/*
 *  PowerPC emulation for qemu: main translation routines.
 *
 *  Copyright (c) 2003-2007 Jocelyn Mayer
 *  Copyright (C) 2011 Freescale Semiconductor, Inc.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include "qemu/osdep.h"
#include "cpu.h"
#include "internal.h"
#include "disas/disas.h"
#include "exec/exec-all.h"
#include "tcg-op.h"
#include "qemu/host-utils.h"
#include "exec/cpu_ldst.h"

#include "exec/helper-proto.h"
#include "exec/helper-gen.h"

#include "trace-tcg.h"
#include "exec/log.h"


#define CPU_SINGLE_STEP 0x1
#define CPU_BRANCH_STEP 0x2
#define GDBSTUB_SINGLE_STEP 0x4

/* Include definitions for instructions classes and implementations flags */
//#define PPC_DEBUG_DISAS
//#define DO_PPC_STATISTICS

#ifdef PPC_DEBUG_DISAS
#  define LOG_DISAS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
#else
#  define LOG_DISAS(...) do { } while (0)
#endif
/*****************************************************************************/
/* Code translation helpers                                                  */

/* global register indexes */
static TCGv_env cpu_env;
static char cpu_reg_names[10*3 + 22*4 /* GPR */
    + 10*4 + 22*5 /* SPE GPRh */
    + 10*4 + 22*5 /* FPR */
    + 2*(10*6 + 22*7) /* AVRh, AVRl */
    + 10*5 + 22*6 /* VSR */
    + 8*5 /* CRF */];
static TCGv cpu_gpr[32];
static TCGv cpu_gprh[32];
static TCGv_i64 cpu_fpr[32];
static TCGv_i64 cpu_avrh[32], cpu_avrl[32];
static TCGv_i64 cpu_vsr[32];
static TCGv_i32 cpu_crf[8];
static TCGv cpu_nip;
static TCGv cpu_msr;
static TCGv cpu_ctr;
static TCGv cpu_lr;
#if defined(TARGET_PPC64)
static TCGv cpu_cfar;
#endif
static TCGv cpu_xer, cpu_so, cpu_ov, cpu_ca, cpu_ov32, cpu_ca32;
static TCGv cpu_reserve;
static TCGv cpu_reserve_val;
static TCGv cpu_fpscr;
static TCGv_i32 cpu_access_type;

#include "exec/gen-icount.h"

void ppc_translate_init(void)
{
    int i;
    char* p;
    size_t cpu_reg_names_size;
    static int done_init = 0;

    if (done_init)
        return;

    cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
    tcg_ctx.tcg_env = cpu_env;

    p = cpu_reg_names;
    cpu_reg_names_size = sizeof(cpu_reg_names);

    for (i = 0; i < 8; i++) {
        snprintf(p, cpu_reg_names_size, "crf%d", i);
        cpu_crf[i] = tcg_global_mem_new_i32(cpu_env,
                                            offsetof(CPUPPCState, crf[i]), p);
        p += 5;
        cpu_reg_names_size -= 5;
    }

    for (i = 0; i < 32; i++) {
        snprintf(p, cpu_reg_names_size, "r%d", i);
        cpu_gpr[i] = tcg_global_mem_new(cpu_env,
                                        offsetof(CPUPPCState, gpr[i]), p);
        p += (i < 10) ? 3 : 4;
        cpu_reg_names_size -= (i < 10) ? 3 : 4;
        snprintf(p, cpu_reg_names_size, "r%dH", i);
        cpu_gprh[i] = tcg_global_mem_new(cpu_env,
                                         offsetof(CPUPPCState, gprh[i]), p);
        p += (i < 10) ? 4 : 5;
        cpu_reg_names_size -= (i < 10) ? 4 : 5;

        snprintf(p, cpu_reg_names_size, "fp%d", i);
        cpu_fpr[i] = tcg_global_mem_new_i64(cpu_env,
                                            offsetof(CPUPPCState, fpr[i]), p);
        p += (i < 10) ? 4 : 5;
        cpu_reg_names_size -= (i < 10) ? 4 : 5;

        snprintf(p, cpu_reg_names_size, "avr%dH", i);
#ifdef HOST_WORDS_BIGENDIAN
        cpu_avrh[i] = tcg_global_mem_new_i64(cpu_env,
                                             offsetof(CPUPPCState, avr[i].u64[0]), p);
#else
        cpu_avrh[i] = tcg_global_mem_new_i64(cpu_env,
                                             offsetof(CPUPPCState, avr[i].u64[1]), p);
#endif
        p += (i < 10) ? 6 : 7;
        cpu_reg_names_size -= (i < 10) ? 6 : 7;

        snprintf(p, cpu_reg_names_size, "avr%dL", i);
#ifdef HOST_WORDS_BIGENDIAN
        cpu_avrl[i] = tcg_global_mem_new_i64(cpu_env,
                                             offsetof(CPUPPCState, avr[i].u64[1]), p);
#else
        cpu_avrl[i] = tcg_global_mem_new_i64(cpu_env,
                                             offsetof(CPUPPCState, avr[i].u64[0]), p);
#endif
        p += (i < 10) ? 6 : 7;
        cpu_reg_names_size -= (i < 10) ? 6 : 7;
        snprintf(p, cpu_reg_names_size, "vsr%d", i);
        cpu_vsr[i] = tcg_global_mem_new_i64(cpu_env,
                                            offsetof(CPUPPCState, vsr[i]), p);
        p += (i < 10) ? 5 : 6;
        cpu_reg_names_size -= (i < 10) ? 5 : 6;
    }

    cpu_nip = tcg_global_mem_new(cpu_env,
                                 offsetof(CPUPPCState, nip), "nip");

    cpu_msr = tcg_global_mem_new(cpu_env,
                                 offsetof(CPUPPCState, msr), "msr");

    cpu_ctr = tcg_global_mem_new(cpu_env,
                                 offsetof(CPUPPCState, ctr), "ctr");

    cpu_lr = tcg_global_mem_new(cpu_env,
                                offsetof(CPUPPCState, lr), "lr");

#if defined(TARGET_PPC64)
    cpu_cfar = tcg_global_mem_new(cpu_env,
                                  offsetof(CPUPPCState, cfar), "cfar");
#endif

    cpu_xer = tcg_global_mem_new(cpu_env,
                                 offsetof(CPUPPCState, xer), "xer");
    cpu_so = tcg_global_mem_new(cpu_env,
                                offsetof(CPUPPCState, so), "SO");
    cpu_ov = tcg_global_mem_new(cpu_env,
                                offsetof(CPUPPCState, ov), "OV");
    cpu_ca = tcg_global_mem_new(cpu_env,
                                offsetof(CPUPPCState, ca), "CA");
    cpu_ov32 = tcg_global_mem_new(cpu_env,
                                  offsetof(CPUPPCState, ov32), "OV32");
    cpu_ca32 = tcg_global_mem_new(cpu_env,
                                  offsetof(CPUPPCState, ca32), "CA32");

    cpu_reserve = tcg_global_mem_new(cpu_env,
                                     offsetof(CPUPPCState, reserve_addr),
                                     "reserve_addr");
    cpu_reserve_val = tcg_global_mem_new(cpu_env,
                                     offsetof(CPUPPCState, reserve_val),
                                     "reserve_val");

    cpu_fpscr = tcg_global_mem_new(cpu_env,
                                   offsetof(CPUPPCState, fpscr), "fpscr");

    cpu_access_type = tcg_global_mem_new_i32(cpu_env,
                                             offsetof(CPUPPCState, access_type), "access_type");

    done_init = 1;
}

/* internal defines */
struct DisasContext {
    struct TranslationBlock *tb;
    target_ulong nip;
    uint32_t opcode;
    uint32_t exception;
    /* Routine used to access memory */
    bool pr, hv, dr, le_mode;
    bool lazy_tlb_flush;
    bool need_access_type;
    int mem_idx;
    int access_type;
    /* Translation flags */
    TCGMemOp default_tcg_memop_mask;
#if defined(TARGET_PPC64)
    bool sf_mode;
    bool has_cfar;
#endif
    bool fpu_enabled;
    bool altivec_enabled;
    bool vsx_enabled;
    bool spe_enabled;
    bool tm_enabled;
    bool gtse;
    ppc_spr_t *spr_cb; /* Needed to check rights for mfspr/mtspr */
    int singlestep_enabled;
    uint64_t insns_flags;
    uint64_t insns_flags2;
};

/* Return true iff byteswap is needed in a scalar memop */
static inline bool need_byteswap(const DisasContext *ctx)
{
#if defined(TARGET_WORDS_BIGENDIAN)
     return ctx->le_mode;
#else
     return !ctx->le_mode;
#endif
}

/* True when active word size < size of target_long.  */
#ifdef TARGET_PPC64
# define NARROW_MODE(C)  (!(C)->sf_mode)
#else
# define NARROW_MODE(C)  0
#endif

struct opc_handler_t {
    /* invalid bits for instruction 1 (Rc(opcode) == 0) */
    uint32_t inval1;
    /* invalid bits for instruction 2 (Rc(opcode) == 1) */
    uint32_t inval2;
    /* instruction type */
    uint64_t type;
    /* extended instruction type */
    uint64_t type2;
    /* handler */
    void (*handler)(DisasContext *ctx);
#if defined(DO_PPC_STATISTICS) || defined(PPC_DUMP_CPU)
    const char *oname;
#endif
#if defined(DO_PPC_STATISTICS)
    uint64_t count;
#endif
};

static inline void gen_set_access_type(DisasContext *ctx, int access_type)
{
    if (ctx->need_access_type && ctx->access_type != access_type) {
        tcg_gen_movi_i32(cpu_access_type, access_type);
        ctx->access_type = access_type;
    }
}

static inline void gen_update_nip(DisasContext *ctx, target_ulong nip)
{
    if (NARROW_MODE(ctx)) {
        nip = (uint32_t)nip;
    }
    tcg_gen_movi_tl(cpu_nip, nip);
}

static void gen_exception_err(DisasContext *ctx, uint32_t excp, uint32_t error)
{
    TCGv_i32 t0, t1;

    /* These are all synchronous exceptions, we set the PC back to
     * the faulting instruction
     */
    if (ctx->exception == POWERPC_EXCP_NONE) {
        gen_update_nip(ctx, ctx->nip - 4);
    }
    t0 = tcg_const_i32(excp);
    t1 = tcg_const_i32(error);
    gen_helper_raise_exception_err(cpu_env, t0, t1);
    tcg_temp_free_i32(t0);
    tcg_temp_free_i32(t1);
    ctx->exception = (excp);
}

static void gen_exception(DisasContext *ctx, uint32_t excp)
{
    TCGv_i32 t0;

    /* These are all synchronous exceptions, we set the PC back to
     * the faulting instruction
     */
    if (ctx->exception == POWERPC_EXCP_NONE) {
        gen_update_nip(ctx, ctx->nip - 4);
    }
    t0 = tcg_const_i32(excp);
    gen_helper_raise_exception(cpu_env, t0);
    tcg_temp_free_i32(t0);
    ctx->exception = (excp);
}

static void gen_exception_nip(DisasContext *ctx, uint32_t excp,
                              target_ulong nip)
{
    TCGv_i32 t0;

    gen_update_nip(ctx, nip);
    t0 = tcg_const_i32(excp);
    gen_helper_raise_exception(cpu_env, t0);
    tcg_temp_free_i32(t0);
    ctx->exception = (excp);
}

static void gen_debug_exception(DisasContext *ctx)
{
    TCGv_i32 t0;

    /* These are all synchronous exceptions, we set the PC back to
     * the faulting instruction
     */
    if ((ctx->exception != POWERPC_EXCP_BRANCH) &&
        (ctx->exception != POWERPC_EXCP_SYNC)) {
        gen_update_nip(ctx, ctx->nip);
    }
    t0 = tcg_const_i32(EXCP_DEBUG);
    gen_helper_raise_exception(cpu_env, t0);
    tcg_temp_free_i32(t0);
}

static inline void gen_inval_exception(DisasContext *ctx, uint32_t error)
{
    /* Will be converted to program check if needed */
    gen_exception_err(ctx, POWERPC_EXCP_HV_EMU, POWERPC_EXCP_INVAL | error);
}

static inline void gen_priv_exception(DisasContext *ctx, uint32_t error)
{
    gen_exception_err(ctx, POWERPC_EXCP_PROGRAM, POWERPC_EXCP_PRIV | error);
}

static inline void gen_hvpriv_exception(DisasContext *ctx, uint32_t error)
{
    /* Will be converted to program check if needed */
    gen_exception_err(ctx, POWERPC_EXCP_HV_EMU, POWERPC_EXCP_PRIV | error);
}

/* Stop translation */
static inline void gen_stop_exception(DisasContext *ctx)
{
    gen_update_nip(ctx, ctx->nip);
    ctx->exception = POWERPC_EXCP_STOP;
}

#ifndef CONFIG_USER_ONLY
/* No need to update nip here, as execution flow will change */
static inline void gen_sync_exception(DisasContext *ctx)
{
    ctx->exception = POWERPC_EXCP_SYNC;
}
#endif

#define GEN_HANDLER(name, opc1, opc2, opc3, inval, type)                      \
GEN_OPCODE(name, opc1, opc2, opc3, inval, type, PPC_NONE)

#define GEN_HANDLER_E(name, opc1, opc2, opc3, inval, type, type2)             \
GEN_OPCODE(name, opc1, opc2, opc3, inval, type, type2)

#define GEN_HANDLER2(name, onam, opc1, opc2, opc3, inval, type)               \
GEN_OPCODE2(name, onam, opc1, opc2, opc3, inval, type, PPC_NONE)

#define GEN_HANDLER2_E(name, onam, opc1, opc2, opc3, inval, type, type2)      \
GEN_OPCODE2(name, onam, opc1, opc2, opc3, inval, type, type2)

#define GEN_HANDLER_E_2(name, opc1, opc2, opc3, opc4, inval, type, type2)     \
GEN_OPCODE3(name, opc1, opc2, opc3, opc4, inval, type, type2)

#define GEN_HANDLER2_E_2(name, onam, opc1, opc2, opc3, opc4, inval, typ, typ2) \
GEN_OPCODE4(name, onam, opc1, opc2, opc3, opc4, inval, typ, typ2)

typedef struct opcode_t {
    unsigned char opc1, opc2, opc3, opc4;
#if HOST_LONG_BITS == 64 /* Explicitly align to 64 bits */
    unsigned char pad[4];
#endif
    opc_handler_t handler;
    const char *oname;
} opcode_t;

/* Helpers for priv. check */
#define GEN_PRIV                                                \
    do {                                                        \
        gen_priv_exception(ctx, POWERPC_EXCP_PRIV_OPC); return; \
    } while (0)

#if defined(CONFIG_USER_ONLY)
#define CHK_HV GEN_PRIV
#define CHK_SV GEN_PRIV
#define CHK_HVRM GEN_PRIV
#else
#define CHK_HV                                                          \
    do {                                                                \
        if (unlikely(ctx->pr || !ctx->hv)) {                            \
            GEN_PRIV;                                                   \
        }                                                               \
    } while (0)
#define CHK_SV                   \
    do {                         \
        if (unlikely(ctx->pr)) { \
            GEN_PRIV;            \
        }                        \
    } while (0)
#define CHK_HVRM                                            \
    do {                                                    \
        if (unlikely(ctx->pr || !ctx->hv || ctx->dr)) {     \
            GEN_PRIV;                                       \
        }                                                   \
    } while (0)
#endif

#define CHK_NONE

/*****************************************************************************/
/* PowerPC instructions table                                                */

#if defined(DO_PPC_STATISTICS)
#define GEN_OPCODE(name, op1, op2, op3, invl, _typ, _typ2)                    \
{                                                                             \
    .opc1 = op1,                                                              \
    .opc2 = op2,                                                              \
    .opc3 = op3,                                                              \
    .opc4 = 0xff,                                                             \
    .handler = {                                                              \
        .inval1  = invl,                                                      \
        .type = _typ,                                                         \
        .type2 = _typ2,                                                       \
        .handler = &gen_##name,                                               \
        .oname = stringify(name),                                             \
    },                                                                        \
    .oname = stringify(name),                                                 \
}
#define GEN_OPCODE_DUAL(name, op1, op2, op3, invl1, invl2, _typ, _typ2)       \
{                                                                             \
    .opc1 = op1,                                                              \
    .opc2 = op2,                                                              \
    .opc3 = op3,                                                              \
    .opc4 = 0xff,                                                             \
    .handler = {                                                              \
        .inval1  = invl1,                                                     \
        .inval2  = invl2,                                                     \
        .type = _typ,                                                         \
        .type2 = _typ2,                                                       \
        .handler = &gen_##name,                                               \
        .oname = stringify(name),                                             \
    },                                                                        \
    .oname = stringify(name),                                                 \
}
#define GEN_OPCODE2(name, onam, op1, op2, op3, invl, _typ, _typ2)             \
{                                                                             \
    .opc1 = op1,                                                              \
    .opc2 = op2,                                                              \
    .opc3 = op3,                                                              \
    .opc4 = 0xff,                                                             \
    .handler = {                                                              \
        .inval1  = invl,                                                      \
        .type = _typ,                                                         \
        .type2 = _typ2,                                                       \
        .handler = &gen_##name,                                               \
        .oname = onam,                                                        \
    },                                                                        \
    .oname = onam,                                                            \
}
#define GEN_OPCODE3(name, op1, op2, op3, op4, invl, _typ, _typ2)              \
{                                                                             \
    .opc1 = op1,                                                              \
    .opc2 = op2,                                                              \
    .opc3 = op3,                                                              \
    .opc4 = op4,                                                              \
    .handler = {                                                              \
        .inval1  = invl,                                                      \
        .type = _typ,                                                         \
        .type2 = _typ2,                                                       \
        .handler = &gen_##name,                                               \
        .oname = stringify(name),                                             \
    },                                                                        \
    .oname = stringify(name),                                                 \
}
#define GEN_OPCODE4(name, onam, op1, op2, op3, op4, invl, _typ, _typ2)        \
{                                                                             \
    .opc1 = op1,                                                              \
    .opc2 = op2,                                                              \
    .opc3 = op3,                                                              \
    .opc4 = op4,                                                              \
    .handler = {                                                              \
        .inval1  = invl,                                                      \
        .type = _typ,                                                         \
        .type2 = _typ2,                                                       \
        .handler = &gen_##name,                                               \
        .oname = onam,                                                        \
    },                                                                        \
    .oname = onam,                                                            \
}
#else
#define GEN_OPCODE(name, op1, op2, op3, invl, _typ, _typ2)                    \
{                                                                             \
    .opc1 = op1,                                                              \
    .opc2 = op2,                                                              \
    .opc3 = op3,                                                              \
    .opc4 = 0xff,                                                             \
    .handler = {                                                              \
        .inval1  = invl,                                                      \
        .type = _typ,                                                         \
        .type2 = _typ2,                                                       \
        .handler = &gen_##name,                                               \
    },                                                                        \
    .oname = stringify(name),                                                 \
}
#define GEN_OPCODE_DUAL(name, op1, op2, op3, invl1, invl2, _typ, _typ2)       \
{                                                                             \
    .opc1 = op1,                                                              \
    .opc2 = op2,                                                              \
    .opc3 = op3,                                                              \
    .opc4 = 0xff,                                                             \
    .handler = {                                                              \
        .inval1  = invl1,                                                     \
        .inval2  = invl2,                                                     \
        .type = _typ,                                                         \
        .type2 = _typ2,                                                       \
        .handler = &gen_##name,                                               \
    },                                                                        \
    .oname = stringify(name),                                                 \
}
#define GEN_OPCODE2(name, onam, op1, op2, op3, invl, _typ, _typ2)             \
{                                                                             \
    .opc1 = op1,                                                              \
    .opc2 = op2,                                                              \
    .opc3 = op3,                                                              \
    .opc4 = 0xff,                                                             \
    .handler = {                                                              \
        .inval1  = invl,                                                      \
        .type = _typ,                                                         \
        .type2 = _typ2,                                                       \
        .handler = &gen_##name,                                               \
    },                                                                        \
    .oname = onam,                                                            \
}
#define GEN_OPCODE3(name, op1, op2, op3, op4, invl, _typ, _typ2)              \
{                                                                             \
    .opc1 = op1,                                                              \
    .opc2 = op2,                                                              \
    .opc3 = op3,                                                              \
    .opc4 = op4,                                                              \
    .handler = {                                                              \
        .inval1  = invl,                                                      \
        .type = _typ,                                                         \
        .type2 = _typ2,                                                       \
        .handler = &gen_##name,                                               \
    },                                                                        \
    .oname = stringify(name),                                                 \
}
#define GEN_OPCODE4(name, onam, op1, op2, op3, op4, invl, _typ, _typ2)        \
{                                                                             \
    .opc1 = op1,                                                              \
    .opc2 = op2,                                                              \
    .opc3 = op3,                                                              \
    .opc4 = op4,                                                              \
    .handler = {                                                              \
        .inval1  = invl,                                                      \
        .type = _typ,                                                         \
        .type2 = _typ2,                                                       \
        .handler = &gen_##name,                                               \
    },                                                                        \
    .oname = onam,                                                            \
}
#endif

/* SPR load/store helpers */
static inline void gen_load_spr(TCGv t, int reg)
{
    tcg_gen_ld_tl(t, cpu_env, offsetof(CPUPPCState, spr[reg]));
}

static inline void gen_store_spr(int reg, TCGv t)
{
    tcg_gen_st_tl(t, cpu_env, offsetof(CPUPPCState, spr[reg]));
}

/* Invalid instruction */
static void gen_invalid(DisasContext *ctx)
{
    gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);
}

static opc_handler_t invalid_handler = {
    .inval1  = 0xFFFFFFFF,
    .inval2  = 0xFFFFFFFF,
    .type    = PPC_NONE,
    .type2   = PPC_NONE,
    .handler = gen_invalid,
};

/***                           Integer comparison                          ***/

static inline void gen_op_cmp(TCGv arg0, TCGv arg1, int s, int crf)
{
    TCGv t0 = tcg_temp_new();
    TCGv_i32 t1 = tcg_temp_new_i32();

    tcg_gen_trunc_tl_i32(cpu_crf[crf], cpu_so);

    tcg_gen_setcond_tl((s ? TCG_COND_LT: TCG_COND_LTU), t0, arg0, arg1);
    tcg_gen_trunc_tl_i32(t1, t0);
    tcg_gen_shli_i32(t1, t1, CRF_LT_BIT);
    tcg_gen_or_i32(cpu_crf[crf], cpu_crf[crf], t1);

    tcg_gen_setcond_tl((s ? TCG_COND_GT: TCG_COND_GTU), t0, arg0, arg1);
    tcg_gen_trunc_tl_i32(t1, t0);
    tcg_gen_shli_i32(t1, t1, CRF_GT_BIT);
    tcg_gen_or_i32(cpu_crf[crf], cpu_crf[crf], t1);

    tcg_gen_setcond_tl(TCG_COND_EQ, t0, arg0, arg1);
    tcg_gen_trunc_tl_i32(t1, t0);
    tcg_gen_shli_i32(t1, t1, CRF_EQ_BIT);
    tcg_gen_or_i32(cpu_crf[crf], cpu_crf[crf], t1);

    tcg_temp_free(t0);
    tcg_temp_free_i32(t1);
}

static inline void gen_op_cmpi(TCGv arg0, target_ulong arg1, int s, int crf)
{
    TCGv t0 = tcg_const_tl(arg1);
    gen_op_cmp(arg0, t0, s, crf);
    tcg_temp_free(t0);
}

static inline void gen_op_cmp32(TCGv arg0, TCGv arg1, int s, int crf)
{
    TCGv t0, t1;
    t0 = tcg_temp_new();
    t1 = tcg_temp_new();
    if (s) {
        tcg_gen_ext32s_tl(t0, arg0);
        tcg_gen_ext32s_tl(t1, arg1);
    } else {
        tcg_gen_ext32u_tl(t0, arg0);
        tcg_gen_ext32u_tl(t1, arg1);
    }
    gen_op_cmp(t0, t1, s, crf);
    tcg_temp_free(t1);
    tcg_temp_free(t0);
}

static inline void gen_op_cmpi32(TCGv arg0, target_ulong arg1, int s, int crf)
{
    TCGv t0 = tcg_const_tl(arg1);
    gen_op_cmp32(arg0, t0, s, crf);
    tcg_temp_free(t0);
}

static inline void gen_set_Rc0(DisasContext *ctx, TCGv reg)
{
    if (NARROW_MODE(ctx)) {
        gen_op_cmpi32(reg, 0, 1, 0);
    } else {
        gen_op_cmpi(reg, 0, 1, 0);
    }
}

/* cmp */
static void gen_cmp(DisasContext *ctx)
{
    if ((ctx->opcode & 0x00200000) && (ctx->insns_flags & PPC_64B)) {
        gen_op_cmp(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],
                   1, crfD(ctx->opcode));
    } else {
        gen_op_cmp32(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],
                     1, crfD(ctx->opcode));
    }
}

/* cmpi */
static void gen_cmpi(DisasContext *ctx)
{
    if ((ctx->opcode & 0x00200000) && (ctx->insns_flags & PPC_64B)) {
        gen_op_cmpi(cpu_gpr[rA(ctx->opcode)], SIMM(ctx->opcode),
                    1, crfD(ctx->opcode));
    } else {
        gen_op_cmpi32(cpu_gpr[rA(ctx->opcode)], SIMM(ctx->opcode),
                      1, crfD(ctx->opcode));
    }
}

/* cmpl */
static void gen_cmpl(DisasContext *ctx)
{
    if ((ctx->opcode & 0x00200000) && (ctx->insns_flags & PPC_64B)) {
        gen_op_cmp(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],
                   0, crfD(ctx->opcode));
    } else {
        gen_op_cmp32(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],
                     0, crfD(ctx->opcode));
    }
}

/* cmpli */
static void gen_cmpli(DisasContext *ctx)
{
    if ((ctx->opcode & 0x00200000) && (ctx->insns_flags & PPC_64B)) {
        gen_op_cmpi(cpu_gpr[rA(ctx->opcode)], UIMM(ctx->opcode),
                    0, crfD(ctx->opcode));
    } else {
        gen_op_cmpi32(cpu_gpr[rA(ctx->opcode)], UIMM(ctx->opcode),
                      0, crfD(ctx->opcode));
    }
}

/* cmprb - range comparison: isupper, isaplha, islower*/
static void gen_cmprb(DisasContext *ctx)
{
    TCGv_i32 src1 = tcg_temp_new_i32();
    TCGv_i32 src2 = tcg_temp_new_i32();
    TCGv_i32 src2lo = tcg_temp_new_i32();
    TCGv_i32 src2hi = tcg_temp_new_i32();
    TCGv_i32 crf = cpu_crf[crfD(ctx->opcode)];

    tcg_gen_trunc_tl_i32(src1, cpu_gpr[rA(ctx->opcode)]);
    tcg_gen_trunc_tl_i32(src2, cpu_gpr[rB(ctx->opcode)]);

    tcg_gen_andi_i32(src1, src1, 0xFF);
    tcg_gen_ext8u_i32(src2lo, src2);
    tcg_gen_shri_i32(src2, src2, 8);
    tcg_gen_ext8u_i32(src2hi, src2);

    tcg_gen_setcond_i32(TCG_COND_LEU, src2lo, src2lo, src1);
    tcg_gen_setcond_i32(TCG_COND_LEU, src2hi, src1, src2hi);
    tcg_gen_and_i32(crf, src2lo, src2hi);

    if (ctx->opcode & 0x00200000) {
        tcg_gen_shri_i32(src2, src2, 8);
        tcg_gen_ext8u_i32(src2lo, src2);
        tcg_gen_shri_i32(src2, src2, 8);
        tcg_gen_ext8u_i32(src2hi, src2);
        tcg_gen_setcond_i32(TCG_COND_LEU, src2lo, src2lo, src1);
        tcg_gen_setcond_i32(TCG_COND_LEU, src2hi, src1, src2hi);
        tcg_gen_and_i32(src2lo, src2lo, src2hi);
        tcg_gen_or_i32(crf, crf, src2lo);
    }
    tcg_gen_shli_i32(crf, crf, CRF_GT_BIT);
    tcg_temp_free_i32(src1);
    tcg_temp_free_i32(src2);
    tcg_temp_free_i32(src2lo);
    tcg_temp_free_i32(src2hi);
}

#if defined(TARGET_PPC64)
/* cmpeqb */
static void gen_cmpeqb(DisasContext *ctx)
{
    gen_helper_cmpeqb(cpu_crf[crfD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
                      cpu_gpr[rB(ctx->opcode)]);
}
#endif

/* isel (PowerPC 2.03 specification) */
static void gen_isel(DisasContext *ctx)
{
    uint32_t bi = rC(ctx->opcode);
    uint32_t mask = 0x08 >> (bi & 0x03);
    TCGv t0 = tcg_temp_new();
    TCGv zr;

    tcg_gen_extu_i32_tl(t0, cpu_crf[bi >> 2]);
    tcg_gen_andi_tl(t0, t0, mask);

    zr = tcg_const_tl(0);
    tcg_gen_movcond_tl(TCG_COND_NE, cpu_gpr[rD(ctx->opcode)], t0, zr,
                       rA(ctx->opcode) ? cpu_gpr[rA(ctx->opcode)] : zr,
                       cpu_gpr[rB(ctx->opcode)]);
    tcg_temp_free(zr);
    tcg_temp_free(t0);
}

/* cmpb: PowerPC 2.05 specification */
static void gen_cmpb(DisasContext *ctx)
{
    gen_helper_cmpb(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)],
                    cpu_gpr[rB(ctx->opcode)]);
}

/***                           Integer arithmetic                          ***/

static inline void gen_op_arith_compute_ov(DisasContext *ctx, TCGv arg0,
                                           TCGv arg1, TCGv arg2, int sub)
{
    TCGv t0 = tcg_temp_new();

    tcg_gen_xor_tl(cpu_ov, arg0, arg2);
    tcg_gen_xor_tl(t0, arg1, arg2);
    if (sub) {
        tcg_gen_and_tl(cpu_ov, cpu_ov, t0);
    } else {
        tcg_gen_andc_tl(cpu_ov, cpu_ov, t0);
    }
    tcg_temp_free(t0);
    if (NARROW_MODE(ctx)) {
        tcg_gen_extract_tl(cpu_ov, cpu_ov, 31, 1);
        if (is_isa300(ctx)) {
            tcg_gen_mov_tl(cpu_ov32, cpu_ov);
        }
    } else {
        if (is_isa300(ctx)) {
            tcg_gen_extract_tl(cpu_ov32, cpu_ov, 31, 1);
        }
        tcg_gen_extract_tl(cpu_ov, cpu_ov, TARGET_LONG_BITS - 1, 1);
    }
    tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov);
}

static inline void gen_op_arith_compute_ca32(DisasContext *ctx,
                                             TCGv res, TCGv arg0, TCGv arg1,
                                             int sub)
{
    TCGv t0;

    if (!is_isa300(ctx)) {
        return;
    }

    t0 = tcg_temp_new();
    if (sub) {
        tcg_gen_eqv_tl(t0, arg0, arg1);
    } else {
        tcg_gen_xor_tl(t0, arg0, arg1);
    }
    tcg_gen_xor_tl(t0, t0, res);
    tcg_gen_extract_tl(cpu_ca32, t0, 32, 1);
    tcg_temp_free(t0);
}

/* Common add function */
static inline void gen_op_arith_add(DisasContext *ctx, TCGv ret, TCGv arg1,
                                    TCGv arg2, bool add_ca, bool compute_ca,
                                    bool compute_ov, bool compute_rc0)
{
    TCGv t0 = ret;

    if (compute_ca || compute_ov) {
        t0 = tcg_temp_new();
    }

    if (compute_ca) {
        if (NARROW_MODE(ctx)) {
            /* Caution: a non-obvious corner case of the spec is that we
               must produce the *entire* 64-bit addition, but produce the
               carry into bit 32.  */
            TCGv t1 = tcg_temp_new();
            tcg_gen_xor_tl(t1, arg1, arg2);        /* add without carry */
            tcg_gen_add_tl(t0, arg1, arg2);
            if (add_ca) {
                tcg_gen_add_tl(t0, t0, cpu_ca);
            }
            tcg_gen_xor_tl(cpu_ca, t0, t1);        /* bits changed w/ carry */
            tcg_temp_free(t1);
            tcg_gen_extract_tl(cpu_ca, cpu_ca, 32, 1);
            if (is_isa300(ctx)) {
                tcg_gen_mov_tl(cpu_ca32, cpu_ca);
            }
        } else {
            TCGv zero = tcg_const_tl(0);
            if (add_ca) {
                tcg_gen_add2_tl(t0, cpu_ca, arg1, zero, cpu_ca, zero);
                tcg_gen_add2_tl(t0, cpu_ca, t0, cpu_ca, arg2, zero);
            } else {
                tcg_gen_add2_tl(t0, cpu_ca, arg1, zero, arg2, zero);
            }
            gen_op_arith_compute_ca32(ctx, t0, arg1, arg2, 0);
            tcg_temp_free(zero);
        }
    } else {
        tcg_gen_add_tl(t0, arg1, arg2);
        if (add_ca) {
            tcg_gen_add_tl(t0, t0, cpu_ca);
        }
    }

    if (compute_ov) {
        gen_op_arith_compute_ov(ctx, t0, arg1, arg2, 0);
    }
    if (unlikely(compute_rc0)) {
        gen_set_Rc0(ctx, t0);
    }

    if (!TCGV_EQUAL(t0, ret)) {
        tcg_gen_mov_tl(ret, t0);
        tcg_temp_free(t0);
    }
}
/* Add functions with two operands */
#define GEN_INT_ARITH_ADD(name, opc3, add_ca, compute_ca, compute_ov)         \
static void glue(gen_, name)(DisasContext *ctx)                               \
{                                                                             \
    gen_op_arith_add(ctx, cpu_gpr[rD(ctx->opcode)],                           \
                     cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],      \
                     add_ca, compute_ca, compute_ov, Rc(ctx->opcode));        \
}
/* Add functions with one operand and one immediate */
#define GEN_INT_ARITH_ADD_CONST(name, opc3, const_val,                        \
                                add_ca, compute_ca, compute_ov)               \
static void glue(gen_, name)(DisasContext *ctx)                               \
{                                                                             \
    TCGv t0 = tcg_const_tl(const_val);                                        \
    gen_op_arith_add(ctx, cpu_gpr[rD(ctx->opcode)],                           \
                     cpu_gpr[rA(ctx->opcode)], t0,                            \
                     add_ca, compute_ca, compute_ov, Rc(ctx->opcode));        \
    tcg_temp_free(t0);                                                        \
}

/* add  add.  addo  addo. */
GEN_INT_ARITH_ADD(add, 0x08, 0, 0, 0)
GEN_INT_ARITH_ADD(addo, 0x18, 0, 0, 1)
/* addc  addc.  addco  addco. */
GEN_INT_ARITH_ADD(addc, 0x00, 0, 1, 0)
GEN_INT_ARITH_ADD(addco, 0x10, 0, 1, 1)
/* adde  adde.  addeo  addeo. */
GEN_INT_ARITH_ADD(adde, 0x04, 1, 1, 0)
GEN_INT_ARITH_ADD(addeo, 0x14, 1, 1, 1)
/* addme  addme.  addmeo  addmeo.  */
GEN_INT_ARITH_ADD_CONST(addme, 0x07, -1LL, 1, 1, 0)
GEN_INT_ARITH_ADD_CONST(addmeo, 0x17, -1LL, 1, 1, 1)
/* addze  addze.  addzeo  addzeo.*/
GEN_INT_ARITH_ADD_CONST(addze, 0x06, 0, 1, 1, 0)
GEN_INT_ARITH_ADD_CONST(addzeo, 0x16, 0, 1, 1, 1)
/* addi */
static void gen_addi(DisasContext *ctx)
{
    target_long simm = SIMM(ctx->opcode);

    if (rA(ctx->opcode) == 0) {
        /* li case */
        tcg_gen_movi_tl(cpu_gpr[rD(ctx->opcode)], simm);
    } else {
        tcg_gen_addi_tl(cpu_gpr[rD(ctx->opcode)],
                        cpu_gpr[rA(ctx->opcode)], simm);
    }
}
/* addic  addic.*/
static inline void gen_op_addic(DisasContext *ctx, bool compute_rc0)
{
    TCGv c = tcg_const_tl(SIMM(ctx->opcode));
    gen_op_arith_add(ctx, cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
                     c, 0, 1, 0, compute_rc0);
    tcg_temp_free(c);
}

static void gen_addic(DisasContext *ctx)
{
    gen_op_addic(ctx, 0);
}

static void gen_addic_(DisasContext *ctx)
{
    gen_op_addic(ctx, 1);
}

/* addis */
static void gen_addis(DisasContext *ctx)
{
    target_long simm = SIMM(ctx->opcode);

    if (rA(ctx->opcode) == 0) {
        /* lis case */
        tcg_gen_movi_tl(cpu_gpr[rD(ctx->opcode)], simm << 16);
    } else {
        tcg_gen_addi_tl(cpu_gpr[rD(ctx->opcode)],
                        cpu_gpr[rA(ctx->opcode)], simm << 16);
    }
}

/* addpcis */
static void gen_addpcis(DisasContext *ctx)
{
    target_long d = DX(ctx->opcode);

    tcg_gen_movi_tl(cpu_gpr[rD(ctx->opcode)], ctx->nip + (d << 16));
}

static inline void gen_op_arith_divw(DisasContext *ctx, TCGv ret, TCGv arg1,
                                     TCGv arg2, int sign, int compute_ov)

{
    TCGv_i32 t0 = tcg_temp_new_i32();
    TCGv_i32 t1 = tcg_temp_new_i32();
    TCGv_i32 t2 = tcg_temp_new_i32();
    TCGv_i32 t3 = tcg_temp_new_i32();

    tcg_gen_trunc_tl_i32(t0, arg1);
    tcg_gen_trunc_tl_i32(t1, arg2);
    if (sign) {
        tcg_gen_setcondi_i32(TCG_COND_EQ, t2, t0, INT_MIN);
        tcg_gen_setcondi_i32(TCG_COND_EQ, t3, t1, -1);
        tcg_gen_and_i32(t2, t2, t3);
        tcg_gen_setcondi_i32(TCG_COND_EQ, t3, t1, 0);
        tcg_gen_or_i32(t2, t2, t3);
        tcg_gen_movi_i32(t3, 0);
        tcg_gen_movcond_i32(TCG_COND_NE, t1, t2, t3, t2, t1);
        tcg_gen_div_i32(t3, t0, t1);
        tcg_gen_extu_i32_tl(ret, t3);
    } else {
        tcg_gen_setcondi_i32(TCG_COND_EQ, t2, t1, 0);
        tcg_gen_movi_i32(t3, 0);
        tcg_gen_movcond_i32(TCG_COND_NE, t1, t2, t3, t2, t1);
        tcg_gen_divu_i32(t3, t0, t1);
        tcg_gen_extu_i32_tl(ret, t3);
    }
    if (compute_ov) {
        tcg_gen_extu_i32_tl(cpu_ov, t2);
        if (is_isa300(ctx)) {
            tcg_gen_extu_i32_tl(cpu_ov32, t2);
        }
        tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov);
    }
    tcg_temp_free_i32(t0);
    tcg_temp_free_i32(t1);
    tcg_temp_free_i32(t2);
    tcg_temp_free_i32(t3);

    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, ret);
}
/* Div functions */
#define GEN_INT_ARITH_DIVW(name, opc3, sign, compute_ov)                      \
static void glue(gen_, name)(DisasContext *ctx)                                       \
{                                                                             \
    gen_op_arith_divw(ctx, cpu_gpr[rD(ctx->opcode)],                          \
                     cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],      \
                     sign, compute_ov);                                       \
}
/* divwu  divwu.  divwuo  divwuo.   */
GEN_INT_ARITH_DIVW(divwu, 0x0E, 0, 0);
GEN_INT_ARITH_DIVW(divwuo, 0x1E, 0, 1);
/* divw  divw.  divwo  divwo.   */
GEN_INT_ARITH_DIVW(divw, 0x0F, 1, 0);
GEN_INT_ARITH_DIVW(divwo, 0x1F, 1, 1);

/* div[wd]eu[o][.] */
#define GEN_DIVE(name, hlpr, compute_ov)                                      \
static void gen_##name(DisasContext *ctx)                                     \
{                                                                             \
    TCGv_i32 t0 = tcg_const_i32(compute_ov);                                  \
    gen_helper_##hlpr(cpu_gpr[rD(ctx->opcode)], cpu_env,                      \
                     cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], t0); \
    tcg_temp_free_i32(t0);                                                    \
    if (unlikely(Rc(ctx->opcode) != 0)) {                                     \
        gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);                           \
    }                                                                         \
}

GEN_DIVE(divweu, divweu, 0);
GEN_DIVE(divweuo, divweu, 1);
GEN_DIVE(divwe, divwe, 0);
GEN_DIVE(divweo, divwe, 1);

#if defined(TARGET_PPC64)
static inline void gen_op_arith_divd(DisasContext *ctx, TCGv ret, TCGv arg1,
                                     TCGv arg2, int sign, int compute_ov)
{
    TCGv_i64 t0 = tcg_temp_new_i64();
    TCGv_i64 t1 = tcg_temp_new_i64();
    TCGv_i64 t2 = tcg_temp_new_i64();
    TCGv_i64 t3 = tcg_temp_new_i64();

    tcg_gen_mov_i64(t0, arg1);
    tcg_gen_mov_i64(t1, arg2);
    if (sign) {
        tcg_gen_setcondi_i64(TCG_COND_EQ, t2, t0, INT64_MIN);
        tcg_gen_setcondi_i64(TCG_COND_EQ, t3, t1, -1);
        tcg_gen_and_i64(t2, t2, t3);
        tcg_gen_setcondi_i64(TCG_COND_EQ, t3, t1, 0);
        tcg_gen_or_i64(t2, t2, t3);
        tcg_gen_movi_i64(t3, 0);
        tcg_gen_movcond_i64(TCG_COND_NE, t1, t2, t3, t2, t1);
        tcg_gen_div_i64(ret, t0, t1);
    } else {
        tcg_gen_setcondi_i64(TCG_COND_EQ, t2, t1, 0);
        tcg_gen_movi_i64(t3, 0);
        tcg_gen_movcond_i64(TCG_COND_NE, t1, t2, t3, t2, t1);
        tcg_gen_divu_i64(ret, t0, t1);
    }
    if (compute_ov) {
        tcg_gen_mov_tl(cpu_ov, t2);
        if (is_isa300(ctx)) {
            tcg_gen_mov_tl(cpu_ov32, t2);
        }
        tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov);
    }
    tcg_temp_free_i64(t0);
    tcg_temp_free_i64(t1);
    tcg_temp_free_i64(t2);
    tcg_temp_free_i64(t3);

    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, ret);
}

#define GEN_INT_ARITH_DIVD(name, opc3, sign, compute_ov)                      \
static void glue(gen_, name)(DisasContext *ctx)                                       \
{                                                                             \
    gen_op_arith_divd(ctx, cpu_gpr[rD(ctx->opcode)],                          \
                      cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],     \
                      sign, compute_ov);                                      \
}
/* divdu  divdu.  divduo  divduo.   */
GEN_INT_ARITH_DIVD(divdu, 0x0E, 0, 0);
GEN_INT_ARITH_DIVD(divduo, 0x1E, 0, 1);
/* divd  divd.  divdo  divdo.   */
GEN_INT_ARITH_DIVD(divd, 0x0F, 1, 0);
GEN_INT_ARITH_DIVD(divdo, 0x1F, 1, 1);

GEN_DIVE(divdeu, divdeu, 0);
GEN_DIVE(divdeuo, divdeu, 1);
GEN_DIVE(divde, divde, 0);
GEN_DIVE(divdeo, divde, 1);
#endif

static inline void gen_op_arith_modw(DisasContext *ctx, TCGv ret, TCGv arg1,
                                     TCGv arg2, int sign)
{
    TCGv_i32 t0 = tcg_temp_new_i32();
    TCGv_i32 t1 = tcg_temp_new_i32();

    tcg_gen_trunc_tl_i32(t0, arg1);
    tcg_gen_trunc_tl_i32(t1, arg2);
    if (sign) {
        TCGv_i32 t2 = tcg_temp_new_i32();
        TCGv_i32 t3 = tcg_temp_new_i32();
        tcg_gen_setcondi_i32(TCG_COND_EQ, t2, t0, INT_MIN);
        tcg_gen_setcondi_i32(TCG_COND_EQ, t3, t1, -1);
        tcg_gen_and_i32(t2, t2, t3);
        tcg_gen_setcondi_i32(TCG_COND_EQ, t3, t1, 0);
        tcg_gen_or_i32(t2, t2, t3);
        tcg_gen_movi_i32(t3, 0);
        tcg_gen_movcond_i32(TCG_COND_NE, t1, t2, t3, t2, t1);
        tcg_gen_rem_i32(t3, t0, t1);
        tcg_gen_ext_i32_tl(ret, t3);
        tcg_temp_free_i32(t2);
        tcg_temp_free_i32(t3);
    } else {
        TCGv_i32 t2 = tcg_const_i32(1);
        TCGv_i32 t3 = tcg_const_i32(0);
        tcg_gen_movcond_i32(TCG_COND_EQ, t1, t1, t3, t2, t1);
        tcg_gen_remu_i32(t3, t0, t1);
        tcg_gen_extu_i32_tl(ret, t3);
        tcg_temp_free_i32(t2);
        tcg_temp_free_i32(t3);
    }
    tcg_temp_free_i32(t0);
    tcg_temp_free_i32(t1);
}

#define GEN_INT_ARITH_MODW(name, opc3, sign)                                \
static void glue(gen_, name)(DisasContext *ctx)                             \
{                                                                           \
    gen_op_arith_modw(ctx, cpu_gpr[rD(ctx->opcode)],                        \
                      cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],   \
                      sign);                                                \
}

GEN_INT_ARITH_MODW(moduw, 0x08, 0);
GEN_INT_ARITH_MODW(modsw, 0x18, 1);

#if defined(TARGET_PPC64)
static inline void gen_op_arith_modd(DisasContext *ctx, TCGv ret, TCGv arg1,
                                     TCGv arg2, int sign)
{
    TCGv_i64 t0 = tcg_temp_new_i64();
    TCGv_i64 t1 = tcg_temp_new_i64();

    tcg_gen_mov_i64(t0, arg1);
    tcg_gen_mov_i64(t1, arg2);
    if (sign) {
        TCGv_i64 t2 = tcg_temp_new_i64();
        TCGv_i64 t3 = tcg_temp_new_i64();
        tcg_gen_setcondi_i64(TCG_COND_EQ, t2, t0, INT64_MIN);
        tcg_gen_setcondi_i64(TCG_COND_EQ, t3, t1, -1);
        tcg_gen_and_i64(t2, t2, t3);
        tcg_gen_setcondi_i64(TCG_COND_EQ, t3, t1, 0);
        tcg_gen_or_i64(t2, t2, t3);
        tcg_gen_movi_i64(t3, 0);
        tcg_gen_movcond_i64(TCG_COND_NE, t1, t2, t3, t2, t1);
        tcg_gen_rem_i64(ret, t0, t1);
        tcg_temp_free_i64(t2);
        tcg_temp_free_i64(t3);
    } else {
        TCGv_i64 t2 = tcg_const_i64(1);
        TCGv_i64 t3 = tcg_const_i64(0);
        tcg_gen_movcond_i64(TCG_COND_EQ, t1, t1, t3, t2, t1);
        tcg_gen_remu_i64(ret, t0, t1);
        tcg_temp_free_i64(t2);
        tcg_temp_free_i64(t3);
    }
    tcg_temp_free_i64(t0);
    tcg_temp_free_i64(t1);
}

#define GEN_INT_ARITH_MODD(name, opc3, sign)                            \
static void glue(gen_, name)(DisasContext *ctx)                           \
{                                                                         \
  gen_op_arith_modd(ctx, cpu_gpr[rD(ctx->opcode)],                        \
                    cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],   \
                    sign);                                                \
}

GEN_INT_ARITH_MODD(modud, 0x08, 0);
GEN_INT_ARITH_MODD(modsd, 0x18, 1);
#endif

/* mulhw  mulhw. */
static void gen_mulhw(DisasContext *ctx)
{
    TCGv_i32 t0 = tcg_temp_new_i32();
    TCGv_i32 t1 = tcg_temp_new_i32();

    tcg_gen_trunc_tl_i32(t0, cpu_gpr[rA(ctx->opcode)]);
    tcg_gen_trunc_tl_i32(t1, cpu_gpr[rB(ctx->opcode)]);
    tcg_gen_muls2_i32(t0, t1, t0, t1);
    tcg_gen_extu_i32_tl(cpu_gpr[rD(ctx->opcode)], t1);
    tcg_temp_free_i32(t0);
    tcg_temp_free_i32(t1);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}

/* mulhwu  mulhwu.  */
static void gen_mulhwu(DisasContext *ctx)
{
    TCGv_i32 t0 = tcg_temp_new_i32();
    TCGv_i32 t1 = tcg_temp_new_i32();

    tcg_gen_trunc_tl_i32(t0, cpu_gpr[rA(ctx->opcode)]);
    tcg_gen_trunc_tl_i32(t1, cpu_gpr[rB(ctx->opcode)]);
    tcg_gen_mulu2_i32(t0, t1, t0, t1);
    tcg_gen_extu_i32_tl(cpu_gpr[rD(ctx->opcode)], t1);
    tcg_temp_free_i32(t0);
    tcg_temp_free_i32(t1);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}

/* mullw  mullw. */
static void gen_mullw(DisasContext *ctx)
{
#if defined(TARGET_PPC64)
    TCGv_i64 t0, t1;
    t0 = tcg_temp_new_i64();
    t1 = tcg_temp_new_i64();
    tcg_gen_ext32s_tl(t0, cpu_gpr[rA(ctx->opcode)]);
    tcg_gen_ext32s_tl(t1, cpu_gpr[rB(ctx->opcode)]);
    tcg_gen_mul_i64(cpu_gpr[rD(ctx->opcode)], t0, t1);
    tcg_temp_free(t0);
    tcg_temp_free(t1);
#else
    tcg_gen_mul_i32(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
                    cpu_gpr[rB(ctx->opcode)]);
#endif
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}

/* mullwo  mullwo. */
static void gen_mullwo(DisasContext *ctx)
{
    TCGv_i32 t0 = tcg_temp_new_i32();
    TCGv_i32 t1 = tcg_temp_new_i32();

    tcg_gen_trunc_tl_i32(t0, cpu_gpr[rA(ctx->opcode)]);
    tcg_gen_trunc_tl_i32(t1, cpu_gpr[rB(ctx->opcode)]);
    tcg_gen_muls2_i32(t0, t1, t0, t1);
#if defined(TARGET_PPC64)
    tcg_gen_concat_i32_i64(cpu_gpr[rD(ctx->opcode)], t0, t1);
#else
    tcg_gen_mov_i32(cpu_gpr[rD(ctx->opcode)], t0);
#endif

    tcg_gen_sari_i32(t0, t0, 31);
    tcg_gen_setcond_i32(TCG_COND_NE, t0, t0, t1);
    tcg_gen_extu_i32_tl(cpu_ov, t0);
    if (is_isa300(ctx)) {
        tcg_gen_mov_tl(cpu_ov32, cpu_ov);
    }
    tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov);

    tcg_temp_free_i32(t0);
    tcg_temp_free_i32(t1);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}

/* mulli */
static void gen_mulli(DisasContext *ctx)
{
    tcg_gen_muli_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
                    SIMM(ctx->opcode));
}

#if defined(TARGET_PPC64)
/* mulhd  mulhd. */
static void gen_mulhd(DisasContext *ctx)
{
    TCGv lo = tcg_temp_new();
    tcg_gen_muls2_tl(lo, cpu_gpr[rD(ctx->opcode)],
                     cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
    tcg_temp_free(lo);
    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
    }
}

/* mulhdu  mulhdu. */
static void gen_mulhdu(DisasContext *ctx)
{
    TCGv lo = tcg_temp_new();
    tcg_gen_mulu2_tl(lo, cpu_gpr[rD(ctx->opcode)],
                     cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
    tcg_temp_free(lo);
    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
    }
}

/* mulld  mulld. */
static void gen_mulld(DisasContext *ctx)
{
    tcg_gen_mul_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
                   cpu_gpr[rB(ctx->opcode)]);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}

/* mulldo  mulldo. */
static void gen_mulldo(DisasContext *ctx)
{
    TCGv_i64 t0 = tcg_temp_new_i64();
    TCGv_i64 t1 = tcg_temp_new_i64();

    tcg_gen_muls2_i64(t0, t1, cpu_gpr[rA(ctx->opcode)],
                      cpu_gpr[rB(ctx->opcode)]);
    tcg_gen_mov_i64(cpu_gpr[rD(ctx->opcode)], t0);

    tcg_gen_sari_i64(t0, t0, 63);
    tcg_gen_setcond_i64(TCG_COND_NE, cpu_ov, t0, t1);
    if (is_isa300(ctx)) {
        tcg_gen_mov_tl(cpu_ov32, cpu_ov);
    }
    tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov);

    tcg_temp_free_i64(t0);
    tcg_temp_free_i64(t1);

    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
    }
}
#endif

/* Common subf function */
static inline void gen_op_arith_subf(DisasContext *ctx, TCGv ret, TCGv arg1,
                                     TCGv arg2, bool add_ca, bool compute_ca,
                                     bool compute_ov, bool compute_rc0)
{
    TCGv t0 = ret;

    if (compute_ca || compute_ov) {
        t0 = tcg_temp_new();
    }

    if (compute_ca) {
        /* dest = ~arg1 + arg2 [+ ca].  */
        if (NARROW_MODE(ctx)) {
            /* Caution: a non-obvious corner case of the spec is that we
               must produce the *entire* 64-bit addition, but produce the
               carry into bit 32.  */
            TCGv inv1 = tcg_temp_new();
            TCGv t1 = tcg_temp_new();
            tcg_gen_not_tl(inv1, arg1);
            if (add_ca) {
                tcg_gen_add_tl(t0, arg2, cpu_ca);
            } else {
                tcg_gen_addi_tl(t0, arg2, 1);
            }
            tcg_gen_xor_tl(t1, arg2, inv1);         /* add without carry */
            tcg_gen_add_tl(t0, t0, inv1);
            tcg_temp_free(inv1);
            tcg_gen_xor_tl(cpu_ca, t0, t1);         /* bits changes w/ carry */
            tcg_temp_free(t1);
            tcg_gen_extract_tl(cpu_ca, cpu_ca, 32, 1);
            if (is_isa300(ctx)) {
                tcg_gen_mov_tl(cpu_ca32, cpu_ca);
            }
        } else if (add_ca) {
            TCGv zero, inv1 = tcg_temp_new();
            tcg_gen_not_tl(inv1, arg1);
            zero = tcg_const_tl(0);
            tcg_gen_add2_tl(t0, cpu_ca, arg2, zero, cpu_ca, zero);
            tcg_gen_add2_tl(t0, cpu_ca, t0, cpu_ca, inv1, zero);
            gen_op_arith_compute_ca32(ctx, t0, inv1, arg2, 0);
            tcg_temp_free(zero);
            tcg_temp_free(inv1);
        } else {
            tcg_gen_setcond_tl(TCG_COND_GEU, cpu_ca, arg2, arg1);
            tcg_gen_sub_tl(t0, arg2, arg1);
            gen_op_arith_compute_ca32(ctx, t0, arg1, arg2, 1);
        }
    } else if (add_ca) {
        /* Since we're ignoring carry-out, we can simplify the
           standard ~arg1 + arg2 + ca to arg2 - arg1 + ca - 1.  */
        tcg_gen_sub_tl(t0, arg2, arg1);
        tcg_gen_add_tl(t0, t0, cpu_ca);
        tcg_gen_subi_tl(t0, t0, 1);
    } else {
        tcg_gen_sub_tl(t0, arg2, arg1);
    }

    if (compute_ov) {
        gen_op_arith_compute_ov(ctx, t0, arg1, arg2, 1);
    }
    if (unlikely(compute_rc0)) {
        gen_set_Rc0(ctx, t0);
    }

    if (!TCGV_EQUAL(t0, ret)) {
        tcg_gen_mov_tl(ret, t0);
        tcg_temp_free(t0);
    }
}
/* Sub functions with Two operands functions */
#define GEN_INT_ARITH_SUBF(name, opc3, add_ca, compute_ca, compute_ov)        \
static void glue(gen_, name)(DisasContext *ctx)                               \
{                                                                             \
    gen_op_arith_subf(ctx, cpu_gpr[rD(ctx->opcode)],                          \
                      cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],     \
                      add_ca, compute_ca, compute_ov, Rc(ctx->opcode));       \
}
/* Sub functions with one operand and one immediate */
#define GEN_INT_ARITH_SUBF_CONST(name, opc3, const_val,                       \
                                add_ca, compute_ca, compute_ov)               \
static void glue(gen_, name)(DisasContext *ctx)                               \
{                                                                             \
    TCGv t0 = tcg_const_tl(const_val);                                        \
    gen_op_arith_subf(ctx, cpu_gpr[rD(ctx->opcode)],                          \
                      cpu_gpr[rA(ctx->opcode)], t0,                           \
                      add_ca, compute_ca, compute_ov, Rc(ctx->opcode));       \
    tcg_temp_free(t0);                                                        \
}
/* subf  subf.  subfo  subfo. */
GEN_INT_ARITH_SUBF(subf, 0x01, 0, 0, 0)
GEN_INT_ARITH_SUBF(subfo, 0x11, 0, 0, 1)
/* subfc  subfc.  subfco  subfco. */
GEN_INT_ARITH_SUBF(subfc, 0x00, 0, 1, 0)
GEN_INT_ARITH_SUBF(subfco, 0x10, 0, 1, 1)
/* subfe  subfe.  subfeo  subfo. */
GEN_INT_ARITH_SUBF(subfe, 0x04, 1, 1, 0)
GEN_INT_ARITH_SUBF(subfeo, 0x14, 1, 1, 1)
/* subfme  subfme.  subfmeo  subfmeo.  */
GEN_INT_ARITH_SUBF_CONST(subfme, 0x07, -1LL, 1, 1, 0)
GEN_INT_ARITH_SUBF_CONST(subfmeo, 0x17, -1LL, 1, 1, 1)
/* subfze  subfze.  subfzeo  subfzeo.*/
GEN_INT_ARITH_SUBF_CONST(subfze, 0x06, 0, 1, 1, 0)
GEN_INT_ARITH_SUBF_CONST(subfzeo, 0x16, 0, 1, 1, 1)

/* subfic */
static void gen_subfic(DisasContext *ctx)
{
    TCGv c = tcg_const_tl(SIMM(ctx->opcode));
    gen_op_arith_subf(ctx, cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
                      c, 0, 1, 0, 0);
    tcg_temp_free(c);
}

/* neg neg. nego nego. */
static inline void gen_op_arith_neg(DisasContext *ctx, bool compute_ov)
{
    TCGv zero = tcg_const_tl(0);
    gen_op_arith_subf(ctx, cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
                      zero, 0, 0, compute_ov, Rc(ctx->opcode));
    tcg_temp_free(zero);
}

static void gen_neg(DisasContext *ctx)
{
    tcg_gen_neg_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)]);
    if (unlikely(Rc(ctx->opcode))) {
        gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
    }
}

static void gen_nego(DisasContext *ctx)
{
    gen_op_arith_neg(ctx, 1);
}

/***                            Integer logical                            ***/
#define GEN_LOGICAL2(name, tcg_op, opc, type)                                 \
static void glue(gen_, name)(DisasContext *ctx)                                       \
{                                                                             \
    tcg_op(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)],                \
       cpu_gpr[rB(ctx->opcode)]);                                             \
    if (unlikely(Rc(ctx->opcode) != 0))                                       \
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);                           \
}

#define GEN_LOGICAL1(name, tcg_op, opc, type)                                 \
static void glue(gen_, name)(DisasContext *ctx)                                       \
{                                                                             \
    tcg_op(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);               \
    if (unlikely(Rc(ctx->opcode) != 0))                                       \
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);                           \
}

/* and & and. */
GEN_LOGICAL2(and, tcg_gen_and_tl, 0x00, PPC_INTEGER);
/* andc & andc. */
GEN_LOGICAL2(andc, tcg_gen_andc_tl, 0x01, PPC_INTEGER);

/* andi. */
static void gen_andi_(DisasContext *ctx)
{
    tcg_gen_andi_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], UIMM(ctx->opcode));
    gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}

/* andis. */
static void gen_andis_(DisasContext *ctx)
{
    tcg_gen_andi_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], UIMM(ctx->opcode) << 16);
    gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}

/* cntlzw */
static void gen_cntlzw(DisasContext *ctx)
{
    TCGv_i32 t = tcg_temp_new_i32();

    tcg_gen_trunc_tl_i32(t, cpu_gpr[rS(ctx->opcode)]);
    tcg_gen_clzi_i32(t, t, 32);
    tcg_gen_extu_i32_tl(cpu_gpr[rA(ctx->opcode)], t);
    tcg_temp_free_i32(t);

    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}

/* cnttzw */
static void gen_cnttzw(DisasContext *ctx)
{
    TCGv_i32 t = tcg_temp_new_i32();

    tcg_gen_trunc_tl_i32(t, cpu_gpr[rS(ctx->opcode)]);
    tcg_gen_ctzi_i32(t, t, 32);
    tcg_gen_extu_i32_tl(cpu_gpr[rA(ctx->opcode)], t);
    tcg_temp_free_i32(t);

    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
    }
}

/* eqv & eqv. */
GEN_LOGICAL2(eqv, tcg_gen_eqv_tl, 0x08, PPC_INTEGER);
/* extsb & extsb. */
GEN_LOGICAL1(extsb, tcg_gen_ext8s_tl, 0x1D, PPC_INTEGER);
/* extsh & extsh. */
GEN_LOGICAL1(extsh, tcg_gen_ext16s_tl, 0x1C, PPC_INTEGER);
/* nand & nand. */
GEN_LOGICAL2(nand, tcg_gen_nand_tl, 0x0E, PPC_INTEGER);
/* nor & nor. */
GEN_LOGICAL2(nor, tcg_gen_nor_tl, 0x03, PPC_INTEGER);

#if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY)
static void gen_pause(DisasContext *ctx)
{
    TCGv_i32 t0 = tcg_const_i32(0);
    tcg_gen_st_i32(t0, cpu_env,
                   -offsetof(PowerPCCPU, env) + offsetof(CPUState, halted));
    tcg_temp_free_i32(t0);

    /* Stop translation, this gives other CPUs a chance to run */
    gen_exception_nip(ctx, EXCP_HLT, ctx->nip);
}
#endif /* defined(TARGET_PPC64) */

/* or & or. */
static void gen_or(DisasContext *ctx)
{
    int rs, ra, rb;

    rs = rS(ctx->opcode);
    ra = rA(ctx->opcode);
    rb = rB(ctx->opcode);
    /* Optimisation for mr. ri case */
    if (rs != ra || rs != rb) {
        if (rs != rb)
            tcg_gen_or_tl(cpu_gpr[ra], cpu_gpr[rs], cpu_gpr[rb]);
        else
            tcg_gen_mov_tl(cpu_gpr[ra], cpu_gpr[rs]);
        if (unlikely(Rc(ctx->opcode) != 0))
            gen_set_Rc0(ctx, cpu_gpr[ra]);
    } else if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, cpu_gpr[rs]);
#if defined(TARGET_PPC64)
    } else if (rs != 0) { /* 0 is nop */
        int prio = 0;

        switch (rs) {
        case 1:
            /* Set process priority to low */
            prio = 2;
            break;
        case 6:
            /* Set process priority to medium-low */
            prio = 3;
            break;
        case 2:
            /* Set process priority to normal */
            prio = 4;
            break;
#if !defined(CONFIG_USER_ONLY)
        case 31:
            if (!ctx->pr) {
                /* Set process priority to very low */
                prio = 1;
            }
            break;
        case 5:
            if (!ctx->pr) {
                /* Set process priority to medium-hight */
                prio = 5;
            }
            break;
        case 3:
            if (!ctx->pr) {
                /* Set process priority to high */
                prio = 6;
            }
            break;
        case 7:
            if (ctx->hv && !ctx->pr) {
                /* Set process priority to very high */
                prio = 7;
            }
            break;
#endif
        default:
            break;
        }
        if (prio) {
            TCGv t0 = tcg_temp_new();
            gen_load_spr(t0, SPR_PPR);
            tcg_gen_andi_tl(t0, t0, ~0x001C000000000000ULL);
            tcg_gen_ori_tl(t0, t0, ((uint64_t)prio) << 50);
            gen_store_spr(SPR_PPR, t0);
            tcg_temp_free(t0);
        }
#if !defined(CONFIG_USER_ONLY)
        /* Pause out of TCG otherwise spin loops with smt_low eat too much
         * CPU and the kernel hangs.  This applies to all encodings other
         * than no-op, e.g., miso(rs=26), yield(27), mdoio(29), mdoom(30),
         * and all currently undefined.
         */
        gen_pause(ctx);
#endif
#endif
    }
}
/* orc & orc. */
GEN_LOGICAL2(orc, tcg_gen_orc_tl, 0x0C, PPC_INTEGER);

/* xor & xor. */
static void gen_xor(DisasContext *ctx)
{
    /* Optimisation for "set to zero" case */
    if (rS(ctx->opcode) != rB(ctx->opcode))
        tcg_gen_xor_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
    else
        tcg_gen_movi_tl(cpu_gpr[rA(ctx->opcode)], 0);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}

/* ori */
static void gen_ori(DisasContext *ctx)
{
    target_ulong uimm = UIMM(ctx->opcode);

    if (rS(ctx->opcode) == rA(ctx->opcode) && uimm == 0) {
        return;
    }
    tcg_gen_ori_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], uimm);
}

/* oris */
static void gen_oris(DisasContext *ctx)
{
    target_ulong uimm = UIMM(ctx->opcode);

    if (rS(ctx->opcode) == rA(ctx->opcode) && uimm == 0) {
        /* NOP */
        return;
    }
    tcg_gen_ori_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], uimm << 16);
}

/* xori */
static void gen_xori(DisasContext *ctx)
{
    target_ulong uimm = UIMM(ctx->opcode);

    if (rS(ctx->opcode) == rA(ctx->opcode) && uimm == 0) {
        /* NOP */
        return;
    }
    tcg_gen_xori_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], uimm);
}

/* xoris */
static void gen_xoris(DisasContext *ctx)
{
    target_ulong uimm = UIMM(ctx->opcode);

    if (rS(ctx->opcode) == rA(ctx->opcode) && uimm == 0) {
        /* NOP */
        return;
    }
    tcg_gen_xori_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], uimm << 16);
}

/* popcntb : PowerPC 2.03 specification */
static void gen_popcntb(DisasContext *ctx)
{
    gen_helper_popcntb(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
}

static void gen_popcntw(DisasContext *ctx)
{
#if defined(TARGET_PPC64)
    gen_helper_popcntw(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
#else
    tcg_gen_ctpop_i32(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
#endif
}

#if defined(TARGET_PPC64)
/* popcntd: PowerPC 2.06 specification */
static void gen_popcntd(DisasContext *ctx)
{
    tcg_gen_ctpop_i64(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
}
#endif

/* prtyw: PowerPC 2.05 specification */
static void gen_prtyw(DisasContext *ctx)
{
    TCGv ra = cpu_gpr[rA(ctx->opcode)];
    TCGv rs = cpu_gpr[rS(ctx->opcode)];
    TCGv t0 = tcg_temp_new();
    tcg_gen_shri_tl(t0, rs, 16);
    tcg_gen_xor_tl(ra, rs, t0);
    tcg_gen_shri_tl(t0, ra, 8);
    tcg_gen_xor_tl(ra, ra, t0);
    tcg_gen_andi_tl(ra, ra, (target_ulong)0x100000001ULL);
    tcg_temp_free(t0);
}

#if defined(TARGET_PPC64)
/* prtyd: PowerPC 2.05 specification */
static void gen_prtyd(DisasContext *ctx)
{
    TCGv ra = cpu_gpr[rA(ctx->opcode)];
    TCGv rs = cpu_gpr[rS(ctx->opcode)];
    TCGv t0 = tcg_temp_new();
    tcg_gen_shri_tl(t0, rs, 32);
    tcg_gen_xor_tl(ra, rs, t0);
    tcg_gen_shri_tl(t0, ra, 16);
    tcg_gen_xor_tl(ra, ra, t0);
    tcg_gen_shri_tl(t0, ra, 8);
    tcg_gen_xor_tl(ra, ra, t0);
    tcg_gen_andi_tl(ra, ra, 1);
    tcg_temp_free(t0);
}
#endif

#if defined(TARGET_PPC64)
/* bpermd */
static void gen_bpermd(DisasContext *ctx)
{
    gen_helper_bpermd(cpu_gpr[rA(ctx->opcode)],
                      cpu_gpr[rS(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
}
#endif

#if defined(TARGET_PPC64)
/* extsw & extsw. */
GEN_LOGICAL1(extsw, tcg_gen_ext32s_tl, 0x1E, PPC_64B);

/* cntlzd */
static void gen_cntlzd(DisasContext *ctx)
{
    tcg_gen_clzi_i64(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], 64);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}

/* cnttzd */
static void gen_cnttzd(DisasContext *ctx)
{
    tcg_gen_ctzi_i64(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], 64);
    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
    }
}

/* darn */
static void gen_darn(DisasContext *ctx)
{
    int l = L(ctx->opcode);

    if (l == 0) {
        gen_helper_darn32(cpu_gpr[rD(ctx->opcode)]);
    } else if (l <= 2) {
        /* Return 64-bit random for both CRN and RRN */
        gen_helper_darn64(cpu_gpr[rD(ctx->opcode)]);
    } else {
        tcg_gen_movi_i64(cpu_gpr[rD(ctx->opcode)], -1);
    }
}
#endif

/***                             Integer rotate                            ***/

/* rlwimi & rlwimi. */
static void gen_rlwimi(DisasContext *ctx)
{
    TCGv t_ra = cpu_gpr[rA(ctx->opcode)];
    TCGv t_rs = cpu_gpr[rS(ctx->opcode)];
    uint32_t sh = SH(ctx->opcode);
    uint32_t mb = MB(ctx->opcode);
    uint32_t me = ME(ctx->opcode);

    if (sh == (31-me) && mb <= me) {
        tcg_gen_deposit_tl(t_ra, t_ra, t_rs, sh, me - mb + 1);
    } else {
        target_ulong mask;
        TCGv t1;

#if defined(TARGET_PPC64)
        mb += 32;
        me += 32;
#endif
        mask = MASK(mb, me);

        t1 = tcg_temp_new();
        if (mask <= 0xffffffffu) {
            TCGv_i32 t0 = tcg_temp_new_i32();
            tcg_gen_trunc_tl_i32(t0, t_rs);
            tcg_gen_rotli_i32(t0, t0, sh);
            tcg_gen_extu_i32_tl(t1, t0);
            tcg_temp_free_i32(t0);
        } else {
#if defined(TARGET_PPC64)
            tcg_gen_deposit_i64(t1, t_rs, t_rs, 32, 32);
            tcg_gen_rotli_i64(t1, t1, sh);
#else
            g_assert_not_reached();
#endif
        }

        tcg_gen_andi_tl(t1, t1, mask);
        tcg_gen_andi_tl(t_ra, t_ra, ~mask);
        tcg_gen_or_tl(t_ra, t_ra, t1);
        tcg_temp_free(t1);
    }
    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, t_ra);
    }
}

/* rlwinm & rlwinm. */
static void gen_rlwinm(DisasContext *ctx)
{
    TCGv t_ra = cpu_gpr[rA(ctx->opcode)];
    TCGv t_rs = cpu_gpr[rS(ctx->opcode)];
    int sh = SH(ctx->opcode);
    int mb = MB(ctx->opcode);
    int me = ME(ctx->opcode);
    int len = me - mb + 1;
    int rsh = (32 - sh) & 31;

    if (sh != 0 && len > 0 && me == (31 - sh)) {
        tcg_gen_deposit_z_tl(t_ra, t_rs, sh, len);
    } else if (me == 31 && rsh + len <= 32) {
        tcg_gen_extract_tl(t_ra, t_rs, rsh, len);
    } else {
        target_ulong mask;
#if defined(TARGET_PPC64)
        mb += 32;
        me += 32;
#endif
        mask = MASK(mb, me);
        if (sh == 0) {
            tcg_gen_andi_tl(t_ra, t_rs, mask);
        } else if (mask <= 0xffffffffu) {
            TCGv_i32 t0 = tcg_temp_new_i32();
            tcg_gen_trunc_tl_i32(t0, t_rs);
            tcg_gen_rotli_i32(t0, t0, sh);
            tcg_gen_andi_i32(t0, t0, mask);
            tcg_gen_extu_i32_tl(t_ra, t0);
            tcg_temp_free_i32(t0);
        } else {
#if defined(TARGET_PPC64)
            tcg_gen_deposit_i64(t_ra, t_rs, t_rs, 32, 32);
            tcg_gen_rotli_i64(t_ra, t_ra, sh);
            tcg_gen_andi_i64(t_ra, t_ra, mask);
#else
            g_assert_not_reached();
#endif
        }
    }
    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, t_ra);
    }
}

/* rlwnm & rlwnm. */
static void gen_rlwnm(DisasContext *ctx)
{
    TCGv t_ra = cpu_gpr[rA(ctx->opcode)];
    TCGv t_rs = cpu_gpr[rS(ctx->opcode)];
    TCGv t_rb = cpu_gpr[rB(ctx->opcode)];
    uint32_t mb = MB(ctx->opcode);
    uint32_t me = ME(ctx->opcode);
    target_ulong mask;

#if defined(TARGET_PPC64)
    mb += 32;
    me += 32;
#endif
    mask = MASK(mb, me);

    if (mask <= 0xffffffffu) {
        TCGv_i32 t0 = tcg_temp_new_i32();
        TCGv_i32 t1 = tcg_temp_new_i32();
        tcg_gen_trunc_tl_i32(t0, t_rb);
        tcg_gen_trunc_tl_i32(t1, t_rs);
        tcg_gen_andi_i32(t0, t0, 0x1f);
        tcg_gen_rotl_i32(t1, t1, t0);
        tcg_gen_extu_i32_tl(t_ra, t1);
        tcg_temp_free_i32(t0);
        tcg_temp_free_i32(t1);
    } else {
#if defined(TARGET_PPC64)
        TCGv_i64 t0 = tcg_temp_new_i64();
        tcg_gen_andi_i64(t0, t_rb, 0x1f);
        tcg_gen_deposit_i64(t_ra, t_rs, t_rs, 32, 32);
        tcg_gen_rotl_i64(t_ra, t_ra, t0);
        tcg_temp_free_i64(t0);
#else
        g_assert_not_reached();
#endif
    }

    tcg_gen_andi_tl(t_ra, t_ra, mask);

    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, t_ra);
    }
}

#if defined(TARGET_PPC64)
#define GEN_PPC64_R2(name, opc1, opc2)                                        \
static void glue(gen_, name##0)(DisasContext *ctx)                            \
{                                                                             \
    gen_##name(ctx, 0);                                                       \
}                                                                             \
                                                                              \
static void glue(gen_, name##1)(DisasContext *ctx)                            \
{                                                                             \
    gen_##name(ctx, 1);                                                       \
}
#define GEN_PPC64_R4(name, opc1, opc2)                                        \
static void glue(gen_, name##0)(DisasContext *ctx)                            \

{                                                                             \
    gen_##name(ctx, 0, 0);                                                    \
}                                                                             \
                                                                              \
static void glue(gen_, name##1)(DisasContext *ctx)                            \
{                                                                             \
    gen_##name(ctx, 0, 1);                                                    \
}                                                                             \
                                                                              \
static void glue(gen_, name##2)(DisasContext *ctx)                            \
{                                                                             \
    gen_##name(ctx, 1, 0);                                                    \
}                                                                             \
                                                                              \
static void glue(gen_, name##3)(DisasContext *ctx)                            \
{                                                                             \
    gen_##name(ctx, 1, 1);                                                    \
}

static void gen_rldinm(DisasContext *ctx, int mb, int me, int sh)
{
    TCGv t_ra = cpu_gpr[rA(ctx->opcode)];
    TCGv t_rs = cpu_gpr[rS(ctx->opcode)];
    int len = me - mb + 1;
    int rsh = (64 - sh) & 63;

    if (sh != 0 && len > 0 && me == (63 - sh)) {
        tcg_gen_deposit_z_tl(t_ra, t_rs, sh, len);
    } else if (me == 63 && rsh + len <= 64) {
        tcg_gen_extract_tl(t_ra, t_rs, rsh, len);
    } else {
        tcg_gen_rotli_tl(t_ra, t_rs, sh);
        tcg_gen_andi_tl(t_ra, t_ra, MASK(mb, me));
    }
    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, t_ra);
    }
}

/* rldicl - rldicl. */
static inline void gen_rldicl(DisasContext *ctx, int mbn, int shn)
{
    uint32_t sh, mb;

    sh = SH(ctx->opcode) | (shn << 5);
    mb = MB(ctx->opcode) | (mbn << 5);
    gen_rldinm(ctx, mb, 63, sh);
}
GEN_PPC64_R4(rldicl, 0x1E, 0x00);

/* rldicr - rldicr. */
static inline void gen_rldicr(DisasContext *ctx, int men, int shn)
{
    uint32_t sh, me;

    sh = SH(ctx->opcode) | (shn << 5);
    me = MB(ctx->opcode) | (men << 5);
    gen_rldinm(ctx, 0, me, sh);
}
GEN_PPC64_R4(rldicr, 0x1E, 0x02);

/* rldic - rldic. */
static inline void gen_rldic(DisasContext *ctx, int mbn, int shn)
{
    uint32_t sh, mb;

    sh = SH(ctx->opcode) | (shn << 5);
    mb = MB(ctx->opcode) | (mbn << 5);
    gen_rldinm(ctx, mb, 63 - sh, sh);
}
GEN_PPC64_R4(rldic, 0x1E, 0x04);

static void gen_rldnm(DisasContext *ctx, int mb, int me)
{
    TCGv t_ra = cpu_gpr[rA(ctx->opcode)];
    TCGv t_rs = cpu_gpr[rS(ctx->opcode)];
    TCGv t_rb = cpu_gpr[rB(ctx->opcode)];
    TCGv t0;

    t0 = tcg_temp_new();
    tcg_gen_andi_tl(t0, t_rb, 0x3f);
    tcg_gen_rotl_tl(t_ra, t_rs, t0);
    tcg_temp_free(t0);

    tcg_gen_andi_tl(t_ra, t_ra, MASK(mb, me));
    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, t_ra);
    }
}

/* rldcl - rldcl. */
static inline void gen_rldcl(DisasContext *ctx, int mbn)
{
    uint32_t mb;

    mb = MB(ctx->opcode) | (mbn << 5);
    gen_rldnm(ctx, mb, 63);
}
GEN_PPC64_R2(rldcl, 0x1E, 0x08);

/* rldcr - rldcr. */
static inline void gen_rldcr(DisasContext *ctx, int men)
{
    uint32_t me;

    me = MB(ctx->opcode) | (men << 5);
    gen_rldnm(ctx, 0, me);
}
GEN_PPC64_R2(rldcr, 0x1E, 0x09);

/* rldimi - rldimi. */
static void gen_rldimi(DisasContext *ctx, int mbn, int shn)
{
    TCGv t_ra = cpu_gpr[rA(ctx->opcode)];
    TCGv t_rs = cpu_gpr[rS(ctx->opcode)];
    uint32_t sh = SH(ctx->opcode) | (shn << 5);
    uint32_t mb = MB(ctx->opcode) | (mbn << 5);
    uint32_t me = 63 - sh;

    if (mb <= me) {
        tcg_gen_deposit_tl(t_ra, t_ra, t_rs, sh, me - mb + 1);
    } else {
        target_ulong mask = MASK(mb, me);
        TCGv t1 = tcg_temp_new();

        tcg_gen_rotli_tl(t1, t_rs, sh);
        tcg_gen_andi_tl(t1, t1, mask);
        tcg_gen_andi_tl(t_ra, t_ra, ~mask);
        tcg_gen_or_tl(t_ra, t_ra, t1);
        tcg_temp_free(t1);
    }
    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, t_ra);
    }
}
GEN_PPC64_R4(rldimi, 0x1E, 0x06);
#endif

/***                             Integer shift                             ***/

/* slw & slw. */
static void gen_slw(DisasContext *ctx)
{
    TCGv t0, t1;

    t0 = tcg_temp_new();
    /* AND rS with a mask that is 0 when rB >= 0x20 */
#if defined(TARGET_PPC64)
    tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x3a);
    tcg_gen_sari_tl(t0, t0, 0x3f);
#else
    tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x1a);
    tcg_gen_sari_tl(t0, t0, 0x1f);
#endif
    tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0);
    t1 = tcg_temp_new();
    tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x1f);
    tcg_gen_shl_tl(cpu_gpr[rA(ctx->opcode)], t0, t1);
    tcg_temp_free(t1);
    tcg_temp_free(t0);
    tcg_gen_ext32u_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rA(ctx->opcode)]);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}

/* sraw & sraw. */
static void gen_sraw(DisasContext *ctx)
{
    gen_helper_sraw(cpu_gpr[rA(ctx->opcode)], cpu_env,
                    cpu_gpr[rS(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}

/* srawi & srawi. */
static void gen_srawi(DisasContext *ctx)
{
    int sh = SH(ctx->opcode);
    TCGv dst = cpu_gpr[rA(ctx->opcode)];
    TCGv src = cpu_gpr[rS(ctx->opcode)];
    if (sh == 0) {
        tcg_gen_ext32s_tl(dst, src);
        tcg_gen_movi_tl(cpu_ca, 0);
    } else {
        TCGv t0;
        tcg_gen_ext32s_tl(dst, src);
        tcg_gen_andi_tl(cpu_ca, dst, (1ULL << sh) - 1);
        t0 = tcg_temp_new();
        tcg_gen_sari_tl(t0, dst, TARGET_LONG_BITS - 1);
        tcg_gen_and_tl(cpu_ca, cpu_ca, t0);
        tcg_temp_free(t0);
        tcg_gen_setcondi_tl(TCG_COND_NE, cpu_ca, cpu_ca, 0);
        tcg_gen_sari_tl(dst, dst, sh);
    }
    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, dst);
    }
}

/* srw & srw. */
static void gen_srw(DisasContext *ctx)
{
    TCGv t0, t1;

    t0 = tcg_temp_new();
    /* AND rS with a mask that is 0 when rB >= 0x20 */
#if defined(TARGET_PPC64)
    tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x3a);
    tcg_gen_sari_tl(t0, t0, 0x3f);
#else
    tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x1a);
    tcg_gen_sari_tl(t0, t0, 0x1f);
#endif
    tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0);
    tcg_gen_ext32u_tl(t0, t0);
    t1 = tcg_temp_new();
    tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x1f);
    tcg_gen_shr_tl(cpu_gpr[rA(ctx->opcode)], t0, t1);
    tcg_temp_free(t1);
    tcg_temp_free(t0);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}

#if defined(TARGET_PPC64)
/* sld & sld. */
static void gen_sld(DisasContext *ctx)
{
    TCGv t0, t1;

    t0 = tcg_temp_new();
    /* AND rS with a mask that is 0 when rB >= 0x40 */
    tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x39);
    tcg_gen_sari_tl(t0, t0, 0x3f);
    tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0);
    t1 = tcg_temp_new();
    tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x3f);
    tcg_gen_shl_tl(cpu_gpr[rA(ctx->opcode)], t0, t1);
    tcg_temp_free(t1);
    tcg_temp_free(t0);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}

/* srad & srad. */
static void gen_srad(DisasContext *ctx)
{
    gen_helper_srad(cpu_gpr[rA(ctx->opcode)], cpu_env,
                    cpu_gpr[rS(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* sradi & sradi. */
static inline void gen_sradi(DisasContext *ctx, int n)
{
    int sh = SH(ctx->opcode) + (n << 5);
    TCGv dst = cpu_gpr[rA(ctx->opcode)];
    TCGv src = cpu_gpr[rS(ctx->opcode)];
    if (sh == 0) {
        tcg_gen_mov_tl(dst, src);
        tcg_gen_movi_tl(cpu_ca, 0);
    } else {
        TCGv t0;
        tcg_gen_andi_tl(cpu_ca, src, (1ULL << sh) - 1);
        t0 = tcg_temp_new();
        tcg_gen_sari_tl(t0, src, TARGET_LONG_BITS - 1);
        tcg_gen_and_tl(cpu_ca, cpu_ca, t0);
        tcg_temp_free(t0);
        tcg_gen_setcondi_tl(TCG_COND_NE, cpu_ca, cpu_ca, 0);
        tcg_gen_sari_tl(dst, src, sh);
    }
    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, dst);
    }
}

static void gen_sradi0(DisasContext *ctx)
{
    gen_sradi(ctx, 0);
}

static void gen_sradi1(DisasContext *ctx)
{
    gen_sradi(ctx, 1);
}

/* extswsli & extswsli. */
static inline void gen_extswsli(DisasContext *ctx, int n)
{
    int sh = SH(ctx->opcode) + (n << 5);
    TCGv dst = cpu_gpr[rA(ctx->opcode)];
    TCGv src = cpu_gpr[rS(ctx->opcode)];

    tcg_gen_ext32s_tl(dst, src);
    tcg_gen_shli_tl(dst, dst, sh);
    if (unlikely(Rc(ctx->opcode) != 0)) {
        gen_set_Rc0(ctx, dst);
    }
}

static void gen_extswsli0(DisasContext *ctx)
{
    gen_extswsli(ctx, 0);
}

static void gen_extswsli1(DisasContext *ctx)
{
    gen_extswsli(ctx, 1);
}

/* srd & srd. */
static void gen_srd(DisasContext *ctx)
{
    TCGv t0, t1;

    t0 = tcg_temp_new();
    /* AND rS with a mask that is 0 when rB >= 0x40 */
    tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x39);
    tcg_gen_sari_tl(t0, t0, 0x3f);
    tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0);
    t1 = tcg_temp_new();
    tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x3f);
    tcg_gen_shr_tl(cpu_gpr[rA(ctx->opcode)], t0, t1);
    tcg_temp_free(t1);
    tcg_temp_free(t0);
    if (unlikely(Rc(ctx->opcode) != 0))
        gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
#endif

/***                           Addressing modes                            ***/
/* Register indirect with immediate index : EA = (rA|0) + SIMM */
static inline void gen_addr_imm_index(DisasContext *ctx, TCGv EA,
                                      target_long maskl)
{
    target_long simm = SIMM(ctx->opcode);

    simm &= ~maskl;
    if (rA(ctx->opcode) == 0) {
        if (NARROW_MODE(ctx)) {
            simm = (uint32_t)simm;
        }
        tcg_gen_movi_tl(EA, simm);
    } else if (likely(simm != 0)) {
        tcg_gen_addi_tl(EA, cpu_gpr[rA(ctx->opcode)], simm);
        if (NARROW_MODE(ctx)) {
            tcg_gen_ext32u_tl(EA, EA);
        }
    } else {
        if (NARROW_MODE(ctx)) {
            tcg_gen_ext32u_tl(EA, cpu_gpr[rA(ctx->opcode)]);
        } else {
            tcg_gen_mov_tl(EA, cpu_gpr[rA(ctx->opcode)]);
        }
    }
}

static inline void gen_addr_reg_index(DisasContext *ctx, TCGv EA)
{
    if (rA(ctx->opcode) == 0) {
        if (NARROW_MODE(ctx)) {
            tcg_gen_ext32u_tl(EA, cpu_gpr[rB(ctx->opcode)]);
        } else {
            tcg_gen_mov_tl(EA, cpu_gpr[rB(ctx->opcode)]);
        }
    } else {
        tcg_gen_add_tl(EA, cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
        if (NARROW_MODE(ctx)) {
            tcg_gen_ext32u_tl(EA, EA);
        }
    }
}

static inline void gen_addr_register(DisasContext *ctx, TCGv EA)
{
    if (rA(ctx->opcode) == 0) {
        tcg_gen_movi_tl(EA, 0);
    } else if (NARROW_MODE(ctx)) {
        tcg_gen_ext32u_tl(EA, cpu_gpr[rA(ctx->opcode)]);
    } else {
        tcg_gen_mov_tl(EA, cpu_gpr[rA(ctx->opcode)]);
    }
}

static inline void gen_addr_add(DisasContext *ctx, TCGv ret, TCGv arg1,
                                target_long val)
{
    tcg_gen_addi_tl(ret, arg1, val);
    if (NARROW_MODE(ctx)) {
        tcg_gen_ext32u_tl(ret, ret);
    }
}

static inline void gen_check_align(DisasContext *ctx, TCGv EA, int mask)
{
    TCGLabel *l1 = gen_new_label();
    TCGv t0 = tcg_temp_new();
    TCGv_i32 t1, t2;
    tcg_gen_andi_tl(t0, EA, mask);
    tcg_gen_brcondi_tl(TCG_COND_EQ, t0, 0, l1);
    t1 = tcg_const_i32(POWERPC_EXCP_ALIGN);
    t2 = tcg_const_i32(ctx->opcode & 0x03FF0000);
    gen_update_nip(ctx, ctx->nip - 4);
    gen_helper_raise_exception_err(cpu_env, t1, t2);
    tcg_temp_free_i32(t1);
    tcg_temp_free_i32(t2);
    gen_set_label(l1);
    tcg_temp_free(t0);
}

static inline void gen_align_no_le(DisasContext *ctx)
{
    gen_exception_err(ctx, POWERPC_EXCP_ALIGN,
                      (ctx->opcode & 0x03FF0000) | POWERPC_EXCP_ALIGN_LE);
}

/***                             Integer load                              ***/
#define DEF_MEMOP(op) ((op) | ctx->default_tcg_memop_mask)
#define BSWAP_MEMOP(op) ((op) | (ctx->default_tcg_memop_mask ^ MO_BSWAP))

#define GEN_QEMU_LOAD_TL(ldop, op)                                      \
static void glue(gen_qemu_, ldop)(DisasContext *ctx,                    \
                                  TCGv val,                             \
                                  TCGv addr)                            \
{                                                                       \
    tcg_gen_qemu_ld_tl(val, addr, ctx->mem_idx, op);                    \
}

GEN_QEMU_LOAD_TL(ld8u,  DEF_MEMOP(MO_UB))
GEN_QEMU_LOAD_TL(ld16u, DEF_MEMOP(MO_UW))
GEN_QEMU_LOAD_TL(ld16s, DEF_MEMOP(MO_SW))
GEN_QEMU_LOAD_TL(ld32u, DEF_MEMOP(MO_UL))
GEN_QEMU_LOAD_TL(ld32s, DEF_MEMOP(MO_SL))

GEN_QEMU_LOAD_TL(ld16ur, BSWAP_MEMOP(MO_UW))
GEN_QEMU_LOAD_TL(ld32ur, BSWAP_MEMOP(MO_UL))

#define GEN_QEMU_LOAD_64(ldop, op)                                  \
static void glue(gen_qemu_, glue(ldop, _i64))(DisasContext *ctx,    \
                                             TCGv_i64 val,          \
                                             TCGv addr)             \
{                                                                   \
    tcg_gen_qemu_ld_i64(val, addr, ctx->mem_idx, op);               \
}

GEN_QEMU_LOAD_64(ld8u,  DEF_MEMOP(MO_UB))
GEN_QEMU_LOAD_64(ld16u, DEF_MEMOP(MO_UW))
GEN_QEMU_LOAD_64(ld32u, DEF_MEMOP(MO_UL))
GEN_QEMU_LOAD_64(ld32s, DEF_MEMOP(MO_SL))
GEN_QEMU_LOAD_64(ld64,  DEF_MEMOP(MO_Q))

#if defined(TARGET_PPC64)
GEN_QEMU_LOAD_64(ld64ur, BSWAP_MEMOP(MO_Q))
#endif

#define GEN_QEMU_STORE_TL(stop, op)                                     \
static void glue(gen_qemu_, stop)(DisasContext *ctx,                    \
                                  TCGv val,                             \
                                  TCGv addr)                            \
{                                                                       \
    tcg_gen_qemu_st_tl(val, addr, ctx->mem_idx, op);                    \
}

GEN_QEMU_STORE_TL(st8,  DEF_MEMOP(MO_UB))
GEN_QEMU_STORE_TL(st16, DEF_MEMOP(MO_UW))
GEN_QEMU_STORE_TL(st32, DEF_MEMOP(MO_UL))

GEN_QEMU_STORE_TL(st16r, BSWAP_MEMOP(MO_UW))
GEN_QEMU_STORE_TL(st32r, BSWAP_MEMOP(MO_UL))

#define GEN_QEMU_STORE_64(stop, op)                               \
static void glue(gen_qemu_, glue(stop, _i64))(DisasContext *ctx,  \
                                              TCGv_i64 val,       \
                                              TCGv addr)          \
{                                                                 \
    tcg_gen_qemu_st_i64(val, addr, ctx->mem_idx, op);             \
}

GEN_QEMU_STORE_64(st8,  DEF_MEMOP(MO_UB))
GEN_QEMU_STORE_64(st16, DEF_MEMOP(MO_UW))
GEN_QEMU_STORE_64(st32, DEF_MEMOP(MO_UL))
GEN_QEMU_STORE_64(st64, DEF_MEMOP(MO_Q))

#if defined(TARGET_PPC64)
GEN_QEMU_STORE_64(st64r, BSWAP_MEMOP(MO_Q))
#endif

#define GEN_LD(name, ldop, opc, type)                                         \
static void glue(gen_, name)(DisasContext *ctx)                                       \
{                                                                             \
    TCGv EA;                                                                  \
    gen_set_access_type(ctx, ACCESS_INT);                                     \
    EA = tcg_temp_new();                                                      \
    gen_addr_imm_index(ctx, EA, 0);                                           \
    gen_qemu_##ldop(ctx, cpu_gpr[rD(ctx->opcode)], EA);                       \
    tcg_temp_free(EA);                                                        \
}

#define GEN_LDU(name, ldop, opc, type)                                        \
static void glue(gen_, name##u)(DisasContext *ctx)                                    \
{                                                                             \
    TCGv EA;                                                                  \
    if (unlikely(rA(ctx->opcode) == 0 ||                                      \
                 rA(ctx->opcode) == rD(ctx->opcode))) {                       \
        gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);                   \
        return;                                                               \
    }                                                                         \
    gen_set_access_type(ctx, ACCESS_INT);                                     \
    EA = tcg_temp_new();                                                      \
    if (type == PPC_64B)                                                      \
        gen_addr_imm_index(ctx, EA, 0x03);                                    \
    else                                                                      \
        gen_addr_imm_index(ctx, EA, 0);                                       \
    gen_qemu_##ldop(ctx, cpu_gpr[rD(ctx->opcode)], EA);                       \
    tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], EA);                             \
    tcg_temp_free(EA);                                                        \
}

#define GEN_LDUX(name, ldop, opc2, opc3, type)                                \
static void glue(gen_, name##ux)(DisasContext *ctx)                                   \
{                                                                             \
    TCGv EA;                                                                  \
    if (unlikely(rA(ctx->opcode) == 0 ||                                      \
                 rA(ctx->opcode) == rD(ctx->opcode))) {                       \
        gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);                   \
        return;                                                               \
    }                                                                         \
    gen_set_access_type(ctx, ACCESS_INT);                                     \
    EA = tcg_temp_new();                                                      \
    gen_addr_reg_index(ctx, EA);                                              \
    gen_qemu_##ldop(ctx, cpu_gpr[rD(ctx->opcode)], EA);                       \
    tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], EA);                             \
    tcg_temp_free(EA);                                                        \
}

#define GEN_LDX_E(name, ldop, opc2, opc3, type, type2, chk)                   \
static void glue(gen_, name##x)(DisasContext *ctx)                            \
{                                                                             \
    TCGv EA;                                                                  \
    chk;                                                                      \
    gen_set_access_type(ctx, ACCESS_INT);                                     \
    EA = tcg_temp_new();                                                      \
    gen_addr_reg_index(ctx, EA);                                              \
    gen_qemu_##ldop(ctx, cpu_gpr[rD(ctx->opcode)], EA);                       \
    tcg_temp_free(EA);                                                        \
}

#define GEN_LDX(name, ldop, opc2, opc3, type)                                 \
    GEN_LDX_E(name, ldop, opc2, opc3, type, PPC_NONE, CHK_NONE)

#define GEN_LDX_HVRM(name, ldop, opc2, opc3, type)                            \
    GEN_LDX_E(name, ldop, opc2, opc3, type, PPC_NONE, CHK_HVRM)

#define GEN_LDS(name, ldop, op, type)                                         \
GEN_LD(name, ldop, op | 0x20, type);                                          \
GEN_LDU(name, ldop, op | 0x21, type);                                         \
GEN_LDUX(name, ldop, 0x17, op | 0x01, type);                                  \
GEN_LDX(name, ldop, 0x17, op | 0x00, type)

/* lbz lbzu lbzux lbzx */
GEN_LDS(lbz, ld8u, 0x02, PPC_INTEGER);
/* lha lhau lhaux lhax */
GEN_LDS(lha, ld16s, 0x0A, PPC_INTEGER);
/* lhz lhzu lhzux lhzx */
GEN_LDS(lhz, ld16u, 0x08, PPC_INTEGER);
/* lwz lwzu lwzux lwzx */
GEN_LDS(lwz, ld32u, 0x00, PPC_INTEGER);
#if defined(TARGET_PPC64)
/* lwaux */
GEN_LDUX(lwa, ld32s, 0x15, 0x0B, PPC_64B);
/* lwax */
GEN_LDX(lwa, ld32s, 0x15, 0x0A, PPC_64B);
/* ldux */
GEN_LDUX(ld, ld64_i64, 0x15, 0x01, PPC_64B);
/* ldx */
GEN_LDX(ld, ld64_i64, 0x15, 0x00, PPC_64B);

/* CI load/store variants */
GEN_LDX_HVRM(ldcix, ld64_i64, 0x15, 0x1b, PPC_CILDST)
GEN_LDX_HVRM(lwzcix, ld32u, 0x15, 0x15, PPC_CILDST)
GEN_LDX_HVRM(lhzcix, ld16u, 0x15, 0x19, PPC_CILDST)
GEN_LDX_HVRM(lbzcix, ld8u, 0x15, 0x1a, PPC_CILDST)

static void gen_ld(DisasContext *ctx)
{
    TCGv EA;
    if (Rc(ctx->opcode)) {
        if (unlikely(rA(ctx->opcode) == 0 ||
                     rA(ctx->opcode) == rD(ctx->opcode))) {
            gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);
            return;
        }
    }
    gen_set_access_type(ctx, ACCESS_INT);
    EA = tcg_temp_new();
    gen_addr_imm_index(ctx, EA, 0x03);
    if (ctx->opcode & 0x02) {
        /* lwa (lwau is undefined) */
        gen_qemu_ld32s(ctx, cpu_gpr[rD(ctx->opcode)], EA);
    } else {
        /* ld - ldu */
        gen_qemu_ld64_i64(ctx, cpu_gpr[rD(ctx->opcode)], EA);
    }
    if (Rc(ctx->opcode))
        tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], EA);
    tcg_temp_free(EA);
}

/* lq */
static void gen_lq(DisasContext *ctx)
{
    int ra, rd;
    TCGv EA;

    /* lq is a legal user mode instruction starting in ISA 2.07 */
    bool legal_in_user_mode = (ctx->insns_flags2 & PPC2_LSQ_ISA207) != 0;
    bool le_is_supported = (ctx->insns_flags2 & PPC2_LSQ_ISA207) != 0;

    if (!legal_in_user_mode && ctx->pr) {
        gen_priv_exception(ctx, POWERPC_EXCP_PRIV_OPC);
        return;
    }

    if (!le_is_supported && ctx->le_mode) {
        gen_align_no_le(ctx);
        return;
    }
    ra = rA(ctx->opcode);
    rd = rD(ctx->opcode);
    if (unlikely((rd & 1) || rd == ra)) {
        gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);
        return;
    }

    gen_set_access_type(ctx, ACCESS_INT);
    EA = tcg_temp_new();
    gen_addr_imm_index(ctx, EA, 0x0F);

    /* We only need to swap high and low halves. gen_qemu_ld64_i64 does
       necessary 64-bit byteswap already. */
    if (unlikely(ctx->le_mode)) {
        gen_qemu_ld64_i64(ctx, cpu_gpr[rd + 1], EA);
        gen_addr_add(ctx, EA, EA, 8);
        gen_qemu_ld64_i64(ctx, cpu_gpr[rd], EA);
    } else {
        gen_qemu_ld64_i64(ctx, cpu_gpr[rd], EA);
        gen_addr_add(ctx, EA, EA, 8);
        gen_qemu_ld64_i64(ctx, cpu_gpr[rd + 1], EA);
    }
    tcg_temp_free(EA);
}
#endif

/***                              Integer store                            ***/
#define GEN_ST(name, stop, opc, type)                                         \
static void glue(gen_, name)(DisasContext *ctx)                                       \
{                                                                             \
    TCGv EA;                                                                  \
    gen_set_access_type(ctx, ACCESS_INT);                                     \
    EA = tcg_temp_new();                                                      \
    gen_addr_imm_index(ctx, EA, 0);                                           \
    gen_qemu_##stop(ctx, cpu_gpr[rS(ctx->opcode)], EA);                       \
    tcg_temp_free(EA);                                                        \
}

#define GEN_STU(name, stop, opc, type)                                        \
static void glue(gen_, stop##u)(DisasContext *ctx)                                    \
{                                                                             \
    TCGv EA;                                                                  \
    if (unlikely(rA(ctx->opcode) == 0)) {                                     \
        gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);                   \
        return;                                                               \
    }                                                                         \
    gen_set_access_type(ctx, ACCESS_INT);                                     \
    EA = tcg_temp_new();                                                      \
    if (type == PPC_64B)                                                      \
        gen_addr_imm_index(ctx, EA, 0x03);                                    \
    else                                                                      \
        gen_addr_imm_index(ctx, EA, 0);                                       \
    gen_qemu_##stop(ctx, cpu_gpr[rS(ctx->opcode)], EA);                       \
    tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], EA);                             \
    tcg_temp_free(EA);                                                        \
}

#define GEN_STUX(name, stop, opc2, opc3, type)                                \
static void glue(gen_, name##ux)(DisasContext *ctx)                                   \
{                                                                             \
    TCGv EA;                                                                  \
    if (unlikely(rA(ctx->opcode) == 0)) {                                     \
        gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);                   \
        return;                                                               \
    }                                                                         \
    gen_set_access_type(ctx, ACCESS_INT);                                     \
    EA = tcg_temp_new();                                                      \
    gen_addr_reg_index(ctx, EA);                                              \
    gen_qemu_##stop(ctx, cpu_gpr[rS(ctx->opcode)], EA);                       \
    tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], EA);                             \
    tcg_temp_free(EA);                                                        \
}

#define GEN_STX_E(name, stop, opc2, opc3, type, type2, chk)                   \
static void glue(gen_, name##x)(DisasContext *ctx)                            \
{                                                                             \
    TCGv EA;                                                                  \
    chk;                                                                      \
    gen_set_access_type(ctx, ACCESS_INT);                                     \
    EA = tcg_temp_new();                                                      \
    gen_addr_reg_index(ctx, EA);                                              \
    gen_qemu_##stop(ctx, cpu_gpr[rS(ctx->opcode)], EA);                       \
    tcg_temp_free(EA);                                                        \
}
#define GEN_STX(name, stop, opc2, opc3, type)                                 \
    GEN_STX_E(name, stop, opc2, opc3, type, PPC_NONE, CHK_NONE)

#define GEN_STX_HVRM(name, stop, opc2, opc3, type)                            \
    GEN_STX_E(name, stop, opc2, opc3, type, PPC_NONE, CHK_HVRM)

#define GEN_STS(name, stop, op, type)                                         \
GEN_ST(name, stop, op | 0x20, type);                                          \
GEN_STU(name, stop, op | 0x21, type);                                         \
GEN_STUX(name, stop, 0x17, op | 0x01, type);                                  \
GEN_STX(name, stop, 0x17, op | 0x00, type)

/* stb stbu stbux stbx */
GEN_STS(stb, st8, 0x06, PPC_INTEGER);
/* sth sthu sthux sthx */
GEN_STS(sth, st16, 0x0C, PPC_INTEGER);
/* stw stwu stwux stwx */
GEN_STS(stw, st32, 0x04, PPC_INTEGER);
#if defined(TARGET_PPC64)
GEN_STUX(std, st64_i64, 0x15, 0x05, PPC_64B);
GEN_STX(std, st64_i64, 0x15, 0x04, PPC_64B);
GEN_STX_HVRM(stdcix, st64_i64, 0x15, 0x1f, PPC_CILDST)
GEN_STX_HVRM(stwcix, st32, 0x15, 0x1c, PPC_CILDST)
GEN_STX_HVRM(sthcix, st16, 0x15, 0x1d, PPC_CILDST)
GEN_STX_HVRM(stbcix, st8, 0x15, 0x1e, PPC_CILDST)

static void gen_std(DisasContext *ctx)
{
    int rs;
    TCGv EA;

    rs = rS(ctx->opcode);
    if ((ctx->opcode & 0x3) == 0x2) { /* stq */
        bool legal_in_user_mode = (ctx->insns_flags2 & PPC2_LSQ_ISA207) != 0;
        bool le_is_supported = (ctx->insns_flags2 & PPC2_LSQ_ISA207) != 0;

        if (!(ctx->insns_flags & PPC_64BX)) {
            gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);
        }

        if (!legal_in_user_mode && ctx->pr) {
            gen_priv_exception(ctx, POWERPC_EXCP_PRIV_OPC);
            return;
        }

        if (!le_is_supported && ctx->le_mode) {
            gen_align_no_le(ctx);
            return;
        }

        if (unlikely(rs & 1)) {
            gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);
            return;
        }
        gen_set_access_type(ctx, ACCESS_INT);
        EA = tcg_temp_new();
        gen_addr_imm_index(ctx, EA, 0x03);

        /* We only need to swap high and low halves. gen_qemu_st64_i64 does
           necessary 64-bit byteswap already. */
        if (unlikely(ctx->le_mode)) {
            gen_qemu_st64_i64(ctx, cpu_gpr[rs + 1], EA);
            gen_addr_add(ctx, EA, EA, 8);
            gen_qemu_st64_i64(ctx, cpu_gpr[rs], EA);
        } else {
            gen_qemu_st64_i64(ctx, cpu_gpr[rs], EA);
            gen_addr_add(ctx, EA, EA, 8);
            gen_qemu_st64_i64(ctx, cpu_gpr[rs + 1], EA);
        }
        tcg_temp_free(EA);
    } else {
        /* std / stdu*/
        if (Rc(ctx->opcode)) {
            if (unlikely(rA(ctx->opcode) == 0)) {
                gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);
                return;
            }
        }
        gen_set_access_type(ctx, ACCESS_INT);
        EA = tcg_temp_new();
        gen_addr_imm_index(ctx, EA, 0x03);
        gen_qemu_st64_i64(ctx, cpu_gpr[rs], EA);
        if (Rc(ctx->opcode))
            tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], EA);
        tcg_temp_free(EA);
    }
}
#endif
/***                Integer load and store with byte reverse               ***/

/* lhbrx */
GEN_LDX(lhbr, ld16ur, 0x16, 0x18, PPC_INTEGER);

/* lwbrx */
GEN_LDX(lwbr, ld32ur, 0x16, 0x10, PPC_INTEGER);

#if defined(TARGET_PPC64)
/* ldbrx */
GEN_LDX_E(ldbr, ld64ur_i64, 0x14, 0x10, PPC_NONE, PPC2_DBRX, CHK_NONE);
/* stdbrx */
GEN_STX_E(stdbr, st64r_i64, 0x14, 0x14, PPC_NONE, PPC2_DBRX, CHK_NONE);
#endif  /* TARGET_PPC64 */

/* sthbrx */
GEN_STX(sthbr, st16r, 0x16, 0x1C, PPC_INTEGER);
/* stwbrx */
GEN_STX(stwbr, st32r, 0x16, 0x14, PPC_INTEGER);

/***                    Integer load and store multiple                    ***/

/* lmw */
static void gen_lmw(DisasContext *ctx)
{
    TCGv t0;
    TCGv_i32 t1;

    if (ctx->le_mode) {
        gen_align_no_le(ctx);
        return;
    }
    gen_set_access_type(ctx, ACCESS_INT);
    t0 = tcg_temp_new();
    t1 = tcg_const_i32(rD(ctx->opcode));
    gen_addr_imm_index(ctx, t0, 0);
    gen_helper_lmw(cpu_env, t0, t1);
    tcg_temp_free(t0);
    tcg_temp_free_i32(t1);
}

/* stmw */
static void gen_stmw(DisasContext *ctx)
{
    TCGv t0;
    TCGv_i32 t1;

    if (ctx->le_mode) {
        gen_align_no_le(ctx);
        return;
    }
    gen_set_access_type(ctx, ACCESS_INT);
    t0 = tcg_temp_new();
    t1 = tcg_const_i32(rS(ctx->opcode));
    gen_addr_imm_index(ctx, t0, 0);
    gen_helper_stmw(cpu_env, t0, t1);
    tcg_temp_free(t0);
    tcg_temp_free_i32(t1);
}

/***                    Integer load and store strings                     ***/

/* lswi */
/* PowerPC32 specification says we must generate an exception if
 * rA is in the range of registers to be loaded.
 * In an other hand, IBM says this is valid, but rA won't be loaded.
 * For now, I'll follow the spec...
 */
static void gen_lswi(DisasContext *ctx)
{
    TCGv t0;
    TCGv_i32 t1, t2;
    int nb = NB(ctx->opcode);
    int start = rD(ctx->opcode);
    int ra = rA(ctx->opcode);
    int nr;

    if (ctx->le_mode) {
        gen_align_no_le(ctx);
        return;
    }
    if (nb == 0)
        nb = 32;
    nr = (nb + 3) / 4;
    if (unlikely(lsw_reg_in_range(start, nr, ra))) {
        gen_inval_exception(ctx, POWERPC_EXCP_INVAL_LSWX);
        return;
    }
    gen_set_access_type(ctx, ACCESS_INT);
    t0 = tcg_temp_new();
    gen_addr_register(ctx, t0);
    t1 = tcg_const_i32(nb);
    t2 = tcg_const_i32(start);
    gen_helper_lsw(cpu_env, t0, t1, t2);
    tcg_temp_free(t0);
    tcg_temp_free_i32(t1);
    tcg_temp_free_i32(t2);
}

/* lswx */
static void gen_lswx(DisasContext *ctx)
{
    TCGv t0;
    TCGv_i32 t1, t2, t3;

    if (ctx->le_mode) {
        gen_align_no_le(ctx);
        return;
    }
    gen_set_access_type(ctx, ACCESS_INT);
    t0 = tcg_temp_new();
    gen_addr_reg_index(ctx, t0);
    t1 = tcg_const_i32(rD(ctx->opcode));
    t2 = tcg_const_i32(rA(ctx->opcode));
    t3 = tcg_const_i32(rB(ctx->opcode));
    gen_helper_lswx(cpu_env, t0, t1, t2, t3);
    tcg_temp_free(t0);
    tcg_temp_free_i32(t1);
    tcg_temp_free_i32(t2);
    tcg_temp_free_i32(t3);
}

/* stswi */
static void gen_stswi(DisasContext *ctx)
{
    TCGv t0;
    TCGv_i32 t1, t2;
    int nb = NB(ctx->opcode);

    if (ctx->le_mode) {
        gen_align_no_le(ctx);
        return;
    }
    gen_set_access_type(ctx, ACCESS_INT);
    t0 = tcg_temp_new();
    gen_addr_register(ctx, t0);
    if (nb == 0)
        nb = 32;
    t1 = tcg_const_i32(nb);
    t2 = tcg_const_i32(rS(ctx->opcode));
    gen_helper_stsw(cpu_env, t0, t1, t2);
    tcg_temp_free(t0);
    tcg_temp_free_i32(t1);
    tcg_temp_free_i32(t2);
}

/* stswx */
static void gen_stswx(DisasContext *ctx)
{
    TCGv t0;
    TCGv_i32 t1, t2;

    if (ctx->le_mode) {
        gen_align_no_le(ctx);
        return;
    }
    gen_set_access_type(ctx, ACCESS_INT);
    t0 = tcg_temp_new();
    gen_addr_reg_index(ctx, t0);
    t1 = tcg_temp_new_i32();
    tcg_gen_trunc_tl_i32(t1, cpu_xer);
    tcg_gen_andi_i32(t1, t1, 0x7F);
    t2 = tcg_const_i32(rS(ctx->opcode));
    gen_helper_stsw(cpu_env, t0, t1, t2);
    tcg_temp_free(t0);
    tcg_temp_free_i32(t1);
    tcg_temp_free_i32(t2);
}

/***                        Memory synchronisation                         ***/
/* eieio */
static void gen_eieio(DisasContext *ctx)
{
    tcg_gen_mb(TCG_MO_LD_ST | TCG_BAR_SC);
}

#if !defined(CONFIG_USER_ONLY)
static inline void gen_check_tlb_flush(DisasContext *ctx, bool global)
{
    TCGv_i32 t;
    TCGLabel *l;

    if (!ctx->lazy_tlb_flush) {
        return;
    }
    l = gen_new_label();
    t = tcg_temp_new_i32();
    tcg_gen_ld_i32(t, cpu_env, offsetof(CPUPPCState, tlb_need_flush));
    tcg_gen_brcondi_i32(TCG_COND_EQ, t, 0, l);
    if (global) {
        gen_helper_check_tlb_flush_global(cpu_env);
    } else {
        gen_helper_check_tlb_flush_local(cpu_env);
    }
    gen_set_label(l);
    tcg_temp_free_i32(t);
}
#else
static inline void gen_check_tlb_flush(DisasContext *ctx, bool global) { }
#endif