auto import from //depot/cupcake/@135843

1 files changed, 0 insertions, 1185 deletions

diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c
deleted file mode 100644
index 08bb783..0000000
--- a/tcg/i386/tcg-target.c
+++ /dev/null
@@ -1,1185 +0,0 @@
-/*
- * 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.
- */
-const char *tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
-    "%eax",
-    "%ecx",
-    "%edx",
-    "%ebx",
-    "%esp",
-    "%ebp",
-    "%esi",
-    "%edi",
-};
-
-int tcg_target_reg_alloc_order[] = {
-    TCG_REG_EAX,
-    TCG_REG_EDX,
-    TCG_REG_ECX,
-    TCG_REG_EBX,
-    TCG_REG_ESI,
-    TCG_REG_EDI,
-    TCG_REG_EBP,
-};
-
-const int tcg_target_call_iarg_regs[3] = { TCG_REG_EAX, TCG_REG_EDX, TCG_REG_ECX };
-const int tcg_target_call_oarg_regs[2] = { TCG_REG_EAX, TCG_REG_EDX };
-
-static uint8_t *tb_ret_addr;
-
-static void patch_reloc(uint8_t *code_ptr, int type, 
-                        tcg_target_long value, tcg_target_long addend)
-{
-    value += addend;
-    switch(type) {
-    case R_386_32:
-        *(uint32_t *)code_ptr = value;
-        break;
-    case R_386_PC32:
-        *(uint32_t *)code_ptr = value - (long)code_ptr;
-        break;
-    default:
-        tcg_abort();
-    }
-}
-
-/* maximum number of register used for input function arguments */
-static inline int tcg_target_get_call_iarg_regs_count(int flags)
-{
-    flags &= TCG_CALL_TYPE_MASK;
-    switch(flags) {
-    case TCG_CALL_TYPE_STD:
-        return 0;
-    case TCG_CALL_TYPE_REGPARM_1:
-    case TCG_CALL_TYPE_REGPARM_2:
-    case TCG_CALL_TYPE_REGPARM:
-        return flags - TCG_CALL_TYPE_REGPARM_1 + 1;
-    default:
-        tcg_abort();
-    }
-}
-
-/* parse target specific constraints */
-int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
-{
-    const char *ct_str;
-
-    ct_str = *pct_str;
-    switch(ct_str[0]) {
-    case 'a':
-        ct->ct |= TCG_CT_REG;
-        tcg_regset_set_reg(ct->u.regs, TCG_REG_EAX);
-        break;
-    case 'b':
-        ct->ct |= TCG_CT_REG;
-        tcg_regset_set_reg(ct->u.regs, TCG_REG_EBX);
-        break;
-    case 'c':
-        ct->ct |= TCG_CT_REG;
-        tcg_regset_set_reg(ct->u.regs, TCG_REG_ECX);
-        break;
-    case 'd':
-        ct->ct |= TCG_CT_REG;
-        tcg_regset_set_reg(ct->u.regs, TCG_REG_EDX);
-        break;
-    case 'S':
-        ct->ct |= TCG_CT_REG;
-        tcg_regset_set_reg(ct->u.regs, TCG_REG_ESI);
-        break;
-    case 'D':
-        ct->ct |= TCG_CT_REG;
-        tcg_regset_set_reg(ct->u.regs, TCG_REG_EDI);
-        break;
-    case 'q':
-        ct->ct |= TCG_CT_REG;
-        tcg_regset_set32(ct->u.regs, 0, 0xf);
-        break;
-    case 'r':
-        ct->ct |= TCG_CT_REG;
-        tcg_regset_set32(ct->u.regs, 0, 0xff);
-        break;
-
-        /* qemu_ld/st address constraint */
-    case 'L':
-        ct->ct |= TCG_CT_REG;
-        tcg_regset_set32(ct->u.regs, 0, 0xff);
-        tcg_regset_reset_reg(ct->u.regs, TCG_REG_EAX);
-        tcg_regset_reset_reg(ct->u.regs, TCG_REG_EDX);
-        break;
-    default:
-        return -1;
-    }
-    ct_str++;
-    *pct_str = ct_str;
-    return 0;
-}
-
-/* test if a constant matches the constraint */
-static inline 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
-        return 0;
-}
-
-#define ARITH_ADD 0
-#define ARITH_OR  1
-#define ARITH_ADC 2
-#define ARITH_SBB 3
-#define ARITH_AND 4
-#define ARITH_SUB 5
-#define ARITH_XOR 6
-#define ARITH_CMP 7
-
-#define SHIFT_SHL 4
-#define SHIFT_SHR 5
-#define SHIFT_SAR 7
-
-#define JCC_JMP (-1)
-#define JCC_JO  0x0
-#define JCC_JNO 0x1
-#define JCC_JB  0x2
-#define JCC_JAE 0x3
-#define JCC_JE  0x4
-#define JCC_JNE 0x5
-#define JCC_JBE 0x6
-#define JCC_JA  0x7
-#define JCC_JS  0x8
-#define JCC_JNS 0x9
-#define JCC_JP  0xa
-#define JCC_JNP 0xb
-#define JCC_JL  0xc
-#define JCC_JGE 0xd
-#define JCC_JLE 0xe
-#define JCC_JG  0xf
-
-#define P_EXT   0x100 /* 0x0f opcode prefix */
-
-static const uint8_t tcg_cond_to_jcc[10] = {
-    [TCG_COND_EQ] = JCC_JE,
-    [TCG_COND_NE] = JCC_JNE,
-    [TCG_COND_LT] = JCC_JL,
-    [TCG_COND_GE] = JCC_JGE,
-    [TCG_COND_LE] = JCC_JLE,
-    [TCG_COND_GT] = JCC_JG,
-    [TCG_COND_LTU] = JCC_JB,
-    [TCG_COND_GEU] = JCC_JAE,
-    [TCG_COND_LEU] = JCC_JBE,
-    [TCG_COND_GTU] = JCC_JA,
-};
-
-static inline void tcg_out_opc(TCGContext *s, int opc)
-{
-    if (opc & P_EXT)
-        tcg_out8(s, 0x0f);
-    tcg_out8(s, opc);
-}
-
-static inline void tcg_out_modrm(TCGContext *s, int opc, int r, int rm)
-{
-    tcg_out_opc(s, opc);
-    tcg_out8(s, 0xc0 | (r << 3) | rm);
-}
-
-/* rm == -1 means no register index */
-static inline void tcg_out_modrm_offset(TCGContext *s, int opc, int r, int rm, 
-                                        int32_t offset)
-{
-    tcg_out_opc(s, opc);
-    if (rm == -1) {
-        tcg_out8(s, 0x05 | (r << 3));
-        tcg_out32(s, offset);
-    } else if (offset == 0 && rm != TCG_REG_EBP) {
-        if (rm == TCG_REG_ESP) {
-            tcg_out8(s, 0x04 | (r << 3));
-            tcg_out8(s, 0x24);
-        } else {
-            tcg_out8(s, 0x00 | (r << 3) | rm);
-        }
-    } else if ((int8_t)offset == offset) {
-        if (rm == TCG_REG_ESP) {
-            tcg_out8(s, 0x44 | (r << 3));
-            tcg_out8(s, 0x24);
-        } else {
-            tcg_out8(s, 0x40 | (r << 3) | rm);
-        }
-        tcg_out8(s, offset);
-    } else {
-        if (rm == TCG_REG_ESP) {
-            tcg_out8(s, 0x84 | (r << 3));
-            tcg_out8(s, 0x24);
-        } else {
-            tcg_out8(s, 0x80 | (r << 3) | rm);
-        }
-        tcg_out32(s, offset);
-    }
-}
-
-static inline void tcg_out_mov(TCGContext *s, int ret, int arg)
-{
-    if (arg != ret)
-        tcg_out_modrm(s, 0x8b, ret, arg);
-}
-
-static inline void tcg_out_movi(TCGContext *s, TCGType type,
-                                int ret, int32_t arg)
-{
-    if (arg == 0) {
-        /* xor r0,r0 */
-        tcg_out_modrm(s, 0x01 | (ARITH_XOR << 3), ret, ret);
-    } else {
-        tcg_out8(s, 0xb8 + ret);
-        tcg_out32(s, arg);
-    }
-}
-
-static inline void tcg_out_ld(TCGContext *s, TCGType type, int ret,
-                              int arg1, tcg_target_long arg2)
-{
-    /* movl */
-    tcg_out_modrm_offset(s, 0x8b, ret, arg1, arg2);
-}
-
-static inline void tcg_out_st(TCGContext *s, TCGType type, int arg,
-                              int arg1, tcg_target_long arg2)
-{
-    /* movl */
-    tcg_out_modrm_offset(s, 0x89, arg, arg1, arg2);
-}
-
-static inline void tgen_arithi(TCGContext *s, int c, int r0, int32_t val)
-{
-    if (val == (int8_t)val) {
-        tcg_out_modrm(s, 0x83, c, r0);
-        tcg_out8(s, val);
-    } else {
-        tcg_out_modrm(s, 0x81, c, r0);
-        tcg_out32(s, val);
-    }
-}
-
-void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val)
-{
-    if (val != 0)
-        tgen_arithi(s, ARITH_ADD, reg, val);
-}
-
-static void tcg_out_jxx(TCGContext *s, int opc, int label_index)
-{
-    int32_t val, val1;
-    TCGLabel *l = &s->labels[label_index];
-    
-    if (l->has_value) {
-        val = l->u.value - (tcg_target_long)s->code_ptr;
-        val1 = val - 2;
-        if ((int8_t)val1 == val1) {
-            if (opc == -1)
-                tcg_out8(s, 0xeb);
-            else
-                tcg_out8(s, 0x70 + opc);
-            tcg_out8(s, val1);
-        } else {
-            if (opc == -1) {
-                tcg_out8(s, 0xe9);
-                tcg_out32(s, val - 5);
-            } else {
-                tcg_out8(s, 0x0f);
-                tcg_out8(s, 0x80 + opc);
-                tcg_out32(s, val - 6);
-            }
-        }
-    } else {
-        if (opc == -1) {
-            tcg_out8(s, 0xe9);
-        } else {
-            tcg_out8(s, 0x0f);
-            tcg_out8(s, 0x80 + opc);
-        }
-        tcg_out_reloc(s, s->code_ptr, R_386_PC32, label_index, -4);
-        s->code_ptr += 4;
-    }
-}
-
-static void tcg_out_brcond(TCGContext *s, int cond, 
-                           TCGArg arg1, TCGArg arg2, int const_arg2,
-                           int label_index)
-{
-    if (const_arg2) {
-        if (arg2 == 0) {
-            /* test r, r */
-            tcg_out_modrm(s, 0x85, arg1, arg1);
-        } else {
-            tgen_arithi(s, ARITH_CMP, arg1, arg2);
-        }
-    } else {
-        tcg_out_modrm(s, 0x01 | (ARITH_CMP << 3), arg2, arg1);
-    }
-    tcg_out_jxx(s, tcg_cond_to_jcc[cond], label_index);
-}
-
-/* XXX: we implement it at the target level to avoid having to
-   handle cross basic blocks temporaries */
-static void tcg_out_brcond2(TCGContext *s,
-                            const TCGArg *args, const int *const_args)
-{
-    int label_next;
-    label_next = gen_new_label();
-    switch(args[4]) {
-    case TCG_COND_EQ:
-        tcg_out_brcond(s, TCG_COND_NE, args[0], args[2], const_args[2], label_next);
-        tcg_out_brcond(s, TCG_COND_EQ, args[1], args[3], const_args[3], args[5]);
-        break;
-    case TCG_COND_NE:
-        tcg_out_brcond(s, TCG_COND_NE, args[0], args[2], const_args[2], args[5]);
-        tcg_out_brcond(s, TCG_COND_NE, args[1], args[3], const_args[3], args[5]);
-        break;
-    case TCG_COND_LT:
-        tcg_out_brcond(s, TCG_COND_LT, args[1], args[3], const_args[3], args[5]);
-        tcg_out_jxx(s, JCC_JNE, label_next);
-        tcg_out_brcond(s, TCG_COND_LTU, args[0], args[2], const_args[2], args[5]);
-        break;
-    case TCG_COND_LE:
-        tcg_out_brcond(s, TCG_COND_LT, args[1], args[3], const_args[3], args[5]);
-        tcg_out_jxx(s, JCC_JNE, label_next);
-        tcg_out_brcond(s, TCG_COND_LEU, args[0], args[2], const_args[2], args[5]);
-        break;
-    case TCG_COND_GT:
-        tcg_out_brcond(s, TCG_COND_GT, args[1], args[3], const_args[3], args[5]);
-        tcg_out_jxx(s, JCC_JNE, label_next);
-        tcg_out_brcond(s, TCG_COND_GTU, args[0], args[2], const_args[2], args[5]);
-        break;
-    case TCG_COND_GE:
-        tcg_out_brcond(s, TCG_COND_GT, args[1], args[3], const_args[3], args[5]);
-        tcg_out_jxx(s, JCC_JNE, label_next);
-        tcg_out_brcond(s, TCG_COND_GEU, args[0], args[2], const_args[2], args[5]);
-        break;
-    case TCG_COND_LTU:
-        tcg_out_brcond(s, TCG_COND_LTU, args[1], args[3], const_args[3], args[5]);
-        tcg_out_jxx(s, JCC_JNE, label_next);
-        tcg_out_brcond(s, TCG_COND_LTU, args[0], args[2], const_args[2], args[5]);
-        break;
-    case TCG_COND_LEU:
-        tcg_out_brcond(s, TCG_COND_LTU, args[1], args[3], const_args[3], args[5]);
-        tcg_out_jxx(s, JCC_JNE, label_next);
-        tcg_out_brcond(s, TCG_COND_LEU, args[0], args[2], const_args[2], args[5]);
-        break;
-    case TCG_COND_GTU:
-        tcg_out_brcond(s, TCG_COND_GTU, args[1], args[3], const_args[3], args[5]);
-        tcg_out_jxx(s, JCC_JNE, label_next);
-        tcg_out_brcond(s, TCG_COND_GTU, args[0], args[2], const_args[2], args[5]);
-        break;
-    case TCG_COND_GEU:
-        tcg_out_brcond(s, TCG_COND_GTU, args[1], args[3], const_args[3], args[5]);
-        tcg_out_jxx(s, JCC_JNE, label_next);
-        tcg_out_brcond(s, TCG_COND_GEU, args[0], args[2], const_args[2], args[5]);
-        break;
-    default:
-        tcg_abort();
-    }
-    tcg_out_label(s, label_next, (tcg_target_long)s->code_ptr);
-}
-
-#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,
-};
-#endif
-
-/* XXX: qemu_ld and qemu_st could be modified to clobber only EDX and
-   EAX. It will be useful once fixed registers globals are less
-   common. */
-static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
-                            int opc)
-{
-    int addr_reg, data_reg, data_reg2, r0, r1, mem_index, s_bits, bswap;
-#if defined(CONFIG_SOFTMMU)
-    uint8_t *label1_ptr, *label2_ptr;
-#endif
-#if TARGET_LONG_BITS == 64
-#if defined(CONFIG_SOFTMMU)
-    uint8_t *label3_ptr;
-#endif
-    int addr_reg2;
-#endif
-
-    data_reg = *args++;
-    if (opc == 3)
-        data_reg2 = *args++;
-    else
-        data_reg2 = 0;
-    addr_reg = *args++;
-#if TARGET_LONG_BITS == 64
-    addr_reg2 = *args++;
-#endif
-    mem_index = *args;
-    s_bits = opc & 3;
-
-    r0 = TCG_REG_EAX;
-    r1 = TCG_REG_EDX;
-
-#if defined(CONFIG_SOFTMMU)
-    tcg_out_mov(s, r1, addr_reg); 
-
-    tcg_out_mov(s, r0, addr_reg); 
- 
-    tcg_out_modrm(s, 0xc1, 5, r1); /* shr $x, r1 */
-    tcg_out8(s, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); 
-    
-    tcg_out_modrm(s, 0x81, 4, r0); /* andl $x, r0 */
-    tcg_out32(s, TARGET_PAGE_MASK | ((1 << s_bits) - 1));
-    
-    tcg_out_modrm(s, 0x81, 4, r1); /* andl $x, r1 */
-    tcg_out32(s, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
-
-    tcg_out_opc(s, 0x8d); /* lea offset(r1, %ebp), r1 */
-    tcg_out8(s, 0x80 | (r1 << 3) | 0x04);
-    tcg_out8(s, (5 << 3) | r1);
-    tcg_out32(s, offsetof(CPUState, tlb_table[mem_index][0].addr_read));
-
-    /* cmp 0(r1), r0 */
-    tcg_out_modrm_offset(s, 0x3b, r0, r1, 0);
-    
-    tcg_out_mov(s, r0, addr_reg);
-    
-#if TARGET_LONG_BITS == 32
-    /* je label1 */
-    tcg_out8(s, 0x70 + JCC_JE);
-    label1_ptr = s->code_ptr;
-    s->code_ptr++;
-#else
-    /* jne label3 */
-    tcg_out8(s, 0x70 + JCC_JNE);
-    label3_ptr = s->code_ptr;
-    s->code_ptr++;
-    
-    /* cmp 4(r1), addr_reg2 */
-    tcg_out_modrm_offset(s, 0x3b, addr_reg2, r1, 4);
-
-    /* je label1 */
-    tcg_out8(s, 0x70 + JCC_JE);
-    label1_ptr = s->code_ptr;
-    s->code_ptr++;
-    
-    /* label3: */
-    *label3_ptr = s->code_ptr - label3_ptr - 1;
-#endif
-
-    /* XXX: move that code at the end of the TB */
-#if TARGET_LONG_BITS == 32
-    tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_EDX, mem_index);
-#else
-    tcg_out_mov(s, TCG_REG_EDX, addr_reg2);
-    tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_ECX, mem_index);
-#endif
-    tcg_out8(s, 0xe8);
-    tcg_out32(s, (tcg_target_long)qemu_ld_helpers[s_bits] - 
-              (tcg_target_long)s->code_ptr - 4);
-
-    switch(opc) {
-    case 0 | 4:
-        /* movsbl */
-        tcg_out_modrm(s, 0xbe | P_EXT, data_reg, TCG_REG_EAX);
-        break;
-    case 1 | 4:
-        /* movswl */
-        tcg_out_modrm(s, 0xbf | P_EXT, data_reg, TCG_REG_EAX);
-        break;
-    case 0:
-    case 1:
-    case 2:
-    default:
-        tcg_out_mov(s, data_reg, TCG_REG_EAX);
-        break;
-    case 3:
-        if (data_reg == TCG_REG_EDX) {
-            tcg_out_opc(s, 0x90 + TCG_REG_EDX); /* xchg %edx, %eax */
-            tcg_out_mov(s, data_reg2, TCG_REG_EAX);
-        } else {
-            tcg_out_mov(s, data_reg, TCG_REG_EAX);
-            tcg_out_mov(s, data_reg2, TCG_REG_EDX);
-        }
-        break;
-    }
-
-    /* jmp label2 */
-    tcg_out8(s, 0xeb);
-    label2_ptr = s->code_ptr;
-    s->code_ptr++;
-    
-    /* label1: */
-    *label1_ptr = s->code_ptr - label1_ptr - 1;
-
-    /* add x(r1), r0 */
-    tcg_out_modrm_offset(s, 0x03, r0, r1, offsetof(CPUTLBEntry, addend) - 
-                         offsetof(CPUTLBEntry, addr_read));
-#else
-    r0 = addr_reg;
-#endif
-
-#ifdef TARGET_WORDS_BIGENDIAN
-    bswap = 1;
-#else
-    bswap = 0;
-#endif
-    switch(opc) {
-    case 0:
-        /* movzbl */
-        tcg_out_modrm_offset(s, 0xb6 | P_EXT, data_reg, r0, 0);
-        break;
-    case 0 | 4:
-        /* movsbl */
-        tcg_out_modrm_offset(s, 0xbe | P_EXT, data_reg, r0, 0);
-        break;
-    case 1:
-        /* movzwl */
-        tcg_out_modrm_offset(s, 0xb7 | P_EXT, data_reg, r0, 0);
-        if (bswap) {
-            /* rolw $8, data_reg */
-            tcg_out8(s, 0x66); 
-            tcg_out_modrm(s, 0xc1, 0, data_reg);
-            tcg_out8(s, 8);
-        }
-        break;
-    case 1 | 4:
-        /* movswl */
-        tcg_out_modrm_offset(s, 0xbf | P_EXT, data_reg, r0, 0);
-        if (bswap) {
-            /* rolw $8, data_reg */
-            tcg_out8(s, 0x66); 
-            tcg_out_modrm(s, 0xc1, 0, data_reg);
-            tcg_out8(s, 8);
-
-            /* movswl data_reg, data_reg */
-            tcg_out_modrm(s, 0xbf | P_EXT, data_reg, data_reg);
-        }
-        break;
-    case 2:
-        /* movl (r0), data_reg */
-        tcg_out_modrm_offset(s, 0x8b, data_reg, r0, 0);
-        if (bswap) {
-            /* bswap */
-            tcg_out_opc(s, (0xc8 + data_reg) | P_EXT);
-        }
-        break;
-    case 3:
-        /* XXX: could be nicer */
-        if (r0 == data_reg) {
-            r1 = TCG_REG_EDX;
-            if (r1 == data_reg)
-                r1 = TCG_REG_EAX;
-            tcg_out_mov(s, r1, r0);
-            r0 = r1;
-        }
-        if (!bswap) {
-            tcg_out_modrm_offset(s, 0x8b, data_reg, r0, 0);
-            tcg_out_modrm_offset(s, 0x8b, data_reg2, r0, 4);
-        } else {
-            tcg_out_modrm_offset(s, 0x8b, data_reg, r0, 4);
-            tcg_out_opc(s, (0xc8 + data_reg) | P_EXT);
-
-            tcg_out_modrm_offset(s, 0x8b, data_reg2, r0, 0);
-            /* bswap */
-            tcg_out_opc(s, (0xc8 + data_reg2) | P_EXT);
-        }
-        break;
-    default:
-        tcg_abort();
-    }
-
-#if defined(CONFIG_SOFTMMU)
-    /* label2: */
-    *label2_ptr = s->code_ptr - label2_ptr - 1;
-#endif
-}
-
-
-static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
-                            int opc)
-{
-    int addr_reg, data_reg, data_reg2, r0, r1, mem_index, s_bits, bswap;
-#if defined(CONFIG_SOFTMMU)
-    uint8_t *label1_ptr, *label2_ptr;
-#endif
-#if TARGET_LONG_BITS == 64
-#if defined(CONFIG_SOFTMMU)
-    uint8_t *label3_ptr;
-#endif
-    int addr_reg2;
-#endif
-
-    data_reg = *args++;
-    if (opc == 3)
-        data_reg2 = *args++;
-    else
-        data_reg2 = 0;
-    addr_reg = *args++;
-#if TARGET_LONG_BITS == 64
-    addr_reg2 = *args++;
-#endif
-    mem_index = *args;
-
-    s_bits = opc;
-
-    r0 = TCG_REG_EAX;
-    r1 = TCG_REG_EDX;
-
-#if defined(CONFIG_SOFTMMU)
-    tcg_out_mov(s, r1, addr_reg); 
-
-    tcg_out_mov(s, r0, addr_reg); 
- 
-    tcg_out_modrm(s, 0xc1, 5, r1); /* shr $x, r1 */
-    tcg_out8(s, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); 
-    
-    tcg_out_modrm(s, 0x81, 4, r0); /* andl $x, r0 */
-    tcg_out32(s, TARGET_PAGE_MASK | ((1 << s_bits) - 1));
-    
-    tcg_out_modrm(s, 0x81, 4, r1); /* andl $x, r1 */
-    tcg_out32(s, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
-
-    tcg_out_opc(s, 0x8d); /* lea offset(r1, %ebp), r1 */
-    tcg_out8(s, 0x80 | (r1 << 3) | 0x04);
-    tcg_out8(s, (5 << 3) | r1);
-    tcg_out32(s, offsetof(CPUState, tlb_table[mem_index][0].addr_write));
-
-    /* cmp 0(r1), r0 */
-    tcg_out_modrm_offset(s, 0x3b, r0, r1, 0);
-    
-    tcg_out_mov(s, r0, addr_reg);
-    
-#if TARGET_LONG_BITS == 32
-    /* je label1 */
-    tcg_out8(s, 0x70 + JCC_JE);
-    label1_ptr = s->code_ptr;
-    s->code_ptr++;
-#else
-    /* jne label3 */
-    tcg_out8(s, 0x70 + JCC_JNE);
-    label3_ptr = s->code_ptr;
-    s->code_ptr++;
-    
-    /* cmp 4(r1), addr_reg2 */
-    tcg_out_modrm_offset(s, 0x3b, addr_reg2, r1, 4);
-
-    /* je label1 */
-    tcg_out8(s, 0x70 + JCC_JE);
-    label1_ptr = s->code_ptr;
-    s->code_ptr++;
-    
-    /* label3: */
-    *label3_ptr = s->code_ptr - label3_ptr - 1;
-#endif
-
-    /* XXX: move that code at the end of the TB */
-#if TARGET_LONG_BITS == 32
-    if (opc == 3) {
-        tcg_out_mov(s, TCG_REG_EDX, data_reg);
-        tcg_out_mov(s, TCG_REG_ECX, data_reg2);
-        tcg_out8(s, 0x6a); /* push Ib */
-        tcg_out8(s, mem_index);
-        tcg_out8(s, 0xe8);
-        tcg_out32(s, (tcg_target_long)qemu_st_helpers[s_bits] - 
-                  (tcg_target_long)s->code_ptr - 4);
-        tcg_out_addi(s, TCG_REG_ESP, 4);
-    } else {
-        switch(opc) {
-        case 0:
-            /* movzbl */
-            tcg_out_modrm(s, 0xb6 | P_EXT, TCG_REG_EDX, data_reg);
-            break;
-        case 1:
-            /* movzwl */
-            tcg_out_modrm(s, 0xb7 | P_EXT, TCG_REG_EDX, data_reg);
-            break;
-        case 2:
-            tcg_out_mov(s, TCG_REG_EDX, data_reg);
-            break;
-        }
-        tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_ECX, mem_index);
-        tcg_out8(s, 0xe8);
-        tcg_out32(s, (tcg_target_long)qemu_st_helpers[s_bits] - 
-                  (tcg_target_long)s->code_ptr - 4);
-    }
-#else
-    if (opc == 3) {
-        tcg_out_mov(s, TCG_REG_EDX, addr_reg2);
-        tcg_out8(s, 0x6a); /* push Ib */
-        tcg_out8(s, mem_index);
-        tcg_out_opc(s, 0x50 + data_reg2); /* push */
-        tcg_out_opc(s, 0x50 + data_reg); /* push */
-        tcg_out8(s, 0xe8);
-        tcg_out32(s, (tcg_target_long)qemu_st_helpers[s_bits] - 
-                  (tcg_target_long)s->code_ptr - 4);
-        tcg_out_addi(s, TCG_REG_ESP, 12);
-    } else {
-        tcg_out_mov(s, TCG_REG_EDX, addr_reg2);
-        switch(opc) {
-        case 0:
-            /* movzbl */
-            tcg_out_modrm(s, 0xb6 | P_EXT, TCG_REG_ECX, data_reg);
-            break;
-        case 1:
-            /* movzwl */
-            tcg_out_modrm(s, 0xb7 | P_EXT, TCG_REG_ECX, data_reg);
-            break;
-        case 2:
-            tcg_out_mov(s, TCG_REG_ECX, data_reg);
-            break;
-        }
-        tcg_out8(s, 0x6a); /* push Ib */
-        tcg_out8(s, mem_index);
-        tcg_out8(s, 0xe8);
-        tcg_out32(s, (tcg_target_long)qemu_st_helpers[s_bits] - 
-                  (tcg_target_long)s->code_ptr - 4);
-        tcg_out_addi(s, TCG_REG_ESP, 4);
-    }
-#endif
-    
-    /* jmp label2 */
-    tcg_out8(s, 0xeb);
-    label2_ptr = s->code_ptr;
-    s->code_ptr++;
-    
-    /* label1: */
-    *label1_ptr = s->code_ptr - label1_ptr - 1;
-
-    /* add x(r1), r0 */
-    tcg_out_modrm_offset(s, 0x03, r0, r1, offsetof(CPUTLBEntry, addend) - 
-                         offsetof(CPUTLBEntry, addr_write));
-#else
-    r0 = addr_reg;
-#endif
-
-#ifdef TARGET_WORDS_BIGENDIAN
-    bswap = 1;
-#else
-    bswap = 0;
-#endif
-    switch(opc) {
-    case 0:
-        /* movb */
-        tcg_out_modrm_offset(s, 0x88, data_reg, r0, 0);
-        break;
-    case 1:
-        if (bswap) {
-            tcg_out_mov(s, r1, data_reg);
-            tcg_out8(s, 0x66); /* rolw $8, %ecx */
-            tcg_out_modrm(s, 0xc1, 0, r1);
-            tcg_out8(s, 8);
-            data_reg = r1;
-        }
-        /* movw */
-        tcg_out8(s, 0x66);
-        tcg_out_modrm_offset(s, 0x89, data_reg, r0, 0);
-        break;
-    case 2:
-        if (bswap) {
-            tcg_out_mov(s, r1, data_reg);
-            /* bswap data_reg */
-            tcg_out_opc(s, (0xc8 + r1) | P_EXT);
-            data_reg = r1;
-        }
-        /* movl */
-        tcg_out_modrm_offset(s, 0x89, data_reg, r0, 0);
-        break;
-    case 3:
-        if (bswap) {
-            tcg_out_mov(s, r1, data_reg2);
-            /* bswap data_reg */
-            tcg_out_opc(s, (0xc8 + r1) | P_EXT);
-            tcg_out_modrm_offset(s, 0x89, r1, r0, 0);
-            tcg_out_mov(s, r1, data_reg);
-            /* bswap data_reg */
-            tcg_out_opc(s, (0xc8 + r1) | P_EXT);
-            tcg_out_modrm_offset(s, 0x89, r1, r0, 4);
-        } else {
-            tcg_out_modrm_offset(s, 0x89, data_reg, r0, 0);
-            tcg_out_modrm_offset(s, 0x89, data_reg2, r0, 4);
-        }
-        break;
-    default:
-        tcg_abort();
-    }
-
-#if defined(CONFIG_SOFTMMU)
-    /* label2: */
-    *label2_ptr = s->code_ptr - label2_ptr - 1;
-#endif
-}
-
-static inline 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_I32, TCG_REG_EAX, args[0]);
-        tcg_out8(s, 0xe9); /* jmp tb_ret_addr */
-        tcg_out32(s, tb_ret_addr - s->code_ptr - 4);
-        break;
-    case INDEX_op_goto_tb:
-        if (s->tb_jmp_offset) {
-            /* direct jump method */
-            tcg_out8(s, 0xe9); /* jmp im */
-            s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
-            tcg_out32(s, 0);
-        } else {
-            /* indirect jump method */
-            /* jmp Ev */
-            tcg_out_modrm_offset(s, 0xff, 4, -1, 
-                                 (tcg_target_long)(s->tb_next + args[0]));
-        }
-        s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
-        break;
-    case INDEX_op_call:
-        if (const_args[0]) {
-            tcg_out8(s, 0xe8);
-            tcg_out32(s, args[0] - (tcg_target_long)s->code_ptr - 4);
-        } else {
-            tcg_out_modrm(s, 0xff, 2, args[0]);
-        }
-        break;
-    case INDEX_op_jmp:
-        if (const_args[0]) {
-            tcg_out8(s, 0xe9);
-            tcg_out32(s, args[0] - (tcg_target_long)s->code_ptr - 4);
-        } else {
-            tcg_out_modrm(s, 0xff, 4, args[0]);
-        }
-        break;
-    case INDEX_op_br:
-        tcg_out_jxx(s, JCC_JMP, args[0]);
-        break;
-    case INDEX_op_movi_i32:
-        tcg_out_movi(s, TCG_TYPE_I32, args[0], args[1]);
-        break;
-    case INDEX_op_ld8u_i32:
-        /* movzbl */
-        tcg_out_modrm_offset(s, 0xb6 | P_EXT, args[0], args[1], args[2]);
-        break;
-    case INDEX_op_ld8s_i32:
-        /* movsbl */
-        tcg_out_modrm_offset(s, 0xbe | P_EXT, args[0], args[1], args[2]);
-        break;
-    case INDEX_op_ld16u_i32:
-        /* movzwl */
-        tcg_out_modrm_offset(s, 0xb7 | P_EXT, args[0], args[1], args[2]);
-        break;
-    case INDEX_op_ld16s_i32:
-        /* movswl */
-        tcg_out_modrm_offset(s, 0xbf | P_EXT, args[0], args[1], args[2]);
-        break;
-    case INDEX_op_ld_i32:
-        /* movl */
-        tcg_out_modrm_offset(s, 0x8b, args[0], args[1], args[2]);
-        break;
-    case INDEX_op_st8_i32:
-        /* movb */
-        tcg_out_modrm_offset(s, 0x88, args[0], args[1], args[2]);
-        break;
-    case INDEX_op_st16_i32:
-        /* movw */
-        tcg_out8(s, 0x66);
-        tcg_out_modrm_offset(s, 0x89, args[0], args[1], args[2]);
-        break;
-    case INDEX_op_st_i32:
-        /* movl */
-        tcg_out_modrm_offset(s, 0x89, args[0], args[1], args[2]);
-        break;
-    case INDEX_op_sub_i32:
-        c = ARITH_SUB;
-        goto gen_arith;
-    case INDEX_op_and_i32:
-        c = ARITH_AND;
-        goto gen_arith;
-    case INDEX_op_or_i32:
-        c = ARITH_OR;
-        goto gen_arith;
-    case INDEX_op_xor_i32:
-        c = ARITH_XOR;
-        goto gen_arith;
-    case INDEX_op_add_i32:
-        c = ARITH_ADD;
-    gen_arith:
-        if (const_args[2]) {
-            tgen_arithi(s, c, args[0], args[2]);
-        } else {
-            tcg_out_modrm(s, 0x01 | (c << 3), args[2], args[0]);
-        }
-        break;
-    case INDEX_op_mul_i32:
-        if (const_args[2]) {
-            int32_t val;
-            val = args[2];
-            if (val == (int8_t)val) {
-                tcg_out_modrm(s, 0x6b, args[0], args[0]);
-                tcg_out8(s, val);
-            } else {
-                tcg_out_modrm(s, 0x69, args[0], args[0]);
-                tcg_out32(s, val);
-            }
-        } else {
-            tcg_out_modrm(s, 0xaf | P_EXT, args[0], args[2]);
-        }
-        break;
-    case INDEX_op_mulu2_i32:
-        tcg_out_modrm(s, 0xf7, 4, args[3]);
-        break;
-    case INDEX_op_div2_i32:
-        tcg_out_modrm(s, 0xf7, 7, args[4]);
-        break;
-    case INDEX_op_divu2_i32:
-        tcg_out_modrm(s, 0xf7, 6, args[4]);
-        break;
-    case INDEX_op_shl_i32:
-        c = SHIFT_SHL;
-    gen_shift32:
-        if (const_args[2]) {
-            if (args[2] == 1) {
-                tcg_out_modrm(s, 0xd1, c, args[0]);
-            } else {
-                tcg_out_modrm(s, 0xc1, c, args[0]);
-                tcg_out8(s, args[2]);
-            }
-        } else {
-            tcg_out_modrm(s, 0xd3, c, args[0]);
-        }
-        break;
-    case INDEX_op_shr_i32:
-        c = SHIFT_SHR;
-        goto gen_shift32;
-    case INDEX_op_sar_i32:
-        c = SHIFT_SAR;
-        goto gen_shift32;
-        
-    case INDEX_op_add2_i32:
-        if (const_args[4]) 
-            tgen_arithi(s, ARITH_ADD, args[0], args[4]);
-        else
-            tcg_out_modrm(s, 0x01 | (ARITH_ADD << 3), args[4], args[0]);
-        if (const_args[5]) 
-            tgen_arithi(s, ARITH_ADC, args[1], args[5]);
-        else
-            tcg_out_modrm(s, 0x01 | (ARITH_ADC << 3), args[5], args[1]);
-        break;
-    case INDEX_op_sub2_i32:
-        if (const_args[4]) 
-            tgen_arithi(s, ARITH_SUB, args[0], args[4]);
-        else
-            tcg_out_modrm(s, 0x01 | (ARITH_SUB << 3), args[4], args[0]);
-        if (const_args[5]) 
-            tgen_arithi(s, ARITH_SBB, args[1], args[5]);
-        else
-            tcg_out_modrm(s, 0x01 | (ARITH_SBB << 3), args[5], args[1]);
-        break;
-    case INDEX_op_brcond_i32:
-        tcg_out_brcond(s, args[2], args[0], args[1], const_args[1], args[3]);
-        break;
-    case INDEX_op_brcond2_i32:
-        tcg_out_brcond2(s, args, const_args);
-        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_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;
-
-    default:
-        tcg_abort();
-    }
-}
-
-static const TCGTargetOpDef x86_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_movi_i32, { "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_st8_i32, { "q", "r" } },
-    { INDEX_op_st16_i32, { "r", "r" } },
-    { INDEX_op_st_i32, { "r", "r" } },
-
-    { INDEX_op_add_i32, { "r", "0", "ri" } },
-    { INDEX_op_sub_i32, { "r", "0", "ri" } },
-    { INDEX_op_mul_i32, { "r", "0", "ri" } },
-    { INDEX_op_mulu2_i32, { "a", "d", "a", "r" } },
-    { INDEX_op_div2_i32, { "a", "d", "0", "1", "r" } },
-    { INDEX_op_divu2_i32, { "a", "d", "0", "1", "r" } },
-    { INDEX_op_and_i32, { "r", "0", "ri" } },
-    { INDEX_op_or_i32, { "r", "0", "ri" } },
-    { INDEX_op_xor_i32, { "r", "0", "ri" } },
-
-    { INDEX_op_shl_i32, { "r", "0", "ci" } },
-    { INDEX_op_shr_i32, { "r", "0", "ci" } },
-    { INDEX_op_sar_i32, { "r", "0", "ci" } },
-
-    { INDEX_op_brcond_i32, { "r", "ri" } },
-
-    { INDEX_op_add2_i32, { "r", "r", "0", "1", "ri", "ri" } },
-    { INDEX_op_sub2_i32, { "r", "r", "0", "1", "ri", "ri" } },
-    { INDEX_op_brcond2_i32, { "r", "r", "ri", "ri" } },
-
-#if TARGET_LONG_BITS == 32
-    { 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_ld64, { "r", "r", "L" } },
-
-    { INDEX_op_qemu_st8, { "cb", "L" } },
-    { INDEX_op_qemu_st16, { "L", "L" } },
-    { INDEX_op_qemu_st32, { "L", "L" } },
-    { INDEX_op_qemu_st64, { "L", "L", "L" } },
-#else
-    { INDEX_op_qemu_ld8u, { "r", "L", "L" } },
-    { INDEX_op_qemu_ld8s, { "r", "L", "L" } },
-    { INDEX_op_qemu_ld16u, { "r", "L", "L" } },
-    { INDEX_op_qemu_ld16s, { "r", "L", "L" } },
-    { INDEX_op_qemu_ld32u, { "r", "L", "L" } },
-    { INDEX_op_qemu_ld64, { "r", "r", "L", "L" } },
-
-    { INDEX_op_qemu_st8, { "cb", "L", "L" } },
-    { INDEX_op_qemu_st16, { "L", "L", "L" } },
-    { INDEX_op_qemu_st32, { "L", "L", "L" } },
-    { INDEX_op_qemu_st64, { "L", "L", "L", "L" } },
-#endif
-    { -1 },
-};
-
-static int tcg_target_callee_save_regs[] = {
-    /*    TCG_REG_EBP, */ /* currently used for the global env, so no
-                             need to save */
-    TCG_REG_EBX,
-    TCG_REG_ESI,
-    TCG_REG_EDI,
-};
-
-static inline void tcg_out_push(TCGContext *s, int reg)
-{
-    tcg_out_opc(s, 0x50 + reg);
-}
-
-static inline void tcg_out_pop(TCGContext *s, int reg)
-{
-    tcg_out_opc(s, 0x58 + reg);
-}
-
-/* Generate global QEMU prologue and epilogue code */
-void tcg_target_qemu_prologue(TCGContext *s)
-{
-    int i, frame_size, push_size, stack_addend;
-    
-    /* TB prologue */
-    /* save all callee saved registers */
-    for(i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) {
-        tcg_out_push(s, tcg_target_callee_save_regs[i]);
-    }
-    /* reserve some stack space */
-    push_size = 4 + ARRAY_SIZE(tcg_target_callee_save_regs) * 4;
-    frame_size = push_size + TCG_STATIC_CALL_ARGS_SIZE;
-    frame_size = (frame_size + TCG_TARGET_STACK_ALIGN - 1) & 
-        ~(TCG_TARGET_STACK_ALIGN - 1);
-    stack_addend = frame_size - push_size;
-    tcg_out_addi(s, TCG_REG_ESP, -stack_addend);
-
-    tcg_out_modrm(s, 0xff, 4, TCG_REG_EAX); /* jmp *%eax */
-    
-    /* TB epilogue */
-    tb_ret_addr = s->code_ptr;
-    tcg_out_addi(s, TCG_REG_ESP, stack_addend);
-    for(i = ARRAY_SIZE(tcg_target_callee_save_regs) - 1; i >= 0; i--) {
-        tcg_out_pop(s, tcg_target_callee_save_regs[i]);
-    }
-    tcg_out8(s, 0xc3); /* ret */
-}
-
-void tcg_target_init(TCGContext *s)
-{
-    /* fail safe */
-    if ((1 << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry))
-        tcg_abort();
-
-    tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xff);
-    tcg_regset_set32(tcg_target_call_clobber_regs, 0,
-                     (1 << TCG_REG_EAX) | 
-                     (1 << TCG_REG_EDX) | 
-                     (1 << TCG_REG_ECX));
-    
-    tcg_regset_clear(s->reserved_regs);
-    tcg_regset_set_reg(s->reserved_regs, TCG_REG_ESP);
-
-    tcg_add_target_add_op_defs(x86_op_defs);
-}