diff options
Diffstat (limited to 'target/s390x/cc_helper.c')
| -rw-r--r-- | target/s390x/cc_helper.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/s390x/cc_helper.c b/target/s390x/cc_helper.c index 44731e4a85..5432aeeed4 100644 --- a/target/s390x/cc_helper.c +++ b/target/s390x/cc_helper.c @@ -417,6 +417,32 @@ static uint32_t cc_calc_vc(uint64_t low, uint64_t high) } } +static uint32_t cc_calc_muls_32(int64_t res) +{ + const int64_t tmp = res >> 31; + + if (!res) { + return 0; + } else if (tmp && tmp != -1) { + return 3; + } else if (res < 0) { + return 1; + } + return 2; +} + +static uint64_t cc_calc_muls_64(int64_t res_high, uint64_t res_low) +{ + if (!res_high && !res_low) { + return 0; + } else if (res_high + (res_low >> 63) != 0) { + return 3; + } else if (res_high < 0) { + return 1; + } + return 2; +} + static uint32_t do_calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst, uint64_t vr) { @@ -484,6 +510,9 @@ static uint32_t do_calc_cc(CPUS390XState *env, uint32_t cc_op, case CC_OP_COMP_64: r = cc_calc_comp_64(dst); break; + case CC_OP_MULS_64: + r = cc_calc_muls_64(src, dst); + break; case CC_OP_ADD_32: r = cc_calc_add_32(src, dst, vr); @@ -512,6 +541,9 @@ static uint32_t do_calc_cc(CPUS390XState *env, uint32_t cc_op, case CC_OP_COMP_32: r = cc_calc_comp_32(dst); break; + case CC_OP_MULS_32: + r = cc_calc_muls_32(dst); + break; case CC_OP_ICM: r = cc_calc_icm(src, dst); |