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s390x: Use cpu_to_be64 in SIGP STORE ADDITIONAL STATUS 

As we will support vector instructions soon, and vector registers are
stored in 64bit host chunks, let's use cpu_to_be64. Same applies to the
guarded storage control block.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190222081153.14206-2-david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2019-02-22 09:11:51 +01:00 committed by Cornelia Huck
parent 20b084c4b1
commit 2cca53fd5c
1 changed files with 21 additions and 10 deletions
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31
target/s390x/helper.c
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@ -272,32 +272,43 @@ int s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch)
return 0;
}
#define ADTL_GS_OFFSET 1024 /* offset of GS data in adtl save area */
typedef struct SigpAdtlSaveArea {
uint64_t vregs[32][2]; /* 0x0000 */
uint8_t pad_0x0200[0x0400 - 0x0200]; /* 0x0200 */
uint64_t gscb[4]; /* 0x0400 */
uint8_t pad_0x0420[0x1000 - 0x0420]; /* 0x0420 */
} SigpAdtlSaveArea;
QEMU_BUILD_BUG_ON(sizeof(SigpAdtlSaveArea) != 4096);
#define ADTL_GS_MIN_SIZE 2048 /* minimal size of adtl save area for GS */
int s390_store_adtl_status(S390CPU *cpu, hwaddr addr, hwaddr len)
{
SigpAdtlSaveArea *sa;
hwaddr save = len;
void *mem;
int i;
mem = cpu_physical_memory_map(addr, &save, 1);
if (!mem) {
sa = cpu_physical_memory_map(addr, &save, 1);
if (!sa) {
return -EFAULT;
}
if (save != len) {
cpu_physical_memory_unmap(mem, len, 1, 0);
cpu_physical_memory_unmap(sa, len, 1, 0);
return -EFAULT;
}
/* FIXME: as soon as TCG supports these features, convert cpu->be */
if (s390_has_feat(S390_FEAT_VECTOR)) {
memcpy(mem, &cpu->env.vregs, 512);
for (i = 0; i < 32; i++) {
sa->vregs[i][0] = cpu_to_be64(cpu->env.vregs[i][0].ll);
sa->vregs[i][1] = cpu_to_be64(cpu->env.vregs[i][1].ll);
}
}
if (s390_has_feat(S390_FEAT_GUARDED_STORAGE) && len >= ADTL_GS_MIN_SIZE) {
memcpy(mem + ADTL_GS_OFFSET, &cpu->env.gscb, 32);
for (i = 0; i < 4; i++) {
sa->gscb[i] = cpu_to_be64(cpu->env.gscb[i]);
}
}
cpu_physical_memory_unmap(mem, len, 1, len);
cpu_physical_memory_unmap(sa, len, 1, len);
return 0;
}
#endif /* CONFIG_USER_ONLY */