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target/s390x: Push trigger_pgm_exception lower in s390_cpu_tlb_fill 

Delay triggering an exception until the end, after we have
determined ultimate success or failure, and also taken into
account whether this is a non-faulting probe.

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20191001171614.8405-6-richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
This commit is contained in:
Richard Henderson 2019-10-01 10:16:01 -07:00 committed by David Hildenbrand
parent 1e36aee636
commit 18ab936d00
1 changed files with 7 additions and 2 deletions
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9
target/s390x/excp_helper.c
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@ -127,7 +127,7 @@ bool s390_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
CPUS390XState *env = &cpu->env;
target_ulong vaddr, raddr;
uint64_t asc;
int prot, fail;
int prot, fail, excp;
qemu_log_mask(CPU_LOG_MMU, "%s: addr 0x%" VADDR_PRIx " rw %d mmu_idx %d\n",
__func__, address, access_type, mmu_idx);
@ -141,12 +141,14 @@ bool s390_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
vaddr &= 0x7fffffff;
}
fail = mmu_translate(env, vaddr, access_type, asc, &raddr, &prot, true);
excp = 0; /* exception already raised */
} else if (mmu_idx == MMU_REAL_IDX) {
/* 31-Bit mode */
if (!(env->psw.mask & PSW_MASK_64)) {
vaddr &= 0x7fffffff;
}
fail = mmu_translate_real(env, vaddr, access_type, &raddr, &prot);
excp = 0; /* exception already raised */
} else {
g_assert_not_reached();
}
@ -159,7 +161,7 @@ bool s390_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
qemu_log_mask(CPU_LOG_MMU,
"%s: raddr %" PRIx64 " > ram_size %" PRIx64 "\n",
__func__, (uint64_t)raddr, (uint64_t)ram_size);
trigger_pgm_exception(env, PGM_ADDRESSING, ILEN_AUTO);
excp = PGM_ADDRESSING;
fail = 1;
}
@ -175,6 +177,9 @@ bool s390_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
return false;
}
if (excp) {
trigger_pgm_exception(env, excp, ILEN_AUTO);
}
cpu_restore_state(cs, retaddr, true);
/*