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-rw-r--r--target/s390x/mem_helper.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index 20e1ac0ea9..320e9ee65c 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -528,7 +528,15 @@ static inline void set_address(CPUS390XState *env, int reg, uint64_t address)
}
}
-static inline uint64_t wrap_length(CPUS390XState *env, uint64_t length)
+static inline uint64_t wrap_length32(CPUS390XState *env, uint64_t length)
+{
+ if (!(env->psw.mask & PSW_MASK_64)) {
+ return (uint32_t)length;
+ }
+ return length;
+}
+
+static inline uint64_t wrap_length31(CPUS390XState *env, uint64_t length)
{
if (!(env->psw.mask & PSW_MASK_64)) {
/* 24-Bit and 31-Bit mode */
@@ -539,7 +547,7 @@ static inline uint64_t wrap_length(CPUS390XState *env, uint64_t length)
static inline uint64_t get_length(CPUS390XState *env, int reg)
{
- return wrap_length(env, env->regs[reg]);
+ return wrap_length31(env, env->regs[reg]);
}
static inline void set_length(CPUS390XState *env, int reg, uint64_t length)
@@ -2378,7 +2386,7 @@ uint32_t HELPER(mvcos)(CPUS390XState *env, uint64_t dest, uint64_t src,
s390_program_interrupt(env, PGM_PRIVILEGED, 6, ra);
}
- len = wrap_length(env, len);
+ len = wrap_length32(env, len);
if (len > 4096) {
cc = 3;
len = 4096;