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target/s390x: Remove ilen argument from trigger_pgm_exception

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All but one caller passes ILEN_UNWIND, which is not stored.
For the one use case in s390_cpu_tlb_fill, set int_pgm_ilen
directly, simply to avoid the assert within do_program_interrupt.

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20191001171614.8405-18-richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
This commit is contained in:
Richard Henderson 2019-10-01 10:16:13 -07:00 • committed by David Hildenbrand
parent f5cbdc4397
commit 5c58704b07
4 changed files with 8 additions and 10 deletions
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7
target/s390x/excp_helper.c
View file

@ -42,7 +42,7 @@ void QEMU_NORETURN tcg_s390_program_interrupt(CPUS390XState *env,
cpu_restore_state(cs, ra, true); cpu_restore_state(cs, ra, true);
qemu_log_mask(CPU_LOG_INT, "program interrupt at %#" PRIx64 "\n", qemu_log_mask(CPU_LOG_INT, "program interrupt at %#" PRIx64 "\n",
env->psw.addr); env->psw.addr);
trigger_pgm_exception(env, code, ILEN_UNWIND); trigger_pgm_exception(env, code);
cpu_loop_exit(cs); cpu_loop_exit(cs);
} }
@ -96,7 +96,7 @@ bool s390_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
{ {
S390CPU *cpu = S390_CPU(cs); S390CPU *cpu = S390_CPU(cs);
trigger_pgm_exception(&cpu->env, PGM_ADDRESSING, ILEN_UNWIND); trigger_pgm_exception(&cpu->env, PGM_ADDRESSING);
/* On real machines this value is dropped into LowMem. Since this /* On real machines this value is dropped into LowMem. Since this
is userland, simply put this someplace that cpu_loop can find it. */ is userland, simply put this someplace that cpu_loop can find it. */
cpu->env.__excp_addr = address; cpu->env.__excp_addr = address;
@ -186,7 +186,8 @@ bool s390_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
* and so unwinding will not occur. However, ILEN is also undefined * and so unwinding will not occur. However, ILEN is also undefined
* for that case -- we choose to set ILEN = 2. * for that case -- we choose to set ILEN = 2.
*/ */
trigger_pgm_exception(env, excp, 2); env->int_pgm_ilen = 2;
trigger_pgm_exception(env, excp);
cpu_loop_exit_restore(cs, retaddr); cpu_loop_exit_restore(cs, retaddr);
} }

2
target/s390x/internal.h
View file

@ -317,7 +317,7 @@ void cpu_unmap_lowcore(LowCore *lowcore);
/* interrupt.c */ /* interrupt.c */
void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen); void trigger_pgm_exception(CPUS390XState *env, uint32_t code);
void cpu_inject_clock_comparator(S390CPU *cpu); void cpu_inject_clock_comparator(S390CPU *cpu);
void cpu_inject_cpu_timer(S390CPU *cpu); void cpu_inject_cpu_timer(S390CPU *cpu);
void cpu_inject_emergency_signal(S390CPU *cpu, uint16_t src_cpu_addr); void cpu_inject_emergency_signal(S390CPU *cpu, uint16_t src_cpu_addr);

7
target/s390x/interrupt.c
View file

@ -22,16 +22,13 @@
#endif #endif
/* Ensure to exit the TB after this call! */ /* Ensure to exit the TB after this call! */
void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen) void trigger_pgm_exception(CPUS390XState *env, uint32_t code)
{ {
CPUState *cs = env_cpu(env); CPUState *cs = env_cpu(env);
cs->exception_index = EXCP_PGM; cs->exception_index = EXCP_PGM;
env->int_pgm_code = code; env->int_pgm_code = code;
/* If ILEN_UNWIND, int_pgm_ilen already has the correct value. */ /* env->int_pgm_ilen is already set, or will be set during unwinding */
if (ilen != ILEN_UNWIND) {
env->int_pgm_ilen = ilen;
}
} }
void s390_program_interrupt(CPUS390XState *env, uint32_t code, uintptr_t ra) void s390_program_interrupt(CPUS390XState *env, uint32_t code, uintptr_t ra)

2
target/s390x/mmu_helper.c
View file

@ -44,7 +44,7 @@ static void trigger_access_exception(CPUS390XState *env, uint32_t type,
if (type != PGM_ADDRESSING) { if (type != PGM_ADDRESSING) {
stq_phys(cs->as, env->psa + offsetof(LowCore, trans_exc_code), tec); stq_phys(cs->as, env->psa + offsetof(LowCore, trans_exc_code), tec);
} }
trigger_pgm_exception(env, type, ILEN_UNWIND); trigger_pgm_exception(env, type);
} }
} }