diff options
Diffstat (limited to 'target/mips/cpu.h')
| -rw-r--r-- | target/mips/cpu.h | 1069 |
1 files changed, 1069 insertions, 0 deletions
diff --git a/target/mips/cpu.h b/target/mips/cpu.h new file mode 100644 index 0000000000..5182dc74ff --- /dev/null +++ b/target/mips/cpu.h @@ -0,0 +1,1069 @@ +#ifndef MIPS_CPU_H +#define MIPS_CPU_H + +//#define DEBUG_OP + +#define ALIGNED_ONLY + +#define CPUArchState struct CPUMIPSState + +#include "qemu-common.h" +#include "cpu-qom.h" +#include "mips-defs.h" +#include "exec/cpu-defs.h" +#include "fpu/softfloat.h" + +struct CPUMIPSState; + +typedef struct r4k_tlb_t r4k_tlb_t; +struct r4k_tlb_t { + target_ulong VPN; + uint32_t PageMask; + uint16_t ASID; + unsigned int G:1; + unsigned int C0:3; + unsigned int C1:3; + unsigned int V0:1; + unsigned int V1:1; + unsigned int D0:1; + unsigned int D1:1; + unsigned int XI0:1; + unsigned int XI1:1; + unsigned int RI0:1; + unsigned int RI1:1; + unsigned int EHINV:1; + uint64_t PFN[2]; +}; + +#if !defined(CONFIG_USER_ONLY) +typedef struct CPUMIPSTLBContext CPUMIPSTLBContext; +struct CPUMIPSTLBContext { + uint32_t nb_tlb; + uint32_t tlb_in_use; + 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); + void (*helper_tlbinv)(struct CPUMIPSState *env); + void (*helper_tlbinvf)(struct CPUMIPSState *env); + union { + struct { + r4k_tlb_t tlb[MIPS_TLB_MAX]; + } r4k; + } mmu; +}; +#endif + +/* MSA Context */ +#define MSA_WRLEN (128) + +enum CPUMIPSMSADataFormat { + DF_BYTE = 0, + DF_HALF, + DF_WORD, + DF_DOUBLE +}; + +typedef union wr_t wr_t; +union wr_t { + int8_t b[MSA_WRLEN/8]; + int16_t h[MSA_WRLEN/16]; + int32_t w[MSA_WRLEN/32]; + int64_t d[MSA_WRLEN/64]; +}; + +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 */ +/* FPU/MSA register mapping is not tested on big-endian hosts. */ + wr_t wr; /* vector data */ +}; +/* 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_FREP 29 +#define FCR0_UFRP 28 +#define FCR0_HAS2008 23 +#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_rw_bitmask; + uint32_t fcr31; +#define FCR31_FS 24 +#define FCR31_ABS2008 19 +#define FCR31_NAN2008 18 +#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 +#define TARGET_INSN_START_EXTRA_WORDS 2 + +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 +#define MIPS_KSCRATCH_NUM 6 +#define MIPS_MAAR_MAX 16 /* Must be an even number. */ + +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; + target_ulong CP0_UserLocal; + + int32_t msacsr; + +#define MSACSR_FS 24 +#define MSACSR_FS_MASK (1 << MSACSR_FS) +#define MSACSR_NX 18 +#define MSACSR_NX_MASK (1 << MSACSR_NX) +#define MSACSR_CEF 2 +#define MSACSR_CEF_MASK (0xffff << MSACSR_CEF) +#define MSACSR_RM 0 +#define MSACSR_RM_MASK (0x3 << MSACSR_RM) +#define MSACSR_MASK (MSACSR_RM_MASK | MSACSR_CEF_MASK | MSACSR_NX_MASK | \ + MSACSR_FS_MASK) + + float_status msa_fp_status; +}; + +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; +#if defined(TARGET_MIPS64) +# define PABITS_BASE 36 +#else +# define PABITS_BASE 32 +#endif + target_ulong SEGMask; + uint64_t PAMask; +#define PAMASK_BASE ((1ULL << PABITS_BASE) - 1) + + int32_t msair; +#define MSAIR_ProcID 8 +#define MSAIR_Rev 0 + + int32_t CP0_Index; + /* CP0_MVP* are per MVP registers. */ + int32_t CP0_VPControl; +#define CP0VPCtl_DIS 0 + 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 + uint64_t CP0_EntryLo0; + uint64_t CP0_EntryLo1; +#if defined(TARGET_MIPS64) +# define CP0EnLo_RI 63 +# define CP0EnLo_XI 62 +#else +# define CP0EnLo_RI 31 +# define CP0EnLo_XI 30 +#endif + int32_t CP0_GlobalNumber; +#define CP0GN_VPId 0 + target_ulong CP0_Context; + target_ulong CP0_KScratch[MIPS_KSCRATCH_NUM]; + int32_t CP0_PageMask; + int32_t CP0_PageGrain_rw_bitmask; + int32_t CP0_PageGrain; +#define CP0PG_RIE 31 +#define CP0PG_XIE 30 +#define CP0PG_ELPA 29 +#define CP0PG_IEC 27 + 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; + uint32_t CP0_BadInstr; + uint32_t CP0_BadInstrP; + int32_t CP0_Count; + target_ulong CP0_EntryHi; +#define CP0EnHi_EHINV 10 + target_ulong CP0_EntryHi_ASID_mask; + 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_IPPCI 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; + target_ulong CP0_CMGCRBase; + int32_t CP0_Config0; +#define CP0C0_M 31 +#define CP0C0_K23 28 +#define CP0C0_KU 25 +#define CP0C0_MDU 20 +#define CP0C0_MM 18 +#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_BPG 30 +#define CP0C3_CMGCR 29 +#define CP0C3_MSAP 28 +#define CP0C3_BP 27 +#define CP0C3_BI 26 +#define CP0C3_IPLW 21 +#define CP0C3_MMAR 18 +#define CP0C3_MCU 17 +#define CP0C3_ISA_ON_EXC 16 +#define CP0C3_ISA 14 +#define CP0C3_ULRI 13 +#define CP0C3_RXI 12 +#define CP0C3_DSP2P 11 +#define CP0C3_DSPP 10 +#define CP0C3_LPA 7 +#define CP0C3_VEIC 6 +#define CP0C3_VInt 5 +#define CP0C3_SP 4 +#define CP0C3_CDMM 3 +#define CP0C3_MT 2 +#define CP0C3_SM 1 +#define CP0C3_TL 0 + int32_t CP0_Config4; + int32_t CP0_Config4_rw_bitmask; +#define CP0C4_M 31 +#define CP0C4_IE 29 +#define CP0C4_AE 28 +#define CP0C4_KScrExist 16 +#define CP0C4_MMUExtDef 14 +#define CP0C4_FTLBPageSize 8 +#define CP0C4_FTLBWays 4 +#define CP0C4_FTLBSets 0 +#define CP0C4_MMUSizeExt 0 + int32_t CP0_Config5; + int32_t CP0_Config5_rw_bitmask; +#define CP0C5_M 31 +#define CP0C5_K 30 +#define CP0C5_CV 29 +#define CP0C5_EVA 28 +#define CP0C5_MSAEn 27 +#define CP0C5_XNP 13 +#define CP0C5_UFE 9 +#define CP0C5_FRE 8 +#define CP0C5_VP 7 +#define CP0C5_SBRI 6 +#define CP0C5_MVH 5 +#define CP0C5_LLB 4 +#define CP0C5_MRP 3 +#define CP0C5_UFR 2 +#define CP0C5_NFExists 0 + int32_t CP0_Config6; + int32_t CP0_Config7; + uint64_t CP0_MAAR[MIPS_MAAR_MAX]; + int32_t CP0_MAARI; + /* XXX: Maybe make LLAddr per-TC? */ + uint64_t lladdr; + target_ulong llval; + target_ulong llnewval; + target_ulong llreg; + uint64_t CP0_LLAddr_rw_bitmask; + int CP0_LLAddr_shift; + target_ulong CP0_WatchLo[8]; + int32_t CP0_WatchHi[8]; +#define CP0WH_ASID 16 + 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_ErrCtl; +#define CP0EC_WST 29 +#define CP0EC_SPR 28 +#define CP0EC_ITC 26 + uint64_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; +#define EXCP_TLB_NOMATCH 0x1 +#define EXCP_INST_NOTAVAIL 0x2 /* No valid instruction word for BadInstr */ + uint32_t hflags; /* CPU State */ + /* TMASK defines different execution modes */ +#define MIPS_HFLAG_TMASK 0xF5807FF +#define MIPS_HFLAG_MODE 0x00007 /* 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 0x00003 /* kernel/supervisor/user mode mask */ +#define MIPS_HFLAG_UM 0x00002 /* user mode flag */ +#define MIPS_HFLAG_SM 0x00001 /* supervisor mode flag */ +#define MIPS_HFLAG_KM 0x00000 /* kernel mode flag */ +#define MIPS_HFLAG_DM 0x00004 /* Debug mode */ +#define MIPS_HFLAG_64 0x00008 /* 64-bit instructions enabled */ +#define MIPS_HFLAG_CP0 0x00010 /* CP0 enabled */ +#define MIPS_HFLAG_FPU 0x00020 /* FPU enabled */ +#define MIPS_HFLAG_F64 0x00040 /* 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 0x00080 /* COP1X instructions enabled */ +#define MIPS_HFLAG_RE 0x00100 /* Reversed endianness */ +#define MIPS_HFLAG_AWRAP 0x00200 /* 32-bit compatibility address wrapping */ +#define MIPS_HFLAG_M16 0x00400 /* MIPS16 mode flag */ +#define MIPS_HFLAG_M16_SHIFT 10 + /* 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_BASE 0x803800 +#define MIPS_HFLAG_B 0x00800 /* Unconditional branch */ +#define MIPS_HFLAG_BC 0x01000 /* Conditional branch */ +#define MIPS_HFLAG_BL 0x01800 /* Likely branch */ +#define MIPS_HFLAG_BR 0x02000 /* branch to register (can't link TB) */ + /* Extra flags about the current pending branch. */ +#define MIPS_HFLAG_BMASK_EXT 0x7C000 +#define MIPS_HFLAG_B16 0x04000 /* branch instruction was 16 bits */ +#define MIPS_HFLAG_BDS16 0x08000 /* branch requires 16-bit delay slot */ +#define MIPS_HFLAG_BDS32 0x10000 /* branch requires 32-bit delay slot */ +#define MIPS_HFLAG_BDS_STRICT 0x20000 /* Strict delay slot size */ +#define MIPS_HFLAG_BX 0x40000 /* branch exchanges execution mode */ +#define MIPS_HFLAG_BMASK (MIPS_HFLAG_BMASK_BASE | MIPS_HFLAG_BMASK_EXT) + /* MIPS DSP resources access. */ +#define MIPS_HFLAG_DSP 0x080000 /* Enable access to MIPS DSP resources. */ +#define MIPS_HFLAG_DSPR2 0x100000 /* Enable access to MIPS DSPR2 resources. */ + /* Extra flag about HWREna register. */ +#define MIPS_HFLAG_HWRENA_ULR 0x200000 /* ULR bit from HWREna is set. */ +#define MIPS_HFLAG_SBRI 0x400000 /* R6 SDBBP causes RI excpt. in user mode */ +#define MIPS_HFLAG_FBNSLOT 0x800000 /* Forbidden slot */ +#define MIPS_HFLAG_MSA 0x1000000 +#define MIPS_HFLAG_FRE 0x2000000 /* FRE enabled */ +#define MIPS_HFLAG_ELPA 0x4000000 +#define MIPS_HFLAG_ITC_CACHE 0x8000000 /* CACHE instr. operates on ITC tag */ + 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 */ + + 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]; + QEMUTimer *timer; /* Internal timer */ + MemoryRegion *itc_tag; /* ITC Configuration Tags */ + target_ulong exception_base; /* ExceptionBase input to the core */ +}; + +/** + * MIPSCPU: + * @env: #CPUMIPSState + * + * A MIPS CPU. + */ +struct MIPSCPU { + /*< private >*/ + CPUState parent_obj; + /*< public >*/ + + CPUMIPSState env; +}; + +static inline MIPSCPU *mips_env_get_cpu(CPUMIPSState *env) +{ + return container_of(env, MIPSCPU, env); +} + +#define ENV_GET_CPU(e) CPU(mips_env_get_cpu(e)) + +#define ENV_OFFSET offsetof(MIPSCPU, env) + +#ifndef CONFIG_USER_ONLY +extern const struct VMStateDescription vmstate_mips_cpu; +#endif + +void mips_cpu_do_interrupt(CPUState *cpu); +bool mips_cpu_exec_interrupt(CPUState *cpu, int int_req); +void mips_cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf, + int flags); +hwaddr mips_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); +int mips_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg); +int mips_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); +void mips_cpu_do_unaligned_access(CPUState *cpu, vaddr addr, + MMUAccessType access_type, + int mmu_idx, uintptr_t retaddr); + +#if !defined(CONFIG_USER_ONLY) +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 r4k_helper_tlbinv(CPUMIPSState *env); +void r4k_helper_tlbinvf(CPUMIPSState *env); + +void mips_cpu_unassigned_access(CPUState *cpu, hwaddr addr, + bool is_write, bool is_exec, int unused, + unsigned size); +#endif + +void mips_cpu_list (FILE *f, fprintf_function cpu_fprintf); + +#define cpu_signal_handler cpu_mips_signal_handler +#define cpu_list mips_cpu_list + +extern void cpu_wrdsp(uint32_t rs, uint32_t mask_num, CPUMIPSState *env); +extern uint32_t cpu_rddsp(uint32_t mask_num, CPUMIPSState *env); + +/* 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, bool ifetch) +{ + return env->hflags & MIPS_HFLAG_KSU; +} + +static inline bool cpu_mips_hw_interrupts_enabled(CPUMIPSState *env) +{ + return (env->CP0_Status & (1 << CP0St_IE)) && + !(env->CP0_Status & (1 << CP0St_EXL)) && + !(env->CP0_Status & (1 << CP0St_ERL)) && + !(env->hflags & MIPS_HFLAG_DM) && + /* Note that the TCStatus IXMT field is initialized to zero, + and only MT capable cores can set it to one. So we don't + need to check for MT capabilities here. */ + !(env->active_tc.CP0_TCStatus & (1 << CP0TCSt_IXMT)); +} + +/* Check if there is pending and not masked out interrupt */ +static inline bool cpu_mips_hw_interrupts_pending(CPUMIPSState *env) +{ + int32_t pending; + int32_t status; + bool r; + + 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) != 0; + } + return r; +} + +#include "exec/cpu-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_DSPDIS, + EXCP_MSADIS, + EXCP_MSAFPE, + EXCP_TLBXI, + EXCP_TLBRI, + + EXCP_LAST = EXCP_TLBRI, +}; +/* 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 + +void mips_tcg_init(void); +MIPSCPU *cpu_mips_init(const char *cpu_model); +int cpu_mips_signal_handler(int host_signum, void *pinfo, void *puc); + +#define cpu_init(cpu_model) CPU(cpu_mips_init(cpu_model)) +bool cpu_supports_cps_smp(const char *cpu_model); +void cpu_set_exception_base(int vp_index, target_ulong address); + +/* TODO QOM'ify CPU reset and remove */ +void cpu_state_reset(CPUMIPSState *s); + +/* 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_soft_irq(CPUMIPSState *env, int irq, int level); + +/* helper.c */ +int mips_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw, + int mmu_idx); + +/* op_helper.c */ +uint32_t float_class_s(uint32_t arg, float_status *fst); +uint64_t float_class_d(uint64_t arg, float_status *fst); + +#if !defined(CONFIG_USER_ONLY) +void r4k_invalidate_tlb (CPUMIPSState *env, int idx, int use_extra); +hwaddr cpu_mips_translate_address (CPUMIPSState *env, target_ulong address, + int rw); +#endif +target_ulong exception_resume_pc (CPUMIPSState *env); + +/* op_helper.c */ +extern unsigned int ieee_rm[]; +int ieee_ex_to_mips(int xcpt); + +static inline void restore_rounding_mode(CPUMIPSState *env) +{ + set_float_rounding_mode(ieee_rm[env->active_fpu.fcr31 & 3], + &env->active_fpu.fp_status); +} + +static inline void restore_flush_mode(CPUMIPSState *env) +{ + set_flush_to_zero((env->active_fpu.fcr31 & (1 << FCR31_FS)) != 0, + &env->active_fpu.fp_status); +} + +static inline void restore_snan_bit_mode(CPUMIPSState *env) +{ + set_snan_bit_is_one((env->active_fpu.fcr31 & (1 << FCR31_NAN2008)) == 0, + &env->active_fpu.fp_status); +} + +static inline void restore_fp_status(CPUMIPSState *env) +{ + restore_rounding_mode(env); + restore_flush_mode(env); + restore_snan_bit_mode(env); +} + +static inline void restore_msa_fp_status(CPUMIPSState *env) +{ + float_status *status = &env->active_tc.msa_fp_status; + int rounding_mode = (env->active_tc.msacsr & MSACSR_RM_MASK) >> MSACSR_RM; + bool flush_to_zero = (env->active_tc.msacsr & MSACSR_FS_MASK) != 0; + + set_float_rounding_mode(ieee_rm[rounding_mode], status); + set_flush_to_zero(flush_to_zero, status); + set_flush_inputs_to_zero(flush_to_zero, status); +} + +static inline void restore_pamask(CPUMIPSState *env) +{ + if (env->hflags & MIPS_HFLAG_ELPA) { + env->PAMask = (1ULL << env->PABITS) - 1; + } else { + env->PAMask = PAMASK_BASE; + } +} + +static inline void cpu_get_tb_cpu_state(CPUMIPSState *env, target_ulong *pc, + target_ulong *cs_base, uint32_t *flags) +{ + *pc = env->active_tc.PC; + *cs_base = 0; + *flags = env->hflags & (MIPS_HFLAG_TMASK | MIPS_HFLAG_BMASK | + MIPS_HFLAG_HWRENA_ULR); +} + +static inline int mips_vpe_active(CPUMIPSState *env) +{ + int active = 1; + + /* Check that the VPE is enabled. */ + if (!(env->mvp->CP0_MVPControl & (1 << CP0MVPCo_EVP))) { + active = 0; + } + /* Check that the VPE is activated. */ + if (!(env->CP0_VPEConf0 & (1 << CP0VPEC0_VPA))) { + active = 0; + } + + /* Now verify that there are active thread contexts in the VPE. + + This assumes the CPU model will internally reschedule threads + if the active one goes to sleep. If there are no threads available + the active one will be in a sleeping state, and we can turn off + the entire VPE. */ + if (!(env->active_tc.CP0_TCStatus & (1 << CP0TCSt_A))) { + /* TC is not activated. */ + active = 0; + } + if (env->active_tc.CP0_TCHalt & 1) { + /* TC is in halt state. */ + active = 0; + } + + return active; +} + +static inline int mips_vp_active(CPUMIPSState *env) +{ + CPUState *other_cs = first_cpu; + + /* Check if the VP disabled other VPs (which means the VP is enabled) */ + if ((env->CP0_VPControl >> CP0VPCtl_DIS) & 1) { + return 1; + } + + /* Check if the virtual processor is disabled due to a DVP */ + CPU_FOREACH(other_cs) { + MIPSCPU *other_cpu = MIPS_CPU(other_cs); + if ((&other_cpu->env != env) && + ((other_cpu->env.CP0_VPControl >> CP0VPCtl_DIS) & 1)) { + return 0; + } + } + return 1; +} + +static inline void compute_hflags(CPUMIPSState *env) +{ + env->hflags &= ~(MIPS_HFLAG_COP1X | MIPS_HFLAG_64 | MIPS_HFLAG_CP0 | + MIPS_HFLAG_F64 | MIPS_HFLAG_FPU | MIPS_HFLAG_KSU | + MIPS_HFLAG_AWRAP | MIPS_HFLAG_DSP | MIPS_HFLAG_DSPR2 | + MIPS_HFLAG_SBRI | MIPS_HFLAG_MSA | MIPS_HFLAG_FRE | + MIPS_HFLAG_ELPA); + if (!(env->CP0_Status & (1 << CP0St_EXL)) && + !(env->CP0_Status & (1 << CP0St_ERL)) && + !(env->hflags & MIPS_HFLAG_DM)) { + env->hflags |= (env->CP0_Status >> CP0St_KSU) & MIPS_HFLAG_KSU; + } +#if defined(TARGET_MIPS64) + if ((env->insn_flags & ISA_MIPS3) && + (((env->hflags & MIPS_HFLAG_KSU) != MIPS_HFLAG_UM) || + (env->CP0_Status & (1 << CP0St_PX)) || + (env->CP0_Status & (1 << CP0St_UX)))) { + env->hflags |= MIPS_HFLAG_64; + } + + if (!(env->insn_flags & ISA_MIPS3)) { + env->hflags |= MIPS_HFLAG_AWRAP; + } else if (((env->hflags & MIPS_HFLAG_KSU) == MIPS_HFLAG_UM) && + !(env->CP0_Status & (1 << CP0St_UX))) { + env->hflags |= MIPS_HFLAG_AWRAP; + } else if (env->insn_flags & ISA_MIPS64R6) { + /* Address wrapping for Supervisor and Kernel is specified in R6 */ + if ((((env->hflags & MIPS_HFLAG_KSU) == MIPS_HFLAG_SM) && + !(env->CP0_Status & (1 << CP0St_SX))) || + (((env->hflags & MIPS_HFLAG_KSU) == MIPS_HFLAG_KM) && + !(env->CP0_Status & (1 << CP0St_KX)))) { + env->hflags |= MIPS_HFLAG_AWRAP; + } + } +#endif + if (((env->CP0_Status & (1 << CP0St_CU0)) && + !(env->insn_flags & ISA_MIPS32R6)) || + !(env->hflags & MIPS_HFLAG_KSU)) { + env->hflags |= MIPS_HFLAG_CP0; + } + if (env->CP0_Status & (1 << CP0St_CU1)) { + env->hflags |= MIPS_HFLAG_FPU; + } + if (env->CP0_Status & (1 << CP0St_FR)) { + env->hflags |= MIPS_HFLAG_F64; + } + if (((env->hflags & MIPS_HFLAG_KSU) != MIPS_HFLAG_KM) && + (env->CP0_Config5 & (1 << CP0C5_SBRI))) { + env->hflags |= MIPS_HFLAG_SBRI; + } + if (env->insn_flags & ASE_DSPR2) { + /* Enables access MIPS DSP resources, now our cpu is DSP ASER2, + so enable to access DSPR2 resources. */ + if (env->CP0_Status & (1 << CP0St_MX)) { + env->hflags |= MIPS_HFLAG_DSP | MIPS_HFLAG_DSPR2; + } + + } else if (env->insn_flags & ASE_DSP) { + /* Enables access MIPS DSP resources, now our cpu is DSP ASE, + so enable to access DSP resources. */ + if (env->CP0_Status & (1 << CP0St_MX)) { + env->hflags |= MIPS_HFLAG_DSP; + } + + } + if (env->insn_flags & ISA_MIPS32R2) { + if (env->active_fpu.fcr0 & (1 << FCR0_F64)) { + env->hflags |= MIPS_HFLAG_COP1X; + } + } else if (env->insn_flags & ISA_MIPS32) { + if (env->hflags & MIPS_HFLAG_64) { + env->hflags |= MIPS_HFLAG_COP1X; + } + } else if (env->insn_flags & ISA_MIPS4) { + /* All supported MIPS IV CPUs use the XX (CU3) to enable + and disable the MIPS IV extensions to the MIPS III ISA. + Some other MIPS IV CPUs ignore the bit, so the check here + would be too restrictive for them. */ + if (env->CP0_Status & (1U << CP0St_CU3)) { + env->hflags |= MIPS_HFLAG_COP1X; + } + } + if (env->insn_flags & ASE_MSA) { + if (env->CP0_Config5 & (1 << CP0C5_MSAEn)) { + env->hflags |= MIPS_HFLAG_MSA; + } + } + if (env->active_fpu.fcr0 & (1 << FCR0_FREP)) { + if (env->CP0_Config5 & (1 << CP0C5_FRE)) { + env->hflags |= MIPS_HFLAG_FRE; + } + } + if (env->CP0_Config3 & (1 << CP0C3_LPA)) { + if (env->CP0_PageGrain & (1 << CP0PG_ELPA)) { + env->hflags |= MIPS_HFLAG_ELPA; + } + } +} + +void cpu_mips_tlb_flush(CPUMIPSState *env, int flush_global); +void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc); +void cpu_mips_store_status(CPUMIPSState *env, target_ulong val); +void cpu_mips_store_cause(CPUMIPSState *env, target_ulong val); + +void QEMU_NORETURN do_raise_exception_err(CPUMIPSState *env, uint32_t exception, + int error_code, uintptr_t pc); + +static inline void QEMU_NORETURN do_raise_exception(CPUMIPSState *env, + uint32_t exception, + uintptr_t pc) +{ + do_raise_exception_err(env, exception, 0, pc); +} + +#endif /* MIPS_CPU_H */ |