On 07/30/2018 12:12 PM, Aleksandar Markovic wrote:
> +/* Immediate Value Compact Branches */
> +static void gen_compute_imm_branch(DisasContext *ctx, uint32_t opc,
> + int rt, int32_t imm, int32_t offset)
> +{
> + TCGCond cond;
> + int bcond_compute = 0;
> + TCGv t0 = tcg_temp_new();
> + TCGv t1 = tcg_temp_new();
> +
> + if (ctx->hflags & MIPS_HFLAG_BMASK) {
> +#ifdef MIPS_DEBUG_DISAS
> + LOG_DISAS("Branch in delay / forbidden slot at PC 0x" TARGET_FMT_lx
> + "\n", ctx->base.pc_next);
> +#endif
> + generate_exception_end(ctx, EXCP_RI);
> + goto out;
> + }
What is this,
> + ctx->hflags |= MIPS_HFLAG_FBNSLOT;
and this (and several other occurrences), given that forbidden slots have been
removed from the nanomips architecture?
I think perhaps all of your branching code, utilizing the existing expanders,
needs a re-think.
r~
