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target-s390x: add get_per_in_range function

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This function checks if an address is in between the PER starting
address and the PER ending address, taking care of a possible
address range loop.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Aurelien Jarno 2015-06-13 00:45:55 +02:00 committed by Alexander Graf
parent a8f931a931
commit d453d10383
1 changed files with 11 additions and 0 deletions
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11
target-s390x/cpu.h
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@ -392,6 +392,17 @@ static inline uint8_t get_per_atmid(CPUS390XState *env)
((env->psw.mask & PSW_ASC_ACCREG)? (1 << 2) : 0);
}
/* Check if an address is within the PER starting address and the PER
ending address. The address range might loop. */
static inline bool get_per_in_range(CPUS390XState *env, uint64_t addr)
{
if (env->cregs[10] <= env->cregs[11]) {
return env->cregs[10] <= addr && addr <= env->cregs[11];
} else {
return env->cregs[10] <= addr || addr <= env->cregs[11];
}
}
#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