diff options
Diffstat (limited to 'target/microblaze')
| -rw-r--r-- | target/microblaze/translate.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c index 3fad13c719..cb65d1e129 100644 --- a/target/microblaze/translate.c +++ b/target/microblaze/translate.c @@ -661,7 +661,7 @@ static void dec_barrel(DisasContext *dc) { TCGv t0; unsigned int imm_w, imm_s; - bool s, t, e = false; + bool s, t, e = false, i = false; if ((dc->tb_flags & MSR_EE_FLAG) && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK) @@ -673,6 +673,7 @@ static void dec_barrel(DisasContext *dc) if (dc->type_b) { /* Insert and extract are only available in immediate mode. */ + i = extract32(dc->imm, 15, 1); e = extract32(dc->imm, 14, 1); } s = extract32(dc->imm, 10, 1); @@ -692,6 +693,17 @@ static void dec_barrel(DisasContext *dc) } else { tcg_gen_extract_i32(cpu_R[dc->rd], cpu_R[dc->ra], imm_s, imm_w); } + } else if (i) { + int width = imm_w - imm_s + 1; + + if (imm_w < imm_s) { + /* These inputs have an undefined behavior. */ + qemu_log_mask(LOG_GUEST_ERROR, "bsifi: Bad input w=%d s=%d\n", + imm_w, imm_s); + } else { + tcg_gen_deposit_i32(cpu_R[dc->rd], cpu_R[dc->rd], cpu_R[dc->ra], + imm_s, width); + } } else { t0 = tcg_temp_new(); |