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| author | Aurelien Jarno | 2015-06-03 23:09:48 +0200 |
|---|---|---|
| committer | Alexander Graf | 2015-06-05 01:37:59 +0200 |
| commit | 3f4de6756cd87b508b37c7ffa93f7b827832c4eb (patch) | |
| tree | d7f693d208a23f7b1c71bf6fd74425df53265750 /target-s390x | |
| parent | target-s390x: implement TRANSLATE AND TEST instruction (diff) | |
| download | qemu-3f4de6756cd87b508b37c7ffa93f7b827832c4eb.tar.gz qemu-3f4de6756cd87b508b37c7ffa93f7b827832c4eb.tar.xz qemu-3f4de6756cd87b508b37c7ffa93f7b827832c4eb.zip | |
target-s390x: implement TRANSLATE EXTENDED instruction
It is part of the basic zArchitecture instructions.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-s390x')
| -rw-r--r-- | target-s390x/helper.h | 1 | ||||
| -rw-r--r-- | target-s390x/insn-data.def | 2 | ||||
| -rw-r--r-- | target-s390x/mem_helper.c | 39 | ||||
| -rw-r--r-- | target-s390x/translate.c | 9 |
4 files changed, 51 insertions, 0 deletions
diff --git a/target-s390x/helper.h b/target-s390x/helper.h index 48b015eab3..7e048ecb00 100644 --- a/target-s390x/helper.h +++ b/target-s390x/helper.h @@ -77,6 +77,7 @@ DEF_HELPER_FLAGS_3(sqxb, TCG_CALL_NO_WG, i64, env, i64, i64) DEF_HELPER_FLAGS_1(cvd, TCG_CALL_NO_RWG_SE, i64, s32) DEF_HELPER_FLAGS_4(unpk, TCG_CALL_NO_WG, void, env, i32, i64, i64) DEF_HELPER_FLAGS_4(tr, TCG_CALL_NO_WG, void, env, i32, i64, i64) +DEF_HELPER_4(tre, i64, env, i64, i64, i64) DEF_HELPER_4(trt, i32, env, i32, i64, i64) DEF_HELPER_4(cksm, i64, env, i64, i64, i64) DEF_HELPER_FLAGS_5(calc_cc, TCG_CALL_NO_RWG_SE, i32, env, i32, i64, i64, i64) diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def index e401754046..e638b0ba83 100644 --- a/target-s390x/insn-data.def +++ b/target-s390x/insn-data.def @@ -761,6 +761,8 @@ C(0xdc00, TR, SS_a, Z, la1, a2, 0, 0, tr, 0) /* TRANSLATE AND TEST */ C(0xdd00, TRT, SS_a, Z, la1, a2, 0, 0, trt, 0) +/* TRANSLATE EXTENDED */ + C(0xb2a5, TRE, RRE, Z, 0, r2, r1_P, 0, tre, 0) /* UNPACK */ /* Really format SS_b, but we pack both lengths into one argument diff --git a/target-s390x/mem_helper.c b/target-s390x/mem_helper.c index e19e1aa961..30a2a6dfd5 100644 --- a/target-s390x/mem_helper.c +++ b/target-s390x/mem_helper.c @@ -804,6 +804,45 @@ void HELPER(tr)(CPUS390XState *env, uint32_t len, uint64_t array, } } +uint64_t HELPER(tre)(CPUS390XState *env, uint64_t array, + uint64_t len, uint64_t trans) +{ + uint8_t end = env->regs[0] & 0xff; + uint64_t l = len; + uint64_t i; + + if (!(env->psw.mask & PSW_MASK_64)) { + array &= 0x7fffffff; + l = (uint32_t)l; + } + + /* Lest we fail to service interrupts in a timely manner, limit the + amount of work we're willing to do. For now, let's cap at 8k. */ + if (l > 0x2000) { + l = 0x2000; + env->cc_op = 3; + } else { + env->cc_op = 0; + } + + for (i = 0; i < l; i++) { + uint8_t byte, new_byte; + + byte = cpu_ldub_data(env, array + i); + + if (byte == end) { + env->cc_op = 1; + break; + } + + new_byte = cpu_ldub_data(env, trans + byte); + cpu_stb_data(env, array + i, new_byte); + } + + env->retxl = len - i; + return array + i; +} + uint32_t HELPER(trt)(CPUS390XState *env, uint32_t len, uint64_t array, uint64_t trans) { diff --git a/target-s390x/translate.c b/target-s390x/translate.c index 003598df6b..c8ef24a08e 100644 --- a/target-s390x/translate.c +++ b/target-s390x/translate.c @@ -3787,6 +3787,15 @@ static ExitStatus op_tr(DisasContext *s, DisasOps *o) return NO_EXIT; } +static ExitStatus op_tre(DisasContext *s, DisasOps *o) +{ + potential_page_fault(s); + gen_helper_tre(o->out, cpu_env, o->out, o->out2, o->in2); + return_low128(o->out2); + set_cc_static(s); + return NO_EXIT; +} + static ExitStatus op_trt(DisasContext *s, DisasOps *o) { TCGv_i32 l = tcg_const_i32(get_field(s->fields, l1)); |