Merge pull request #1199 from davidhorstmann-arm/invert-buffer-protection-option

Invert and rename buffer protection config option
diff --git a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
index 3f2937a..37af264 100644
--- a/include/mbedtls/mbedtls_config.h
+++ b/include/mbedtls/mbedtls_config.h
@@ -1469,20 +1469,24 @@
 //#define MBEDTLS_PSA_INJECT_ENTROPY
 
 /**
- * \def MBEDTLS_PSA_COPY_CALLER_BUFFERS
+ * \def MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS
  *
- * Make local copies of buffers supplied by the callers of PSA functions.
+ * Assume all buffers passed to PSA functions are owned exclusively by the
+ * PSA function and are not stored in shared memory.
  *
- * This should be enabled whenever caller-supplied buffers are owned by
- * an untrusted party, for example where arguments to PSA calls are passed
+ * This option may be enabled if all buffers passed to any PSA function reside
+ * in memory that is accessible only to the PSA function during its execution.
+ *
+ * This option MUST be disabled whenever buffer arguments are in memory shared
+ * with an untrusted party, for example where arguments to PSA calls are passed
  * across a trust boundary.
  *
- * \note Enabling this option increases memory usage and code size.
+ * \note Enabling this option reduces memory usage and code size.
  *
- * \note Disabling this option causes overlap of input and output buffers
+ * \note Enabling this option causes overlap of input and output buffers
  *       not to be supported by PSA functions.
  */
-#define MBEDTLS_PSA_COPY_CALLER_BUFFERS
+//#define MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS
 
 /**
  * \def MBEDTLS_RSA_NO_CRT
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 5ba94c4..e187560 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -105,7 +105,7 @@
     if (global_data.initialized == 0)  \
     return PSA_ERROR_BAD_STATE;
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 
 /* Declare a local copy of an input buffer and a variable that will be used
  * to store a pointer to the start of the buffer.
@@ -201,7 +201,7 @@
             status = local_output_status; \
         } \
     } while (0)
-#else /* MBEDTLS_PSA_COPY_CALLER_BUFFERS */
+#else /* !MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS */
 #define LOCAL_INPUT_DECLARE(input, input_copy_name) \
     const uint8_t *input_copy_name = NULL;
 #define LOCAL_INPUT_ALLOC(input, length, input_copy) \
@@ -214,7 +214,7 @@
     output_copy = output;
 #define LOCAL_OUTPUT_FREE(output, output_copy) \
     output_copy = NULL;
-#endif /* MBEDTLS_PSA_COPY_CALLER_BUFFERS */
+#endif /* !MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS */
 
 
 int psa_can_do_hash(psa_algorithm_t hash_alg)
@@ -1447,7 +1447,7 @@
                                            slot->key.data, slot->key.bytes,
                                            data, data_size, data_length);
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     unlock_status = psa_unregister_read_under_mutex(slot);
@@ -2315,7 +2315,7 @@
     LOCAL_OUTPUT_ALLOC(hash_external, hash_size, hash);
     status = psa_hash_finish_internal(operation, hash, hash_size, hash_length);
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     LOCAL_OUTPUT_FREE(hash_external, hash);
@@ -2378,7 +2378,7 @@
     status = psa_driver_wrapper_hash_compute(alg, input, input_length,
                                              hash, hash_size, hash_length);
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     LOCAL_INPUT_FREE(input_external, input);
@@ -2615,7 +2615,7 @@
         psa_mac_abort(operation);
     }
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     LOCAL_INPUT_FREE(input_external, input);
@@ -2794,7 +2794,7 @@
                                       input, input_length,
                                       mac, mac_size, mac_length, 1);
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     LOCAL_INPUT_FREE(input_external, input);
@@ -3033,7 +3033,7 @@
     status = psa_sign_internal(key, 1, alg, input, input_length, signature,
                                signature_size, signature_length);
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     LOCAL_INPUT_FREE(input_external, input);
@@ -3091,7 +3091,7 @@
     status = psa_verify_internal(key, 1, alg, input, input_length, signature,
                                  signature_length);
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     LOCAL_INPUT_FREE(input_external, input);
@@ -3165,7 +3165,7 @@
     status = psa_sign_internal(key, 0, alg, hash, hash_length, signature,
                                signature_size, signature_length);
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     LOCAL_INPUT_FREE(hash_external, hash);
@@ -3237,7 +3237,7 @@
     status = psa_verify_internal(key, 0, alg, hash, hash_length, signature,
                                  signature_length);
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     LOCAL_INPUT_FREE(hash_external, hash);
@@ -3618,7 +3618,7 @@
                                                   slot->key.bytes,
                                                   alg, hash, hash_length,
                                                   signature, signature_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
 
@@ -5036,7 +5036,7 @@
     status = psa_aead_set_nonce_internal(operation, nonce, nonce_length);
 
 /* Exit label is only needed for buffer copying, prevent unused warnings. */
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
 
@@ -7337,7 +7337,7 @@
     status = psa_key_derivation_input_internal(operation, step,
                                                PSA_KEY_TYPE_NONE,
                                                data, data_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     LOCAL_INPUT_FREE(data_external, data);
@@ -7527,7 +7527,7 @@
                                         slot,
                                         peer_key, peer_key_length);
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     if (status != PSA_SUCCESS) {
@@ -7699,7 +7699,7 @@
 
     status = psa_generate_random_internal(output, output_size);
 
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
 exit:
 #endif
     LOCAL_OUTPUT_FREE(output_external, output);
diff --git a/scripts/config.py b/scripts/config.py
index ab0e5ea..c53f9e7 100755
--- a/scripts/config.py
+++ b/scripts/config.py
@@ -198,6 +198,7 @@
     'MBEDTLS_NO_UDBL_DIVISION', # influences anything that uses bignum
     'MBEDTLS_PSA_P256M_DRIVER_ENABLED', # influences SECP256R1 KeyGen/ECDH/ECDSA
     'MBEDTLS_PLATFORM_NO_STD_FUNCTIONS', # removes a feature
+    'MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS', # removes a feature
     'MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG', # behavior change + build dependency
     'MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER', # incompatible with USE_PSA_CRYPTO
     'MBEDTLS_PSA_CRYPTO_SPM', # platform dependency (PSA SPM)
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 66bba9c..667f850 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -1260,14 +1260,14 @@
     make test
 }
 
-component_test_no_psa_copy_caller_buffers () {
-    msg "build: full config - MBEDTLS_PSA_COPY_CALLER_BUFFERS, cmake, gcc, ASan"
+component_test_psa_assume_exclusive_buffers () {
+    msg "build: full config + MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS, cmake, gcc, ASan"
     scripts/config.py full
-    scripts/config.py unset MBEDTLS_PSA_COPY_CALLER_BUFFERS
+    scripts/config.py set MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS
     CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
     make
 
-    msg "test: full config - MBEDTLS_PSA_COPY_CALLER_BUFFERS, cmake, gcc, ASan"
+    msg "test: full config + MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS, cmake, gcc, ASan"
     make test
 }
 
diff --git a/tests/scripts/generate_psa_wrappers.py b/tests/scripts/generate_psa_wrappers.py
index 1a05c75..07d1450 100755
--- a/tests/scripts/generate_psa_wrappers.py
+++ b/tests/scripts/generate_psa_wrappers.py
@@ -132,10 +132,10 @@
         """
         if not buffer_parameters:
             return
-        out.write('#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)\n')
+        out.write('#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)\n')
         for param in buffer_parameters:
             self._write_poison_buffer_parameter(out, param, poison)
-        out.write('#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */\n')
+        out.write('#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */\n')
 
     @staticmethod
     def _parameter_should_be_copied(function_name: str,
diff --git a/tests/src/helpers.c b/tests/src/helpers.c
index be9155c..065d17d 100644
--- a/tests/src/helpers.c
+++ b/tests/src/helpers.c
@@ -318,7 +318,7 @@
     int ret = 0;
 
 #if defined(MBEDTLS_TEST_HOOKS) && defined(MBEDTLS_PSA_CRYPTO_C) \
-    && defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) \
+    && !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) \
     && defined(MBEDTLS_TEST_MEMORY_CAN_POISON)
     mbedtls_poison_test_hooks_setup();
 #endif
@@ -348,7 +348,7 @@
 void mbedtls_test_platform_teardown(void)
 {
 #if defined(MBEDTLS_TEST_HOOKS) && defined(MBEDTLS_PSA_CRYPTO_C) \
-    && defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) \
+    && !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) \
     &&  defined(MBEDTLS_TEST_MEMORY_CAN_POISON)
     mbedtls_poison_test_hooks_teardown();
 #endif
diff --git a/tests/src/psa_test_wrappers.c b/tests/src/psa_test_wrappers.c
index b030431..809f1cd 100644
--- a/tests/src/psa_test_wrappers.c
+++ b/tests/src/psa_test_wrappers.c
@@ -70,19 +70,19 @@
     size_t arg9_plaintext_size,
     size_t *arg10_plaintext_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_nonce, arg3_nonce_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_additional_data, arg5_additional_data_length);
     MBEDTLS_TEST_MEMORY_POISON(arg6_ciphertext, arg7_ciphertext_length);
     MBEDTLS_TEST_MEMORY_POISON(arg8_plaintext, arg9_plaintext_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_aead_decrypt)(arg0_key, arg1_alg, arg2_nonce, arg3_nonce_length, arg4_additional_data, arg5_additional_data_length, arg6_ciphertext, arg7_ciphertext_length, arg8_plaintext, arg9_plaintext_size, arg10_plaintext_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_nonce, arg3_nonce_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_additional_data, arg5_additional_data_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg6_ciphertext, arg7_ciphertext_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg8_plaintext, arg9_plaintext_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -110,19 +110,19 @@
     size_t arg9_ciphertext_size,
     size_t *arg10_ciphertext_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_nonce, arg3_nonce_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_additional_data, arg5_additional_data_length);
     MBEDTLS_TEST_MEMORY_POISON(arg6_plaintext, arg7_plaintext_length);
     MBEDTLS_TEST_MEMORY_POISON(arg8_ciphertext, arg9_ciphertext_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_aead_encrypt)(arg0_key, arg1_alg, arg2_nonce, arg3_nonce_length, arg4_additional_data, arg5_additional_data_length, arg6_plaintext, arg7_plaintext_length, arg8_ciphertext, arg9_ciphertext_size, arg10_ciphertext_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_nonce, arg3_nonce_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_additional_data, arg5_additional_data_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg6_plaintext, arg7_plaintext_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg8_ciphertext, arg9_ciphertext_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -146,15 +146,15 @@
     size_t arg5_tag_size,
     size_t *arg6_tag_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_ciphertext, arg2_ciphertext_size);
     MBEDTLS_TEST_MEMORY_POISON(arg4_tag, arg5_tag_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_aead_finish)(arg0_operation, arg1_ciphertext, arg2_ciphertext_size, arg3_ciphertext_length, arg4_tag, arg5_tag_size, arg6_tag_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_ciphertext, arg2_ciphertext_size);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_tag, arg5_tag_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -165,13 +165,13 @@
     size_t arg2_nonce_size,
     size_t *arg3_nonce_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_nonce, arg2_nonce_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_aead_generate_nonce)(arg0_operation, arg1_nonce, arg2_nonce_size, arg3_nonce_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_nonce, arg2_nonce_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -191,13 +191,13 @@
     const uint8_t *arg1_nonce,
     size_t arg2_nonce_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_nonce, arg2_nonce_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_aead_set_nonce)(arg0_operation, arg1_nonce, arg2_nonce_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_nonce, arg2_nonce_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -210,15 +210,15 @@
     size_t arg4_output_size,
     size_t *arg5_output_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg3_output, arg4_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_aead_update)(arg0_operation, arg1_input, arg2_input_length, arg3_output, arg4_output_size, arg5_output_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg3_output, arg4_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -228,13 +228,13 @@
     const uint8_t *arg1_input,
     size_t arg2_input_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_aead_update_ad)(arg0_operation, arg1_input, arg2_input_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -247,15 +247,15 @@
     const uint8_t *arg4_tag,
     size_t arg5_tag_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_plaintext, arg2_plaintext_size);
     MBEDTLS_TEST_MEMORY_POISON(arg4_tag, arg5_tag_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_aead_verify)(arg0_operation, arg1_plaintext, arg2_plaintext_size, arg3_plaintext_length, arg4_tag, arg5_tag_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_plaintext, arg2_plaintext_size);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_tag, arg5_tag_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -271,17 +271,17 @@
     size_t arg7_output_size,
     size_t *arg8_output_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_salt, arg5_salt_length);
     MBEDTLS_TEST_MEMORY_POISON(arg6_output, arg7_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_asymmetric_decrypt)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_salt, arg5_salt_length, arg6_output, arg7_output_size, arg8_output_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_salt, arg5_salt_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg6_output, arg7_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -297,17 +297,17 @@
     size_t arg7_output_size,
     size_t *arg8_output_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_salt, arg5_salt_length);
     MBEDTLS_TEST_MEMORY_POISON(arg6_output, arg7_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_asymmetric_encrypt)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_salt, arg5_salt_length, arg6_output, arg7_output_size, arg8_output_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_salt, arg5_salt_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg6_output, arg7_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -329,15 +329,15 @@
     size_t arg5_output_size,
     size_t *arg6_output_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_output, arg5_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_cipher_decrypt)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_output, arg5_output_size, arg6_output_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_output, arg5_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -361,15 +361,15 @@
     size_t arg5_output_size,
     size_t *arg6_output_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_output, arg5_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_cipher_encrypt)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_output, arg5_output_size, arg6_output_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_output, arg5_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -390,13 +390,13 @@
     size_t arg2_output_size,
     size_t *arg3_output_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_output, arg2_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_cipher_finish)(arg0_operation, arg1_output, arg2_output_size, arg3_output_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_output, arg2_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -407,13 +407,13 @@
     size_t arg2_iv_size,
     size_t *arg3_iv_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_iv, arg2_iv_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_cipher_generate_iv)(arg0_operation, arg1_iv, arg2_iv_size, arg3_iv_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_iv, arg2_iv_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -423,13 +423,13 @@
     const uint8_t *arg1_iv,
     size_t arg2_iv_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_iv, arg2_iv_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_cipher_set_iv)(arg0_operation, arg1_iv, arg2_iv_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_iv, arg2_iv_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -442,15 +442,15 @@
     size_t arg4_output_size,
     size_t *arg5_output_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg3_output, arg4_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_cipher_update)(arg0_operation, arg1_input, arg2_input_length, arg3_output, arg4_output_size, arg5_output_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg3_output, arg4_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -555,13 +555,13 @@
     size_t arg2_data_size,
     size_t *arg3_data_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_data, arg2_data_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_export_key)(arg0_key, arg1_data, arg2_data_size, arg3_data_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_data, arg2_data_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -572,13 +572,13 @@
     size_t arg2_data_size,
     size_t *arg3_data_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_data, arg2_data_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_export_public_key)(arg0_key, arg1_data, arg2_data_size, arg3_data_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_data, arg2_data_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -607,13 +607,13 @@
     uint8_t *arg0_output,
     size_t arg1_output_size)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg0_output, arg1_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_generate_random)(arg0_output, arg1_output_size);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg0_output, arg1_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -651,15 +651,15 @@
     const uint8_t *arg3_hash,
     size_t arg4_hash_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg3_hash, arg4_hash_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_hash_compare)(arg0_alg, arg1_input, arg2_input_length, arg3_hash, arg4_hash_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg3_hash, arg4_hash_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -672,15 +672,15 @@
     size_t arg4_hash_size,
     size_t *arg5_hash_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg3_hash, arg4_hash_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_hash_compute)(arg0_alg, arg1_input, arg2_input_length, arg3_hash, arg4_hash_size, arg5_hash_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg3_hash, arg4_hash_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -691,13 +691,13 @@
     size_t arg2_hash_size,
     size_t *arg3_hash_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_hash, arg2_hash_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_hash_finish)(arg0_operation, arg1_hash, arg2_hash_size, arg3_hash_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_hash, arg2_hash_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -716,13 +716,13 @@
     const uint8_t *arg1_input,
     size_t arg2_input_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_hash_update)(arg0_operation, arg1_input, arg2_input_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -732,13 +732,13 @@
     const uint8_t *arg1_hash,
     size_t arg2_hash_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_hash, arg2_hash_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_hash_verify)(arg0_operation, arg1_hash, arg2_hash_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_hash, arg2_hash_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -749,13 +749,13 @@
     size_t arg2_data_length,
     mbedtls_svc_key_id_t *arg3_key)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_data, arg2_data_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_import_key)(arg0_attributes, arg1_data, arg2_data_length, arg3_key);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_data, arg2_data_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -783,13 +783,13 @@
     const uint8_t *arg2_data,
     size_t arg3_data_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_data, arg3_data_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_key_derivation_input_bytes)(arg0_operation, arg1_step, arg2_data, arg3_data_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_data, arg3_data_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -821,13 +821,13 @@
     const uint8_t *arg3_peer_key,
     size_t arg4_peer_key_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg3_peer_key, arg4_peer_key_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_key_derivation_key_agreement)(arg0_operation, arg1_step, arg2_private_key, arg3_peer_key, arg4_peer_key_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg3_peer_key, arg4_peer_key_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -837,13 +837,13 @@
     uint8_t *arg1_output,
     size_t arg2_output_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_output, arg2_output_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_key_derivation_output_bytes)(arg0_operation, arg1_output, arg2_output_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_output, arg2_output_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -905,15 +905,15 @@
     size_t arg5_mac_size,
     size_t *arg6_mac_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_mac, arg5_mac_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_mac_compute)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_mac, arg5_mac_size, arg6_mac_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_mac, arg5_mac_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -924,13 +924,13 @@
     size_t arg2_mac_size,
     size_t *arg3_mac_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_mac, arg2_mac_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_mac_sign_finish)(arg0_operation, arg1_mac, arg2_mac_size, arg3_mac_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_mac, arg2_mac_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -950,13 +950,13 @@
     const uint8_t *arg1_input,
     size_t arg2_input_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_mac_update)(arg0_operation, arg1_input, arg2_input_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -969,15 +969,15 @@
     const uint8_t *arg4_mac,
     size_t arg5_mac_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_mac, arg5_mac_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_mac_verify)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_mac, arg5_mac_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_mac, arg5_mac_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -987,13 +987,13 @@
     const uint8_t *arg1_mac,
     size_t arg2_mac_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_mac, arg2_mac_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_mac_verify_finish)(arg0_operation, arg1_mac, arg2_mac_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_mac, arg2_mac_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1031,13 +1031,13 @@
     const uint8_t *arg2_input,
     size_t arg3_input_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_pake_input)(arg0_operation, arg1_step, arg2_input, arg3_input_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1049,13 +1049,13 @@
     size_t arg3_output_size,
     size_t *arg4_output_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_output, arg3_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_pake_output)(arg0_operation, arg1_step, arg2_output, arg3_output_size, arg4_output_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_output, arg3_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1074,13 +1074,13 @@
     const uint8_t *arg1_peer_id,
     size_t arg2_peer_id_len)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_peer_id, arg2_peer_id_len);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_pake_set_peer)(arg0_operation, arg1_peer_id, arg2_peer_id_len);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_peer_id, arg2_peer_id_len);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1099,13 +1099,13 @@
     const uint8_t *arg1_user_id,
     size_t arg2_user_id_len)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_user_id, arg2_user_id_len);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_pake_set_user)(arg0_operation, arg1_user_id, arg2_user_id_len);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_user_id, arg2_user_id_len);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1136,15 +1136,15 @@
     size_t arg5_output_size,
     size_t *arg6_output_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_peer_key, arg3_peer_key_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_output, arg5_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_raw_key_agreement)(arg0_alg, arg1_private_key, arg2_peer_key, arg3_peer_key_length, arg4_output, arg5_output_size, arg6_output_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_peer_key, arg3_peer_key_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_output, arg5_output_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1158,15 +1158,15 @@
     size_t arg5_signature_size,
     size_t *arg6_signature_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_hash, arg3_hash_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_signature, arg5_signature_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_sign_hash)(arg0_key, arg1_alg, arg2_hash, arg3_hash_length, arg4_signature, arg5_signature_size, arg6_signature_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_hash, arg3_hash_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_signature, arg5_signature_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1185,13 +1185,13 @@
     size_t arg2_signature_size,
     size_t *arg3_signature_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg1_signature, arg2_signature_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_sign_hash_complete)(arg0_operation, arg1_signature, arg2_signature_size, arg3_signature_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg1_signature, arg2_signature_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1203,13 +1203,13 @@
     const uint8_t *arg3_hash,
     size_t arg4_hash_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg3_hash, arg4_hash_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_sign_hash_start)(arg0_operation, arg1_key, arg2_alg, arg3_hash, arg4_hash_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg3_hash, arg4_hash_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1223,15 +1223,15 @@
     size_t arg5_signature_size,
     size_t *arg6_signature_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_signature, arg5_signature_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_sign_message)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_signature, arg5_signature_size, arg6_signature_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_signature, arg5_signature_size);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1244,15 +1244,15 @@
     const uint8_t *arg4_signature,
     size_t arg5_signature_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_hash, arg3_hash_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_signature, arg5_signature_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_verify_hash)(arg0_key, arg1_alg, arg2_hash, arg3_hash_length, arg4_signature, arg5_signature_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_hash, arg3_hash_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_signature, arg5_signature_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1282,15 +1282,15 @@
     const uint8_t *arg5_signature,
     size_t arg6_signature_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg3_hash, arg4_hash_length);
     MBEDTLS_TEST_MEMORY_POISON(arg5_signature, arg6_signature_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_verify_hash_start)(arg0_operation, arg1_key, arg2_alg, arg3_hash, arg4_hash_length, arg5_signature, arg6_signature_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg3_hash, arg4_hash_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg5_signature, arg6_signature_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }
 
@@ -1303,15 +1303,15 @@
     const uint8_t *arg4_signature,
     size_t arg5_signature_length)
 {
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_POISON(arg4_signature, arg5_signature_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     psa_status_t status = (psa_verify_message)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_signature, arg5_signature_length);
-#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+#if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS)
     MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
     MBEDTLS_TEST_MEMORY_UNPOISON(arg4_signature, arg5_signature_length);
-#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
+#endif /* !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) */
     return status;
 }