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

 #if !defined (__MIPS_CPU_H__)
 #define __MIPS_CPU_H__

 #define TARGET_HAS_ICE 1

 #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

 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;
     target_ulong end;
     target_ulong end2;
     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;
     uint32_t 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_NB];
 #endif
     uint32_t CP0_index;
     uint32_t CP0_random;
     uint32_t CP0_EntryLo0;
     uint32_t CP0_EntryLo1;
     uint32_t CP0_Context;
     uint32_t CP0_PageMask;
     uint32_t CP0_Wired;
     uint32_t CP0_BadVAddr;
     uint32_t CP0_Count;
     uint32_t CP0_EntryHi;
     uint32_t CP0_Compare;
     uint32_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_BEV   22
 #define CP0St_TS    21
 #define CP0St_SR    20
 #define CP0St_NMI   19
 #define CP0St_IM    8
 #define CP0St_UM    4
 #define CP0St_ERL   2
 #define CP0St_EXL   1
 #define CP0St_IE    0
     uint32_t CP0_Cause;
 #define CP0Ca_IV   23
     uint32_t CP0_EPC;
     uint32_t CP0_PRid;
     uint32_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_K0   0
     uint32_t CP0_Config1;
 #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_PC   4
 #define CP0C1_WR   3
 #define CP0C1_CA   2
 #define CP0C1_EP   1
 #define CP0C1_FP   0
     uint32_t CP0_LLAddr;
     uint32_t CP0_WatchLo;
     uint32_t CP0_WatchHi;
     uint32_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
     uint32_t CP0_DEPC;
     uint32_t CP0_TagLo;
     uint32_t CP0_DataLo;
     uint32_t CP0_ErrorEPC;
     uint32_t CP0_DESAVE;
     /* Qemu */
     struct QEMUTimer *timer; /* Internal timer */
     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 */

     CPU_COMMON
 };

 #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__) */
	#if !defined (__MIPS_CPU_H__)
	#define __MIPS_CPU_H__

	#define TARGET_HAS_ICE 1

	#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

	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;
	target_ulong end;
	target_ulong end2;
	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;
	uint32_t 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_NB];
	#endif
	uint32_t CP0_index;
	uint32_t CP0_random;
	uint32_t CP0_EntryLo0;
	uint32_t CP0_EntryLo1;
	uint32_t CP0_Context;
	uint32_t CP0_PageMask;
	uint32_t CP0_Wired;
	uint32_t CP0_BadVAddr;
	uint32_t CP0_Count;
	uint32_t CP0_EntryHi;
	uint32_t CP0_Compare;
	uint32_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_BEV 22
	#define CP0St_TS 21
	#define CP0St_SR 20
	#define CP0St_NMI 19
	#define CP0St_IM 8
	#define CP0St_UM 4
	#define CP0St_ERL 2
	#define CP0St_EXL 1
	#define CP0St_IE 0
	uint32_t CP0_Cause;
	#define CP0Ca_IV 23
	uint32_t CP0_EPC;
	uint32_t CP0_PRid;
	uint32_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_K0 0
	uint32_t CP0_Config1;
	#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_PC 4
	#define CP0C1_WR 3
	#define CP0C1_CA 2
	#define CP0C1_EP 1
	#define CP0C1_FP 0
	uint32_t CP0_LLAddr;
	uint32_t CP0_WatchLo;
	uint32_t CP0_WatchHi;
	uint32_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
	uint32_t CP0_DEPC;
	uint32_t CP0_TagLo;
	uint32_t CP0_DataLo;
	uint32_t CP0_ErrorEPC;
	uint32_t CP0_DESAVE;
	/* Qemu */
	struct QEMUTimer timer; / Internal timer */
	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 */

	CPU_COMMON
	};

	#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__) */