on qemu we got an aborted error ** ERROR:../target/loongarch/tcg/insn_trans/trans_vec.c.inc:3574:vldi_get_value: code should not be reached Bail out! ERROR:../target/loongarch/tcg/insn_trans/trans_vec.c.inc:3574:vldi_get_value: code should not be reached Aborted (core dumped) bu on 3A600/3A5000 we got a "Illegal instruction" error.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2971 Signed-off-by: Song Gao <gaos...@loongson.cn> --- target/loongarch/tcg/insn_trans/trans_vec.c.inc | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/target/loongarch/tcg/insn_trans/trans_vec.c.inc b/target/loongarch/tcg/insn_trans/trans_vec.c.inc index dff92772ad..9fb72fe914 100644 --- a/target/loongarch/tcg/insn_trans/trans_vec.c.inc +++ b/target/loongarch/tcg/insn_trans/trans_vec.c.inc @@ -3465,7 +3465,7 @@ TRANS(xvmsknz_b, LASX, gen_xx, gen_helper_vmsknz_b) static uint64_t vldi_get_value(DisasContext *ctx, uint32_t imm) { int mode; - uint64_t data, t; + uint64_t data = 0, t; /* * imm bit [11:8] is mode, mode value is 0-12. @@ -3568,19 +3568,27 @@ static uint64_t vldi_get_value(DisasContext *ctx, uint32_t imm) t1 = (b7 << 9) | ((1-b6) << 8) | (b6 ? 0xff : 0); data = (t1 << 54) | (t0 << 48); } - break; default: - generate_exception(ctx, EXCCODE_INE); g_assert_not_reached(); + break; } return data; } +static bool check_vldi_mode(arg_vldi *a) +{ + return (a->imm >>8 & 0xf) <= 12; +} static bool gen_vldi(DisasContext *ctx, arg_vldi *a, uint32_t oprsz) { int sel, vece; uint64_t value; + if (!check_vldi_mode(a)){ + generate_exception(ctx, EXCCODE_INE); + return true; + } + if (!check_vec(ctx, oprsz)) { return true; } -- 2.34.1
