[v8,08/16] target-or32: Add instruction translation

Add OpenRISC instruction tanslation routines.

Signed-off-by: Jia Liu <proljc@gmail.com>
---
 target-openrisc/translate.c | 1678 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 1678 insertions(+)

On Sun, Jul 1, 2012 at 2:45 AM, Jia Liu <proljc@gmail.com> wrote:
> Add OpenRISC instruction tanslation routines.
>
> Signed-off-by: Jia Liu <proljc@gmail.com>
> ---
>  target-openrisc/translate.c | 1678 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 1678 insertions(+)
>
> diff --git a/target-openrisc/translate.c b/target-openrisc/translate.c
> index 4d4aa23..b69722c 100644
> --- a/target-openrisc/translate.c
> +++ b/target-openrisc/translate.c
> @@ -26,6 +26,10 @@
>  #include "qemu-log.h"
>  #include "config.h"
>
> +#include "helper.h"
> +#define GEN_HELPER 1
> +#include "helper.h"
> +
>  #define OPENRISC_DISAS
>
>  #ifdef OPENRISC_DISAS
> @@ -34,14 +38,1688 @@
>  #  define LOG_DIS(...) do { } while (0)
>  #endif
>
> +typedef struct DisasContext {
> +    TranslationBlock *tb;
> +    target_ulong pc, ppc, npc;
> +    uint32_t tb_flags, synced_flags, flags;
> +    uint32_t is_jmp;
> +    uint32_t mem_idx;
> +    int singlestep_enabled;
> +    uint32_t delayed_branch;
> +} DisasContext;
> +
> +static TCGv_ptr cpu_env;
> +static TCGv cpu_sr;
> +static TCGv cpu_R[32];
> +static TCGv cpu_pc;
> +static TCGv jmp_pc;            /* l.jr/l.jalr temp pc */
> +static TCGv cpu_npc;
> +static TCGv cpu_ppc;
> +static TCGv_i32 env_btaken;    /* bf/bnf , F flag taken */
> +static TCGv_i32 fpcsr;
> +static TCGv machi, maclo;
> +static TCGv fpmaddhi, fpmaddlo;
> +static TCGv_i32 env_flags;
> +#include "gen-icount.h"
> +
>  void openrisc_translate_init(void)
>  {
> +    static const char * const regnames[] = {
> +        "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",
> +    };
> +    int i;
> +
> +    cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
> +    cpu_sr = tcg_global_mem_new(TCG_AREG0,
> +                                offsetof(CPUOpenRISCState, sr), "sr");
> +    env_flags = tcg_global_mem_new_i32(TCG_AREG0,
> +                                       offsetof(CPUOpenRISCState, flags),
> +                                       "flags");
> +    cpu_pc = tcg_global_mem_new(TCG_AREG0,
> +                                offsetof(CPUOpenRISCState, pc), "pc");
> +    cpu_npc = tcg_global_mem_new(TCG_AREG0,
> +                                 offsetof(CPUOpenRISCState, npc), "npc");
> +    cpu_ppc = tcg_global_mem_new(TCG_AREG0,
> +                                 offsetof(CPUOpenRISCState, ppc), "ppc");
> +    jmp_pc = tcg_global_mem_new(TCG_AREG0,
> +                                offsetof(CPUOpenRISCState, jmp_pc), "jmp_pc");
> +    env_btaken = tcg_global_mem_new_i32(TCG_AREG0,
> +                                        offsetof(CPUOpenRISCState, btaken),
> +                                        "btaken");
> +    fpcsr = tcg_global_mem_new_i32(TCG_AREG0,
> +                                   offsetof(CPUOpenRISCState, fpcsr),
> +                                   "fpcsr");
> +    machi = tcg_global_mem_new(TCG_AREG0,
> +                               offsetof(CPUOpenRISCState, machi),
> +                               "machi");
> +    maclo = tcg_global_mem_new(TCG_AREG0,
> +                               offsetof(CPUOpenRISCState, maclo),
> +                               "maclo");
> +    fpmaddhi = tcg_global_mem_new(TCG_AREG0,
> +                                  offsetof(CPUOpenRISCState, fpmaddhi),
> +                                  "fpmaddhi");
> +    fpmaddlo = tcg_global_mem_new(TCG_AREG0,
> +                                  offsetof(CPUOpenRISCState, fpmaddlo),
> +                                  "fpmaddlo");
> +    for (i = 0; i < 32; i++) {
> +        cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
> +                                      offsetof(CPUOpenRISCState, gpr[i]),
> +                                      regnames[i]);
> +    }
> +#define GEN_HELPER 2
> +#include "helper.h"
> +}
> +
> +/* Writeback SR_F transaltion-space to execution-space.  */
> +static inline void wb_SR_F(void)
> +{
> +    int label;
> +
> +    label = gen_new_label();
> +    tcg_gen_andi_tl(cpu_sr, cpu_sr, ~SR_F);
> +    tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, label);
> +    tcg_gen_ori_tl(cpu_sr, cpu_sr, SR_F);
> +    gen_set_label(label);
> +}
> +
> +static inline int zero_extend(unsigned int val, int width)
> +{
> +    return val & ((1 << width) - 1);
> +}
> +
> +static inline int sign_extend(unsigned int val, int width)
> +{
> +    int sval;
> +
> +    /* LSL */
> +    val <<= TARGET_LONG_BITS - width;
> +    sval = val;
> +    /* ASR.  */
> +    sval >>= TARGET_LONG_BITS - width;
> +    return sval;
> +}
> +
> +static inline void gen_sync_flags(DisasContext *dc)
> +{
> +    /* Sync the tb dependent flag between translate and runtime.  */
> +    if (dc->tb_flags != dc->synced_flags) {
> +        tcg_gen_movi_tl(env_flags, dc->tb_flags);
> +        dc->synced_flags = dc->tb_flags;
> +    }
> +}
> +
> +static void gen_exception(DisasContext *dc, unsigned int excp)
> +{
> +    TCGv_i32 tmp = tcg_const_i32(excp);
> +    gen_helper_exception(cpu_env, tmp);
> +    tcg_temp_free_i32(tmp);
> +}
> +
> +static void gen_illegal_exception(DisasContext *dc)
> +{
> +    tcg_gen_movi_tl(cpu_pc, dc->pc);
> +    gen_exception(dc, EXCP_ILLEGAL);
> +    dc->is_jmp = DISAS_UPDATE;
> +}
> +
> +#ifdef TARGET_OPENRISC64
> +static void check_ob64s(DisasContext *dc)
> +{
> +    if (!(dc->flags & CPUCFGR_OB64S)) {
> +        gen_illegal_exception(dc);
> +    }
> +}
> +
> +static void check_of64s(DisasContext *dc)
> +{
> +    if (!(dc->flags & CPUCFGR_OF64S)) {
> +        gen_illegal_exception(dc);
> +    }
> +}
> +
> +/* not used yet, open it when we need or64.  */
> +/*static void check_ov64s(DisasContext *dc)
> +{
> +    if (!(dc->flags & CPUCFGR_OV64S)) {
> +        gen_illegal_exception(dc);
> +    }
> +}*/
> +#endif
> +
> +static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
> +{
> +    TranslationBlock *tb;
> +    tb = dc->tb;
> +    if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) &&
> +                                       likely(!dc->singlestep_enabled)) {
> +        tcg_gen_movi_tl(cpu_pc, dest);
> +        tcg_gen_goto_tb(n);
> +        tcg_gen_exit_tb((tcg_target_long)tb + n);
> +    } else {
> +        tcg_gen_movi_tl(cpu_pc, dest);
> +        if (dc->singlestep_enabled) {
> +            gen_exception(dc, EXCP_DEBUG);
> +        }
> +        tcg_gen_exit_tb(0);
> +    }
> +}
> +
> +static void gen_jump(DisasContext *dc, uint32_t imm, uint32_t reg, uint32_t op0)
> +{
> +    target_ulong tmp_pc;
> +    int lab = gen_new_label();
> +    TCGv sr_f = tcg_temp_new();
> +    /* N26, 26bits imm */
> +    tmp_pc = sign_extend((imm<<2), 26) + dc->pc;
> +    tcg_gen_andi_tl(sr_f, cpu_sr, SR_F);
> +
> +    if (op0 == 0x00) {    /* l.j */
> +        tcg_gen_movi_tl(jmp_pc, tmp_pc);
> +    } else if (op0 == 0x01) {    /* l.jal */
> +        tcg_gen_movi_tl(cpu_R[9], (dc->pc + 8));
> +        tcg_gen_movi_tl(jmp_pc, tmp_pc);
> +    } else if (op0 == 0x03) {    /* l.bnf */
> +        tcg_gen_movi_tl(jmp_pc, dc->pc+8);
> +        tcg_gen_brcondi_i32(TCG_COND_EQ, sr_f, SR_F, lab);
> +        tcg_gen_movi_tl(jmp_pc, tmp_pc);
> +        gen_set_label(lab);
> +    } else if (op0 == 0x04) {    /* l.bf */
> +        tcg_gen_movi_tl(jmp_pc, dc->pc+8);
> +        tcg_gen_brcondi_i32(TCG_COND_NE, sr_f, SR_F, lab);
> +        tcg_gen_movi_tl(jmp_pc, tmp_pc);
> +        gen_set_label(lab);
> +    } else if (op0 == 0x11) {    /* l.jr */
> +        tcg_gen_mov_tl(jmp_pc, cpu_R[reg]);
> +    } else if (op0 == 0x12) {    /* l.jalr */
> +        tcg_gen_movi_tl(cpu_R[9], (dc->pc + 8));
> +        tcg_gen_mov_tl(jmp_pc, cpu_R[reg]);
> +    } else {
> +        gen_illegal_exception(dc);
> +    }
> +
> +    tcg_temp_free(sr_f);
> +    dc->delayed_branch = 2;
> +    dc->tb_flags |= D_FLAG;
> +    gen_sync_flags(dc);
> +}
> +
> +static inline uint32_t field(uint32_t val, int start, int length)
> +{
> +    val >>= start;
> +    val &= ~(~0 << length);
> +    return val;
> +}
> +
> +static void dec_calc(DisasContext *dc, uint32_t insn)
> +{
> +    uint32_t op0, op1, op2;
> +    uint32_t ra, rb, rd;
> +    op0 = field(insn, 0, 4);
> +    op1 = field(insn, 8, 2);
> +    op2 = field(insn, 6, 2);
> +    ra = field(insn, 16, 5);
> +    rb = field(insn, 11, 5);
> +    rd = field(insn, 21, 5);
> +
> +    switch (op0) {
> +    case 0x0000:
> +        switch (op1) {
> +        case 0x00:    /* l.add */
> +            LOG_DIS("l.add r%d, r%d, r%d\n", rd, ra, rb);
> +            {
> +                int lab = gen_new_label();
> +                TCGv_i64 ta = tcg_temp_new_i64();
> +                TCGv_i64 tb = tcg_temp_new_i64();
> +                TCGv_i64 td = tcg_temp_local_new_i64();
> +                TCGv_i32 res = tcg_temp_local_new_i32();
> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
> +                tcg_gen_extu_i32_i64(ta, cpu_R[ra]);
> +                tcg_gen_extu_i32_i64(tb, cpu_R[rb]);
> +                tcg_gen_add_i64(td, ta, tb);
> +                tcg_gen_trunc_i64_i32(res, td);
> +                tcg_gen_shri_i64(td, td, 31);
> +                tcg_gen_andi_i64(td, td, 0x3);
> +                /* Jump to lab when no overflow.  */
> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab);
> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab);
> +                tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY));
> +                tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE);
> +                tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab);
> +                gen_exception(dc, EXCP_RANGE);
> +                gen_set_label(lab);
> +                tcg_gen_mov_i32(cpu_R[rd], res);
> +                tcg_temp_free_i64(ta);
> +                tcg_temp_free_i64(tb);
> +                tcg_temp_free_i64(td);
> +                tcg_temp_free_i32(res);
> +                tcg_temp_free_i32(sr_ove);
> +            }
> +            break;
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x0001:    /* l.addc */
> +        switch (op1) {
> +        case 0x00:
> +            LOG_DIS("l.addc r%d, r%d, r%d\n", rd, ra, rb);
> +            {
> +                int lab = gen_new_label();
> +                TCGv_i64 ta = tcg_temp_new_i64();
> +                TCGv_i64 tb = tcg_temp_new_i64();
> +                TCGv_i64 tcy = tcg_temp_local_new_i64();
> +                TCGv_i64 td = tcg_temp_local_new_i64();
> +                TCGv_i32 res = tcg_temp_local_new_i32();
> +                TCGv_i32 sr_cy = tcg_temp_local_new_i32();
> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
> +                tcg_gen_extu_i32_i64(ta, cpu_R[ra]);
> +                tcg_gen_extu_i32_i64(tb, cpu_R[rb]);
> +                tcg_gen_andi_i32(sr_cy, cpu_sr, SR_CY);
> +                tcg_gen_extu_i32_i64(tcy, sr_cy);
> +                tcg_gen_shri_i64(tcy, tcy, 10);
> +                tcg_gen_add_i64(td, ta, tb);
> +                tcg_gen_add_i64(td, td, tcy);
> +                tcg_gen_trunc_i64_i32(res, td);
> +                tcg_gen_shri_i64(td, td, 32);
> +                tcg_gen_andi_i64(td, td, 0x3);
> +                /* Jump to lab when no overflow.  */
> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab);
> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab);
> +                tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY));
> +                tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE);
> +                tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab);
> +                gen_exception(dc, EXCP_RANGE);
> +                gen_set_label(lab);
> +                tcg_gen_mov_i32(cpu_R[rd], res);
> +                tcg_temp_free_i64(ta);
> +                tcg_temp_free_i64(tb);
> +                tcg_temp_free_i64(tcy);
> +                tcg_temp_free_i64(td);
> +                tcg_temp_free_i32(res);
> +                tcg_temp_free_i32(sr_cy);
> +                tcg_temp_free_i32(sr_ove);
> +            }
> +            break;
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x0002:    /* l.sub */
> +        switch (op1) {
> +        case 0x00:
> +            LOG_DIS("l.sub r%d, r%d, r%d\n", rd, ra, rb);
> +            {
> +                int lab = gen_new_label();
> +                TCGv_i64 ta = tcg_temp_new_i64();
> +                TCGv_i64 tb = tcg_temp_new_i64();
> +                TCGv_i64 td = tcg_temp_local_new_i64();
> +                TCGv_i32 res = tcg_temp_local_new_i32();
> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
> +
> +                tcg_gen_extu_i32_i64(ta, cpu_R[ra]);
> +                tcg_gen_extu_i32_i64(tb, cpu_R[rb]);
> +                tcg_gen_sub_i64(td, ta, tb);
> +                tcg_gen_trunc_i64_i32(res, td);
> +                tcg_gen_shri_i64(td, td, 31);
> +                tcg_gen_andi_i64(td, td, 0x3);
> +                /* Jump to lab when no overflow.  */
> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab);
> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab);
> +                tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY));
> +                tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE);
> +                tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab);
> +                gen_exception(dc, EXCP_RANGE);
> +                gen_set_label(lab);
> +                tcg_gen_mov_i32(cpu_R[rd], res);
> +                tcg_temp_free_i64(ta);
> +                tcg_temp_free_i64(tb);
> +                tcg_temp_free_i64(td);
> +                tcg_temp_free_i32(res);
> +                tcg_temp_free_i32(sr_ove);
> +            }
> +            break;
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x0003:    /* l.and */
> +        switch (op1) {
> +        case 0x00:
> +            LOG_DIS("l.and r%d, r%d, r%d\n", rd, ra, rb);
> +            tcg_gen_and_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
> +            break;
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x0004:    /* l.or */
> +        switch (op1) {
> +        case 0x00:
> +            LOG_DIS("l.or r%d, r%d, r%d\n", rd, ra, rb);
> +            tcg_gen_or_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
> +            break;
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x0005:
> +        switch (op1) {
> +        case 0x00:    /* l.xor */
> +            LOG_DIS("l.xor r%d, r%d, r%d\n", rd, ra, rb);
> +            tcg_gen_xor_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
> +            break;
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x0006:
> +        switch (op1) {
> +        case 0x03:    /* l.mul */
> +            LOG_DIS("l.mul r%d, r%d, r%d\n", rd, ra, rb);
> +            if (ra != 0 && rb != 0) {
> +                gen_helper_mul32(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +            } else {
> +                tcg_gen_movi_tl(cpu_R[rd], 0x0);
> +            }
> +            break;
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x0009:
> +        switch (op1) {
> +        case 0x03:    /* l.div */
> +            LOG_DIS("l.div r%d, r%d, r%d\n", rd, ra, rb);
> +            {
> +                int lab0 = gen_new_label();
> +                int lab1 = gen_new_label();
> +                int lab2 = gen_new_label();
> +                int lab3 = gen_new_label();
> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
> +                if (rb == 0) {
> +                    tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY));
> +                    tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE);
> +                    tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab0);
> +                    gen_exception(dc, EXCP_RANGE);
> +                    gen_set_label(lab0);
> +                } else {
> +                    tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[rb],
> +                                       0x00000000, lab1);
> +                    tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[ra],
> +                                       0x80000000, lab2);
> +                    tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[rb],
> +                                       0xffffffff, lab2);
> +                    gen_set_label(lab1);
> +                    tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY));
> +                    tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE);
> +                    tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab3);
> +                    gen_exception(dc, EXCP_RANGE);
> +                    gen_set_label(lab2);
> +                    tcg_gen_div_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
> +                    gen_set_label(lab3);
> +                }
> +                tcg_temp_free_i32(sr_ove);
> +            }
> +            break;
> +
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x000a:
> +        switch (op1) {
> +        case 0x03:    /* l.divu */
> +            LOG_DIS("l.divu r%d, r%d, r%d\n", rd, ra, rb);
> +            {
> +                int lab0 = gen_new_label();
> +                int lab1 = gen_new_label();
> +                int lab2 = gen_new_label();
> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
> +                if (rb == 0) {
> +                    tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY));
> +                    tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE);
> +                    tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab0);
> +                    gen_exception(dc, EXCP_RANGE);
> +                    gen_set_label(lab0);
> +                } else {
> +                    tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[rb],
> +                                       0x00000000, lab1);
> +                    tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY));
> +                    tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE);
> +                    tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab2);
> +                    gen_exception(dc, EXCP_RANGE);
> +                    gen_set_label(lab1);
> +                    tcg_gen_divu_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
> +                    gen_set_label(lab2);
> +                }
> +                tcg_temp_free_i32(sr_ove);
> +            }
> +            break;
> +
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x000b:
> +        switch (op1) {
> +        case 0x03:    /* l.mulu */
> +            LOG_DIS("l.mulu r%d, r%d, r%d\n", rd, ra, rb);
> +            if (rb != 0 && ra != 0) {
> +                TCGv_i64 result = tcg_temp_local_new_i64();
> +                TCGv_i64 tra = tcg_temp_local_new_i64();
> +                TCGv_i64 trb = tcg_temp_local_new_i64();
> +                TCGv_i64 high = tcg_temp_new_i64();
> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
> +                int lab = gen_new_label();
> +                /* Calculate the each result.  */
> +                tcg_gen_extu_i32_i64(tra, cpu_R[ra]);
> +                tcg_gen_extu_i32_i64(trb, cpu_R[rb]);
> +                tcg_gen_mul_i64(result, tra, trb);
> +                tcg_temp_free_i64(tra);
> +                tcg_temp_free_i64(trb);
> +                tcg_gen_shri_i64(high, result, TARGET_LONG_BITS);
> +                /* Overflow or not.  */
> +                tcg_gen_brcondi_i64(TCG_COND_EQ, high, 0x00000000, lab);
> +                tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY));
> +                tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE);
> +                tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab);
> +                gen_exception(dc, EXCP_RANGE);
> +                gen_set_label(lab);
> +                tcg_temp_free_i64(high);
> +                tcg_gen_trunc_i64_tl(cpu_R[rd], result);
> +                tcg_temp_free_i64(result);
> +                tcg_temp_free_i32(sr_ove);
> +            } else {
> +                tcg_gen_movi_tl(cpu_R[rd], 0);
> +            }
> +            break;
> +
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x000e:
> +        switch (op1) {
> +        case 0x00:    /* l.cmov */
> +            LOG_DIS("l.cmov r%d, r%d, r%d\n", rd, ra, rb);
> +            {
> +                int lab = gen_new_label();
> +                TCGv res = tcg_temp_local_new();
> +                TCGv sr_f = tcg_temp_new();
> +                tcg_gen_andi_tl(sr_f, cpu_sr, SR_F);
> +                tcg_gen_mov_tl(res, cpu_R[rb]);
> +                tcg_gen_brcondi_tl(TCG_COND_NE, sr_f, SR_F, lab);
> +                tcg_gen_mov_tl(res, cpu_R[ra]);
> +                gen_set_label(lab);
> +                tcg_gen_mov_tl(cpu_R[rd], res);
> +                tcg_temp_free(sr_f);
> +                tcg_temp_free(res);
> +            }
> +            break;
> +
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x000f:
> +        switch (op1) {
> +        case 0x00:    /* l.ff1 */
> +            LOG_DIS("l.ff1 r%d, r%d, r%d\n", rd, ra, rb);
> +            gen_helper_ff1(cpu_R[rd], cpu_R[ra]);
> +            break;
> +        case 0x01:    /* l.fl1 */
> +            LOG_DIS("l.fl1 r%d, r%d, r%d\n", rd, ra, rb);
> +            gen_helper_fl1(cpu_R[rd], cpu_R[ra]);
> +            break;
> +
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x0008:
> +        switch (op1) {
> +        case 0x00:
> +            switch (op2) {
> +            case 0x00:    /* l.sll */
> +                LOG_DIS("l.sll r%d, r%d, r%d\n", rd, ra, rb);
> +                tcg_gen_shl_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
> +                break;
> +            case 0x01:    /* l.srl */
> +                LOG_DIS("l.srl r%d, r%d, r%d\n", rd, ra, rb);
> +                tcg_gen_shr_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
> +                break;
> +            case 0x02:    /* l.sra */
> +                LOG_DIS("l.sra r%d, r%d, r%d\n", rd, ra, rb);
> +                tcg_gen_sar_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
> +                break;
> +            case 0x03:    /* l.ror */
> +                LOG_DIS("l.ror r%d, r%d, r%d\n", rd, ra, rb);
> +                tcg_gen_rotr_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
> +                break;
> +
> +            default:
> +                gen_illegal_exception(dc);
> +                break;
> +            }
> +            break;
> +
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x000c:
> +        switch (op1) {
> +        case 0x00:
> +            switch (op2) {
> +            case 0x00:    /* l.exths */
> +                LOG_DIS("l.exths r%d, r%d\n", rd, ra);
> +                tcg_gen_ext16s_tl(cpu_R[rd], cpu_R[ra]);
> +                break;
> +            case 0x01:    /* l.extbs */
> +                LOG_DIS("l.extbs r%d, r%d\n", rd, ra);
> +                tcg_gen_ext8s_tl(cpu_R[rd], cpu_R[ra]);
> +                break;
> +            case 0x02:    /* l.exthz */
> +                LOG_DIS("l.exthz r%d, r%d\n", rd, ra);
> +                tcg_gen_ext16u_tl(cpu_R[rd], cpu_R[ra]);
> +                break;
> +            case 0x03:    /* l.extbz */
> +                LOG_DIS("l.extbz r%d, r%d\n", rd, ra);
> +                tcg_gen_ext8u_tl(cpu_R[rd], cpu_R[ra]);
> +                break;
> +
> +            default:
> +                gen_illegal_exception(dc);
> +                break;
> +            }
> +            break;
> +
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x000d:
> +        switch (op1) {
> +        case 0x00:
> +            switch (op2) {
> +            case 0x00:    /* l.extws */
> +                LOG_DIS("l.extws r%d, r%d\n", rd, ra);
> +                tcg_gen_ext32s_tl(cpu_R[rd], cpu_R[ra]);
> +                break;
> +            case 0x01:    /* l.extwz */
> +                LOG_DIS("l.extwz r%d, r%d\n", rd, ra);
> +                tcg_gen_ext32u_tl(cpu_R[rd], cpu_R[ra]);
> +                break;
> +
> +            default:
> +                gen_illegal_exception(dc);
> +                break;
> +            }
> +            break;
> +
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    default:
> +        gen_illegal_exception(dc);
> +        break;
> +    }
> +}
> +
> +static void dec_misc(DisasContext *dc, uint32_t insn)
> +{
> +    uint32_t op0, op1;
> +    uint32_t ra, rb, rd;
> +    uint32_t /*L6, K5, */I16, I5, I11, N26, tmp;
> +    op0 = field(insn, 26, 6);
> +    op1 = field(insn, 24, 2);
> +    ra = field(insn, 16, 5);
> +    rb = field(insn, 11, 5);
> +    rd = field(insn, 21, 5);
> +    /*L6 = field(insn, 5, 6);
> +    K5 = field(insn, 0, 5);*/
> +    I16 = field(insn, 0, 16);
> +    I5 = field(insn, 21, 5);
> +    I11 = field(insn, 0, 11);
> +    N26 = field(insn, 0, 26);
> +    tmp = (I5<<11) + I11;
> +
> +    switch (op0) {
> +    case 0x00:    /* l.j */
> +        LOG_DIS("l.j %d\n", N26);
> +    case 0x01:    /* l.jal */
> +        LOG_DIS("l.jal %d\n", N26);
> +    case 0x03:    /* l.bnf */
> +        LOG_DIS("l.bnf %d\n", N26);
> +    case 0x04:    /* l.bf */
> +        LOG_DIS("l.bf %d\n", N26);
> +
> +        gen_jump(dc, N26, 0, op0);

The cases 0x00 to 0x03 will fall through to this case, calling LOG_DIS
one to four times.

> +        break;
> +
> +    case 0x05:
> +        switch (op1) {
> +        case 0x01:    /* l.nop */
> +            LOG_DIS("l.nop %d\n", I16);
> +            break;
> +
> +        default:
> +            gen_illegal_exception(dc);
> +            break;
> +        }
> +        break;
> +
> +    case 0x11:    /* l.jr */
> +        LOG_DIS("l.jr r%d\n", rb);
> +    case 0x12:    /* l.jalr */
> +        LOG_DIS("l.jalr r%d\n", rb);
> +
> +        gen_jump(dc, 0, rb, op0);

Also here.

> +        break;
> +
> +    case 0x13:    /* l.maci */
> +        LOG_DIS("l.maci %d, r%d, %d\n", I5, ra, I11);
> +        {
> +            TCGv_i64 t1 = tcg_temp_new_i64();
> +            TCGv_i64 t2 = tcg_temp_new_i64();
> +            TCGv_i32 dst = tcg_temp_new_i32();
> +            TCGv ttmp = tcg_const_tl(tmp);
> +            tcg_gen_mul_tl(dst, cpu_R[ra], ttmp);
> +            tcg_gen_ext_i32_i64(t1, dst);
> +            tcg_gen_concat_i32_i64(t2, maclo, machi);
> +            tcg_gen_add_i64(t2, t2, t1);
> +            tcg_gen_trunc_i64_i32(maclo, t2);
> +            tcg_gen_shri_i64(t2, t2, 32);
> +            tcg_gen_trunc_i64_i32(machi, t2);
> +            tcg_temp_free_i32(dst);
> +            tcg_temp_free(ttmp);
> +            tcg_temp_free_i64(t1);
> +            tcg_temp_free_i64(t2);
> +        }
> +        break;
> +
> +    case 0x09:    /* l.rfe */
> +        LOG_DIS("l.rfe\n");
> +        {
> +            gen_helper_rfe(cpu_env);
> +            dc->is_jmp = DISAS_UPDATE;
> +        }
> +        break;
> +
> +    case 0x1c:    /* l.cust1 */
> +        LOG_DIS("l.cust1\n");
> +        break;
> +
> +    case 0x1d:    /* l.cust2 */
> +        LOG_DIS("l.cust2\n");
> +        break;
> +
> +    case 0x1e:    /* l.cust3 */
> +        LOG_DIS("l.cust3\n");
> +        break;
> +
> +    case 0x1f:    /* l.cust4 */
> +        LOG_DIS("l.cust4\n");
> +        break;
> +
> +    case 0x3c:    /* l.cust5 */
> +        /*LOG_DIS("l.cust5 r%d, r%d, r%d, %d, %d\n", rd, ra, rb, L6, K5);*/
> +        break;
> +
> +    case 0x3d:    /* l.cust6 */
> +        LOG_DIS("l.cust6\n");
> +        break;
> +
> +    case 0x3e:    /* l.cust7 */
> +        LOG_DIS("l.cust7\n");
> +        break;
> +
> +    case 0x3f:    /* l.cust8 */
> +        LOG_DIS("l.cust8\n");
> +        break;
> +
> +    case 0x20:    /* l.ld */
> +        LOG_DIS("l.ld r%d, r%d, %d\n", rd, ra, I16);
> +        {
> +#ifdef TARGET_OPENRISC64
> +            check_ob64s(dc);
> +            TCGv_i64 t0 = tcg_temp_new_i64();
> +            tcg_gen_addi_i64(t0, cpu_R[ra], sign_extend(I16, 16));
> +            tcg_gen_qemu_ld64(cpu_R[rd], t0, dc->mem_idx);
> +            tcg_temp_free_i64(t0);
> +#endif
> +        }
> +        break;
> +
> +    case 0x21:    /* l.lwz */
> +        LOG_DIS("l.lwz r%d, r%d, %d\n", rd, ra, I16);
> +        {
> +            TCGv t0 = tcg_temp_new();
> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
> +            tcg_gen_qemu_ld32u(cpu_R[rd], t0, dc->mem_idx);
> +            tcg_temp_free(t0);
> +        }
> +        break;
> +
> +    case 0x22:    /* l.lws */
> +        LOG_DIS("l.lws r%d, r%d, %d\n", rd, ra, I16);
> +        {
> +            TCGv t0 = tcg_temp_new();
> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
> +            tcg_gen_qemu_ld32s(cpu_R[rd], t0, dc->mem_idx);
> +            tcg_temp_free(t0);
> +        }
> +        break;
> +
> +    case 0x23:    /* l.lbz */
> +        LOG_DIS("l.lbz r%d, r%d, %d\n", rd, ra, I16);
> +        {
> +            TCGv t0 = tcg_temp_new();
> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
> +            tcg_gen_qemu_ld8u(cpu_R[rd], t0, dc->mem_idx);
> +            tcg_temp_free(t0);
> +        }
> +        break;
> +
> +    case 0x24:    /* l.lbs */
> +        LOG_DIS("l.lbs r%d, r%d, %d\n", rd, ra, I16);
> +        {
> +            TCGv t0 = tcg_temp_new();
> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
> +            tcg_gen_qemu_ld8s(cpu_R[rd], t0, dc->mem_idx);
> +            tcg_temp_free(t0);
> +        }
> +        break;
> +
> +    case 0x25:    /* l.lhz */
> +        LOG_DIS("l.lhz r%d, r%d, %d\n", rd, ra, I16);
> +        {
> +            TCGv t0 = tcg_temp_new();
> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
> +            tcg_gen_qemu_ld16u(cpu_R[rd], t0, dc->mem_idx);
> +            tcg_temp_free(t0);
> +        }
> +        break;
> +
> +    case 0x26:    /* l.lhs */
> +        LOG_DIS("l.lhs r%d, r%d, %d\n", rd, ra, I16);
> +        {
> +            TCGv t0 = tcg_temp_new();
> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
> +            tcg_gen_qemu_ld16s(cpu_R[rd], t0, dc->mem_idx);
> +            tcg_temp_free(t0);
> +        }
> +        break;
> +
> +    case 0x27:    /* l.addi */
> +        LOG_DIS("l.addi r%d, r%d, %d\n", rd, ra, I16);
> +        {
> +            int lab = gen_new_label();
> +            TCGv_i64 ta = tcg_temp_new_i64();
> +            TCGv_i64 td = tcg_temp_local_new_i64();
> +            TCGv_i32 res = tcg_temp_local_new_i32();
> +            TCGv_i32 sr_ove = tcg_temp_local_new_i32();
> +            tcg_gen_extu_i32_i64(ta, cpu_R[ra]);
> +            tcg_gen_addi_i64(td, ta, sign_extend(I16, 16));
> +            tcg_gen_trunc_i64_i32(res, td);
> +            tcg_gen_shri_i64(td, td, 32);
> +            tcg_gen_andi_i64(td, td, 0x3);
> +            /* Jump to lab when no overflow.  */
> +            tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab);
> +            tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab);
> +            tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY));
> +            tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE);
> +            tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab);
> +            gen_exception(dc, EXCP_RANGE);
> +            gen_set_label(lab);
> +            tcg_gen_mov_i32(cpu_R[rd], res);
> +            tcg_temp_free_i64(ta);
> +            tcg_temp_free_i64(td);
> +            tcg_temp_free_i32(res);
> +            tcg_temp_free_i32(sr_ove);
> +        }
> +        break;
> +
> +    case 0x28:    /* l.addic */
> +        LOG_DIS("l.addic r%d, r%d, %d\n", rd, ra, I16);
> +        {
> +            int lab = gen_new_label();
> +            TCGv_i64 ta = tcg_temp_new_i64();
> +            TCGv_i64 td = tcg_temp_local_new_i64();
> +            TCGv_i64 tcy = tcg_temp_local_new_i64();
> +            TCGv_i32 res = tcg_temp_local_new_i32();
> +            TCGv_i32 sr_cy = tcg_temp_local_new_i32();
> +            TCGv_i32 sr_ove = tcg_temp_local_new_i32();
> +            tcg_gen_extu_i32_i64(ta, cpu_R[ra]);
> +            tcg_gen_andi_i32(sr_cy, cpu_sr, SR_CY);
> +            tcg_gen_shri_i32(sr_cy, sr_cy, 10);
> +            tcg_gen_extu_i32_i64(tcy, sr_cy);
> +            tcg_gen_addi_i64(td, ta, sign_extend(I16, 16));
> +            tcg_gen_add_i64(td, td, tcy);
> +            tcg_gen_trunc_i64_i32(res, td);
> +            tcg_gen_shri_i64(td, td, 32);
> +            tcg_gen_andi_i64(td, td, 0x3);
> +            /* Jump to lab when no overflow.  */
> +            tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab);
> +            tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab);
> +            tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY));
> +            tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE);
> +            tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab);
> +            gen_exception(dc, EXCP_RANGE);
> +            gen_set_label(lab);
> +            tcg_gen_mov_i32(cpu_R[rd], res);
> +            tcg_temp_free_i64(ta);
> +            tcg_temp_free_i64(td);
> +            tcg_temp_free_i64(tcy);
> +            tcg_temp_free_i32(res);
> +            tcg_temp_free_i32(sr_cy);
> +            tcg_temp_free_i32(sr_ove);
> +        }
> +        break;
> +
> +    case 0x29:    /* l.andi */
> +        LOG_DIS("l.andi r%d, r%d, %d\n", rd, ra, I16);
> +        tcg_gen_andi_tl(cpu_R[rd], cpu_R[ra], zero_extend(I16, 16));
> +        break;
> +
> +    case 0x2a:    /* l.ori */
> +        LOG_DIS("l.ori r%d, r%d, %d\n", rd, ra, I16);
> +        tcg_gen_ori_tl(cpu_R[rd], cpu_R[ra], zero_extend(I16, 16));
> +        break;
> +
> +    case 0x2b:    /* l.xori */
> +        LOG_DIS("l.xori r%d, r%d, %d\n", rd, ra, I16);
> +        tcg_gen_xori_tl(cpu_R[rd], cpu_R[ra], sign_extend(I16, 16));
> +        break;
> +
> +    case 0x2c:    /* l.muli */
> +        LOG_DIS("l.muli r%d, r%d, %d\n", rd, ra, I16);
> +        if (ra != 0 && I16 != 0) {
> +            TCGv_i32 im = tcg_const_i32(I16);
> +            gen_helper_mul32(cpu_R[rd], cpu_env, cpu_R[ra], im);
> +            tcg_temp_free_i32(im);
> +        } else {
> +            tcg_gen_movi_tl(cpu_R[rd], 0x0);
> +        }
> +        break;
> +
> +    case 0x2d:    /* l.mfspr */
> +        LOG_DIS("l.mfspr r%d, r%d, %d\n", rd, ra, I16);
> +        break;
> +
> +    case 0x30:    /* l.mtspr */
> +        LOG_DIS("l.mtspr %d, r%d, r%d, %d\n", I5, ra, rb, I11);
> +        break;
> +
> +    case 0x34:    /* l.sd */
> +        LOG_DIS("l.sd %d, r%d, r%d, %d\n", I5, ra, rb, I11);
> +        {
> +#ifdef TARGET_OPENRISC64
> +            check_ob64s(dc);
> +            TCGv_i64 t0 = tcg_temp_new_i64();
> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(tmp, 16));
> +            tcg_gen_qemu_st64(cpu_R[rb], t0, dc->mem_idx);
> +            tcg_temp_free_i64(t0);
> +#endif
> +        }
> +        break;
> +
> +    case 0x35:    /* l.sw */
> +        LOG_DIS("l.sw %d, r%d, r%d, %d\n", I5, ra, rb, I11);
> +        {
> +            TCGv t0 = tcg_temp_new();
> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(tmp, 16));
> +            tcg_gen_qemu_st32(cpu_R[rb], t0, dc->mem_idx);
> +            tcg_temp_free(t0);
> +        }
> +        break;
> +
> +    case 0x36:    /* l.sb */
> +        LOG_DIS("l.sb %d, r%d, r%d, %d\n", I5, ra, rb, I11);
> +        {
> +            TCGv t0 = tcg_temp_new();
> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(tmp, 16));
> +            tcg_gen_qemu_st8(cpu_R[rb], t0, dc->mem_idx);
> +            tcg_temp_free(t0);
> +        }
> +        break;
> +
> +    case 0x37:    /* l.sh */
> +        LOG_DIS("l.sh %d, r%d, r%d, %d\n", I5, ra, rb, I11);
> +        {
> +            TCGv t0 = tcg_temp_new();
> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(tmp, 16));
> +            tcg_gen_qemu_st16(cpu_R[rb], t0, dc->mem_idx);
> +            tcg_temp_free(t0);
> +        }
> +        break;
> +
> +    default:
> +        gen_illegal_exception(dc);
> +        break;
> +    }
> +}
> +
> +static void dec_mac(DisasContext *dc, uint32_t insn)
> +{
> +    uint32_t op0;
> +    uint32_t ra, rb;
> +    op0 = field(insn, 0, 4);
> +    ra = field(insn, 16, 5);
> +    rb = field(insn, 11, 5);
> +
> +    switch (op0) {
> +    case 0x0001:    /* l.mac */
> +        LOG_DIS("l.mac r%d, r%d\n", ra, rb);
> +        {
> +            TCGv_i32 t0 = tcg_temp_new_i32();
> +            TCGv_i64 t1 = tcg_temp_new_i64();
> +            TCGv_i64 t2 = tcg_temp_new_i64();
> +            tcg_gen_mul_tl(t0, cpu_R[ra], cpu_R[rb]);
> +            tcg_gen_ext_i32_i64(t1, t0);
> +            tcg_gen_concat_i32_i64(t2, maclo, machi);
> +            tcg_gen_add_i64(t2, t2, t1);
> +            tcg_gen_trunc_i64_i32(maclo, t2);
> +            tcg_gen_shri_i64(t2, t2, 32);
> +            tcg_gen_trunc_i64_i32(machi, t2);
> +            tcg_temp_free_i32(t0);
> +            tcg_temp_free_i64(t1);
> +            tcg_temp_free_i64(t2);
> +        }
> +        break;
> +
> +    case 0x0002:    /* l.msb */
> +        LOG_DIS("l.msb r%d, r%d\n", ra, rb);
> +        {
> +            TCGv_i32 t0 = tcg_temp_new_i32();
> +            TCGv_i64 t1 = tcg_temp_new_i64();
> +            TCGv_i64 t2 = tcg_temp_new_i64();
> +            tcg_gen_mul_tl(t0, cpu_R[ra], cpu_R[rb]);
> +            tcg_gen_ext_i32_i64(t1, t0);
> +            tcg_gen_concat_i32_i64(t2, maclo, machi);
> +            tcg_gen_sub_i64(t2, t2, t1);
> +            tcg_gen_trunc_i64_i32(maclo, t2);
> +            tcg_gen_shri_i64(t2, t2, 32);
> +            tcg_gen_trunc_i64_i32(machi, t2);
> +            tcg_temp_free_i32(t0);
> +            tcg_temp_free_i64(t1);
> +            tcg_temp_free_i64(t2);
> +        }
> +        break;
> +
> +    default:
> +        gen_illegal_exception(dc);
> +        break;
> +   }
> +}
> +
> +static void dec_logic(DisasContext *dc, uint32_t insn)
> +{
> +    uint32_t op0;
> +    uint32_t rd, ra, L6;
> +    op0 = field(insn, 6, 2);
> +    rd = field(insn, 21, 5);
> +    ra = field(insn, 16, 5);
> +    L6 = field(insn, 0, 6);
> +
> +    switch (op0) {
> +    case 0x00:    /* l.slli */
> +        LOG_DIS("l.slli r%d, r%d, %d\n", rd, ra, L6);
> +        tcg_gen_shli_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f));
> +        break;
> +
> +    case 0x01:    /* l.srli */
> +        LOG_DIS("l.srli r%d, r%d, %d\n", rd, ra, L6);
> +        tcg_gen_shri_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f));
> +        break;
> +
> +    case 0x02:    /* l.srai */
> +        LOG_DIS("l.srai r%d, r%d, %d\n", rd, ra, L6);
> +        tcg_gen_sari_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f)); break;
> +
> +    case 0x03:    /* l.rori */
> +        LOG_DIS("l.rori r%d, r%d, %d\n", rd, ra, L6);
> +        tcg_gen_rotri_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f));
> +        break;
> +
> +    default:
> +        gen_illegal_exception(dc);
> +        break;
> +    }
> +}
> +
> +static void dec_M(DisasContext *dc, uint32_t insn)
> +{
> +    uint32_t op0;
> +    uint32_t rd;
> +    uint32_t K16;
> +    op0 = field(insn, 16, 1);
> +    rd = field(insn, 21, 5);
> +    K16 = field(insn, 0, 16);
> +
> +    switch (op0) {
> +    case 0x0:    /* l.movhi */
> +        LOG_DIS("l.movhi  r%d, %d\n", rd, K16);
> +        tcg_gen_movi_tl(cpu_R[rd], (K16 << 16));
> +        break;
> +
> +    case 0x1:    /* l.macrc */
> +        LOG_DIS("l.macrc  r%d\n", rd);
> +        tcg_gen_mov_tl(cpu_R[rd], maclo);
> +        tcg_gen_movi_tl(maclo, 0x0);
> +        tcg_gen_movi_tl(machi, 0x0);
> +        break;
> +
> +    default:
> +        gen_illegal_exception(dc);
> +        break;
> +    }
> +}
> +
> +static void dec_comp(DisasContext *dc, uint32_t insn)
> +{
> +    uint32_t op0;
> +    uint32_t ra, rb;
> +
> +    op0 = field(insn, 21, 5);
> +    ra = field(insn, 16, 5);
> +    rb = field(insn, 11, 5);
> +
> +    tcg_gen_movi_i32(env_btaken, 0x0);
> +    /* unsigned integers  */
> +    tcg_gen_ext32u_tl(cpu_R[ra], cpu_R[ra]);
> +    tcg_gen_ext32u_tl(cpu_R[rb], cpu_R[rb]);
> +
> +    switch (op0) {
> +    case 0x0:    /* l.sfeq */
> +        LOG_DIS("l.sfeq  r%d, r%d\n", ra, rb);
> +        tcg_gen_setcond_tl(TCG_COND_EQ, env_btaken, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x1:    /* l.sfne */
> +        LOG_DIS("l.sfne  r%d, r%d\n", ra, rb);
> +        tcg_gen_setcond_tl(TCG_COND_NE, env_btaken, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x2:    /* l.sfgtu */
> +        LOG_DIS("l.sfgtu  r%d, r%d\n", ra, rb);
> +        tcg_gen_setcond_tl(TCG_COND_GTU, env_btaken, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x3:    /* l.sfgeu */
> +        LOG_DIS("l.sfgeu  r%d, r%d\n", ra, rb);
> +        tcg_gen_setcond_tl(TCG_COND_GEU, env_btaken, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x4:    /* l.sfltu */
> +        LOG_DIS("l.sfltu  r%d, r%d\n", ra, rb);
> +        tcg_gen_setcond_tl(TCG_COND_LTU, env_btaken, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x5:    /* l.sfleu */
> +        LOG_DIS("l.sfleu  r%d, r%d\n", ra, rb);
> +        tcg_gen_setcond_tl(TCG_COND_LEU, env_btaken, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0xa:    /* l.sfgts */
> +        LOG_DIS("l.sfgts  r%d, r%d\n", ra, rb);
> +        tcg_gen_setcond_tl(TCG_COND_GT, env_btaken, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0xb:    /* l.sfges */
> +        LOG_DIS("l.sfges  r%d, r%d\n", ra, rb);
> +        tcg_gen_setcond_tl(TCG_COND_GE, env_btaken, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0xc:    /* l.sflts */
> +        LOG_DIS("l.sflts  r%d, r%d\n", ra, rb);
> +        tcg_gen_setcond_tl(TCG_COND_LT, env_btaken, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0xd:    /* l.sfles */
> +        LOG_DIS("l.sfles  r%d, r%d\n", ra, rb);
> +        tcg_gen_setcond_tl(TCG_COND_LE, env_btaken, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    default:
> +        gen_illegal_exception(dc);
> +        break;
> +    }
> +    wb_SR_F();
> +}
> +
> +static void dec_compi(DisasContext *dc, uint32_t insn)
> +{
> +    uint32_t op0;
> +    uint32_t ra, I16;
> +
> +    op0 = field(insn, 21, 5);
> +    ra = field(insn, 16, 5);
> +    I16 = field(insn, 0, 16);
> +
> +    tcg_gen_movi_i32(env_btaken, 0x0);
> +    I16 = sign_extend(I16, 16);
> +
> +    switch (op0) {
> +    case 0x0:    /* l.sfeqi */
> +        LOG_DIS("l.sfeqi  r%d, %d\n", ra, I16);
> +        tcg_gen_setcondi_tl(TCG_COND_EQ, env_btaken, cpu_R[ra], I16);
> +        break;
> +
> +    case 0x1:    /* l.sfnei */
> +        LOG_DIS("l.sfnei  r%d, %d\n", ra, I16);
> +        tcg_gen_setcondi_tl(TCG_COND_NE, env_btaken, cpu_R[ra], I16);
> +        break;
> +
> +    case 0x2:    /* l.sfgtui */
> +        LOG_DIS("l.sfgtui  r%d, %d\n", ra, I16);
> +        tcg_gen_setcondi_tl(TCG_COND_GTU, env_btaken, cpu_R[ra], I16);
> +        break;
> +
> +    case 0x3:    /* l.sfgeui */
> +        LOG_DIS("l.sfgeui  r%d, %d\n", ra, I16);
> +        tcg_gen_setcondi_tl(TCG_COND_GEU, env_btaken, cpu_R[ra], I16);
> +        break;
> +
> +    case 0x4:    /* l.sfltui */
> +        LOG_DIS("l.sfltui  r%d, %d\n", ra, I16);
> +        tcg_gen_setcondi_tl(TCG_COND_LTU, env_btaken, cpu_R[ra], I16);
> +        break;
> +
> +    case 0x5:    /* l.sfleui */
> +        LOG_DIS("l.sfleui  r%d, %d\n", ra, I16);
> +        tcg_gen_setcondi_tl(TCG_COND_LEU, env_btaken, cpu_R[ra], I16);
> +        break;
> +
> +    case 0xa:    /* l.sfgtsi */
> +        LOG_DIS("l.sfgtsi  r%d, %d\n", ra, I16);
> +        tcg_gen_setcondi_tl(TCG_COND_GT, env_btaken, cpu_R[ra], I16);
> +        break;
> +
> +    case 0xb:    /* l.sfgesi */
> +        LOG_DIS("l.sfgesi  r%d, %d\n", ra, I16);
> +        tcg_gen_setcondi_tl(TCG_COND_GE, env_btaken, cpu_R[ra], I16);
> +        break;
> +
> +    case 0xc:    /* l.sfltsi */
> +        LOG_DIS("l.sfltsi  r%d, %d\n", ra, I16);
> +        tcg_gen_setcondi_tl(TCG_COND_LT, env_btaken, cpu_R[ra], I16);
> +        break;
> +
> +    case 0xd:    /* l.sflesi */
> +        LOG_DIS("l.sflesi  r%d, %d\n", ra, I16);
> +        tcg_gen_setcondi_tl(TCG_COND_LE, env_btaken, cpu_R[ra], I16);
> +        break;
> +
> +    default:
> +        gen_illegal_exception(dc);
> +        break;
> +    }
> +    wb_SR_F();
> +}
> +
> +static void dec_sys(DisasContext *dc, uint32_t insn)
> +{
> +    uint32_t op0;
> +    /*uint32_t K16;*/
> +    op0 = field(insn, 16, 8);
> +    /*K16 = field(insn, 0, 16);*/
> +
> +    switch (op0) {
> +    case 0x000:    /* l.sys */
> +        /*LOG_DIS("l.sys %d\n", K16);*/

Why commented out?

> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
> +        gen_exception(dc, EXCP_SYSCALL);
> +        dc->is_jmp = DISAS_UPDATE;
> +        break;
> +
> +    case 0x100:    /* l.trap */
> +        /*LOG_DIS("l.trap %d\n", K16);*/

Ditto

> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
> +        gen_exception(dc, EXCP_TRAP);
> +        break;
> +
> +    case 0x300:    /* l.csync */
> +        LOG_DIS("l.csync\n");
> +        break;
> +
> +    case 0x200:    /* l.msync */
> +        LOG_DIS("l.msync\n");
> +        break;
> +
> +    case 0x270:    /* l.psync */
> +        LOG_DIS("l.psync\n");
> +        break;
> +
> +    default:
> +        gen_illegal_exception(dc);
> +        break;
> +    }
> +}
> +
> +static void dec_float(DisasContext *dc, uint32_t insn)
> +{
> +    uint32_t op0;
> +    uint32_t ra, rb, rd;
> +    op0 = field(insn, 0, 8);
> +    ra = field(insn, 16, 5);
> +    rb = field(insn, 11, 5);
> +    rd = field(insn, 21, 5);
> +
> +    switch (op0) {
> +    case 0x00:    /* lf.add.s */
> +        LOG_DIS("lf.add.s r%d, r%d, r%d\n", rd, ra, rb);
> +        gen_helper_float_add_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x01:    /* lf.sub.s */
> +        LOG_DIS("lf.sub.s r%d, r%d, r%d\n", rd, ra, rb);
> +        gen_helper_float_sub_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +
> +    case 0x02:    /* lf.mul.s */
> +        LOG_DIS("lf.mul.s r%d, r%d, r%d\n", rd, ra, rb);
> +        if (ra != 0 && rb != 0) {
> +            gen_helper_float_mul_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        } else {
> +            tcg_gen_ori_tl(fpcsr, fpcsr, FPCSR_ZF);
> +            tcg_gen_movi_i32(cpu_R[rd], 0x0);
> +        }
> +        break;
> +
> +    case 0x03:    /* lf.div.s */
> +        LOG_DIS("lf.div.s r%d, r%d, r%d\n", rd, ra, rb);
> +        gen_helper_float_div_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x04:    /* lf.itof.s */
> +        LOG_DIS("lf.itof r%d, r%d\n", rd, ra);
> +        gen_helper_itofs(cpu_R[rd], cpu_env, cpu_R[ra]);
> +        break;
> +
> +    case 0x05:    /* lf.ftoi.s */
> +        LOG_DIS("lf.ftoi r%d, r%d\n", rd, ra);
> +        gen_helper_ftois(cpu_R[rd], cpu_env, cpu_R[ra]);
> +        break;
> +
> +    case 0x06:    /* lf.rem.s */
> +        LOG_DIS("lf.rem.s r%d, r%d, r%d\n", rd, ra, rb);
> +        gen_helper_float_rem_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x07:    /* lf.madd.s */
> +        LOG_DIS("lf.madd.s r%d, r%d, r%d\n", rd, ra, rb);
> +        gen_helper_float_muladd_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x08:    /* lf.sfeq.s */
> +        LOG_DIS("lf.sfeq.s r%d, r%d\n", ra, rb);
> +        gen_helper_float_eq_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x09:    /* lf.sfne.s */
> +        LOG_DIS("lf.sfne.s r%d, r%d\n", ra, rb);
> +        gen_helper_float_ne_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x0a:    /* lf.sfgt.s */
> +        LOG_DIS("lf.sfgt.s r%d, r%d\n", ra, rb);
> +        gen_helper_float_gt_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x0b:    /* lf.sfge.s */
> +        LOG_DIS("lf.sfge.s r%d, r%d\n", ra, rb);
> +        gen_helper_float_ge_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x0c:    /* lf.sflt.s */
> +        LOG_DIS("lf.sflt.s r%d, r%d\n", ra, rb);
> +        gen_helper_float_lt_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x0d:    /* lf.sfle.s */
> +        LOG_DIS("lf.sfle.s r%d, r%d\n", ra, rb);
> +        gen_helper_float_le_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +#ifdef TARGET_OPENRISC64
> +    case 0x10:    /* lf.add.d */
> +        LOG_DIS("lf.add.d r%d, r%d, r%d\n", rd, ra, rb);
> +        check_of64s(dc);
> +        gen_helper_float_add_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x11:    /* lf.sub.d */
> +        LOG_DIS("lf.sub.d r%d, r%d, r%d\n", rd, ra, rb);
> +        check_of64s(dc);
> +        gen_helper_float_sub_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x12:    /* lf.mul.d */
> +        LOG_DIS("lf.mul.d r%d, r%d, r%d\n", rd, ra, rb);
> +        check_of64s(dc);
> +        if (ra != 0 && rb != 0) {
> +            gen_helper_float_mul_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        } else {
> +            tcg_gen_ori_tl(fpcsr, fpcsr, FPCSR_ZF);
> +            tcg_gen_movi_i64(cpu_R[rd], 0x0);
> +        }
> +        break;
> +
> +    case 0x13:    /* lf.div.d */
> +        LOG_DIS("lf.div.d r%d, r%d, r%d\n", rd, ra, rb);
> +        check_of64s(dc);
> +        gen_helper_float_div_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x14:    /* lf.itof.d */
> +        LOG_DIS("lf.itof r%d, r%d\n", rd, ra);
> +        check_of64s(dc);
> +        gen_helper_itofd(cpu_R[rd], cpu_env, cpu_R[ra]);
> +        break;
> +
> +    case 0x15:    /* lf.ftoi.d */
> +        LOG_DIS("lf.ftoi r%d, r%d\n", rd, ra);
> +        check_of64s(dc);
> +        gen_helper_ftoid(cpu_R[rd], cpu_env, cpu_R[ra]);
> +        break;
> +
> +    case 0x16:    /* lf.rem.d */
> +        LOG_DIS("lf.rem.d r%d, r%d, r%d\n", rd, ra, rb);
> +        check_of64s(dc);
> +        gen_helper_float_rem_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x17:    /* lf.madd.d */
> +        LOG_DIS("lf.madd.d r%d, r%d, r%d\n", rd, ra, rb);
> +        check_of64s(dc);
> +        gen_helper_float_muladd_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x18:    /* lf.sfeq.d */
> +        LOG_DIS("lf.sfeq.d r%d, r%d\n", ra, rb);
> +        check_of64s(dc);
> +        gen_helper_float_eq_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x1a:    /* lf.sfgt.d */
> +        LOG_DIS("lf.sfgt.d r%d, r%d\n", ra, rb);
> +        check_of64s(dc);
> +        gen_helper_float_gt_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x1b:    /* lf.sfge.d */
> +        LOG_DIS("lf.sfge.d r%d, r%d\n", ra, rb);
> +        check_of64s(dc);
> +        gen_helper_float_ge_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x19:    /* lf.sfne.d */
> +        LOG_DIS("lf.sfne.d r%d, r%d\n", ra, rb);
> +        check_of64s(dc);
> +        gen_helper_float_ne_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x1c:    /* lf.sflt.d */
> +        LOG_DIS("lf.sflt.d r%d, r%d\n", ra, rb);
> +        check_of64s(dc);
> +        gen_helper_float_lt_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +
> +    case 0x1d:    /* lf.sfle.d */
> +        LOG_DIS("lf.sfle.d r%d, r%d\n", ra, rb);
> +        check_of64s(dc);
> +        gen_helper_float_le_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
> +        break;
> +#endif
> +
> +    default:
> +        gen_illegal_exception(dc);
> +        break;
> +    }
> +    wb_SR_F();
> +}
> +
> +static void disas_openrisc_insn(DisasContext *dc, OpenRISCCPU *cpu)
> +{
> +    uint32_t op0;
> +    uint32_t insn;
> +    insn = cpu_ldl_code(&cpu->env, dc->pc);
> +    op0 = field(insn, 26, 6);
> +
> +    switch (op0) {
> +    case 0x06:
> +        dec_M(dc, insn);
> +        break;
> +
> +    case 0x08:
> +        dec_sys(dc, insn);
> +        break;
> +
> +    case 0x2e:
> +        dec_logic(dc, insn);
> +        break;
> +
> +    case 0x2f:
> +        dec_compi(dc, insn);
> +        break;
> +
> +    case 0x31:
> +        dec_mac(dc, insn);
> +        break;
> +
> +    case 0x32:
> +        dec_float(dc, insn);
> +        break;
> +
> +    case 0x38:
> +        dec_calc(dc, insn);
> +        break;
> +
> +    case 0x39:
> +        dec_comp(dc, insn);
> +        break;
> +
> +    default:
> +        dec_misc(dc, insn);
> +        break;
> +    }
> +}
> +
> +static void check_breakpoint(OpenRISCCPU *cpu, DisasContext *dc)
> +{
> +    CPUBreakpoint *bp;
> +
> +    if (unlikely(!QTAILQ_EMPTY(&cpu->env.breakpoints))) {
> +        QTAILQ_FOREACH(bp, &cpu->env.breakpoints, entry) {
> +            if (bp->pc == dc->pc) {
> +                tcg_gen_movi_tl(cpu_pc, dc->pc);
> +                gen_exception(dc, EXCP_DEBUG);
> +                dc->is_jmp = DISAS_UPDATE;
> +            }
> +        }
> +    }
>  }
>
>  static inline void gen_intermediate_code_internal(OpenRISCCPU *cpu,
>                                                    TranslationBlock *tb,
>                                                    int search_pc)
>  {
> +    struct DisasContext ctx, *dc = &ctx;
> +    uint16_t *gen_opc_end;
> +    uint32_t pc_start;
> +    int j, k;
> +    uint32_t next_page_start;
> +    int num_insns;
> +    int max_insns;
> +
> +    qemu_log_try_set_file(stderr);
> +
> +    pc_start = tb->pc;
> +    dc->tb = tb;
> +
> +    gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
> +    dc->is_jmp = DISAS_NEXT;
> +    dc->ppc = pc_start;
> +    dc->pc = pc_start;
> +    dc->flags = cpu->env.cpucfgr;
> +    dc->mem_idx = cpu_mmu_index(&cpu->env);
> +    dc->synced_flags = dc->tb_flags = tb->flags;
> +    dc->delayed_branch = !!(dc->tb_flags & D_FLAG);
> +    dc->singlestep_enabled = cpu->env.singlestep_enabled;
> +    if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
> +        qemu_log("-----------------------------------------\n");
> +        log_cpu_state(&cpu->env, 0);
> +    }
> +
> +    next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
> +    k = -1;
> +    num_insns = 0;
> +    max_insns = tb->cflags & CF_COUNT_MASK;
> +
> +    if (max_insns == 0) {
> +        max_insns = CF_COUNT_MASK;
> +    }
> +
> +    gen_icount_start();
> +
> +    do {
> +        check_breakpoint(cpu, dc);
> +        if (search_pc) {
> +            j = gen_opc_ptr - gen_opc_buf;
> +            if (k < j) {
> +                k++;
> +                while (k < j) {
> +                    gen_opc_instr_start[k++] = 0;
> +                }
> +            }
> +            gen_opc_pc[k] = dc->pc;
> +            gen_opc_instr_start[k] = 1;
> +            gen_opc_icount[k] = num_insns;
> +        }
> +
> +        if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP))) {
> +            tcg_gen_debug_insn_start(dc->pc);
> +        }
> +
> +        if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
> +            gen_io_start();
> +        }
> +        dc->ppc = dc->pc - 4;
> +        dc->npc = dc->pc + 4;
> +        tcg_gen_movi_tl(cpu_ppc, dc->ppc);
> +        tcg_gen_movi_tl(cpu_npc, dc->npc);
> +        disas_openrisc_insn(dc, cpu);
> +        dc->pc = dc->npc;
> +        num_insns++;
> +        /* delay slot */
> +        if (dc->delayed_branch) {
> +            dc->delayed_branch--;
> +            if (!dc->delayed_branch) {
> +                dc->tb_flags &= ~D_FLAG;
> +                gen_sync_flags(dc);
> +                tcg_gen_mov_tl(cpu_pc, jmp_pc);
> +                tcg_gen_mov_tl(cpu_npc, jmp_pc);
> +                tcg_gen_movi_tl(jmp_pc, 0);
> +                tcg_gen_exit_tb(0);
> +                dc->is_jmp = DISAS_JUMP;
> +                break;
> +            }
> +        }
> +    } while (!dc->is_jmp
> +             && gen_opc_ptr < gen_opc_end
> +             && !cpu->env.singlestep_enabled
> +             && !singlestep
> +             && (dc->pc < next_page_start)
> +             && num_insns < max_insns);
> +
> +    if (tb->cflags & CF_LAST_IO) {
> +        gen_io_end();
> +    }
> +    if (dc->is_jmp == DISAS_NEXT) {
> +        dc->is_jmp = DISAS_UPDATE;
> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
> +    }
> +    if (unlikely(cpu->env.singlestep_enabled)) {
> +        if (dc->is_jmp == DISAS_NEXT) {
> +            tcg_gen_movi_tl(cpu_pc, dc->pc);
> +        }
> +        gen_exception(dc, EXCP_DEBUG);
> +    } else {
> +        switch (dc->is_jmp) {
> +        case DISAS_NEXT:
> +            gen_goto_tb(dc, 0, dc->pc);
> +            break;
> +        default:
> +        case DISAS_JUMP:
> +            break;
> +        case DISAS_UPDATE:
> +            /* indicate that the hash table must be used
> +               to find the next TB */
> +            tcg_gen_exit_tb(0);
> +            break;
> +        case DISAS_TB_JUMP:
> +            /* nothing more to generate */
> +            break;
> +        }
> +    }
> +
> +    gen_icount_end(tb, num_insns);
> +    *gen_opc_ptr = INDEX_op_end;
> +    if (search_pc) {
> +        j = gen_opc_ptr - gen_opc_buf;
> +        k++;
> +        while (k <= j) {
> +            gen_opc_instr_start[k++] = 0;
> +        }
> +    } else {
> +        tb->size = dc->pc - pc_start;
> +        tb->icount = num_insns;
> +    }
> +
> +#ifdef DEBUG_DISAS
> +    if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
> +        qemu_log("\n");
> +        log_target_disas(pc_start, dc->pc - pc_start, 0);
> +        qemu_log("\nisize=%d osize=%td\n",
> +            dc->pc - pc_start, gen_opc_ptr - gen_opc_buf);
> +    }
> +#endif
>  }
>
>  void gen_intermediate_code(CPUOpenRISCState *env, struct TranslationBlock *tb)
> --
> 1.7.9.5
>
>

Hi Blue,

On Wed, Jul 4, 2012 at 2:48 AM, Blue Swirl <blauwirbel@gmail.com> wrote:
> On Sun, Jul 1, 2012 at 2:45 AM, Jia Liu <proljc@gmail.com> wrote:
>> Add OpenRISC instruction tanslation routines.
>>
>> Signed-off-by: Jia Liu <proljc@gmail.com>
>> ---
>>  target-openrisc/translate.c | 1678 +++++++++++++++++++++++++++++++++++++++++++
>>  1 file changed, 1678 insertions(+)
>>
>> diff --git a/target-openrisc/translate.c b/target-openrisc/translate.c
>> index 4d4aa23..b69722c 100644
>> --- a/target-openrisc/translate.c
>> +++ b/target-openrisc/translate.c
>> @@ -26,6 +26,10 @@
>>  #include "qemu-log.h"
>>  #include "config.h"
>>
>> +#include "helper.h"
>> +#define GEN_HELPER 1
>> +#include "helper.h"
>> +
>>  #define OPENRISC_DISAS
>>
>>  #ifdef OPENRISC_DISAS
>> @@ -34,14 +38,1688 @@
>>  #  define LOG_DIS(...) do { } while (0)
>>  #endif
>>
>> +typedef struct DisasContext {
>> +    TranslationBlock *tb;
>> +    target_ulong pc, ppc, npc;
>> +    uint32_t tb_flags, synced_flags, flags;
>> +    uint32_t is_jmp;
>> +    uint32_t mem_idx;
>> +    int singlestep_enabled;
>> +    uint32_t delayed_branch;
>> +} DisasContext;
>> +
>> +static TCGv_ptr cpu_env;
>> +static TCGv cpu_sr;
>> +static TCGv cpu_R[32];
>> +static TCGv cpu_pc;
>> +static TCGv jmp_pc;            /* l.jr/l.jalr temp pc */
>> +static TCGv cpu_npc;
>> +static TCGv cpu_ppc;
>> +static TCGv_i32 env_btaken;    /* bf/bnf , F flag taken */
>> +static TCGv_i32 fpcsr;
>> +static TCGv machi, maclo;
>> +static TCGv fpmaddhi, fpmaddlo;
>> +static TCGv_i32 env_flags;
>> +#include "gen-icount.h"
>> +
>>  void openrisc_translate_init(void)
>>  {
>> +    static const char * const regnames[] = {
>> +        "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",
>> +    };
>> +    int i;
>> +
>> +    cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
>> +    cpu_sr = tcg_global_mem_new(TCG_AREG0,
>> +                                offsetof(CPUOpenRISCState, sr), "sr");
>> +    env_flags = tcg_global_mem_new_i32(TCG_AREG0,
>> +                                       offsetof(CPUOpenRISCState, flags),
>> +                                       "flags");
>> +    cpu_pc = tcg_global_mem_new(TCG_AREG0,
>> +                                offsetof(CPUOpenRISCState, pc), "pc");
>> +    cpu_npc = tcg_global_mem_new(TCG_AREG0,
>> +                                 offsetof(CPUOpenRISCState, npc), "npc");
>> +    cpu_ppc = tcg_global_mem_new(TCG_AREG0,
>> +                                 offsetof(CPUOpenRISCState, ppc), "ppc");
>> +    jmp_pc = tcg_global_mem_new(TCG_AREG0,
>> +                                offsetof(CPUOpenRISCState, jmp_pc), "jmp_pc");
>> +    env_btaken = tcg_global_mem_new_i32(TCG_AREG0,
>> +                                        offsetof(CPUOpenRISCState, btaken),
>> +                                        "btaken");
>> +    fpcsr = tcg_global_mem_new_i32(TCG_AREG0,
>> +                                   offsetof(CPUOpenRISCState, fpcsr),
>> +                                   "fpcsr");
>> +    machi = tcg_global_mem_new(TCG_AREG0,
>> +                               offsetof(CPUOpenRISCState, machi),
>> +                               "machi");
>> +    maclo = tcg_global_mem_new(TCG_AREG0,
>> +                               offsetof(CPUOpenRISCState, maclo),
>> +                               "maclo");
>> +    fpmaddhi = tcg_global_mem_new(TCG_AREG0,
>> +                                  offsetof(CPUOpenRISCState, fpmaddhi),
>> +                                  "fpmaddhi");
>> +    fpmaddlo = tcg_global_mem_new(TCG_AREG0,
>> +                                  offsetof(CPUOpenRISCState, fpmaddlo),
>> +                                  "fpmaddlo");
>> +    for (i = 0; i < 32; i++) {
>> +        cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
>> +                                      offsetof(CPUOpenRISCState, gpr[i]),
>> +                                      regnames[i]);
>> +    }
>> +#define GEN_HELPER 2
>> +#include "helper.h"
>> +}
>> +
>> +/* Writeback SR_F transaltion-space to execution-space.  */
>> +static inline void wb_SR_F(void)
>> +{
>> +    int label;
>> +
>> +    label = gen_new_label();
>> +    tcg_gen_andi_tl(cpu_sr, cpu_sr, ~SR_F);
>> +    tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, label);
>> +    tcg_gen_ori_tl(cpu_sr, cpu_sr, SR_F);
>> +    gen_set_label(label);
>> +}
>> +
>> +static inline int zero_extend(unsigned int val, int width)
>> +{
>> +    return val & ((1 << width) - 1);
>> +}
>> +
>> +static inline int sign_extend(unsigned int val, int width)
>> +{
>> +    int sval;
>> +
>> +    /* LSL */
>> +    val <<= TARGET_LONG_BITS - width;
>> +    sval = val;
>> +    /* ASR.  */
>> +    sval >>= TARGET_LONG_BITS - width;
>> +    return sval;
>> +}
>> +
>> +static inline void gen_sync_flags(DisasContext *dc)
>> +{
>> +    /* Sync the tb dependent flag between translate and runtime.  */
>> +    if (dc->tb_flags != dc->synced_flags) {
>> +        tcg_gen_movi_tl(env_flags, dc->tb_flags);
>> +        dc->synced_flags = dc->tb_flags;
>> +    }
>> +}
>> +
>> +static void gen_exception(DisasContext *dc, unsigned int excp)
>> +{
>> +    TCGv_i32 tmp = tcg_const_i32(excp);
>> +    gen_helper_exception(cpu_env, tmp);
>> +    tcg_temp_free_i32(tmp);
>> +}
>> +
>> +static void gen_illegal_exception(DisasContext *dc)
>> +{
>> +    tcg_gen_movi_tl(cpu_pc, dc->pc);
>> +    gen_exception(dc, EXCP_ILLEGAL);
>> +    dc->is_jmp = DISAS_UPDATE;
>> +}
>> +
>> +#ifdef TARGET_OPENRISC64
>> +static void check_ob64s(DisasContext *dc)
>> +{
>> +    if (!(dc->flags & CPUCFGR_OB64S)) {
>> +        gen_illegal_exception(dc);
>> +    }
>> +}
>> +
>> +static void check_of64s(DisasContext *dc)
>> +{
>> +    if (!(dc->flags & CPUCFGR_OF64S)) {
>> +        gen_illegal_exception(dc);
>> +    }
>> +}
>> +
>> +/* not used yet, open it when we need or64.  */
>> +/*static void check_ov64s(DisasContext *dc)
>> +{
>> +    if (!(dc->flags & CPUCFGR_OV64S)) {
>> +        gen_illegal_exception(dc);
>> +    }
>> +}*/
>> +#endif
>> +
>> +static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
>> +{
>> +    TranslationBlock *tb;
>> +    tb = dc->tb;
>> +    if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) &&
>> +                                       likely(!dc->singlestep_enabled)) {
>> +        tcg_gen_movi_tl(cpu_pc, dest);
>> +        tcg_gen_goto_tb(n);
>> +        tcg_gen_exit_tb((tcg_target_long)tb + n);
>> +    } else {
>> +        tcg_gen_movi_tl(cpu_pc, dest);
>> +        if (dc->singlestep_enabled) {
>> +            gen_exception(dc, EXCP_DEBUG);
>> +        }
>> +        tcg_gen_exit_tb(0);
>> +    }
>> +}
>> +
>> +static void gen_jump(DisasContext *dc, uint32_t imm, uint32_t reg, uint32_t op0)
>> +{
>> +    target_ulong tmp_pc;
>> +    int lab = gen_new_label();
>> +    TCGv sr_f = tcg_temp_new();
>> +    /* N26, 26bits imm */
>> +    tmp_pc = sign_extend((imm<<2), 26) + dc->pc;
>> +    tcg_gen_andi_tl(sr_f, cpu_sr, SR_F);
>> +
>> +    if (op0 == 0x00) {    /* l.j */
>> +        tcg_gen_movi_tl(jmp_pc, tmp_pc);
>> +    } else if (op0 == 0x01) {    /* l.jal */
>> +        tcg_gen_movi_tl(cpu_R[9], (dc->pc + 8));
>> +        tcg_gen_movi_tl(jmp_pc, tmp_pc);
>> +    } else if (op0 == 0x03) {    /* l.bnf */
>> +        tcg_gen_movi_tl(jmp_pc, dc->pc+8);
>> +        tcg_gen_brcondi_i32(TCG_COND_EQ, sr_f, SR_F, lab);
>> +        tcg_gen_movi_tl(jmp_pc, tmp_pc);
>> +        gen_set_label(lab);
>> +    } else if (op0 == 0x04) {    /* l.bf */
>> +        tcg_gen_movi_tl(jmp_pc, dc->pc+8);
>> +        tcg_gen_brcondi_i32(TCG_COND_NE, sr_f, SR_F, lab);
>> +        tcg_gen_movi_tl(jmp_pc, tmp_pc);
>> +        gen_set_label(lab);
>> +    } else if (op0 == 0x11) {    /* l.jr */
>> +        tcg_gen_mov_tl(jmp_pc, cpu_R[reg]);
>> +    } else if (op0 == 0x12) {    /* l.jalr */
>> +        tcg_gen_movi_tl(cpu_R[9], (dc->pc + 8));
>> +        tcg_gen_mov_tl(jmp_pc, cpu_R[reg]);
>> +    } else {
>> +        gen_illegal_exception(dc);
>> +    }
>> +
>> +    tcg_temp_free(sr_f);
>> +    dc->delayed_branch = 2;
>> +    dc->tb_flags |= D_FLAG;
>> +    gen_sync_flags(dc);
>> +}
>> +
>> +static inline uint32_t field(uint32_t val, int start, int length)
>> +{
>> +    val >>= start;
>> +    val &= ~(~0 << length);
>> +    return val;
>> +}
>> +
>> +static void dec_calc(DisasContext *dc, uint32_t insn)
>> +{
>> +    uint32_t op0, op1, op2;
>> +    uint32_t ra, rb, rd;
>> +    op0 = field(insn, 0, 4);
>> +    op1 = field(insn, 8, 2);
>> +    op2 = field(insn, 6, 2);
>> +    ra = field(insn, 16, 5);
>> +    rb = field(insn, 11, 5);
>> +    rd = field(insn, 21, 5);
>> +
>> +    switch (op0) {
>> +    case 0x0000:
>> +        switch (op1) {
>> +        case 0x00:    /* l.add */
>> +            LOG_DIS("l.add r%d, r%d, r%d\n", rd, ra, rb);
>> +            {
>> +                int lab = gen_new_label();
>> +                TCGv_i64 ta = tcg_temp_new_i64();
>> +                TCGv_i64 tb = tcg_temp_new_i64();
>> +                TCGv_i64 td = tcg_temp_local_new_i64();
>> +                TCGv_i32 res = tcg_temp_local_new_i32();
>> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
>> +                tcg_gen_extu_i32_i64(ta, cpu_R[ra]);
>> +                tcg_gen_extu_i32_i64(tb, cpu_R[rb]);
>> +                tcg_gen_add_i64(td, ta, tb);
>> +                tcg_gen_trunc_i64_i32(res, td);
>> +                tcg_gen_shri_i64(td, td, 31);
>> +                tcg_gen_andi_i64(td, td, 0x3);
>> +                /* Jump to lab when no overflow.  */
>> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab);
>> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab);
>> +                tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY));
>> +                tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE);
>> +                tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab);
>> +                gen_exception(dc, EXCP_RANGE);
>> +                gen_set_label(lab);
>> +                tcg_gen_mov_i32(cpu_R[rd], res);
>> +                tcg_temp_free_i64(ta);
>> +                tcg_temp_free_i64(tb);
>> +                tcg_temp_free_i64(td);
>> +                tcg_temp_free_i32(res);
>> +                tcg_temp_free_i32(sr_ove);
>> +            }
>> +            break;
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x0001:    /* l.addc */
>> +        switch (op1) {
>> +        case 0x00:
>> +            LOG_DIS("l.addc r%d, r%d, r%d\n", rd, ra, rb);
>> +            {
>> +                int lab = gen_new_label();
>> +                TCGv_i64 ta = tcg_temp_new_i64();
>> +                TCGv_i64 tb = tcg_temp_new_i64();
>> +                TCGv_i64 tcy = tcg_temp_local_new_i64();
>> +                TCGv_i64 td = tcg_temp_local_new_i64();
>> +                TCGv_i32 res = tcg_temp_local_new_i32();
>> +                TCGv_i32 sr_cy = tcg_temp_local_new_i32();
>> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
>> +                tcg_gen_extu_i32_i64(ta, cpu_R[ra]);
>> +                tcg_gen_extu_i32_i64(tb, cpu_R[rb]);
>> +                tcg_gen_andi_i32(sr_cy, cpu_sr, SR_CY);
>> +                tcg_gen_extu_i32_i64(tcy, sr_cy);
>> +                tcg_gen_shri_i64(tcy, tcy, 10);
>> +                tcg_gen_add_i64(td, ta, tb);
>> +                tcg_gen_add_i64(td, td, tcy);
>> +                tcg_gen_trunc_i64_i32(res, td);
>> +                tcg_gen_shri_i64(td, td, 32);
>> +                tcg_gen_andi_i64(td, td, 0x3);
>> +                /* Jump to lab when no overflow.  */
>> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab);
>> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab);
>> +                tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY));
>> +                tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE);
>> +                tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab);
>> +                gen_exception(dc, EXCP_RANGE);
>> +                gen_set_label(lab);
>> +                tcg_gen_mov_i32(cpu_R[rd], res);
>> +                tcg_temp_free_i64(ta);
>> +                tcg_temp_free_i64(tb);
>> +                tcg_temp_free_i64(tcy);
>> +                tcg_temp_free_i64(td);
>> +                tcg_temp_free_i32(res);
>> +                tcg_temp_free_i32(sr_cy);
>> +                tcg_temp_free_i32(sr_ove);
>> +            }
>> +            break;
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x0002:    /* l.sub */
>> +        switch (op1) {
>> +        case 0x00:
>> +            LOG_DIS("l.sub r%d, r%d, r%d\n", rd, ra, rb);
>> +            {
>> +                int lab = gen_new_label();
>> +                TCGv_i64 ta = tcg_temp_new_i64();
>> +                TCGv_i64 tb = tcg_temp_new_i64();
>> +                TCGv_i64 td = tcg_temp_local_new_i64();
>> +                TCGv_i32 res = tcg_temp_local_new_i32();
>> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
>> +
>> +                tcg_gen_extu_i32_i64(ta, cpu_R[ra]);
>> +                tcg_gen_extu_i32_i64(tb, cpu_R[rb]);
>> +                tcg_gen_sub_i64(td, ta, tb);
>> +                tcg_gen_trunc_i64_i32(res, td);
>> +                tcg_gen_shri_i64(td, td, 31);
>> +                tcg_gen_andi_i64(td, td, 0x3);
>> +                /* Jump to lab when no overflow.  */
>> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab);
>> +                tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab);
>> +                tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY));
>> +                tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE);
>> +                tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab);
>> +                gen_exception(dc, EXCP_RANGE);
>> +                gen_set_label(lab);
>> +                tcg_gen_mov_i32(cpu_R[rd], res);
>> +                tcg_temp_free_i64(ta);
>> +                tcg_temp_free_i64(tb);
>> +                tcg_temp_free_i64(td);
>> +                tcg_temp_free_i32(res);
>> +                tcg_temp_free_i32(sr_ove);
>> +            }
>> +            break;
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x0003:    /* l.and */
>> +        switch (op1) {
>> +        case 0x00:
>> +            LOG_DIS("l.and r%d, r%d, r%d\n", rd, ra, rb);
>> +            tcg_gen_and_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
>> +            break;
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x0004:    /* l.or */
>> +        switch (op1) {
>> +        case 0x00:
>> +            LOG_DIS("l.or r%d, r%d, r%d\n", rd, ra, rb);
>> +            tcg_gen_or_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
>> +            break;
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x0005:
>> +        switch (op1) {
>> +        case 0x00:    /* l.xor */
>> +            LOG_DIS("l.xor r%d, r%d, r%d\n", rd, ra, rb);
>> +            tcg_gen_xor_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
>> +            break;
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x0006:
>> +        switch (op1) {
>> +        case 0x03:    /* l.mul */
>> +            LOG_DIS("l.mul r%d, r%d, r%d\n", rd, ra, rb);
>> +            if (ra != 0 && rb != 0) {
>> +                gen_helper_mul32(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +            } else {
>> +                tcg_gen_movi_tl(cpu_R[rd], 0x0);
>> +            }
>> +            break;
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x0009:
>> +        switch (op1) {
>> +        case 0x03:    /* l.div */
>> +            LOG_DIS("l.div r%d, r%d, r%d\n", rd, ra, rb);
>> +            {
>> +                int lab0 = gen_new_label();
>> +                int lab1 = gen_new_label();
>> +                int lab2 = gen_new_label();
>> +                int lab3 = gen_new_label();
>> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
>> +                if (rb == 0) {
>> +                    tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY));
>> +                    tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE);
>> +                    tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab0);
>> +                    gen_exception(dc, EXCP_RANGE);
>> +                    gen_set_label(lab0);
>> +                } else {
>> +                    tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[rb],
>> +                                       0x00000000, lab1);
>> +                    tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[ra],
>> +                                       0x80000000, lab2);
>> +                    tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[rb],
>> +                                       0xffffffff, lab2);
>> +                    gen_set_label(lab1);
>> +                    tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY));
>> +                    tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE);
>> +                    tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab3);
>> +                    gen_exception(dc, EXCP_RANGE);
>> +                    gen_set_label(lab2);
>> +                    tcg_gen_div_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
>> +                    gen_set_label(lab3);
>> +                }
>> +                tcg_temp_free_i32(sr_ove);
>> +            }
>> +            break;
>> +
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x000a:
>> +        switch (op1) {
>> +        case 0x03:    /* l.divu */
>> +            LOG_DIS("l.divu r%d, r%d, r%d\n", rd, ra, rb);
>> +            {
>> +                int lab0 = gen_new_label();
>> +                int lab1 = gen_new_label();
>> +                int lab2 = gen_new_label();
>> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
>> +                if (rb == 0) {
>> +                    tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY));
>> +                    tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE);
>> +                    tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab0);
>> +                    gen_exception(dc, EXCP_RANGE);
>> +                    gen_set_label(lab0);
>> +                } else {
>> +                    tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[rb],
>> +                                       0x00000000, lab1);
>> +                    tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY));
>> +                    tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE);
>> +                    tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab2);
>> +                    gen_exception(dc, EXCP_RANGE);
>> +                    gen_set_label(lab1);
>> +                    tcg_gen_divu_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
>> +                    gen_set_label(lab2);
>> +                }
>> +                tcg_temp_free_i32(sr_ove);
>> +            }
>> +            break;
>> +
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x000b:
>> +        switch (op1) {
>> +        case 0x03:    /* l.mulu */
>> +            LOG_DIS("l.mulu r%d, r%d, r%d\n", rd, ra, rb);
>> +            if (rb != 0 && ra != 0) {
>> +                TCGv_i64 result = tcg_temp_local_new_i64();
>> +                TCGv_i64 tra = tcg_temp_local_new_i64();
>> +                TCGv_i64 trb = tcg_temp_local_new_i64();
>> +                TCGv_i64 high = tcg_temp_new_i64();
>> +                TCGv_i32 sr_ove = tcg_temp_local_new_i32();
>> +                int lab = gen_new_label();
>> +                /* Calculate the each result.  */
>> +                tcg_gen_extu_i32_i64(tra, cpu_R[ra]);
>> +                tcg_gen_extu_i32_i64(trb, cpu_R[rb]);
>> +                tcg_gen_mul_i64(result, tra, trb);
>> +                tcg_temp_free_i64(tra);
>> +                tcg_temp_free_i64(trb);
>> +                tcg_gen_shri_i64(high, result, TARGET_LONG_BITS);
>> +                /* Overflow or not.  */
>> +                tcg_gen_brcondi_i64(TCG_COND_EQ, high, 0x00000000, lab);
>> +                tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY));
>> +                tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE);
>> +                tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab);
>> +                gen_exception(dc, EXCP_RANGE);
>> +                gen_set_label(lab);
>> +                tcg_temp_free_i64(high);
>> +                tcg_gen_trunc_i64_tl(cpu_R[rd], result);
>> +                tcg_temp_free_i64(result);
>> +                tcg_temp_free_i32(sr_ove);
>> +            } else {
>> +                tcg_gen_movi_tl(cpu_R[rd], 0);
>> +            }
>> +            break;
>> +
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x000e:
>> +        switch (op1) {
>> +        case 0x00:    /* l.cmov */
>> +            LOG_DIS("l.cmov r%d, r%d, r%d\n", rd, ra, rb);
>> +            {
>> +                int lab = gen_new_label();
>> +                TCGv res = tcg_temp_local_new();
>> +                TCGv sr_f = tcg_temp_new();
>> +                tcg_gen_andi_tl(sr_f, cpu_sr, SR_F);
>> +                tcg_gen_mov_tl(res, cpu_R[rb]);
>> +                tcg_gen_brcondi_tl(TCG_COND_NE, sr_f, SR_F, lab);
>> +                tcg_gen_mov_tl(res, cpu_R[ra]);
>> +                gen_set_label(lab);
>> +                tcg_gen_mov_tl(cpu_R[rd], res);
>> +                tcg_temp_free(sr_f);
>> +                tcg_temp_free(res);
>> +            }
>> +            break;
>> +
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x000f:
>> +        switch (op1) {
>> +        case 0x00:    /* l.ff1 */
>> +            LOG_DIS("l.ff1 r%d, r%d, r%d\n", rd, ra, rb);
>> +            gen_helper_ff1(cpu_R[rd], cpu_R[ra]);
>> +            break;
>> +        case 0x01:    /* l.fl1 */
>> +            LOG_DIS("l.fl1 r%d, r%d, r%d\n", rd, ra, rb);
>> +            gen_helper_fl1(cpu_R[rd], cpu_R[ra]);
>> +            break;
>> +
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x0008:
>> +        switch (op1) {
>> +        case 0x00:
>> +            switch (op2) {
>> +            case 0x00:    /* l.sll */
>> +                LOG_DIS("l.sll r%d, r%d, r%d\n", rd, ra, rb);
>> +                tcg_gen_shl_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
>> +                break;
>> +            case 0x01:    /* l.srl */
>> +                LOG_DIS("l.srl r%d, r%d, r%d\n", rd, ra, rb);
>> +                tcg_gen_shr_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
>> +                break;
>> +            case 0x02:    /* l.sra */
>> +                LOG_DIS("l.sra r%d, r%d, r%d\n", rd, ra, rb);
>> +                tcg_gen_sar_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
>> +                break;
>> +            case 0x03:    /* l.ror */
>> +                LOG_DIS("l.ror r%d, r%d, r%d\n", rd, ra, rb);
>> +                tcg_gen_rotr_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]);
>> +                break;
>> +
>> +            default:
>> +                gen_illegal_exception(dc);
>> +                break;
>> +            }
>> +            break;
>> +
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x000c:
>> +        switch (op1) {
>> +        case 0x00:
>> +            switch (op2) {
>> +            case 0x00:    /* l.exths */
>> +                LOG_DIS("l.exths r%d, r%d\n", rd, ra);
>> +                tcg_gen_ext16s_tl(cpu_R[rd], cpu_R[ra]);
>> +                break;
>> +            case 0x01:    /* l.extbs */
>> +                LOG_DIS("l.extbs r%d, r%d\n", rd, ra);
>> +                tcg_gen_ext8s_tl(cpu_R[rd], cpu_R[ra]);
>> +                break;
>> +            case 0x02:    /* l.exthz */
>> +                LOG_DIS("l.exthz r%d, r%d\n", rd, ra);
>> +                tcg_gen_ext16u_tl(cpu_R[rd], cpu_R[ra]);
>> +                break;
>> +            case 0x03:    /* l.extbz */
>> +                LOG_DIS("l.extbz r%d, r%d\n", rd, ra);
>> +                tcg_gen_ext8u_tl(cpu_R[rd], cpu_R[ra]);
>> +                break;
>> +
>> +            default:
>> +                gen_illegal_exception(dc);
>> +                break;
>> +            }
>> +            break;
>> +
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x000d:
>> +        switch (op1) {
>> +        case 0x00:
>> +            switch (op2) {
>> +            case 0x00:    /* l.extws */
>> +                LOG_DIS("l.extws r%d, r%d\n", rd, ra);
>> +                tcg_gen_ext32s_tl(cpu_R[rd], cpu_R[ra]);
>> +                break;
>> +            case 0x01:    /* l.extwz */
>> +                LOG_DIS("l.extwz r%d, r%d\n", rd, ra);
>> +                tcg_gen_ext32u_tl(cpu_R[rd], cpu_R[ra]);
>> +                break;
>> +
>> +            default:
>> +                gen_illegal_exception(dc);
>> +                break;
>> +            }
>> +            break;
>> +
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    default:
>> +        gen_illegal_exception(dc);
>> +        break;
>> +    }
>> +}
>> +
>> +static void dec_misc(DisasContext *dc, uint32_t insn)
>> +{
>> +    uint32_t op0, op1;
>> +    uint32_t ra, rb, rd;
>> +    uint32_t /*L6, K5, */I16, I5, I11, N26, tmp;
>> +    op0 = field(insn, 26, 6);
>> +    op1 = field(insn, 24, 2);
>> +    ra = field(insn, 16, 5);
>> +    rb = field(insn, 11, 5);
>> +    rd = field(insn, 21, 5);
>> +    /*L6 = field(insn, 5, 6);
>> +    K5 = field(insn, 0, 5);*/
>> +    I16 = field(insn, 0, 16);
>> +    I5 = field(insn, 21, 5);
>> +    I11 = field(insn, 0, 11);
>> +    N26 = field(insn, 0, 26);
>> +    tmp = (I5<<11) + I11;
>> +
>> +    switch (op0) {
>> +    case 0x00:    /* l.j */
>> +        LOG_DIS("l.j %d\n", N26);
>> +    case 0x01:    /* l.jal */
>> +        LOG_DIS("l.jal %d\n", N26);
>> +    case 0x03:    /* l.bnf */
>> +        LOG_DIS("l.bnf %d\n", N26);
>> +    case 0x04:    /* l.bf */
>> +        LOG_DIS("l.bf %d\n", N26);
>> +
>> +        gen_jump(dc, N26, 0, op0);
>
> The cases 0x00 to 0x03 will fall through to this case, calling LOG_DIS
> one to four times.

Sorry, I can't find a better path. Is this code OK?

    switch (op0) {
    case 0x00:    /* l.j */
    case 0x01:    /* l.jal */
    case 0x03:    /* l.bnf */
    case 0x04:    /* l.bf */
        LOG_DIS("l.j/l.jal/l.bnf/l.bf %d\n", N26);

        gen_jump(dc, N26, 0, op0);


>
>> +        break;
>> +
>> +    case 0x05:
>> +        switch (op1) {
>> +        case 0x01:    /* l.nop */
>> +            LOG_DIS("l.nop %d\n", I16);
>> +            break;
>> +
>> +        default:
>> +            gen_illegal_exception(dc);
>> +            break;
>> +        }
>> +        break;
>> +
>> +    case 0x11:    /* l.jr */
>> +        LOG_DIS("l.jr r%d\n", rb);
>> +    case 0x12:    /* l.jalr */
>> +        LOG_DIS("l.jalr r%d\n", rb);
>> +
>> +        gen_jump(dc, 0, rb, op0);
>
> Also here.
>

And, this?

    case 0x11:    /* l.jr */
    case 0x12:    /* l.jalr */
        LOG_DIS("l.jr/l.jalr r%d\n", rb);

        gen_jump(dc, 0, rb, op0);


>> +        break;
>> +
>> +    case 0x13:    /* l.maci */
>> +        LOG_DIS("l.maci %d, r%d, %d\n", I5, ra, I11);
>> +        {
>> +            TCGv_i64 t1 = tcg_temp_new_i64();
>> +            TCGv_i64 t2 = tcg_temp_new_i64();
>> +            TCGv_i32 dst = tcg_temp_new_i32();
>> +            TCGv ttmp = tcg_const_tl(tmp);
>> +            tcg_gen_mul_tl(dst, cpu_R[ra], ttmp);
>> +            tcg_gen_ext_i32_i64(t1, dst);
>> +            tcg_gen_concat_i32_i64(t2, maclo, machi);
>> +            tcg_gen_add_i64(t2, t2, t1);
>> +            tcg_gen_trunc_i64_i32(maclo, t2);
>> +            tcg_gen_shri_i64(t2, t2, 32);
>> +            tcg_gen_trunc_i64_i32(machi, t2);
>> +            tcg_temp_free_i32(dst);
>> +            tcg_temp_free(ttmp);
>> +            tcg_temp_free_i64(t1);
>> +            tcg_temp_free_i64(t2);
>> +        }
>> +        break;
>> +
>> +    case 0x09:    /* l.rfe */
>> +        LOG_DIS("l.rfe\n");
>> +        {
>> +            gen_helper_rfe(cpu_env);
>> +            dc->is_jmp = DISAS_UPDATE;
>> +        }
>> +        break;
>> +
>> +    case 0x1c:    /* l.cust1 */
>> +        LOG_DIS("l.cust1\n");
>> +        break;
>> +
>> +    case 0x1d:    /* l.cust2 */
>> +        LOG_DIS("l.cust2\n");
>> +        break;
>> +
>> +    case 0x1e:    /* l.cust3 */
>> +        LOG_DIS("l.cust3\n");
>> +        break;
>> +
>> +    case 0x1f:    /* l.cust4 */
>> +        LOG_DIS("l.cust4\n");
>> +        break;
>> +
>> +    case 0x3c:    /* l.cust5 */
>> +        /*LOG_DIS("l.cust5 r%d, r%d, r%d, %d, %d\n", rd, ra, rb, L6, K5);*/
>> +        break;
>> +
>> +    case 0x3d:    /* l.cust6 */
>> +        LOG_DIS("l.cust6\n");
>> +        break;
>> +
>> +    case 0x3e:    /* l.cust7 */
>> +        LOG_DIS("l.cust7\n");
>> +        break;
>> +
>> +    case 0x3f:    /* l.cust8 */
>> +        LOG_DIS("l.cust8\n");
>> +        break;
>> +
>> +    case 0x20:    /* l.ld */
>> +        LOG_DIS("l.ld r%d, r%d, %d\n", rd, ra, I16);
>> +        {
>> +#ifdef TARGET_OPENRISC64
>> +            check_ob64s(dc);
>> +            TCGv_i64 t0 = tcg_temp_new_i64();
>> +            tcg_gen_addi_i64(t0, cpu_R[ra], sign_extend(I16, 16));
>> +            tcg_gen_qemu_ld64(cpu_R[rd], t0, dc->mem_idx);
>> +            tcg_temp_free_i64(t0);
>> +#endif
>> +        }
>> +        break;
>> +
>> +    case 0x21:    /* l.lwz */
>> +        LOG_DIS("l.lwz r%d, r%d, %d\n", rd, ra, I16);
>> +        {
>> +            TCGv t0 = tcg_temp_new();
>> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
>> +            tcg_gen_qemu_ld32u(cpu_R[rd], t0, dc->mem_idx);
>> +            tcg_temp_free(t0);
>> +        }
>> +        break;
>> +
>> +    case 0x22:    /* l.lws */
>> +        LOG_DIS("l.lws r%d, r%d, %d\n", rd, ra, I16);
>> +        {
>> +            TCGv t0 = tcg_temp_new();
>> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
>> +            tcg_gen_qemu_ld32s(cpu_R[rd], t0, dc->mem_idx);
>> +            tcg_temp_free(t0);
>> +        }
>> +        break;
>> +
>> +    case 0x23:    /* l.lbz */
>> +        LOG_DIS("l.lbz r%d, r%d, %d\n", rd, ra, I16);
>> +        {
>> +            TCGv t0 = tcg_temp_new();
>> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
>> +            tcg_gen_qemu_ld8u(cpu_R[rd], t0, dc->mem_idx);
>> +            tcg_temp_free(t0);
>> +        }
>> +        break;
>> +
>> +    case 0x24:    /* l.lbs */
>> +        LOG_DIS("l.lbs r%d, r%d, %d\n", rd, ra, I16);
>> +        {
>> +            TCGv t0 = tcg_temp_new();
>> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
>> +            tcg_gen_qemu_ld8s(cpu_R[rd], t0, dc->mem_idx);
>> +            tcg_temp_free(t0);
>> +        }
>> +        break;
>> +
>> +    case 0x25:    /* l.lhz */
>> +        LOG_DIS("l.lhz r%d, r%d, %d\n", rd, ra, I16);
>> +        {
>> +            TCGv t0 = tcg_temp_new();
>> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
>> +            tcg_gen_qemu_ld16u(cpu_R[rd], t0, dc->mem_idx);
>> +            tcg_temp_free(t0);
>> +        }
>> +        break;
>> +
>> +    case 0x26:    /* l.lhs */
>> +        LOG_DIS("l.lhs r%d, r%d, %d\n", rd, ra, I16);
>> +        {
>> +            TCGv t0 = tcg_temp_new();
>> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16));
>> +            tcg_gen_qemu_ld16s(cpu_R[rd], t0, dc->mem_idx);
>> +            tcg_temp_free(t0);
>> +        }
>> +        break;
>> +
>> +    case 0x27:    /* l.addi */
>> +        LOG_DIS("l.addi r%d, r%d, %d\n", rd, ra, I16);
>> +        {
>> +            int lab = gen_new_label();
>> +            TCGv_i64 ta = tcg_temp_new_i64();
>> +            TCGv_i64 td = tcg_temp_local_new_i64();
>> +            TCGv_i32 res = tcg_temp_local_new_i32();
>> +            TCGv_i32 sr_ove = tcg_temp_local_new_i32();
>> +            tcg_gen_extu_i32_i64(ta, cpu_R[ra]);
>> +            tcg_gen_addi_i64(td, ta, sign_extend(I16, 16));
>> +            tcg_gen_trunc_i64_i32(res, td);
>> +            tcg_gen_shri_i64(td, td, 32);
>> +            tcg_gen_andi_i64(td, td, 0x3);
>> +            /* Jump to lab when no overflow.  */
>> +            tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab);
>> +            tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab);
>> +            tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY));
>> +            tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE);
>> +            tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab);
>> +            gen_exception(dc, EXCP_RANGE);
>> +            gen_set_label(lab);
>> +            tcg_gen_mov_i32(cpu_R[rd], res);
>> +            tcg_temp_free_i64(ta);
>> +            tcg_temp_free_i64(td);
>> +            tcg_temp_free_i32(res);
>> +            tcg_temp_free_i32(sr_ove);
>> +        }
>> +        break;
>> +
>> +    case 0x28:    /* l.addic */
>> +        LOG_DIS("l.addic r%d, r%d, %d\n", rd, ra, I16);
>> +        {
>> +            int lab = gen_new_label();
>> +            TCGv_i64 ta = tcg_temp_new_i64();
>> +            TCGv_i64 td = tcg_temp_local_new_i64();
>> +            TCGv_i64 tcy = tcg_temp_local_new_i64();
>> +            TCGv_i32 res = tcg_temp_local_new_i32();
>> +            TCGv_i32 sr_cy = tcg_temp_local_new_i32();
>> +            TCGv_i32 sr_ove = tcg_temp_local_new_i32();
>> +            tcg_gen_extu_i32_i64(ta, cpu_R[ra]);
>> +            tcg_gen_andi_i32(sr_cy, cpu_sr, SR_CY);
>> +            tcg_gen_shri_i32(sr_cy, sr_cy, 10);
>> +            tcg_gen_extu_i32_i64(tcy, sr_cy);
>> +            tcg_gen_addi_i64(td, ta, sign_extend(I16, 16));
>> +            tcg_gen_add_i64(td, td, tcy);
>> +            tcg_gen_trunc_i64_i32(res, td);
>> +            tcg_gen_shri_i64(td, td, 32);
>> +            tcg_gen_andi_i64(td, td, 0x3);
>> +            /* Jump to lab when no overflow.  */
>> +            tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab);
>> +            tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab);
>> +            tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY));
>> +            tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE);
>> +            tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab);
>> +            gen_exception(dc, EXCP_RANGE);
>> +            gen_set_label(lab);
>> +            tcg_gen_mov_i32(cpu_R[rd], res);
>> +            tcg_temp_free_i64(ta);
>> +            tcg_temp_free_i64(td);
>> +            tcg_temp_free_i64(tcy);
>> +            tcg_temp_free_i32(res);
>> +            tcg_temp_free_i32(sr_cy);
>> +            tcg_temp_free_i32(sr_ove);
>> +        }
>> +        break;
>> +
>> +    case 0x29:    /* l.andi */
>> +        LOG_DIS("l.andi r%d, r%d, %d\n", rd, ra, I16);
>> +        tcg_gen_andi_tl(cpu_R[rd], cpu_R[ra], zero_extend(I16, 16));
>> +        break;
>> +
>> +    case 0x2a:    /* l.ori */
>> +        LOG_DIS("l.ori r%d, r%d, %d\n", rd, ra, I16);
>> +        tcg_gen_ori_tl(cpu_R[rd], cpu_R[ra], zero_extend(I16, 16));
>> +        break;
>> +
>> +    case 0x2b:    /* l.xori */
>> +        LOG_DIS("l.xori r%d, r%d, %d\n", rd, ra, I16);
>> +        tcg_gen_xori_tl(cpu_R[rd], cpu_R[ra], sign_extend(I16, 16));
>> +        break;
>> +
>> +    case 0x2c:    /* l.muli */
>> +        LOG_DIS("l.muli r%d, r%d, %d\n", rd, ra, I16);
>> +        if (ra != 0 && I16 != 0) {
>> +            TCGv_i32 im = tcg_const_i32(I16);
>> +            gen_helper_mul32(cpu_R[rd], cpu_env, cpu_R[ra], im);
>> +            tcg_temp_free_i32(im);
>> +        } else {
>> +            tcg_gen_movi_tl(cpu_R[rd], 0x0);
>> +        }
>> +        break;
>> +
>> +    case 0x2d:    /* l.mfspr */
>> +        LOG_DIS("l.mfspr r%d, r%d, %d\n", rd, ra, I16);
>> +        break;
>> +
>> +    case 0x30:    /* l.mtspr */
>> +        LOG_DIS("l.mtspr %d, r%d, r%d, %d\n", I5, ra, rb, I11);
>> +        break;
>> +
>> +    case 0x34:    /* l.sd */
>> +        LOG_DIS("l.sd %d, r%d, r%d, %d\n", I5, ra, rb, I11);
>> +        {
>> +#ifdef TARGET_OPENRISC64
>> +            check_ob64s(dc);
>> +            TCGv_i64 t0 = tcg_temp_new_i64();
>> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(tmp, 16));
>> +            tcg_gen_qemu_st64(cpu_R[rb], t0, dc->mem_idx);
>> +            tcg_temp_free_i64(t0);
>> +#endif
>> +        }
>> +        break;
>> +
>> +    case 0x35:    /* l.sw */
>> +        LOG_DIS("l.sw %d, r%d, r%d, %d\n", I5, ra, rb, I11);
>> +        {
>> +            TCGv t0 = tcg_temp_new();
>> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(tmp, 16));
>> +            tcg_gen_qemu_st32(cpu_R[rb], t0, dc->mem_idx);
>> +            tcg_temp_free(t0);
>> +        }
>> +        break;
>> +
>> +    case 0x36:    /* l.sb */
>> +        LOG_DIS("l.sb %d, r%d, r%d, %d\n", I5, ra, rb, I11);
>> +        {
>> +            TCGv t0 = tcg_temp_new();
>> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(tmp, 16));
>> +            tcg_gen_qemu_st8(cpu_R[rb], t0, dc->mem_idx);
>> +            tcg_temp_free(t0);
>> +        }
>> +        break;
>> +
>> +    case 0x37:    /* l.sh */
>> +        LOG_DIS("l.sh %d, r%d, r%d, %d\n", I5, ra, rb, I11);
>> +        {
>> +            TCGv t0 = tcg_temp_new();
>> +            tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(tmp, 16));
>> +            tcg_gen_qemu_st16(cpu_R[rb], t0, dc->mem_idx);
>> +            tcg_temp_free(t0);
>> +        }
>> +        break;
>> +
>> +    default:
>> +        gen_illegal_exception(dc);
>> +        break;
>> +    }
>> +}
>> +
>> +static void dec_mac(DisasContext *dc, uint32_t insn)
>> +{
>> +    uint32_t op0;
>> +    uint32_t ra, rb;
>> +    op0 = field(insn, 0, 4);
>> +    ra = field(insn, 16, 5);
>> +    rb = field(insn, 11, 5);
>> +
>> +    switch (op0) {
>> +    case 0x0001:    /* l.mac */
>> +        LOG_DIS("l.mac r%d, r%d\n", ra, rb);
>> +        {
>> +            TCGv_i32 t0 = tcg_temp_new_i32();
>> +            TCGv_i64 t1 = tcg_temp_new_i64();
>> +            TCGv_i64 t2 = tcg_temp_new_i64();
>> +            tcg_gen_mul_tl(t0, cpu_R[ra], cpu_R[rb]);
>> +            tcg_gen_ext_i32_i64(t1, t0);
>> +            tcg_gen_concat_i32_i64(t2, maclo, machi);
>> +            tcg_gen_add_i64(t2, t2, t1);
>> +            tcg_gen_trunc_i64_i32(maclo, t2);
>> +            tcg_gen_shri_i64(t2, t2, 32);
>> +            tcg_gen_trunc_i64_i32(machi, t2);
>> +            tcg_temp_free_i32(t0);
>> +            tcg_temp_free_i64(t1);
>> +            tcg_temp_free_i64(t2);
>> +        }
>> +        break;
>> +
>> +    case 0x0002:    /* l.msb */
>> +        LOG_DIS("l.msb r%d, r%d\n", ra, rb);
>> +        {
>> +            TCGv_i32 t0 = tcg_temp_new_i32();
>> +            TCGv_i64 t1 = tcg_temp_new_i64();
>> +            TCGv_i64 t2 = tcg_temp_new_i64();
>> +            tcg_gen_mul_tl(t0, cpu_R[ra], cpu_R[rb]);
>> +            tcg_gen_ext_i32_i64(t1, t0);
>> +            tcg_gen_concat_i32_i64(t2, maclo, machi);
>> +            tcg_gen_sub_i64(t2, t2, t1);
>> +            tcg_gen_trunc_i64_i32(maclo, t2);
>> +            tcg_gen_shri_i64(t2, t2, 32);
>> +            tcg_gen_trunc_i64_i32(machi, t2);
>> +            tcg_temp_free_i32(t0);
>> +            tcg_temp_free_i64(t1);
>> +            tcg_temp_free_i64(t2);
>> +        }
>> +        break;
>> +
>> +    default:
>> +        gen_illegal_exception(dc);
>> +        break;
>> +   }
>> +}
>> +
>> +static void dec_logic(DisasContext *dc, uint32_t insn)
>> +{
>> +    uint32_t op0;
>> +    uint32_t rd, ra, L6;
>> +    op0 = field(insn, 6, 2);
>> +    rd = field(insn, 21, 5);
>> +    ra = field(insn, 16, 5);
>> +    L6 = field(insn, 0, 6);
>> +
>> +    switch (op0) {
>> +    case 0x00:    /* l.slli */
>> +        LOG_DIS("l.slli r%d, r%d, %d\n", rd, ra, L6);
>> +        tcg_gen_shli_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f));
>> +        break;
>> +
>> +    case 0x01:    /* l.srli */
>> +        LOG_DIS("l.srli r%d, r%d, %d\n", rd, ra, L6);
>> +        tcg_gen_shri_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f));
>> +        break;
>> +
>> +    case 0x02:    /* l.srai */
>> +        LOG_DIS("l.srai r%d, r%d, %d\n", rd, ra, L6);
>> +        tcg_gen_sari_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f)); break;
>> +
>> +    case 0x03:    /* l.rori */
>> +        LOG_DIS("l.rori r%d, r%d, %d\n", rd, ra, L6);
>> +        tcg_gen_rotri_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f));
>> +        break;
>> +
>> +    default:
>> +        gen_illegal_exception(dc);
>> +        break;
>> +    }
>> +}
>> +
>> +static void dec_M(DisasContext *dc, uint32_t insn)
>> +{
>> +    uint32_t op0;
>> +    uint32_t rd;
>> +    uint32_t K16;
>> +    op0 = field(insn, 16, 1);
>> +    rd = field(insn, 21, 5);
>> +    K16 = field(insn, 0, 16);
>> +
>> +    switch (op0) {
>> +    case 0x0:    /* l.movhi */
>> +        LOG_DIS("l.movhi  r%d, %d\n", rd, K16);
>> +        tcg_gen_movi_tl(cpu_R[rd], (K16 << 16));
>> +        break;
>> +
>> +    case 0x1:    /* l.macrc */
>> +        LOG_DIS("l.macrc  r%d\n", rd);
>> +        tcg_gen_mov_tl(cpu_R[rd], maclo);
>> +        tcg_gen_movi_tl(maclo, 0x0);
>> +        tcg_gen_movi_tl(machi, 0x0);
>> +        break;
>> +
>> +    default:
>> +        gen_illegal_exception(dc);
>> +        break;
>> +    }
>> +}
>> +
>> +static void dec_comp(DisasContext *dc, uint32_t insn)
>> +{
>> +    uint32_t op0;
>> +    uint32_t ra, rb;
>> +
>> +    op0 = field(insn, 21, 5);
>> +    ra = field(insn, 16, 5);
>> +    rb = field(insn, 11, 5);
>> +
>> +    tcg_gen_movi_i32(env_btaken, 0x0);
>> +    /* unsigned integers  */
>> +    tcg_gen_ext32u_tl(cpu_R[ra], cpu_R[ra]);
>> +    tcg_gen_ext32u_tl(cpu_R[rb], cpu_R[rb]);
>> +
>> +    switch (op0) {
>> +    case 0x0:    /* l.sfeq */
>> +        LOG_DIS("l.sfeq  r%d, r%d\n", ra, rb);
>> +        tcg_gen_setcond_tl(TCG_COND_EQ, env_btaken, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x1:    /* l.sfne */
>> +        LOG_DIS("l.sfne  r%d, r%d\n", ra, rb);
>> +        tcg_gen_setcond_tl(TCG_COND_NE, env_btaken, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x2:    /* l.sfgtu */
>> +        LOG_DIS("l.sfgtu  r%d, r%d\n", ra, rb);
>> +        tcg_gen_setcond_tl(TCG_COND_GTU, env_btaken, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x3:    /* l.sfgeu */
>> +        LOG_DIS("l.sfgeu  r%d, r%d\n", ra, rb);
>> +        tcg_gen_setcond_tl(TCG_COND_GEU, env_btaken, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x4:    /* l.sfltu */
>> +        LOG_DIS("l.sfltu  r%d, r%d\n", ra, rb);
>> +        tcg_gen_setcond_tl(TCG_COND_LTU, env_btaken, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x5:    /* l.sfleu */
>> +        LOG_DIS("l.sfleu  r%d, r%d\n", ra, rb);
>> +        tcg_gen_setcond_tl(TCG_COND_LEU, env_btaken, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0xa:    /* l.sfgts */
>> +        LOG_DIS("l.sfgts  r%d, r%d\n", ra, rb);
>> +        tcg_gen_setcond_tl(TCG_COND_GT, env_btaken, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0xb:    /* l.sfges */
>> +        LOG_DIS("l.sfges  r%d, r%d\n", ra, rb);
>> +        tcg_gen_setcond_tl(TCG_COND_GE, env_btaken, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0xc:    /* l.sflts */
>> +        LOG_DIS("l.sflts  r%d, r%d\n", ra, rb);
>> +        tcg_gen_setcond_tl(TCG_COND_LT, env_btaken, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0xd:    /* l.sfles */
>> +        LOG_DIS("l.sfles  r%d, r%d\n", ra, rb);
>> +        tcg_gen_setcond_tl(TCG_COND_LE, env_btaken, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    default:
>> +        gen_illegal_exception(dc);
>> +        break;
>> +    }
>> +    wb_SR_F();
>> +}
>> +
>> +static void dec_compi(DisasContext *dc, uint32_t insn)
>> +{
>> +    uint32_t op0;
>> +    uint32_t ra, I16;
>> +
>> +    op0 = field(insn, 21, 5);
>> +    ra = field(insn, 16, 5);
>> +    I16 = field(insn, 0, 16);
>> +
>> +    tcg_gen_movi_i32(env_btaken, 0x0);
>> +    I16 = sign_extend(I16, 16);
>> +
>> +    switch (op0) {
>> +    case 0x0:    /* l.sfeqi */
>> +        LOG_DIS("l.sfeqi  r%d, %d\n", ra, I16);
>> +        tcg_gen_setcondi_tl(TCG_COND_EQ, env_btaken, cpu_R[ra], I16);
>> +        break;
>> +
>> +    case 0x1:    /* l.sfnei */
>> +        LOG_DIS("l.sfnei  r%d, %d\n", ra, I16);
>> +        tcg_gen_setcondi_tl(TCG_COND_NE, env_btaken, cpu_R[ra], I16);
>> +        break;
>> +
>> +    case 0x2:    /* l.sfgtui */
>> +        LOG_DIS("l.sfgtui  r%d, %d\n", ra, I16);
>> +        tcg_gen_setcondi_tl(TCG_COND_GTU, env_btaken, cpu_R[ra], I16);
>> +        break;
>> +
>> +    case 0x3:    /* l.sfgeui */
>> +        LOG_DIS("l.sfgeui  r%d, %d\n", ra, I16);
>> +        tcg_gen_setcondi_tl(TCG_COND_GEU, env_btaken, cpu_R[ra], I16);
>> +        break;
>> +
>> +    case 0x4:    /* l.sfltui */
>> +        LOG_DIS("l.sfltui  r%d, %d\n", ra, I16);
>> +        tcg_gen_setcondi_tl(TCG_COND_LTU, env_btaken, cpu_R[ra], I16);
>> +        break;
>> +
>> +    case 0x5:    /* l.sfleui */
>> +        LOG_DIS("l.sfleui  r%d, %d\n", ra, I16);
>> +        tcg_gen_setcondi_tl(TCG_COND_LEU, env_btaken, cpu_R[ra], I16);
>> +        break;
>> +
>> +    case 0xa:    /* l.sfgtsi */
>> +        LOG_DIS("l.sfgtsi  r%d, %d\n", ra, I16);
>> +        tcg_gen_setcondi_tl(TCG_COND_GT, env_btaken, cpu_R[ra], I16);
>> +        break;
>> +
>> +    case 0xb:    /* l.sfgesi */
>> +        LOG_DIS("l.sfgesi  r%d, %d\n", ra, I16);
>> +        tcg_gen_setcondi_tl(TCG_COND_GE, env_btaken, cpu_R[ra], I16);
>> +        break;
>> +
>> +    case 0xc:    /* l.sfltsi */
>> +        LOG_DIS("l.sfltsi  r%d, %d\n", ra, I16);
>> +        tcg_gen_setcondi_tl(TCG_COND_LT, env_btaken, cpu_R[ra], I16);
>> +        break;
>> +
>> +    case 0xd:    /* l.sflesi */
>> +        LOG_DIS("l.sflesi  r%d, %d\n", ra, I16);
>> +        tcg_gen_setcondi_tl(TCG_COND_LE, env_btaken, cpu_R[ra], I16);
>> +        break;
>> +
>> +    default:
>> +        gen_illegal_exception(dc);
>> +        break;
>> +    }
>> +    wb_SR_F();
>> +}
>> +
>> +static void dec_sys(DisasContext *dc, uint32_t insn)
>> +{
>> +    uint32_t op0;
>> +    /*uint32_t K16;*/
>> +    op0 = field(insn, 16, 8);
>> +    /*K16 = field(insn, 0, 16);*/
>> +
>> +    switch (op0) {
>> +    case 0x000:    /* l.sys */
>> +        /*LOG_DIS("l.sys %d\n", K16);*/
>
> Why commented out?

When I build QEMU, I got a error msg like "unused var K16, treat
warnings as errors".
I didn't find a better way to handle it, so, commented it.

>
>> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
>> +        gen_exception(dc, EXCP_SYSCALL);
>> +        dc->is_jmp = DISAS_UPDATE;
>> +        break;
>> +
>> +    case 0x100:    /* l.trap */
>> +        /*LOG_DIS("l.trap %d\n", K16);*/
>
> Ditto
>

And, commented it here.

>> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
>> +        gen_exception(dc, EXCP_TRAP);
>> +        break;
>> +
>> +    case 0x300:    /* l.csync */
>> +        LOG_DIS("l.csync\n");
>> +        break;
>> +
>> +    case 0x200:    /* l.msync */
>> +        LOG_DIS("l.msync\n");
>> +        break;
>> +
>> +    case 0x270:    /* l.psync */
>> +        LOG_DIS("l.psync\n");
>> +        break;
>> +
>> +    default:
>> +        gen_illegal_exception(dc);
>> +        break;
>> +    }
>> +}
>> +
>> +static void dec_float(DisasContext *dc, uint32_t insn)
>> +{
>> +    uint32_t op0;
>> +    uint32_t ra, rb, rd;
>> +    op0 = field(insn, 0, 8);
>> +    ra = field(insn, 16, 5);
>> +    rb = field(insn, 11, 5);
>> +    rd = field(insn, 21, 5);
>> +
>> +    switch (op0) {
>> +    case 0x00:    /* lf.add.s */
>> +        LOG_DIS("lf.add.s r%d, r%d, r%d\n", rd, ra, rb);
>> +        gen_helper_float_add_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x01:    /* lf.sub.s */
>> +        LOG_DIS("lf.sub.s r%d, r%d, r%d\n", rd, ra, rb);
>> +        gen_helper_float_sub_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +
>> +    case 0x02:    /* lf.mul.s */
>> +        LOG_DIS("lf.mul.s r%d, r%d, r%d\n", rd, ra, rb);
>> +        if (ra != 0 && rb != 0) {
>> +            gen_helper_float_mul_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        } else {
>> +            tcg_gen_ori_tl(fpcsr, fpcsr, FPCSR_ZF);
>> +            tcg_gen_movi_i32(cpu_R[rd], 0x0);
>> +        }
>> +        break;
>> +
>> +    case 0x03:    /* lf.div.s */
>> +        LOG_DIS("lf.div.s r%d, r%d, r%d\n", rd, ra, rb);
>> +        gen_helper_float_div_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x04:    /* lf.itof.s */
>> +        LOG_DIS("lf.itof r%d, r%d\n", rd, ra);
>> +        gen_helper_itofs(cpu_R[rd], cpu_env, cpu_R[ra]);
>> +        break;
>> +
>> +    case 0x05:    /* lf.ftoi.s */
>> +        LOG_DIS("lf.ftoi r%d, r%d\n", rd, ra);
>> +        gen_helper_ftois(cpu_R[rd], cpu_env, cpu_R[ra]);
>> +        break;
>> +
>> +    case 0x06:    /* lf.rem.s */
>> +        LOG_DIS("lf.rem.s r%d, r%d, r%d\n", rd, ra, rb);
>> +        gen_helper_float_rem_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x07:    /* lf.madd.s */
>> +        LOG_DIS("lf.madd.s r%d, r%d, r%d\n", rd, ra, rb);
>> +        gen_helper_float_muladd_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x08:    /* lf.sfeq.s */
>> +        LOG_DIS("lf.sfeq.s r%d, r%d\n", ra, rb);
>> +        gen_helper_float_eq_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x09:    /* lf.sfne.s */
>> +        LOG_DIS("lf.sfne.s r%d, r%d\n", ra, rb);
>> +        gen_helper_float_ne_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x0a:    /* lf.sfgt.s */
>> +        LOG_DIS("lf.sfgt.s r%d, r%d\n", ra, rb);
>> +        gen_helper_float_gt_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x0b:    /* lf.sfge.s */
>> +        LOG_DIS("lf.sfge.s r%d, r%d\n", ra, rb);
>> +        gen_helper_float_ge_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x0c:    /* lf.sflt.s */
>> +        LOG_DIS("lf.sflt.s r%d, r%d\n", ra, rb);
>> +        gen_helper_float_lt_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x0d:    /* lf.sfle.s */
>> +        LOG_DIS("lf.sfle.s r%d, r%d\n", ra, rb);
>> +        gen_helper_float_le_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +#ifdef TARGET_OPENRISC64
>> +    case 0x10:    /* lf.add.d */
>> +        LOG_DIS("lf.add.d r%d, r%d, r%d\n", rd, ra, rb);
>> +        check_of64s(dc);
>> +        gen_helper_float_add_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x11:    /* lf.sub.d */
>> +        LOG_DIS("lf.sub.d r%d, r%d, r%d\n", rd, ra, rb);
>> +        check_of64s(dc);
>> +        gen_helper_float_sub_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x12:    /* lf.mul.d */
>> +        LOG_DIS("lf.mul.d r%d, r%d, r%d\n", rd, ra, rb);
>> +        check_of64s(dc);
>> +        if (ra != 0 && rb != 0) {
>> +            gen_helper_float_mul_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        } else {
>> +            tcg_gen_ori_tl(fpcsr, fpcsr, FPCSR_ZF);
>> +            tcg_gen_movi_i64(cpu_R[rd], 0x0);
>> +        }
>> +        break;
>> +
>> +    case 0x13:    /* lf.div.d */
>> +        LOG_DIS("lf.div.d r%d, r%d, r%d\n", rd, ra, rb);
>> +        check_of64s(dc);
>> +        gen_helper_float_div_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x14:    /* lf.itof.d */
>> +        LOG_DIS("lf.itof r%d, r%d\n", rd, ra);
>> +        check_of64s(dc);
>> +        gen_helper_itofd(cpu_R[rd], cpu_env, cpu_R[ra]);
>> +        break;
>> +
>> +    case 0x15:    /* lf.ftoi.d */
>> +        LOG_DIS("lf.ftoi r%d, r%d\n", rd, ra);
>> +        check_of64s(dc);
>> +        gen_helper_ftoid(cpu_R[rd], cpu_env, cpu_R[ra]);
>> +        break;
>> +
>> +    case 0x16:    /* lf.rem.d */
>> +        LOG_DIS("lf.rem.d r%d, r%d, r%d\n", rd, ra, rb);
>> +        check_of64s(dc);
>> +        gen_helper_float_rem_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x17:    /* lf.madd.d */
>> +        LOG_DIS("lf.madd.d r%d, r%d, r%d\n", rd, ra, rb);
>> +        check_of64s(dc);
>> +        gen_helper_float_muladd_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x18:    /* lf.sfeq.d */
>> +        LOG_DIS("lf.sfeq.d r%d, r%d\n", ra, rb);
>> +        check_of64s(dc);
>> +        gen_helper_float_eq_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x1a:    /* lf.sfgt.d */
>> +        LOG_DIS("lf.sfgt.d r%d, r%d\n", ra, rb);
>> +        check_of64s(dc);
>> +        gen_helper_float_gt_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x1b:    /* lf.sfge.d */
>> +        LOG_DIS("lf.sfge.d r%d, r%d\n", ra, rb);
>> +        check_of64s(dc);
>> +        gen_helper_float_ge_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x19:    /* lf.sfne.d */
>> +        LOG_DIS("lf.sfne.d r%d, r%d\n", ra, rb);
>> +        check_of64s(dc);
>> +        gen_helper_float_ne_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x1c:    /* lf.sflt.d */
>> +        LOG_DIS("lf.sflt.d r%d, r%d\n", ra, rb);
>> +        check_of64s(dc);
>> +        gen_helper_float_lt_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +
>> +    case 0x1d:    /* lf.sfle.d */
>> +        LOG_DIS("lf.sfle.d r%d, r%d\n", ra, rb);
>> +        check_of64s(dc);
>> +        gen_helper_float_le_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]);
>> +        break;
>> +#endif
>> +
>> +    default:
>> +        gen_illegal_exception(dc);
>> +        break;
>> +    }
>> +    wb_SR_F();
>> +}
>> +
>> +static void disas_openrisc_insn(DisasContext *dc, OpenRISCCPU *cpu)
>> +{
>> +    uint32_t op0;
>> +    uint32_t insn;
>> +    insn = cpu_ldl_code(&cpu->env, dc->pc);
>> +    op0 = field(insn, 26, 6);
>> +
>> +    switch (op0) {
>> +    case 0x06:
>> +        dec_M(dc, insn);
>> +        break;
>> +
>> +    case 0x08:
>> +        dec_sys(dc, insn);
>> +        break;
>> +
>> +    case 0x2e:
>> +        dec_logic(dc, insn);
>> +        break;
>> +
>> +    case 0x2f:
>> +        dec_compi(dc, insn);
>> +        break;
>> +
>> +    case 0x31:
>> +        dec_mac(dc, insn);
>> +        break;
>> +
>> +    case 0x32:
>> +        dec_float(dc, insn);
>> +        break;
>> +
>> +    case 0x38:
>> +        dec_calc(dc, insn);
>> +        break;
>> +
>> +    case 0x39:
>> +        dec_comp(dc, insn);
>> +        break;
>> +
>> +    default:
>> +        dec_misc(dc, insn);
>> +        break;
>> +    }
>> +}
>> +
>> +static void check_breakpoint(OpenRISCCPU *cpu, DisasContext *dc)
>> +{
>> +    CPUBreakpoint *bp;
>> +
>> +    if (unlikely(!QTAILQ_EMPTY(&cpu->env.breakpoints))) {
>> +        QTAILQ_FOREACH(bp, &cpu->env.breakpoints, entry) {
>> +            if (bp->pc == dc->pc) {
>> +                tcg_gen_movi_tl(cpu_pc, dc->pc);
>> +                gen_exception(dc, EXCP_DEBUG);
>> +                dc->is_jmp = DISAS_UPDATE;
>> +            }
>> +        }
>> +    }
>>  }
>>
>>  static inline void gen_intermediate_code_internal(OpenRISCCPU *cpu,
>>                                                    TranslationBlock *tb,
>>                                                    int search_pc)
>>  {
>> +    struct DisasContext ctx, *dc = &ctx;
>> +    uint16_t *gen_opc_end;
>> +    uint32_t pc_start;
>> +    int j, k;
>> +    uint32_t next_page_start;
>> +    int num_insns;
>> +    int max_insns;
>> +
>> +    qemu_log_try_set_file(stderr);
>> +
>> +    pc_start = tb->pc;
>> +    dc->tb = tb;
>> +
>> +    gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
>> +    dc->is_jmp = DISAS_NEXT;
>> +    dc->ppc = pc_start;
>> +    dc->pc = pc_start;
>> +    dc->flags = cpu->env.cpucfgr;
>> +    dc->mem_idx = cpu_mmu_index(&cpu->env);
>> +    dc->synced_flags = dc->tb_flags = tb->flags;
>> +    dc->delayed_branch = !!(dc->tb_flags & D_FLAG);
>> +    dc->singlestep_enabled = cpu->env.singlestep_enabled;
>> +    if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
>> +        qemu_log("-----------------------------------------\n");
>> +        log_cpu_state(&cpu->env, 0);
>> +    }
>> +
>> +    next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
>> +    k = -1;
>> +    num_insns = 0;
>> +    max_insns = tb->cflags & CF_COUNT_MASK;
>> +
>> +    if (max_insns == 0) {
>> +        max_insns = CF_COUNT_MASK;
>> +    }
>> +
>> +    gen_icount_start();
>> +
>> +    do {
>> +        check_breakpoint(cpu, dc);
>> +        if (search_pc) {
>> +            j = gen_opc_ptr - gen_opc_buf;
>> +            if (k < j) {
>> +                k++;
>> +                while (k < j) {
>> +                    gen_opc_instr_start[k++] = 0;
>> +                }
>> +            }
>> +            gen_opc_pc[k] = dc->pc;
>> +            gen_opc_instr_start[k] = 1;
>> +            gen_opc_icount[k] = num_insns;
>> +        }
>> +
>> +        if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP))) {
>> +            tcg_gen_debug_insn_start(dc->pc);
>> +        }
>> +
>> +        if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
>> +            gen_io_start();
>> +        }
>> +        dc->ppc = dc->pc - 4;
>> +        dc->npc = dc->pc + 4;
>> +        tcg_gen_movi_tl(cpu_ppc, dc->ppc);
>> +        tcg_gen_movi_tl(cpu_npc, dc->npc);
>> +        disas_openrisc_insn(dc, cpu);
>> +        dc->pc = dc->npc;
>> +        num_insns++;
>> +        /* delay slot */
>> +        if (dc->delayed_branch) {
>> +            dc->delayed_branch--;
>> +            if (!dc->delayed_branch) {
>> +                dc->tb_flags &= ~D_FLAG;
>> +                gen_sync_flags(dc);
>> +                tcg_gen_mov_tl(cpu_pc, jmp_pc);
>> +                tcg_gen_mov_tl(cpu_npc, jmp_pc);
>> +                tcg_gen_movi_tl(jmp_pc, 0);
>> +                tcg_gen_exit_tb(0);
>> +                dc->is_jmp = DISAS_JUMP;
>> +                break;
>> +            }
>> +        }
>> +    } while (!dc->is_jmp
>> +             && gen_opc_ptr < gen_opc_end
>> +             && !cpu->env.singlestep_enabled
>> +             && !singlestep
>> +             && (dc->pc < next_page_start)
>> +             && num_insns < max_insns);
>> +
>> +    if (tb->cflags & CF_LAST_IO) {
>> +        gen_io_end();
>> +    }
>> +    if (dc->is_jmp == DISAS_NEXT) {
>> +        dc->is_jmp = DISAS_UPDATE;
>> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
>> +    }
>> +    if (unlikely(cpu->env.singlestep_enabled)) {
>> +        if (dc->is_jmp == DISAS_NEXT) {
>> +            tcg_gen_movi_tl(cpu_pc, dc->pc);
>> +        }
>> +        gen_exception(dc, EXCP_DEBUG);
>> +    } else {
>> +        switch (dc->is_jmp) {
>> +        case DISAS_NEXT:
>> +            gen_goto_tb(dc, 0, dc->pc);
>> +            break;
>> +        default:
>> +        case DISAS_JUMP:
>> +            break;
>> +        case DISAS_UPDATE:
>> +            /* indicate that the hash table must be used
>> +               to find the next TB */
>> +            tcg_gen_exit_tb(0);
>> +            break;
>> +        case DISAS_TB_JUMP:
>> +            /* nothing more to generate */
>> +            break;
>> +        }
>> +    }
>> +
>> +    gen_icount_end(tb, num_insns);
>> +    *gen_opc_ptr = INDEX_op_end;
>> +    if (search_pc) {
>> +        j = gen_opc_ptr - gen_opc_buf;
>> +        k++;
>> +        while (k <= j) {
>> +            gen_opc_instr_start[k++] = 0;
>> +        }
>> +    } else {
>> +        tb->size = dc->pc - pc_start;
>> +        tb->icount = num_insns;
>> +    }
>> +
>> +#ifdef DEBUG_DISAS
>> +    if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
>> +        qemu_log("\n");
>> +        log_target_disas(pc_start, dc->pc - pc_start, 0);
>> +        qemu_log("\nisize=%d osize=%td\n",
>> +            dc->pc - pc_start, gen_opc_ptr - gen_opc_buf);
>> +    }
>> +#endif
>>  }
>>
>>  void gen_intermediate_code(CPUOpenRISCState *env, struct TranslationBlock *tb)
>> --
>> 1.7.9.5
>>
>>

Regards,
Jia.

On Wed, Jul 4, 2012 at 10:23 AM, Jia Liu <proljc@gmail.com> wrote:
> Hi Blue,
>
> On Wed, Jul 4, 2012 at 2:48 AM, Blue Swirl <blauwirbel@gmail.com> wrote:
>> On Sun, Jul 1, 2012 at 2:45 AM, Jia Liu <proljc@gmail.com> wrote:
>>> +    switch (op0) {
>>> +    case 0x00:    /* l.j */
>>> +        LOG_DIS("l.j %d\n", N26);
>>> +    case 0x01:    /* l.jal */
>>> +        LOG_DIS("l.jal %d\n", N26);
>>> +    case 0x03:    /* l.bnf */
>>> +        LOG_DIS("l.bnf %d\n", N26);
>>> +    case 0x04:    /* l.bf */
>>> +        LOG_DIS("l.bf %d\n", N26);
>>> +
>>> +        gen_jump(dc, N26, 0, op0);
>>
>> The cases 0x00 to 0x03 will fall through to this case, calling LOG_DIS
>> one to four times.
>
> Sorry, I can't find a better path. Is this code OK?
>
>     switch (op0) {
>     case 0x00:    /* l.j */
>     case 0x01:    /* l.jal */
>     case 0x03:    /* l.bnf */
>     case 0x04:    /* l.bf */
>         LOG_DIS("l.j/l.jal/l.bnf/l.bf %d\n", N26);
>
>         gen_jump(dc, N26, 0, op0);
>

or is this code OK?

    switch (op0) {
    case 0x00:    /* l.j */
        LOG_DIS("l.j %d\n", N26);
        gen_jump(dc, N26, 0, op0);
        break;
    case 0x01:    /* l.jal */
        LOG_DIS("l.jal %d\n", N26);
        gen_jump(dc, N26, 0, op0);
        break;
    case 0x03:    /* l.bnf */
        LOG_DIS("l.bnf %d\n", N26);
        gen_jump(dc, N26, 0, op0);
        break;
    case 0x04:    /* l.bf */
        LOG_DIS("l.bf %d\n", N26);
        gen_jump(dc, N26, 0, op0);
        break;


>>> +
>>> +    case 0x11:    /* l.jr */
>>> +        LOG_DIS("l.jr r%d\n", rb);
>>> +    case 0x12:    /* l.jalr */
>>> +        LOG_DIS("l.jalr r%d\n", rb);
>>> +
>>> +        gen_jump(dc, 0, rb, op0);
>>
>> Also here.
>>
>
> And, this?
>
     case 0x11:    /* l.jr */
         gen_jump(dc, 0, rb, op0);
         break;
     case 0x12:    /* l.jalr */
         LOG_DIS("l.jr r%d\n", rb);
         gen_jump(dc, 0, rb, op0);
         break;

>>> +static void dec_sys(DisasContext *dc, uint32_t insn)
>>> +{
>>> +    uint32_t op0;
>>> +    /*uint32_t K16;*/
>>> +    op0 = field(insn, 16, 8);
>>> +    /*K16 = field(insn, 0, 16);*/
>>> +
>>> +    switch (op0) {
>>> +    case 0x000:    /* l.sys */
>>> +        /*LOG_DIS("l.sys %d\n", K16);*/
>>
>> Why commented out?
>
> When I build QEMU, I got a error msg like "unused var K16, treat
> warnings as errors".
> I didn't find a better way to handle it, so, commented it.
>
>>
>>> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
>>> +        gen_exception(dc, EXCP_SYSCALL);
>>> +        dc->is_jmp = DISAS_UPDATE;
>>> +        break;
>>> +
>>> +    case 0x100:    /* l.trap */
>>> +        /*LOG_DIS("l.trap %d\n", K16);*/
>>
>> Ditto
>>
>
> And, commented it here.
>
>>> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
>>> +        gen_exception(dc, EXCP_TRAP);
>>> +        break;
>>> +
>
> Regards,
> Jia.


Regards,
Jia.

On Wed, Jul 4, 2012 at 11:59 PM, Jia Liu <proljc@gmail.com> wrote:
> On Wed, Jul 4, 2012 at 10:23 AM, Jia Liu <proljc@gmail.com> wrote:
>> Hi Blue,
>>
>> On Wed, Jul 4, 2012 at 2:48 AM, Blue Swirl <blauwirbel@gmail.com> wrote:
>>> On Sun, Jul 1, 2012 at 2:45 AM, Jia Liu <proljc@gmail.com> wrote:
>>>> +    switch (op0) {
>>>> +    case 0x00:    /* l.j */
>>>> +        LOG_DIS("l.j %d\n", N26);
>>>> +    case 0x01:    /* l.jal */
>>>> +        LOG_DIS("l.jal %d\n", N26);
>>>> +    case 0x03:    /* l.bnf */
>>>> +        LOG_DIS("l.bnf %d\n", N26);
>>>> +    case 0x04:    /* l.bf */
>>>> +        LOG_DIS("l.bf %d\n", N26);
>>>> +
>>>> +        gen_jump(dc, N26, 0, op0);
>>>
>>> The cases 0x00 to 0x03 will fall through to this case, calling LOG_DIS
>>> one to four times.
>>
>> Sorry, I can't find a better path. Is this code OK?
>>
>>     switch (op0) {
>>     case 0x00:    /* l.j */
>>     case 0x01:    /* l.jal */
>>     case 0x03:    /* l.bnf */
>>     case 0x04:    /* l.bf */
>>         LOG_DIS("l.j/l.jal/l.bnf/l.bf %d\n", N26);
>>
>>         gen_jump(dc, N26, 0, op0);
>>
>
> or is this code OK?
>
>     switch (op0) {
>     case 0x00:    /* l.j */
>         LOG_DIS("l.j %d\n", N26);
>         gen_jump(dc, N26, 0, op0);
>         break;
>     case 0x01:    /* l.jal */
>         LOG_DIS("l.jal %d\n", N26);
>         gen_jump(dc, N26, 0, op0);
>         break;
>     case 0x03:    /* l.bnf */
>         LOG_DIS("l.bnf %d\n", N26);
>         gen_jump(dc, N26, 0, op0);
>         break;
>     case 0x04:    /* l.bf */
>         LOG_DIS("l.bf %d\n", N26);
>         gen_jump(dc, N26, 0, op0);
>         break;

Yes, with N26 defined only when LOG_DIS does something (see below).

>
>
>>>> +
>>>> +    case 0x11:    /* l.jr */
>>>> +        LOG_DIS("l.jr r%d\n", rb);
>>>> +    case 0x12:    /* l.jalr */
>>>> +        LOG_DIS("l.jalr r%d\n", rb);
>>>> +
>>>> +        gen_jump(dc, 0, rb, op0);
>>>
>>> Also here.
>>>
>>
>> And, this?
>>
>      case 0x11:    /* l.jr */

Now there's no LOG_DIS() line.

>          gen_jump(dc, 0, rb, op0);
>          break;
>      case 0x12:    /* l.jalr */
>          LOG_DIS("l.jr r%d\n", rb);
>          gen_jump(dc, 0, rb, op0);
>          break;
>
>>>> +static void dec_sys(DisasContext *dc, uint32_t insn)
>>>> +{
>>>> +    uint32_t op0;
>>>> +    /*uint32_t K16;*/
>>>> +    op0 = field(insn, 16, 8);
>>>> +    /*K16 = field(insn, 0, 16);*/
>>>> +
>>>> +    switch (op0) {
>>>> +    case 0x000:    /* l.sys */
>>>> +        /*LOG_DIS("l.sys %d\n", K16);*/
>>>
>>> Why commented out?
>>
>> When I build QEMU, I got a error msg like "unused var K16, treat
>> warnings as errors".
>> I didn't find a better way to handle it, so, commented it.

This can be avoided by adjusting those variable definitions which are
only used by LOG_DIS() so that they are only defined when LOG_DIS
needs them:
#ifdef OPENRISC_DISAS
  int K16, N26;
#endif

>>
>>>
>>>> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
>>>> +        gen_exception(dc, EXCP_SYSCALL);
>>>> +        dc->is_jmp = DISAS_UPDATE;
>>>> +        break;
>>>> +
>>>> +    case 0x100:    /* l.trap */
>>>> +        /*LOG_DIS("l.trap %d\n", K16);*/
>>>
>>> Ditto
>>>
>>
>> And, commented it here.
>>
>>>> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
>>>> +        gen_exception(dc, EXCP_TRAP);
>>>> +        break;
>>>> +
>>
>> Regards,
>> Jia.
>
>
> Regards,
> Jia.

Hi Blue,

On Fri, Jul 6, 2012 at 2:45 AM, Blue Swirl <blauwirbel@gmail.com> wrote:
> On Wed, Jul 4, 2012 at 11:59 PM, Jia Liu <proljc@gmail.com> wrote:
>> On Wed, Jul 4, 2012 at 10:23 AM, Jia Liu <proljc@gmail.com> wrote:
>>> Hi Blue,
>>>
>>> On Wed, Jul 4, 2012 at 2:48 AM, Blue Swirl <blauwirbel@gmail.com> wrote:
>>>> On Sun, Jul 1, 2012 at 2:45 AM, Jia Liu <proljc@gmail.com> wrote:
>>>>> +    switch (op0) {
>>>>> +    case 0x00:    /* l.j */
>>>>> +        LOG_DIS("l.j %d\n", N26);
>>>>> +    case 0x01:    /* l.jal */
>>>>> +        LOG_DIS("l.jal %d\n", N26);
>>>>> +    case 0x03:    /* l.bnf */
>>>>> +        LOG_DIS("l.bnf %d\n", N26);
>>>>> +    case 0x04:    /* l.bf */
>>>>> +        LOG_DIS("l.bf %d\n", N26);
>>>>> +
>>>>> +        gen_jump(dc, N26, 0, op0);
>>>>
>>>> The cases 0x00 to 0x03 will fall through to this case, calling LOG_DIS
>>>> one to four times.
>>>
>>> Sorry, I can't find a better path. Is this code OK?
>>>
>>>     switch (op0) {
>>>     case 0x00:    /* l.j */
>>>     case 0x01:    /* l.jal */
>>>     case 0x03:    /* l.bnf */
>>>     case 0x04:    /* l.bf */
>>>         LOG_DIS("l.j/l.jal/l.bnf/l.bf %d\n", N26);
>>>
>>>         gen_jump(dc, N26, 0, op0);
>>>
>>
>> or is this code OK?
>>
>>     switch (op0) {
>>     case 0x00:    /* l.j */
>>         LOG_DIS("l.j %d\n", N26);
>>         gen_jump(dc, N26, 0, op0);
>>         break;
>>     case 0x01:    /* l.jal */
>>         LOG_DIS("l.jal %d\n", N26);
>>         gen_jump(dc, N26, 0, op0);
>>         break;
>>     case 0x03:    /* l.bnf */
>>         LOG_DIS("l.bnf %d\n", N26);
>>         gen_jump(dc, N26, 0, op0);
>>         break;
>>     case 0x04:    /* l.bf */
>>         LOG_DIS("l.bf %d\n", N26);
>>         gen_jump(dc, N26, 0, op0);
>>         break;
>
> Yes, with N26 defined only when LOG_DIS does something (see below).
>
>>
>>
>>>>> +
>>>>> +    case 0x11:    /* l.jr */
>>>>> +        LOG_DIS("l.jr r%d\n", rb);
>>>>> +    case 0x12:    /* l.jalr */
>>>>> +        LOG_DIS("l.jalr r%d\n", rb);
>>>>> +
>>>>> +        gen_jump(dc, 0, rb, op0);
>>>>
>>>> Also here.
>>>>
>>>
>>> And, this?
>>>
>>      case 0x11:    /* l.jr */
>
> Now there's no LOG_DIS() line.

Oh! I was too careless! It shouldn't a LOG_DIS() here!
Thank you very much!

>
>>          gen_jump(dc, 0, rb, op0);
>>          break;
>>      case 0x12:    /* l.jalr */
>>          LOG_DIS("l.jr r%d\n", rb);
>>          gen_jump(dc, 0, rb, op0);
>>          break;
>>
>>>>> +static void dec_sys(DisasContext *dc, uint32_t insn)
>>>>> +{
>>>>> +    uint32_t op0;
>>>>> +    /*uint32_t K16;*/
>>>>> +    op0 = field(insn, 16, 8);
>>>>> +    /*K16 = field(insn, 0, 16);*/
>>>>> +
>>>>> +    switch (op0) {
>>>>> +    case 0x000:    /* l.sys */
>>>>> +        /*LOG_DIS("l.sys %d\n", K16);*/
>>>>
>>>> Why commented out?
>>>
>>> When I build QEMU, I got a error msg like "unused var K16, treat
>>> warnings as errors".
>>> I didn't find a better way to handle it, so, commented it.
>
> This can be avoided by adjusting those variable definitions which are
> only used by LOG_DIS() so that they are only defined when LOG_DIS
> needs them:
> #ifdef OPENRISC_DISAS
>   int K16, N26;
> #endif
>

Thank you very much! This is a very nice way.


>>>
>>>>
>>>>> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
>>>>> +        gen_exception(dc, EXCP_SYSCALL);
>>>>> +        dc->is_jmp = DISAS_UPDATE;
>>>>> +        break;
>>>>> +
>>>>> +    case 0x100:    /* l.trap */
>>>>> +        /*LOG_DIS("l.trap %d\n", K16);*/
>>>>
>>>> Ditto
>>>>
>>>
>>> And, commented it here.
>>>
>>>>> +        tcg_gen_movi_tl(cpu_pc, dc->pc);
>>>>> +        gen_exception(dc, EXCP_TRAP);
>>>>> +        break;
>>>>> +
>>>
>>> Regards,
>>> Jia.
>>
>>
>> Regards,
>> Jia.


Regards,
Jia.