diff options
| author | Aurelien Jarno <aurelien@aurel32.net> | 2017-06-04 22:20:32 +0200 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-06-06 15:25:14 -0700 |
| commit | e22dfdb28dbba83d97ea6b40652ccccd7c60365d (patch) | |
| tree | 275a8d654646572e77dbfa378eb0a5de343c850a /target/s390x/mem_helper.c | |
| parent | 4065ae7634601dfd8be8138fdad5562f798c4f5c (diff) | |
| download | qemu-e22dfdb28dbba83d97ea6b40652ccccd7c60365d.tar.gz | |
target/s390x: implement LOAD PAIR FROM QUADWORD
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <20170604202034.16615-2-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target/s390x/mem_helper.c')
| -rw-r--r-- | target/s390x/mem_helper.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index be89cc4fb4..f48908cecb 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -1665,6 +1665,33 @@ uint64_t HELPER(lra)(CPUS390XState *env, uint64_t addr) } #endif +/* load pair from quadword */ +uint64_t HELPER(lpq)(CPUS390XState *env, uint64_t addr) +{ + uintptr_t ra = GETPC(); + uint64_t hi, lo; + + if (parallel_cpus) { +#ifndef CONFIG_ATOMIC128 + cpu_loop_exit_atomic(ENV_GET_CPU(env), ra); +#else + int mem_idx = cpu_mmu_index(env, false); + TCGMemOpIdx oi = make_memop_idx(MO_TEQ | MO_ALIGN_16, mem_idx); + Int128 v = helper_atomic_ldo_be_mmu(env, addr, oi, ra); + hi = int128_gethi(v); + lo = int128_getlo(v); +#endif + } else { + check_alignment(env, addr, 16, ra); + + hi = cpu_ldq_data_ra(env, addr + 0, ra); + lo = cpu_ldq_data_ra(env, addr + 8, ra); + } + + env->retxl = lo; + return hi; +} + /* Execute instruction. This instruction executes an insn modified with the contents of r1. It does not change the executed instruction in memory; it does not change the program counter. |