diff options
| -rw-r--r-- | target-arm/translate.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/target-arm/translate.c b/target-arm/translate.c index 70cf1b2..ace6c45 100644 --- a/target-arm/translate.c +++ b/target-arm/translate.c @@ -4096,7 +4096,7 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn) int pairwise; int u; int n; - uint32_t imm; + uint32_t imm, mask; TCGv tmp, tmp2, tmp3, tmp4, tmp5; TCGv_i64 tmp64; @@ -4624,31 +4624,35 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn) switch (size) { case 0: if (op == 4) - imm = 0xff >> -shift; + mask = 0xff >> -shift; else - imm = (uint8_t)(0xff << shift); - imm |= imm << 8; - imm |= imm << 16; + mask = (uint8_t)(0xff << shift); + mask |= mask << 8; + mask |= mask << 16; break; case 1: if (op == 4) - imm = 0xffff >> -shift; + mask = 0xffff >> -shift; else - imm = (uint16_t)(0xffff << shift); - imm |= imm << 16; + mask = (uint16_t)(0xffff << shift); + mask |= mask << 16; break; case 2: - if (op == 4) - imm = 0xffffffffu >> -shift; - else - imm = 0xffffffffu << shift; + if (shift < -31 || shift > 31) { + mask = 0; + } else { + if (op == 4) + mask = 0xffffffffu >> -shift; + else + mask = 0xffffffffu << shift; + } break; default: abort(); } tmp2 = neon_load_reg(rd, pass); - tcg_gen_andi_i32(tmp, tmp, imm); - tcg_gen_andi_i32(tmp2, tmp2, ~imm); + tcg_gen_andi_i32(tmp, tmp, mask); + tcg_gen_andi_i32(tmp2, tmp2, ~mask); tcg_gen_or_i32(tmp, tmp, tmp2); dead_tmp(tmp2); } |