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authorDavid Hildenbrand <david@redhat.com>2017-06-09 15:34:26 +0200
committerRichard Henderson <rth@twiddle.net>2017-06-13 11:09:39 -0700
commit076d4d39b65f50ca1bba3d3c8a8f1cf977c1c3f0 (patch)
tree83b357618c62624cc4baf42094e8c50129b674b7 /target
parentbecf8217deb2afc347d5172d9f30c8a8964b8b27 (diff)
s390x/cpumodel: wire up cpu type + id for TCG
Let's properly expose the CPU type (machine-type number) via "STORE CPU ID" and "STORE SUBSYSTEM INFORMATION". As TCG emulates basic mode, the CPU identification number has the format "Annnnn", whereby A is the CPU address, and n are parts of the CPU serial number (0 for us for now). A specification exception will be injected if the address is not aligned to a double word. Low address protection will not be checked as we're missing some more general support for that. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170609133426.11447-3-david@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target')
-rw-r--r--target/s390x/cpu.h2
-rw-r--r--target/s390x/cpu_models.c8
-rw-r--r--target/s390x/insn-data.def2
-rw-r--r--target/s390x/misc_helper.c9
-rw-r--r--target/s390x/translate.c9
5 files changed, 16 insertions, 14 deletions
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index 2954974dac..a4028fb315 100644
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -149,7 +149,7 @@ typedef struct CPUS390XState {
CPU_COMMON
uint32_t cpu_num;
- uint32_t machine_type;
+ uint64_t cpuid;
uint64_t tod_offset;
uint64_t tod_basetime;
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index b34318f1e3..478bcc604e 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -737,8 +737,6 @@ static inline void apply_cpu_model(const S390CPUModel *model, Error **errp)
if (kvm_enabled()) {
kvm_s390_apply_cpu_model(model, errp);
- } else if (model) {
- /* FIXME TCG - use data for stdip/stfl */
}
if (!*errp) {
@@ -786,6 +784,12 @@ void s390_realize_cpu_model(CPUState *cs, Error **errp)
}
apply_cpu_model(cpu->model, errp);
+
+ cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
+ if (tcg_enabled()) {
+ /* basic mode, write the cpu address into the first 4 bit of the ID */
+ cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.cpu_num);
+ }
}
static void get_feature(Object *obj, Visitor *v, const char *name,
diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index 73dd05daf0..d089707073 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -960,7 +960,7 @@
/* STORE CPU ADDRESS */
C(0xb212, STAP, S, Z, la2, 0, new, m1_16, stap, 0)
/* STORE CPU ID */
- C(0xb202, STIDP, S, Z, la2, 0, new, m1_64, stidp, 0)
+ C(0xb202, STIDP, S, Z, la2, 0, new, 0, stidp, 0)
/* STORE CPU TIMER */
C(0xb209, STPT, S, Z, la2, 0, new, m1_64, stpt, 0)
/* STORE FACILITY LIST */
diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c
index 4daa01632e..b5081019c5 100644
--- a/target/s390x/misc_helper.c
+++ b/target/s390x/misc_helper.c
@@ -378,6 +378,7 @@ uint64_t HELPER(stpt)(CPUS390XState *env)
uint32_t HELPER(stsi)(CPUS390XState *env, uint64_t a0,
uint64_t r0, uint64_t r1)
{
+ S390CPU *cpu = s390_env_get_cpu(env);
int cc = 0;
int sel1, sel2;
@@ -397,12 +398,14 @@ uint32_t HELPER(stsi)(CPUS390XState *env, uint64_t a0,
if ((sel1 == 1) && (sel2 == 1)) {
/* Basic Machine Configuration */
struct sysib_111 sysib;
+ char type[5] = {};
memset(&sysib, 0, sizeof(sysib));
ebcdic_put(sysib.manuf, "QEMU ", 16);
- /* same as machine type number in STORE CPU ID */
- ebcdic_put(sysib.type, "QEMU", 4);
- /* same as model number in STORE CPU ID */
+ /* same as machine type number in STORE CPU ID, but in EBCDIC */
+ snprintf(type, ARRAY_SIZE(type), "%X", cpu->model->def->type);
+ ebcdic_put(sysib.type, type, 4);
+ /* model number (not stored in STORE CPU ID for z/Architecure) */
ebcdic_put(sysib.model, "QEMU ", 16);
ebcdic_put(sysib.sequence, "QEMU ", 16);
ebcdic_put(sysib.plant, "QEMU", 4);
diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index d2917e47ad..8c055b7bb7 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -3876,14 +3876,9 @@ static ExitStatus op_stctl(DisasContext *s, DisasOps *o)
static ExitStatus op_stidp(DisasContext *s, DisasOps *o)
{
- TCGv_i64 t1 = tcg_temp_new_i64();
-
check_privileged(s);
- tcg_gen_ld32u_i64(o->out, cpu_env, offsetof(CPUS390XState, cpu_num));
- tcg_gen_ld32u_i64(t1, cpu_env, offsetof(CPUS390XState, machine_type));
- tcg_gen_deposit_i64(o->out, o->out, t1, 32, 32);
- tcg_temp_free_i64(t1);
-
+ tcg_gen_ld_i64(o->out, cpu_env, offsetof(CPUS390XState, cpuid));
+ tcg_gen_qemu_st_i64(o->out, o->addr1, get_mem_index(s), MO_TEQ | MO_ALIGN);
return NO_EXIT;
}