741 lines
21 KiB
C
741 lines
21 KiB
C
#if !defined (__MIPS_CPU_H__)
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#define __MIPS_CPU_H__
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//#define DEBUG_OP
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#define TARGET_HAS_ICE 1
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#define ELF_MACHINE EM_MIPS
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#define CPUState struct CPUMIPSState
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#include "config.h"
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#include "qemu-common.h"
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#include "mips-defs.h"
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#include "cpu-defs.h"
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#include "softfloat.h"
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// uint_fast8_t and uint_fast16_t not in <sys/int_types.h>
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// XXX: move that elsewhere
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#if defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10
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typedef unsigned char uint_fast8_t;
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typedef unsigned int uint_fast16_t;
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#endif
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struct CPUMIPSState;
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typedef struct r4k_tlb_t r4k_tlb_t;
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struct r4k_tlb_t {
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target_ulong VPN;
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uint32_t PageMask;
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uint_fast8_t ASID;
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uint_fast16_t G:1;
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uint_fast16_t C0:3;
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uint_fast16_t C1:3;
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uint_fast16_t V0:1;
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uint_fast16_t V1:1;
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uint_fast16_t D0:1;
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uint_fast16_t D1:1;
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target_ulong PFN[2];
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};
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#if !defined(CONFIG_USER_ONLY)
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typedef struct CPUMIPSTLBContext CPUMIPSTLBContext;
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struct CPUMIPSTLBContext {
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uint32_t nb_tlb;
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uint32_t tlb_in_use;
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int (*map_address) (struct CPUMIPSState *env, target_phys_addr_t *physical, int *prot, target_ulong address, int rw, int access_type);
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void (*helper_tlbwi) (void);
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void (*helper_tlbwr) (void);
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void (*helper_tlbp) (void);
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void (*helper_tlbr) (void);
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union {
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struct {
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r4k_tlb_t tlb[MIPS_TLB_MAX];
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} r4k;
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} mmu;
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};
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#endif
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typedef union fpr_t fpr_t;
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union fpr_t {
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float64 fd; /* ieee double precision */
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float32 fs[2];/* ieee single precision */
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uint64_t d; /* binary double fixed-point */
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uint32_t w[2]; /* binary single fixed-point */
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};
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/* define FP_ENDIAN_IDX to access the same location
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* in the fpr_t union regardless of the host endianness
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*/
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#if defined(HOST_WORDS_BIGENDIAN)
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# define FP_ENDIAN_IDX 1
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#else
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# define FP_ENDIAN_IDX 0
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#endif
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typedef struct CPUMIPSFPUContext CPUMIPSFPUContext;
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struct CPUMIPSFPUContext {
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/* Floating point registers */
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fpr_t fpr[32];
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float_status fp_status;
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/* fpu implementation/revision register (fir) */
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uint32_t fcr0;
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#define FCR0_F64 22
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#define FCR0_L 21
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#define FCR0_W 20
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#define FCR0_3D 19
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#define FCR0_PS 18
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#define FCR0_D 17
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#define FCR0_S 16
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#define FCR0_PRID 8
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#define FCR0_REV 0
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/* fcsr */
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uint32_t fcr31;
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#define SET_FP_COND(num,env) do { ((env).fcr31) |= ((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
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#define CLEAR_FP_COND(num,env) do { ((env).fcr31) &= ~((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
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#define GET_FP_COND(env) ((((env).fcr31 >> 24) & 0xfe) | (((env).fcr31 >> 23) & 0x1))
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#define GET_FP_CAUSE(reg) (((reg) >> 12) & 0x3f)
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#define GET_FP_ENABLE(reg) (((reg) >> 7) & 0x1f)
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#define GET_FP_FLAGS(reg) (((reg) >> 2) & 0x1f)
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#define SET_FP_CAUSE(reg,v) do { (reg) = ((reg) & ~(0x3f << 12)) | ((v & 0x3f) << 12); } while(0)
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#define SET_FP_ENABLE(reg,v) do { (reg) = ((reg) & ~(0x1f << 7)) | ((v & 0x1f) << 7); } while(0)
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#define SET_FP_FLAGS(reg,v) do { (reg) = ((reg) & ~(0x1f << 2)) | ((v & 0x1f) << 2); } while(0)
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#define UPDATE_FP_FLAGS(reg,v) do { (reg) |= ((v & 0x1f) << 2); } while(0)
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#define FP_INEXACT 1
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#define FP_UNDERFLOW 2
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#define FP_OVERFLOW 4
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#define FP_DIV0 8
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#define FP_INVALID 16
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#define FP_UNIMPLEMENTED 32
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};
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#define NB_MMU_MODES 3
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typedef struct CPUMIPSMVPContext CPUMIPSMVPContext;
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struct CPUMIPSMVPContext {
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int32_t CP0_MVPControl;
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#define CP0MVPCo_CPA 3
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#define CP0MVPCo_STLB 2
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#define CP0MVPCo_VPC 1
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#define CP0MVPCo_EVP 0
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int32_t CP0_MVPConf0;
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#define CP0MVPC0_M 31
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#define CP0MVPC0_TLBS 29
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#define CP0MVPC0_GS 28
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#define CP0MVPC0_PCP 27
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#define CP0MVPC0_PTLBE 16
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#define CP0MVPC0_TCA 15
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#define CP0MVPC0_PVPE 10
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#define CP0MVPC0_PTC 0
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int32_t CP0_MVPConf1;
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#define CP0MVPC1_CIM 31
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#define CP0MVPC1_CIF 30
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#define CP0MVPC1_PCX 20
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#define CP0MVPC1_PCP2 10
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#define CP0MVPC1_PCP1 0
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};
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typedef struct mips_def_t mips_def_t;
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#define MIPS_SHADOW_SET_MAX 16
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#define MIPS_TC_MAX 5
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#define MIPS_FPU_MAX 1
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#define MIPS_DSP_ACC 4
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typedef struct TCState TCState;
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struct TCState {
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target_ulong gpr[32];
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target_ulong PC;
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target_ulong HI[MIPS_DSP_ACC];
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target_ulong LO[MIPS_DSP_ACC];
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target_ulong ACX[MIPS_DSP_ACC];
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target_ulong DSPControl;
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int32_t CP0_TCStatus;
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#define CP0TCSt_TCU3 31
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#define CP0TCSt_TCU2 30
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#define CP0TCSt_TCU1 29
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#define CP0TCSt_TCU0 28
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#define CP0TCSt_TMX 27
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#define CP0TCSt_RNST 23
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#define CP0TCSt_TDS 21
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#define CP0TCSt_DT 20
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#define CP0TCSt_DA 15
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#define CP0TCSt_A 13
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#define CP0TCSt_TKSU 11
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#define CP0TCSt_IXMT 10
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#define CP0TCSt_TASID 0
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int32_t CP0_TCBind;
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#define CP0TCBd_CurTC 21
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#define CP0TCBd_TBE 17
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#define CP0TCBd_CurVPE 0
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target_ulong CP0_TCHalt;
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target_ulong CP0_TCContext;
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target_ulong CP0_TCSchedule;
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target_ulong CP0_TCScheFBack;
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int32_t CP0_Debug_tcstatus;
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};
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typedef struct CPUMIPSState CPUMIPSState;
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struct CPUMIPSState {
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TCState active_tc;
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CPUMIPSFPUContext active_fpu;
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uint32_t current_tc;
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uint32_t current_fpu;
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uint32_t SEGBITS;
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uint32_t PABITS;
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target_ulong SEGMask;
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target_ulong PAMask;
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int32_t CP0_Index;
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/* CP0_MVP* are per MVP registers. */
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int32_t CP0_Random;
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int32_t CP0_VPEControl;
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#define CP0VPECo_YSI 21
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#define CP0VPECo_GSI 20
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#define CP0VPECo_EXCPT 16
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#define CP0VPECo_TE 15
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#define CP0VPECo_TargTC 0
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int32_t CP0_VPEConf0;
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#define CP0VPEC0_M 31
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#define CP0VPEC0_XTC 21
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#define CP0VPEC0_TCS 19
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#define CP0VPEC0_SCS 18
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#define CP0VPEC0_DSC 17
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#define CP0VPEC0_ICS 16
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#define CP0VPEC0_MVP 1
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#define CP0VPEC0_VPA 0
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int32_t CP0_VPEConf1;
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#define CP0VPEC1_NCX 20
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#define CP0VPEC1_NCP2 10
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#define CP0VPEC1_NCP1 0
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target_ulong CP0_YQMask;
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target_ulong CP0_VPESchedule;
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target_ulong CP0_VPEScheFBack;
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int32_t CP0_VPEOpt;
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#define CP0VPEOpt_IWX7 15
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#define CP0VPEOpt_IWX6 14
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#define CP0VPEOpt_IWX5 13
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#define CP0VPEOpt_IWX4 12
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#define CP0VPEOpt_IWX3 11
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#define CP0VPEOpt_IWX2 10
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#define CP0VPEOpt_IWX1 9
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#define CP0VPEOpt_IWX0 8
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#define CP0VPEOpt_DWX7 7
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#define CP0VPEOpt_DWX6 6
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#define CP0VPEOpt_DWX5 5
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#define CP0VPEOpt_DWX4 4
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#define CP0VPEOpt_DWX3 3
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#define CP0VPEOpt_DWX2 2
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#define CP0VPEOpt_DWX1 1
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#define CP0VPEOpt_DWX0 0
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target_ulong CP0_EntryLo0;
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target_ulong CP0_EntryLo1;
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target_ulong CP0_Context;
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int32_t CP0_PageMask;
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int32_t CP0_PageGrain;
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int32_t CP0_Wired;
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int32_t CP0_SRSConf0_rw_bitmask;
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int32_t CP0_SRSConf0;
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#define CP0SRSC0_M 31
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#define CP0SRSC0_SRS3 20
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#define CP0SRSC0_SRS2 10
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#define CP0SRSC0_SRS1 0
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int32_t CP0_SRSConf1_rw_bitmask;
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int32_t CP0_SRSConf1;
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#define CP0SRSC1_M 31
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#define CP0SRSC1_SRS6 20
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#define CP0SRSC1_SRS5 10
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#define CP0SRSC1_SRS4 0
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int32_t CP0_SRSConf2_rw_bitmask;
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int32_t CP0_SRSConf2;
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#define CP0SRSC2_M 31
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#define CP0SRSC2_SRS9 20
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#define CP0SRSC2_SRS8 10
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#define CP0SRSC2_SRS7 0
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int32_t CP0_SRSConf3_rw_bitmask;
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int32_t CP0_SRSConf3;
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#define CP0SRSC3_M 31
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#define CP0SRSC3_SRS12 20
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#define CP0SRSC3_SRS11 10
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#define CP0SRSC3_SRS10 0
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int32_t CP0_SRSConf4_rw_bitmask;
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int32_t CP0_SRSConf4;
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#define CP0SRSC4_SRS15 20
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#define CP0SRSC4_SRS14 10
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#define CP0SRSC4_SRS13 0
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int32_t CP0_HWREna;
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target_ulong CP0_BadVAddr;
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int32_t CP0_Count;
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target_ulong CP0_EntryHi;
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int32_t CP0_Compare;
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int32_t CP0_Status;
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#define CP0St_CU3 31
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#define CP0St_CU2 30
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#define CP0St_CU1 29
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#define CP0St_CU0 28
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#define CP0St_RP 27
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#define CP0St_FR 26
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#define CP0St_RE 25
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#define CP0St_MX 24
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#define CP0St_PX 23
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#define CP0St_BEV 22
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#define CP0St_TS 21
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#define CP0St_SR 20
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#define CP0St_NMI 19
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#define CP0St_IM 8
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#define CP0St_KX 7
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#define CP0St_SX 6
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#define CP0St_UX 5
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#define CP0St_KSU 3
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#define CP0St_ERL 2
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#define CP0St_EXL 1
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#define CP0St_IE 0
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int32_t CP0_IntCtl;
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#define CP0IntCtl_IPTI 29
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#define CP0IntCtl_IPPC1 26
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#define CP0IntCtl_VS 5
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int32_t CP0_SRSCtl;
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#define CP0SRSCtl_HSS 26
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#define CP0SRSCtl_EICSS 18
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#define CP0SRSCtl_ESS 12
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#define CP0SRSCtl_PSS 6
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#define CP0SRSCtl_CSS 0
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int32_t CP0_SRSMap;
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#define CP0SRSMap_SSV7 28
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#define CP0SRSMap_SSV6 24
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#define CP0SRSMap_SSV5 20
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#define CP0SRSMap_SSV4 16
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#define CP0SRSMap_SSV3 12
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#define CP0SRSMap_SSV2 8
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#define CP0SRSMap_SSV1 4
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#define CP0SRSMap_SSV0 0
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int32_t CP0_Cause;
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#define CP0Ca_BD 31
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#define CP0Ca_TI 30
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#define CP0Ca_CE 28
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#define CP0Ca_DC 27
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#define CP0Ca_PCI 26
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#define CP0Ca_IV 23
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#define CP0Ca_WP 22
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#define CP0Ca_IP 8
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#define CP0Ca_IP_mask 0x0000FF00
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#define CP0Ca_EC 2
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target_ulong CP0_EPC;
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int32_t CP0_PRid;
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int32_t CP0_EBase;
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int32_t CP0_Config0;
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#define CP0C0_M 31
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#define CP0C0_K23 28
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#define CP0C0_KU 25
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#define CP0C0_MDU 20
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#define CP0C0_MM 17
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#define CP0C0_BM 16
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#define CP0C0_BE 15
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#define CP0C0_AT 13
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#define CP0C0_AR 10
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#define CP0C0_MT 7
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#define CP0C0_VI 3
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#define CP0C0_K0 0
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int32_t CP0_Config1;
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#define CP0C1_M 31
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#define CP0C1_MMU 25
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#define CP0C1_IS 22
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#define CP0C1_IL 19
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#define CP0C1_IA 16
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#define CP0C1_DS 13
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#define CP0C1_DL 10
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#define CP0C1_DA 7
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#define CP0C1_C2 6
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#define CP0C1_MD 5
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#define CP0C1_PC 4
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#define CP0C1_WR 3
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#define CP0C1_CA 2
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#define CP0C1_EP 1
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#define CP0C1_FP 0
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int32_t CP0_Config2;
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#define CP0C2_M 31
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#define CP0C2_TU 28
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#define CP0C2_TS 24
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#define CP0C2_TL 20
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#define CP0C2_TA 16
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#define CP0C2_SU 12
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#define CP0C2_SS 8
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#define CP0C2_SL 4
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#define CP0C2_SA 0
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int32_t CP0_Config3;
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#define CP0C3_M 31
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#define CP0C3_ISA_ON_EXC 16
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#define CP0C3_DSPP 10
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#define CP0C3_LPA 7
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#define CP0C3_VEIC 6
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#define CP0C3_VInt 5
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#define CP0C3_SP 4
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#define CP0C3_MT 2
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#define CP0C3_SM 1
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#define CP0C3_TL 0
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int32_t CP0_Config6;
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int32_t CP0_Config7;
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/* XXX: Maybe make LLAddr per-TC? */
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target_ulong lladdr;
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target_ulong llval;
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target_ulong llnewval;
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target_ulong llreg;
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target_ulong CP0_LLAddr_rw_bitmask;
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int CP0_LLAddr_shift;
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target_ulong CP0_WatchLo[8];
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int32_t CP0_WatchHi[8];
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target_ulong CP0_XContext;
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int32_t CP0_Framemask;
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int32_t CP0_Debug;
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#define CP0DB_DBD 31
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#define CP0DB_DM 30
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#define CP0DB_LSNM 28
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#define CP0DB_Doze 27
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#define CP0DB_Halt 26
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#define CP0DB_CNT 25
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#define CP0DB_IBEP 24
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#define CP0DB_DBEP 21
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#define CP0DB_IEXI 20
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#define CP0DB_VER 15
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#define CP0DB_DEC 10
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#define CP0DB_SSt 8
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#define CP0DB_DINT 5
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#define CP0DB_DIB 4
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#define CP0DB_DDBS 3
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#define CP0DB_DDBL 2
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#define CP0DB_DBp 1
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#define CP0DB_DSS 0
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target_ulong CP0_DEPC;
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int32_t CP0_Performance0;
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int32_t CP0_TagLo;
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int32_t CP0_DataLo;
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int32_t CP0_TagHi;
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int32_t CP0_DataHi;
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target_ulong CP0_ErrorEPC;
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int32_t CP0_DESAVE;
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/* We waste some space so we can handle shadow registers like TCs. */
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TCState tcs[MIPS_SHADOW_SET_MAX];
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CPUMIPSFPUContext fpus[MIPS_FPU_MAX];
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/* Qemu */
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int error_code;
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uint32_t hflags; /* CPU State */
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/* TMASK defines different execution modes */
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#define MIPS_HFLAG_TMASK 0x007FF
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#define MIPS_HFLAG_MODE 0x00007 /* execution modes */
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/* The KSU flags must be the lowest bits in hflags. The flag order
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must be the same as defined for CP0 Status. This allows to use
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the bits as the value of mmu_idx. */
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#define MIPS_HFLAG_KSU 0x00003 /* kernel/supervisor/user mode mask */
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#define MIPS_HFLAG_UM 0x00002 /* user mode flag */
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#define MIPS_HFLAG_SM 0x00001 /* supervisor mode flag */
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#define MIPS_HFLAG_KM 0x00000 /* kernel mode flag */
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#define MIPS_HFLAG_DM 0x00004 /* Debug mode */
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#define MIPS_HFLAG_64 0x00008 /* 64-bit instructions enabled */
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#define MIPS_HFLAG_CP0 0x00010 /* CP0 enabled */
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#define MIPS_HFLAG_FPU 0x00020 /* FPU enabled */
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#define MIPS_HFLAG_F64 0x00040 /* 64-bit FPU enabled */
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/* True if the MIPS IV COP1X instructions can be used. This also
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controls the non-COP1X instructions RECIP.S, RECIP.D, RSQRT.S
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and RSQRT.D. */
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#define MIPS_HFLAG_COP1X 0x00080 /* COP1X instructions enabled */
|
|
#define MIPS_HFLAG_RE 0x00100 /* Reversed endianness */
|
|
#define MIPS_HFLAG_UX 0x00200 /* 64-bit user mode */
|
|
#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 0x03800
|
|
#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 0x3C000
|
|
#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_BX 0x20000 /* branch exchanges execution mode */
|
|
#define MIPS_HFLAG_BMASK (MIPS_HFLAG_BMASK_BASE | MIPS_HFLAG_BMASK_EXT)
|
|
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
|
|
|
|
CPUMIPSMVPContext *mvp;
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
CPUMIPSTLBContext *tlb;
|
|
#endif
|
|
|
|
const mips_def_t *cpu_model;
|
|
void *irq[8];
|
|
struct QEMUTimer *timer; /* Internal timer */
|
|
};
|
|
|
|
#if !defined(CONFIG_USER_ONLY)
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|
int no_mmu_map_address (CPUMIPSState *env, target_phys_addr_t *physical, int *prot,
|
|
target_ulong address, int rw, int access_type);
|
|
int fixed_mmu_map_address (CPUMIPSState *env, target_phys_addr_t *physical, int *prot,
|
|
target_ulong address, int rw, int access_type);
|
|
int r4k_map_address (CPUMIPSState *env, target_phys_addr_t *physical, int *prot,
|
|
target_ulong address, int rw, int access_type);
|
|
void r4k_helper_tlbwi (void);
|
|
void r4k_helper_tlbwr (void);
|
|
void r4k_helper_tlbp (void);
|
|
void r4k_helper_tlbr (void);
|
|
|
|
void cpu_unassigned_access(CPUState *env, target_phys_addr_t addr,
|
|
int is_write, int is_exec, int unused, int size);
|
|
#endif
|
|
|
|
void mips_cpu_list (FILE *f, fprintf_function cpu_fprintf);
|
|
|
|
#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
|
|
|
|
/* 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 (CPUState *env)
|
|
{
|
|
return env->hflags & MIPS_HFLAG_KSU;
|
|
}
|
|
|
|
static inline void cpu_clone_regs(CPUState *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(CPUState *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)) ||
|
|
/* 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)) ||
|
|
(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 "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_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 (CPUState *env);
|
|
uint32_t cpu_mips_get_count (CPUState *env);
|
|
void cpu_mips_store_count (CPUState *env, uint32_t value);
|
|
void cpu_mips_store_compare (CPUState *env, uint32_t value);
|
|
void cpu_mips_start_count(CPUState *env);
|
|
void cpu_mips_stop_count(CPUState *env);
|
|
|
|
/* mips_int.c */
|
|
void cpu_mips_soft_irq(CPUState *env, int irq, int level);
|
|
|
|
/* helper.c */
|
|
int cpu_mips_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
|
|
int mmu_idx);
|
|
#define cpu_handle_mmu_fault cpu_mips_handle_mmu_fault
|
|
void do_interrupt (CPUState *env);
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
void r4k_invalidate_tlb (CPUState *env, int idx, int use_extra);
|
|
target_phys_addr_t cpu_mips_translate_address (CPUState *env, target_ulong address,
|
|
int rw);
|
|
#endif
|
|
|
|
static inline void cpu_get_tb_cpu_state(CPUState *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(CPUState *env, target_ulong newtls)
|
|
{
|
|
env->tls_value = newtls;
|
|
}
|
|
|
|
static inline int mips_vpe_active(CPUState *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 actived. */
|
|
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 cpu_has_work(CPUState *env)
|
|
{
|
|
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 ((env->interrupt_request & CPU_INTERRUPT_HARD) &&
|
|
cpu_mips_hw_interrupts_pending(env)) {
|
|
has_work = 1;
|
|
}
|
|
|
|
/* MIPS-MT has the ability to halt the CPU. */
|
|
if (env->CP0_Config3 & (1 << CP0C3_MT)) {
|
|
/* The QEMU model will issue an _WAKE request whenever the CPUs
|
|
should be woken up. */
|
|
if (env->interrupt_request & CPU_INTERRUPT_WAKE) {
|
|
has_work = 1;
|
|
}
|
|
|
|
if (!mips_vpe_active(env)) {
|
|
has_work = 0;
|
|
}
|
|
}
|
|
return has_work;
|
|
}
|
|
|
|
#include "exec-all.h"
|
|
|
|
static inline void cpu_pc_from_tb(CPUState *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__) */
|