qemu

tcg-target.c.inc (62295B)

---

 /*
  * 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.
  */
 
 /* We only support generating code for 64-bit mode.  */
 #ifndef __arch64__
 #error "unsupported code generation mode"
 #endif
 
 #include "../tcg-pool.c.inc"
 
 #ifdef CONFIG_DEBUG_TCG
 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
     "%g0",
     "%g1",
     "%g2",
     "%g3",
     "%g4",
     "%g5",
     "%g6",
     "%g7",
     "%o0",
     "%o1",
     "%o2",
     "%o3",
     "%o4",
     "%o5",
     "%o6",
     "%o7",
     "%l0",
     "%l1",
     "%l2",
     "%l3",
     "%l4",
     "%l5",
     "%l6",
     "%l7",
     "%i0",
     "%i1",
     "%i2",
     "%i3",
     "%i4",
     "%i5",
     "%i6",
     "%i7",
 };
 #endif
 
 #define TCG_CT_CONST_S11  0x100
 #define TCG_CT_CONST_S13  0x200
 #define TCG_CT_CONST_ZERO 0x400
 
 /*
  * For softmmu, we need to avoid conflicts with the first 3
  * argument registers to perform the tlb lookup, and to call
  * the helper function.
  */
 #ifdef CONFIG_SOFTMMU
 #define SOFTMMU_RESERVE_REGS MAKE_64BIT_MASK(TCG_REG_O0, 3)
 #else
 #define SOFTMMU_RESERVE_REGS 0
 #endif
 #define ALL_GENERAL_REGS     MAKE_64BIT_MASK(0, 32)
 #define ALL_QLDST_REGS       (ALL_GENERAL_REGS & ~SOFTMMU_RESERVE_REGS)
 
 /* Define some temporary registers.  T2 is used for constant generation.  */
 #define TCG_REG_T1  TCG_REG_G1
 #define TCG_REG_T2  TCG_REG_O7
 
 #ifndef CONFIG_SOFTMMU
 # define TCG_GUEST_BASE_REG TCG_REG_I5
 #endif
 
 #define TCG_REG_TB  TCG_REG_I1
 #define USE_REG_TB  (sizeof(void *) > 4)
 
 static const int tcg_target_reg_alloc_order[] = {
     TCG_REG_L0,
     TCG_REG_L1,
     TCG_REG_L2,
     TCG_REG_L3,
     TCG_REG_L4,
     TCG_REG_L5,
     TCG_REG_L6,
     TCG_REG_L7,
 
     TCG_REG_I0,
     TCG_REG_I1,
     TCG_REG_I2,
     TCG_REG_I3,
     TCG_REG_I4,
     TCG_REG_I5,
 
     TCG_REG_G2,
     TCG_REG_G3,
     TCG_REG_G4,
     TCG_REG_G5,
 
     TCG_REG_O0,
     TCG_REG_O1,
     TCG_REG_O2,
     TCG_REG_O3,
     TCG_REG_O4,
     TCG_REG_O5,
 };
 
 static const int tcg_target_call_iarg_regs[6] = {
     TCG_REG_O0,
     TCG_REG_O1,
     TCG_REG_O2,
     TCG_REG_O3,
     TCG_REG_O4,
     TCG_REG_O5,
 };
 
 static const int tcg_target_call_oarg_regs[] = {
     TCG_REG_O0,
     TCG_REG_O1,
     TCG_REG_O2,
     TCG_REG_O3,
 };
 
 #define INSN_OP(x)  ((x) << 30)
 #define INSN_OP2(x) ((x) << 22)
 #define INSN_OP3(x) ((x) << 19)
 #define INSN_OPF(x) ((x) << 5)
 #define INSN_RD(x)  ((x) << 25)
 #define INSN_RS1(x) ((x) << 14)
 #define INSN_RS2(x) (x)
 #define INSN_ASI(x) ((x) << 5)
 
 #define INSN_IMM10(x) ((1 << 13) | ((x) & 0x3ff))
 #define INSN_IMM11(x) ((1 << 13) | ((x) & 0x7ff))
 #define INSN_IMM13(x) ((1 << 13) | ((x) & 0x1fff))
 #define INSN_OFF16(x) ((((x) >> 2) & 0x3fff) | ((((x) >> 16) & 3) << 20))
 #define INSN_OFF19(x) (((x) >> 2) & 0x07ffff)
 #define INSN_COND(x) ((x) << 25)
 
 #define COND_N     0x0
 #define COND_E     0x1
 #define COND_LE    0x2
 #define COND_L     0x3
 #define COND_LEU   0x4
 #define COND_CS    0x5
 #define COND_NEG   0x6
 #define COND_VS    0x7
 #define COND_A     0x8
 #define COND_NE    0x9
 #define COND_G     0xa
 #define COND_GE    0xb
 #define COND_GU    0xc
 #define COND_CC    0xd
 #define COND_POS   0xe
 #define COND_VC    0xf
 #define BA         (INSN_OP(0) | INSN_COND(COND_A) | INSN_OP2(0x2))
 
 #define RCOND_Z    1
 #define RCOND_LEZ  2
 #define RCOND_LZ   3
 #define RCOND_NZ   5
 #define RCOND_GZ   6
 #define RCOND_GEZ  7
 
 #define MOVCC_ICC  (1 << 18)
 #define MOVCC_XCC  (1 << 18 | 1 << 12)
 
 #define BPCC_ICC   0
 #define BPCC_XCC   (2 << 20)
 #define BPCC_PT    (1 << 19)
 #define BPCC_PN    0
 #define BPCC_A     (1 << 29)
 
 #define BPR_PT     BPCC_PT
 
 #define ARITH_ADD  (INSN_OP(2) | INSN_OP3(0x00))
 #define ARITH_ADDCC (INSN_OP(2) | INSN_OP3(0x10))
 #define ARITH_AND  (INSN_OP(2) | INSN_OP3(0x01))
 #define ARITH_ANDCC (INSN_OP(2) | INSN_OP3(0x11))
 #define ARITH_ANDN (INSN_OP(2) | INSN_OP3(0x05))
 #define ARITH_OR   (INSN_OP(2) | INSN_OP3(0x02))
 #define ARITH_ORCC (INSN_OP(2) | INSN_OP3(0x12))
 #define ARITH_ORN  (INSN_OP(2) | INSN_OP3(0x06))
 #define ARITH_XOR  (INSN_OP(2) | INSN_OP3(0x03))
 #define ARITH_SUB  (INSN_OP(2) | INSN_OP3(0x04))
 #define ARITH_SUBCC (INSN_OP(2) | INSN_OP3(0x14))
 #define ARITH_ADDC (INSN_OP(2) | INSN_OP3(0x08))
 #define ARITH_SUBC (INSN_OP(2) | INSN_OP3(0x0c))
 #define ARITH_UMUL (INSN_OP(2) | INSN_OP3(0x0a))
 #define ARITH_SMUL (INSN_OP(2) | INSN_OP3(0x0b))
 #define ARITH_UDIV (INSN_OP(2) | INSN_OP3(0x0e))
 #define ARITH_SDIV (INSN_OP(2) | INSN_OP3(0x0f))
 #define ARITH_MULX (INSN_OP(2) | INSN_OP3(0x09))
 #define ARITH_UDIVX (INSN_OP(2) | INSN_OP3(0x0d))
 #define ARITH_SDIVX (INSN_OP(2) | INSN_OP3(0x2d))
 #define ARITH_MOVCC (INSN_OP(2) | INSN_OP3(0x2c))
 #define ARITH_MOVR (INSN_OP(2) | INSN_OP3(0x2f))
 
 #define ARITH_ADDXC (INSN_OP(2) | INSN_OP3(0x36) | INSN_OPF(0x11))
 #define ARITH_UMULXHI (INSN_OP(2) | INSN_OP3(0x36) | INSN_OPF(0x16))
 
 #define SHIFT_SLL  (INSN_OP(2) | INSN_OP3(0x25))
 #define SHIFT_SRL  (INSN_OP(2) | INSN_OP3(0x26))
 #define SHIFT_SRA  (INSN_OP(2) | INSN_OP3(0x27))
 
 #define SHIFT_SLLX (INSN_OP(2) | INSN_OP3(0x25) | (1 << 12))
 #define SHIFT_SRLX (INSN_OP(2) | INSN_OP3(0x26) | (1 << 12))
 #define SHIFT_SRAX (INSN_OP(2) | INSN_OP3(0x27) | (1 << 12))
 
 #define RDY        (INSN_OP(2) | INSN_OP3(0x28) | INSN_RS1(0))
 #define WRY        (INSN_OP(2) | INSN_OP3(0x30) | INSN_RD(0))
 #define JMPL       (INSN_OP(2) | INSN_OP3(0x38))
 #define RETURN     (INSN_OP(2) | INSN_OP3(0x39))
 #define SAVE       (INSN_OP(2) | INSN_OP3(0x3c))
 #define RESTORE    (INSN_OP(2) | INSN_OP3(0x3d))
 #define SETHI      (INSN_OP(0) | INSN_OP2(0x4))
 #define CALL       INSN_OP(1)
 #define LDUB       (INSN_OP(3) | INSN_OP3(0x01))
 #define LDSB       (INSN_OP(3) | INSN_OP3(0x09))
 #define LDUH       (INSN_OP(3) | INSN_OP3(0x02))
 #define LDSH       (INSN_OP(3) | INSN_OP3(0x0a))
 #define LDUW       (INSN_OP(3) | INSN_OP3(0x00))
 #define LDSW       (INSN_OP(3) | INSN_OP3(0x08))
 #define LDX        (INSN_OP(3) | INSN_OP3(0x0b))
 #define STB        (INSN_OP(3) | INSN_OP3(0x05))
 #define STH        (INSN_OP(3) | INSN_OP3(0x06))
 #define STW        (INSN_OP(3) | INSN_OP3(0x04))
 #define STX        (INSN_OP(3) | INSN_OP3(0x0e))
 #define LDUBA      (INSN_OP(3) | INSN_OP3(0x11))
 #define LDSBA      (INSN_OP(3) | INSN_OP3(0x19))
 #define LDUHA      (INSN_OP(3) | INSN_OP3(0x12))
 #define LDSHA      (INSN_OP(3) | INSN_OP3(0x1a))
 #define LDUWA      (INSN_OP(3) | INSN_OP3(0x10))
 #define LDSWA      (INSN_OP(3) | INSN_OP3(0x18))
 #define LDXA       (INSN_OP(3) | INSN_OP3(0x1b))
 #define STBA       (INSN_OP(3) | INSN_OP3(0x15))
 #define STHA       (INSN_OP(3) | INSN_OP3(0x16))
 #define STWA       (INSN_OP(3) | INSN_OP3(0x14))
 #define STXA       (INSN_OP(3) | INSN_OP3(0x1e))
 
 #define MEMBAR     (INSN_OP(2) | INSN_OP3(0x28) | INSN_RS1(15) | (1 << 13))
 
 #define NOP        (SETHI | INSN_RD(TCG_REG_G0) | 0)
 
 #ifndef ASI_PRIMARY_LITTLE
 #define ASI_PRIMARY_LITTLE 0x88
 #endif
 
 #define LDUH_LE    (LDUHA | INSN_ASI(ASI_PRIMARY_LITTLE))
 #define LDSH_LE    (LDSHA | INSN_ASI(ASI_PRIMARY_LITTLE))
 #define LDUW_LE    (LDUWA | INSN_ASI(ASI_PRIMARY_LITTLE))
 #define LDSW_LE    (LDSWA | INSN_ASI(ASI_PRIMARY_LITTLE))
 #define LDX_LE     (LDXA  | INSN_ASI(ASI_PRIMARY_LITTLE))
 
 #define STH_LE     (STHA  | INSN_ASI(ASI_PRIMARY_LITTLE))
 #define STW_LE     (STWA  | INSN_ASI(ASI_PRIMARY_LITTLE))
 #define STX_LE     (STXA  | INSN_ASI(ASI_PRIMARY_LITTLE))
 
 #ifndef use_vis3_instructions
 bool use_vis3_instructions;
 #endif
 
 static bool check_fit_i64(int64_t val, unsigned int bits)
 {
     return val == sextract64(val, 0, bits);
 }
 
 static bool check_fit_i32(int32_t val, unsigned int bits)
 {
     return val == sextract32(val, 0, bits);
 }
 
 #define check_fit_tl    check_fit_i64
 #define check_fit_ptr   check_fit_i64
 
 static bool patch_reloc(tcg_insn_unit *src_rw, int type,
                         intptr_t value, intptr_t addend)
 {
     const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw);
     uint32_t insn = *src_rw;
     intptr_t pcrel;
 
     value += addend;
     pcrel = tcg_ptr_byte_diff((tcg_insn_unit *)value, src_rx);
 
     switch (type) {
     case R_SPARC_WDISP16:
         if (!check_fit_ptr(pcrel >> 2, 16)) {
             return false;
         }
         insn &= ~INSN_OFF16(-1);
         insn |= INSN_OFF16(pcrel);
         break;
     case R_SPARC_WDISP19:
         if (!check_fit_ptr(pcrel >> 2, 19)) {
             return false;
         }
         insn &= ~INSN_OFF19(-1);
         insn |= INSN_OFF19(pcrel);
         break;
     case R_SPARC_13:
         if (!check_fit_ptr(value, 13)) {
             return false;
         }
         insn &= ~INSN_IMM13(-1);
         insn |= INSN_IMM13(value);
         break;
     default:
         g_assert_not_reached();
     }
 
     *src_rw = insn;
     return true;
 }
 
 /* test if a constant matches the constraint */
 static bool tcg_target_const_match(int64_t val, TCGType type, int ct)
 {
     if (ct & TCG_CT_CONST) {
         return 1;
     }
 
     if (type == TCG_TYPE_I32) {
         val = (int32_t)val;
     }
 
     if ((ct & TCG_CT_CONST_ZERO) && val == 0) {
         return 1;
     } else if ((ct & TCG_CT_CONST_S11) && check_fit_tl(val, 11)) {
         return 1;
     } else if ((ct & TCG_CT_CONST_S13) && check_fit_tl(val, 13)) {
         return 1;
     } else {
         return 0;
     }
 }
 
 static void tcg_out_nop(TCGContext *s)
 {
     tcg_out32(s, NOP);
 }
 
 static void tcg_out_arith(TCGContext *s, TCGReg rd, TCGReg rs1,
                           TCGReg rs2, int op)
 {
     tcg_out32(s, op | INSN_RD(rd) | INSN_RS1(rs1) | INSN_RS2(rs2));
 }
 
 static void tcg_out_arithi(TCGContext *s, TCGReg rd, TCGReg rs1,
                            int32_t offset, int op)
 {
     tcg_out32(s, op | INSN_RD(rd) | INSN_RS1(rs1) | INSN_IMM13(offset));
 }
 
 static void tcg_out_arithc(TCGContext *s, TCGReg rd, TCGReg rs1,
 			   int32_t val2, int val2const, int op)
 {
     tcg_out32(s, op | INSN_RD(rd) | INSN_RS1(rs1)
               | (val2const ? INSN_IMM13(val2) : INSN_RS2(val2)));
 }
 
 static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
 {
     if (ret != arg) {
         tcg_out_arith(s, ret, arg, TCG_REG_G0, ARITH_OR);
     }
     return true;
 }
 
 static void tcg_out_mov_delay(TCGContext *s, TCGReg ret, TCGReg arg)
 {
     if (ret != arg) {
         tcg_out_arith(s, ret, arg, TCG_REG_G0, ARITH_OR);
     } else {
         tcg_out_nop(s);
     }
 }
 
 static void tcg_out_sethi(TCGContext *s, TCGReg ret, uint32_t arg)
 {
     tcg_out32(s, SETHI | INSN_RD(ret) | ((arg & 0xfffffc00) >> 10));
 }
 
 static void tcg_out_movi_imm13(TCGContext *s, TCGReg ret, int32_t arg)
 {
     tcg_out_arithi(s, ret, TCG_REG_G0, arg, ARITH_OR);
 }
 
 static void tcg_out_movi_imm32(TCGContext *s, TCGReg ret, int32_t arg)
 {
     if (check_fit_i32(arg, 13)) {
         /* A 13-bit constant sign-extended to 64-bits.  */
         tcg_out_movi_imm13(s, ret, arg);
     } else {
         /* A 32-bit constant zero-extended to 64 bits.  */
         tcg_out_sethi(s, ret, arg);
         if (arg & 0x3ff) {
             tcg_out_arithi(s, ret, ret, arg & 0x3ff, ARITH_OR);
         }
     }
 }
 
 static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret,
                              tcg_target_long arg, bool in_prologue,
                              TCGReg scratch)
 {
     tcg_target_long hi, lo = (int32_t)arg;
     tcg_target_long test, lsb;
 
     /* A 32-bit constant, or 32-bit zero-extended to 64-bits.  */
     if (type == TCG_TYPE_I32 || arg == (uint32_t)arg) {
         tcg_out_movi_imm32(s, ret, arg);
         return;
     }
 
     /* A 13-bit constant sign-extended to 64-bits.  */
     if (check_fit_tl(arg, 13)) {
         tcg_out_movi_imm13(s, ret, arg);
         return;
     }
 
     /* A 13-bit constant relative to the TB.  */
     if (!in_prologue && USE_REG_TB) {
         test = tcg_tbrel_diff(s, (void *)arg);
         if (check_fit_ptr(test, 13)) {
             tcg_out_arithi(s, ret, TCG_REG_TB, test, ARITH_ADD);
             return;
         }
     }
 
     /* A 32-bit constant sign-extended to 64-bits.  */
     if (arg == lo) {
         tcg_out_sethi(s, ret, ~arg);
         tcg_out_arithi(s, ret, ret, (arg & 0x3ff) | -0x400, ARITH_XOR);
         return;
     }
 
     /* A 32-bit constant, shifted.  */
     lsb = ctz64(arg);
     test = (tcg_target_long)arg >> lsb;
     if (lsb > 10 && test == extract64(test, 0, 21)) {
         tcg_out_sethi(s, ret, test << 10);
         tcg_out_arithi(s, ret, ret, lsb - 10, SHIFT_SLLX);
         return;
     } else if (test == (uint32_t)test || test == (int32_t)test) {
         tcg_out_movi_int(s, TCG_TYPE_I64, ret, test, in_prologue, scratch);
         tcg_out_arithi(s, ret, ret, lsb, SHIFT_SLLX);
         return;
     }
 
     /* Use the constant pool, if possible. */
     if (!in_prologue && USE_REG_TB) {
         new_pool_label(s, arg, R_SPARC_13, s->code_ptr,
                        tcg_tbrel_diff(s, NULL));
         tcg_out32(s, LDX | INSN_RD(ret) | INSN_RS1(TCG_REG_TB));
         return;
     }
 
     /* A 64-bit constant decomposed into 2 32-bit pieces.  */
     if (check_fit_i32(lo, 13)) {
         hi = (arg - lo) >> 32;
         tcg_out_movi_imm32(s, ret, hi);
         tcg_out_arithi(s, ret, ret, 32, SHIFT_SLLX);
         tcg_out_arithi(s, ret, ret, lo, ARITH_ADD);
     } else {
         hi = arg >> 32;
         tcg_out_movi_imm32(s, ret, hi);
         tcg_out_movi_imm32(s, scratch, lo);
         tcg_out_arithi(s, ret, ret, 32, SHIFT_SLLX);
         tcg_out_arith(s, ret, ret, scratch, ARITH_OR);
     }
 }
 
 static void tcg_out_movi(TCGContext *s, TCGType type,
                          TCGReg ret, tcg_target_long arg)
 {
     tcg_debug_assert(ret != TCG_REG_T2);
     tcg_out_movi_int(s, type, ret, arg, false, TCG_REG_T2);
 }
 
 static void tcg_out_ldst_rr(TCGContext *s, TCGReg data, TCGReg a1,
                             TCGReg a2, int op)
 {
     tcg_out32(s, op | INSN_RD(data) | INSN_RS1(a1) | INSN_RS2(a2));
 }
 
 static void tcg_out_ldst(TCGContext *s, TCGReg ret, TCGReg addr,
                          intptr_t offset, int op)
 {
     if (check_fit_ptr(offset, 13)) {
         tcg_out32(s, op | INSN_RD(ret) | INSN_RS1(addr) |
                   INSN_IMM13(offset));
     } else {
         tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_T1, offset);
         tcg_out_ldst_rr(s, ret, addr, TCG_REG_T1, op);
     }
 }
 
 static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret,
                        TCGReg arg1, intptr_t arg2)
 {
     tcg_out_ldst(s, ret, arg1, arg2, (type == TCG_TYPE_I32 ? LDUW : LDX));
 }
 
 static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
                        TCGReg arg1, intptr_t arg2)
 {
     tcg_out_ldst(s, arg, arg1, arg2, (type == TCG_TYPE_I32 ? STW : STX));
 }
 
 static bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val,
                         TCGReg base, intptr_t ofs)
 {
     if (val == 0) {
         tcg_out_st(s, type, TCG_REG_G0, base, ofs);
         return true;
     }
     return false;
 }
 
 static void tcg_out_ld_ptr(TCGContext *s, TCGReg ret, const void *arg)
 {
     intptr_t diff = tcg_tbrel_diff(s, arg);
     if (USE_REG_TB && check_fit_ptr(diff, 13)) {
         tcg_out_ld(s, TCG_TYPE_PTR, ret, TCG_REG_TB, diff);
         return;
     }
     tcg_out_movi(s, TCG_TYPE_PTR, ret, (uintptr_t)arg & ~0x3ff);
     tcg_out_ld(s, TCG_TYPE_PTR, ret, ret, (uintptr_t)arg & 0x3ff);
 }
 
 static void tcg_out_sety(TCGContext *s, TCGReg rs)
 {
     tcg_out32(s, WRY | INSN_RS1(TCG_REG_G0) | INSN_RS2(rs));
 }
 
 static void tcg_out_div32(TCGContext *s, TCGReg rd, TCGReg rs1,
                           int32_t val2, int val2const, int uns)
 {
     /* Load Y with the sign/zero extension of RS1 to 64-bits.  */
     if (uns) {
         tcg_out_sety(s, TCG_REG_G0);
     } else {
         tcg_out_arithi(s, TCG_REG_T1, rs1, 31, SHIFT_SRA);
         tcg_out_sety(s, TCG_REG_T1);
     }
 
     tcg_out_arithc(s, rd, rs1, val2, val2const,
                    uns ? ARITH_UDIV : ARITH_SDIV);
 }
 
 static const uint8_t tcg_cond_to_bcond[] = {
     [TCG_COND_EQ] = COND_E,
     [TCG_COND_NE] = COND_NE,
     [TCG_COND_LT] = COND_L,
     [TCG_COND_GE] = COND_GE,
     [TCG_COND_LE] = COND_LE,
     [TCG_COND_GT] = COND_G,
     [TCG_COND_LTU] = COND_CS,
     [TCG_COND_GEU] = COND_CC,
     [TCG_COND_LEU] = COND_LEU,
     [TCG_COND_GTU] = COND_GU,
 };
 
 static const uint8_t tcg_cond_to_rcond[] = {
     [TCG_COND_EQ] = RCOND_Z,
     [TCG_COND_NE] = RCOND_NZ,
     [TCG_COND_LT] = RCOND_LZ,
     [TCG_COND_GT] = RCOND_GZ,
     [TCG_COND_LE] = RCOND_LEZ,
     [TCG_COND_GE] = RCOND_GEZ
 };
 
 static void tcg_out_bpcc0(TCGContext *s, int scond, int flags, int off19)
 {
     tcg_out32(s, INSN_OP(0) | INSN_OP2(1) | INSN_COND(scond) | flags | off19);
 }
 
 static void tcg_out_bpcc(TCGContext *s, int scond, int flags, TCGLabel *l)
 {
     int off19 = 0;
 
     if (l->has_value) {
         off19 = INSN_OFF19(tcg_pcrel_diff(s, l->u.value_ptr));
     } else {
         tcg_out_reloc(s, s->code_ptr, R_SPARC_WDISP19, l, 0);
     }
     tcg_out_bpcc0(s, scond, flags, off19);
 }
 
 static void tcg_out_cmp(TCGContext *s, TCGReg c1, int32_t c2, int c2const)
 {
     tcg_out_arithc(s, TCG_REG_G0, c1, c2, c2const, ARITH_SUBCC);
 }
 
 static void tcg_out_brcond_i32(TCGContext *s, TCGCond cond, TCGReg arg1,
                                int32_t arg2, int const_arg2, TCGLabel *l)
 {
     tcg_out_cmp(s, arg1, arg2, const_arg2);
     tcg_out_bpcc(s, tcg_cond_to_bcond[cond], BPCC_ICC | BPCC_PT, l);
     tcg_out_nop(s);
 }
 
 static void tcg_out_movcc(TCGContext *s, TCGCond cond, int cc, TCGReg ret,
                           int32_t v1, int v1const)
 {
     tcg_out32(s, ARITH_MOVCC | cc | INSN_RD(ret)
               | INSN_RS1(tcg_cond_to_bcond[cond])
               | (v1const ? INSN_IMM11(v1) : INSN_RS2(v1)));
 }
 
 static void tcg_out_movcond_i32(TCGContext *s, TCGCond cond, TCGReg ret,
                                 TCGReg c1, int32_t c2, int c2const,
                                 int32_t v1, int v1const)
 {
     tcg_out_cmp(s, c1, c2, c2const);
     tcg_out_movcc(s, cond, MOVCC_ICC, ret, v1, v1const);
 }
 
 static void tcg_out_brcond_i64(TCGContext *s, TCGCond cond, TCGReg arg1,
                                int32_t arg2, int const_arg2, TCGLabel *l)
 {
     /* For 64-bit signed comparisons vs zero, we can avoid the compare.  */
     if (arg2 == 0 && !is_unsigned_cond(cond)) {
         int off16 = 0;
 
         if (l->has_value) {
             off16 = INSN_OFF16(tcg_pcrel_diff(s, l->u.value_ptr));
         } else {
             tcg_out_reloc(s, s->code_ptr, R_SPARC_WDISP16, l, 0);
         }
         tcg_out32(s, INSN_OP(0) | INSN_OP2(3) | BPR_PT | INSN_RS1(arg1)
                   | INSN_COND(tcg_cond_to_rcond[cond]) | off16);
     } else {
         tcg_out_cmp(s, arg1, arg2, const_arg2);
         tcg_out_bpcc(s, tcg_cond_to_bcond[cond], BPCC_XCC | BPCC_PT, l);
     }
     tcg_out_nop(s);
 }
 
 static void tcg_out_movr(TCGContext *s, TCGCond cond, TCGReg ret, TCGReg c1,
                          int32_t v1, int v1const)
 {
     tcg_out32(s, ARITH_MOVR | INSN_RD(ret) | INSN_RS1(c1)
               | (tcg_cond_to_rcond[cond] << 10)
               | (v1const ? INSN_IMM10(v1) : INSN_RS2(v1)));
 }
 
 static void tcg_out_movcond_i64(TCGContext *s, TCGCond cond, TCGReg ret,
                                 TCGReg c1, int32_t c2, int c2const,
                                 int32_t v1, int v1const)
 {
     /* For 64-bit signed comparisons vs zero, we can avoid the compare.
        Note that the immediate range is one bit smaller, so we must check
        for that as well.  */
     if (c2 == 0 && !is_unsigned_cond(cond)
         && (!v1const || check_fit_i32(v1, 10))) {
         tcg_out_movr(s, cond, ret, c1, v1, v1const);
     } else {
         tcg_out_cmp(s, c1, c2, c2const);
         tcg_out_movcc(s, cond, MOVCC_XCC, ret, v1, v1const);
     }
 }
 
 static void tcg_out_setcond_i32(TCGContext *s, TCGCond cond, TCGReg ret,
                                 TCGReg c1, int32_t c2, int c2const)
 {
     /* For 32-bit comparisons, we can play games with ADDC/SUBC.  */
     switch (cond) {
     case TCG_COND_LTU:
     case TCG_COND_GEU:
         /* The result of the comparison is in the carry bit.  */
         break;
 
     case TCG_COND_EQ:
     case TCG_COND_NE:
         /* For equality, we can transform to inequality vs zero.  */
         if (c2 != 0) {
             tcg_out_arithc(s, TCG_REG_T1, c1, c2, c2const, ARITH_XOR);
             c2 = TCG_REG_T1;
         } else {
             c2 = c1;
         }
         c1 = TCG_REG_G0, c2const = 0;
         cond = (cond == TCG_COND_EQ ? TCG_COND_GEU : TCG_COND_LTU);
 	break;
 
     case TCG_COND_GTU:
     case TCG_COND_LEU:
         /* If we don't need to load a constant into a register, we can
            swap the operands on GTU/LEU.  There's no benefit to loading
            the constant into a temporary register.  */
         if (!c2const || c2 == 0) {
             TCGReg t = c1;
             c1 = c2;
             c2 = t;
             c2const = 0;
             cond = tcg_swap_cond(cond);
             break;
         }
         /* FALLTHRU */
 
     default:
         tcg_out_cmp(s, c1, c2, c2const);
         tcg_out_movi_imm13(s, ret, 0);
         tcg_out_movcc(s, cond, MOVCC_ICC, ret, 1, 1);
         return;
     }
 
     tcg_out_cmp(s, c1, c2, c2const);
     if (cond == TCG_COND_LTU) {
         tcg_out_arithi(s, ret, TCG_REG_G0, 0, ARITH_ADDC);
     } else {
         tcg_out_arithi(s, ret, TCG_REG_G0, -1, ARITH_SUBC);
     }
 }
 
 static void tcg_out_setcond_i64(TCGContext *s, TCGCond cond, TCGReg ret,
                                 TCGReg c1, int32_t c2, int c2const)
 {
     if (use_vis3_instructions) {
         switch (cond) {
         case TCG_COND_NE:
             if (c2 != 0) {
                 break;
             }
             c2 = c1, c2const = 0, c1 = TCG_REG_G0;
             /* FALLTHRU */
         case TCG_COND_LTU:
             tcg_out_cmp(s, c1, c2, c2const);
             tcg_out_arith(s, ret, TCG_REG_G0, TCG_REG_G0, ARITH_ADDXC);
             return;
         default:
             break;
         }
     }
 
     /* For 64-bit signed comparisons vs zero, we can avoid the compare
        if the input does not overlap the output.  */
     if (c2 == 0 && !is_unsigned_cond(cond) && c1 != ret) {
         tcg_out_movi_imm13(s, ret, 0);
         tcg_out_movr(s, cond, ret, c1, 1, 1);
     } else {
         tcg_out_cmp(s, c1, c2, c2const);
         tcg_out_movi_imm13(s, ret, 0);
         tcg_out_movcc(s, cond, MOVCC_XCC, ret, 1, 1);
     }
 }
 
 static void tcg_out_addsub2_i32(TCGContext *s, TCGReg rl, TCGReg rh,
                                 TCGReg al, TCGReg ah, int32_t bl, int blconst,
                                 int32_t bh, int bhconst, int opl, int oph)
 {
     TCGReg tmp = TCG_REG_T1;
 
     /* Note that the low parts are fully consumed before tmp is set.  */
     if (rl != ah && (bhconst || rl != bh)) {
         tmp = rl;
     }
 
     tcg_out_arithc(s, tmp, al, bl, blconst, opl);
     tcg_out_arithc(s, rh, ah, bh, bhconst, oph);
     tcg_out_mov(s, TCG_TYPE_I32, rl, tmp);
 }
 
 static void tcg_out_addsub2_i64(TCGContext *s, TCGReg rl, TCGReg rh,
                                 TCGReg al, TCGReg ah, int32_t bl, int blconst,
                                 int32_t bh, int bhconst, bool is_sub)
 {
     TCGReg tmp = TCG_REG_T1;
 
     /* Note that the low parts are fully consumed before tmp is set.  */
     if (rl != ah && (bhconst || rl != bh)) {
         tmp = rl;
     }
 
     tcg_out_arithc(s, tmp, al, bl, blconst, is_sub ? ARITH_SUBCC : ARITH_ADDCC);
 
     if (use_vis3_instructions && !is_sub) {
         /* Note that ADDXC doesn't accept immediates.  */
         if (bhconst && bh != 0) {
            tcg_out_movi_imm13(s, TCG_REG_T2, bh);
            bh = TCG_REG_T2;
         }
         tcg_out_arith(s, rh, ah, bh, ARITH_ADDXC);
     } else if (bh == TCG_REG_G0) {
 	/* If we have a zero, we can perform the operation in two insns,
            with the arithmetic first, and a conditional move into place.  */
 	if (rh == ah) {
             tcg_out_arithi(s, TCG_REG_T2, ah, 1,
 			   is_sub ? ARITH_SUB : ARITH_ADD);
             tcg_out_movcc(s, TCG_COND_LTU, MOVCC_XCC, rh, TCG_REG_T2, 0);
 	} else {
             tcg_out_arithi(s, rh, ah, 1, is_sub ? ARITH_SUB : ARITH_ADD);
 	    tcg_out_movcc(s, TCG_COND_GEU, MOVCC_XCC, rh, ah, 0);
 	}
     } else {
         /*
          * Otherwise adjust BH as if there is carry into T2.
          * Note that constant BH is constrained to 11 bits for the MOVCC,
          * so the adjustment fits 12 bits.
          */
         if (bhconst) {
             tcg_out_movi_imm13(s, TCG_REG_T2, bh + (is_sub ? -1 : 1));
         } else {
             tcg_out_arithi(s, TCG_REG_T2, bh, 1,
                            is_sub ? ARITH_SUB : ARITH_ADD);
         }
         /* ... smoosh T2 back to original BH if carry is clear ... */
         tcg_out_movcc(s, TCG_COND_GEU, MOVCC_XCC, TCG_REG_T2, bh, bhconst);
 	/* ... and finally perform the arithmetic with the new operand.  */
         tcg_out_arith(s, rh, ah, TCG_REG_T2, is_sub ? ARITH_SUB : ARITH_ADD);
     }
 
     tcg_out_mov(s, TCG_TYPE_I64, rl, tmp);
 }
 
 static void tcg_out_jmpl_const(TCGContext *s, const tcg_insn_unit *dest,
                                bool in_prologue, bool tail_call)
 {
     uintptr_t desti = (uintptr_t)dest;
 
     /* Be careful not to clobber %o7 for a tail call. */
     tcg_out_movi_int(s, TCG_TYPE_PTR, TCG_REG_T1,
                      desti & ~0xfff, in_prologue,
                      tail_call ? TCG_REG_G2 : TCG_REG_O7);
     tcg_out_arithi(s, tail_call ? TCG_REG_G0 : TCG_REG_O7,
                    TCG_REG_T1, desti & 0xfff, JMPL);
 }
 
 static void tcg_out_call_nodelay(TCGContext *s, const tcg_insn_unit *dest,
                                  bool in_prologue)
 {
     ptrdiff_t disp = tcg_pcrel_diff(s, dest);
 
     if (disp == (int32_t)disp) {
         tcg_out32(s, CALL | (uint32_t)disp >> 2);
     } else {
         tcg_out_jmpl_const(s, dest, in_prologue, false);
     }
 }
 
 static void tcg_out_call(TCGContext *s, const tcg_insn_unit *dest)
 {
     tcg_out_call_nodelay(s, dest, false);
     tcg_out_nop(s);
 }
 
 static void tcg_out_mb(TCGContext *s, TCGArg a0)
 {
     /* Note that the TCG memory order constants mirror the Sparc MEMBAR.  */
     tcg_out32(s, MEMBAR | (a0 & TCG_MO_ALL));
 }
 
 #ifdef CONFIG_SOFTMMU
 static const tcg_insn_unit *qemu_ld_trampoline[(MO_SSIZE | MO_BSWAP) + 1];
 static const tcg_insn_unit *qemu_st_trampoline[(MO_SIZE | MO_BSWAP) + 1];
 
 static void emit_extend(TCGContext *s, TCGReg r, int op)
 {
     /* Emit zero extend of 8, 16 or 32 bit data as
      * required by the MO_* value op; do nothing for 64 bit.
      */
     switch (op & MO_SIZE) {
     case MO_8:
         tcg_out_arithi(s, r, r, 0xff, ARITH_AND);
         break;
     case MO_16:
         tcg_out_arithi(s, r, r, 16, SHIFT_SLL);
         tcg_out_arithi(s, r, r, 16, SHIFT_SRL);
         break;
     case MO_32:
         tcg_out_arith(s, r, r, 0, SHIFT_SRL);
         break;
     case MO_64:
         break;
     }
 }
 
 static void build_trampolines(TCGContext *s)
 {
     static void * const qemu_ld_helpers[] = {
         [MO_UB]   = helper_ret_ldub_mmu,
         [MO_SB]   = helper_ret_ldsb_mmu,
         [MO_LEUW] = helper_le_lduw_mmu,
         [MO_LESW] = helper_le_ldsw_mmu,
         [MO_LEUL] = helper_le_ldul_mmu,
         [MO_LEUQ] = helper_le_ldq_mmu,
         [MO_BEUW] = helper_be_lduw_mmu,
         [MO_BESW] = helper_be_ldsw_mmu,
         [MO_BEUL] = helper_be_ldul_mmu,
         [MO_BEUQ] = helper_be_ldq_mmu,
     };
     static void * const qemu_st_helpers[] = {
         [MO_UB]   = helper_ret_stb_mmu,
         [MO_LEUW] = helper_le_stw_mmu,
         [MO_LEUL] = helper_le_stl_mmu,
         [MO_LEUQ] = helper_le_stq_mmu,
         [MO_BEUW] = helper_be_stw_mmu,
         [MO_BEUL] = helper_be_stl_mmu,
         [MO_BEUQ] = helper_be_stq_mmu,
     };
 
     int i;
 
     for (i = 0; i < ARRAY_SIZE(qemu_ld_helpers); ++i) {
         if (qemu_ld_helpers[i] == NULL) {
             continue;
         }
 
         /* May as well align the trampoline.  */
         while ((uintptr_t)s->code_ptr & 15) {
             tcg_out_nop(s);
         }
         qemu_ld_trampoline[i] = tcg_splitwx_to_rx(s->code_ptr);
 
         /* Set the retaddr operand.  */
         tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_O3, TCG_REG_O7);
         /* Tail call.  */
         tcg_out_jmpl_const(s, qemu_ld_helpers[i], true, true);
         /* delay slot -- set the env argument */
         tcg_out_mov_delay(s, TCG_REG_O0, TCG_AREG0);
     }
 
     for (i = 0; i < ARRAY_SIZE(qemu_st_helpers); ++i) {
         if (qemu_st_helpers[i] == NULL) {
             continue;
         }
 
         /* May as well align the trampoline.  */
         while ((uintptr_t)s->code_ptr & 15) {
             tcg_out_nop(s);
         }
         qemu_st_trampoline[i] = tcg_splitwx_to_rx(s->code_ptr);
 
         emit_extend(s, TCG_REG_O2, i);
 
         /* Set the retaddr operand.  */
         tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_O4, TCG_REG_O7);
 
         /* Tail call.  */
         tcg_out_jmpl_const(s, qemu_st_helpers[i], true, true);
         /* delay slot -- set the env argument */
         tcg_out_mov_delay(s, TCG_REG_O0, TCG_AREG0);
     }
 }
 #else
 static const tcg_insn_unit *qemu_unalign_ld_trampoline;
 static const tcg_insn_unit *qemu_unalign_st_trampoline;
 
 static void build_trampolines(TCGContext *s)
 {
     for (int ld = 0; ld < 2; ++ld) {
         void *helper;
 
         while ((uintptr_t)s->code_ptr & 15) {
             tcg_out_nop(s);
         }
 
         if (ld) {
             helper = helper_unaligned_ld;
             qemu_unalign_ld_trampoline = tcg_splitwx_to_rx(s->code_ptr);
         } else {
             helper = helper_unaligned_st;
             qemu_unalign_st_trampoline = tcg_splitwx_to_rx(s->code_ptr);
         }
 
         /* Tail call.  */
         tcg_out_jmpl_const(s, helper, true, true);
         /* delay slot -- set the env argument */
         tcg_out_mov_delay(s, TCG_REG_O0, TCG_AREG0);
     }
 }
 #endif
 
 /* Generate global QEMU prologue and epilogue code */
 static void tcg_target_qemu_prologue(TCGContext *s)
 {
     int tmp_buf_size, frame_size;
 
     /*
      * The TCG temp buffer is at the top of the frame, immediately
      * below the frame pointer.  Use the logical (aligned) offset here;
      * the stack bias is applied in temp_allocate_frame().
      */
     tmp_buf_size = CPU_TEMP_BUF_NLONGS * (int)sizeof(long);
     tcg_set_frame(s, TCG_REG_I6, -tmp_buf_size, tmp_buf_size);
 
     /*
      * TCG_TARGET_CALL_STACK_OFFSET includes the stack bias, but is
      * otherwise the minimal frame usable by callees.
      */
     frame_size = TCG_TARGET_CALL_STACK_OFFSET - TCG_TARGET_STACK_BIAS;
     frame_size += TCG_STATIC_CALL_ARGS_SIZE + tmp_buf_size;
     frame_size += TCG_TARGET_STACK_ALIGN - 1;
     frame_size &= -TCG_TARGET_STACK_ALIGN;
     tcg_out32(s, SAVE | INSN_RD(TCG_REG_O6) | INSN_RS1(TCG_REG_O6) |
               INSN_IMM13(-frame_size));
 
 #ifndef CONFIG_SOFTMMU
     if (guest_base != 0) {
         tcg_out_movi_int(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG,
                          guest_base, true, TCG_REG_T1);
         tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
     }
 #endif
 
     /* We choose TCG_REG_TB such that no move is required.  */
     if (USE_REG_TB) {
         QEMU_BUILD_BUG_ON(TCG_REG_TB != TCG_REG_I1);
         tcg_regset_set_reg(s->reserved_regs, TCG_REG_TB);
     }
 
     tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I1, 0, JMPL);
     /* delay slot */
     tcg_out_nop(s);
 
     /* Epilogue for goto_ptr.  */
     tcg_code_gen_epilogue = tcg_splitwx_to_rx(s->code_ptr);
     tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
     /* delay slot */
     tcg_out_movi_imm13(s, TCG_REG_O0, 0);
 
     build_trampolines(s);
 }
 
 static void tcg_out_nop_fill(tcg_insn_unit *p, int count)
 {
     int i;
     for (i = 0; i < count; ++i) {
         p[i] = NOP;
     }
 }
 
 #if defined(CONFIG_SOFTMMU)
 
 /* We expect to use a 13-bit negative offset from ENV.  */
 QEMU_BUILD_BUG_ON(TLB_MASK_TABLE_OFS(0) > 0);
 QEMU_BUILD_BUG_ON(TLB_MASK_TABLE_OFS(0) < -(1 << 12));
 
 /* Perform the TLB load and compare.
 
    Inputs:
    ADDRLO and ADDRHI contain the possible two parts of the address.
 
    MEM_INDEX and S_BITS are the memory context and log2 size of the load.
 
    WHICH is the offset into the CPUTLBEntry structure of the slot to read.
    This should be offsetof addr_read or addr_write.
 
    The result of the TLB comparison is in %[ix]cc.  The sanitized address
    is in the returned register, maybe %o0.  The TLB addend is in %o1.  */
 
 static TCGReg tcg_out_tlb_load(TCGContext *s, TCGReg addr, int mem_index,
                                MemOp opc, int which)
 {
     int fast_off = TLB_MASK_TABLE_OFS(mem_index);
     int mask_off = fast_off + offsetof(CPUTLBDescFast, mask);
     int table_off = fast_off + offsetof(CPUTLBDescFast, table);
     const TCGReg r0 = TCG_REG_O0;
     const TCGReg r1 = TCG_REG_O1;
     const TCGReg r2 = TCG_REG_O2;
     unsigned s_bits = opc & MO_SIZE;
     unsigned a_bits = get_alignment_bits(opc);
     tcg_target_long compare_mask;
 
     /* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx].  */
     tcg_out_ld(s, TCG_TYPE_PTR, r0, TCG_AREG0, mask_off);
     tcg_out_ld(s, TCG_TYPE_PTR, r1, TCG_AREG0, table_off);
 
     /* Extract the page index, shifted into place for tlb index.  */
     tcg_out_arithi(s, r2, addr, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS,
                    SHIFT_SRL);
     tcg_out_arith(s, r2, r2, r0, ARITH_AND);
 
     /* Add the tlb_table pointer, creating the CPUTLBEntry address into R2.  */
     tcg_out_arith(s, r2, r2, r1, ARITH_ADD);
 
     /* Load the tlb comparator and the addend.  */
     tcg_out_ld(s, TCG_TYPE_TL, r0, r2, which);
     tcg_out_ld(s, TCG_TYPE_PTR, r1, r2, offsetof(CPUTLBEntry, addend));
 
     /* Mask out the page offset, except for the required alignment.
        We don't support unaligned accesses.  */
     if (a_bits < s_bits) {
         a_bits = s_bits;
     }
     compare_mask = (tcg_target_ulong)TARGET_PAGE_MASK | ((1 << a_bits) - 1);
     if (check_fit_tl(compare_mask, 13)) {
         tcg_out_arithi(s, r2, addr, compare_mask, ARITH_AND);
     } else {
         tcg_out_movi(s, TCG_TYPE_TL, r2, compare_mask);
         tcg_out_arith(s, r2, addr, r2, ARITH_AND);
     }
     tcg_out_cmp(s, r0, r2, 0);
 
     /* If the guest address must be zero-extended, do so now.  */
     if (TARGET_LONG_BITS == 32) {
         tcg_out_arithi(s, r0, addr, 0, SHIFT_SRL);
         return r0;
     }
     return addr;
 }
 #endif /* CONFIG_SOFTMMU */
 
 static const int qemu_ld_opc[(MO_SSIZE | MO_BSWAP) + 1] = {
     [MO_UB]   = LDUB,
     [MO_SB]   = LDSB,
     [MO_UB | MO_LE] = LDUB,
     [MO_SB | MO_LE] = LDSB,
 
     [MO_BEUW] = LDUH,
     [MO_BESW] = LDSH,
     [MO_BEUL] = LDUW,
     [MO_BESL] = LDSW,
     [MO_BEUQ] = LDX,
     [MO_BESQ] = LDX,
 
     [MO_LEUW] = LDUH_LE,
     [MO_LESW] = LDSH_LE,
     [MO_LEUL] = LDUW_LE,
     [MO_LESL] = LDSW_LE,
     [MO_LEUQ] = LDX_LE,
     [MO_LESQ] = LDX_LE,
 };
 
 static const int qemu_st_opc[(MO_SIZE | MO_BSWAP) + 1] = {
     [MO_UB]   = STB,
 
     [MO_BEUW] = STH,
     [MO_BEUL] = STW,
     [MO_BEUQ] = STX,
 
     [MO_LEUW] = STH_LE,
     [MO_LEUL] = STW_LE,
     [MO_LEUQ] = STX_LE,
 };
 
 static void tcg_out_qemu_ld(TCGContext *s, TCGReg data, TCGReg addr,
                             MemOpIdx oi, bool is_64)
 {
     MemOp memop = get_memop(oi);
     tcg_insn_unit *label_ptr;
 
 #ifdef CONFIG_SOFTMMU
     unsigned memi = get_mmuidx(oi);
     TCGReg addrz;
     const tcg_insn_unit *func;
 
     addrz = tcg_out_tlb_load(s, addr, memi, memop,
                              offsetof(CPUTLBEntry, addr_read));
 
     /* The fast path is exactly one insn.  Thus we can perform the
        entire TLB Hit in the (annulled) delay slot of the branch
        over the TLB Miss case.  */
 
     /* beq,a,pt %[xi]cc, label0 */
     label_ptr = s->code_ptr;
     tcg_out_bpcc0(s, COND_E, BPCC_A | BPCC_PT
                   | (TARGET_LONG_BITS == 64 ? BPCC_XCC : BPCC_ICC), 0);
     /* delay slot */
     tcg_out_ldst_rr(s, data, addrz, TCG_REG_O1,
                     qemu_ld_opc[memop & (MO_BSWAP | MO_SSIZE)]);
 
     /* TLB Miss.  */
 
     tcg_out_mov(s, TCG_TYPE_REG, TCG_REG_O1, addrz);
 
     /* We use the helpers to extend SB and SW data, leaving the case
        of SL needing explicit extending below.  */
     if ((memop & MO_SSIZE) == MO_SL) {
         func = qemu_ld_trampoline[memop & (MO_BSWAP | MO_SIZE)];
     } else {
         func = qemu_ld_trampoline[memop & (MO_BSWAP | MO_SSIZE)];
     }
     tcg_debug_assert(func != NULL);
     tcg_out_call_nodelay(s, func, false);
     /* delay slot */
     tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_O2, oi);
 
     /* We let the helper sign-extend SB and SW, but leave SL for here.  */
     if (is_64 && (memop & MO_SSIZE) == MO_SL) {
         tcg_out_arithi(s, data, TCG_REG_O0, 0, SHIFT_SRA);
     } else {
         tcg_out_mov(s, TCG_TYPE_REG, data, TCG_REG_O0);
     }
 
     *label_ptr |= INSN_OFF19(tcg_ptr_byte_diff(s->code_ptr, label_ptr));
 #else
     TCGReg index = (guest_base ? TCG_GUEST_BASE_REG : TCG_REG_G0);
     unsigned a_bits = get_alignment_bits(memop);
     unsigned s_bits = memop & MO_SIZE;
     unsigned t_bits;
 
     if (TARGET_LONG_BITS == 32) {
         tcg_out_arithi(s, TCG_REG_T1, addr, 0, SHIFT_SRL);
         addr = TCG_REG_T1;
     }
 
     /*
      * Normal case: alignment equal to access size.
      */
     if (a_bits == s_bits) {
         tcg_out_ldst_rr(s, data, addr, index,
                         qemu_ld_opc[memop & (MO_BSWAP | MO_SSIZE)]);
         return;
     }
 
     /*
      * Test for at least natural alignment, and assume most accesses
      * will be aligned -- perform a straight load in the delay slot.
      * This is required to preserve atomicity for aligned accesses.
      */
     t_bits = MAX(a_bits, s_bits);
     tcg_debug_assert(t_bits < 13);
     tcg_out_arithi(s, TCG_REG_G0, addr, (1u << t_bits) - 1, ARITH_ANDCC);
 
     /* beq,a,pt %icc, label */
     label_ptr = s->code_ptr;
     tcg_out_bpcc0(s, COND_E, BPCC_A | BPCC_PT | BPCC_ICC, 0);
     /* delay slot */
     tcg_out_ldst_rr(s, data, addr, index,
                     qemu_ld_opc[memop & (MO_BSWAP | MO_SSIZE)]);
 
     if (a_bits >= s_bits) {
         /*
          * Overalignment: A successful alignment test will perform the memory
          * operation in the delay slot, and failure need only invoke the
          * handler for SIGBUS.
          */
         tcg_out_call_nodelay(s, qemu_unalign_ld_trampoline, false);
         /* delay slot -- move to low part of argument reg */
         tcg_out_mov_delay(s, TCG_REG_O1, addr);
     } else {
         /* Underalignment: load by pieces of minimum alignment. */
         int ld_opc, a_size, s_size, i;
 
         /*
          * Force full address into T1 early; avoids problems with
          * overlap between @addr and @data.
          */
         tcg_out_arith(s, TCG_REG_T1, addr, index, ARITH_ADD);
 
         a_size = 1 << a_bits;
         s_size = 1 << s_bits;
         if ((memop & MO_BSWAP) == MO_BE) {
             ld_opc = qemu_ld_opc[a_bits | MO_BE | (memop & MO_SIGN)];
             tcg_out_ldst(s, data, TCG_REG_T1, 0, ld_opc);
             ld_opc = qemu_ld_opc[a_bits | MO_BE];
             for (i = a_size; i < s_size; i += a_size) {
                 tcg_out_ldst(s, TCG_REG_T2, TCG_REG_T1, i, ld_opc);
                 tcg_out_arithi(s, data, data, a_size, SHIFT_SLLX);
                 tcg_out_arith(s, data, data, TCG_REG_T2, ARITH_OR);
             }
         } else if (a_bits == 0) {
             ld_opc = LDUB;
             tcg_out_ldst(s, data, TCG_REG_T1, 0, ld_opc);
             for (i = a_size; i < s_size; i += a_size) {
                 if ((memop & MO_SIGN) && i == s_size - a_size) {
                     ld_opc = LDSB;
                 }
                 tcg_out_ldst(s, TCG_REG_T2, TCG_REG_T1, i, ld_opc);
                 tcg_out_arithi(s, TCG_REG_T2, TCG_REG_T2, i * 8, SHIFT_SLLX);
                 tcg_out_arith(s, data, data, TCG_REG_T2, ARITH_OR);
             }
         } else {
             ld_opc = qemu_ld_opc[a_bits | MO_LE];
             tcg_out_ldst_rr(s, data, TCG_REG_T1, TCG_REG_G0, ld_opc);
             for (i = a_size; i < s_size; i += a_size) {
                 tcg_out_arithi(s, TCG_REG_T1, TCG_REG_T1, a_size, ARITH_ADD);
                 if ((memop & MO_SIGN) && i == s_size - a_size) {
                     ld_opc = qemu_ld_opc[a_bits | MO_LE | MO_SIGN];
                 }
                 tcg_out_ldst_rr(s, TCG_REG_T2, TCG_REG_T1, TCG_REG_G0, ld_opc);
                 tcg_out_arithi(s, TCG_REG_T2, TCG_REG_T2, i * 8, SHIFT_SLLX);
                 tcg_out_arith(s, data, data, TCG_REG_T2, ARITH_OR);
             }
         }
     }
 
     *label_ptr |= INSN_OFF19(tcg_ptr_byte_diff(s->code_ptr, label_ptr));
 #endif /* CONFIG_SOFTMMU */
 }
 
 static void tcg_out_qemu_st(TCGContext *s, TCGReg data, TCGReg addr,
                             MemOpIdx oi)
 {
     MemOp memop = get_memop(oi);
     tcg_insn_unit *label_ptr;
 
 #ifdef CONFIG_SOFTMMU
     unsigned memi = get_mmuidx(oi);
     TCGReg addrz;
     const tcg_insn_unit *func;
 
     addrz = tcg_out_tlb_load(s, addr, memi, memop,
                              offsetof(CPUTLBEntry, addr_write));
 
     /* The fast path is exactly one insn.  Thus we can perform the entire
        TLB Hit in the (annulled) delay slot of the branch over TLB Miss.  */
     /* beq,a,pt %[xi]cc, label0 */
     label_ptr = s->code_ptr;
     tcg_out_bpcc0(s, COND_E, BPCC_A | BPCC_PT
                   | (TARGET_LONG_BITS == 64 ? BPCC_XCC : BPCC_ICC), 0);
     /* delay slot */
     tcg_out_ldst_rr(s, data, addrz, TCG_REG_O1,
                     qemu_st_opc[memop & (MO_BSWAP | MO_SIZE)]);
 
     /* TLB Miss.  */
 
     tcg_out_mov(s, TCG_TYPE_REG, TCG_REG_O1, addrz);
     tcg_out_mov(s, TCG_TYPE_REG, TCG_REG_O2, data);
 
     func = qemu_st_trampoline[memop & (MO_BSWAP | MO_SIZE)];
     tcg_debug_assert(func != NULL);
     tcg_out_call_nodelay(s, func, false);
     /* delay slot */
     tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_O3, oi);
 
     *label_ptr |= INSN_OFF19(tcg_ptr_byte_diff(s->code_ptr, label_ptr));
 #else
     TCGReg index = (guest_base ? TCG_GUEST_BASE_REG : TCG_REG_G0);
     unsigned a_bits = get_alignment_bits(memop);
     unsigned s_bits = memop & MO_SIZE;
     unsigned t_bits;
 
     if (TARGET_LONG_BITS == 32) {
         tcg_out_arithi(s, TCG_REG_T1, addr, 0, SHIFT_SRL);
         addr = TCG_REG_T1;
     }
 
     /*
      * Normal case: alignment equal to access size.
      */
     if (a_bits == s_bits) {
         tcg_out_ldst_rr(s, data, addr, index,
                         qemu_st_opc[memop & (MO_BSWAP | MO_SIZE)]);
         return;
     }
 
     /*
      * Test for at least natural alignment, and assume most accesses
      * will be aligned -- perform a straight store in the delay slot.
      * This is required to preserve atomicity for aligned accesses.
      */
     t_bits = MAX(a_bits, s_bits);
     tcg_debug_assert(t_bits < 13);
     tcg_out_arithi(s, TCG_REG_G0, addr, (1u << t_bits) - 1, ARITH_ANDCC);
 
     /* beq,a,pt %icc, label */
     label_ptr = s->code_ptr;
     tcg_out_bpcc0(s, COND_E, BPCC_A | BPCC_PT | BPCC_ICC, 0);
     /* delay slot */
     tcg_out_ldst_rr(s, data, addr, index,
                     qemu_st_opc[memop & (MO_BSWAP | MO_SIZE)]);
 
     if (a_bits >= s_bits) {
         /*
          * Overalignment: A successful alignment test will perform the memory
          * operation in the delay slot, and failure need only invoke the
          * handler for SIGBUS.
          */
         tcg_out_call_nodelay(s, qemu_unalign_st_trampoline, false);
         /* delay slot -- move to low part of argument reg */
         tcg_out_mov_delay(s, TCG_REG_O1, addr);
     } else {
         /* Underalignment: store by pieces of minimum alignment. */
         int st_opc, a_size, s_size, i;
 
         /*
          * Force full address into T1 early; avoids problems with
          * overlap between @addr and @data.
          */
         tcg_out_arith(s, TCG_REG_T1, addr, index, ARITH_ADD);
 
         a_size = 1 << a_bits;
         s_size = 1 << s_bits;
         if ((memop & MO_BSWAP) == MO_BE) {
             st_opc = qemu_st_opc[a_bits | MO_BE];
             for (i = 0; i < s_size; i += a_size) {
                 TCGReg d = data;
                 int shift = (s_size - a_size - i) * 8;
                 if (shift) {
                     d = TCG_REG_T2;
                     tcg_out_arithi(s, d, data, shift, SHIFT_SRLX);
                 }
                 tcg_out_ldst(s, d, TCG_REG_T1, i, st_opc);
             }
         } else if (a_bits == 0) {
             tcg_out_ldst(s, data, TCG_REG_T1, 0, STB);
             for (i = 1; i < s_size; i++) {
                 tcg_out_arithi(s, TCG_REG_T2, data, i * 8, SHIFT_SRLX);
                 tcg_out_ldst(s, TCG_REG_T2, TCG_REG_T1, i, STB);
             }
         } else {
             /* Note that ST*A with immediate asi must use indexed address. */
             st_opc = qemu_st_opc[a_bits + MO_LE];
             tcg_out_ldst_rr(s, data, TCG_REG_T1, TCG_REG_G0, st_opc);
             for (i = a_size; i < s_size; i += a_size) {
                 tcg_out_arithi(s, TCG_REG_T2, data, i * 8, SHIFT_SRLX);
                 tcg_out_arithi(s, TCG_REG_T1, TCG_REG_T1, a_size, ARITH_ADD);
                 tcg_out_ldst_rr(s, TCG_REG_T2, TCG_REG_T1, TCG_REG_G0, st_opc);
             }
         }
     }
 
     *label_ptr |= INSN_OFF19(tcg_ptr_byte_diff(s->code_ptr, label_ptr));
 #endif /* CONFIG_SOFTMMU */
 }
 
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS])
 {
     TCGArg a0, a1, a2;
     int c, c2;
 
     /* Hoist the loads of the most common arguments.  */
     a0 = args[0];
     a1 = args[1];
     a2 = args[2];
     c2 = const_args[2];
 
     switch (opc) {
     case INDEX_op_exit_tb:
         if (check_fit_ptr(a0, 13)) {
             tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
             tcg_out_movi_imm13(s, TCG_REG_O0, a0);
             break;
         } else if (USE_REG_TB) {
             intptr_t tb_diff = tcg_tbrel_diff(s, (void *)a0);
             if (check_fit_ptr(tb_diff, 13)) {
                 tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
                 /* Note that TCG_REG_TB has been unwound to O1.  */
                 tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O1, tb_diff, ARITH_ADD);
                 break;
             }
         }
         tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I0, a0 & ~0x3ff);
         tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
         tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O0, a0 & 0x3ff, ARITH_OR);
         break;
     case INDEX_op_goto_tb:
         if (s->tb_jmp_insn_offset) {
             /* direct jump method */
             if (USE_REG_TB) {
                 /* make sure the patch is 8-byte aligned.  */
                 if ((intptr_t)s->code_ptr & 4) {
                     tcg_out_nop(s);
                 }
                 s->tb_jmp_insn_offset[a0] = tcg_current_code_size(s);
                 tcg_out_sethi(s, TCG_REG_T1, 0);
                 tcg_out_arithi(s, TCG_REG_T1, TCG_REG_T1, 0, ARITH_OR);
                 tcg_out_arith(s, TCG_REG_G0, TCG_REG_TB, TCG_REG_T1, JMPL);
                 tcg_out_arith(s, TCG_REG_TB, TCG_REG_TB, TCG_REG_T1, ARITH_ADD);
             } else {
                 s->tb_jmp_insn_offset[a0] = tcg_current_code_size(s);
                 tcg_out32(s, CALL);
                 tcg_out_nop(s);
             }
         } else {
             /* indirect jump method */
             tcg_out_ld_ptr(s, TCG_REG_TB, s->tb_jmp_target_addr + a0);
             tcg_out_arithi(s, TCG_REG_G0, TCG_REG_TB, 0, JMPL);
             tcg_out_nop(s);
         }
         set_jmp_reset_offset(s, a0);
 
         /* For the unlinked path of goto_tb, we need to reset
            TCG_REG_TB to the beginning of this TB.  */
         if (USE_REG_TB) {
             c = -tcg_current_code_size(s);
             if (check_fit_i32(c, 13)) {
                 tcg_out_arithi(s, TCG_REG_TB, TCG_REG_TB, c, ARITH_ADD);
             } else {
                 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_T1, c);
                 tcg_out_arith(s, TCG_REG_TB, TCG_REG_TB,
                               TCG_REG_T1, ARITH_ADD);
             }
         }
         break;
     case INDEX_op_goto_ptr:
         tcg_out_arithi(s, TCG_REG_G0, a0, 0, JMPL);
         if (USE_REG_TB) {
             tcg_out_mov_delay(s, TCG_REG_TB, a0);
         } else {
             tcg_out_nop(s);
         }
         break;
     case INDEX_op_br:
         tcg_out_bpcc(s, COND_A, BPCC_PT, arg_label(a0));
         tcg_out_nop(s);
         break;
 
 #define OP_32_64(x)                             \
         glue(glue(case INDEX_op_, x), _i32):    \
         glue(glue(case INDEX_op_, x), _i64)
 
     OP_32_64(ld8u):
         tcg_out_ldst(s, a0, a1, a2, LDUB);
         break;
     OP_32_64(ld8s):
         tcg_out_ldst(s, a0, a1, a2, LDSB);
         break;
     OP_32_64(ld16u):
         tcg_out_ldst(s, a0, a1, a2, LDUH);
         break;
     OP_32_64(ld16s):
         tcg_out_ldst(s, a0, a1, a2, LDSH);
         break;
     case INDEX_op_ld_i32:
     case INDEX_op_ld32u_i64:
         tcg_out_ldst(s, a0, a1, a2, LDUW);
         break;
     OP_32_64(st8):
         tcg_out_ldst(s, a0, a1, a2, STB);
         break;
     OP_32_64(st16):
         tcg_out_ldst(s, a0, a1, a2, STH);
         break;
     case INDEX_op_st_i32:
     case INDEX_op_st32_i64:
         tcg_out_ldst(s, a0, a1, a2, STW);
         break;
     OP_32_64(add):
         c = ARITH_ADD;
         goto gen_arith;
     OP_32_64(sub):
         c = ARITH_SUB;
         goto gen_arith;
     OP_32_64(and):
         c = ARITH_AND;
         goto gen_arith;
     OP_32_64(andc):
         c = ARITH_ANDN;
         goto gen_arith;
     OP_32_64(or):
         c = ARITH_OR;
         goto gen_arith;
     OP_32_64(orc):
         c = ARITH_ORN;
         goto gen_arith;
     OP_32_64(xor):
         c = ARITH_XOR;
         goto gen_arith;
     case INDEX_op_shl_i32:
         c = SHIFT_SLL;
     do_shift32:
         /* Limit immediate shift count lest we create an illegal insn.  */
         tcg_out_arithc(s, a0, a1, a2 & 31, c2, c);
         break;
     case INDEX_op_shr_i32:
         c = SHIFT_SRL;
         goto do_shift32;
     case INDEX_op_sar_i32:
         c = SHIFT_SRA;
         goto do_shift32;
     case INDEX_op_mul_i32:
         c = ARITH_UMUL;
         goto gen_arith;
 
     OP_32_64(neg):
 	c = ARITH_SUB;
 	goto gen_arith1;
     OP_32_64(not):
 	c = ARITH_ORN;
 	goto gen_arith1;
 
     case INDEX_op_div_i32:
         tcg_out_div32(s, a0, a1, a2, c2, 0);
         break;
     case INDEX_op_divu_i32:
         tcg_out_div32(s, a0, a1, a2, c2, 1);
         break;
 
     case INDEX_op_brcond_i32:
         tcg_out_brcond_i32(s, a2, a0, a1, const_args[1], arg_label(args[3]));
         break;
     case INDEX_op_setcond_i32:
         tcg_out_setcond_i32(s, args[3], a0, a1, a2, c2);
         break;
     case INDEX_op_movcond_i32:
         tcg_out_movcond_i32(s, args[5], a0, a1, a2, c2, args[3], const_args[3]);
         break;
 
     case INDEX_op_add2_i32:
         tcg_out_addsub2_i32(s, args[0], args[1], args[2], args[3],
                             args[4], const_args[4], args[5], const_args[5],
                             ARITH_ADDCC, ARITH_ADDC);
         break;
     case INDEX_op_sub2_i32:
         tcg_out_addsub2_i32(s, args[0], args[1], args[2], args[3],
                             args[4], const_args[4], args[5], const_args[5],
                             ARITH_SUBCC, ARITH_SUBC);
         break;
     case INDEX_op_mulu2_i32:
         c = ARITH_UMUL;
         goto do_mul2;
     case INDEX_op_muls2_i32:
         c = ARITH_SMUL;
     do_mul2:
         /* The 32-bit multiply insns produce a full 64-bit result. */
         tcg_out_arithc(s, a0, a2, args[3], const_args[3], c);
         tcg_out_arithi(s, a1, a0, 32, SHIFT_SRLX);
         break;
 
     case INDEX_op_qemu_ld_i32:
         tcg_out_qemu_ld(s, a0, a1, a2, false);
         break;
     case INDEX_op_qemu_ld_i64:
         tcg_out_qemu_ld(s, a0, a1, a2, true);
         break;
     case INDEX_op_qemu_st_i32:
     case INDEX_op_qemu_st_i64:
         tcg_out_qemu_st(s, a0, a1, a2);
         break;
 
     case INDEX_op_ld32s_i64:
         tcg_out_ldst(s, a0, a1, a2, LDSW);
         break;
     case INDEX_op_ld_i64:
         tcg_out_ldst(s, a0, a1, a2, LDX);
         break;
     case INDEX_op_st_i64:
         tcg_out_ldst(s, a0, a1, a2, STX);
         break;
     case INDEX_op_shl_i64:
         c = SHIFT_SLLX;
     do_shift64:
         /* Limit immediate shift count lest we create an illegal insn.  */
         tcg_out_arithc(s, a0, a1, a2 & 63, c2, c);
         break;
     case INDEX_op_shr_i64:
         c = SHIFT_SRLX;
         goto do_shift64;
     case INDEX_op_sar_i64:
         c = SHIFT_SRAX;
         goto do_shift64;
     case INDEX_op_mul_i64:
         c = ARITH_MULX;
         goto gen_arith;
     case INDEX_op_div_i64:
         c = ARITH_SDIVX;
         goto gen_arith;
     case INDEX_op_divu_i64:
         c = ARITH_UDIVX;
         goto gen_arith;
     case INDEX_op_ext_i32_i64:
     case INDEX_op_ext32s_i64:
         tcg_out_arithi(s, a0, a1, 0, SHIFT_SRA);
         break;
     case INDEX_op_extu_i32_i64:
     case INDEX_op_ext32u_i64:
         tcg_out_arithi(s, a0, a1, 0, SHIFT_SRL);
         break;
     case INDEX_op_extrl_i64_i32:
         tcg_out_mov(s, TCG_TYPE_I32, a0, a1);
         break;
     case INDEX_op_extrh_i64_i32:
         tcg_out_arithi(s, a0, a1, 32, SHIFT_SRLX);
         break;
 
     case INDEX_op_brcond_i64:
         tcg_out_brcond_i64(s, a2, a0, a1, const_args[1], arg_label(args[3]));
         break;
     case INDEX_op_setcond_i64:
         tcg_out_setcond_i64(s, args[3], a0, a1, a2, c2);
         break;
     case INDEX_op_movcond_i64:
         tcg_out_movcond_i64(s, args[5], a0, a1, a2, c2, args[3], const_args[3]);
         break;
     case INDEX_op_add2_i64:
         tcg_out_addsub2_i64(s, args[0], args[1], args[2], args[3], args[4],
                             const_args[4], args[5], const_args[5], false);
         break;
     case INDEX_op_sub2_i64:
         tcg_out_addsub2_i64(s, args[0], args[1], args[2], args[3], args[4],
                             const_args[4], args[5], const_args[5], true);
         break;
     case INDEX_op_muluh_i64:
         tcg_out_arith(s, args[0], args[1], args[2], ARITH_UMULXHI);
         break;
 
     gen_arith:
         tcg_out_arithc(s, a0, a1, a2, c2, c);
         break;
 
     gen_arith1:
 	tcg_out_arithc(s, a0, TCG_REG_G0, a1, const_args[1], c);
 	break;
 
     case INDEX_op_mb:
         tcg_out_mb(s, a0);
         break;
 
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     case INDEX_op_call:     /* Always emitted via tcg_out_call.  */
     default:
         tcg_abort();
     }
 }
 
 static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
 {
     switch (op) {
     case INDEX_op_goto_ptr:
         return C_O0_I1(r);
 
     case INDEX_op_ld8u_i32:
     case INDEX_op_ld8u_i64:
     case INDEX_op_ld8s_i32:
     case INDEX_op_ld8s_i64:
     case INDEX_op_ld16u_i32:
     case INDEX_op_ld16u_i64:
     case INDEX_op_ld16s_i32:
     case INDEX_op_ld16s_i64:
     case INDEX_op_ld_i32:
     case INDEX_op_ld32u_i64:
     case INDEX_op_ld32s_i64:
     case INDEX_op_ld_i64:
     case INDEX_op_neg_i32:
     case INDEX_op_neg_i64:
     case INDEX_op_not_i32:
     case INDEX_op_not_i64:
     case INDEX_op_ext32s_i64:
     case INDEX_op_ext32u_i64:
     case INDEX_op_ext_i32_i64:
     case INDEX_op_extu_i32_i64:
     case INDEX_op_extrl_i64_i32:
     case INDEX_op_extrh_i64_i32:
         return C_O1_I1(r, r);
 
     case INDEX_op_st8_i32:
     case INDEX_op_st8_i64:
     case INDEX_op_st16_i32:
     case INDEX_op_st16_i64:
     case INDEX_op_st_i32:
     case INDEX_op_st32_i64:
     case INDEX_op_st_i64:
         return C_O0_I2(rZ, r);
 
     case INDEX_op_add_i32:
     case INDEX_op_add_i64:
     case INDEX_op_mul_i32:
     case INDEX_op_mul_i64:
     case INDEX_op_div_i32:
     case INDEX_op_div_i64:
     case INDEX_op_divu_i32:
     case INDEX_op_divu_i64:
     case INDEX_op_sub_i32:
     case INDEX_op_sub_i64:
     case INDEX_op_and_i32:
     case INDEX_op_and_i64:
     case INDEX_op_andc_i32:
     case INDEX_op_andc_i64:
     case INDEX_op_or_i32:
     case INDEX_op_or_i64:
     case INDEX_op_orc_i32:
     case INDEX_op_orc_i64:
     case INDEX_op_xor_i32:
     case INDEX_op_xor_i64:
     case INDEX_op_shl_i32:
     case INDEX_op_shl_i64:
     case INDEX_op_shr_i32:
     case INDEX_op_shr_i64:
     case INDEX_op_sar_i32:
     case INDEX_op_sar_i64:
     case INDEX_op_setcond_i32:
     case INDEX_op_setcond_i64:
         return C_O1_I2(r, rZ, rJ);
 
     case INDEX_op_brcond_i32:
     case INDEX_op_brcond_i64:
         return C_O0_I2(rZ, rJ);
     case INDEX_op_movcond_i32:
     case INDEX_op_movcond_i64:
         return C_O1_I4(r, rZ, rJ, rI, 0);
     case INDEX_op_add2_i32:
     case INDEX_op_add2_i64:
     case INDEX_op_sub2_i32:
     case INDEX_op_sub2_i64:
         return C_O2_I4(r, r, rZ, rZ, rJ, rJ);
     case INDEX_op_mulu2_i32:
     case INDEX_op_muls2_i32:
         return C_O2_I2(r, r, rZ, rJ);
     case INDEX_op_muluh_i64:
         return C_O1_I2(r, r, r);
 
     case INDEX_op_qemu_ld_i32:
     case INDEX_op_qemu_ld_i64:
         return C_O1_I1(r, s);
     case INDEX_op_qemu_st_i32:
     case INDEX_op_qemu_st_i64:
         return C_O0_I2(sZ, s);
 
     default:
         g_assert_not_reached();
     }
 }
 
 static void tcg_target_init(TCGContext *s)
 {
     /*
      * Only probe for the platform and capabilities if we haven't already
      * determined maximum values at compile time.
      */
 #ifndef use_vis3_instructions
     {
         unsigned long hwcap = qemu_getauxval(AT_HWCAP);
         use_vis3_instructions = (hwcap & HWCAP_SPARC_VIS3) != 0;
     }
 #endif
 
     tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS;
     tcg_target_available_regs[TCG_TYPE_I64] = ALL_GENERAL_REGS;
 
     tcg_target_call_clobber_regs = 0;
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G1);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G2);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G3);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G4);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G5);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G6);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G7);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O0);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O1);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O2);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O3);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O4);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O5);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O6);
     tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O7);
 
     s->reserved_regs = 0;
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_G0); /* zero */
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_G6); /* reserved for os */
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_G7); /* thread pointer */
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_I6); /* frame pointer */
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_I7); /* return address */
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_O6); /* stack pointer */
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_T1); /* for internal use */
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_T2); /* for internal use */
 }
 
 #define ELF_HOST_MACHINE  EM_SPARCV9
 
 typedef struct {
     DebugFrameHeader h;
     uint8_t fde_def_cfa[4];
     uint8_t fde_win_save;
     uint8_t fde_ret_save[3];
 } DebugFrame;
 
 static const DebugFrame debug_frame = {
     .h.cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */
     .h.cie.id = -1,
     .h.cie.version = 1,
     .h.cie.code_align = 1,
     .h.cie.data_align = -sizeof(void *) & 0x7f,
     .h.cie.return_column = 15,            /* o7 */
 
     /* Total FDE size does not include the "len" member.  */
     .h.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, h.fde.cie_offset),
 
     .fde_def_cfa = {
         12, 30,                         /* DW_CFA_def_cfa i6, 2047 */
         (2047 & 0x7f) | 0x80, (2047 >> 7)
     },
     .fde_win_save = 0x2d,               /* DW_CFA_GNU_window_save */
     .fde_ret_save = { 9, 15, 31 },      /* DW_CFA_register o7, i7 */
 };
 
 void tcg_register_jit(const void *buf, size_t buf_size)
 {
     tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame));
 }
 
 void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_rx,
                               uintptr_t jmp_rw, uintptr_t addr)
 {
     intptr_t tb_disp = addr - tc_ptr;
     intptr_t br_disp = addr - jmp_rx;
     tcg_insn_unit i1, i2;
 
     /* We can reach the entire address space for ILP32.
        For LP64, the code_gen_buffer can't be larger than 2GB.  */
     tcg_debug_assert(tb_disp == (int32_t)tb_disp);
     tcg_debug_assert(br_disp == (int32_t)br_disp);
 
     if (!USE_REG_TB) {
         qatomic_set((uint32_t *)jmp_rw,
 		    deposit32(CALL, 0, 30, br_disp >> 2));
         flush_idcache_range(jmp_rx, jmp_rw, 4);
         return;
     }
 
     /* This does not exercise the range of the branch, but we do
        still need to be able to load the new value of TCG_REG_TB.
        But this does still happen quite often.  */
     if (check_fit_ptr(tb_disp, 13)) {
         /* ba,pt %icc, addr */
         i1 = (INSN_OP(0) | INSN_OP2(1) | INSN_COND(COND_A)
               | BPCC_ICC | BPCC_PT | INSN_OFF19(br_disp));
         i2 = (ARITH_ADD | INSN_RD(TCG_REG_TB) | INSN_RS1(TCG_REG_TB)
               | INSN_IMM13(tb_disp));
     } else if (tb_disp >= 0) {
         i1 = SETHI | INSN_RD(TCG_REG_T1) | ((tb_disp & 0xfffffc00) >> 10);
         i2 = (ARITH_OR | INSN_RD(TCG_REG_T1) | INSN_RS1(TCG_REG_T1)
               | INSN_IMM13(tb_disp & 0x3ff));
     } else {
         i1 = SETHI | INSN_RD(TCG_REG_T1) | ((~tb_disp & 0xfffffc00) >> 10);
         i2 = (ARITH_XOR | INSN_RD(TCG_REG_T1) | INSN_RS1(TCG_REG_T1)
               | INSN_IMM13((tb_disp & 0x3ff) | -0x400));
     }
 
     qatomic_set((uint64_t *)jmp_rw, deposit64(i2, 32, 32, i1));
     flush_idcache_range(jmp_rx, jmp_rw, 8);
 }