symbian-qemu-0.9.1-12/qemu-symbian-svp/tcg/ppc64/tcg-target.c
author johnathan.white@2718R8BGH51.accenture.com
Mon, 08 Mar 2010 18:45:03 +0000
changeset 46 b6935a90ca64
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority

/*
 * Tiny Code Generator for QEMU
 *
 * Copyright (c) 2008 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#define TCG_CT_CONST_U32 0x100

static uint8_t *tb_ret_addr;

#define FAST_PATH

#if TARGET_PHYS_ADDR_BITS == 32
#define LD_ADDEND LWZ
#else
#define LD_ADDEND LD
#endif

#if TARGET_LONG_BITS == 32
#define LD_ADDR LWZU
#define CMP_L 0
#else
#define LD_ADDR LDU
#define CMP_L (1<<21)
#endif

#ifndef NDEBUG
static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
    "r0",
    "r1",
    "rp",
    "r3",
    "r4",
    "r5",
    "r6",
    "r7",
    "r8",
    "r9",
    "r10",
    "r11",
    "r12",
    "r13",
    "r14",
    "r15",
    "r16",
    "r17",
    "r18",
    "r19",
    "r20",
    "r21",
    "r22",
    "r23",
    "r24",
    "r25",
    "r26",
    "r27",
    "r28",
    "r29",
    "r30",
    "r31"
};
#endif

static const int tcg_target_reg_alloc_order[] = {
    TCG_REG_R14,
    TCG_REG_R15,
    TCG_REG_R16,
    TCG_REG_R17,
    TCG_REG_R18,
    TCG_REG_R19,
    TCG_REG_R20,
    TCG_REG_R21,
    TCG_REG_R22,
    TCG_REG_R23,
    TCG_REG_R28,
    TCG_REG_R29,
    TCG_REG_R30,
    TCG_REG_R31,
    TCG_REG_R3,
    TCG_REG_R4,
    TCG_REG_R5,
    TCG_REG_R6,
    TCG_REG_R7,
    TCG_REG_R8,
    TCG_REG_R9,
    TCG_REG_R10,
    TCG_REG_R11,
    TCG_REG_R12,
    TCG_REG_R13,
    TCG_REG_R0,
    TCG_REG_R1,
    TCG_REG_R2,
    TCG_REG_R24,
    TCG_REG_R25,
    TCG_REG_R26,
    TCG_REG_R27
};

static const int tcg_target_call_iarg_regs[] = {
    TCG_REG_R3,
    TCG_REG_R4,
    TCG_REG_R5,
    TCG_REG_R6,
    TCG_REG_R7,
    TCG_REG_R8,
    TCG_REG_R9,
    TCG_REG_R10
};

static const int tcg_target_call_oarg_regs[2] = {
    TCG_REG_R3
};

static const int tcg_target_callee_save_regs[] = {
    TCG_REG_R14,
    TCG_REG_R15,
    TCG_REG_R16,
    TCG_REG_R17,
    TCG_REG_R18,
    TCG_REG_R19,
    TCG_REG_R20,
    TCG_REG_R21,
    TCG_REG_R22,
    TCG_REG_R23,
    TCG_REG_R28,
    TCG_REG_R29,
    TCG_REG_R30,
    TCG_REG_R31
};

static uint32_t reloc_pc24_val (void *pc, tcg_target_long target)
{
    tcg_target_long disp;

    disp = target - (tcg_target_long) pc;
    if ((disp << 38) >> 38 != disp)
        tcg_abort ();

    return disp & 0x3fffffc;
}

static void reloc_pc24 (void *pc, tcg_target_long target)
{
    *(uint32_t *) pc = (*(uint32_t *) pc & ~0x3fffffc)
        | reloc_pc24_val (pc, target);
}

static uint16_t reloc_pc14_val (void *pc, tcg_target_long target)
{
    tcg_target_long disp;

    disp = target - (tcg_target_long) pc;
    if (disp != (int16_t) disp)
        tcg_abort ();

    return disp & 0xfffc;
}

static void reloc_pc14 (void *pc, tcg_target_long target)
{
    *(uint32_t *) pc = (*(uint32_t *) pc & ~0xfffc)
        | reloc_pc14_val (pc, target);
}

static void patch_reloc (uint8_t *code_ptr, int type,
                         tcg_target_long value, tcg_target_long addend)
{
    value += addend;
    switch (type) {
    case R_PPC_REL14:
        reloc_pc14 (code_ptr, value);
        break;
    case R_PPC_REL24:
        reloc_pc24 (code_ptr, value);
        break;
    default:
        tcg_abort ();
    }
}

/* maximum number of register used for input function arguments */
static int tcg_target_get_call_iarg_regs_count (int flags)
{
    return ARRAY_SIZE (tcg_target_call_iarg_regs);
}

/* parse target specific constraints */
static int target_parse_constraint (TCGArgConstraint *ct, const char **pct_str)
{
    const char *ct_str;

    ct_str = *pct_str;
    switch (ct_str[0]) {
    case 'A': case 'B': case 'C': case 'D':
        ct->ct |= TCG_CT_REG;
        tcg_regset_set_reg (ct->u.regs, 3 + ct_str[0] - 'A');
        break;
    case 'r':
        ct->ct |= TCG_CT_REG;
        tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
        break;
    case 'L':                   /* qemu_ld constraint */
        ct->ct |= TCG_CT_REG;
        tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3);
#ifdef CONFIG_SOFTMMU
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4);
#endif
        break;
    case 'S':                   /* qemu_st constraint */
        ct->ct |= TCG_CT_REG;
        tcg_regset_set32 (ct->u.regs, 0, 0xffffffff);
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3);
#ifdef CONFIG_SOFTMMU
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4);
        tcg_regset_reset_reg (ct->u.regs, TCG_REG_R5);
#endif
        break;
    case 'Z':
        ct->ct |= TCG_CT_CONST_U32;
        break;
    default:
        return -1;
    }
    ct_str++;
    *pct_str = ct_str;
    return 0;
}

/* test if a constant matches the constraint */
static int tcg_target_const_match (tcg_target_long val,
                                   const TCGArgConstraint *arg_ct)
{
    int ct;

    ct = arg_ct->ct;
    if (ct & TCG_CT_CONST)
        return 1;
    else if ((ct & TCG_CT_CONST_U32) && (val == (uint32_t) val))
        return 1;
    return 0;
}

#define OPCD(opc) ((opc)<<26)
#define XO19(opc) (OPCD(19)|((opc)<<1))
#define XO30(opc) (OPCD(30)|((opc)<<2))
#define XO31(opc) (OPCD(31)|((opc)<<1))
#define XO58(opc) (OPCD(58)|(opc))
#define XO62(opc) (OPCD(62)|(opc))

#define B      OPCD( 18)
#define BC     OPCD( 16)
#define LBZ    OPCD( 34)
#define LHZ    OPCD( 40)
#define LHA    OPCD( 42)
#define LWZ    OPCD( 32)
#define STB    OPCD( 38)
#define STH    OPCD( 44)
#define STW    OPCD( 36)

#define STD    XO62(  0)
#define STDU   XO62(  1)
#define STDX   XO31(149)

#define LD     XO58(  0)
#define LDX    XO31( 21)
#define LDU    XO58(  1)
#define LWA    XO58(  2)
#define LWAX   XO31(341)

#define ADDI   OPCD( 14)
#define ADDIS  OPCD( 15)
#define ORI    OPCD( 24)
#define ORIS   OPCD( 25)
#define XORI   OPCD( 26)
#define XORIS  OPCD( 27)
#define ANDI   OPCD( 28)
#define ANDIS  OPCD( 29)
#define MULLI  OPCD(  7)
#define CMPLI  OPCD( 10)
#define CMPI   OPCD( 11)

#define LWZU   OPCD( 33)
#define STWU   OPCD( 37)

#define RLWINM OPCD( 21)

#define RLDICL XO30(  0)
#define RLDICR XO30(  1)
#define RLDIMI XO30(  3)

#define BCLR   XO19( 16)
#define BCCTR  XO19(528)
#define CRAND  XO19(257)
#define CRANDC XO19(129)
#define CRNAND XO19(225)
#define CROR   XO19(449)

#define EXTSB  XO31(954)
#define EXTSH  XO31(922)
#define EXTSW  XO31(986)
#define ADD    XO31(266)
#define ADDE   XO31(138)
#define ADDC   XO31( 10)
#define AND    XO31( 28)
#define SUBF   XO31( 40)
#define SUBFC  XO31(  8)
#define SUBFE  XO31(136)
#define OR     XO31(444)
#define XOR    XO31(316)
#define MULLW  XO31(235)
#define MULHWU XO31( 11)
#define DIVW   XO31(491)
#define DIVWU  XO31(459)
#define CMP    XO31(  0)
#define CMPL   XO31( 32)
#define LHBRX  XO31(790)
#define LWBRX  XO31(534)
#define STHBRX XO31(918)
#define STWBRX XO31(662)
#define MFSPR  XO31(339)
#define MTSPR  XO31(467)
#define SRAWI  XO31(824)
#define NEG    XO31(104)

#define MULLD  XO31(233)
#define MULHD  XO31( 73)
#define MULHDU XO31(  9)
#define DIVD   XO31(489)
#define DIVDU  XO31(457)

#define LBZX   XO31( 87)
#define LHZX   XO31(276)
#define LHAX   XO31(343)
#define LWZX   XO31( 23)
#define STBX   XO31(215)
#define STHX   XO31(407)
#define STWX   XO31(151)

#define SPR(a,b) ((((a)<<5)|(b))<<11)
#define LR     SPR(8, 0)
#define CTR    SPR(9, 0)

#define SLW    XO31( 24)
#define SRW    XO31(536)
#define SRAW   XO31(792)

#define SLD    XO31( 27)
#define SRD    XO31(539)
#define SRAD   XO31(794)
#define SRADI  XO31(413<<1)

#define LMW    OPCD( 46)
#define STMW   OPCD( 47)

#define TW     XO31( 4)
#define TRAP   (TW | TO (31))

#define RT(r) ((r)<<21)
#define RS(r) ((r)<<21)
#define RA(r) ((r)<<16)
#define RB(r) ((r)<<11)
#define TO(t) ((t)<<21)
#define SH(s) ((s)<<11)
#define MB(b) ((b)<<6)
#define ME(e) ((e)<<1)
#define BO(o) ((o)<<21)
#define MB64(b) ((b)<<5)

#define LK    1

#define TAB(t,a,b) (RT(t) | RA(a) | RB(b))
#define SAB(s,a,b) (RS(s) | RA(a) | RB(b))

#define BF(n)    ((n)<<23)
#define BI(n, c) (((c)+((n)*4))<<16)
#define BT(n, c) (((c)+((n)*4))<<21)
#define BA(n, c) (((c)+((n)*4))<<16)
#define BB(n, c) (((c)+((n)*4))<<11)

#define BO_COND_TRUE  BO (12)
#define BO_COND_FALSE BO ( 4)
#define BO_ALWAYS     BO (20)

enum {
    CR_LT,
    CR_GT,
    CR_EQ,
    CR_SO
};

static const uint32_t tcg_to_bc[10] = {
    [TCG_COND_EQ]  = BC | BI (7, CR_EQ) | BO_COND_TRUE,
    [TCG_COND_NE]  = BC | BI (7, CR_EQ) | BO_COND_FALSE,
    [TCG_COND_LT]  = BC | BI (7, CR_LT) | BO_COND_TRUE,
    [TCG_COND_GE]  = BC | BI (7, CR_LT) | BO_COND_FALSE,
    [TCG_COND_LE]  = BC | BI (7, CR_GT) | BO_COND_FALSE,
    [TCG_COND_GT]  = BC | BI (7, CR_GT) | BO_COND_TRUE,
    [TCG_COND_LTU] = BC | BI (7, CR_LT) | BO_COND_TRUE,
    [TCG_COND_GEU] = BC | BI (7, CR_LT) | BO_COND_FALSE,
    [TCG_COND_LEU] = BC | BI (7, CR_GT) | BO_COND_FALSE,
    [TCG_COND_GTU] = BC | BI (7, CR_GT) | BO_COND_TRUE,
};

static void tcg_out_mov (TCGContext *s, int ret, int arg)
{
    tcg_out32 (s, OR | SAB (arg, ret, arg));
}

static void tcg_out_rld (TCGContext *s, int op, int ra, int rs, int sh, int mb)
{
    sh = SH (sh & 0x1f) | (((sh >> 5) & 1) << 1);
    mb = MB64 ((mb >> 5) | ((mb << 1) & 0x3f));
    tcg_out32 (s, op | RA (ra) | RS (rs) | sh | mb);
}

static void tcg_out_movi32 (TCGContext *s, int ret, int32_t arg)
{
    if (arg == (int16_t) arg)
        tcg_out32 (s, ADDI | RT (ret) | RA (0) | (arg & 0xffff));
    else {
        tcg_out32 (s, ADDIS | RT (ret) | RA (0) | ((arg >> 16) & 0xffff));
        if (arg & 0xffff)
            tcg_out32 (s, ORI | RS (ret) | RA (ret) | (arg & 0xffff));
    }
}

static void tcg_out_movi (TCGContext *s, TCGType type,
                          int ret, tcg_target_long arg)
{
    int32_t arg32 = arg;

    if (type == TCG_TYPE_I32 || arg == arg32) {
        tcg_out_movi32 (s, ret, arg32);
    }
    else {
        if ((uint64_t) arg >> 32) {
            uint16_t h16 = arg >> 16;
            uint16_t l16 = arg;

            tcg_out_movi32 (s, ret, arg >> 32);
            tcg_out_rld (s, RLDICR, ret, ret, 32, 31);
            if (h16) tcg_out32 (s, ORIS | RS (ret) | RA (ret) | h16);
            if (l16) tcg_out32 (s, ORI | RS (ret) | RA (ret) | l16);
        }
        else {
            tcg_out_movi32 (s, ret, arg32);
            if (arg32 < 0)
                tcg_out_rld (s, RLDICL, ret, ret, 0, 32);
        }
    }
}

static void tcg_out_call (TCGContext *s, tcg_target_long arg, int const_arg)
{
    int reg;

    if (const_arg) {
        reg = 2;
        tcg_out_movi (s, TCG_TYPE_I64, reg, arg);
    }
    else reg = arg;

    tcg_out32 (s, LD | RT (0) | RA (reg));
    tcg_out32 (s, MTSPR | RA (0) | CTR);
    tcg_out32 (s, LD | RT (11) | RA (reg) | 16);
    tcg_out32 (s, LD | RT (2) | RA (reg) | 8);
    tcg_out32 (s, BCCTR | BO_ALWAYS | LK);
}

static void tcg_out_ldst (TCGContext *s, int ret, int addr,
                          int offset, int op1, int op2)
{
    if (offset == (int16_t) offset)
        tcg_out32 (s, op1 | RT (ret) | RA (addr) | (offset & 0xffff));
    else {
        tcg_out_movi (s, TCG_TYPE_I64, 0, offset);
        tcg_out32 (s, op2 | RT (ret) | RA (addr) | RB (0));
    }
}

static void tcg_out_ldsta (TCGContext *s, int ret, int addr,
                           int offset, int op1, int op2)
{
    if (offset == (int16_t) (offset & ~3))
        tcg_out32 (s, op1 | RT (ret) | RA (addr) | (offset & 0xffff));
    else {
        tcg_out_movi (s, TCG_TYPE_I64, 0, offset);
        tcg_out32 (s, op2 | RT (ret) | RA (addr) | RB (0));
    }
}

static void tcg_out_b (TCGContext *s, int mask, tcg_target_long target)
{
    tcg_target_long disp;

    disp = target - (tcg_target_long) s->code_ptr;
    if ((disp << 38) >> 38 == disp)
        tcg_out32 (s, B | (disp & 0x3fffffc) | mask);
    else {
        tcg_out_movi (s, TCG_TYPE_I64, 0, (tcg_target_long) target);
        tcg_out32 (s, MTSPR | RS (0) | CTR);
        tcg_out32 (s, BCCTR | BO_ALWAYS | mask);
    }
}

#if defined (CONFIG_SOFTMMU)

#include "../../softmmu_defs.h"

static void *qemu_ld_helpers[4] = {
    __ldb_mmu,
    __ldw_mmu,
    __ldl_mmu,
    __ldq_mmu,
};

static void *qemu_st_helpers[4] = {
    __stb_mmu,
    __stw_mmu,
    __stl_mmu,
    __stq_mmu,
};

static void tcg_out_tlb_read (TCGContext *s, int r0, int r1, int r2,
                              int addr_reg, int s_bits, int offset)
{
#if TARGET_LONG_BITS == 32
    tcg_out_rld (s, RLDICL, addr_reg, addr_reg, 0, 32);

    tcg_out32 (s, (RLWINM
                   | RA (r0)
                   | RS (addr_reg)
                   | SH (32 - (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS))
                   | MB (32 - (CPU_TLB_BITS + CPU_TLB_ENTRY_BITS))
                   | ME (31 - CPU_TLB_ENTRY_BITS)
                   )
        );
    tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (TCG_AREG0));
    tcg_out32 (s, (LWZU | RT (r1) | RA (r0) | offset));
    tcg_out32 (s, (RLWINM
                   | RA (r2)
                   | RS (addr_reg)
                   | SH (0)
                   | MB ((32 - s_bits) & 31)
                   | ME (31 - TARGET_PAGE_BITS)
                   )
        );
#else
    tcg_out_rld (s, RLDICL, r0, addr_reg,
                 64 - TARGET_PAGE_BITS,
                 64 - CPU_TLB_BITS);
    tcg_out_rld (s, RLDICR, r0, r0,
                 CPU_TLB_ENTRY_BITS,
                 63 - CPU_TLB_ENTRY_BITS);

    tcg_out32 (s, ADD | TAB (r0, r0, TCG_AREG0));
    tcg_out32 (s, LD_ADDR | RT (r1) | RA (r0) | offset);

    if (!s_bits) {
        tcg_out_rld (s, RLDICR, r2, addr_reg, 0, 63 - TARGET_PAGE_BITS);
    }
    else {
        tcg_out_rld (s, RLDICL, r2, addr_reg,
                     64 - TARGET_PAGE_BITS,
                     TARGET_PAGE_BITS - s_bits);
        tcg_out_rld (s, RLDICL, r2, r2, TARGET_PAGE_BITS, 0);
    }
#endif
}
#endif

static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc)
{
    int addr_reg, data_reg, r0, r1, mem_index, s_bits, bswap;
#ifdef CONFIG_SOFTMMU
    int r2;
    void *label1_ptr, *label2_ptr;
#endif

    data_reg = *args++;
    addr_reg = *args++;
    mem_index = *args;
    s_bits = opc & 3;

#ifdef CONFIG_SOFTMMU
    r0 = 3;
    r1 = 4;
    r2 = 0;

    tcg_out_tlb_read (s, r0, r1, r2, addr_reg, s_bits,
                      offsetof (CPUState, tlb_table[mem_index][0].addr_read));

    tcg_out32 (s, CMP | BF (7) | RA (r2) | RB (r1) | CMP_L);

    label1_ptr = s->code_ptr;
#ifdef FAST_PATH
    tcg_out32 (s, BC | BI (7, CR_EQ) | BO_COND_TRUE);
#endif

    /* slow path */
    tcg_out_mov (s, 3, addr_reg);
    tcg_out_movi (s, TCG_TYPE_I64, 4, mem_index);

    tcg_out_call (s, (tcg_target_long) qemu_ld_helpers[s_bits], 1);

    switch (opc) {
    case 0|4:
        tcg_out32 (s, EXTSB | RA (data_reg) | RS (3));
        break;
    case 1|4:
        tcg_out32 (s, EXTSH | RA (data_reg) | RS (3));
        break;
    case 2|4:
        tcg_out32 (s, EXTSW | RA (data_reg) | RS (3));
        break;
    case 0:
    case 1:
    case 2:
    case 3:
        if (data_reg != 3)
            tcg_out_mov (s, data_reg, 3);
        break;
    }
    label2_ptr = s->code_ptr;
    tcg_out32 (s, B);

    /* label1: fast path */
#ifdef FAST_PATH
    reloc_pc14 (label1_ptr, (tcg_target_long) s->code_ptr);
#endif

    /* r0 now contains &env->tlb_table[mem_index][index].addr_read */
    tcg_out32 (s, (LD_ADDEND
                   | RT (r0)
                   | RA (r0)
                   | (offsetof (CPUTLBEntry, addend)
                      - offsetof (CPUTLBEntry, addr_read))
                   ));
    /* r0 = env->tlb_table[mem_index][index].addend */
    tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (addr_reg));
    /* r0 = env->tlb_table[mem_index][index].addend + addr */

#else  /* !CONFIG_SOFTMMU */
#if TARGET_LONG_BITS == 32
    tcg_out_rld (s, RLDICL, addr_reg, addr_reg, 0, 32);
#endif
    r0 = addr_reg;
    r1 = 3;
#endif

#ifdef TARGET_WORDS_BIGENDIAN
    bswap = 0;
#else
    bswap = 1;
#endif
    switch (opc) {
    default:
    case 0:
        tcg_out32 (s, LBZ | RT (data_reg) | RA (r0));
        break;
    case 0|4:
        tcg_out32 (s, LBZ | RT (data_reg) | RA (r0));
        tcg_out32 (s, EXTSB | RA (data_reg) | RS (data_reg));
        break;
    case 1:
        if (bswap) tcg_out32 (s, LHBRX | RT (data_reg) | RB (r0));
        else tcg_out32 (s, LHZ | RT (data_reg) | RA (r0));
        break;
    case 1|4:
        if (bswap) {
            tcg_out32 (s, LHBRX | RT (data_reg) | RB (r0));
            tcg_out32 (s, EXTSH | RA (data_reg) | RS (data_reg));
        }
        else tcg_out32 (s, LHA | RT (data_reg) | RA (r0));
        break;
    case 2:
        if (bswap) tcg_out32 (s, LWBRX | RT (data_reg) | RB (r0));
        else tcg_out32 (s, LWZ | RT (data_reg)| RA (r0));
        break;
    case 2|4:
        if (bswap) {
            tcg_out32 (s, LWBRX | RT (data_reg) | RB (r0));
            tcg_out32 (s, EXTSW | RA (data_reg) | RS (data_reg));
        }
        else tcg_out32 (s, LWA | RT (data_reg)| RA (r0));
        break;
    case 3:
        if (bswap) {
            tcg_out_movi32 (s, 0, 4);
            tcg_out32 (s, LWBRX | RT (data_reg) | RB (r0));
            tcg_out32 (s, LWBRX | RT (      r1) | RA (r0));
            tcg_out_rld (s, RLDIMI, data_reg, r1, 32, 0);
        }
        else tcg_out32 (s, LD | RT (data_reg) | RA (r0));
        break;
    }

#ifdef CONFIG_SOFTMMU
    reloc_pc24 (label2_ptr, (tcg_target_long) s->code_ptr);
#endif
}

static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc)
{
    int addr_reg, r0, r1, data_reg, mem_index, bswap;
#ifdef CONFIG_SOFTMMU
    int r2;
    void *label1_ptr, *label2_ptr;
#endif

    data_reg = *args++;
    addr_reg = *args++;
    mem_index = *args;

#ifdef CONFIG_SOFTMMU
    r0 = 3;
    r1 = 4;
    r2 = 0;

    tcg_out_tlb_read (s, r0, r1, r2, addr_reg, opc,
                      offsetof (CPUState, tlb_table[mem_index][0].addr_write));

    tcg_out32 (s, CMP | BF (7) | RA (r2) | RB (r1) | CMP_L);

    label1_ptr = s->code_ptr;
#ifdef FAST_PATH
    tcg_out32 (s, BC | BI (7, CR_EQ) | BO_COND_TRUE);
#endif

    /* slow path */
    tcg_out_mov (s, 3, addr_reg);
    tcg_out_rld (s, RLDICL, 4, data_reg, 0, 64 - (1 << (3 + opc)));
    tcg_out_movi (s, TCG_TYPE_I64, 5, mem_index);

    tcg_out_call (s, (tcg_target_long) qemu_st_helpers[opc], 1);

    label2_ptr = s->code_ptr;
    tcg_out32 (s, B);

    /* label1: fast path */
#ifdef FAST_PATH
    reloc_pc14 (label1_ptr, (tcg_target_long) s->code_ptr);
#endif

    tcg_out32 (s, (LD_ADDEND
                   | RT (r0)
                   | RA (r0)
                   | (offsetof (CPUTLBEntry, addend)
                      - offsetof (CPUTLBEntry, addr_write))
                   ));
    /* r0 = env->tlb_table[mem_index][index].addend */
    tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (addr_reg));
    /* r0 = env->tlb_table[mem_index][index].addend + addr */

#else  /* !CONFIG_SOFTMMU */
#if TARGET_LONG_BITS == 32
    tcg_out_rld (s, RLDICL, addr_reg, addr_reg, 0, 32);
#endif
    r1 = 3;
    r0 = addr_reg;
#endif

#ifdef TARGET_WORDS_BIGENDIAN
    bswap = 0;
#else
    bswap = 1;
#endif
    switch (opc) {
    case 0:
        tcg_out32 (s, STB | RS (data_reg) | RA (r0));
        break;
    case 1:
        if (bswap) tcg_out32 (s, STHBRX | RS (data_reg) | RA (0) | RB (r0));
        else tcg_out32 (s, STH | RS (data_reg) | RA (r0));
        break;
    case 2:
        if (bswap) tcg_out32 (s, STWBRX | RS (data_reg) | RA (0) | RB (r0));
        else tcg_out32 (s, STW | RS (data_reg) | RA (r0));
        break;
    case 3:
        if (bswap) {
            tcg_out32 (s, STWBRX | RS (data_reg) | RA (0) | RB (r0));
            tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4);
            tcg_out_rld (s, RLDICL, 0, data_reg, 32, 0);
            tcg_out32 (s, STWBRX | RS (0) | RA (0) | RB (r1));
        }
        else tcg_out32 (s, STD | RS (data_reg) | RA (r0));
        break;
    }

#ifdef CONFIG_SOFTMMU
    reloc_pc24 (label2_ptr, (tcg_target_long) s->code_ptr);
#endif
}

void tcg_target_qemu_prologue (TCGContext *s)
{
    int i, frame_size;
    uint64_t addr;

    frame_size = 0
        + 8                     /* back chain */
        + 8                     /* CR */
        + 8                     /* LR */
        + 8                     /* compiler doubleword */
        + 8                     /* link editor doubleword */
        + 8                     /* TOC save area */
        + TCG_STATIC_CALL_ARGS_SIZE
        + ARRAY_SIZE (tcg_target_callee_save_regs) * 8
        ;
    frame_size = (frame_size + 15) & ~15;

    /* First emit adhoc function descriptor */
    addr = (uint64_t) s->code_ptr + 24;
    tcg_out32 (s, addr >> 32); tcg_out32 (s, addr); /* entry point */
    s->code_ptr += 16;          /* skip TOC and environment pointer */

    /* Prologue */
    tcg_out32 (s, MFSPR | RT (0) | LR);
    tcg_out32 (s, STDU | RS (1) | RA (1) | (-frame_size & 0xffff));
    for (i = 0; i < ARRAY_SIZE (tcg_target_callee_save_regs); ++i)
        tcg_out32 (s, (STD
                       | RS (tcg_target_callee_save_regs[i])
                       | RA (1)
                       | (i * 8 + 48 + TCG_STATIC_CALL_ARGS_SIZE)
                       )
            );
    tcg_out32 (s, STD | RS (0) | RA (1) | (frame_size + 16));

    tcg_out32 (s, MTSPR | RS (3) | CTR);
    tcg_out32 (s, BCCTR | BO_ALWAYS);

    /* Epilogue */
    tb_ret_addr = s->code_ptr;

    for (i = 0; i < ARRAY_SIZE (tcg_target_callee_save_regs); ++i)
        tcg_out32 (s, (LD
                       | RT (tcg_target_callee_save_regs[i])
                       | RA (1)
                       | (i * 8 + 48 + TCG_STATIC_CALL_ARGS_SIZE)
                       )
            );
    tcg_out32 (s, LD | RT (0) | RA (1) | (frame_size + 16));
    tcg_out32 (s, MTSPR | RS (0) | LR);
    tcg_out32 (s, ADDI | RT (1) | RA (1) | frame_size);
    tcg_out32 (s, BCLR | BO_ALWAYS);
}

static void tcg_out_ld (TCGContext *s, TCGType type, int ret, int arg1,
                        tcg_target_long arg2)
{
    if (type == TCG_TYPE_I32)
        tcg_out_ldst (s, ret, arg1, arg2, LWZ, LWZX);
    else
        tcg_out_ldsta (s, ret, arg1, arg2, LD, LDX);
}

static void tcg_out_st (TCGContext *s, TCGType type, int arg, int arg1,
                        tcg_target_long arg2)
{
    if (type == TCG_TYPE_I32)
        tcg_out_ldst (s, arg, arg1, arg2, STW, STWX);
    else
        tcg_out_ldsta (s, arg, arg1, arg2, STD, STDX);
}

static void ppc_addi32 (TCGContext *s, int rt, int ra, tcg_target_long si)
{
    if (!si && rt == ra)
        return;

    if (si == (int16_t) si)
        tcg_out32 (s, ADDI | RT (rt) | RA (ra) | (si & 0xffff));
    else {
        uint16_t h = ((si >> 16) & 0xffff) + ((uint16_t) si >> 15);
        tcg_out32 (s, ADDIS | RT (rt) | RA (ra) | h);
        tcg_out32 (s, ADDI | RT (rt) | RA (rt) | (si & 0xffff));
    }
}

static void ppc_addi64 (TCGContext *s, int rt, int ra, tcg_target_long si)
{
    /* XXX: suboptimal */
    if (si == (int16_t) si
        || ((((uint64_t) si >> 31) == 0) && (si & 0x8000) == 0))
        ppc_addi32 (s, rt, ra, si);
    else {
        tcg_out_movi (s, TCG_TYPE_I64, 0, si);
        tcg_out32 (s, ADD | RT (rt) | RA (ra));
    }
}

static void tcg_out_addi (TCGContext *s, int reg, tcg_target_long val)
{
    ppc_addi64 (s, reg, reg, val);
}

static void tcg_out_cmp (TCGContext *s, int cond, TCGArg arg1, TCGArg arg2,
                         int const_arg2, int cr, int arch64)
{
    int imm;
    uint32_t op;

    switch (cond) {
    case TCG_COND_EQ:
    case TCG_COND_NE:
        if (const_arg2) {
            if ((int16_t) arg2 == arg2) {
                op = CMPI;
                imm = 1;
                break;
            }
            else if ((uint16_t) arg2 == arg2) {
                op = CMPLI;
                imm = 1;
                break;
            }
        }
        op = CMPL;
        imm = 0;
        break;

    case TCG_COND_LT:
    case TCG_COND_GE:
    case TCG_COND_LE:
    case TCG_COND_GT:
        if (const_arg2) {
            if ((int16_t) arg2 == arg2) {
                op = CMPI;
                imm = 1;
                break;
            }
        }
        op = CMP;
        imm = 0;
        break;

    case TCG_COND_LTU:
    case TCG_COND_GEU:
    case TCG_COND_LEU:
    case TCG_COND_GTU:
        if (const_arg2) {
            if ((uint16_t) arg2 == arg2) {
                op = CMPLI;
                imm = 1;
                break;
            }
        }
        op = CMPL;
        imm = 0;
        break;

    default:
        tcg_abort ();
    }
    op |= BF (cr) | (arch64 << 21);

    if (imm)
        tcg_out32 (s, op | RA (arg1) | (arg2 & 0xffff));
    else {
        if (const_arg2) {
            tcg_out_movi (s, TCG_TYPE_I64, 0, arg2);
            tcg_out32 (s, op | RA (arg1) | RB (0));
        }
        else
            tcg_out32 (s, op | RA (arg1) | RB (arg2));
    }

}

static void tcg_out_bc (TCGContext *s, int bc, int label_index)
{
    TCGLabel *l = &s->labels[label_index];

    if (l->has_value)
        tcg_out32 (s, bc | reloc_pc14_val (s->code_ptr, l->u.value));
    else {
        uint16_t val = *(uint16_t *) &s->code_ptr[2];

        /* Thanks to Andrzej Zaborowski */
        tcg_out32 (s, bc | (val & 0xfffc));
        tcg_out_reloc (s, s->code_ptr - 4, R_PPC_REL14, label_index, 0);
    }
}

static void tcg_out_brcond (TCGContext *s, int cond,
                            TCGArg arg1, TCGArg arg2, int const_arg2,
                            int label_index, int arch64)
{
    tcg_out_cmp (s, cond, arg1, arg2, const_arg2, 7, arch64);
    tcg_out_bc (s, tcg_to_bc[cond], label_index);
}

void ppc_tb_set_jmp_target (unsigned long jmp_addr, unsigned long addr)
{
    TCGContext s;
    unsigned long patch_size;

    s.code_ptr = (uint8_t *) jmp_addr;
    tcg_out_b (&s, 0, addr);
    patch_size = s.code_ptr - (uint8_t *) jmp_addr;
    flush_icache_range (jmp_addr, jmp_addr + patch_size);
}

static void tcg_out_op (TCGContext *s, int opc, const TCGArg *args,
                        const int *const_args)
{
    int c;

    switch (opc) {
    case INDEX_op_exit_tb:
        tcg_out_movi (s, TCG_TYPE_I64, TCG_REG_R3, args[0]);
        tcg_out_b (s, 0, (tcg_target_long) tb_ret_addr);
        break;
    case INDEX_op_goto_tb:
        if (s->tb_jmp_offset) {
            /* direct jump method */

            s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
            s->code_ptr += 28;
        }
        else {
            tcg_abort ();
        }
        s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
        break;
    case INDEX_op_br:
        {
            TCGLabel *l = &s->labels[args[0]];

            if (l->has_value) {
                tcg_out_b (s, 0, l->u.value);
            }
            else {
                uint32_t val = *(uint32_t *) s->code_ptr;

                /* Thanks to Andrzej Zaborowski */
                tcg_out32 (s, B | (val & 0x3fffffc));
                tcg_out_reloc (s, s->code_ptr - 4, R_PPC_REL24, args[0], 0);
            }
        }
        break;
    case INDEX_op_call:
        tcg_out_call (s, args[0], const_args[0]);
        break;
    case INDEX_op_jmp:
        if (const_args[0]) {
            tcg_out_b (s, 0, args[0]);
        }
        else {
            tcg_out32 (s, MTSPR | RS (args[0]) | CTR);
            tcg_out32 (s, BCCTR | BO_ALWAYS);
        }
        break;
    case INDEX_op_movi_i32:
        tcg_out_movi (s, TCG_TYPE_I32, args[0], args[1]);
        break;
    case INDEX_op_movi_i64:
        tcg_out_movi (s, TCG_TYPE_I64, args[0], args[1]);
        break;
    case INDEX_op_ld8u_i32:
    case INDEX_op_ld8u_i64:
        tcg_out_ldst (s, args[0], args[1], args[2], LBZ, LBZX);
        break;
    case INDEX_op_ld8s_i32:
    case INDEX_op_ld8s_i64:
        tcg_out_ldst (s, args[0], args[1], args[2], LBZ, LBZX);
        tcg_out32 (s, EXTSB | RS (args[0]) | RA (args[0]));
        break;
    case INDEX_op_ld16u_i32:
    case INDEX_op_ld16u_i64:
        tcg_out_ldst (s, args[0], args[1], args[2], LHZ, LHZX);
        break;
    case INDEX_op_ld16s_i32:
    case INDEX_op_ld16s_i64:
        tcg_out_ldst (s, args[0], args[1], args[2], LHA, LHAX);
        break;
    case INDEX_op_ld_i32:
    case INDEX_op_ld32u_i64:
        tcg_out_ldst (s, args[0], args[1], args[2], LWZ, LWZX);
        break;
    case INDEX_op_ld32s_i64:
        tcg_out_ldsta (s, args[0], args[1], args[2], LWA, LWAX);
        break;
    case INDEX_op_ld_i64:
        tcg_out_ldsta (s, args[0], args[1], args[2], LD, LDX);
        break;
    case INDEX_op_st8_i32:
    case INDEX_op_st8_i64:
        tcg_out_ldst (s, args[0], args[1], args[2], STB, STBX);
        break;
    case INDEX_op_st16_i32:
    case INDEX_op_st16_i64:
        tcg_out_ldst (s, args[0], args[1], args[2], STH, STHX);
        break;
    case INDEX_op_st_i32:
    case INDEX_op_st32_i64:
        tcg_out_ldst (s, args[0], args[1], args[2], STW, STWX);
        break;
    case INDEX_op_st_i64:
        tcg_out_ldsta (s, args[0], args[1], args[2], STD, STDX);
        break;

    case INDEX_op_add_i32:
        if (const_args[2])
            ppc_addi32 (s, args[0], args[1], args[2]);
        else
            tcg_out32 (s, ADD | TAB (args[0], args[1], args[2]));
        break;
    case INDEX_op_sub_i32:
        if (const_args[2])
            ppc_addi32 (s, args[0], args[1], -args[2]);
        else
            tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1]));
        break;

    case INDEX_op_and_i64:
    case INDEX_op_and_i32:
        if (const_args[2]) {
            if ((args[2] & 0xffff) == args[2])
                tcg_out32 (s, ANDI | RS (args[1]) | RA (args[0]) | args[2]);
            else if ((args[2] & 0xffff0000) == args[2])
                tcg_out32 (s, ANDIS | RS (args[1]) | RA (args[0])
                           | ((args[2] >> 16) & 0xffff));
            else {
                tcg_out_movi (s, (opc == INDEX_op_and_i32
                                  ? TCG_TYPE_I32
                                  : TCG_TYPE_I64),
                              0, args[2]);
                tcg_out32 (s, AND | SAB (args[1], args[0], 0));
            }
        }
        else
            tcg_out32 (s, AND | SAB (args[1], args[0], args[2]));
        break;
    case INDEX_op_or_i64:
    case INDEX_op_or_i32:
        if (const_args[2]) {
            if (args[2] & 0xffff) {
                tcg_out32 (s, ORI | RS (args[1]) | RA (args[0])
                           | (args[2] & 0xffff));
                if (args[2] >> 16)
                    tcg_out32 (s, ORIS | RS (args[0])  | RA (args[0])
                               | ((args[2] >> 16) & 0xffff));
            }
            else {
                tcg_out32 (s, ORIS | RS (args[1])  | RA (args[0])
                           | ((args[2] >> 16) & 0xffff));
            }
        }
        else
            tcg_out32 (s, OR | SAB (args[1], args[0], args[2]));
        break;
    case INDEX_op_xor_i64:
    case INDEX_op_xor_i32:
        if (const_args[2]) {
            if ((args[2] & 0xffff) == args[2])
                tcg_out32 (s, XORI | RS (args[1])  | RA (args[0])
                           | (args[2] & 0xffff));
            else if ((args[2] & 0xffff0000) == args[2])
                tcg_out32 (s, XORIS | RS (args[1])  | RA (args[0])
                           | ((args[2] >> 16) & 0xffff));
            else {
                tcg_out_movi (s, (opc == INDEX_op_and_i32
                                  ? TCG_TYPE_I32
                                  : TCG_TYPE_I64),
                              0, args[2]);
                tcg_out32 (s, XOR | SAB (args[1], args[0], 0));
            }
        }
        else
            tcg_out32 (s, XOR | SAB (args[1], args[0], args[2]));
        break;

    case INDEX_op_mul_i32:
        if (const_args[2]) {
            if (args[2] == (int16_t) args[2])
                tcg_out32 (s, MULLI | RT (args[0]) | RA (args[1])
                           | (args[2] & 0xffff));
            else {
                tcg_out_movi (s, TCG_TYPE_I32, 0, args[2]);
                tcg_out32 (s, MULLW | TAB (args[0], args[1], 0));
            }
        }
        else
            tcg_out32 (s, MULLW | TAB (args[0], args[1], args[2]));
        break;

    case INDEX_op_div_i32:
        tcg_out32 (s, DIVW | TAB (args[0], args[1], args[2]));
        break;

    case INDEX_op_divu_i32:
        tcg_out32 (s, DIVWU | TAB (args[0], args[1], args[2]));
        break;

    case INDEX_op_rem_i32:
        tcg_out32 (s, DIVW | TAB (0, args[1], args[2]));
        tcg_out32 (s, MULLW | TAB (0, 0, args[2]));
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
        break;

    case INDEX_op_remu_i32:
        tcg_out32 (s, DIVWU | TAB (0, args[1], args[2]));
        tcg_out32 (s, MULLW | TAB (0, 0, args[2]));
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
        break;

    case INDEX_op_shl_i32:
        if (const_args[2]) {
            tcg_out32 (s, (RLWINM
                           | RA (args[0])
                           | RS (args[1])
                           | SH (args[2])
                           | MB (0)
                           | ME (31 - args[2])
                           )
                );
        }
        else
            tcg_out32 (s, SLW | SAB (args[1], args[0], args[2]));
        break;
    case INDEX_op_shr_i32:
        if (const_args[2]) {
            tcg_out32 (s, (RLWINM
                           | RA (args[0])
                           | RS (args[1])
                           | SH (32 - args[2])
                           | MB (args[2])
                           | ME (31)
                           )
                );
        }
        else
            tcg_out32 (s, SRW | SAB (args[1], args[0], args[2]));
        break;
    case INDEX_op_sar_i32:
        if (const_args[2])
            tcg_out32 (s, SRAWI | RS (args[1]) | RA (args[0]) | SH (args[2]));
        else
            tcg_out32 (s, SRAW | SAB (args[1], args[0], args[2]));
        break;

    case INDEX_op_brcond_i32:
        tcg_out_brcond (s, args[2], args[0], args[1], const_args[1], args[3], 0);
        break;

    case INDEX_op_brcond_i64:
        tcg_out_brcond (s, args[2], args[0], args[1], const_args[1], args[3], 1);
        break;

    case INDEX_op_neg_i32:
    case INDEX_op_neg_i64:
        tcg_out32 (s, NEG | RT (args[0]) | RA (args[1]));
        break;

    case INDEX_op_add_i64:
        if (const_args[2])
            ppc_addi64 (s, args[0], args[1], args[2]);
        else
            tcg_out32 (s, ADD | TAB (args[0], args[1], args[2]));
        break;
    case INDEX_op_sub_i64:
        if (const_args[2])
            ppc_addi64 (s, args[0], args[1], -args[2]);
        else
            tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1]));
        break;

    case INDEX_op_shl_i64:
        if (const_args[2])
            tcg_out_rld (s, RLDICR, args[0], args[1], args[2], 63 - args[2]);
        else
            tcg_out32 (s, SLD | SAB (args[1], args[0], args[2]));
        break;
    case INDEX_op_shr_i64:
        if (const_args[2])
            tcg_out_rld (s, RLDICL, args[0], args[1], 64 - args[2], args[2]);
        else
            tcg_out32 (s, SRD | SAB (args[1], args[0], args[2]));
        break;
    case INDEX_op_sar_i64:
        if (const_args[2]) {
            int sh = SH (args[2] & 0x1f) | (((args[2] >> 5) & 1) << 1);
            tcg_out32 (s, SRADI | RA (args[0]) | RS (args[1]) | sh);
        }
        else
            tcg_out32 (s, SRAD | SAB (args[1], args[0], args[2]));
        break;

    case INDEX_op_mul_i64:
        tcg_out32 (s, MULLD | TAB (args[0], args[1], args[2]));
        break;
    case INDEX_op_div_i64:
        tcg_out32 (s, DIVD | TAB (args[0], args[1], args[2]));
        break;
    case INDEX_op_divu_i64:
        tcg_out32 (s, DIVDU | TAB (args[0], args[1], args[2]));
        break;
    case INDEX_op_rem_i64:
        tcg_out32 (s, DIVD | TAB (0, args[1], args[2]));
        tcg_out32 (s, MULLD | TAB (0, 0, args[2]));
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
        break;
    case INDEX_op_remu_i64:
        tcg_out32 (s, DIVDU | TAB (0, args[1], args[2]));
        tcg_out32 (s, MULLD | TAB (0, 0, args[2]));
        tcg_out32 (s, SUBF | TAB (args[0], 0, args[1]));
        break;

    case INDEX_op_qemu_ld8u:
        tcg_out_qemu_ld (s, args, 0);
        break;
    case INDEX_op_qemu_ld8s:
        tcg_out_qemu_ld (s, args, 0 | 4);
        break;
    case INDEX_op_qemu_ld16u:
        tcg_out_qemu_ld (s, args, 1);
        break;
    case INDEX_op_qemu_ld16s:
        tcg_out_qemu_ld (s, args, 1 | 4);
        break;
    case INDEX_op_qemu_ld32u:
        tcg_out_qemu_ld (s, args, 2);
        break;
    case INDEX_op_qemu_ld32s:
        tcg_out_qemu_ld (s, args, 2 | 4);
        break;
    case INDEX_op_qemu_ld64:
        tcg_out_qemu_ld (s, args, 3);
        break;
    case INDEX_op_qemu_st8:
        tcg_out_qemu_st (s, args, 0);
        break;
    case INDEX_op_qemu_st16:
        tcg_out_qemu_st (s, args, 1);
        break;
    case INDEX_op_qemu_st32:
        tcg_out_qemu_st (s, args, 2);
        break;
    case INDEX_op_qemu_st64:
        tcg_out_qemu_st (s, args, 3);
        break;

    case INDEX_op_ext8s_i32:
    case INDEX_op_ext8s_i64:
        c = EXTSB;
        goto gen_ext;
    case INDEX_op_ext16s_i32:
    case INDEX_op_ext16s_i64:
        c = EXTSH;
        goto gen_ext;
    case INDEX_op_ext32s_i64:
        c = EXTSW;
        goto gen_ext;
    gen_ext:
        tcg_out32 (s, c | RS (args[1]) | RA (args[0]));
        break;

    default:
        tcg_dump_ops (s, stderr);
        tcg_abort ();
    }
}

static const TCGTargetOpDef ppc_op_defs[] = {
    { INDEX_op_exit_tb, { } },
    { INDEX_op_goto_tb, { } },
    { INDEX_op_call, { "ri" } },
    { INDEX_op_jmp, { "ri" } },
    { INDEX_op_br, { } },

    { INDEX_op_mov_i32, { "r", "r" } },
    { INDEX_op_mov_i64, { "r", "r" } },
    { INDEX_op_movi_i32, { "r" } },
    { INDEX_op_movi_i64, { "r" } },

    { INDEX_op_ld8u_i32, { "r", "r" } },
    { INDEX_op_ld8s_i32, { "r", "r" } },
    { INDEX_op_ld16u_i32, { "r", "r" } },
    { INDEX_op_ld16s_i32, { "r", "r" } },
    { INDEX_op_ld_i32, { "r", "r" } },
    { INDEX_op_ld_i64, { "r", "r" } },
    { INDEX_op_st8_i32, { "r", "r" } },
    { INDEX_op_st8_i64, { "r", "r" } },
    { INDEX_op_st16_i32, { "r", "r" } },
    { INDEX_op_st16_i64, { "r", "r" } },
    { INDEX_op_st_i32, { "r", "r" } },
    { INDEX_op_st_i64, { "r", "r" } },
    { INDEX_op_st32_i64, { "r", "r" } },

    { INDEX_op_ld8u_i64, { "r", "r" } },
    { INDEX_op_ld8s_i64, { "r", "r" } },
    { INDEX_op_ld16u_i64, { "r", "r" } },
    { INDEX_op_ld16s_i64, { "r", "r" } },
    { INDEX_op_ld32u_i64, { "r", "r" } },
    { INDEX_op_ld32s_i64, { "r", "r" } },
    { INDEX_op_ld_i64, { "r", "r" } },

    { INDEX_op_add_i32, { "r", "r", "ri" } },
    { INDEX_op_mul_i32, { "r", "r", "ri" } },
    { INDEX_op_div_i32, { "r", "r", "r" } },
    { INDEX_op_divu_i32, { "r", "r", "r" } },
    { INDEX_op_rem_i32, { "r", "r", "r" } },
    { INDEX_op_remu_i32, { "r", "r", "r" } },
    { INDEX_op_sub_i32, { "r", "r", "ri" } },
    { INDEX_op_and_i32, { "r", "r", "ri" } },
    { INDEX_op_or_i32, { "r", "r", "ri" } },
    { INDEX_op_xor_i32, { "r", "r", "ri" } },

    { INDEX_op_shl_i32, { "r", "r", "ri" } },
    { INDEX_op_shr_i32, { "r", "r", "ri" } },
    { INDEX_op_sar_i32, { "r", "r", "ri" } },

    { INDEX_op_brcond_i32, { "r", "ri" } },
    { INDEX_op_brcond_i64, { "r", "ri" } },

    { INDEX_op_neg_i32, { "r", "r" } },

    { INDEX_op_add_i64, { "r", "r", "ri" } },
    { INDEX_op_sub_i64, { "r", "r", "ri" } },
    { INDEX_op_and_i64, { "r", "r", "rZ" } },
    { INDEX_op_or_i64, { "r", "r", "rZ" } },
    { INDEX_op_xor_i64, { "r", "r", "rZ" } },

    { INDEX_op_shl_i64, { "r", "r", "ri" } },
    { INDEX_op_shr_i64, { "r", "r", "ri" } },
    { INDEX_op_sar_i64, { "r", "r", "ri" } },

    { INDEX_op_mul_i64, { "r", "r", "r" } },
    { INDEX_op_div_i64, { "r", "r", "r" } },
    { INDEX_op_divu_i64, { "r", "r", "r" } },
    { INDEX_op_rem_i64, { "r", "r", "r" } },
    { INDEX_op_remu_i64, { "r", "r", "r" } },

    { INDEX_op_neg_i64, { "r", "r" } },

    { INDEX_op_qemu_ld8u, { "r", "L" } },
    { INDEX_op_qemu_ld8s, { "r", "L" } },
    { INDEX_op_qemu_ld16u, { "r", "L" } },
    { INDEX_op_qemu_ld16s, { "r", "L" } },
    { INDEX_op_qemu_ld32u, { "r", "L" } },
    { INDEX_op_qemu_ld32s, { "r", "L" } },
    { INDEX_op_qemu_ld64, { "r", "L" } },

    { INDEX_op_qemu_st8, { "S", "S" } },
    { INDEX_op_qemu_st16, { "S", "S" } },
    { INDEX_op_qemu_st32, { "S", "S" } },
    { INDEX_op_qemu_st64, { "S", "S", "S" } },

    { INDEX_op_ext8s_i32, { "r", "r" } },
    { INDEX_op_ext16s_i32, { "r", "r" } },
    { INDEX_op_ext8s_i64, { "r", "r" } },
    { INDEX_op_ext16s_i64, { "r", "r" } },
    { INDEX_op_ext32s_i64, { "r", "r" } },

    { -1 },
};

void tcg_target_init (TCGContext *s)
{
    tcg_regset_set32 (tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffffffff);
    tcg_regset_set32 (tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffffffff);
    tcg_regset_set32 (tcg_target_call_clobber_regs, 0,
                     (1 << TCG_REG_R0) |
                     (1 << TCG_REG_R3) |
                     (1 << TCG_REG_R4) |
                     (1 << TCG_REG_R5) |
                     (1 << TCG_REG_R6) |
                     (1 << TCG_REG_R7) |
                     (1 << TCG_REG_R8) |
                     (1 << TCG_REG_R9) |
                     (1 << TCG_REG_R10) |
                     (1 << TCG_REG_R11) |
                     (1 << TCG_REG_R12)
        );

    tcg_regset_clear (s->reserved_regs);
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R0);
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R1);
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R2);
    tcg_regset_set_reg (s->reserved_regs, TCG_REG_R13);

    tcg_add_target_add_op_defs (ppc_op_defs);
}