diff options
Diffstat (limited to 'target-arm/translate-a64.c')
| -rw-r--r-- | target-arm/translate-a64.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c index 8ae68148ef..f2f8443483 100644 --- a/target-arm/translate-a64.c +++ b/target-arm/translate-a64.c @@ -3038,6 +3038,23 @@ static void disas_bitfield(DisasContext *s, uint32_t insn) tcg_gen_sari_i64(tcg_rd, tcg_tmp, ri); goto done; } + } else if (opc == 2) { /* UBFM */ + if (ri == 0) { /* UXTB, UXTH, plus non-canonical AND */ + tcg_gen_andi_i64(tcg_rd, tcg_tmp, bitmask64(si + 1)); + return; + } + if (si == 63 || (si == 31 && ri <= si)) { /* LSR */ + if (si == 31) { + tcg_gen_ext32u_i64(tcg_tmp, tcg_tmp); + } + tcg_gen_shri_i64(tcg_rd, tcg_tmp, ri); + return; + } + if (si + 1 == ri && si != bitsize - 1) { /* LSL */ + int shift = bitsize - 1 - si; + tcg_gen_shli_i64(tcg_rd, tcg_tmp, shift); + goto done; + } } if (opc != 1) { /* SBFM or UBFM */ |