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s390x: Store Additional Status SIGP order 

Add handling for the Store Additional Status at Address order
that exists for the Signal Processor (SIGP) instruction.

Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Eric Farman 2015-01-14 09:57:16 -05:00 committed by Cornelia Huck
parent fcb79802e0
commit abec53565d
2 changed files with 56 additions and 0 deletions
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1
target-s390x/cpu.h
View File

@ -945,6 +945,7 @@ struct sysib_322 {
#define SIGP_SET_PREFIX 0x0d
#define SIGP_STORE_STATUS_ADDR 0x0e
#define SIGP_SET_ARCH 0x12
#define SIGP_STORE_ADTL_STATUS 0x17
/* SIGP condition codes */
#define SIGP_CC_ORDER_CODE_ACCEPTED 0

55
target-s390x/kvm.c
View File

@ -1373,6 +1373,28 @@ static void sigp_stop(void *arg)
si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
}
#define ADTL_SAVE_AREA_SIZE 1024
static int kvm_s390_store_adtl_status(S390CPU *cpu, hwaddr addr)
{
void *mem;
hwaddr len = ADTL_SAVE_AREA_SIZE;
mem = cpu_physical_memory_map(addr, &len, 1);
if (!mem) {
return -EFAULT;
}
if (len != ADTL_SAVE_AREA_SIZE) {
cpu_physical_memory_unmap(mem, len, 1, 0);
return -EFAULT;
}
memcpy(mem, &cpu->env.vregs, 512);
cpu_physical_memory_unmap(mem, len, 1, len);
return 0;
}
#define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
#define SAVE_AREA_SIZE 512
static int kvm_s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch)
@ -1461,6 +1483,36 @@ static void sigp_store_status_at_address(void *arg)
si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
}
static void sigp_store_adtl_status(void *arg)
{
SigpInfo *si = arg;
if (!kvm_check_extension(kvm_state, KVM_CAP_S390_VECTOR_REGISTERS)) {
set_sigp_status(si, SIGP_STAT_INVALID_ORDER);
return;
}
/* cpu has to be stopped */
if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
return;
}
/* parameter must be aligned to 1024-byte boundary */
if (si->param & 0x3ff) {
set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
return;
}
cpu_synchronize_state(CPU(si->cpu));
if (kvm_s390_store_adtl_status(si->cpu, si->param)) {
set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
return;
}
si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
}
static void sigp_restart(void *arg)
{
SigpInfo *si = arg;
@ -1578,6 +1630,9 @@ static int handle_sigp_single_dst(S390CPU *dst_cpu, uint8_t order,
case SIGP_STORE_STATUS_ADDR:
run_on_cpu(CPU(dst_cpu), sigp_store_status_at_address, &si);
break;
case SIGP_STORE_ADTL_STATUS:
run_on_cpu(CPU(dst_cpu), sigp_store_adtl_status, &si);
break;
case SIGP_SET_PREFIX:
run_on_cpu(CPU(dst_cpu), sigp_set_prefix, &si);
break;