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xemu/target-mips/cpu.h
ths 9c2149c8e0 Implementing dmfc/dmtc. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2348 c046a42c-6fe2-441c-8c8c-71466251a162
2007-01-23 22:45:22 +00:00

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9.5 KiB
C
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#if !defined (__MIPS_CPU_H__)
#define __MIPS_CPU_H__
#define TARGET_HAS_ICE 1
#define ELF_MACHINE EM_MIPS
#include "config.h"
#include "mips-defs.h"
#include "cpu-defs.h"
#include "softfloat.h"
// uint_fast8_t and uint_fast16_t not in <sys/int_types.h>
// XXX: move that elsewhere
#if defined(HOST_SOLARIS) && SOLARISREV < 10
typedef unsigned char uint_fast8_t;
typedef unsigned int uint_fast16_t;
#endif
/* target_ulong size spec */
#ifdef MIPS_HAS_MIPS64
#define TLSZ "%016llx"
#else
#define TLSZ "%08x"
#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 single 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 endianess
*/
#if defined(WORDS_BIGENDIAN)
# define FP_ENDIAN_IDX 1
#else
# define FP_ENDIAN_IDX 0
#endif
#if defined(MIPS_USES_R4K_TLB)
typedef struct tlb_t tlb_t;
struct 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];
};
#endif
typedef struct CPUMIPSState CPUMIPSState;
struct CPUMIPSState {
/* General integer registers */
target_ulong gpr[32];
/* Special registers */
target_ulong PC;
#if TARGET_LONG_BITS > HOST_LONG_BITS
target_ulong t0;
target_ulong t1;
target_ulong t2;
#endif
target_ulong HI, LO;
uint32_t DCR; /* ? */
#if defined(MIPS_USES_FPU)
/* Floating point registers */
fpr_t fpr[16];
#define FPR(cpu, n) ((fpr_t*)&(cpu)->fpr[(n) / 2])
#define FPR_FD(cpu, n) (FPR(cpu, n)->fd)
#define FPR_FS(cpu, n) (FPR(cpu, n)->fs[((n) & 1) ^ FP_ENDIAN_IDX])
#define FPR_D(cpu, n) (FPR(cpu, n)->d)
#define FPR_W(cpu, n) (FPR(cpu, n)->w[((n) & 1) ^ FP_ENDIAN_IDX])
#ifndef USE_HOST_FLOAT_REGS
fpr_t ft0;
fpr_t ft1;
fpr_t ft2;
#endif
float_status fp_status;
/* fpu implementation/revision register */
uint32_t fcr0;
/* fcsr */
uint32_t fcr31;
#define SET_FP_COND(reg) do { (reg) |= (1<<23); } while(0)
#define CLEAR_FP_COND(reg) do { (reg) &= ~(1<<23); } while(0)
#define IS_FP_COND_SET(reg) (((reg) & (1<<23)) != 0)
#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) << 12); } while(0)
#define SET_FP_ENABLE(reg,v) do { (reg) = ((reg) & ~(0x1f << 7)) | ((v) << 7); } while(0)
#define SET_FP_FLAGS(reg,v) do { (reg) = ((reg) & ~(0x1f << 2)) | ((v) << 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
#endif
#if defined(MIPS_USES_R4K_TLB)
tlb_t tlb[MIPS_TLB_MAX];
uint32_t tlb_in_use;
#endif
int32_t CP0_Index;
int32_t CP0_Random;
target_ulong CP0_EntryLo0;
target_ulong CP0_EntryLo1;
target_ulong CP0_Context;
int32_t CP0_PageMask;
int32_t CP0_PageGrain;
int32_t CP0_Wired;
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_UM 4
#define CP0St_R0 3
#define CP0St_ERL 2
#define CP0St_EXL 1
#define CP0St_IE 0
int32_t CP0_IntCtl;
int32_t CP0_SRSCtl;
int32_t CP0_SRSMap;
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_EC 2
target_ulong CP0_EPC;
int32_t CP0_PRid;
target_ulong 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_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
target_ulong CP0_LLAddr;
target_ulong CP0_WatchLo;
int32_t CP0_WatchHi;
target_ulong CP0_XContext;
int32_t CP0_Framemask;
int32_t CP0_Debug;
#define CPDB_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;
/* Qemu */
int interrupt_request;
jmp_buf jmp_env;
int exception_index;
int error_code;
int user_mode_only; /* user mode only simulation */
uint32_t hflags; /* CPU State */
/* TMASK defines different execution modes */
#define MIPS_HFLAG_TMASK 0x007F
#define MIPS_HFLAG_MODE 0x001F /* execution modes */
#define MIPS_HFLAG_UM 0x0001 /* user mode */
#define MIPS_HFLAG_ERL 0x0002 /* Error mode */
#define MIPS_HFLAG_EXL 0x0004 /* Exception mode */
#define MIPS_HFLAG_DM 0x0008 /* Debug mode */
#define MIPS_HFLAG_SM 0x0010 /* Supervisor mode */
#define MIPS_HFLAG_RE 0x0040 /* Reversed endianness */
/* 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 0x0380
#define MIPS_HFLAG_B 0x0080 /* Unconditional branch */
#define MIPS_HFLAG_BC 0x0100 /* Conditional branch */
#define MIPS_HFLAG_BL 0x0180 /* Likely branch */
#define MIPS_HFLAG_BR 0x0200 /* branch to register (can't link TB) */
target_ulong btarget; /* Jump / branch target */
int bcond; /* Branch condition (if needed) */
int halted; /* TRUE if the CPU is in suspend state */
int SYNCI_Step; /* Address step size for SYNCI */
int CCRes; /* Cycle count resolution/divisor */
CPU_COMMON
int ram_size;
const char *kernel_filename;
const char *kernel_cmdline;
const char *initrd_filename;
struct QEMUTimer *timer; /* Internal timer */
};
#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_NMI,
EXCP_MCHECK,
EXCP_EXT_INTERRUPT,
EXCP_DFWATCH,
EXCP_DIB, /* 8 */
EXCP_IWATCH,
EXCP_AdEL,
EXCP_AdES,
EXCP_TLBF,
EXCP_IBE,
EXCP_DBp,
EXCP_SYSCALL,
EXCP_BREAK, /* 16 */
EXCP_CpU,
EXCP_RI,
EXCP_OVERFLOW,
EXCP_TRAP,
EXCP_DDBS,
EXCP_DWATCH,
EXCP_LAE,
EXCP_SAE, /* 24 */
EXCP_LTLBL,
EXCP_TLBL,
EXCP_TLBS,
EXCP_DBE,
EXCP_DDBL,
EXCP_MTCP0 = 0x104, /* mtmsr instruction: */
/* may change privilege level */
EXCP_BRANCH = 0x108, /* branch instruction */
EXCP_ERET = 0x10C, /* return from interrupt */
EXCP_SYSCALL_USER = 0x110, /* System call in user mode only */
EXCP_FLUSH = 0x109,
};
int cpu_mips_exec(CPUMIPSState *s);
CPUMIPSState *cpu_mips_init(void);
uint32_t cpu_mips_get_clock (void);
#endif /* !defined (__MIPS_CPU_H__) */
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