diff options
| -rw-r--r-- | target/s390x/cpu.h | 7 | ||||
| -rw-r--r-- | target/s390x/helper.c | 44 | ||||
| -rw-r--r-- | target/s390x/misc_helper.c | 21 | ||||
| -rw-r--r-- | target/s390x/mmu_helper.c | 6 | ||||
| -rw-r--r-- | target/s390x/translate.c | 3 |
5 files changed, 49 insertions, 32 deletions
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h index a4d31df2b5..2954974dac 100644 --- a/target/s390x/cpu.h +++ b/target/s390x/cpu.h @@ -460,11 +460,6 @@ static inline bool get_per_in_range(CPUS390XState *env, uint64_t addr) } #ifndef CONFIG_USER_ONLY -/* In several cases of runtime exceptions, we havn't recorded the true - instruction length. Use these codes when raising exceptions in order - to re-compute the length by examining the insn in memory. */ -#define ILEN_LATER 0x20 -#define ILEN_LATER_INC 0x21 void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen); #endif @@ -1133,6 +1128,8 @@ uint32_t set_cc_nz_f128(float128 v); int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3); void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3); #endif +/* automatically detect the instruction length */ +#define ILEN_AUTO 0xff void program_interrupt(CPUS390XState *env, uint32_t code, int ilen); void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp, uintptr_t retaddr); diff --git a/target/s390x/helper.c b/target/s390x/helper.c index a8d20c51fa..aef09e1234 100644 --- a/target/s390x/helper.c +++ b/target/s390x/helper.c @@ -204,7 +204,7 @@ int s390_cpu_handle_mmu_fault(CPUState *cs, vaddr orig_vaddr, 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_LATER_INC); + trigger_pgm_exception(env, PGM_ADDRESSING, ILEN_AUTO); return 1; } @@ -331,16 +331,42 @@ static void do_program_interrupt(CPUS390XState *env) LowCore *lowcore; int ilen = env->int_pgm_ilen; - switch (ilen) { - case ILEN_LATER: - ilen = get_ilen(cpu_ldub_code(env, env->psw.addr)); - break; - case ILEN_LATER_INC: + 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; - default: - assert(ilen == 2 || ilen == 4 || ilen == 6); } qemu_log_mask(CPU_LOG_INT, "%s: code=0x%x ilen=%d\n", @@ -737,6 +763,6 @@ void s390x_cpu_do_unaligned_access(CPUState *cs, vaddr addr, if (retaddr) { cpu_restore_state(cs, retaddr); } - program_interrupt(env, PGM_SPECIFICATION, ILEN_LATER); + program_interrupt(env, PGM_SPECIFICATION, ILEN_AUTO); } #endif /* CONFIG_USER_ONLY */ diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c index d6eda832eb..4daa01632e 100644 --- a/target/s390x/misc_helper.c +++ b/target/s390x/misc_helper.c @@ -54,19 +54,14 @@ void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp, uintptr_t retaddr) { CPUState *cs = CPU(s390_env_get_cpu(env)); - int t; cs->exception_index = EXCP_PGM; env->int_pgm_code = excp; + env->int_pgm_ilen = ILEN_AUTO; /* Use the (ultimate) callers address to find the insn that trapped. */ cpu_restore_state(cs, retaddr); - /* Advance past the insn. */ - t = cpu_ldub_code(env, env->psw.addr); - env->int_pgm_ilen = t = get_ilen(t); - env->psw.addr += t; - cpu_loop_exit(cs); } @@ -199,12 +194,12 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3) IplParameterBlock *iplb; if (env->psw.mask & PSW_MASK_PSTATE) { - program_interrupt(env, PGM_PRIVILEGED, ILEN_LATER_INC); + program_interrupt(env, PGM_PRIVILEGED, ILEN_AUTO); return; } if ((subcode & ~0x0ffffULL) || (subcode > 6)) { - program_interrupt(env, PGM_SPECIFICATION, ILEN_LATER_INC); + program_interrupt(env, PGM_SPECIFICATION, ILEN_AUTO); return; } @@ -229,12 +224,12 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3) break; case 5: if ((r1 & 1) || (addr & 0x0fffULL)) { - program_interrupt(env, PGM_SPECIFICATION, ILEN_LATER_INC); + program_interrupt(env, PGM_SPECIFICATION, ILEN_AUTO); return; } if (!address_space_access_valid(&address_space_memory, addr, sizeof(IplParameterBlock), false)) { - program_interrupt(env, PGM_ADDRESSING, ILEN_LATER_INC); + program_interrupt(env, PGM_ADDRESSING, ILEN_AUTO); return; } iplb = g_malloc0(sizeof(IplParameterBlock)); @@ -258,12 +253,12 @@ out: return; case 6: if ((r1 & 1) || (addr & 0x0fffULL)) { - program_interrupt(env, PGM_SPECIFICATION, ILEN_LATER_INC); + program_interrupt(env, PGM_SPECIFICATION, ILEN_AUTO); return; } if (!address_space_access_valid(&address_space_memory, addr, sizeof(IplParameterBlock), true)) { - program_interrupt(env, PGM_ADDRESSING, ILEN_LATER_INC); + program_interrupt(env, PGM_ADDRESSING, ILEN_AUTO); return; } iplb = s390_ipl_get_iplb(); @@ -307,7 +302,7 @@ void HELPER(diag)(CPUS390XState *env, uint32_t r1, uint32_t r3, uint32_t num) } if (r) { - program_interrupt(env, PGM_OPERATION, ILEN_LATER_INC); + program_interrupt(env, PGM_OPERATION, ILEN_AUTO); } } diff --git a/target/s390x/mmu_helper.c b/target/s390x/mmu_helper.c index 501e39010d..a873dc48a0 100644 --- a/target/s390x/mmu_helper.c +++ b/target/s390x/mmu_helper.c @@ -79,13 +79,13 @@ static void trigger_prot_fault(CPUS390XState *env, target_ulong vaddr, return; } - trigger_access_exception(env, PGM_PROTECTION, ILEN_LATER_INC, tec); + trigger_access_exception(env, PGM_PROTECTION, ILEN_AUTO, tec); } static void trigger_page_fault(CPUS390XState *env, target_ulong vaddr, uint32_t type, uint64_t asc, int rw, bool exc) { - int ilen = ILEN_LATER; + int ilen = ILEN_AUTO; uint64_t tec; tec = vaddr | (rw == MMU_DATA_STORE ? FS_WRITE : FS_READ) | asc >> 46; @@ -431,7 +431,7 @@ static int translate_pages(S390CPU *cpu, vaddr addr, int nr_pages, for (i = 0; i < nr_pages; i++) { /* Low-address protection? */ if (lowprot && (addr < 512 || (addr >= 4096 && addr < 4096 + 512))) { - trigger_access_exception(env, PGM_PROTECTION, ILEN_LATER_INC, 0); + trigger_access_exception(env, PGM_PROTECTION, ILEN_AUTO, 0); return -EACCES; } ret = mmu_translate(env, addr, is_write, asc, &pages[i], &pflags, true); diff --git a/target/s390x/translate.c b/target/s390x/translate.c index 95f91d4f08..d2917e47ad 100644 --- a/target/s390x/translate.c +++ b/target/s390x/translate.c @@ -355,8 +355,7 @@ static void gen_program_exception(DisasContext *s, int code) tcg_gen_st_i32(tmp, cpu_env, offsetof(CPUS390XState, int_pgm_ilen)); tcg_temp_free_i32(tmp); - /* Advance past instruction. */ - s->pc = s->next_pc; + /* update the psw */ update_psw_addr(s); /* Save off cc. */ |