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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>
This commit is contained in:
Aurelien Jarno 2015-06-03 23:09:48 +02:00 committed by Alexander Graf
parent 54f0077509
commit 3f4de6756c
4 changed files with 51 additions and 0 deletions
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1
target-s390x/helper.h
View File

@ -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)

2
target-s390x/insn-data.def
View File

@ -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

39
target-s390x/mem_helper.c
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@ -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)
{

9
target-s390x/translate.c
View File

@ -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));