There are multiple issues with the COMPARE LOGICAL LONG EXTENDED
instruction:
- The test between the two operands is inverted, leading to an inversion
of the cc values 1 and 2.
- The address and length of an operand continue to be decreased after
reaching the end of this operand. These values are then wrong write
back to the registers.
- We should limit the amount of bytes to process, so that interrupts can
be served correctly.
Signed-off-by: Aurelien Jarno <address@hidden>
---
target/s390x/mem_helper.c | 36 ++++++++++++++++++++++++++++--------
1 file changed, 28 insertions(+), 8 deletions(-)
diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index 1dc71fe5f0..bd3bce3623 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -716,28 +716,48 @@ uint32_t HELPER(clcle)(CPUS390XState *env, uint32_t r1,
uint64_t a2,
uint64_t srclen = get_length(env, r3 + 1);
uint64_t src = get_address(env, r3);
uint8_t pad = a2 & 0xff;
+ uint64_t len = MAX(srclen, destlen);
uint32_t cc = 0;
if (!(destlen || srclen)) {