Archipelago » qemu

/*

 *  MIPS32 emulation for qemu: main translation routines.

 * 

 *  Copyright (c) 2004-2005 Jocelyn Mayer

 *  Copyright (c) 2006 Marius Groeger (FPU operations)

 *  Copyright (c) 2006 Thiemo Seufer (MIPS32R2 support)

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

#include <stdarg.h>

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <inttypes.h>

#include "cpu.h"

#include "exec-all.h"

#include "disas.h"

//#define MIPS_DEBUG_DISAS

//#define MIPS_DEBUG_SIGN_EXTENSIONS

//#define MIPS_SINGLE_STEP

#ifdef USE_DIRECT_JUMP

#define TBPARAM(x)

#else

#define TBPARAM(x) (long)(x)

#endif

enum {

#define DEF(s, n, copy_size) INDEX_op_ ## s,

#include "opc.h"

#undef DEF

    NB_OPS,

};

static uint16_t *gen_opc_ptr;

static uint32_t *gen_opparam_ptr;

#include "gen-op.h"

/* MIPS major opcodes */

#define MASK_OP_MAJOR(op)  (op & (0x3F << 26))

enum {

    /* indirect opcode tables */

    OPC_SPECIAL  = (0x00 << 26),

    OPC_REGIMM   = (0x01 << 26),

    OPC_CP0      = (0x10 << 26),

    OPC_CP1      = (0x11 << 26),

    OPC_CP2      = (0x12 << 26),

    OPC_CP3      = (0x13 << 26),

    OPC_SPECIAL2 = (0x1C << 26),

    OPC_SPECIAL3 = (0x1F << 26),

    /* arithmetic with immediate */

    OPC_ADDI     = (0x08 << 26),

    OPC_ADDIU    = (0x09 << 26),

    OPC_SLTI     = (0x0A << 26),

    OPC_SLTIU    = (0x0B << 26),

    OPC_ANDI     = (0x0C << 26),

    OPC_ORI      = (0x0D << 26),

    OPC_XORI     = (0x0E << 26),

    OPC_LUI      = (0x0F << 26),

    OPC_DADDI    = (0x18 << 26),

    OPC_DADDIU   = (0x19 << 26),

    /* Jump and branches */

    OPC_J        = (0x02 << 26),

    OPC_JAL      = (0x03 << 26),

    OPC_BEQ      = (0x04 << 26),  /* Unconditional if rs = rt = 0 (B) */

    OPC_BEQL     = (0x14 << 26),

    OPC_BNE      = (0x05 << 26),

    OPC_BNEL     = (0x15 << 26),

    OPC_BLEZ     = (0x06 << 26),

    OPC_BLEZL    = (0x16 << 26),

    OPC_BGTZ     = (0x07 << 26),

    OPC_BGTZL    = (0x17 << 26),

    OPC_JALX     = (0x1D << 26),  /* MIPS 16 only */

    /* Load and stores */

    OPC_LDL      = (0x1A << 26),

    OPC_LDR      = (0x1B << 26),

    OPC_LB       = (0x20 << 26),

    OPC_LH       = (0x21 << 26),

    OPC_LWL      = (0x22 << 26),

    OPC_LW       = (0x23 << 26),

    OPC_LBU      = (0x24 << 26),

    OPC_LHU      = (0x25 << 26),

    OPC_LWR      = (0x26 << 26),

    OPC_LWU      = (0x27 << 26),

    OPC_SB       = (0x28 << 26),

    OPC_SH       = (0x29 << 26),

    OPC_SWL      = (0x2A << 26),

    OPC_SW       = (0x2B << 26),

    OPC_SDL      = (0x2C << 26),

    OPC_SDR      = (0x2D << 26),

    OPC_SWR      = (0x2E << 26),

    OPC_LL       = (0x30 << 26),

    OPC_LLD      = (0x34 << 26),

    OPC_LD       = (0x37 << 26),

    OPC_SC       = (0x38 << 26),

    OPC_SCD      = (0x3C << 26),

    OPC_SD       = (0x3F << 26),

    /* Floating point load/store */

    OPC_LWC1     = (0x31 << 26),

    OPC_LWC2     = (0x32 << 26),

    OPC_LDC1     = (0x35 << 26),

    OPC_LDC2     = (0x36 << 26),

    OPC_SWC1     = (0x39 << 26),

    OPC_SWC2     = (0x3A << 26),

    OPC_SDC1     = (0x3D << 26),

    OPC_SDC2     = (0x3E << 26),

    /* MDMX ASE specific */

    OPC_MDMX     = (0x1E << 26),

    /* Cache and prefetch */

    OPC_CACHE    = (0x2F << 26),

    OPC_PREF     = (0x33 << 26),

    /* Reserved major opcode */

    OPC_MAJOR3B_RESERVED = (0x3B << 26),

};

/* MIPS special opcodes */

#define MASK_SPECIAL(op)   MASK_OP_MAJOR(op) | (op & 0x3F)

enum {

    /* Shifts */

    OPC_SLL      = 0x00 | OPC_SPECIAL,

    /* NOP is SLL r0, r0, 0   */

    /* SSNOP is SLL r0, r0, 1 */

    /* EHB is SLL r0, r0, 3 */

    OPC_SRL      = 0x02 | OPC_SPECIAL, /* also ROTR */

    OPC_SRA      = 0x03 | OPC_SPECIAL,

    OPC_SLLV     = 0x04 | OPC_SPECIAL,

    OPC_SRLV     = 0x06 | OPC_SPECIAL,

    OPC_SRAV     = 0x07 | OPC_SPECIAL,

    OPC_DSLLV    = 0x14 | OPC_SPECIAL,

    OPC_DSRLV    = 0x16 | OPC_SPECIAL, /* also DROTRV */

    OPC_DSRAV    = 0x17 | OPC_SPECIAL,

    OPC_DSLL     = 0x38 | OPC_SPECIAL,

    OPC_DSRL     = 0x3A | OPC_SPECIAL, /* also DROTR */

    OPC_DSRA     = 0x3B | OPC_SPECIAL,

    OPC_DSLL32   = 0x3C | OPC_SPECIAL,

    OPC_DSRL32   = 0x3E | OPC_SPECIAL, /* also DROTR32 */

    OPC_DSRA32   = 0x3F | OPC_SPECIAL,

    /* Multiplication / division */

    OPC_MULT     = 0x18 | OPC_SPECIAL,

    OPC_MULTU    = 0x19 | OPC_SPECIAL,

    OPC_DIV      = 0x1A | OPC_SPECIAL,

    OPC_DIVU     = 0x1B | OPC_SPECIAL,

    OPC_DMULT    = 0x1C | OPC_SPECIAL,

    OPC_DMULTU   = 0x1D | OPC_SPECIAL,

    OPC_DDIV     = 0x1E | OPC_SPECIAL,

    OPC_DDIVU    = 0x1F | OPC_SPECIAL,

    /* 2 registers arithmetic / logic */

    OPC_ADD      = 0x20 | OPC_SPECIAL,

    OPC_ADDU     = 0x21 | OPC_SPECIAL,

    OPC_SUB      = 0x22 | OPC_SPECIAL,

    OPC_SUBU     = 0x23 | OPC_SPECIAL,

    OPC_AND      = 0x24 | OPC_SPECIAL,

    OPC_OR       = 0x25 | OPC_SPECIAL,

    OPC_XOR      = 0x26 | OPC_SPECIAL,

    OPC_NOR      = 0x27 | OPC_SPECIAL,

    OPC_SLT      = 0x2A | OPC_SPECIAL,

    OPC_SLTU     = 0x2B | OPC_SPECIAL,

    OPC_DADD     = 0x2C | OPC_SPECIAL,

    OPC_DADDU    = 0x2D | OPC_SPECIAL,

    OPC_DSUB     = 0x2E | OPC_SPECIAL,

    OPC_DSUBU    = 0x2F | OPC_SPECIAL,

    /* Jumps */

    OPC_JR       = 0x08 | OPC_SPECIAL, /* Also JR.HB */

    OPC_JALR     = 0x09 | OPC_SPECIAL, /* Also JALR.HB */

    /* Traps */

    OPC_TGE      = 0x30 | OPC_SPECIAL,

    OPC_TGEU     = 0x31 | OPC_SPECIAL,

    OPC_TLT      = 0x32 | OPC_SPECIAL,

    OPC_TLTU     = 0x33 | OPC_SPECIAL,

    OPC_TEQ      = 0x34 | OPC_SPECIAL,

    OPC_TNE      = 0x36 | OPC_SPECIAL,

    /* HI / LO registers load & stores */

    OPC_MFHI     = 0x10 | OPC_SPECIAL,

    OPC_MTHI     = 0x11 | OPC_SPECIAL,

    OPC_MFLO     = 0x12 | OPC_SPECIAL,

    OPC_MTLO     = 0x13 | OPC_SPECIAL,

    /* Conditional moves */

    OPC_MOVZ     = 0x0A | OPC_SPECIAL,

    OPC_MOVN     = 0x0B | OPC_SPECIAL,

    OPC_MOVCI    = 0x01 | OPC_SPECIAL,

    /* Special */

    OPC_PMON     = 0x05 | OPC_SPECIAL, /* inofficial */

    OPC_SYSCALL  = 0x0C | OPC_SPECIAL,

    OPC_BREAK    = 0x0D | OPC_SPECIAL,

    OPC_SPIM     = 0x0E | OPC_SPECIAL, /* inofficial */

    OPC_SYNC     = 0x0F | OPC_SPECIAL,

    OPC_SPECIAL15_RESERVED = 0x15 | OPC_SPECIAL,

    OPC_SPECIAL28_RESERVED = 0x28 | OPC_SPECIAL,

    OPC_SPECIAL29_RESERVED = 0x29 | OPC_SPECIAL,

    OPC_SPECIAL35_RESERVED = 0x35 | OPC_SPECIAL,

    OPC_SPECIAL37_RESERVED = 0x37 | OPC_SPECIAL,

    OPC_SPECIAL39_RESERVED = 0x39 | OPC_SPECIAL,

    OPC_SPECIAL3D_RESERVED = 0x3D | OPC_SPECIAL,

};

/* REGIMM (rt field) opcodes */

#define MASK_REGIMM(op)    MASK_OP_MAJOR(op) | (op & (0x1F << 16))

enum {

    OPC_BLTZ     = (0x00 << 16) | OPC_REGIMM,

    OPC_BLTZL    = (0x02 << 16) | OPC_REGIMM,

    OPC_BGEZ     = (0x01 << 16) | OPC_REGIMM,

    OPC_BGEZL    = (0x03 << 16) | OPC_REGIMM,

    OPC_BLTZAL   = (0x10 << 16) | OPC_REGIMM,

    OPC_BLTZALL  = (0x12 << 16) | OPC_REGIMM,

    OPC_BGEZAL   = (0x11 << 16) | OPC_REGIMM,

    OPC_BGEZALL  = (0x13 << 16) | OPC_REGIMM,

    OPC_TGEI     = (0x08 << 16) | OPC_REGIMM,

    OPC_TGEIU    = (0x09 << 16) | OPC_REGIMM,

    OPC_TLTI     = (0x0A << 16) | OPC_REGIMM,

    OPC_TLTIU    = (0x0B << 16) | OPC_REGIMM,

    OPC_TEQI     = (0x0C << 16) | OPC_REGIMM,

    OPC_TNEI     = (0x0E << 16) | OPC_REGIMM,

    OPC_SYNCI    = (0x1F << 16) | OPC_REGIMM,

};

/* Special2 opcodes */

#define MASK_SPECIAL2(op)  MASK_OP_MAJOR(op) | (op & 0x3F)

enum {

    /* Multiply & xxx operations */

    OPC_MADD     = 0x00 | OPC_SPECIAL2,

    OPC_MADDU    = 0x01 | OPC_SPECIAL2,

    OPC_MUL      = 0x02 | OPC_SPECIAL2,

    OPC_MSUB     = 0x04 | OPC_SPECIAL2,

    OPC_MSUBU    = 0x05 | OPC_SPECIAL2,

    /* Misc */

    OPC_CLZ      = 0x20 | OPC_SPECIAL2,

    OPC_CLO      = 0x21 | OPC_SPECIAL2,

    OPC_DCLZ     = 0x24 | OPC_SPECIAL2,

    OPC_DCLO     = 0x25 | OPC_SPECIAL2,

    /* Special */

    OPC_SDBBP    = 0x3F | OPC_SPECIAL2,

};

/* Special3 opcodes */

#define MASK_SPECIAL3(op)  MASK_OP_MAJOR(op) | (op & 0x3F)

enum {

    OPC_EXT      = 0x00 | OPC_SPECIAL3,

    OPC_DEXTM    = 0x01 | OPC_SPECIAL3,

    OPC_DEXTU    = 0x02 | OPC_SPECIAL3,

    OPC_DEXT     = 0x03 | OPC_SPECIAL3,

    OPC_INS      = 0x04 | OPC_SPECIAL3,

    OPC_DINSM    = 0x05 | OPC_SPECIAL3,

    OPC_DINSU    = 0x06 | OPC_SPECIAL3,

    OPC_DINS     = 0x07 | OPC_SPECIAL3,

    OPC_BSHFL    = 0x20 | OPC_SPECIAL3,

    OPC_DBSHFL   = 0x24 | OPC_SPECIAL3,

    OPC_RDHWR    = 0x3B | OPC_SPECIAL3,

};

/* BSHFL opcodes */

#define MASK_BSHFL(op)     MASK_SPECIAL3(op) | (op & (0x1F << 6))

enum {

    OPC_WSBH     = (0x02 << 6) | OPC_BSHFL,

    OPC_SEB      = (0x10 << 6) | OPC_BSHFL,

    OPC_SEH      = (0x18 << 6) | OPC_BSHFL,

};

/* DBSHFL opcodes */

#define MASK_DBSHFL(op)    MASK_SPECIAL3(op) | (op & (0x1F << 6))

enum {

    OPC_DSBH     = (0x02 << 6) | OPC_DBSHFL,

    OPC_DSHD     = (0x05 << 6) | OPC_DBSHFL,

};

/* Coprocessor 0 (rs field) */

#define MASK_CP0(op)       MASK_OP_MAJOR(op) | (op & (0x1F << 21))

enum {

    OPC_MFC0     = (0x00 << 21) | OPC_CP0,

    OPC_DMFC0    = (0x01 << 21) | OPC_CP0,

    OPC_MTC0     = (0x04 << 21) | OPC_CP0,

    OPC_DMTC0    = (0x05 << 21) | OPC_CP0,

    OPC_RDPGPR   = (0x0A << 21) | OPC_CP0,

    OPC_MFMC0    = (0x0B << 21) | OPC_CP0,

    OPC_WRPGPR   = (0x0E << 21) | OPC_CP0,

    OPC_C0       = (0x10 << 21) | OPC_CP0,

    OPC_C0_FIRST = (0x10 << 21) | OPC_CP0,

    OPC_C0_LAST  = (0x1F << 21) | OPC_CP0,

};

/* MFMC0 opcodes */

#define MASK_MFMC0(op)     MASK_CP0(op) | (op & ((0x0C << 11) | (1 << 5)))

enum {

    OPC_DI       = (0 << 5) | (0x0C << 11) | OPC_MFMC0,

    OPC_EI       = (1 << 5) | (0x0C << 11) | OPC_MFMC0,

};

/* Coprocessor 0 (with rs == C0) */

#define MASK_C0(op)        MASK_CP0(op) | (op & 0x3F)

enum {

    OPC_TLBR     = 0x01 | OPC_C0,

    OPC_TLBWI    = 0x02 | OPC_C0,

    OPC_TLBWR    = 0x06 | OPC_C0,

    OPC_TLBP     = 0x08 | OPC_C0,

    OPC_RFE      = 0x10 | OPC_C0,

    OPC_ERET     = 0x18 | OPC_C0,

    OPC_DERET    = 0x1F | OPC_C0,

    OPC_WAIT     = 0x20 | OPC_C0,

};

/* Coprocessor 1 (rs field) */

#define MASK_CP1(op)       MASK_OP_MAJOR(op) | (op & (0x1F << 21))

enum {

    OPC_MFC1     = (0x00 << 21) | OPC_CP1,

    OPC_DMFC1    = (0x01 << 21) | OPC_CP1,

    OPC_CFC1     = (0x02 << 21) | OPC_CP1,

    OPC_MFHCI    = (0x03 << 21) | OPC_CP1,

    OPC_MTC1     = (0x04 << 21) | OPC_CP1,

    OPC_DMTC1    = (0x05 << 21) | OPC_CP1,

    OPC_CTC1     = (0x06 << 21) | OPC_CP1,

    OPC_MTHCI    = (0x07 << 21) | OPC_CP1,

    OPC_BC1      = (0x08 << 21) | OPC_CP1, /* bc */

    OPC_S_FMT    = (0x10 << 21) | OPC_CP1, /* 16: fmt=single fp */

    OPC_D_FMT    = (0x11 << 21) | OPC_CP1, /* 17: fmt=double fp */

    OPC_E_FMT    = (0x12 << 21) | OPC_CP1, /* 18: fmt=extended fp */

    OPC_Q_FMT    = (0x13 << 21) | OPC_CP1, /* 19: fmt=quad fp */

    OPC_W_FMT    = (0x14 << 21) | OPC_CP1, /* 20: fmt=32bit fixed */

    OPC_L_FMT    = (0x15 << 21) | OPC_CP1, /* 21: fmt=64bit fixed */

};

enum {

    OPC_BC1F     = (0x00 << 16) | OPC_BC1,

    OPC_BC1T     = (0x01 << 16) | OPC_BC1,

    OPC_BC1FL    = (0x02 << 16) | OPC_BC1,

    OPC_BC1TL    = (0x03 << 16) | OPC_BC1,

};

#define MASK_CP1_BCOND(op)      MASK_CP1(op) | (op & (0x3 << 16))

#define MASK_CP1_FUNC(op)       MASK_CP1(op) | (op & 0x3F)

#define MASK_CP2(op)       MASK_OP_MAJOR(op) | (op & (0x1F << 21))

#define MASK_CP3(op)       MASK_OP_MAJOR(op) | (op & (0x1F << 21))

const unsigned char *regnames[] =

    { "r0", "at", "v0", "v1", "a0", "a1", "a2", "a3",

      "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",

      "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",

      "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra", };

/* Warning: no function for r0 register (hard wired to zero) */

#define GEN32(func, NAME) \

static GenOpFunc *NAME ## _table [32] = {                                     \

NULL,       NAME ## 1, NAME ## 2, NAME ## 3,                                  \

NAME ## 4,  NAME ## 5, NAME ## 6, NAME ## 7,                                  \

NAME ## 8,  NAME ## 9, NAME ## 10, NAME ## 11,                                \

NAME ## 12, NAME ## 13, NAME ## 14, NAME ## 15,                               \

NAME ## 16, NAME ## 17, NAME ## 18, NAME ## 19,                               \

NAME ## 20, NAME ## 21, NAME ## 22, NAME ## 23,                               \

NAME ## 24, NAME ## 25, NAME ## 26, NAME ## 27,                               \

NAME ## 28, NAME ## 29, NAME ## 30, NAME ## 31,                               \

};                                                                            \

static inline void func(int n)                                                \

{                                                                             \

    NAME ## _table[n]();                                                      \

}

/* General purpose registers moves */

GEN32(gen_op_load_gpr_T0, gen_op_load_gpr_T0_gpr);

GEN32(gen_op_load_gpr_T1, gen_op_load_gpr_T1_gpr);

GEN32(gen_op_load_gpr_T2, gen_op_load_gpr_T2_gpr);

GEN32(gen_op_store_T0_gpr, gen_op_store_T0_gpr_gpr);

GEN32(gen_op_store_T1_gpr, gen_op_store_T1_gpr_gpr);

#ifdef MIPS_USES_FPU

static const char *fregnames[] =

    { "f0",  "f1",  "f2",  "f3",  "f4",  "f5",  "f6",  "f7",

      "f8",  "f9",  "f10", "f11", "f12", "f13", "f14", "f15",

      "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",

      "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", };

# define SFGEN32(func, NAME) \

static GenOpFunc *NAME ## _table [32] = {                                     \

NAME ## 0,  NAME ## 1,  NAME ## 2,  NAME ## 3,                                \

NAME ## 4,  NAME ## 5,  NAME ## 6,  NAME ## 7,                                \

NAME ## 8,  NAME ## 9,  NAME ## 10, NAME ## 11,                               \

NAME ## 12, NAME ## 13, NAME ## 14, NAME ## 15,                               \

NAME ## 16, NAME ## 17, NAME ## 18, NAME ## 19,                               \

NAME ## 20, NAME ## 21, NAME ## 22, NAME ## 23,                               \

NAME ## 24, NAME ## 25, NAME ## 26, NAME ## 27,                               \

NAME ## 28, NAME ## 29, NAME ## 30, NAME ## 31,                               \

};                                                                            \

static inline void func(int n)                                                \

{                                                                             \

    NAME ## _table[n]();                                                      \

}

# define DFGEN32(func, NAME) \

static GenOpFunc *NAME ## _table [32] = {                                     \

NAME ## 0,  0, NAME ## 2,  0,                                                 \

NAME ## 4,  0, NAME ## 6,  0,                                                 \

NAME ## 8,  0, NAME ## 10, 0,                                                 \

NAME ## 12, 0, NAME ## 14, 0,                                                 \

NAME ## 16, 0, NAME ## 18, 0,                                                 \

NAME ## 20, 0, NAME ## 22, 0,                                                 \

NAME ## 24, 0, NAME ## 26, 0,                                                 \

NAME ## 28, 0, NAME ## 30, 0,                                                 \

};                                                                            \

static inline void func(int n)                                                \

{                                                                             \

    NAME ## _table[n]();                                                      \

}

SFGEN32(gen_op_load_fpr_WT0,  gen_op_load_fpr_WT0_fpr);

SFGEN32(gen_op_store_fpr_WT0, gen_op_store_fpr_WT0_fpr);

SFGEN32(gen_op_load_fpr_WT1,  gen_op_load_fpr_WT1_fpr);

SFGEN32(gen_op_store_fpr_WT1, gen_op_store_fpr_WT1_fpr);

SFGEN32(gen_op_load_fpr_WT2,  gen_op_load_fpr_WT2_fpr);

SFGEN32(gen_op_store_fpr_WT2, gen_op_store_fpr_WT2_fpr);

DFGEN32(gen_op_load_fpr_DT0,  gen_op_load_fpr_DT0_fpr);

DFGEN32(gen_op_store_fpr_DT0, gen_op_store_fpr_DT0_fpr);

DFGEN32(gen_op_load_fpr_DT1,  gen_op_load_fpr_DT1_fpr);

DFGEN32(gen_op_store_fpr_DT1, gen_op_store_fpr_DT1_fpr);

DFGEN32(gen_op_load_fpr_DT2,  gen_op_load_fpr_DT2_fpr);

DFGEN32(gen_op_store_fpr_DT2, gen_op_store_fpr_DT2_fpr);

#define FOP_CONDS(fmt) \

static GenOpFunc * cond_ ## fmt ## _table[16] = {                       \

    gen_op_cmp_ ## fmt ## _f,                                           \

    gen_op_cmp_ ## fmt ## _un,                                          \

    gen_op_cmp_ ## fmt ## _eq,                                          \

    gen_op_cmp_ ## fmt ## _ueq,                                         \

    gen_op_cmp_ ## fmt ## _olt,                                         \

    gen_op_cmp_ ## fmt ## _ult,                                         \

    gen_op_cmp_ ## fmt ## _ole,                                         \

    gen_op_cmp_ ## fmt ## _ule,                                         \

    gen_op_cmp_ ## fmt ## _sf,                                          \

    gen_op_cmp_ ## fmt ## _ngle,                                        \

    gen_op_cmp_ ## fmt ## _seq,                                         \

    gen_op_cmp_ ## fmt ## _ngl,                                         \

    gen_op_cmp_ ## fmt ## _lt,                                          \

    gen_op_cmp_ ## fmt ## _nge,                                         \

    gen_op_cmp_ ## fmt ## _le,                                          \

    gen_op_cmp_ ## fmt ## _ngt,                                         \

};                                                                      \

static inline void gen_cmp_ ## fmt(int n)                               \

{                                                                       \

    cond_ ## fmt ## _table[n]();                                        \

}

FOP_CONDS(d)

FOP_CONDS(s)

#endif /* MIPS_USES_FPU */

typedef struct DisasContext {

    struct TranslationBlock *tb;

    target_ulong pc, saved_pc;

    uint32_t opcode;

    /* Routine used to access memory */

    int mem_idx;

    uint32_t hflags, saved_hflags;

    uint32_t CP0_Status;

    int bstate;

    target_ulong btarget;

} DisasContext;

enum {

    BS_NONE     = 0, /* We go out of the TB without reaching a branch or an

                      * exception condition

                      */

    BS_STOP     = 1, /* We want to stop translation for any reason */

    BS_BRANCH   = 2, /* We reached a branch condition     */

    BS_EXCP     = 3, /* We reached an exception condition */

};

#if defined MIPS_DEBUG_DISAS

#define MIPS_DEBUG(fmt, args...)                                              \

do {                                                                          \

    if (loglevel & CPU_LOG_TB_IN_ASM) {                                       \

        fprintf(logfile, TARGET_FMT_lx ": %08x " fmt "\n",                    \

                ctx->pc, ctx->opcode , ##args);                               \

    }                                                                         \

} while (0)

#else

#define MIPS_DEBUG(fmt, args...) do { } while(0)

#endif

#define MIPS_INVAL(op)                                                        \

do {                                                                          \

    MIPS_DEBUG("Invalid %s %03x %03x %03x", op, ctx->opcode >> 26,            \

               ctx->opcode & 0x3F, ((ctx->opcode >> 16) & 0x1F));             \

} while (0)

#define GEN_LOAD_REG_TN(Tn, Rn)                                               \

do {                                                                          \

    if (Rn == 0) {                                                            \

        glue(gen_op_reset_, Tn)();                                            \

    } else {                                                                  \

        glue(gen_op_load_gpr_, Tn)(Rn);                                       \

    }                                                                         \

} while (0)

#define GEN_LOAD_IMM_TN(Tn, Imm)                                              \

do {                                                                          \

    if (Imm == 0) {                                                           \

        glue(gen_op_reset_, Tn)();                                            \

    } else {                                                                  \

        glue(gen_op_set_, Tn)(Imm);                                           \

    }                                                                         \

} while (0)

#define GEN_STORE_TN_REG(Rn, Tn)                                              \

do {                                                                          \

    if (Rn != 0) {                                                            \

        glue(glue(gen_op_store_, Tn),_gpr)(Rn);                               \

    }                                                                         \

} while (0)

#define GEN_LOAD_FREG_FTN(FTn, Fn)                                            \

do {                                                                          \

    glue(gen_op_load_fpr_, FTn)(Fn);                                          \

} while (0)

#define GEN_STORE_FTN_FREG(Fn, FTn)                                           \

do {                                                                          \

    glue(gen_op_store_fpr_, FTn)(Fn);                                         \

} while (0)

static inline void save_cpu_state (DisasContext *ctx, int do_save_pc)

{

#if defined MIPS_DEBUG_DISAS

    if (loglevel & CPU_LOG_TB_IN_ASM) {

            fprintf(logfile, "hflags %08x saved %08x\n",

                    ctx->hflags, ctx->saved_hflags);

    }

#endif

    if (do_save_pc && ctx->pc != ctx->saved_pc) {

        gen_op_save_pc(ctx->pc);

        ctx->saved_pc = ctx->pc;

    }

    if (ctx->hflags != ctx->saved_hflags) {

        gen_op_save_state(ctx->hflags);

        ctx->saved_hflags = ctx->hflags;

        if (ctx->hflags & MIPS_HFLAG_BR) {

            gen_op_save_breg_target();

        } else if (ctx->hflags & MIPS_HFLAG_B) {

            gen_op_save_btarget(ctx->btarget);

        } else if (ctx->hflags & MIPS_HFLAG_BMASK) {

            gen_op_save_bcond();

            gen_op_save_btarget(ctx->btarget);

        }

    }

}

static inline void generate_exception_err (DisasContext *ctx, int excp, int err)

{

#if defined MIPS_DEBUG_DISAS

    if (loglevel & CPU_LOG_TB_IN_ASM)

            fprintf(logfile, "%s: raise exception %d\n", __func__, excp);

#endif

    save_cpu_state(ctx, 1);

    if (err == 0)

        gen_op_raise_exception(excp);

    else

        gen_op_raise_exception_err(excp, err);

    ctx->bstate = BS_EXCP;

}

static inline void generate_exception (DisasContext *ctx, int excp)

{

    generate_exception_err (ctx, excp, 0);

}

#if defined(CONFIG_USER_ONLY)

#define op_ldst(name)        gen_op_##name##_raw()

#define OP_LD_TABLE(width)

#define OP_ST_TABLE(width)

#else

#define op_ldst(name)        (*gen_op_##name[ctx->mem_idx])()

#define OP_LD_TABLE(width)                                                    \

static GenOpFunc *gen_op_l##width[] = {                                       \

    &gen_op_l##width##_user,                                                  \

    &gen_op_l##width##_kernel,                                                \

}

#define OP_ST_TABLE(width)                                                    \

static GenOpFunc *gen_op_s##width[] = {                                       \

    &gen_op_s##width##_user,                                                  \

    &gen_op_s##width##_kernel,                                                \

}

#endif

#ifdef MIPS_HAS_MIPS64

OP_LD_TABLE(d);

OP_LD_TABLE(dl);

OP_LD_TABLE(dr);

OP_ST_TABLE(d);

OP_ST_TABLE(dl);

OP_ST_TABLE(dr);

OP_LD_TABLE(ld);

OP_ST_TABLE(cd);

#endif

OP_LD_TABLE(w);

OP_LD_TABLE(wu);

OP_LD_TABLE(wl);

OP_LD_TABLE(wr);

OP_ST_TABLE(w);

OP_ST_TABLE(wl);

OP_ST_TABLE(wr);

OP_LD_TABLE(h);

OP_LD_TABLE(hu);

OP_ST_TABLE(h);

OP_LD_TABLE(b);

OP_LD_TABLE(bu);

OP_ST_TABLE(b);

OP_LD_TABLE(l);

OP_ST_TABLE(c);

#ifdef MIPS_USES_FPU

OP_LD_TABLE(wc1);

OP_ST_TABLE(wc1);

OP_LD_TABLE(dc1);

OP_ST_TABLE(dc1);

#endif

/* Load and store */

static void gen_ldst (DisasContext *ctx, uint32_t opc, int rt,

                      int base, int16_t offset)

{

    const char *opn = "unk";

    if (base == 0) {

        GEN_LOAD_IMM_TN(T0, offset);

    } else if (offset == 0) {

        gen_op_load_gpr_T0(base);

    } else {

        gen_op_load_gpr_T0(base);

        gen_op_set_T1(offset);

        gen_op_add();

    }

    /* Don't do NOP if destination is zero: we must perform the actual

     * memory access

     */

    switch (opc) {

#ifdef MIPS_HAS_MIPS64

    case OPC_LD:

        op_ldst(ld);

        GEN_STORE_TN_REG(rt, T0);

        opn = "ld";

        break;

    case OPC_LLD:

        op_ldst(lld);

        GEN_STORE_TN_REG(rt, T0);

        opn = "lld";

        break;

    case OPC_SD:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(sd);

        opn = "sd";

        break;

    case OPC_SCD:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(scd);

        opn = "scd";

        break;

    case OPC_LDL:

        op_ldst(ldl);

        GEN_STORE_TN_REG(rt, T0);

        opn = "ldl";

        break;

    case OPC_SDL:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(sdl);

        opn = "sdl";

        break;

    case OPC_LDR:

        op_ldst(ldr);

        GEN_STORE_TN_REG(rt, T0);

        opn = "ldr";

        break;

    case OPC_SDR:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(sdr);

        opn = "sdr";

        break;

#endif

    case OPC_LW:

        op_ldst(lw);

        GEN_STORE_TN_REG(rt, T0);

        opn = "lw";

        break;

    case OPC_LWU:

        op_ldst(lwu);

        GEN_STORE_TN_REG(rt, T0);

        opn = "lwu";

        break;

    case OPC_SW:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(sw);

        opn = "sw";

        break;

    case OPC_LH:

        op_ldst(lh);

        GEN_STORE_TN_REG(rt, T0);

        opn = "lh";

        break;

    case OPC_SH:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(sh);

        opn = "sh";

        break;

    case OPC_LHU:

        op_ldst(lhu);

        GEN_STORE_TN_REG(rt, T0);

        opn = "lhu";

        break;

    case OPC_LB:

        op_ldst(lb);

        GEN_STORE_TN_REG(rt, T0);

        opn = "lb";

        break;

    case OPC_SB:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(sb);

        opn = "sb";

        break;

    case OPC_LBU:

        op_ldst(lbu);

        GEN_STORE_TN_REG(rt, T0);

        opn = "lbu";

        break;

    case OPC_LWL:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(lwl);

        GEN_STORE_TN_REG(rt, T0);

        opn = "lwl";

        break;

    case OPC_SWL:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(swl);

        opn = "swr";

        break;

    case OPC_LWR:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(lwr);

        GEN_STORE_TN_REG(rt, T0);

        opn = "lwr";

        break;

    case OPC_SWR:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(swr);

        opn = "swr";

        break;

    case OPC_LL:

        op_ldst(ll);

        GEN_STORE_TN_REG(rt, T0);

        opn = "ll";

        break;

    case OPC_SC:

        GEN_LOAD_REG_TN(T1, rt);

        op_ldst(sc);

        GEN_STORE_TN_REG(rt, T0);

        opn = "sc";

        break;

    default:

        MIPS_INVAL("load/store");

        generate_exception(ctx, EXCP_RI);

        return;

    }

    MIPS_DEBUG("%s %s, %d(%s)", opn, regnames[rt], offset, regnames[base]);

}

#ifdef MIPS_USES_FPU

/* Load and store */

static void gen_flt_ldst (DisasContext *ctx, uint32_t opc, int ft,

                      int base, int16_t offset)

{

    const char *opn = "unk";

    if (base == 0) {

        GEN_LOAD_IMM_TN(T0, offset);

    } else if (offset == 0) {

        gen_op_load_gpr_T0(base);

    } else {

        gen_op_load_gpr_T0(base);

        gen_op_set_T1(offset);

        gen_op_add();

    }

    /* Don't do NOP if destination is zero: we must perform the actual

     * memory access

     */