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-rw-r--r--target/s390x/cpu.c7
-rw-r--r--target/s390x/cpu.h6
2 files changed, 8 insertions, 5 deletions
diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index a1bf2ba5a7..a69005d9b5 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -92,9 +92,10 @@ static void s390_cpu_initial_reset(CPUState *s)
int i;
s390_cpu_reset(s);
- /* initial reset does not touch regs,fregs and aregs */
- memset(&env->fpc, 0, offsetof(CPUS390XState, end_reset_fields) -
- offsetof(CPUS390XState, fpc));
+ /* initial reset does not clear everything! */
+ memset(&env->start_initial_reset_fields, 0,
+ offsetof(CPUS390XState, end_reset_fields) -
+ offsetof(CPUS390XState, start_initial_reset_fields));
/* architectured initial values for CR 0 and 14 */
env->cregs[0] = CR0_RESET;
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index e27d9d874a..c74b4193ee 100644
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -88,6 +88,10 @@ typedef struct CPUS390XState {
*/
CPU_DoubleU vregs[32][2]; /* vector registers */
uint32_t aregs[16]; /* access registers */
+ uint8_t riccb[64]; /* runtime instrumentation control */
+
+ /* Fields up to this point are not cleared by initial CPU reset */
+ struct {} start_initial_reset_fields;
uint32_t fpc; /* floating-point control register */
uint32_t cc_op;
@@ -137,8 +141,6 @@ typedef struct CPUS390XState {
uint64_t gbea;
uint64_t pp;
- uint8_t riccb[64];
-
/* Fields up to this point are cleared by a CPU reset */
struct {} end_reset_fields;