| /* |
| * S/390 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 2.1 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 "cpu.h" |
| #include "internal.h" |
| #include "exec/gdbstub.h" |
| #include "qemu/timer.h" |
| #include "qemu/qemu-print.h" |
| #include "hw/s390x/ioinst.h" |
| #include "hw/s390x/pv.h" |
| #include "sysemu/hw_accel.h" |
| #include "sysemu/runstate.h" |
| #ifndef CONFIG_USER_ONLY |
| #include "sysemu/tcg.h" |
| #endif |
| |
| #ifndef CONFIG_USER_ONLY |
| void s390x_tod_timer(void *opaque) |
| { |
| cpu_inject_clock_comparator((S390CPU *) opaque); |
| } |
| |
| void s390x_cpu_timer(void *opaque) |
| { |
| cpu_inject_cpu_timer((S390CPU *) opaque); |
| } |
| |
| hwaddr s390_cpu_get_phys_page_debug(CPUState *cs, vaddr vaddr) |
| { |
| S390CPU *cpu = S390_CPU(cs); |
| CPUS390XState *env = &cpu->env; |
| target_ulong raddr; |
| int prot; |
| uint64_t asc = env->psw.mask & PSW_MASK_ASC; |
| uint64_t tec; |
| |
| /* 31-Bit mode */ |
| if (!(env->psw.mask & PSW_MASK_64)) { |
| vaddr &= 0x7fffffff; |
| } |
| |
| /* We want to read the code (e.g., see what we are single-stepping).*/ |
| if (asc != PSW_ASC_HOME) { |
| asc = PSW_ASC_PRIMARY; |
| } |
| |
| /* |
| * We want to read code even if IEP is active. Use MMU_DATA_LOAD instead |
| * of MMU_INST_FETCH. |
| */ |
| if (mmu_translate(env, vaddr, MMU_DATA_LOAD, asc, &raddr, &prot, &tec)) { |
| return -1; |
| } |
| return raddr; |
| } |
| |
| hwaddr s390_cpu_get_phys_addr_debug(CPUState *cs, vaddr vaddr) |
| { |
| hwaddr phys_addr; |
| target_ulong page; |
| |
| page = vaddr & TARGET_PAGE_MASK; |
| phys_addr = cpu_get_phys_page_debug(cs, page); |
| phys_addr += (vaddr & ~TARGET_PAGE_MASK); |
| |
| return phys_addr; |
| } |
| |
| static inline bool is_special_wait_psw(uint64_t psw_addr) |
| { |
| /* signal quiesce */ |
| return (psw_addr & 0xfffUL) == 0xfffUL; |
| } |
| |
| void s390_handle_wait(S390CPU *cpu) |
| { |
| CPUState *cs = CPU(cpu); |
| |
| if (s390_cpu_halt(cpu) == 0) { |
| if (is_special_wait_psw(cpu->env.psw.addr)) { |
| qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); |
| } else { |
| cpu->env.crash_reason = S390_CRASH_REASON_DISABLED_WAIT; |
| qemu_system_guest_panicked(cpu_get_crash_info(cs)); |
| } |
| } |
| } |
| |
| void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr) |
| { |
| uint64_t old_mask = env->psw.mask; |
| |
| env->psw.addr = addr; |
| env->psw.mask = mask; |
| |
| /* KVM will handle all WAITs and trigger a WAIT exit on disabled_wait */ |
| if (!tcg_enabled()) { |
| return; |
| } |
| env->cc_op = (mask >> 44) & 3; |
| |
| if ((old_mask ^ mask) & PSW_MASK_PER) { |
| s390_cpu_recompute_watchpoints(env_cpu(env)); |
| } |
| |
| if (mask & PSW_MASK_WAIT) { |
| s390_handle_wait(env_archcpu(env)); |
| } |
| } |
| |
| uint64_t get_psw_mask(CPUS390XState *env) |
| { |
| uint64_t r = env->psw.mask; |
| |
| if (tcg_enabled()) { |
| env->cc_op = calc_cc(env, env->cc_op, env->cc_src, env->cc_dst, |
| env->cc_vr); |
| |
| r &= ~PSW_MASK_CC; |
| assert(!(env->cc_op & ~3)); |
| r |= (uint64_t)env->cc_op << 44; |
| } |
| |
| return r; |
| } |
| |
| LowCore *cpu_map_lowcore(CPUS390XState *env) |
| { |
| LowCore *lowcore; |
| hwaddr len = sizeof(LowCore); |
| |
| lowcore = cpu_physical_memory_map(env->psa, &len, true); |
| |
| if (len < sizeof(LowCore)) { |
| cpu_abort(env_cpu(env), "Could not map lowcore\n"); |
| } |
| |
| return lowcore; |
| } |
| |
| void cpu_unmap_lowcore(LowCore *lowcore) |
| { |
| cpu_physical_memory_unmap(lowcore, sizeof(LowCore), 1, sizeof(LowCore)); |
| } |
| |
| void do_restart_interrupt(CPUS390XState *env) |
| { |
| uint64_t mask, addr; |
| LowCore *lowcore; |
| |
| lowcore = cpu_map_lowcore(env); |
| |
| lowcore->restart_old_psw.mask = cpu_to_be64(get_psw_mask(env)); |
| lowcore->restart_old_psw.addr = cpu_to_be64(env->psw.addr); |
| mask = be64_to_cpu(lowcore->restart_new_psw.mask); |
| addr = be64_to_cpu(lowcore->restart_new_psw.addr); |
| |
| cpu_unmap_lowcore(lowcore); |
| env->pending_int &= ~INTERRUPT_RESTART; |
| |
| load_psw(env, mask, addr); |
| } |
| |
| void s390_cpu_recompute_watchpoints(CPUState *cs) |
| { |
| const int wp_flags = BP_CPU | BP_MEM_WRITE | BP_STOP_BEFORE_ACCESS; |
| S390CPU *cpu = S390_CPU(cs); |
| CPUS390XState *env = &cpu->env; |
| |
| /* We are called when the watchpoints have changed. First |
| remove them all. */ |
| cpu_watchpoint_remove_all(cs, BP_CPU); |
| |
| /* Return if PER is not enabled */ |
| if (!(env->psw.mask & PSW_MASK_PER)) { |
| return; |
| } |
| |
| /* Return if storage-alteration event is not enabled. */ |
| if (!(env->cregs[9] & PER_CR9_EVENT_STORE)) { |
| return; |
| } |
| |
| if (env->cregs[10] == 0 && env->cregs[11] == -1LL) { |
| /* We can't create a watchoint spanning the whole memory range, so |
| split it in two parts. */ |
| cpu_watchpoint_insert(cs, 0, 1ULL << 63, wp_flags, NULL); |
| cpu_watchpoint_insert(cs, 1ULL << 63, 1ULL << 63, wp_flags, NULL); |
| } else if (env->cregs[10] > env->cregs[11]) { |
| /* The address range loops, create two watchpoints. */ |
| cpu_watchpoint_insert(cs, env->cregs[10], -env->cregs[10], |
| wp_flags, NULL); |
| cpu_watchpoint_insert(cs, 0, env->cregs[11] + 1, wp_flags, NULL); |
| |
| } else { |
| /* Default case, create a single watchpoint. */ |
| cpu_watchpoint_insert(cs, env->cregs[10], |
| env->cregs[11] - env->cregs[10] + 1, |
| wp_flags, NULL); |
| } |
| } |
| |
| typedef struct SigpSaveArea { |
| 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 */ |
| } SigpSaveArea; |
| QEMU_BUILD_BUG_ON(sizeof(SigpSaveArea) != 512); |
| |
| int s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch) |
| { |
| static const uint8_t ar_id = 1; |
| SigpSaveArea *sa; |
| hwaddr len = sizeof(*sa); |
| int i; |
| |
| /* For PVMs storing will occur when this cpu enters SIE again */ |
| if (s390_is_pv()) { |
| return 0; |
| } |
| |
| sa = cpu_physical_memory_map(addr, &len, true); |
| 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)); |
| } |
| 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->crs[i] = cpu_to_be64(cpu->env.cregs[i]); |
| } |
| |
| cpu_physical_memory_unmap(sa, len, 1, len); |
| |
| return 0; |
| } |
| |
| 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; |
| int i; |
| |
| sa = cpu_physical_memory_map(addr, &save, true); |
| if (!sa) { |
| return -EFAULT; |
| } |
| if (save != len) { |
| cpu_physical_memory_unmap(sa, len, 1, 0); |
| return -EFAULT; |
| } |
| |
| if (s390_has_feat(S390_FEAT_VECTOR)) { |
| for (i = 0; i < 32; i++) { |
| sa->vregs[i][0] = cpu_to_be64(cpu->env.vregs[i][0]); |
| sa->vregs[i][1] = cpu_to_be64(cpu->env.vregs[i][1]); |
| } |
| } |
| if (s390_has_feat(S390_FEAT_GUARDED_STORAGE) && len >= ADTL_GS_MIN_SIZE) { |
| for (i = 0; i < 4; i++) { |
| sa->gscb[i] = cpu_to_be64(cpu->env.gscb[i]); |
| } |
| } |
| |
| cpu_physical_memory_unmap(sa, len, 1, len); |
| return 0; |
| } |
| #endif /* CONFIG_USER_ONLY */ |
| |
| void s390_cpu_dump_state(CPUState *cs, FILE *f, int flags) |
| { |
| S390CPU *cpu = S390_CPU(cs); |
| CPUS390XState *env = &cpu->env; |
| int i; |
| |
| if (env->cc_op > 3) { |
| qemu_fprintf(f, "PSW=mask %016" PRIx64 " addr %016" PRIx64 " cc %15s\n", |
| env->psw.mask, env->psw.addr, cc_name(env->cc_op)); |
| } else { |
| qemu_fprintf(f, "PSW=mask %016" PRIx64 " addr %016" PRIx64 " cc %02x\n", |
| env->psw.mask, env->psw.addr, env->cc_op); |
| } |
| |
| for (i = 0; i < 16; i++) { |
| qemu_fprintf(f, "R%02d=%016" PRIx64, i, env->regs[i]); |
| if ((i % 4) == 3) { |
| qemu_fprintf(f, "\n"); |
| } else { |
| qemu_fprintf(f, " "); |
| } |
| } |
| |
| if (flags & CPU_DUMP_FPU) { |
| if (s390_has_feat(S390_FEAT_VECTOR)) { |
| for (i = 0; i < 32; i++) { |
| qemu_fprintf(f, "V%02d=%016" PRIx64 "%016" PRIx64 "%c", |
| i, env->vregs[i][0], env->vregs[i][1], |
| i % 2 ? '\n' : ' '); |
| } |
| } else { |
| for (i = 0; i < 16; i++) { |
| qemu_fprintf(f, "F%02d=%016" PRIx64 "%c", |
| i, *get_freg(env, i), |
| (i % 4) == 3 ? '\n' : ' '); |
| } |
| } |
| } |
| |
| #ifndef CONFIG_USER_ONLY |
| for (i = 0; i < 16; i++) { |
| qemu_fprintf(f, "C%02d=%016" PRIx64, i, env->cregs[i]); |
| if ((i % 4) == 3) { |
| qemu_fprintf(f, "\n"); |
| } else { |
| qemu_fprintf(f, " "); |
| } |
| } |
| #endif |
| |
| #ifdef DEBUG_INLINE_BRANCHES |
| for (i = 0; i < CC_OP_MAX; i++) { |
| qemu_fprintf(f, " %15s = %10ld\t%10ld\n", cc_name(i), |
| inline_branch_miss[i], inline_branch_hit[i]); |
| } |
| #endif |
| |
| qemu_fprintf(f, "\n"); |
| } |
| |
| const char *cc_name(enum cc_op cc_op) |
| { |
| static const char * const cc_names[] = { |
| [CC_OP_CONST0] = "CC_OP_CONST0", |
| [CC_OP_CONST1] = "CC_OP_CONST1", |
| [CC_OP_CONST2] = "CC_OP_CONST2", |
| [CC_OP_CONST3] = "CC_OP_CONST3", |
| [CC_OP_DYNAMIC] = "CC_OP_DYNAMIC", |
| [CC_OP_STATIC] = "CC_OP_STATIC", |
| [CC_OP_NZ] = "CC_OP_NZ", |
| [CC_OP_ADDU] = "CC_OP_ADDU", |
| [CC_OP_SUBU] = "CC_OP_SUBU", |
| [CC_OP_LTGT_32] = "CC_OP_LTGT_32", |
| [CC_OP_LTGT_64] = "CC_OP_LTGT_64", |
| [CC_OP_LTUGTU_32] = "CC_OP_LTUGTU_32", |
| [CC_OP_LTUGTU_64] = "CC_OP_LTUGTU_64", |
| [CC_OP_LTGT0_32] = "CC_OP_LTGT0_32", |
| [CC_OP_LTGT0_64] = "CC_OP_LTGT0_64", |
| [CC_OP_ADD_64] = "CC_OP_ADD_64", |
| [CC_OP_SUB_64] = "CC_OP_SUB_64", |
| [CC_OP_ABS_64] = "CC_OP_ABS_64", |
| [CC_OP_NABS_64] = "CC_OP_NABS_64", |
| [CC_OP_ADD_32] = "CC_OP_ADD_32", |
| [CC_OP_SUB_32] = "CC_OP_SUB_32", |
| [CC_OP_ABS_32] = "CC_OP_ABS_32", |
| [CC_OP_NABS_32] = "CC_OP_NABS_32", |
| [CC_OP_COMP_32] = "CC_OP_COMP_32", |
| [CC_OP_COMP_64] = "CC_OP_COMP_64", |
| [CC_OP_TM_32] = "CC_OP_TM_32", |
| [CC_OP_TM_64] = "CC_OP_TM_64", |
| [CC_OP_NZ_F32] = "CC_OP_NZ_F32", |
| [CC_OP_NZ_F64] = "CC_OP_NZ_F64", |
| [CC_OP_NZ_F128] = "CC_OP_NZ_F128", |
| [CC_OP_ICM] = "CC_OP_ICM", |
| [CC_OP_SLA_32] = "CC_OP_SLA_32", |
| [CC_OP_SLA_64] = "CC_OP_SLA_64", |
| [CC_OP_FLOGR] = "CC_OP_FLOGR", |
| [CC_OP_LCBB] = "CC_OP_LCBB", |
| [CC_OP_VC] = "CC_OP_VC", |
| [CC_OP_MULS_32] = "CC_OP_MULS_32", |
| [CC_OP_MULS_64] = "CC_OP_MULS_64", |
| }; |
| |
| return cc_names[cc_op]; |
| } |
