cris: Add support for CRISv10 translation.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>

1 files changed, 1243 insertions, 0 deletions

diff --git a/target-cris/translate_v10.c b/target-cris/translate_v10.c
new file mode 100644
index 0000000000..e6131bbfa0
--- /dev/null
+++ b/target-cris/translate_v10.c
@@ -0,0 +1,1243 @@
+/*
+ *  CRISv10 emulation for qemu: main translation routines.
+ *
+ *  Copyright (c) 2010 AXIS Communications AB
+ *  Written by Edgar E. Iglesias.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA  02110-1301 USA
+ */
+
+#include "crisv10-decode.h"
+
+static const char *regnames_v10[] =
+{
+	"$r0", "$r1", "$r2", "$r3",
+	"$r4", "$r5", "$r6", "$r7",
+	"$r8", "$r9", "$r10", "$r11",
+	"$r12", "$r13", "$sp", "$pc",
+};
+
+static const char *pregnames_v10[] =
+{
+	"$bz", "$vr", "$p2", "$p3",
+	"$wz", "$ccr", "$p6-prefix", "$mof",
+	"$dz", "$ibr", "$irp", "$srp",
+	"$bar", "$dccr", "$brp", "$usp",
+};
+
+/* We need this table to handle preg-moves with implicit width.  */
+static int preg_sizes_v10[] = {
+	1, /* bz.  */
+	1, /* vr.  */
+	1, /* pid. */
+	1, /* srs. */
+	2, /* wz.  */
+	2, 2, 4,
+	4, 4, 4, 4,
+	4, 4, 4, 4,
+};
+
+static inline int dec10_size(unsigned int size)
+{
+    size++;
+    if (size == 3)
+        size++;
+    return size;
+}
+
+static inline void cris_illegal_insn(DisasContext *dc)
+{
+    qemu_log("illegal insn at pc=%x\n", dc->pc);
+    t_gen_raise_exception(EXCP_BREAK);
+}
+
+/* Prefix flag and register are used to handle the more complex
+   addressing modes.  */
+static void cris_set_prefix(DisasContext *dc)
+{
+    dc->clear_prefix = 0;
+    dc->tb_flags |= PFIX_FLAG;
+    tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], PFIX_FLAG);
+
+    /* prefix insns dont clear the x flag.  */
+    dc->clear_x = 0;
+    cris_lock_irq(dc);
+}
+
+static void crisv10_prepare_memaddr(DisasContext *dc,
+                                    TCGv addr, unsigned int size)
+{
+    if (dc->tb_flags & PFIX_FLAG) {
+        tcg_gen_mov_tl(addr, cpu_PR[PR_PREFIX]);
+    } else {
+        tcg_gen_mov_tl(addr, cpu_R[dc->src]);
+    }
+}
+
+static unsigned int crisv10_post_memaddr(DisasContext *dc, unsigned int size)
+{
+    unsigned int insn_len = 0;
+
+    if (dc->tb_flags & PFIX_FLAG) {
+        if (dc->mode == CRISV10_MODE_AUTOINC) {
+            tcg_gen_mov_tl(cpu_R[dc->src], cpu_PR[PR_PREFIX]);
+        }
+    } else {
+        if (dc->mode == CRISV10_MODE_AUTOINC) {
+            if (dc->src == 15) {
+                insn_len += size & ~1;
+            } else {
+                tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], size);
+            }
+        }
+    }
+    return insn_len;
+}
+
+static int dec10_prep_move_m(DisasContext *dc, int s_ext, int memsize,
+                           TCGv dst)
+{
+        unsigned int rs, rd;
+        uint32_t imm;
+        int is_imm;
+        int insn_len = 0;
+
+        rs = dc->src;
+        rd = dc->dst;
+        is_imm = rs == 15 && !(dc->tb_flags & PFIX_FLAG);
+        LOG_DIS("rs=%d rd=%d is_imm=%d mode=%d pfix=%d\n",
+                  rs, rd, is_imm, dc->mode, dc->tb_flags & PFIX_FLAG);
+
+        /* Load [$rs] onto T1.  */
+        if (is_imm) {
+                if (memsize != 4) {
+                        if (s_ext) {
+                                if (memsize == 1)
+                                        imm = ldsb_code(dc->pc + 2);
+                                else
+                                        imm = ldsw_code(dc->pc + 2);
+                        } else {
+                                if (memsize == 1)
+                                        imm = ldub_code(dc->pc + 2);
+                                else
+                                        imm = lduw_code(dc->pc + 2);
+                        }
+                } else
+                        imm = ldl_code(dc->pc + 2);
+
+                tcg_gen_movi_tl(dst, imm);
+
+                if (dc->mode == CRISV10_MODE_AUTOINC) {
+                    insn_len += memsize;
+                    if (memsize == 1)
+                            insn_len++;
+                    tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len);
+                }
+        } else {
+                TCGv addr;
+
+                addr = tcg_temp_new();
+                cris_flush_cc_state(dc);
+                crisv10_prepare_memaddr(dc, addr, memsize);
+                gen_load(dc, dst, addr, memsize, 0);
+                if (s_ext)
+                        t_gen_sext(dst, dst, memsize);
+                else
+                        t_gen_zext(dst, dst, memsize);
+                insn_len += crisv10_post_memaddr(dc, memsize);
+                tcg_temp_free(addr);
+        }
+
+        if (dc->mode == CRISV10_MODE_INDIRECT && (dc->tb_flags & PFIX_FLAG)) {
+            dc->dst = dc->src;
+        }
+        return insn_len;
+}
+
+static unsigned int dec10_quick_imm(DisasContext *dc)
+{
+    int32_t imm, simm;
+    int op;
+
+    /* sign extend.  */
+    imm = dc->ir & ((1 << 6) - 1);
+    simm = (int8_t) (imm << 2);
+    simm >>= 2;
+    switch (dc->opcode) {
+        case CRISV10_QIMM_BDAP_R0:
+        case CRISV10_QIMM_BDAP_R1:
+        case CRISV10_QIMM_BDAP_R2:
+        case CRISV10_QIMM_BDAP_R3:
+            simm = (int8_t)dc->ir;
+            LOG_DIS("bdap %d $r%d\n", simm, dc->dst);
+            LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
+                     dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
+            cris_set_prefix(dc);
+            if (dc->dst == 15) {
+                tcg_gen_movi_tl(cpu_PR[PR_PREFIX], dc->pc + 2 + simm);
+            } else {
+                tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
+            }
+            break;
+
+        case CRISV10_QIMM_MOVEQ:
+            LOG_DIS("moveq %d, $r%d\n", simm, dc->dst);
+
+            cris_cc_mask(dc, CC_MASK_NZVC);
+            cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst],
+                     cpu_R[dc->dst], tcg_const_tl(simm), 4);
+            break;
+        case CRISV10_QIMM_CMPQ:
+            LOG_DIS("cmpq %d, $r%d\n", simm, dc->dst);
+
+            cris_cc_mask(dc, CC_MASK_NZVC);
+            cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
+                     cpu_R[dc->dst], tcg_const_tl(simm), 4);
+            break;
+        case CRISV10_QIMM_ADDQ:
+            LOG_DIS("addq %d, $r%d\n", imm, dc->dst);
+
+            cris_cc_mask(dc, CC_MASK_NZVC);
+            cris_alu(dc, CC_OP_ADD, cpu_R[dc->dst],
+                     cpu_R[dc->dst], tcg_const_tl(imm), 4);
+            break;
+        case CRISV10_QIMM_ANDQ:
+            LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
+
+            cris_cc_mask(dc, CC_MASK_NZVC);
+            cris_alu(dc, CC_OP_AND, cpu_R[dc->dst],
+                     cpu_R[dc->dst], tcg_const_tl(simm), 4);
+            break;
+        case CRISV10_QIMM_ASHQ:
+            LOG_DIS("ashq %d, $r%d\n", simm, dc->dst);
+
+            cris_cc_mask(dc, CC_MASK_NZVC);
+            op = imm & (1 << 5);
+            imm &= 0x1f;
+            if (op) {
+                cris_alu(dc, CC_OP_ASR, cpu_R[dc->dst],
+                          cpu_R[dc->dst], tcg_const_tl(imm), 4);
+            } else {
+                /* BTST */
+                cris_update_cc_op(dc, CC_OP_FLAGS, 4);
+                gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->dst],
+                           tcg_const_tl(imm), cpu_PR[PR_CCS]);
+            }
+            break;
+        case CRISV10_QIMM_LSHQ:
+            LOG_DIS("lshq %d, $r%d\n", simm, dc->dst);
+
+            op = CC_OP_LSL;
+            if (imm & (1 << 5)) {
+                op = CC_OP_LSR; 
+            }
+            imm &= 0x1f;
+            cris_cc_mask(dc, CC_MASK_NZVC);
+            cris_alu(dc, op, cpu_R[dc->dst],
+                     cpu_R[dc->dst], tcg_const_tl(imm), 4);
+            break;
+        case CRISV10_QIMM_SUBQ:
+            LOG_DIS("subq %d, $r%d\n", imm, dc->dst);
+
+            cris_cc_mask(dc, CC_MASK_NZVC);
+            cris_alu(dc, CC_OP_SUB, cpu_R[dc->dst],
+                     cpu_R[dc->dst], tcg_const_tl(imm), 4);
+            break;
+        case CRISV10_QIMM_ORQ:
+            LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
+
+            cris_cc_mask(dc, CC_MASK_NZVC);
+            cris_alu(dc, CC_OP_OR, cpu_R[dc->dst],
+                     cpu_R[dc->dst], tcg_const_tl(simm), 4);
+            break;
+
+        case CRISV10_QIMM_BCC_R0:
+            if (!dc->ir) {
+                cpu_abort(dc->env, "opcode zero\n");
+            }
+        case CRISV10_QIMM_BCC_R1:
+        case CRISV10_QIMM_BCC_R2:
+        case CRISV10_QIMM_BCC_R3:
+            imm = dc->ir & 0xff;
+            /* bit 0 is a sign bit.  */
+            if (imm & 1) {
+                imm |= 0xffffff00;   /* sign extend.  */
+                imm &= ~1;           /* get rid of the sign bit.  */
+            }
+            imm += 2;
+            LOG_DIS("b%s %d\n", cc_name(dc->cond), imm);
+
+            cris_cc_mask(dc, 0);
+            cris_prepare_cc_branch(dc, imm, dc->cond); 
+            break;
+
+        default:
+            LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
+                     dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
+            assert(0);
+            break;
+    }
+    return 2;
+}
+
+static unsigned int dec10_setclrf(DisasContext *dc)
+{
+    uint32_t flags;
+    unsigned int set = ~dc->opcode & 1;
+
+    flags = EXTRACT_FIELD(dc->ir, 0, 3)
+            | (EXTRACT_FIELD(dc->ir, 12, 15) << 4);
+    LOG_DIS("%s set=%d flags=%x\n", __func__, set, flags);
+
+
+    if (flags & X_FLAG) {
+        dc->flagx_known = 1;
+        if (set)
+            dc->flags_x = X_FLAG;
+        else
+            dc->flags_x = 0;
+    }
+
+    cris_evaluate_flags (dc);
+    cris_update_cc_op(dc, CC_OP_FLAGS, 4);
+    cris_update_cc_x(dc);
+    tcg_gen_movi_tl(cc_op, dc->cc_op);
+
+    if (set) {
+        tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
+    } else {
+        tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags);
+    }
+
+    dc->flags_uptodate = 1;
+    dc->clear_x = 0;
+    cris_lock_irq(dc);
+    return 2;
+}
+
+static inline void dec10_reg_prep_sext(DisasContext *dc, int size, int sext,
+				       TCGv dd, TCGv ds, TCGv sd, TCGv ss)
+{
+    if (sext) {
+        t_gen_sext(dd, sd, size);
+        t_gen_sext(ds, ss, size);
+    } else {
+        t_gen_zext(dd, sd, size);
+        t_gen_zext(ds, ss, size);
+    }
+}
+
+static void dec10_reg_alu(DisasContext *dc, int op, int size, int sext)
+{
+    TCGv t[2];
+
+    t[0] = tcg_temp_new();
+    t[1] = tcg_temp_new();
+    dec10_reg_prep_sext(dc, size, sext,
+                        t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
+
+    if (op == CC_OP_LSL || op == CC_OP_LSR || op == CC_OP_ASR) {
+        tcg_gen_andi_tl(t[1], t[1], 63);
+    }
+
+    assert(dc->dst != 15);
+    cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], size);
+    tcg_temp_free(t[0]);
+    tcg_temp_free(t[1]);
+}
+
+static void dec10_reg_bound(DisasContext *dc, int size)
+{
+    TCGv t;
+
+    t = tcg_temp_local_new();
+    t_gen_zext(t, cpu_R[dc->src], size);
+    cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
+    tcg_temp_free(t);
+}
+
+static void dec10_reg_mul(DisasContext *dc, int size, int sext)
+{
+    int op = sext ? CC_OP_MULS : CC_OP_MULU;
+    TCGv t[2];
+
+    t[0] = tcg_temp_new();
+    t[1] = tcg_temp_new();
+    dec10_reg_prep_sext(dc, size, sext,
+                        t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
+
+    cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], 4);
+
+    tcg_temp_free(t[0]);
+    tcg_temp_free(t[1]);
+}
+
+
+static void dec10_reg_movs(DisasContext *dc)
+{
+    int size = (dc->size & 1) + 1;
+    TCGv t;
+
+    LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
+    cris_cc_mask(dc, CC_MASK_NZVC);
+
+    t = tcg_temp_new();
+    if (dc->ir & 32)
+        t_gen_sext(t, cpu_R[dc->src], size);
+    else
+        t_gen_zext(t, cpu_R[dc->src], size);
+
+    cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
+    tcg_temp_free(t);
+}
+
+static void dec10_reg_alux(DisasContext *dc, int op)
+{
+    int size = (dc->size & 1) + 1;
+    TCGv t;
+
+    LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
+    cris_cc_mask(dc, CC_MASK_NZVC);
+
+    t = tcg_temp_new();
+    if (dc->ir & 32)
+        t_gen_sext(t, cpu_R[dc->src], size);
+    else
+        t_gen_zext(t, cpu_R[dc->src], size);
+
+    cris_alu(dc, op, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
+    tcg_temp_free(t);
+}
+
+static void dec10_reg_mov_pr(DisasContext *dc)
+{
+    LOG_DIS("move p%d r%d sz=%d\n", dc->dst, dc->src, preg_sizes_v10[dc->dst]);
+    cris_lock_irq(dc);
+    if (dc->src == 15) {
+        tcg_gen_mov_tl(env_btarget, cpu_PR[dc->dst]);
+        cris_prepare_jmp(dc, JMP_INDIRECT);
+        return;
+    }
+    if (dc->dst == PR_CCS) {
+        cris_evaluate_flags(dc); 
+    }
+    cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src],
+                 cpu_R[dc->src], cpu_PR[dc->dst], preg_sizes_v10[dc->dst]);
+}
+
+static void dec10_reg_abs(DisasContext *dc)
+{
+	TCGv t0;
+
+	LOG_DIS("abs $r%u, $r%u\n",
+		    dc->src, dc->dst);
+
+	assert(dc->dst != 15);
+	t0 = tcg_temp_new();
+	tcg_gen_sari_tl(t0, cpu_R[dc->src], 31);
+	tcg_gen_xor_tl(cpu_R[dc->dst], cpu_R[dc->src], t0);
+	tcg_gen_sub_tl(t0, cpu_R[dc->dst], t0);
+
+	cris_alu(dc, CC_OP_MOVE,
+		    cpu_R[dc->dst], cpu_R[dc->dst], t0, 4);
+	tcg_temp_free(t0);
+}
+
+static void dec10_reg_swap(DisasContext *dc)
+{
+    TCGv t0;
+
+    LOG_DIS("not $r%d, $r%d\n", dc->src, dc->dst);
+
+    cris_cc_mask(dc, CC_MASK_NZVC);
+    t0 = tcg_temp_new();
+    t_gen_mov_TN_reg(t0, dc->src);
+    if (dc->dst & 8)
+        tcg_gen_not_tl(t0, t0);
+    if (dc->dst & 4)
+        t_gen_swapw(t0, t0);
+    if (dc->dst & 2)
+        t_gen_swapb(t0, t0);
+    if (dc->dst & 1)
+        t_gen_swapr(t0, t0);
+    cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], cpu_R[dc->src], t0, 4);
+    tcg_temp_free(t0);
+}
+
+static void dec10_reg_scc(DisasContext *dc)
+{
+        int cond = dc->dst;
+
+        LOG_DIS("s%s $r%u\n",
+                    cc_name(cond), dc->src);
+
+        if (cond != CC_A)
+        {
+                int l1;
+
+                gen_tst_cc (dc, cpu_R[dc->src], cond);
+                l1 = gen_new_label();
+                tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->src], 0, l1);
+                tcg_gen_movi_tl(cpu_R[dc->src], 1);
+                gen_set_label(l1);
+        }
+        else
+                tcg_gen_movi_tl(cpu_R[dc->src], 1);
+
+        cris_cc_mask(dc, 0);
+}
+
+static unsigned int dec10_reg(DisasContext *dc)
+{
+    TCGv t;
+    unsigned int insn_len = 2;
+    unsigned int size = dec10_size(dc->size);
+    unsigned int tmp;
+
+    if (dc->size != 3) {
+        switch (dc->opcode) {
+            case CRISV10_REG_MOVE_R:
+                LOG_DIS("move.%d $r%d, $r%d\n", dc->size, dc->src, dc->dst);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_MOVE, size, 0);
+                if (dc->dst == 15) {
+                    tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
+                    cris_prepare_jmp(dc, JMP_INDIRECT);
+                    dc->delayed_branch = 1;
+                }
+                break;
+            case CRISV10_REG_MOVX:
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_movs(dc);
+                break;
+            case CRISV10_REG_ADDX:
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alux(dc, CC_OP_ADD);
+                break;
+            case CRISV10_REG_SUBX:
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alux(dc, CC_OP_SUB);
+                break;
+            case CRISV10_REG_ADD:
+                LOG_DIS("add $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_ADD, size, 0);
+                break;
+            case CRISV10_REG_SUB:
+                LOG_DIS("sub $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_SUB, size, 0);
+                break;
+            case CRISV10_REG_CMP:
+                LOG_DIS("cmp $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_CMP, size, 0);
+                break;
+            case CRISV10_REG_BOUND:
+                LOG_DIS("bound $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_bound(dc, size);
+                break;
+            case CRISV10_REG_AND:
+                LOG_DIS("and $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_AND, size, 0);
+                break;
+            case CRISV10_REG_ADDI:
+                if (dc->src == 15) {
+                    /* nop.  */
+                    return 2;
+                }
+                t = tcg_temp_new();
+                LOG_DIS("addi r%d r%d size=%d\n", dc->src, dc->dst, dc->size);
+                tcg_gen_shli_tl(t, cpu_R[dc->dst], dc->size & 3);
+                tcg_gen_add_tl(cpu_R[dc->src], cpu_R[dc->src], t);
+                tcg_temp_free(t);
+                break;
+            case CRISV10_REG_LSL:
+                LOG_DIS("lsl $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_LSL, size, 0);
+                break;
+            case CRISV10_REG_LSR:
+                LOG_DIS("lsr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_LSR, size, 0);
+                break;
+            case CRISV10_REG_ASR:
+                LOG_DIS("asr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_ASR, size, 1);
+                break;
+            case CRISV10_REG_OR:
+                LOG_DIS("or $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_OR, size, 0);
+                break;
+            case CRISV10_REG_NEG:
+                LOG_DIS("neg $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_NEG, size, 0);
+                break;
+            case CRISV10_REG_BIAP:
+                LOG_DIS("BIAP pc=%x reg %d r%d r%d size=%d\n", dc->pc,
+                         dc->opcode, dc->src, dc->dst, size);
+                switch (size) {
+                    case 4: tmp = 2; break;
+                    case 2: tmp = 1; break;
+                    case 1: tmp = 0; break;
+                    default: assert(0); break;
+                }
+
+                t = tcg_temp_new();
+                tcg_gen_shli_tl(t, cpu_R[dc->dst], tmp);
+                if (dc->src == 15) {
+                    tcg_gen_addi_tl(cpu_PR[PR_PREFIX], t, ((dc->pc +2)| 1) + 1);
+                } else {
+                    tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_R[dc->src], t);
+                }
+                tcg_temp_free(t);
+                cris_set_prefix(dc);
+                break;
+
+            default:
+                LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
+                         dc->opcode, dc->src, dc->dst);
+                assert(0);
+                break;
+        }
+    } else {
+        switch (dc->opcode) {
+            case CRISV10_REG_MOVX:
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_movs(dc);
+                break;
+            case CRISV10_REG_ADDX:
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alux(dc, CC_OP_ADD);
+                break;
+            case CRISV10_REG_SUBX:
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alux(dc, CC_OP_SUB);
+                break;
+            case CRISV10_REG_MOVE_SPR_R:
+                cris_evaluate_flags(dc);
+                cris_cc_mask(dc, 0);
+                dec10_reg_mov_pr(dc);
+                break;
+            case CRISV10_REG_MOVE_R_SPR:
+                LOG_DIS("move r%d p%d\n", dc->src, dc->dst);
+                cris_evaluate_flags(dc);
+                if (dc->src != 11) /* fast for srp.  */
+                    dc->cpustate_changed = 1;
+                t_gen_mov_preg_TN(dc, dc->dst, cpu_R[dc->src]);
+                break;
+            case CRISV10_REG_SETF:
+            case CRISV10_REG_CLEARF:
+                dec10_setclrf(dc);
+                break;
+            case CRISV10_REG_SWAP:
+                dec10_reg_swap(dc);
+                break;
+            case CRISV10_REG_ABS:
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_abs(dc);
+                break;
+            case CRISV10_REG_LZ:
+                LOG_DIS("lz $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_LZ, 4, 0);
+                break;
+            case CRISV10_REG_XOR:
+                LOG_DIS("xor $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_alu(dc, CC_OP_XOR, 4, 0);
+                break;
+            case CRISV10_REG_BTST:
+                LOG_DIS("btst $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                cris_update_cc_op(dc, CC_OP_FLAGS, 4);
+                gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->dst],
+                           cpu_R[dc->src], cpu_PR[PR_CCS]);
+                break;
+            case CRISV10_REG_DSTEP:
+                LOG_DIS("dstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                cris_alu(dc, CC_OP_DSTEP, cpu_R[dc->dst],
+                            cpu_R[dc->dst], cpu_R[dc->src], 4);
+                break;
+            case CRISV10_REG_MSTEP:
+                LOG_DIS("mstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
+                cris_evaluate_flags(dc);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst],
+                            cpu_R[dc->dst], cpu_R[dc->src], 4);
+                break;
+            case CRISV10_REG_SCC:
+                dec10_reg_scc(dc);
+                break;
+            default:
+                LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
+                         dc->opcode, dc->src, dc->dst);
+                assert(0);
+                break;
+        }
+    }
+    return insn_len;
+}
+
+static unsigned int dec10_ind_move_m_r(DisasContext *dc, unsigned int size)
+{
+    unsigned int insn_len = 2;
+    TCGv t;
+
+    LOG_DIS("%s: move.%d [$r%d], $r%d\n", __func__,
+             size, dc->src, dc->dst);
+
+    cris_cc_mask(dc, CC_MASK_NZVC);
+    t = tcg_temp_new();
+    insn_len += dec10_prep_move_m(dc, 0, size, t);
+    cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, size);
+    if (dc->dst == 15) {
+        tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
+        cris_prepare_jmp(dc, JMP_INDIRECT);
+        dc->delayed_branch = 1;
+        return insn_len;
+    }
+
+    tcg_temp_free(t);
+    return insn_len;
+}
+
+static unsigned int dec10_ind_move_r_m(DisasContext *dc, unsigned int size)
+{
+    unsigned int insn_len = 2;
+    TCGv addr;
+
+    LOG_DIS("move.%d $r%d, [$r%d]\n", dc->size, dc->src, dc->dst);
+    addr = tcg_temp_new();
+    crisv10_prepare_memaddr(dc, addr, size);
+    gen_store(dc, addr, cpu_R[dc->dst], size);
+    insn_len += crisv10_post_memaddr(dc, size);
+
+    return insn_len;
+}
+
+static unsigned int dec10_ind_move_m_pr(DisasContext *dc)
+{
+    unsigned int insn_len = 2, rd = dc->dst;
+    TCGv t, addr;
+
+    LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
+    cris_lock_irq(dc);
+
+    addr = tcg_temp_new();
+    t = tcg_temp_new();
+    insn_len += dec10_prep_move_m(dc, 0, 4, t);
+    if (rd == 15) {
+        tcg_gen_mov_tl(env_btarget, t);
+        cris_prepare_jmp(dc, JMP_INDIRECT);
+        dc->delayed_branch = 1;
+        return insn_len;
+    }
+
+    tcg_gen_mov_tl(cpu_PR[rd], t);
+    dc->cpustate_changed = 1;
+    tcg_temp_free(addr);
+    tcg_temp_free(t);
+    return insn_len;
+}
+
+static unsigned int dec10_ind_move_pr_m(DisasContext *dc)
+{
+    unsigned int insn_len = 2, size = preg_sizes_v10[dc->dst];
+    TCGv addr, t0;
+
+    LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
+
+    addr = tcg_temp_new();
+    crisv10_prepare_memaddr(dc, addr, size);
+    if (dc->dst == PR_CCS) {
+        t0 = tcg_temp_new();
+        cris_evaluate_flags(dc);
+        tcg_gen_andi_tl(t0, cpu_PR[PR_CCS], ~PFIX_FLAG);
+        gen_store(dc, addr, t0, size);
+        tcg_temp_free(t0);
+    } else {
+        gen_store(dc, addr, cpu_PR[dc->dst], size);
+    }
+    t0 = tcg_temp_new();
+    insn_len += crisv10_post_memaddr(dc, size);
+    cris_lock_irq(dc);
+
+    return insn_len;
+}
+
+static void dec10_movem_r_m(DisasContext *dc)
+{
+    int i, pfix = dc->tb_flags & PFIX_FLAG;
+    TCGv addr, t0;
+
+    LOG_DIS("%s r%d, [r%d] pi=%d ir=%x\n", __func__,
+              dc->dst, dc->src, dc->postinc, dc->ir);
+
+    addr = tcg_temp_new();
+    t0 = tcg_temp_new();
+    crisv10_prepare_memaddr(dc, addr, 4);
+    tcg_gen_mov_tl(t0, addr);
+    for (i = dc->dst; i >= 0; i--) {
+        if ((pfix && dc->mode == CRISV10_MODE_AUTOINC) && dc->src == i) {
+            gen_store(dc, addr, t0, 4);
+        } else {
+            gen_store(dc, addr, cpu_R[i], 4);
+        }
+        tcg_gen_addi_tl(addr, addr, 4);
+    }
+
+    if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
+        tcg_gen_mov_tl(cpu_R[dc->src], t0);
+    }
+
+    if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
+        tcg_gen_mov_tl(cpu_R[dc->src], addr);
+    }
+    tcg_temp_free(addr);
+    tcg_temp_free(t0);
+}
+
+static void dec10_movem_m_r(DisasContext *dc)
+{
+    int i, pfix = dc->tb_flags & PFIX_FLAG;
+    TCGv addr, t0;
+
+    LOG_DIS("%s [r%d], r%d pi=%d ir=%x\n", __func__,
+              dc->src, dc->dst, dc->postinc, dc->ir);
+
+    addr = tcg_temp_new();
+    t0 = tcg_temp_new();
+    crisv10_prepare_memaddr(dc, addr, 4);
+    tcg_gen_mov_tl(t0, addr);
+    for (i = dc->dst; i >= 0; i--) {
+        gen_load(dc, cpu_R[i], addr, 4, 0);
+        tcg_gen_addi_tl(addr, addr, 4);
+    }
+
+    if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
+        tcg_gen_mov_tl(cpu_R[dc->src], t0);
+    }
+
+
+    if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
+        tcg_gen_mov_tl(cpu_R[dc->src], addr);
+    }
+    tcg_temp_free(addr);
+    tcg_temp_free(t0);
+}
+
+static int dec10_ind_alu(DisasContext *dc, int op, unsigned int size)
+{
+    int insn_len = 0;
+    int rd = dc->dst;
+    TCGv t[2];
+
+    cris_alu_m_alloc_temps(t);
+    insn_len += dec10_prep_move_m(dc, 0, size, t[0]);
+    cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t[0], size);
+    if (dc->dst == 15) {
+        tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
+        cris_prepare_jmp(dc, JMP_INDIRECT);
+        dc->delayed_branch = 1;
+        return insn_len;
+    }
+
+    cris_alu_m_free_temps(t);
+
+    return insn_len;
+}
+
+static int dec10_ind_bound(DisasContext *dc, unsigned int size)
+{
+    int insn_len = 0;
+    int rd = dc->dst;
+    TCGv t;
+
+    t = tcg_temp_local_new();
+    insn_len += dec10_prep_move_m(dc, 0, size, t);
+    cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[rd], t, 4);
+    if (dc->dst == 15) {
+        tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
+        cris_prepare_jmp(dc, JMP_INDIRECT);
+        dc->delayed_branch = 1;
+        return insn_len;
+    }
+
+    tcg_temp_free(t);
+    return insn_len;
+}
+
+static int dec10_alux_m(DisasContext *dc, int op)
+{
+    unsigned int size = (dc->size & 1) ? 2 : 1;
+    unsigned int sx = !!(dc->size & 2);
+    int insn_len = 2;
+    int rd = dc->dst;
+    TCGv t;
+
+    LOG_DIS("addx size=%d sx=%d op=%d %d\n", size, sx, dc->src, dc->dst);
+
+    t = tcg_temp_new();
+
+    cris_cc_mask(dc, CC_MASK_NZVC);
+    insn_len += dec10_prep_move_m(dc, sx, size, t);
+    cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t, 4);
+    if (dc->dst == 15) {
+        tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
+        cris_prepare_jmp(dc, JMP_INDIRECT);
+        dc->delayed_branch = 1;
+        return insn_len;
+    }
+
+    tcg_temp_free(t);
+    return insn_len;
+}
+
+static int dec10_dip(DisasContext *dc)
+{
+    int insn_len = 2;
+    uint32_t imm;
+
+    LOG_DIS("dip pc=%x opcode=%d r%d r%d\n",
+              dc->pc, dc->opcode, dc->src, dc->dst);
+    if (dc->src == 15) {
+        imm = ldl_code(dc->pc + 2);
+        tcg_gen_movi_tl(cpu_PR[PR_PREFIX], imm);
+        if (dc->postinc)
+            insn_len += 4;
+        tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len - 2);
+    } else {
+        gen_load(dc, cpu_PR[PR_PREFIX], cpu_R[dc->src], 4, 0);
+        if (dc->postinc)
+            tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], 4);
+    }
+
+    cris_set_prefix(dc);
+    return insn_len;
+}
+
+static int dec10_bdap_m(DisasContext *dc, int size)
+{
+    int insn_len = 2;
+    int rd = dc->dst;
+
+    LOG_DIS("bdap_m pc=%x opcode=%d r%d r%d sz=%d\n",
+              dc->pc, dc->opcode, dc->src, dc->dst, size);
+
+    assert(dc->dst != 15);
+#if 0
+    /* 8bit embedded offset?  */
+    if (!dc->postinc && (dc->ir & (1 << 11))) {
+        int simm = dc->ir & 0xff;
+
+       // assert(0);
+        /* sign extended.  */
+        simm = (int8_t)simm;
+
+        tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
+
+        cris_set_prefix(dc);
+        return insn_len;
+    }
+#endif
+    /* Now the rest of the modes are truely indirect.  */
+    insn_len += dec10_prep_move_m(dc, 1, size, cpu_PR[PR_PREFIX]);
+    tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_PR[PR_PREFIX], cpu_R[rd]);
+    cris_set_prefix(dc);
+    return insn_len;
+}
+
+static unsigned int dec10_ind(DisasContext *dc)
+{
+    unsigned int insn_len = 2;
+    unsigned int size = dec10_size(dc->size);
+    uint32_t imm;
+    int32_t simm;
+    TCGv t[2];
+
+    if (dc->size != 3) {
+        switch (dc->opcode) {
+            case CRISV10_IND_MOVE_M_R:
+                return dec10_ind_move_m_r(dc, size);
+                break;
+            case CRISV10_IND_MOVE_R_M:
+                return dec10_ind_move_r_m(dc, size);
+                break;
+            case CRISV10_IND_CMP:
+                LOG_DIS("cmp size=%d op=%d %d\n",  size, dc->src, dc->dst);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                insn_len += dec10_ind_alu(dc, CC_OP_CMP, size);
+                break;
+            case CRISV10_IND_TEST:
+                LOG_DIS("test size=%d op=%d %d\n",  size, dc->src, dc->dst);
+
+                cris_evaluate_flags(dc);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                cris_alu_m_alloc_temps(t);
+                insn_len += dec10_prep_move_m(dc, 0, size, t[0]);
+                tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
+                cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
+                         t[0], tcg_const_tl(0), size);
+                cris_alu_m_free_temps(t);
+                break;
+            case CRISV10_IND_ADD:
+                LOG_DIS("add size=%d op=%d %d\n",  size, dc->src, dc->dst);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                insn_len += dec10_ind_alu(dc, CC_OP_ADD, size);
+                break;
+            case CRISV10_IND_SUB:
+                LOG_DIS("sub size=%d op=%d %d\n",  size, dc->src, dc->dst);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                insn_len += dec10_ind_alu(dc, CC_OP_SUB, size);
+                break;
+            case CRISV10_IND_BOUND:
+                LOG_DIS("bound size=%d op=%d %d\n",  size, dc->src, dc->dst);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                insn_len += dec10_ind_bound(dc, size);
+                break;
+            case CRISV10_IND_AND:
+                LOG_DIS("and size=%d op=%d %d\n",  size, dc->src, dc->dst);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                insn_len += dec10_ind_alu(dc, CC_OP_AND, size);
+                break;
+            case CRISV10_IND_OR:
+                LOG_DIS("or size=%d op=%d %d\n",  size, dc->src, dc->dst);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                insn_len += dec10_ind_alu(dc, CC_OP_OR, size);
+                break;
+            case CRISV10_IND_MOVX:
+                insn_len = dec10_alux_m(dc, CC_OP_MOVE);
+                break;
+            case CRISV10_IND_ADDX:
+                insn_len = dec10_alux_m(dc, CC_OP_ADD);
+                break;
+            case CRISV10_IND_SUBX:
+                insn_len = dec10_alux_m(dc, CC_OP_SUB);
+                break;
+            case CRISV10_IND_CMPX:
+                insn_len = dec10_alux_m(dc, CC_OP_CMP);
+                break;
+            case CRISV10_IND_MUL:
+                /* This is a reg insn coded in the mem indir space.  */
+                LOG_DIS("mul pc=%x opcode=%d\n", dc->pc, dc->opcode);
+                cris_cc_mask(dc, CC_MASK_NZVC);
+                dec10_reg_mul(dc, size, dc->ir & (1 << 10));
+                break;
+            case CRISV10_IND_BDAP_M:
+                insn_len = dec10_bdap_m(dc, size);
+                break;
+            default:
+                LOG_DIS("pc=%x var-ind.%d %d r%d r%d\n",
+                          dc->pc, size, dc->opcode, dc->src, dc->dst);
+                assert(0);
+                break;
+        }
+        return insn_len;
+    }
+
+    switch (dc->opcode) {
+        case CRISV10_IND_MOVE_M_SPR:
+            insn_len = dec10_ind_move_m_pr(dc);
+            break;
+        case CRISV10_IND_MOVE_SPR_M:
+            insn_len = dec10_ind_move_pr_m(dc);
+            break;
+        case CRISV10_IND_JUMP_M:
+            if (dc->src == 15) {
+                LOG_DIS("jump.%d %d r%d r%d\n", size,
+                         dc->opcode, dc->src, dc->dst);
+                imm = ldl_code(dc->pc + 2);
+                if (dc->mode == CRISV10_MODE_AUTOINC)
+                    insn_len += size;
+
+                t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
+                tcg_gen_movi_tl(env_btarget, imm);
+                cris_prepare_jmp(dc, JMP_INDIRECT);
+                dc->delayed_branch--; /* v10 has no dslot here.  */
+            } else {
+                if (dc->dst == 14) {
+                    LOG_DIS("break %d\n", dc->src);
+                    cris_evaluate_flags(dc);
+                    tcg_gen_movi_tl(env_pc, dc->pc + 2);
+                    t_gen_raise_exception(EXCP_BREAK);
+                    dc->is_jmp = DISAS_UPDATE;
+                    return insn_len;
+                }
+                LOG_DIS("%d: jump.%d %d r%d r%d\n", __LINE__, size,
+                         dc->opcode, dc->src, dc->dst);
+                t[0] = tcg_temp_new();
+                t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
+                crisv10_prepare_memaddr(dc, t[0], size);
+                gen_load(dc, env_btarget, t[0], 4, 0);
+                insn_len += crisv10_post_memaddr(dc, size);
+                cris_prepare_jmp(dc, JMP_INDIRECT);
+                dc->delayed_branch--; /* v10 has no dslot here.  */
+                tcg_temp_free(t[0]);
+            }
+            break;
+
+        case CRISV10_IND_MOVEM_R_M:
+            LOG_DIS("movem_r_m pc=%x opcode=%d r%d r%d\n",
+                        dc->pc, dc->opcode, dc->dst, dc->src);
+            dec10_movem_r_m(dc);
+            break;
+        case CRISV10_IND_MOVEM_M_R:
+            LOG_DIS("movem_m_r pc=%x opcode=%d\n", dc->pc, dc->opcode);
+            dec10_movem_m_r(dc);
+            break;
+        case CRISV10_IND_JUMP_R:
+            LOG_DIS("jmp pc=%x opcode=%d r%d r%d\n",
+                        dc->pc, dc->opcode, dc->dst, dc->src);
+            tcg_gen_mov_tl(env_btarget, cpu_R[dc->src]);
+            t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
+            cris_prepare_jmp(dc, JMP_INDIRECT);
+            dc->delayed_branch--; /* v10 has no dslot here.  */
+            break;
+        case CRISV10_IND_MOVX:
+            insn_len = dec10_alux_m(dc, CC_OP_MOVE);
+            break;
+        case CRISV10_IND_ADDX:
+            insn_len = dec10_alux_m(dc, CC_OP_ADD);
+            break;
+        case CRISV10_IND_SUBX:
+            insn_len = dec10_alux_m(dc, CC_OP_SUB);
+            break;
+        case CRISV10_IND_CMPX:
+            insn_len = dec10_alux_m(dc, CC_OP_CMP);
+            break;
+        case CRISV10_IND_DIP:
+            insn_len = dec10_dip(dc);
+            break;
+        case CRISV10_IND_BCC_M:
+
+            cris_cc_mask(dc, 0);
+            imm = ldsw_code(dc->pc + 2);
+            simm = (int16_t)imm;
+            simm += 4;
+
+            LOG_DIS("bcc_m: b%s %x\n", cc_name(dc->cond), dc->pc + simm);
+            cris_prepare_cc_branch(dc, simm, dc->cond);
+            insn_len = 4;
+            break;
+        default:
+            LOG_DIS("ERROR pc=%x opcode=%d\n", dc->pc, dc->opcode);
+            assert(0);
+            break;
+    }
+
+    return insn_len;
+}
+
+static unsigned int crisv10_decoder(DisasContext *dc)
+{
+    unsigned int insn_len = 2;
+
+    if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)))
+        tcg_gen_debug_insn_start(dc->pc);
+
+    /* Load a halfword onto the instruction register.  */
+    dc->ir = lduw_code(dc->pc);
+
+    /* Now decode it.  */
+    dc->opcode   = EXTRACT_FIELD(dc->ir, 6, 9);
+    dc->mode     = EXTRACT_FIELD(dc->ir, 10, 11);
+    dc->src      = EXTRACT_FIELD(dc->ir, 0, 3);
+    dc->size     = EXTRACT_FIELD(dc->ir, 4, 5);
+    dc->cond = dc->dst = EXTRACT_FIELD(dc->ir, 12, 15);
+    dc->postinc  = EXTRACT_FIELD(dc->ir, 10, 10);
+
+    dc->clear_prefix = 1;
+
+    /* FIXME: What if this insn insn't 2 in length??  */
+    if (dc->src == 15 || dc->dst == 15)
+        tcg_gen_movi_tl(cpu_R[15], dc->pc + 2);
+
+    switch (dc->mode) {
+        case CRISV10_MODE_QIMMEDIATE:
+            insn_len = dec10_quick_imm(dc);
+            break;
+        case CRISV10_MODE_REG:
+            insn_len = dec10_reg(dc);
+            break;
+        case CRISV10_MODE_AUTOINC:
+        case CRISV10_MODE_INDIRECT:
+            insn_len = dec10_ind(dc);
+            break;
+    }
+
+    if (dc->clear_prefix && dc->tb_flags & PFIX_FLAG) {
+        dc->tb_flags &= ~PFIX_FLAG;
+        tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~PFIX_FLAG);
+        dc->cpustate_changed = 1;
+    }
+
+    return insn_len;
+}
+
+static CPUCRISState *cpu_crisv10_init (CPUState *env)
+{
+	int i;
+
+	cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
+	cc_x = tcg_global_mem_new(TCG_AREG0,
+				  offsetof(CPUState, cc_x), "cc_x");
+	cc_src = tcg_global_mem_new(TCG_AREG0,
+				    offsetof(CPUState, cc_src), "cc_src");
+	cc_dest = tcg_global_mem_new(TCG_AREG0,
+				     offsetof(CPUState, cc_dest),
+				     "cc_dest");
+	cc_result = tcg_global_mem_new(TCG_AREG0,
+				       offsetof(CPUState, cc_result),
+				       "cc_result");
+	cc_op = tcg_global_mem_new(TCG_AREG0,
+				   offsetof(CPUState, cc_op), "cc_op");
+	cc_size = tcg_global_mem_new(TCG_AREG0,
+				     offsetof(CPUState, cc_size),
+				     "cc_size");
+	cc_mask = tcg_global_mem_new(TCG_AREG0,
+				     offsetof(CPUState, cc_mask),
+				     "cc_mask");
+
+	env_pc = tcg_global_mem_new(TCG_AREG0, 
+				    offsetof(CPUState, pc),
+				    "pc");
+	env_btarget = tcg_global_mem_new(TCG_AREG0,
+					 offsetof(CPUState, btarget),
+					 "btarget");
+	env_btaken = tcg_global_mem_new(TCG_AREG0,
+					 offsetof(CPUState, btaken),
+					 "btaken");
+	for (i = 0; i < 16; i++) {
+		cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
+					      offsetof(CPUState, regs[i]),
+					      regnames_v10[i]);
+	}
+	for (i = 0; i < 16; i++) {
+		cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
+					       offsetof(CPUState, pregs[i]),
+					       pregnames_v10[i]);
+	}
+
+	return env;
+}
+