP_DDBS, |
| EXCP_NMI, |
| EXCP_MCHECK, |
| EXCP_EXT_INTERRUPT, /* 8 */ |
| EXCP_DFWATCH, |
| EXCP_DIB, |
| EXCP_IWATCH, |
| EXCP_AdEL, |
| EXCP_AdES, |
| EXCP_TLBF, |
| EXCP_IBE, |
| EXCP_DBp, /* 16 */ |
| EXCP_SYSCALL, |
| EXCP_BREAK, |
| EXCP_CpU, |
| EXCP_RI, |
| EXCP_OVERFLOW, |
| EXCP_TRAP, |
| EXCP_FPE, |
| EXCP_DWATCH, /* 24 */ |
| EXCP_LTLBL, |
| EXCP_TLBL, |
| EXCP_TLBS, |
| EXCP_DBE, |
| EXCP_THREAD, |
| EXCP_MDMX, |
| EXCP_C2E, |
| EXCP_CACHE, /* 32 */ |
| |
| EXCP_LAST = EXCP_CACHE, |
| }; |
| /* Dummy exception for conditional stores. */ |
| #define EXCP_SC 0x100 |
| |
| /* |
| * This is an interrnally generated WAKE request line. |
| * It is driven by the CPU itself. Raised when the MT |
| * block wants to wake a VPE from an inactive state and |
| * cleared when VPE goes from active to inactive. |
| */ |
| #define CPU_INTERRUPT_WAKE CPU_INTERRUPT_TGT_INT_0 |
| |
| int cpu_mips_exec(CPUMIPSState *s); |
| CPUMIPSState *cpu_mips_init(const char *cpu_model); |
| //~ uint32_t cpu_mips_get_clock (void); |
| int cpu_mips_signal_handler(int host_signum, void *pinfo, void *puc); |
| |
| /* mips_timer.c */ |
| uint32_t cpu_mips_get_random (CPUMIPSState *env); |
| uint32_t cpu_mips_get_count (CPUMIPSState *env); |
| void cpu_mips_store_count (CPUMIPSState *env, uint32_t value); |
| void cpu_mips_store_compare (CPUMIPSState *env, uint32_t value); |
| void cpu_mips_start_count(CPUMIPSState *env); |
| void cpu_mips_stop_count(CPUMIPSState *env); |
| |
| /* mips_int.c */ |
| void cpu_mips_update_irq (CPUMIPSState *env); |
| |
| /* helper.c */ |
| int cpu_mips_handle_mmu_fault (CPUMIPSState *env, target_ulong address, int rw, |
| int mmu_idx); |
| #define cpu_handle_mmu_fault cpu_mips_handle_mmu_fault |
| void do_interrupt (CPUMIPSState *env); |
| hwaddr cpu_mips_translate_address (CPUMIPSState *env, target_ulong address, |
| int rw); |
| |
| static inline void cpu_get_tb_cpu_state(CPUMIPSState *env, target_ulong *pc, |
| target_ulong *cs_base, int *flags) |
| { |
| *pc = env->active_tc.PC; |
| *cs_base = 0; |
| *flags = env->hflags & (MIPS_HFLAG_TMASK | MIPS_HFLAG_BMASK); |
| } |
| |
| static inline void cpu_set_tls(CPUMIPSState *env, target_ulong newtls) |
| { |
| env->tls_value = newtls; |
| } |
| |
| static inline bool cpu_has_work(CPUState *cpu) |
| { |
| int has_work = 0; |
| |
| /* It is implementation dependent if non-enabled interrupts |
| wake-up the CPU, however most of the implementations only |
| check for interrupts that can be taken. */ |
| if ((cpu->interrupt_request & CPU_INTERRUPT_HARD) && |
| cpu_mips_hw_interrupts_pending(cpu->env_ptr)) { |
| has_work = 1; |
| } |
| |
| if (cpu->interrupt_request & CPU_INTERRUPT_TIMER) { |
| has_work = 1; |
| } |
| |
| return has_work; |
| } |
| |
| static inline void cpu_pc_from_tb(CPUMIPSState *env, TranslationBlock *tb) |
| { |
| env->active_tc.PC = tb->pc; |
| env->hflags &= ~MIPS_HFLAG_BMASK; |
| env->hflags |= tb->flags & MIPS_HFLAG_BMASK; |
| } |
| |
| #endif /* !defined (__MIPS_CPU_H__) */ |
