diff options
Diffstat (limited to 'target/s390x/mem_helper.c')
| -rw-r--r-- | target/s390x/mem_helper.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index fa2bfbbf2f..be89cc4fb4 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -1196,6 +1196,51 @@ uint32_t HELPER(trt)(CPUS390XState *env, uint32_t len, uint64_t array, return do_helper_trt(env, len, array, trans, GETPC()); } +/* Translate one/two to one/two */ +uint32_t HELPER(trXX)(CPUS390XState *env, uint32_t r1, uint32_t r2, + uint32_t tst, uint32_t sizes) +{ + uintptr_t ra = GETPC(); + int dsize = (sizes & 1) ? 1 : 2; + int ssize = (sizes & 2) ? 1 : 2; + uint64_t tbl = get_address(env, 1) & ~7; + uint64_t dst = get_address(env, r1); + uint64_t len = get_length(env, r1 + 1); + uint64_t src = get_address(env, r2); + uint32_t cc = 3; + int i; + + check_alignment(env, len, ssize, ra); + + /* Lest we fail to service interrupts in a timely manner, */ + /* limit the amount of work we're willing to do. */ + for (i = 0; i < 0x2000; i++) { + uint16_t sval = cpu_ldusize_data_ra(env, src, ssize, ra); + uint64_t tble = tbl + (sval * dsize); + uint16_t dval = cpu_ldusize_data_ra(env, tble, dsize, ra); + if (dval == tst) { + cc = 1; + break; + } + cpu_stsize_data_ra(env, dst, dval, dsize, ra); + + len -= ssize; + src += ssize; + dst += dsize; + + if (len == 0) { + cc = 0; + break; + } + } + + set_address(env, r1, dst); + set_length(env, r1 + 1, len); + set_address(env, r2, src); + + return cc; +} + void HELPER(cdsg)(CPUS390XState *env, uint64_t addr, uint32_t r1, uint32_t r3) { |