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>
diff --git a/target-s390x/helper.h b/target-s390x/helper.h
index 48b015e..7e048ec 100644
--- a/target-s390x/helper.h
+++ b/target-s390x/helper.h
@@ -77,6 +77,7 @@
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 e401754..e638b0b 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 e19e1aa..30a2a6d 100644
--- a/target-s390x/mem_helper.c
+++ b/target-s390x/mem_helper.c
@@ -804,6 +804,45 @@
}
}
+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 003598d..c8ef24a 100644
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -3787,6 +3787,15 @@
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));
