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s390x/kvm: factor out storing of CPU status

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Factor it out into s390_store_status(), to be used also by TCG later on.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170928203708.9376-14-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2017-09-28 22:36:51 +02:00 committed by Cornelia Huck
parent eabcea18f8
commit cf729baaec
3 changed files with 65 additions and 66 deletions
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60
target/s390x/helper.c
View File

@ -245,6 +245,66 @@ void s390_cpu_recompute_watchpoints(CPUState *cs)
}
}
struct sigp_save_area {
uint64_t fprs[16]; /* 0x0000 */
uint64_t grs[16]; /* 0x0080 */
PSW psw; /* 0x0100 */
uint8_t pad_0x0110[0x0118 - 0x0110]; /* 0x0110 */
uint32_t prefix; /* 0x0118 */
uint32_t fpc; /* 0x011c */
uint8_t pad_0x0120[0x0124 - 0x0120]; /* 0x0120 */
uint32_t todpr; /* 0x0124 */
uint64_t cputm; /* 0x0128 */
uint64_t ckc; /* 0x0130 */
uint8_t pad_0x0138[0x0140 - 0x0138]; /* 0x0138 */
uint32_t ars[16]; /* 0x0140 */
uint64_t crs[16]; /* 0x0384 */
};
QEMU_BUILD_BUG_ON(sizeof(struct sigp_save_area) != 512);
int s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch)
{
static const uint8_t ar_id = 1;
struct sigp_save_area *sa;
hwaddr len = sizeof(*sa);
int i;
sa = cpu_physical_memory_map(addr, &len, 1);
if (!sa) {
return -EFAULT;
}
if (len != sizeof(*sa)) {
cpu_physical_memory_unmap(sa, len, 1, 0);
return -EFAULT;
}
if (store_arch) {
cpu_physical_memory_write(offsetof(LowCore, ar_access_id), &ar_id, 1);
}
for (i = 0; i < 16; ++i) {
sa->fprs[i] = cpu_to_be64(get_freg(&cpu->env, i)->ll);
}
for (i = 0; i < 16; ++i) {
sa->grs[i] = cpu_to_be64(cpu->env.regs[i]);
}
sa->psw.addr = cpu_to_be64(cpu->env.psw.addr);
sa->psw.mask = cpu_to_be64(get_psw_mask(&cpu->env));
sa->prefix = cpu_to_be32(cpu->env.psa);
sa->fpc = cpu_to_be32(cpu->env.fpc);
sa->todpr = cpu_to_be32(cpu->env.todpr);
sa->cputm = cpu_to_be64(cpu->env.cputm);
sa->ckc = cpu_to_be64(cpu->env.ckc >> 8);
for (i = 0; i < 16; ++i) {
sa->ars[i] = cpu_to_be32(cpu->env.aregs[i]);
}
for (i = 0; i < 16; ++i) {
sa->ars[i] = cpu_to_be64(cpu->env.cregs[i]);
}
cpu_physical_memory_unmap(sa, len, 1, len);
return 0;
}
#endif /* CONFIG_USER_ONLY */
void s390_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,

2
target/s390x/internal.h
View File

@ -353,6 +353,8 @@ void s390x_tod_timer(void *opaque);
void s390x_cpu_timer(void *opaque);
void do_restart_interrupt(CPUS390XState *env);
void s390_handle_wait(S390CPU *cpu);
#define S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
int s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch);
#ifndef CONFIG_USER_ONLY
LowCore *cpu_map_lowcore(CPUS390XState *env);
void cpu_unmap_lowcore(LowCore *lowcore);

69
target/s390x/kvm.c
View File

@ -1584,68 +1584,6 @@ static int do_store_adtl_status(S390CPU *cpu, hwaddr addr, hwaddr len)
return 0;
}
struct sigp_save_area {
uint64_t fprs[16]; /* 0x0000 */
uint64_t grs[16]; /* 0x0080 */
PSW psw; /* 0x0100 */
uint8_t pad_0x0110[0x0118 - 0x0110]; /* 0x0110 */
uint32_t prefix; /* 0x0118 */
uint32_t fpc; /* 0x011c */
uint8_t pad_0x0120[0x0124 - 0x0120]; /* 0x0120 */
uint32_t todpr; /* 0x0124 */
uint64_t cputm; /* 0x0128 */
uint64_t ckc; /* 0x0130 */
uint8_t pad_0x0138[0x0140 - 0x0138]; /* 0x0138 */
uint32_t ars[16]; /* 0x0140 */
uint64_t crs[16]; /* 0x0384 */
};
QEMU_BUILD_BUG_ON(sizeof(struct sigp_save_area) != 512);
#define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
static int kvm_s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch)
{
static const uint8_t ar_id = 1;
struct sigp_save_area *sa;
hwaddr len = sizeof(*sa);
int i;
sa = cpu_physical_memory_map(addr, &len, 1);
if (!sa) {
return -EFAULT;
}
if (len != sizeof(*sa)) {
cpu_physical_memory_unmap(sa, len, 1, 0);
return -EFAULT;
}
if (store_arch) {
cpu_physical_memory_write(offsetof(LowCore, ar_access_id), &ar_id, 1);
}
for (i = 0; i < 16; ++i) {
sa->fprs[i] = cpu_to_be64(get_freg(&cpu->env, i)->ll);
}
for (i = 0; i < 16; ++i) {
sa->grs[i] = cpu_to_be64(cpu->env.regs[i]);
}
sa->psw.addr = cpu_to_be64(cpu->env.psw.addr);
sa->psw.mask = cpu_to_be64(get_psw_mask(&cpu->env));
sa->prefix = cpu_to_be32(cpu->env.psa);
sa->fpc = cpu_to_be32(cpu->env.fpc);
sa->todpr = cpu_to_be32(cpu->env.todpr);
sa->cputm = cpu_to_be64(cpu->env.cputm);
sa->ckc = cpu_to_be64(cpu->env.ckc >> 8);
for (i = 0; i < 16; ++i) {
sa->ars[i] = cpu_to_be32(cpu->env.aregs[i]);
}
for (i = 0; i < 16; ++i) {
sa->ars[i] = cpu_to_be64(cpu->env.cregs[i]);
}
cpu_physical_memory_unmap(sa, len, 1, len);
return 0;
}
static void sigp_stop_and_store_status(CPUState *cs, run_on_cpu_data arg)
{
S390CPU *cpu = S390_CPU(cs);
@ -1665,7 +1603,7 @@ static void sigp_stop_and_store_status(CPUState *cs, run_on_cpu_data arg)
case CPU_STATE_STOPPED:
/* already stopped, just store the status */
cpu_synchronize_state(cs);
kvm_s390_store_status(cpu, KVM_S390_STORE_STATUS_DEF_ADDR, true);
s390_store_status(cpu, S390_STORE_STATUS_DEF_ADDR, true);
break;
}
si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
@ -1685,7 +1623,7 @@ static void sigp_store_status_at_address(CPUState *cs, run_on_cpu_data arg)
cpu_synchronize_state(cs);
if (kvm_s390_store_status(cpu, address, false)) {
if (s390_store_status(cpu, address, false)) {
set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
return;
}
@ -2067,8 +2005,7 @@ static int handle_intercept(S390CPU *cpu)
qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
}
if (cpu->env.sigp_order == SIGP_STOP_STORE_STATUS) {
kvm_s390_store_status(cpu, KVM_S390_STORE_STATUS_DEF_ADDR,
true);
s390_store_status(cpu, S390_STORE_STATUS_DEF_ADDR, true);
}
cpu->env.sigp_order = 0;
r = EXCP_HALTED;