diff options
| -rw-r--r-- | target/sparc/translate.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/target/sparc/translate.c b/target/sparc/translate.c index 655060cd9a..aa6734d54e 100644 --- a/target/sparc/translate.c +++ b/target/sparc/translate.c @@ -2448,8 +2448,31 @@ static void gen_ldstub_asi(DisasContext *dc, TCGv dst, TCGv addr, int insn) gen_ldstub(dc, dst, addr, da.mem_idx); break; default: - /* ??? Should be DAE_invalid_asi. */ - gen_exception(dc, TT_DATA_ACCESS); + /* ??? In theory, this should be raise DAE_invalid_asi. + But the SS-20 roms do ldstuba [%l0] #ASI_M_CTL, %o1. */ + if (parallel_cpus) { + gen_helper_exit_atomic(cpu_env); + } else { + TCGv_i32 r_asi = tcg_const_i32(da.asi); + TCGv_i32 r_mop = tcg_const_i32(MO_UB); + TCGv_i64 s64, t64; + + save_state(dc); + t64 = tcg_temp_new_i64(); + gen_helper_ld_asi(t64, cpu_env, addr, r_asi, r_mop); + + s64 = tcg_const_i64(0xff); + gen_helper_st_asi(cpu_env, addr, s64, r_asi, r_mop); + tcg_temp_free_i64(s64); + tcg_temp_free_i32(r_mop); + tcg_temp_free_i32(r_asi); + + tcg_gen_trunc_i64_tl(dst, t64); + tcg_temp_free_i64(t64); + + /* End the TB. */ + dc->npc = DYNAMIC_PC; + } break; } } |