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target/s390x: Move exception-related functions to a new excp_helper.c file 

These functions can not be compiled with --disable-tcg. But since we
need the other functions from helper.c in the non-tcg build, we can also
not simply remove helper.c from the non-tcg builds. Thus the problematic
functions have to be moved into a separate new file instead that we
can later omit in the non-tcg builds.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1500886370-14572-5-git-send-email-thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Thomas Huth 2017-07-24 10:52:49 +02:00 committed by Cornelia Huck
parent e3cfd926f7
commit cded4014ae
4 changed files with 528 additions and 469 deletions
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2
target/s390x/Makefile.objs
View File

@ -1,6 +1,6 @@
obj-y += translate.o helper.o cpu.o interrupt.o
obj-y += int_helper.o fpu_helper.o cc_helper.o mem_helper.o misc_helper.o
obj-y += gdbstub.o cpu_models.o cpu_features.o
obj-y += gdbstub.o cpu_models.o cpu_features.o excp_helper.o
obj-$(CONFIG_SOFTMMU) += machine.o ioinst.o arch_dump.o mmu_helper.o diag.o
obj-$(CONFIG_KVM) += kvm.o

8
target/s390x/cpu.h
View File

@ -801,6 +801,8 @@ static inline void setcc(S390CPU *cpu, uint64_t cc)
env->cc_op = cc;
}
#ifndef CONFIG_USER_ONLY
typedef struct LowCore
{
/* prefix area: defined by architecture */
@ -918,6 +920,11 @@ typedef struct LowCore
uint8_t pad18[0x2000-0x1400]; /* 0x1400 */
} QEMU_PACKED LowCore;
LowCore *cpu_map_lowcore(CPUS390XState *env);
void cpu_unmap_lowcore(LowCore *lowcore);
#endif
/* STSI */
#define STSI_LEVEL_MASK 0x00000000f0000000ULL
#define STSI_LEVEL_CURRENT 0x0000000000000000ULL
@ -1094,6 +1101,7 @@ struct sysib_322 {
#define SIGP_ORDER_MASK 0x000000ff
void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr);
uint64_t get_psw_mask(CPUS390XState *env);
target_ulong mmu_real2abs(CPUS390XState *env, target_ulong raddr);
int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
target_ulong *raddr, int *flags, bool exc);

515
target/s390x/excp_helper.c Normal file
View File

@ -0,0 +1,515 @@
/*
* s390x exception / interrupt helpers
*
* Copyright (c) 2009 Ulrich Hecht
* Copyright (c) 2011 Alexander Graf
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "cpu.h"
#include "qemu/timer.h"
#include "exec/exec-all.h"
#include "exec/cpu_ldst.h"
#include "hw/s390x/ioinst.h"
#ifndef CONFIG_USER_ONLY
#include "sysemu/sysemu.h"
#endif
/* #define DEBUG_S390 */
/* #define DEBUG_S390_STDOUT */
#ifdef DEBUG_S390
#ifdef DEBUG_S390_STDOUT
#define DPRINTF(fmt, ...) \
do { fprintf(stderr, fmt, ## __VA_ARGS__); \
if (qemu_log_separate()) { qemu_log(fmt, ##__VA_ARGS__); } } while (0)
#else
#define DPRINTF(fmt, ...) \
do { qemu_log(fmt, ## __VA_ARGS__); } while (0)
#endif
#else
#define DPRINTF(fmt, ...) \
do { } while (0)
#endif
#if defined(CONFIG_USER_ONLY)
void s390_cpu_do_interrupt(CPUState *cs)
{
cs->exception_index = -1;
}
int s390_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
int rw, int mmu_idx)
{
S390CPU *cpu = S390_CPU(cs);
cs->exception_index = EXCP_PGM;
cpu->env.int_pgm_code = PGM_ADDRESSING;
/* On real machines this value is dropped into LowMem. Since this
is userland, simply put this someplace that cpu_loop can find it. */
cpu->env.__excp_addr = address;
return 1;
}
#else /* !CONFIG_USER_ONLY */
int s390_cpu_handle_mmu_fault(CPUState *cs, vaddr orig_vaddr,
int rw, int mmu_idx)
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
uint64_t asc = cpu_mmu_idx_to_asc(mmu_idx);
target_ulong vaddr, raddr;
int prot;
DPRINTF("%s: address 0x%" VADDR_PRIx " rw %d mmu_idx %d\n",
__func__, orig_vaddr, rw, mmu_idx);
orig_vaddr &= TARGET_PAGE_MASK;
vaddr = orig_vaddr;
/* 31-Bit mode */
if (!(env->psw.mask & PSW_MASK_64)) {
vaddr &= 0x7fffffff;
}
if (mmu_translate(env, vaddr, rw, asc, &raddr, &prot, true)) {
/* Translation ended in exception */
return 1;
}
/* check out of RAM access */
if (raddr > ram_size) {
DPRINTF("%s: raddr %" PRIx64 " > ram_size %" PRIx64 "\n", __func__,
(uint64_t)raddr, (uint64_t)ram_size);
trigger_pgm_exception(env, PGM_ADDRESSING, ILEN_AUTO);
return 1;
}
qemu_log_mask(CPU_LOG_MMU, "%s: set tlb %" PRIx64 " -> %" PRIx64 " (%x)\n",
__func__, (uint64_t)vaddr, (uint64_t)raddr, prot);
tlb_set_page(cs, orig_vaddr, raddr, prot,
mmu_idx, TARGET_PAGE_SIZE);
return 0;
}
static void do_program_interrupt(CPUS390XState *env)
{
uint64_t mask, addr;
LowCore *lowcore;
int ilen = env->int_pgm_ilen;
if (ilen == ILEN_AUTO) {
ilen = get_ilen(cpu_ldub_code(env, env->psw.addr));
}
assert(ilen == 2 || ilen == 4 || ilen == 6);
switch (env->int_pgm_code) {
case PGM_PER:
if (env->per_perc_atmid & PER_CODE_EVENT_NULLIFICATION) {
break;
}
/* FALL THROUGH */
case PGM_OPERATION:
case PGM_PRIVILEGED:
case PGM_EXECUTE:
case PGM_PROTECTION:
case PGM_ADDRESSING:
case PGM_SPECIFICATION:
case PGM_DATA:
case PGM_FIXPT_OVERFLOW:
case PGM_FIXPT_DIVIDE:
case PGM_DEC_OVERFLOW:
case PGM_DEC_DIVIDE:
case PGM_HFP_EXP_OVERFLOW:
case PGM_HFP_EXP_UNDERFLOW:
case PGM_HFP_SIGNIFICANCE:
case PGM_HFP_DIVIDE:
case PGM_TRANS_SPEC:
case PGM_SPECIAL_OP:
case PGM_OPERAND:
case PGM_HFP_SQRT:
case PGM_PC_TRANS_SPEC:
case PGM_ALET_SPEC:
case PGM_MONITOR:
/* advance the PSW if our exception is not nullifying */
env->psw.addr += ilen;
break;
}
qemu_log_mask(CPU_LOG_INT, "%s: code=0x%x ilen=%d\n",
__func__, env->int_pgm_code, ilen);
lowcore = cpu_map_lowcore(env);
/* Signal PER events with the exception. */
if (env->per_perc_atmid) {
env->int_pgm_code |= PGM_PER;
lowcore->per_address = cpu_to_be64(env->per_address);
lowcore->per_perc_atmid = cpu_to_be16(env->per_perc_atmid);
env->per_perc_atmid = 0;
}
lowcore->pgm_ilen = cpu_to_be16(ilen);
lowcore->pgm_code = cpu_to_be16(env->int_pgm_code);
lowcore->program_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->program_old_psw.addr = cpu_to_be64(env->psw.addr);
mask = be64_to_cpu(lowcore->program_new_psw.mask);
addr = be64_to_cpu(lowcore->program_new_psw.addr);
lowcore->per_breaking_event_addr = cpu_to_be64(env->gbea);
cpu_unmap_lowcore(lowcore);
DPRINTF("%s: %x %x %" PRIx64 " %" PRIx64 "\n", __func__,
env->int_pgm_code, ilen, env->psw.mask,
env->psw.addr);
load_psw(env, mask, addr);
}
static void do_svc_interrupt(CPUS390XState *env)
{
uint64_t mask, addr;
LowCore *lowcore;
lowcore = cpu_map_lowcore(env);
lowcore->svc_code = cpu_to_be16(env->int_svc_code);
lowcore->svc_ilen = cpu_to_be16(env->int_svc_ilen);
lowcore->svc_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->svc_old_psw.addr = cpu_to_be64(env->psw.addr + env->int_svc_ilen);
mask = be64_to_cpu(lowcore->svc_new_psw.mask);
addr = be64_to_cpu(lowcore->svc_new_psw.addr);
cpu_unmap_lowcore(lowcore);
load_psw(env, mask, addr);
/* When a PER event is pending, the PER exception has to happen
immediately after the SERVICE CALL one. */
if (env->per_perc_atmid) {
env->int_pgm_code = PGM_PER;
env->int_pgm_ilen = env->int_svc_ilen;
do_program_interrupt(env);
}
}
#define VIRTIO_SUBCODE_64 0x0D00
static void do_ext_interrupt(CPUS390XState *env)
{
S390CPU *cpu = s390_env_get_cpu(env);
uint64_t mask, addr;
LowCore *lowcore;
ExtQueue *q;
if (!(env->psw.mask & PSW_MASK_EXT)) {
cpu_abort(CPU(cpu), "Ext int w/o ext mask\n");
}
if (env->ext_index < 0 || env->ext_index >= MAX_EXT_QUEUE) {
cpu_abort(CPU(cpu), "Ext queue overrun: %d\n", env->ext_index);
}
q = &env->ext_queue[env->ext_index];
lowcore = cpu_map_lowcore(env);
lowcore->ext_int_code = cpu_to_be16(q->code);
lowcore->ext_params = cpu_to_be32(q->param);
lowcore->ext_params2 = cpu_to_be64(q->param64);
lowcore->external_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->external_old_psw.addr = cpu_to_be64(env->psw.addr);
lowcore->cpu_addr = cpu_to_be16(env->cpu_num | VIRTIO_SUBCODE_64);
mask = be64_to_cpu(lowcore->external_new_psw.mask);
addr = be64_to_cpu(lowcore->external_new_psw.addr);
cpu_unmap_lowcore(lowcore);
env->ext_index--;
if (env->ext_index == -1) {
env->pending_int &= ~INTERRUPT_EXT;
}
DPRINTF("%s: %" PRIx64 " %" PRIx64 "\n", __func__,
env->psw.mask, env->psw.addr);
load_psw(env, mask, addr);
}
static void do_io_interrupt(CPUS390XState *env)
{
S390CPU *cpu = s390_env_get_cpu(env);
LowCore *lowcore;
IOIntQueue *q;
uint8_t isc;
int disable = 1;
int found = 0;
if (!(env->psw.mask & PSW_MASK_IO)) {
cpu_abort(CPU(cpu), "I/O int w/o I/O mask\n");
}
for (isc = 0; isc < ARRAY_SIZE(env->io_index); isc++) {
uint64_t isc_bits;
if (env->io_index[isc] < 0) {
continue;
}
if (env->io_index[isc] >= MAX_IO_QUEUE) {
cpu_abort(CPU(cpu), "I/O queue overrun for isc %d: %d\n",
isc, env->io_index[isc]);
}
q = &env->io_queue[env->io_index[isc]][isc];
isc_bits = ISC_TO_ISC_BITS(IO_INT_WORD_ISC(q->word));
if (!(env->cregs[6] & isc_bits)) {
disable = 0;
continue;
}
if (!found) {
uint64_t mask, addr;
found = 1;
lowcore = cpu_map_lowcore(env);
lowcore->subchannel_id = cpu_to_be16(q->id);
lowcore->subchannel_nr = cpu_to_be16(q->nr);
lowcore->io_int_parm = cpu_to_be32(q->parm);
lowcore->io_int_word = cpu_to_be32(q->word);
lowcore->io_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->io_old_psw.addr = cpu_to_be64(env->psw.addr);
mask = be64_to_cpu(lowcore->io_new_psw.mask);
addr = be64_to_cpu(lowcore->io_new_psw.addr);
cpu_unmap_lowcore(lowcore);
env->io_index[isc]--;
DPRINTF("%s: %" PRIx64 " %" PRIx64 "\n", __func__,
env->psw.mask, env->psw.addr);
load_psw(env, mask, addr);
}
if (env->io_index[isc] >= 0) {
disable = 0;
}
continue;
}
if (disable) {
env->pending_int &= ~INTERRUPT_IO;
}
}
static void do_mchk_interrupt(CPUS390XState *env)
{
S390CPU *cpu = s390_env_get_cpu(env);
uint64_t mask, addr;
LowCore *lowcore;
MchkQueue *q;
int i;
if (!(env->psw.mask & PSW_MASK_MCHECK)) {
cpu_abort(CPU(cpu), "Machine check w/o mchk mask\n");
}
if (env->mchk_index < 0 || env->mchk_index >= MAX_MCHK_QUEUE) {
cpu_abort(CPU(cpu), "Mchk queue overrun: %d\n", env->mchk_index);
}
q = &env->mchk_queue[env->mchk_index];
if (q->type != 1) {
/* Don't know how to handle this... */
cpu_abort(CPU(cpu), "Unknown machine check type %d\n", q->type);
}
if (!(env->cregs[14] & (1 << 28))) {
/* CRW machine checks disabled */
return;
}
lowcore = cpu_map_lowcore(env);
for (i = 0; i < 16; i++) {
lowcore->floating_pt_save_area[i] = cpu_to_be64(get_freg(env, i)->ll);
lowcore->gpregs_save_area[i] = cpu_to_be64(env->regs[i]);
lowcore->access_regs_save_area[i] = cpu_to_be32(env->aregs[i]);
lowcore->cregs_save_area[i] = cpu_to_be64(env->cregs[i]);
}
lowcore->prefixreg_save_area = cpu_to_be32(env->psa);
lowcore->fpt_creg_save_area = cpu_to_be32(env->fpc);
lowcore->tod_progreg_save_area = cpu_to_be32(env->todpr);
lowcore->cpu_timer_save_area[0] = cpu_to_be32(env->cputm >> 32);
lowcore->cpu_timer_save_area[1] = cpu_to_be32((uint32_t)env->cputm);
lowcore->clock_comp_save_area[0] = cpu_to_be32(env->ckc >> 32);
lowcore->clock_comp_save_area[1] = cpu_to_be32((uint32_t)env->ckc);
lowcore->mcck_interruption_code[0] = cpu_to_be32(0x00400f1d);
lowcore->mcck_interruption_code[1] = cpu_to_be32(0x40330000);
lowcore->mcck_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->mcck_old_psw.addr = cpu_to_be64(env->psw.addr);
mask = be64_to_cpu(lowcore->mcck_new_psw.mask);
addr = be64_to_cpu(lowcore->mcck_new_psw.addr);
cpu_unmap_lowcore(lowcore);
env->mchk_index--;
if (env->mchk_index == -1) {
env->pending_int &= ~INTERRUPT_MCHK;
}
DPRINTF("%s: %" PRIx64 " %" PRIx64 "\n", __func__,
env->psw.mask, env->psw.addr);
load_psw(env, mask, addr);
}
void s390_cpu_do_interrupt(CPUState *cs)
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
qemu_log_mask(CPU_LOG_INT, "%s: %d at pc=%" PRIx64 "\n",
__func__, cs->exception_index, env->psw.addr);
s390_cpu_set_state(CPU_STATE_OPERATING, cpu);
/* handle machine checks */
if ((env->psw.mask & PSW_MASK_MCHECK) &&
(cs->exception_index == -1)) {
if (env->pending_int & INTERRUPT_MCHK) {
cs->exception_index = EXCP_MCHK;
}
}
/* handle external interrupts */
if ((env->psw.mask & PSW_MASK_EXT) &&
cs->exception_index == -1) {
if (env->pending_int & INTERRUPT_EXT) {
/* code is already in env */
cs->exception_index = EXCP_EXT;
} else if (env->pending_int & INTERRUPT_TOD) {
cpu_inject_ext(cpu, 0x1004, 0, 0);
cs->exception_index = EXCP_EXT;
env->pending_int &= ~INTERRUPT_EXT;
env->pending_int &= ~INTERRUPT_TOD;
} else if (env->pending_int & INTERRUPT_CPUTIMER) {
cpu_inject_ext(cpu, 0x1005, 0, 0);
cs->exception_index = EXCP_EXT;
env->pending_int &= ~INTERRUPT_EXT;
env->pending_int &= ~INTERRUPT_TOD;
}
}
/* handle I/O interrupts */
if ((env->psw.mask & PSW_MASK_IO) &&
(cs->exception_index == -1)) {
if (env->pending_int & INTERRUPT_IO) {
cs->exception_index = EXCP_IO;
}
}
switch (cs->exception_index) {
case EXCP_PGM:
do_program_interrupt(env);
break;
case EXCP_SVC:
do_svc_interrupt(env);
break;
case EXCP_EXT:
do_ext_interrupt(env);
break;
case EXCP_IO:
do_io_interrupt(env);
break;
case EXCP_MCHK:
do_mchk_interrupt(env);
break;
}
cs->exception_index = -1;
if (!env->pending_int) {
cs->interrupt_request &= ~CPU_INTERRUPT_HARD;
}
}
bool s390_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
{
if (interrupt_request & CPU_INTERRUPT_HARD) {
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
if (env->ex_value) {
/* Execution of the target insn is indivisible from
the parent EXECUTE insn. */
return false;
}
if (env->psw.mask & PSW_MASK_EXT) {
s390_cpu_do_interrupt(cs);
return true;
}
}
return false;
}
void s390x_cpu_debug_excp_handler(CPUState *cs)
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
CPUWatchpoint *wp_hit = cs->watchpoint_hit;
if (wp_hit && wp_hit->flags & BP_CPU) {
/* FIXME: When the storage-alteration-space control bit is set,
the exception should only be triggered if the memory access
is done using an address space with the storage-alteration-event
bit set. We have no way to detect that with the current
watchpoint code. */
cs->watchpoint_hit = NULL;
env->per_address = env->psw.addr;
env->per_perc_atmid |= PER_CODE_EVENT_STORE | get_per_atmid(env);
/* FIXME: We currently no way to detect the address space used
to trigger the watchpoint. For now just consider it is the
current default ASC. This turn to be true except when MVCP
and MVCS instrutions are not used. */
env->per_perc_atmid |= env->psw.mask & (PSW_MASK_ASC) >> 46;
/* Remove all watchpoints to re-execute the code. A PER exception
will be triggered, it will call load_psw which will recompute
the watchpoints. */
cpu_watchpoint_remove_all(cs, BP_CPU);
cpu_loop_exit_noexc(cs);
}
}
/* Unaligned accesses are only diagnosed with MO_ALIGN. At the moment,
this is only for the atomic operations, for which we want to raise a
specification exception. */
void s390x_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
MMUAccessType access_type,
int mmu_idx, uintptr_t retaddr)
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
if (retaddr) {
cpu_restore_state(cs, retaddr);
}
program_interrupt(env, PGM_SPECIFICATION, ILEN_AUTO);
}
#endif /* CONFIG_USER_ONLY */

472
target/s390x/helper.c
View File

@ -24,7 +24,6 @@
#include "exec/gdbstub.h"
#include "qemu/timer.h"
#include "exec/exec-all.h"
#include "exec/cpu_ldst.h"
#include "hw/s390x/ioinst.h"
#ifndef CONFIG_USER_ONLY
#include "sysemu/sysemu.h"
@ -143,69 +142,7 @@ S390CPU *cpu_s390x_init(const char *cpu_model)
return cpu;
}
#if defined(CONFIG_USER_ONLY)
void s390_cpu_do_interrupt(CPUState *cs)
{
cs->exception_index = -1;
}
int s390_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
int rw, int mmu_idx)
{
S390CPU *cpu = S390_CPU(cs);
cs->exception_index = EXCP_PGM;
cpu->env.int_pgm_code = PGM_ADDRESSING;
/* On real machines this value is dropped into LowMem. Since this
is userland, simply put this someplace that cpu_loop can find it. */
cpu->env.__excp_addr = address;
return 1;
}
#else /* !CONFIG_USER_ONLY */
int s390_cpu_handle_mmu_fault(CPUState *cs, vaddr orig_vaddr,
int rw, int mmu_idx)
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
uint64_t asc = cpu_mmu_idx_to_asc(mmu_idx);
target_ulong vaddr, raddr;
int prot;
DPRINTF("%s: address 0x%" VADDR_PRIx " rw %d mmu_idx %d\n",
__func__, orig_vaddr, rw, mmu_idx);
orig_vaddr &= TARGET_PAGE_MASK;
vaddr = orig_vaddr;
/* 31-Bit mode */
if (!(env->psw.mask & PSW_MASK_64)) {
vaddr &= 0x7fffffff;
}
if (mmu_translate(env, vaddr, rw, asc, &raddr, &prot, true)) {
/* Translation ended in exception */
return 1;
}
/* check out of RAM access */
if (raddr > ram_size) {
DPRINTF("%s: raddr %" PRIx64 " > ram_size %" PRIx64 "\n", __func__,
(uint64_t)raddr, (uint64_t)ram_size);
trigger_pgm_exception(env, PGM_ADDRESSING, ILEN_AUTO);
return 1;
}
qemu_log_mask(CPU_LOG_MMU, "%s: set tlb %" PRIx64 " -> %" PRIx64 " (%x)\n",
__func__, (uint64_t)vaddr, (uint64_t)raddr, prot);
tlb_set_page(cs, orig_vaddr, raddr, prot,
mmu_idx, TARGET_PAGE_SIZE);
return 0;
}
#ifndef CONFIG_USER_ONLY
hwaddr s390_cpu_get_phys_page_debug(CPUState *cs, vaddr vaddr)
{
@ -262,7 +199,7 @@ void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr)
}
}
static uint64_t get_psw_mask(CPUS390XState *env)
uint64_t get_psw_mask(CPUS390XState *env)
{
uint64_t r = env->psw.mask;
@ -278,7 +215,7 @@ static uint64_t get_psw_mask(CPUS390XState *env)
return r;
}
static LowCore *cpu_map_lowcore(CPUS390XState *env)
LowCore *cpu_map_lowcore(CPUS390XState *env)
{
S390CPU *cpu = s390_env_get_cpu(env);
LowCore *lowcore;
@ -293,7 +230,7 @@ static LowCore *cpu_map_lowcore(CPUS390XState *env)
return lowcore;
}
static void cpu_unmap_lowcore(LowCore *lowcore)
void cpu_unmap_lowcore(LowCore *lowcore)
{
cpu_physical_memory_unmap(lowcore, sizeof(LowCore), 1, sizeof(LowCore));
}
@ -315,362 +252,6 @@ void do_restart_interrupt(CPUS390XState *env)
load_psw(env, mask, addr);
}
static void do_program_interrupt(CPUS390XState *env)
{
uint64_t mask, addr;
LowCore *lowcore;
int ilen = env->int_pgm_ilen;
if (ilen == ILEN_AUTO) {
ilen = get_ilen(cpu_ldub_code(env, env->psw.addr));
}
assert(ilen == 2 || ilen == 4 || ilen == 6);
switch (env->int_pgm_code) {
case PGM_PER:
if (env->per_perc_atmid & PER_CODE_EVENT_NULLIFICATION) {
break;
}
/* FALL THROUGH */
case PGM_OPERATION:
case PGM_PRIVILEGED:
case PGM_EXECUTE:
case PGM_PROTECTION:
case PGM_ADDRESSING:
case PGM_SPECIFICATION:
case PGM_DATA:
case PGM_FIXPT_OVERFLOW:
case PGM_FIXPT_DIVIDE:
case PGM_DEC_OVERFLOW:
case PGM_DEC_DIVIDE:
case PGM_HFP_EXP_OVERFLOW:
case PGM_HFP_EXP_UNDERFLOW:
case PGM_HFP_SIGNIFICANCE:
case PGM_HFP_DIVIDE:
case PGM_TRANS_SPEC:
case PGM_SPECIAL_OP:
case PGM_OPERAND:
case PGM_HFP_SQRT:
case PGM_PC_TRANS_SPEC:
case PGM_ALET_SPEC:
case PGM_MONITOR:
/* advance the PSW if our exception is not nullifying */
env->psw.addr += ilen;
break;
}
qemu_log_mask(CPU_LOG_INT, "%s: code=0x%x ilen=%d\n",
__func__, env->int_pgm_code, ilen);
lowcore = cpu_map_lowcore(env);
/* Signal PER events with the exception. */
if (env->per_perc_atmid) {
env->int_pgm_code |= PGM_PER;
lowcore->per_address = cpu_to_be64(env->per_address);
lowcore->per_perc_atmid = cpu_to_be16(env->per_perc_atmid);
env->per_perc_atmid = 0;
}
lowcore->pgm_ilen = cpu_to_be16(ilen);
lowcore->pgm_code = cpu_to_be16(env->int_pgm_code);
lowcore->program_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->program_old_psw.addr = cpu_to_be64(env->psw.addr);
mask = be64_to_cpu(lowcore->program_new_psw.mask);
addr = be64_to_cpu(lowcore->program_new_psw.addr);
lowcore->per_breaking_event_addr = cpu_to_be64(env->gbea);
cpu_unmap_lowcore(lowcore);
DPRINTF("%s: %x %x %" PRIx64 " %" PRIx64 "\n", __func__,
env->int_pgm_code, ilen, env->psw.mask,
env->psw.addr);
load_psw(env, mask, addr);
}
static void do_svc_interrupt(CPUS390XState *env)
{
uint64_t mask, addr;
LowCore *lowcore;
lowcore = cpu_map_lowcore(env);
lowcore->svc_code = cpu_to_be16(env->int_svc_code);
lowcore->svc_ilen = cpu_to_be16(env->int_svc_ilen);
lowcore->svc_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->svc_old_psw.addr = cpu_to_be64(env->psw.addr + env->int_svc_ilen);
mask = be64_to_cpu(lowcore->svc_new_psw.mask);
addr = be64_to_cpu(lowcore->svc_new_psw.addr);
cpu_unmap_lowcore(lowcore);
load_psw(env, mask, addr);
/* When a PER event is pending, the PER exception has to happen
immediately after the SERVICE CALL one. */
if (env->per_perc_atmid) {
env->int_pgm_code = PGM_PER;
env->int_pgm_ilen = env->int_svc_ilen;
do_program_interrupt(env);
}
}
#define VIRTIO_SUBCODE_64 0x0D00
static void do_ext_interrupt(CPUS390XState *env)
{
S390CPU *cpu = s390_env_get_cpu(env);
uint64_t mask, addr;
LowCore *lowcore;
ExtQueue *q;
if (!(env->psw.mask & PSW_MASK_EXT)) {
cpu_abort(CPU(cpu), "Ext int w/o ext mask\n");
}
if (env->ext_index < 0 || env->ext_index >= MAX_EXT_QUEUE) {
cpu_abort(CPU(cpu), "Ext queue overrun: %d\n", env->ext_index);
}
q = &env->ext_queue[env->ext_index];
lowcore = cpu_map_lowcore(env);
lowcore->ext_int_code = cpu_to_be16(q->code);
lowcore->ext_params = cpu_to_be32(q->param);
lowcore->ext_params2 = cpu_to_be64(q->param64);
lowcore->external_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->external_old_psw.addr = cpu_to_be64(env->psw.addr);
lowcore->cpu_addr = cpu_to_be16(env->cpu_num | VIRTIO_SUBCODE_64);
mask = be64_to_cpu(lowcore->external_new_psw.mask);
addr = be64_to_cpu(lowcore->external_new_psw.addr);
cpu_unmap_lowcore(lowcore);
env->ext_index--;
if (env->ext_index == -1) {
env->pending_int &= ~INTERRUPT_EXT;
}
DPRINTF("%s: %" PRIx64 " %" PRIx64 "\n", __func__,
env->psw.mask, env->psw.addr);
load_psw(env, mask, addr);
}
static void do_io_interrupt(CPUS390XState *env)
{
S390CPU *cpu = s390_env_get_cpu(env);
LowCore *lowcore;
IOIntQueue *q;
uint8_t isc;
int disable = 1;
int found = 0;
if (!(env->psw.mask & PSW_MASK_IO)) {
cpu_abort(CPU(cpu), "I/O int w/o I/O mask\n");
}
for (isc = 0; isc < ARRAY_SIZE(env->io_index); isc++) {
uint64_t isc_bits;
if (env->io_index[isc] < 0) {
continue;
}
if (env->io_index[isc] >= MAX_IO_QUEUE) {
cpu_abort(CPU(cpu), "I/O queue overrun for isc %d: %d\n",
isc, env->io_index[isc]);
}
q = &env->io_queue[env->io_index[isc]][isc];
isc_bits = ISC_TO_ISC_BITS(IO_INT_WORD_ISC(q->word));
if (!(env->cregs[6] & isc_bits)) {
disable = 0;
continue;
}
if (!found) {
uint64_t mask, addr;
found = 1;
lowcore = cpu_map_lowcore(env);
lowcore->subchannel_id = cpu_to_be16(q->id);
lowcore->subchannel_nr = cpu_to_be16(q->nr);
lowcore->io_int_parm = cpu_to_be32(q->parm);
lowcore->io_int_word = cpu_to_be32(q->word);
lowcore->io_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->io_old_psw.addr = cpu_to_be64(env->psw.addr);
mask = be64_to_cpu(lowcore->io_new_psw.mask);
addr = be64_to_cpu(lowcore->io_new_psw.addr);
cpu_unmap_lowcore(lowcore);
env->io_index[isc]--;
DPRINTF("%s: %" PRIx64 " %" PRIx64 "\n", __func__,
env->psw.mask, env->psw.addr);
load_psw(env, mask, addr);
}
if (env->io_index[isc] >= 0) {
disable = 0;
}
continue;
}
if (disable) {
env->pending_int &= ~INTERRUPT_IO;
}
}
static void do_mchk_interrupt(CPUS390XState *env)
{
S390CPU *cpu = s390_env_get_cpu(env);
uint64_t mask, addr;
LowCore *lowcore;
MchkQueue *q;
int i;
if (!(env->psw.mask & PSW_MASK_MCHECK)) {
cpu_abort(CPU(cpu), "Machine check w/o mchk mask\n");
}
if (env->mchk_index < 0 || env->mchk_index >= MAX_MCHK_QUEUE) {
cpu_abort(CPU(cpu), "Mchk queue overrun: %d\n", env->mchk_index);
}
q = &env->mchk_queue[env->mchk_index];
if (q->type != 1) {
/* Don't know how to handle this... */
cpu_abort(CPU(cpu), "Unknown machine check type %d\n", q->type);
}
if (!(env->cregs[14] & (1 << 28))) {
/* CRW machine checks disabled */
return;
}
lowcore = cpu_map_lowcore(env);
for (i = 0; i < 16; i++) {
lowcore->floating_pt_save_area[i] = cpu_to_be64(get_freg(env, i)->ll);
lowcore->gpregs_save_area[i] = cpu_to_be64(env->regs[i]);
lowcore->access_regs_save_area[i] = cpu_to_be32(env->aregs[i]);
lowcore->cregs_save_area[i] = cpu_to_be64(env->cregs[i]);
}
lowcore->prefixreg_save_area = cpu_to_be32(env->psa);
lowcore->fpt_creg_save_area = cpu_to_be32(env->fpc);
lowcore->tod_progreg_save_area = cpu_to_be32(env->todpr);
lowcore->cpu_timer_save_area[0] = cpu_to_be32(env->cputm >> 32);
lowcore->cpu_timer_save_area[1] = cpu_to_be32((uint32_t)env->cputm);
lowcore->clock_comp_save_area[0] = cpu_to_be32(env->ckc >> 32);
lowcore->clock_comp_save_area[1] = cpu_to_be32((uint32_t)env->ckc);
lowcore->mcck_interruption_code[0] = cpu_to_be32(0x00400f1d);
lowcore->mcck_interruption_code[1] = cpu_to_be32(0x40330000);
lowcore->mcck_old_psw.mask = cpu_to_be64(get_psw_mask(env));
lowcore->mcck_old_psw.addr = cpu_to_be64(env->psw.addr);
mask = be64_to_cpu(lowcore->mcck_new_psw.mask);
addr = be64_to_cpu(lowcore->mcck_new_psw.addr);
cpu_unmap_lowcore(lowcore);
env->mchk_index--;
if (env->mchk_index == -1) {
env->pending_int &= ~INTERRUPT_MCHK;
}
DPRINTF("%s: %" PRIx64 " %" PRIx64 "\n", __func__,
env->psw.mask, env->psw.addr);
load_psw(env, mask, addr);
}
void s390_cpu_do_interrupt(CPUState *cs)
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
qemu_log_mask(CPU_LOG_INT, "%s: %d at pc=%" PRIx64 "\n",
__func__, cs->exception_index, env->psw.addr);
s390_cpu_set_state(CPU_STATE_OPERATING, cpu);
/* handle machine checks */
if ((env->psw.mask & PSW_MASK_MCHECK) &&
(cs->exception_index == -1)) {
if (env->pending_int & INTERRUPT_MCHK) {
cs->exception_index = EXCP_MCHK;
}
}
/* handle external interrupts */
if ((env->psw.mask & PSW_MASK_EXT) &&
cs->exception_index == -1) {
if (env->pending_int & INTERRUPT_EXT) {
/* code is already in env */
cs->exception_index = EXCP_EXT;
} else if (env->pending_int & INTERRUPT_TOD) {
cpu_inject_ext(cpu, 0x1004, 0, 0);
cs->exception_index = EXCP_EXT;
env->pending_int &= ~INTERRUPT_EXT;
env->pending_int &= ~INTERRUPT_TOD;
} else if (env->pending_int & INTERRUPT_CPUTIMER) {
cpu_inject_ext(cpu, 0x1005, 0, 0);
cs->exception_index = EXCP_EXT;
env->pending_int &= ~INTERRUPT_EXT;
env->pending_int &= ~INTERRUPT_TOD;
}
}
/* handle I/O interrupts */
if ((env->psw.mask & PSW_MASK_IO) &&
(cs->exception_index == -1)) {
if (env->pending_int & INTERRUPT_IO) {
cs->exception_index = EXCP_IO;
}
}
switch (cs->exception_index) {
case EXCP_PGM:
do_program_interrupt(env);
break;
case EXCP_SVC:
do_svc_interrupt(env);
break;
case EXCP_EXT:
do_ext_interrupt(env);
break;
case EXCP_IO:
do_io_interrupt(env);
break;
case EXCP_MCHK:
do_mchk_interrupt(env);
break;
}
cs->exception_index = -1;
if (!env->pending_int) {
cs->interrupt_request &= ~CPU_INTERRUPT_HARD;
}
}
bool s390_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
{
if (interrupt_request & CPU_INTERRUPT_HARD) {
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
if (env->ex_value) {
/* Execution of the target insn is indivisible from
the parent EXECUTE insn. */
return false;
}
if (env->psw.mask & PSW_MASK_EXT) {
s390_cpu_do_interrupt(cs);
return true;
}
}
return false;
}
void s390_cpu_recompute_watchpoints(CPUState *cs)
{
const int wp_flags = BP_CPU | BP_MEM_WRITE | BP_STOP_BEFORE_ACCESS;
@ -710,51 +291,6 @@ void s390_cpu_recompute_watchpoints(CPUState *cs)
}
}
void s390x_cpu_debug_excp_handler(CPUState *cs)
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
CPUWatchpoint *wp_hit = cs->watchpoint_hit;
if (wp_hit && wp_hit->flags & BP_CPU) {
/* FIXME: When the storage-alteration-space control bit is set,
the exception should only be triggered if the memory access
is done using an address space with the storage-alteration-event
bit set. We have no way to detect that with the current
watchpoint code. */
cs->watchpoint_hit = NULL;
env->per_address = env->psw.addr;
env->per_perc_atmid |= PER_CODE_EVENT_STORE | get_per_atmid(env);
/* FIXME: We currently no way to detect the address space used
to trigger the watchpoint. For now just consider it is the
current default ASC. This turn to be true except when MVCP
and MVCS instrutions are not used. */
env->per_perc_atmid |= env->psw.mask & (PSW_MASK_ASC) >> 46;
/* Remove all watchpoints to re-execute the code. A PER exception
will be triggered, it will call load_psw which will recompute
the watchpoints. */
cpu_watchpoint_remove_all(cs, BP_CPU);
cpu_loop_exit_noexc(cs);
}
}
/* Unaligned accesses are only diagnosed with MO_ALIGN. At the moment,
this is only for the atomic operations, for which we want to raise a
specification exception. */
void s390x_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
MMUAccessType access_type,
int mmu_idx, uintptr_t retaddr)
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
if (retaddr) {
cpu_restore_state(cs, retaddr);
}
program_interrupt(env, PGM_SPECIFICATION, ILEN_AUTO);
}
#endif /* CONFIG_USER_ONLY */
void s390_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,