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s390x/tcg: Reset exception_index to -1 instead of 0 

We use the marker "-1" for "no exception". s390_cpu_do_interrupt() might
get confused by that.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
This commit is contained in:
David Hildenbrand 2019-09-02 09:49:46 +02:00
parent 4300b7c2cd
commit bed04a2b9c
1 changed files with 3 additions and 3 deletions
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6
target/s390x/mem_helper.c
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@ -1747,7 +1747,7 @@ uint32_t HELPER(tprot)(CPUS390XState *env, uint64_t a1, uint64_t a2)
if (env->int_pgm_code == PGM_PROTECTION) {
/* retry if reading is possible */
cs->exception_index = 0;
cs->exception_index = -1;
if (!s390_cpu_virt_mem_check_read(cpu, a1, 0, 1)) {
/* Fetching permitted; storing not permitted */
return 1;
@ -1757,7 +1757,7 @@ uint32_t HELPER(tprot)(CPUS390XState *env, uint64_t a1, uint64_t a2)
switch (env->int_pgm_code) {
case PGM_PROTECTION:
/* Fetching not permitted; storing not permitted */
cs->exception_index = 0;
cs->exception_index = -1;
return 2;
case PGM_ADDRESSING:
case PGM_TRANS_SPEC:
@ -1767,7 +1767,7 @@ uint32_t HELPER(tprot)(CPUS390XState *env, uint64_t a1, uint64_t a2)
}
/* Translation not available */
cs->exception_index = 0;
cs->exception_index = -1;
return 3;
}