[PATCH v9 01/21] target/s390x: Fix wrong address handling in address loops

[Harald Freudenberger <freude@linux.ibm.com>]

The loop increments addr by the element stride (+= 4) before calling
wrap_address, but then overwrites the loop addr with the wrapped
value. On the next iteration the stride is applied to the wrapped
address of the previous element, not to the original unwrapped
address. This results in every element after the first is read from a
wrong (wrapped) address.

Fixes: 9f17bfdab4 ("target/s390x: support SHA-512 extensions")
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
---
 target/s390x/tcg/crypto_helper.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/target/s390x/tcg/crypto_helper.c b/target/s390x/tcg/crypto_helper.c
index ae392bce0e..8fe0a22219 100644
--- a/target/s390x/tcg/crypto_helper.c
+++ b/target/s390x/tcg/crypto_helper.c
@@ -126,8 +126,7 @@ static void sha512_read_icv(CPUS390XState *env, const int mmu_idx,
     const MemOpIdx oi = make_memop_idx(MO_BE | MO_64 | MO_UNALN, mmu_idx);
 
     for (int i = 0; i < 8; i++, addr += 8) {
-        addr = wrap_address(env, addr);
-        a[i] = cpu_ldq_mmu(env, addr, oi, ra);
+        a[i] = cpu_ldq_mmu(env, wrap_address(env, addr), oi, ra);
     }
 }
 
@@ -137,8 +136,7 @@ static void sha512_write_ocv(CPUS390XState *env, const int mmu_idx,
     const MemOpIdx oi = make_memop_idx(MO_BE | MO_64 | MO_UNALN, mmu_idx);
 
     for (int i = 0; i < 8; i++, addr += 8) {
-        addr = wrap_address(env, addr);
-        cpu_stq_mmu(env, addr, a[i], oi, ra);
+        cpu_stq_mmu(env, wrap_address(env, addr), a[i], oi, ra);
     }
 }
 
@@ -148,8 +146,7 @@ static void sha512_read_block(CPUS390XState *env, const int mmu_idx,
     const MemOpIdx oi = make_memop_idx(MO_BE | MO_64 | MO_UNALN, mmu_idx);
 
     for (int i = 0; i < 16; i++, addr += 8) {
-        addr = wrap_address(env, addr);
-        a[i] = cpu_ldq_mmu(env, addr, oi, ra);
+        a[i] = cpu_ldq_mmu(env, wrap_address(env, addr), oi, ra);
     }
 }
 
@@ -159,8 +156,7 @@ static void sha512_read_mbl_be64(CPUS390XState *env, const int mmu_idx,
     const MemOpIdx oi = make_memop_idx(MO_8, mmu_idx);
 
     for (int i = 0; i < 16; i++, addr += 1) {
-        addr = wrap_address(env, addr);
-        a[i] = cpu_ldb_mmu(env, addr, oi, ra);
+        a[i] = cpu_ldb_mmu(env, wrap_address(env, addr), oi, ra);
     }
 }
 
-- 
2.43.0