target-tilegx: Framework for decoding bundles

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>

1 files changed, 1145 insertions, 0 deletions

diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c
new file mode 100644
index 0000000000..58289b7366
--- /dev/null
+++ b/target-tilegx/translate.c
@@ -0,0 +1,1145 @@
+/*
+ * QEMU TILE-Gx CPU
+ *
+ *  Copyright (c) 2015 Chen Gang
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see
+ * <http://www.gnu.org/licenses/lgpl-2.1.html>
+ */
+
+#include "cpu.h"
+#include "qemu/log.h"
+#include "disas/disas.h"
+#include "tcg-op.h"
+#include "exec/cpu_ldst.h"
+#include "opcode_tilegx.h"
+
+#define FMT64X                          "%016" PRIx64
+
+static TCGv_ptr cpu_env;
+static TCGv cpu_pc;
+static TCGv cpu_regs[TILEGX_R_COUNT];
+
+static const char * const reg_names[64] = {
+     "r0",  "r1",  "r2",  "r3",  "r4",  "r5",  "r6",  "r7",
+     "r8",  "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+    "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
+    "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
+    "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
+    "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
+    "r48", "r49", "r50", "r51",  "bp",  "tp",  "sp",  "lr",
+    "sn", "idn0", "idn1", "udn0", "udn1", "udn2", "udn2", "zero"
+};
+
+/* Modified registers are cached in temporaries until the end of the bundle. */
+typedef struct {
+    unsigned reg;
+    TCGv val;
+} DisasContextTemp;
+
+#define MAX_WRITEBACK 4
+
+/* This is the state at translation time.  */
+typedef struct {
+    uint64_t pc;		/* Current pc */
+
+    TCGv zero;                  /* For zero register */
+
+    DisasContextTemp wb[MAX_WRITEBACK];
+    int num_wb;
+    int mmuidx;
+    bool exit_tb;
+
+    struct {
+        TCGCond cond;    /* branch condition */
+        TCGv dest;       /* branch destination */
+        TCGv val1;       /* value to be compared against zero, for cond */
+    } jmp;               /* Jump object, only once in each TB block */
+} DisasContext;
+
+#include "exec/gen-icount.h"
+
+/* Differentiate the various pipe encodings.  */
+#define TY_X0  0
+#define TY_X1  1
+#define TY_Y0  2
+#define TY_Y1  3
+
+/* Remerge the base opcode and extension fields for switching.
+   The X opcode fields are 3 bits; Y0/Y1 opcode fields are 4 bits;
+   Y2 opcode field is 2 bits.  */
+#define OE(OP, EXT, XY) (TY_##XY + OP * 4 + EXT * 64)
+
+/* Similar, but for Y2 only.  */
+#define OEY2(OP, MODE) (OP + MODE * 4)
+
+/* Similar, but make sure opcode names match up.  */
+#define OE_RR_X0(E)    OE(RRR_0_OPCODE_X0, E##_UNARY_OPCODE_X0, X0)
+#define OE_RR_X1(E)    OE(RRR_0_OPCODE_X1, E##_UNARY_OPCODE_X1, X1)
+#define OE_RR_Y0(E)    OE(RRR_1_OPCODE_Y0, E##_UNARY_OPCODE_Y0, Y0)
+#define OE_RR_Y1(E)    OE(RRR_1_OPCODE_Y1, E##_UNARY_OPCODE_Y1, Y1)
+#define OE_RRR(E,N,XY) OE(RRR_##N##_OPCODE_##XY, E##_RRR_##N##_OPCODE_##XY, XY)
+#define OE_IM(E,XY)    OE(IMM8_OPCODE_##XY, E##_IMM8_OPCODE_##XY, XY)
+#define OE_SH(E,XY)    OE(SHIFT_OPCODE_##XY, E##_SHIFT_OPCODE_##XY, XY)
+
+
+static void gen_exception(DisasContext *dc, TileExcp num)
+{
+    TCGv_i32 tmp;
+
+    tcg_gen_movi_tl(cpu_pc, dc->pc + TILEGX_BUNDLE_SIZE_IN_BYTES);
+
+    tmp = tcg_const_i32(num);
+    gen_helper_exception(cpu_env, tmp);
+    tcg_temp_free_i32(tmp);
+    dc->exit_tb = true;
+}
+
+static TileExcp gen_rr_opcode(DisasContext *dc, unsigned opext,
+                              unsigned dest, unsigned srca)
+{
+    const char *mnemonic;
+
+    /* Eliminate nops before doing anything else.  */
+    switch (opext) {
+    case OE_RR_Y0(NOP):
+    case OE_RR_Y1(NOP):
+    case OE_RR_X0(NOP):
+    case OE_RR_X1(NOP):
+        mnemonic = "nop";
+        goto do_nop;
+    case OE_RR_Y0(FNOP):
+    case OE_RR_Y1(FNOP):
+    case OE_RR_X0(FNOP):
+    case OE_RR_X1(FNOP):
+        mnemonic = "fnop";
+    do_nop:
+        if (srca || dest) {
+            return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+        }
+        qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s", mnemonic);
+        return TILEGX_EXCP_NONE;
+    }
+
+    switch (opext) {
+    case OE_RR_X0(CNTLZ):
+    case OE_RR_Y0(CNTLZ):
+    case OE_RR_X0(CNTTZ):
+    case OE_RR_Y0(CNTTZ):
+    case OE_RR_X1(DRAIN):
+    case OE_RR_X1(DTLBPR):
+    case OE_RR_X1(FINV):
+    case OE_RR_X1(FLUSHWB):
+    case OE_RR_X1(FLUSH):
+    case OE_RR_X0(FSINGLE_PACK1):
+    case OE_RR_Y0(FSINGLE_PACK1):
+    case OE_RR_X1(ICOH):
+    case OE_RR_X1(ILL):
+    case OE_RR_Y1(ILL):
+    case OE_RR_X1(INV):
+    case OE_RR_X1(IRET):
+    case OE_RR_X1(JALRP):
+    case OE_RR_Y1(JALRP):
+    case OE_RR_X1(JALR):
+    case OE_RR_Y1(JALR):
+    case OE_RR_X1(JRP):
+    case OE_RR_Y1(JRP):
+    case OE_RR_X1(JR):
+    case OE_RR_Y1(JR):
+    case OE_RR_X1(LD1S):
+    case OE_RR_X1(LD1U):
+    case OE_RR_X1(LD2S):
+    case OE_RR_X1(LD2U):
+    case OE_RR_X1(LD4S):
+    case OE_RR_X1(LD4U):
+    case OE_RR_X1(LDNA):
+    case OE_RR_X1(LDNT1S):
+    case OE_RR_X1(LDNT1U):
+    case OE_RR_X1(LDNT2S):
+    case OE_RR_X1(LDNT2U):
+    case OE_RR_X1(LDNT4S):
+    case OE_RR_X1(LDNT4U):
+    case OE_RR_X1(LDNT):
+    case OE_RR_X1(LD):
+    case OE_RR_X1(LNK):
+    case OE_RR_Y1(LNK):
+    case OE_RR_X1(MF):
+    case OE_RR_X1(NAP):
+    case OE_RR_X0(PCNT):
+    case OE_RR_Y0(PCNT):
+    case OE_RR_X0(REVBITS):
+    case OE_RR_Y0(REVBITS):
+    case OE_RR_X0(REVBYTES):
+    case OE_RR_Y0(REVBYTES):
+    case OE_RR_X1(SWINT0):
+    case OE_RR_X1(SWINT1):
+    case OE_RR_X1(SWINT2):
+    case OE_RR_X1(SWINT3):
+    case OE_RR_X0(TBLIDXB0):
+    case OE_RR_Y0(TBLIDXB0):
+    case OE_RR_X0(TBLIDXB1):
+    case OE_RR_Y0(TBLIDXB1):
+    case OE_RR_X0(TBLIDXB2):
+    case OE_RR_Y0(TBLIDXB2):
+    case OE_RR_X0(TBLIDXB3):
+    case OE_RR_Y0(TBLIDXB3):
+    case OE_RR_X1(WH64):
+    default:
+        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+    }
+
+    qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s %s, %s", mnemonic,
+                  reg_names[dest], reg_names[srca]);
+    return TILEGX_EXCP_NONE;
+}
+
+static TileExcp gen_rrr_opcode(DisasContext *dc, unsigned opext,
+                               unsigned dest, unsigned srca, unsigned srcb)
+{
+    const char *mnemonic;
+
+    switch (opext) {
+    case OE_RRR(ADDXSC, 0, X0):
+    case OE_RRR(ADDXSC, 0, X1):
+    case OE_RRR(ADDX, 0, X0):
+    case OE_RRR(ADDX, 0, X1):
+    case OE_RRR(ADDX, 0, Y0):
+    case OE_RRR(ADDX, 0, Y1):
+    case OE_RRR(ADD, 0, X0):
+    case OE_RRR(ADD, 0, X1):
+    case OE_RRR(ADD, 0, Y0):
+    case OE_RRR(ADD, 0, Y1):
+    case OE_RRR(AND, 0, X0):
+    case OE_RRR(AND, 0, X1):
+    case OE_RRR(AND, 5, Y0):
+    case OE_RRR(AND, 5, Y1):
+    case OE_RRR(CMOVEQZ, 0, X0):
+    case OE_RRR(CMOVEQZ, 4, Y0):
+    case OE_RRR(CMOVNEZ, 0, X0):
+    case OE_RRR(CMOVNEZ, 4, Y0):
+    case OE_RRR(CMPEQ, 0, X0):
+    case OE_RRR(CMPEQ, 0, X1):
+    case OE_RRR(CMPEQ, 3, Y0):
+    case OE_RRR(CMPEQ, 3, Y1):
+    case OE_RRR(CMPEXCH4, 0, X1):
+    case OE_RRR(CMPEXCH, 0, X1):
+    case OE_RRR(CMPLES, 0, X0):
+    case OE_RRR(CMPLES, 0, X1):
+    case OE_RRR(CMPLES, 2, Y0):
+    case OE_RRR(CMPLES, 2, Y1):
+    case OE_RRR(CMPLEU, 0, X0):
+    case OE_RRR(CMPLEU, 0, X1):
+    case OE_RRR(CMPLEU, 2, Y0):
+    case OE_RRR(CMPLEU, 2, Y1):
+    case OE_RRR(CMPLTS, 0, X0):
+    case OE_RRR(CMPLTS, 0, X1):
+    case OE_RRR(CMPLTS, 2, Y0):
+    case OE_RRR(CMPLTS, 2, Y1):
+    case OE_RRR(CMPLTU, 0, X0):
+    case OE_RRR(CMPLTU, 0, X1):
+    case OE_RRR(CMPLTU, 2, Y0):
+    case OE_RRR(CMPLTU, 2, Y1):
+    case OE_RRR(CMPNE, 0, X0):
+    case OE_RRR(CMPNE, 0, X1):
+    case OE_RRR(CMPNE, 3, Y0):
+    case OE_RRR(CMPNE, 3, Y1):
+    case OE_RRR(CMULAF, 0, X0):
+    case OE_RRR(CMULA, 0, X0):
+    case OE_RRR(CMULFR, 0, X0):
+    case OE_RRR(CMULF, 0, X0):
+    case OE_RRR(CMULHR, 0, X0):
+    case OE_RRR(CMULH, 0, X0):
+    case OE_RRR(CMUL, 0, X0):
+    case OE_RRR(CRC32_32, 0, X0):
+    case OE_RRR(CRC32_8, 0, X0):
+    case OE_RRR(DBLALIGN2, 0, X0):
+    case OE_RRR(DBLALIGN2, 0, X1):
+    case OE_RRR(DBLALIGN4, 0, X0):
+    case OE_RRR(DBLALIGN4, 0, X1):
+    case OE_RRR(DBLALIGN6, 0, X0):
+    case OE_RRR(DBLALIGN6, 0, X1):
+    case OE_RRR(DBLALIGN, 0, X0):
+    case OE_RRR(EXCH4, 0, X1):
+    case OE_RRR(EXCH, 0, X1):
+    case OE_RRR(FDOUBLE_ADDSUB, 0, X0):
+    case OE_RRR(FDOUBLE_ADD_FLAGS, 0, X0):
+    case OE_RRR(FDOUBLE_MUL_FLAGS, 0, X0):
+    case OE_RRR(FDOUBLE_PACK1, 0, X0):
+    case OE_RRR(FDOUBLE_PACK2, 0, X0):
+    case OE_RRR(FDOUBLE_SUB_FLAGS, 0, X0):
+    case OE_RRR(FDOUBLE_UNPACK_MAX, 0, X0):
+    case OE_RRR(FDOUBLE_UNPACK_MIN, 0, X0):
+    case OE_RRR(FETCHADD4, 0, X1):
+    case OE_RRR(FETCHADDGEZ4, 0, X1):
+    case OE_RRR(FETCHADDGEZ, 0, X1):
+    case OE_RRR(FETCHADD, 0, X1):
+    case OE_RRR(FETCHAND4, 0, X1):
+    case OE_RRR(FETCHAND, 0, X1):
+    case OE_RRR(FETCHOR4, 0, X1):
+    case OE_RRR(FETCHOR, 0, X1):
+    case OE_RRR(FSINGLE_ADD1, 0, X0):
+    case OE_RRR(FSINGLE_ADDSUB2, 0, X0):
+    case OE_RRR(FSINGLE_MUL1, 0, X0):
+    case OE_RRR(FSINGLE_MUL2, 0, X0):
+    case OE_RRR(FSINGLE_PACK2, 0, X0):
+    case OE_RRR(FSINGLE_SUB1, 0, X0):
+    case OE_RRR(MNZ, 0, X0):
+    case OE_RRR(MNZ, 0, X1):
+    case OE_RRR(MNZ, 4, Y0):
+    case OE_RRR(MNZ, 4, Y1):
+    case OE_RRR(MULAX, 0, X0):
+    case OE_RRR(MULAX, 3, Y0):
+    case OE_RRR(MULA_HS_HS, 0, X0):
+    case OE_RRR(MULA_HS_HS, 9, Y0):
+    case OE_RRR(MULA_HS_HU, 0, X0):
+    case OE_RRR(MULA_HS_LS, 0, X0):
+    case OE_RRR(MULA_HS_LU, 0, X0):
+    case OE_RRR(MULA_HU_HU, 0, X0):
+    case OE_RRR(MULA_HU_HU, 9, Y0):
+    case OE_RRR(MULA_HU_LS, 0, X0):
+    case OE_RRR(MULA_HU_LU, 0, X0):
+    case OE_RRR(MULA_LS_LS, 0, X0):
+    case OE_RRR(MULA_LS_LS, 9, Y0):
+    case OE_RRR(MULA_LS_LU, 0, X0):
+    case OE_RRR(MULA_LU_LU, 0, X0):
+    case OE_RRR(MULA_LU_LU, 9, Y0):
+    case OE_RRR(MULX, 0, X0):
+    case OE_RRR(MULX, 3, Y0):
+    case OE_RRR(MUL_HS_HS, 0, X0):
+    case OE_RRR(MUL_HS_HS, 8, Y0):
+    case OE_RRR(MUL_HS_HU, 0, X0):
+    case OE_RRR(MUL_HS_LS, 0, X0):
+    case OE_RRR(MUL_HS_LU, 0, X0):
+    case OE_RRR(MUL_HU_HU, 0, X0):
+    case OE_RRR(MUL_HU_HU, 8, Y0):
+    case OE_RRR(MUL_HU_LS, 0, X0):
+    case OE_RRR(MUL_HU_LU, 0, X0):
+    case OE_RRR(MUL_LS_LS, 0, X0):
+    case OE_RRR(MUL_LS_LS, 8, Y0):
+    case OE_RRR(MUL_LS_LU, 0, X0):
+    case OE_RRR(MUL_LU_LU, 0, X0):
+    case OE_RRR(MUL_LU_LU, 8, Y0):
+    case OE_RRR(MZ, 0, X0):
+    case OE_RRR(MZ, 0, X1):
+    case OE_RRR(MZ, 4, Y0):
+    case OE_RRR(MZ, 4, Y1):
+    case OE_RRR(NOR, 0, X0):
+    case OE_RRR(NOR, 0, X1):
+    case OE_RRR(NOR, 5, Y0):
+    case OE_RRR(NOR, 5, Y1):
+    case OE_RRR(OR, 0, X0):
+    case OE_RRR(OR, 0, X1):
+    case OE_RRR(OR, 5, Y0):
+    case OE_RRR(OR, 5, Y1):
+    case OE_RRR(ROTL, 0, X0):
+    case OE_RRR(ROTL, 0, X1):
+    case OE_RRR(ROTL, 6, Y0):
+    case OE_RRR(ROTL, 6, Y1):
+    case OE_RRR(SHL1ADDX, 0, X0):
+    case OE_RRR(SHL1ADDX, 0, X1):
+    case OE_RRR(SHL1ADDX, 7, Y0):
+    case OE_RRR(SHL1ADDX, 7, Y1):
+    case OE_RRR(SHL1ADD, 0, X0):
+    case OE_RRR(SHL1ADD, 0, X1):
+    case OE_RRR(SHL1ADD, 1, Y0):
+    case OE_RRR(SHL1ADD, 1, Y1):
+    case OE_RRR(SHL2ADDX, 0, X0):
+    case OE_RRR(SHL2ADDX, 0, X1):
+    case OE_RRR(SHL2ADDX, 7, Y0):
+    case OE_RRR(SHL2ADDX, 7, Y1):
+    case OE_RRR(SHL2ADD, 0, X0):
+    case OE_RRR(SHL2ADD, 0, X1):
+    case OE_RRR(SHL2ADD, 1, Y0):
+    case OE_RRR(SHL2ADD, 1, Y1):
+    case OE_RRR(SHL3ADDX, 0, X0):
+    case OE_RRR(SHL3ADDX, 0, X1):
+    case OE_RRR(SHL3ADDX, 7, Y0):
+    case OE_RRR(SHL3ADDX, 7, Y1):
+    case OE_RRR(SHL3ADD, 0, X0):
+    case OE_RRR(SHL3ADD, 0, X1):
+    case OE_RRR(SHL3ADD, 1, Y0):
+    case OE_RRR(SHL3ADD, 1, Y1):
+    case OE_RRR(SHLX, 0, X0):
+    case OE_RRR(SHLX, 0, X1):
+    case OE_RRR(SHL, 0, X0):
+    case OE_RRR(SHL, 0, X1):
+    case OE_RRR(SHL, 6, Y0):
+    case OE_RRR(SHL, 6, Y1):
+    case OE_RRR(SHRS, 0, X0):
+    case OE_RRR(SHRS, 0, X1):
+    case OE_RRR(SHRS, 6, Y0):
+    case OE_RRR(SHRS, 6, Y1):
+    case OE_RRR(SHRUX, 0, X0):
+    case OE_RRR(SHRUX, 0, X1):
+    case OE_RRR(SHRU, 0, X0):
+    case OE_RRR(SHRU, 0, X1):
+    case OE_RRR(SHRU, 6, Y0):
+    case OE_RRR(SHRU, 6, Y1):
+    case OE_RRR(SHUFFLEBYTES, 0, X0):
+    case OE_RRR(ST1, 0, X1):
+    case OE_RRR(ST2, 0, X1):
+    case OE_RRR(ST4, 0, X1):
+    case OE_RRR(STNT1, 0, X1):
+    case OE_RRR(STNT2, 0, X1):
+    case OE_RRR(STNT4, 0, X1):
+    case OE_RRR(STNT, 0, X1):
+    case OE_RRR(ST, 0, X1):
+    case OE_RRR(SUBXSC, 0, X0):
+    case OE_RRR(SUBXSC, 0, X1):
+    case OE_RRR(SUBX, 0, X0):
+    case OE_RRR(SUBX, 0, X1):
+    case OE_RRR(SUBX, 0, Y0):
+    case OE_RRR(SUBX, 0, Y1):
+    case OE_RRR(SUB, 0, X0):
+    case OE_RRR(SUB, 0, X1):
+    case OE_RRR(SUB, 0, Y0):
+    case OE_RRR(SUB, 0, Y1):
+    case OE_RRR(V1ADDUC, 0, X0):
+    case OE_RRR(V1ADDUC, 0, X1):
+    case OE_RRR(V1ADD, 0, X0):
+    case OE_RRR(V1ADD, 0, X1):
+    case OE_RRR(V1ADIFFU, 0, X0):
+    case OE_RRR(V1AVGU, 0, X0):
+    case OE_RRR(V1CMPEQ, 0, X0):
+    case OE_RRR(V1CMPEQ, 0, X1):
+    case OE_RRR(V1CMPLES, 0, X0):
+    case OE_RRR(V1CMPLES, 0, X1):
+    case OE_RRR(V1CMPLEU, 0, X0):
+    case OE_RRR(V1CMPLEU, 0, X1):
+    case OE_RRR(V1CMPLTS, 0, X0):
+    case OE_RRR(V1CMPLTS, 0, X1):
+    case OE_RRR(V1CMPLTU, 0, X0):
+    case OE_RRR(V1CMPLTU, 0, X1):
+    case OE_RRR(V1CMPNE, 0, X0):
+    case OE_RRR(V1CMPNE, 0, X1):
+    case OE_RRR(V1DDOTPUA, 0, X0):
+    case OE_RRR(V1DDOTPUSA, 0, X0):
+    case OE_RRR(V1DDOTPUS, 0, X0):
+    case OE_RRR(V1DDOTPU, 0, X0):
+    case OE_RRR(V1DOTPA, 0, X0):
+    case OE_RRR(V1DOTPUA, 0, X0):
+    case OE_RRR(V1DOTPUSA, 0, X0):
+    case OE_RRR(V1DOTPUS, 0, X0):
+    case OE_RRR(V1DOTPU, 0, X0):
+    case OE_RRR(V1DOTP, 0, X0):
+    case OE_RRR(V1INT_H, 0, X0):
+    case OE_RRR(V1INT_H, 0, X1):
+    case OE_RRR(V1INT_L, 0, X0):
+    case OE_RRR(V1INT_L, 0, X1):
+    case OE_RRR(V1MAXU, 0, X0):
+    case OE_RRR(V1MAXU, 0, X1):
+    case OE_RRR(V1MINU, 0, X0):
+    case OE_RRR(V1MINU, 0, X1):
+    case OE_RRR(V1MNZ, 0, X0):
+    case OE_RRR(V1MNZ, 0, X1):
+    case OE_RRR(V1MULTU, 0, X0):
+    case OE_RRR(V1MULUS, 0, X0):
+    case OE_RRR(V1MULU, 0, X0):
+    case OE_RRR(V1MZ, 0, X0):
+    case OE_RRR(V1MZ, 0, X1):
+    case OE_RRR(V1SADAU, 0, X0):
+    case OE_RRR(V1SADU, 0, X0):
+    case OE_RRR(V1SHL, 0, X0):
+    case OE_RRR(V1SHL, 0, X1):
+    case OE_RRR(V1SHRS, 0, X0):
+    case OE_RRR(V1SHRS, 0, X1):
+    case OE_RRR(V1SHRU, 0, X0):
+    case OE_RRR(V1SHRU, 0, X1):
+    case OE_RRR(V1SUBUC, 0, X0):
+    case OE_RRR(V1SUBUC, 0, X1):
+    case OE_RRR(V1SUB, 0, X0):
+    case OE_RRR(V1SUB, 0, X1):
+    case OE_RRR(V2ADDSC, 0, X0):
+    case OE_RRR(V2ADDSC, 0, X1):
+    case OE_RRR(V2ADD, 0, X0):
+    case OE_RRR(V2ADD, 0, X1):
+    case OE_RRR(V2ADIFFS, 0, X0):
+    case OE_RRR(V2AVGS, 0, X0):
+    case OE_RRR(V2CMPEQ, 0, X0):
+    case OE_RRR(V2CMPEQ, 0, X1):
+    case OE_RRR(V2CMPLES, 0, X0):
+    case OE_RRR(V2CMPLES, 0, X1):
+    case OE_RRR(V2CMPLEU, 0, X0):
+    case OE_RRR(V2CMPLEU, 0, X1):
+    case OE_RRR(V2CMPLTS, 0, X0):
+    case OE_RRR(V2CMPLTS, 0, X1):
+    case OE_RRR(V2CMPLTU, 0, X0):
+    case OE_RRR(V2CMPLTU, 0, X1):
+    case OE_RRR(V2CMPNE, 0, X0):
+    case OE_RRR(V2CMPNE, 0, X1):
+    case OE_RRR(V2DOTPA, 0, X0):
+    case OE_RRR(V2DOTP, 0, X0):
+    case OE_RRR(V2INT_H, 0, X0):
+    case OE_RRR(V2INT_H, 0, X1):
+    case OE_RRR(V2INT_L, 0, X0):
+    case OE_RRR(V2INT_L, 0, X1):
+    case OE_RRR(V2MAXS, 0, X0):
+    case OE_RRR(V2MAXS, 0, X1):
+    case OE_RRR(V2MINS, 0, X0):
+    case OE_RRR(V2MINS, 0, X1):
+    case OE_RRR(V2MNZ, 0, X0):
+    case OE_RRR(V2MNZ, 0, X1):
+    case OE_RRR(V2MULFSC, 0, X0):
+    case OE_RRR(V2MULS, 0, X0):
+    case OE_RRR(V2MULTS, 0, X0):
+    case OE_RRR(V2MZ, 0, X0):
+    case OE_RRR(V2MZ, 0, X1):
+    case OE_RRR(V2PACKH, 0, X0):
+    case OE_RRR(V2PACKH, 0, X1):
+    case OE_RRR(V2PACKL, 0, X0):
+    case OE_RRR(V2PACKL, 0, X1):
+    case OE_RRR(V2PACKUC, 0, X0):
+    case OE_RRR(V2PACKUC, 0, X1):
+    case OE_RRR(V2SADAS, 0, X0):
+    case OE_RRR(V2SADAU, 0, X0):
+    case OE_RRR(V2SADS, 0, X0):
+    case OE_RRR(V2SADU, 0, X0):
+    case OE_RRR(V2SHLSC, 0, X0):
+    case OE_RRR(V2SHLSC, 0, X1):
+    case OE_RRR(V2SHL, 0, X0):
+    case OE_RRR(V2SHL, 0, X1):
+    case OE_RRR(V2SHRS, 0, X0):
+    case OE_RRR(V2SHRS, 0, X1):
+    case OE_RRR(V2SHRU, 0, X0):
+    case OE_RRR(V2SHRU, 0, X1):
+    case OE_RRR(V2SUBSC, 0, X0):
+    case OE_RRR(V2SUBSC, 0, X1):
+    case OE_RRR(V2SUB, 0, X0):
+    case OE_RRR(V2SUB, 0, X1):
+    case OE_RRR(V4ADDSC, 0, X0):
+    case OE_RRR(V4ADDSC, 0, X1):
+    case OE_RRR(V4ADD, 0, X0):
+    case OE_RRR(V4ADD, 0, X1):
+    case OE_RRR(V4INT_H, 0, X0):
+    case OE_RRR(V4INT_H, 0, X1):
+    case OE_RRR(V4INT_L, 0, X0):
+    case OE_RRR(V4INT_L, 0, X1):
+    case OE_RRR(V4PACKSC, 0, X0):
+    case OE_RRR(V4PACKSC, 0, X1):
+    case OE_RRR(V4SHLSC, 0, X0):
+    case OE_RRR(V4SHLSC, 0, X1):
+    case OE_RRR(V4SHL, 0, X0):
+    case OE_RRR(V4SHL, 0, X1):
+    case OE_RRR(V4SHRS, 0, X0):
+    case OE_RRR(V4SHRS, 0, X1):
+    case OE_RRR(V4SHRU, 0, X0):
+    case OE_RRR(V4SHRU, 0, X1):
+    case OE_RRR(V4SUBSC, 0, X0):
+    case OE_RRR(V4SUBSC, 0, X1):
+    case OE_RRR(V4SUB, 0, X0):
+    case OE_RRR(V4SUB, 0, X1):
+    case OE_RRR(XOR, 0, X0):
+    case OE_RRR(XOR, 0, X1):
+    case OE_RRR(XOR, 5, Y0):
+    case OE_RRR(XOR, 5, Y1):
+    default:
+        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+    }
+
+    qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s %s, %s, %s", mnemonic,
+                  reg_names[dest], reg_names[srca], reg_names[srcb]);
+    return TILEGX_EXCP_NONE;
+}
+
+static TileExcp gen_rri_opcode(DisasContext *dc, unsigned opext,
+                               unsigned dest, unsigned srca, int imm)
+{
+    const char *mnemonic;
+
+    switch (opext) {
+    case OE_IM(ADDI, X0):
+    case OE_IM(ADDI, X1):
+    case OE_IM(ADDXI, X0):
+    case OE_IM(ADDXI, X1):
+    case OE_IM(ANDI, X0):
+    case OE_IM(ANDI, X1):
+    case OE_IM(CMPEQI, X0):
+    case OE_IM(CMPEQI, X1):
+    case OE_IM(CMPLTSI, X0):
+    case OE_IM(CMPLTSI, X1):
+    case OE_IM(CMPLTUI, X0):
+    case OE_IM(CMPLTUI, X1):
+    case OE_IM(LD1S_ADD, X1):
+    case OE_IM(LD1U_ADD, X1):
+    case OE_IM(LD2S_ADD, X1):
+    case OE_IM(LD2U_ADD, X1):
+    case OE_IM(LD4S_ADD, X1):
+    case OE_IM(LD4U_ADD, X1):
+    case OE_IM(LDNT1S_ADD, X1):
+    case OE_IM(LDNT1U_ADD, X1):
+    case OE_IM(LDNT2S_ADD, X1):
+    case OE_IM(LDNT2U_ADD, X1):
+    case OE_IM(LDNT4S_ADD, X1):
+    case OE_IM(LDNT4U_ADD, X1):
+    case OE_IM(LDNT_ADD, X1):
+    case OE_IM(LD_ADD, X1):
+    case OE_IM(LDNA_ADD, X1):
+    case OE_IM(MFSPR, X1):
+    case OE_IM(MTSPR, X1):
+    case OE_IM(ORI, X0):
+    case OE_IM(ORI, X1):
+    case OE_IM(ST1_ADD, X1):
+    case OE_IM(ST2_ADD, X1):
+    case OE_IM(ST4_ADD, X1):
+    case OE_IM(STNT1_ADD, X1):
+    case OE_IM(STNT2_ADD, X1):
+    case OE_IM(STNT4_ADD, X1):
+    case OE_IM(STNT_ADD, X1):
+    case OE_IM(ST_ADD, X1):
+    case OE_IM(V1ADDI, X0):
+    case OE_IM(V1ADDI, X1):
+    case OE_IM(V1CMPEQI, X0):
+    case OE_IM(V1CMPEQI, X1):
+    case OE_IM(V1CMPLTSI, X0):
+    case OE_IM(V1CMPLTSI, X1):
+    case OE_IM(V1CMPLTUI, X0):
+    case OE_IM(V1CMPLTUI, X1):
+    case OE_IM(V1MAXUI, X0):
+    case OE_IM(V1MAXUI, X1):
+    case OE_IM(V1MINUI, X0):
+    case OE_IM(V1MINUI, X1):
+    case OE_IM(V2ADDI, X0):
+    case OE_IM(V2ADDI, X1):
+    case OE_IM(V2CMPEQI, X0):
+    case OE_IM(V2CMPEQI, X1):
+    case OE_IM(V2CMPLTSI, X0):
+    case OE_IM(V2CMPLTSI, X1):
+    case OE_IM(V2CMPLTUI, X0):
+    case OE_IM(V2CMPLTUI, X1):
+    case OE_IM(V2MAXSI, X0):
+    case OE_IM(V2MAXSI, X1):
+    case OE_IM(V2MINSI, X0):
+    case OE_IM(V2MINSI, X1):
+    case OE_IM(XORI, X0):
+    case OE_IM(XORI, X1):
+
+    case OE_SH(ROTLI, X0):
+    case OE_SH(ROTLI, X1):
+    case OE_SH(ROTLI, Y0):
+    case OE_SH(ROTLI, Y1):
+    case OE_SH(SHLI, X0):
+    case OE_SH(SHLI, X1):
+    case OE_SH(SHLI, Y0):
+    case OE_SH(SHLI, Y1):
+    case OE_SH(SHLXI, X0):
+    case OE_SH(SHLXI, X1):
+    case OE_SH(SHRSI, X0):
+    case OE_SH(SHRSI, X1):
+    case OE_SH(SHRSI, Y0):
+    case OE_SH(SHRSI, Y1):
+    case OE_SH(SHRUI, X0):
+    case OE_SH(SHRUI, X1):
+    case OE_SH(SHRUI, Y0):
+    case OE_SH(SHRUI, Y1):
+    case OE_SH(SHRUXI, X0):
+    case OE_SH(SHRUXI, X1):
+    case OE_SH(V1SHLI, X0):
+    case OE_SH(V1SHLI, X1):
+    case OE_SH(V1SHRSI, X0):
+    case OE_SH(V1SHRSI, X1):
+    case OE_SH(V1SHRUI, X0):
+    case OE_SH(V1SHRUI, X1):
+    case OE_SH(V2SHLI, X0):
+    case OE_SH(V2SHLI, X1):
+    case OE_SH(V2SHRSI, X0):
+    case OE_SH(V2SHRSI, X1):
+    case OE_SH(V2SHRUI, X0):
+    case OE_SH(V2SHRUI, X1):
+
+    case OE(ADDI_OPCODE_Y0, 0, Y0):
+    case OE(ADDI_OPCODE_Y1, 0, Y1):
+    case OE(ADDLI_OPCODE_X0, 0, X0):
+    case OE(ADDLI_OPCODE_X1, 0, X1):
+    case OE(ADDXI_OPCODE_Y0, 0, Y0):
+    case OE(ADDXI_OPCODE_Y1, 0, Y1):
+    case OE(ADDXLI_OPCODE_X0, 0, X0):
+    case OE(ADDXLI_OPCODE_X1, 0, X1):
+    case OE(ANDI_OPCODE_Y0, 0, Y0):
+    case OE(ANDI_OPCODE_Y1, 0, Y1):
+    case OE(CMPEQI_OPCODE_Y0, 0, Y0):
+    case OE(CMPEQI_OPCODE_Y1, 0, Y1):
+    case OE(CMPLTSI_OPCODE_Y0, 0, Y0):
+    case OE(CMPLTSI_OPCODE_Y1, 0, Y1):
+    case OE(SHL16INSLI_OPCODE_X0, 0, X0):
+    case OE(SHL16INSLI_OPCODE_X1, 0, X1):
+
+    default:
+        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+    }
+
+    qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s %s, %s, %d", mnemonic,
+                  reg_names[dest], reg_names[srca], imm);
+    return TILEGX_EXCP_NONE;
+}
+
+static TileExcp gen_bf_opcode_x0(DisasContext *dc, unsigned ext,
+                                 unsigned dest, unsigned srca,
+                                 unsigned bfs, unsigned bfe)
+{
+    const char *mnemonic;
+
+    switch (ext) {
+    case BFEXTU_BF_OPCODE_X0:
+    case BFEXTS_BF_OPCODE_X0:
+    case BFINS_BF_OPCODE_X0:
+    case MM_BF_OPCODE_X0:
+    default:
+        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+    }
+
+    qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s %s, %s, %u, %u", mnemonic,
+                  reg_names[dest], reg_names[srca], bfs, bfe);
+    return TILEGX_EXCP_NONE;
+}
+
+static TileExcp gen_branch_opcode_x1(DisasContext *dc, unsigned ext,
+                                     unsigned srca, int off)
+{
+    target_ulong tgt = dc->pc + off * TILEGX_BUNDLE_SIZE_IN_BYTES;
+    const char *mnemonic;
+
+    switch (ext) {
+    case BEQZT_BRANCH_OPCODE_X1:
+    case BEQZ_BRANCH_OPCODE_X1:
+    case BNEZT_BRANCH_OPCODE_X1:
+    case BNEZ_BRANCH_OPCODE_X1:
+    case BLBC_BRANCH_OPCODE_X1:
+    case BGEZT_BRANCH_OPCODE_X1:
+    case BGEZ_BRANCH_OPCODE_X1:
+    case BGTZT_BRANCH_OPCODE_X1:
+    case BGTZ_BRANCH_OPCODE_X1:
+    case BLBCT_BRANCH_OPCODE_X1:
+    case BLBST_BRANCH_OPCODE_X1:
+    case BLBS_BRANCH_OPCODE_X1:
+    case BLEZT_BRANCH_OPCODE_X1:
+    case BLEZ_BRANCH_OPCODE_X1:
+    case BLTZT_BRANCH_OPCODE_X1:
+    case BLTZ_BRANCH_OPCODE_X1:
+    default:
+        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+    }
+
+    if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
+        qemu_log("%s %s, " TARGET_FMT_lx " <%s>",
+                 mnemonic, reg_names[srca], tgt, lookup_symbol(tgt));
+    }
+    return TILEGX_EXCP_NONE;
+}
+
+static TileExcp gen_jump_opcode_x1(DisasContext *dc, unsigned ext,
+                                   int off)
+{
+    target_ulong tgt = dc->pc + off * TILEGX_BUNDLE_SIZE_IN_BYTES;
+    const char *mnemonic;
+
+    switch (ext) {
+    case JAL_JUMP_OPCODE_X1:
+    case J_JUMP_OPCODE_X1:
+    default:
+        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+    }
+
+    if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
+        qemu_log("%s " TARGET_FMT_lx " <%s>",
+                 mnemonic, tgt, lookup_symbol(tgt));
+    }
+    return TILEGX_EXCP_NONE;
+}
+
+static TileExcp decode_y0(DisasContext *dc, tilegx_bundle_bits bundle)
+{
+    unsigned opc = get_Opcode_Y0(bundle);
+    unsigned ext = get_RRROpcodeExtension_Y0(bundle);
+    unsigned dest = get_Dest_Y0(bundle);
+    unsigned srca = get_SrcA_Y0(bundle);
+    unsigned srcb;
+    int imm;
+
+    switch (opc) {
+    case RRR_1_OPCODE_Y0:
+        if (ext == UNARY_RRR_1_OPCODE_Y0) {
+            ext = get_UnaryOpcodeExtension_Y0(bundle);
+            return gen_rr_opcode(dc, OE(opc, ext, Y0), dest, srca);
+        }
+        /* fallthru */
+    case RRR_0_OPCODE_Y0:
+    case RRR_2_OPCODE_Y0:
+    case RRR_3_OPCODE_Y0:
+    case RRR_4_OPCODE_Y0:
+    case RRR_5_OPCODE_Y0:
+    case RRR_6_OPCODE_Y0:
+    case RRR_7_OPCODE_Y0:
+    case RRR_8_OPCODE_Y0:
+    case RRR_9_OPCODE_Y0:
+        srcb = get_SrcB_Y0(bundle);
+        return gen_rrr_opcode(dc, OE(opc, ext, Y0), dest, srca, srcb);
+
+    case SHIFT_OPCODE_Y0:
+        ext = get_ShiftOpcodeExtension_Y0(bundle);
+        imm = get_ShAmt_Y0(bundle);
+        return gen_rri_opcode(dc, OE(opc, ext, Y0), dest, srca, imm);
+
+    case ADDI_OPCODE_Y0:
+    case ADDXI_OPCODE_Y0:
+    case ANDI_OPCODE_Y0:
+    case CMPEQI_OPCODE_Y0:
+    case CMPLTSI_OPCODE_Y0:
+        imm = (int8_t)get_Imm8_Y0(bundle);
+        return gen_rri_opcode(dc, OE(opc, 0, Y0), dest, srca, imm);
+
+    default:
+        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+    }
+}
+
+static TileExcp decode_y1(DisasContext *dc, tilegx_bundle_bits bundle)
+{
+    unsigned opc = get_Opcode_Y1(bundle);
+    unsigned ext = get_RRROpcodeExtension_Y1(bundle);
+    unsigned dest = get_Dest_Y1(bundle);
+    unsigned srca = get_SrcA_Y1(bundle);
+    unsigned srcb;
+    int imm;
+
+    switch (get_Opcode_Y1(bundle)) {
+    case RRR_1_OPCODE_Y1:
+        if (ext == UNARY_RRR_1_OPCODE_Y0) {
+            ext = get_UnaryOpcodeExtension_Y1(bundle);
+            return gen_rr_opcode(dc, OE(opc, ext, Y1), dest, srca);
+        }
+        /* fallthru */
+    case RRR_0_OPCODE_Y1:
+    case RRR_2_OPCODE_Y1:
+    case RRR_3_OPCODE_Y1:
+    case RRR_4_OPCODE_Y1:
+    case RRR_5_OPCODE_Y1:
+    case RRR_6_OPCODE_Y1:
+    case RRR_7_OPCODE_Y1:
+        srcb = get_SrcB_Y1(bundle);
+        return gen_rrr_opcode(dc, OE(opc, ext, Y1), dest, srca, srcb);
+
+    case SHIFT_OPCODE_Y1:
+        ext = get_ShiftOpcodeExtension_Y1(bundle);
+        imm = get_ShAmt_Y1(bundle);
+        return gen_rri_opcode(dc, OE(opc, ext, Y1), dest, srca, imm);
+
+    case ADDI_OPCODE_Y1:
+    case ADDXI_OPCODE_Y1:
+    case ANDI_OPCODE_Y1:
+    case CMPEQI_OPCODE_Y1:
+    case CMPLTSI_OPCODE_Y1:
+        imm = (int8_t)get_Imm8_Y1(bundle);
+        return gen_rri_opcode(dc, OE(opc, 0, Y1), dest, srca, imm);
+
+    default:
+        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+    }
+}
+
+static TileExcp decode_y2(DisasContext *dc, tilegx_bundle_bits bundle)
+{
+    unsigned mode = get_Mode(bundle);
+    unsigned opc = get_Opcode_Y2(bundle);
+    unsigned srca = get_SrcA_Y2(bundle);
+    unsigned srcbdest = get_SrcBDest_Y2(bundle);
+    const char *mnemonic;
+
+    switch (OEY2(opc, mode)) {
+    case OEY2(LD1S_OPCODE_Y2, MODE_OPCODE_YA2):
+    case OEY2(LD1U_OPCODE_Y2, MODE_OPCODE_YA2):
+    case OEY2(LD2S_OPCODE_Y2, MODE_OPCODE_YA2):
+    case OEY2(LD2U_OPCODE_Y2, MODE_OPCODE_YA2):
+    case OEY2(LD4S_OPCODE_Y2, MODE_OPCODE_YB2):
+    case OEY2(LD4U_OPCODE_Y2, MODE_OPCODE_YB2):
+    case OEY2(LD_OPCODE_Y2, MODE_OPCODE_YB2):
+
+    case OEY2(ST1_OPCODE_Y2, MODE_OPCODE_YC2):
+    case OEY2(ST2_OPCODE_Y2, MODE_OPCODE_YC2):
+    case OEY2(ST4_OPCODE_Y2, MODE_OPCODE_YC2):
+    case OEY2(ST_OPCODE_Y2, MODE_OPCODE_YC2):
+
+    default:
+        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+    }
+    qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s %s, %s", mnemonic,
+                  reg_names[srca], reg_names[srcbdest]);
+    return TILEGX_EXCP_NONE;
+}
+
+static TileExcp decode_x0(DisasContext *dc, tilegx_bundle_bits bundle)
+{
+    unsigned opc = get_Opcode_X0(bundle);
+    unsigned dest = get_Dest_X0(bundle);
+    unsigned srca = get_SrcA_X0(bundle);
+    unsigned ext, srcb, bfs, bfe;
+    int imm;
+
+    switch (opc) {
+    case RRR_0_OPCODE_X0:
+        ext = get_RRROpcodeExtension_X0(bundle);
+        if (ext == UNARY_RRR_0_OPCODE_X0) {
+            ext = get_UnaryOpcodeExtension_X0(bundle);
+            return gen_rr_opcode(dc, OE(opc, ext, X0), dest, srca);
+        }
+        srcb = get_SrcB_X0(bundle);
+        return gen_rrr_opcode(dc, OE(opc, ext, X0), dest, srca, srcb);
+
+    case SHIFT_OPCODE_X0:
+        ext = get_ShiftOpcodeExtension_X0(bundle);
+        imm = get_ShAmt_X0(bundle);
+        return gen_rri_opcode(dc, OE(opc, ext, X0), dest, srca, imm);
+
+    case IMM8_OPCODE_X0:
+        ext = get_Imm8OpcodeExtension_X0(bundle);
+        imm = (int8_t)get_Imm8_X0(bundle);
+        return gen_rri_opcode(dc, OE(opc, ext, X0), dest, srca, imm);
+
+    case BF_OPCODE_X0:
+        ext = get_BFOpcodeExtension_X0(bundle);
+        bfs = get_BFStart_X0(bundle);
+        bfe = get_BFEnd_X0(bundle);
+        return gen_bf_opcode_x0(dc, ext, dest, srca, bfs, bfe);
+
+    case ADDLI_OPCODE_X0:
+    case SHL16INSLI_OPCODE_X0:
+    case ADDXLI_OPCODE_X0:
+        imm = (int16_t)get_Imm16_X0(bundle);
+        return gen_rri_opcode(dc, OE(opc, 0, X0), dest, srca, imm);
+
+    default:
+        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+    }
+}
+
+static TileExcp decode_x1(DisasContext *dc, tilegx_bundle_bits bundle)
+{
+    unsigned opc = get_Opcode_X1(bundle);
+    unsigned dest = get_Dest_X1(bundle);
+    unsigned srca = get_SrcA_X1(bundle);
+    unsigned ext, srcb;
+    int imm;
+
+    switch (opc) {
+    case RRR_0_OPCODE_X1:
+        ext = get_RRROpcodeExtension_X1(bundle);
+        if (ext == UNARY_RRR_0_OPCODE_X1) {
+            ext = get_UnaryOpcodeExtension_X1(bundle);
+            return gen_rr_opcode(dc, OE(opc, ext, X1), dest, srca);
+        }
+        srcb = get_SrcB_X1(bundle);
+        return gen_rrr_opcode(dc, OE(opc, ext, X1), dest, srca, srcb);
+
+    case SHIFT_OPCODE_X1:
+        ext = get_ShiftOpcodeExtension_X1(bundle);
+        imm = get_ShAmt_X1(bundle);
+        return gen_rri_opcode(dc, OE(opc, ext, X1), dest, srca, imm);
+
+    case IMM8_OPCODE_X1:
+        ext = get_Imm8OpcodeExtension_X1(bundle);
+        imm = (int8_t)get_Imm8_X1(bundle);
+        return gen_rri_opcode(dc, OE(opc, ext, X1), dest, srca, imm);
+
+    case BRANCH_OPCODE_X1:
+        ext = get_BrType_X1(bundle);
+        imm = sextract32(get_BrOff_X1(bundle), 0, 17);
+        return gen_branch_opcode_x1(dc, ext, srca, imm);
+
+    case JUMP_OPCODE_X1:
+        ext = get_JumpOpcodeExtension_X1(bundle);
+        imm = sextract32(get_JumpOff_X1(bundle), 0, 27);
+        return gen_jump_opcode_x1(dc, ext, imm);
+
+    case ADDLI_OPCODE_X1:
+    case SHL16INSLI_OPCODE_X1:
+    case ADDXLI_OPCODE_X1:
+        imm = (int16_t)get_Imm16_X1(bundle);
+        return gen_rri_opcode(dc, OE(opc, 0, X1), dest, srca, imm);
+
+    default:
+        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
+    }
+}
+
+static void notice_excp(DisasContext *dc, uint64_t bundle,
+                        const char *type, TileExcp excp)
+{
+    if (likely(excp == TILEGX_EXCP_NONE)) {
+        return;
+    }
+    gen_exception(dc, excp);
+    if (excp == TILEGX_EXCP_OPCODE_UNIMPLEMENTED) {
+        qemu_log_mask(LOG_UNIMP, "UNIMP %s, [" FMT64X "]\n", type, bundle);
+    }
+}
+
+static void translate_one_bundle(DisasContext *dc, uint64_t bundle)
+{
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(dc->wb); i++) {
+        DisasContextTemp *wb = &dc->wb[i];
+        wb->reg = TILEGX_R_NOREG;
+        TCGV_UNUSED_I64(wb->val);
+    }
+    dc->num_wb = 0;
+
+    if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
+        tcg_gen_debug_insn_start(dc->pc);
+    }
+
+    qemu_log_mask(CPU_LOG_TB_IN_ASM, "  %" PRIx64 ":  { ", dc->pc);
+    if (get_Mode(bundle)) {
+        notice_excp(dc, bundle, "y0", decode_y0(dc, bundle));
+        qemu_log_mask(CPU_LOG_TB_IN_ASM, " ; ");
+        notice_excp(dc, bundle, "y1", decode_y1(dc, bundle));
+        qemu_log_mask(CPU_LOG_TB_IN_ASM, " ; ");
+        notice_excp(dc, bundle, "y2", decode_y2(dc, bundle));
+    } else {
+        notice_excp(dc, bundle, "x0", decode_x0(dc, bundle));
+        qemu_log_mask(CPU_LOG_TB_IN_ASM, " ; ");
+        notice_excp(dc, bundle, "x1", decode_x1(dc, bundle));
+    }
+    qemu_log_mask(CPU_LOG_TB_IN_ASM, " }\n");
+
+    for (i = dc->num_wb - 1; i >= 0; --i) {
+        DisasContextTemp *wb = &dc->wb[i];
+        if (wb->reg < TILEGX_R_COUNT) {
+            tcg_gen_mov_i64(cpu_regs[wb->reg], wb->val);
+        }
+        tcg_temp_free_i64(wb->val);
+    }
+
+    if (dc->jmp.cond != TCG_COND_NEVER) {
+        if (dc->jmp.cond == TCG_COND_ALWAYS) {
+            tcg_gen_mov_i64(cpu_pc, dc->jmp.dest);
+        } else {
+            TCGv next = tcg_const_i64(dc->pc + TILEGX_BUNDLE_SIZE_IN_BYTES);
+            tcg_gen_movcond_i64(dc->jmp.cond, cpu_pc,
+                                dc->jmp.val1, load_zero(dc),
+                                dc->jmp.dest, next);
+            tcg_temp_free_i64(dc->jmp.val1);
+            tcg_temp_free_i64(next);
+        }
+        tcg_temp_free_i64(dc->jmp.dest);
+        tcg_gen_exit_tb(0);
+        dc->exit_tb = true;
+    }
+}
+
+static inline void gen_intermediate_code_internal(TileGXCPU *cpu,
+                                                  TranslationBlock *tb,
+                                                  bool search_pc)
+{
+    DisasContext ctx;
+    DisasContext *dc = &ctx;
+    CPUState *cs = CPU(cpu);
+    CPUTLGState *env = &cpu->env;
+    uint64_t pc_start = tb->pc;
+    uint64_t next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
+    int j, lj = -1;
+    int num_insns = 0;
+    int max_insns = tb->cflags & CF_COUNT_MASK;
+
+    dc->pc = pc_start;
+    dc->mmuidx = 0;
+    dc->exit_tb = false;
+    dc->jmp.cond = TCG_COND_NEVER;
+    TCGV_UNUSED_I64(dc->jmp.dest);
+    TCGV_UNUSED_I64(dc->jmp.val1);
+    TCGV_UNUSED_I64(dc->jmp.val2);
+    TCGV_UNUSED_I64(dc->zero);
+
+    if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
+        qemu_log("IN: %s\n", lookup_symbol(pc_start));
+    }
+    if (!max_insns) {
+        max_insns = CF_COUNT_MASK;
+    }
+    if (cs->singlestep_enabled || singlestep) {
+        max_insns = 1;
+    }
+    gen_tb_start(tb);
+
+    while (1) {
+        if (search_pc) {
+            j = tcg_op_buf_count();
+            if (lj < j) {
+                lj++;
+                while (lj < j) {
+                    tcg_ctx.gen_opc_instr_start[lj++] = 0;
+                }
+            }
+            tcg_ctx.gen_opc_pc[lj] = dc->pc;
+            tcg_ctx.gen_opc_instr_start[lj] = 1;
+            tcg_ctx.gen_opc_icount[lj] = num_insns;
+        }
+        translate_one_bundle(dc, cpu_ldq_data(env, dc->pc));
+
+        if (dc->exit_tb) {
+            /* PC updated and EXIT_TB/GOTO_TB/exception emitted.  */
+            break;
+        }
+        dc->pc += TILEGX_BUNDLE_SIZE_IN_BYTES;
+        if (++num_insns >= max_insns
+            || dc->pc >= next_page_start
+            || tcg_op_buf_full()) {
+            /* Ending the TB due to TB size or page boundary.  Set PC.  */
+            tcg_gen_movi_tl(cpu_pc, dc->pc);
+            tcg_gen_exit_tb(0);
+            break;
+        }
+    }
+
+    gen_tb_end(tb, num_insns);
+    if (search_pc) {
+        j = tcg_op_buf_count();
+        lj++;
+        while (lj <= j) {
+            tcg_ctx.gen_opc_instr_start[lj++] = 0;
+        }
+    } else {
+        tb->size = dc->pc - pc_start;
+        tb->icount = num_insns;
+    }
+
+    qemu_log_mask(CPU_LOG_TB_IN_ASM, "\n");
+}
+
+void gen_intermediate_code(CPUTLGState *env, struct TranslationBlock *tb)
+{
+    gen_intermediate_code_internal(tilegx_env_get_cpu(env), tb, false);
+}
+
+void gen_intermediate_code_pc(CPUTLGState *env, struct TranslationBlock *tb)
+{
+    gen_intermediate_code_internal(tilegx_env_get_cpu(env), tb, true);
+}
+
+void restore_state_to_opc(CPUTLGState *env, TranslationBlock *tb, int pc_pos)
+{
+    env->pc = tcg_ctx.gen_opc_pc[pc_pos];
+}
+
+void tilegx_tcg_init(void)
+{
+    int i;
+
+    cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
+    cpu_pc = tcg_global_mem_new_i64(TCG_AREG0, offsetof(CPUTLGState, pc), "pc");
+    for (i = 0; i < TILEGX_R_COUNT; i++) {
+        cpu_regs[i] = tcg_global_mem_new_i64(TCG_AREG0,
+                                             offsetof(CPUTLGState, regs[i]),
+                                             reg_names[i]);
+    }
+}