Signed-off-by: Richard Henderson <r...@twiddle.net>
---
target-s390x/insn-data.def | 4 ++++
target-s390x/misc_helper.c | 6 ++----
target-s390x/translate.c | 35 +++++++++++++++--------------------
3 files changed, 21 insertions(+), 24 deletions(-)
diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def
index 58f2b41..63da5ab 100644
--- a/target-s390x/insn-data.def
+++ b/target-s390x/insn-data.def
@@ -642,6 +642,8 @@
C(0xb206, SCKC, S, Z, 0, m2_64, 0, 0, sckc, 0)
/* SET CPU TIMER */
C(0xb208, SPT, S, Z, 0, m2_64, 0, 0, spt, 0)
+/* SET PREFIX */
+ C(0xb210, SPX, S, Z, 0, m2_32u, 0, 0, spx, 0)
/* SET PSW KEY FROM ADDRESS */
C(0xb20a, SPKA, S, Z, 0, a2, 0, 0, spka, 0)
/* SET SYSTEM MASK */
@@ -660,6 +662,8 @@
C(0xb202, STIDP, S, Z, la2, 0, new, m1_64, stidp, 0)
/* STORE CPU TIMER */
C(0xb209, STPT, S, Z, la2, 0, new, m1_64, stpt, 0)
+/* STORE PREFIX */
+ C(0xb211, STPX, S, Z, la2, 0, new, m1_32, stpx, 0)
/* STORE THEN AND SYSTEM MASK */
C(0xac00, STNSM, SI, Z, la1, 0, new, m1_8, stnsm, 0)
/* STORE THEN OR SYSTEM MASK */
diff --git a/target-s390x/misc_helper.c b/target-s390x/misc_helper.c
index d205259..e604613 100644
--- a/target-s390x/misc_helper.c
+++ b/target-s390x/misc_helper.c
@@ -733,10 +733,8 @@ uint64_t HELPER(diag)(CPUS390XState *env, uint32_t num,
uint64_t mem,
/* Set Prefix */
void HELPER(spx)(CPUS390XState *env, uint64_t a1)
{
- uint32_t prefix;
-
- prefix = cpu_ldl_data(env, a1);
- env->psa = prefix & 0xfffff000;
+ uint32_t prefix = a1 & 0x7fffe000;
+ env->psa = prefix;
qemu_log("prefix: %#x\n", prefix);
tlb_flush_page(env, 0);
tlb_flush_page(env, TARGET_PAGE_SIZE);
diff --git a/target-s390x/translate.c b/target-s390x/translate.c
index f3108f3..6b60de1 100644
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -1030,26 +1030,6 @@ static void disas_b2(DisasContext *s, int op, uint32_t
insn)
LOG_DISAS("disas_b2: op 0x%x r1 %d r2 %d\n", op, r1, r2);
switch (op) {
- case 0x10: /* SPX D2(B2) [S] */
- /* Set Prefix Register */
- check_privileged(s);
- decode_rs(s, insn, &r1, &r3, &b2, &d2);
- tmp = get_address(s, 0, b2, d2);
- potential_page_fault(s);
- gen_helper_spx(cpu_env, tmp);
- tcg_temp_free_i64(tmp);
- break;
- case 0x11: /* STPX D2(B2) [S] */
- /* Store Prefix */
- check_privileged(s);
- decode_rs(s, insn, &r1, &r3, &b2, &d2);
- tmp = get_address(s, 0, b2, d2);
- tmp2 = tcg_temp_new_i64();
- tcg_gen_ld_i64(tmp2, cpu_env, offsetof(CPUS390XState, psa));
- tcg_gen_qemu_st32(tmp2, tmp, get_mem_index(s));
- tcg_temp_free_i64(tmp);
- tcg_temp_free_i64(tmp2);
- break;
case 0x12: /* STAP D2(B2) [S] */
/* Store CPU Address */
check_privileged(s);
@@ -2885,6 +2865,21 @@ static ExitStatus op_stpt(DisasContext *s, DisasOps *o)
return NO_EXIT;
}
+static ExitStatus op_spx(DisasContext *s, DisasOps *o)
+{
+ check_privileged(s);
+ gen_helper_spx(cpu_env, o->in2);
+ return NO_EXIT;
+}
+
+static ExitStatus op_stpx(DisasContext *s, DisasOps *o)
+{
+ check_privileged(s);
+ tcg_gen_ld_i64(o->out, cpu_env, offsetof(CPUS390XState, psa));
+ tcg_gen_andi_i64(o->out, o->out, 0x7fffe000);
+ return NO_EXIT;
+}
+
static ExitStatus op_stnsm(DisasContext *s, DisasOps *o)
{
uint64_t i2 = get_field(s->fields, i2);
--
1.7.11.4
