Add a very simple exit handler and use it as a third variant of the SGX
selftest to verify that the vDSO invokes then user's handler when one is
supplied.
Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
---
tools/testing/selftests/sgx/main.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/tools/testing/selftests/sgx/main.c b/tools/testing/selftests/sgx/main.c
index 158ea9e2b6d3a..44acb3c720675 100644
--- a/tools/testing/selftests/sgx/main.c
+++ b/tools/testing/selftests/sgx/main.c
@@ -137,10 +137,21 @@ int check_result(struct sgx_enclave_run *run, int ret, uint64_t result,
printf("FAIL: %s(), expected: 0x%lx, got: 0x%lx\n",
test, MAGIC, result);
return -EIO;
+ } else if (run->user_data) {
+ printf("FAIL: %s() user data, expected: 0x0, got: 0x%llx\n",
+ test, run->user_data);
+ return -EIO;
}
return 0;
}
+static int exit_handler(long rdi, long rsi, long rdx, long ursp, long r8, long r9,
+ struct sgx_enclave_run *run)
+{
+ run->user_data = 0;
+ return 0;
+}
+
int main(int argc, char *argv[], char *envp[])
{
struct sgx_enclave_run run;
@@ -203,6 +214,14 @@ int main(int argc, char *argv[], char *envp[])
if (check_result(&run, ret, result, "eenter"))
goto err;
+ /* And with an exit handler. */
+ run.user_handler = exit_handler;
+ run.user_data = 0xdeadbeef;
+ ret = eenter((unsigned long)&MAGIC, (unsigned long)&result, 0, EENTER,
+ 0, 0, &run);
+ if (check_result(&run, ret, result, "exit_handler"))
+ goto err;
+
printf("SUCCESS\n");
encl_delete(&encl);
exit(0);
--
2.28.0
