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From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: Nathaniel McCallum <npmccallum@redhat.com>,
	Cedric Xing <cedric.xing@intel.com>,
	Jethro Beekman <jethro@fortanix.com>,
	Andy Lutomirski <luto@amacapital.net>,
	linux-sgx@vger.kernel.org
Subject: [PATCH for_v29 6/8] selftests/x86: sgx: Pass EENTER to vDSO wrapper instead of hardcoding
Date: Wed, 18 Mar 2020 18:11:28 -0700
Message-ID: <20200319011130.8556-7-sean.j.christopherson@intel.com> (raw)
In-Reply-To: <20200319011130.8556-1-sean.j.christopherson@intel.com>

Pass EENTER to the vDSO wrapper via %ecx instead of hardcoding it to
make the wrapper compatible with the new vDSO calling convention.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
---
 tools/testing/selftests/x86/sgx/main.c     | 2 +-
 tools/testing/selftests/x86/sgx/sgx_call.S | 1 -
 tools/testing/selftests/x86/sgx/sgx_call.h | 2 +-
 3 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/x86/sgx/main.c b/tools/testing/selftests/x86/sgx/main.c
index c9c37d2bbec8..9b89946a976b 100644
--- a/tools/testing/selftests/x86/sgx/main.c
+++ b/tools/testing/selftests/x86/sgx/main.c
@@ -367,7 +367,7 @@ int main(int argc, char *argv[], char *envp[])
 	printf("Input: 0x%lx\n", MAGIC);
 
 	result = 0;
-	sgx_call_vdso((void *)&MAGIC, &result, 0, NULL, NULL, NULL,
+	sgx_call_vdso((void *)&MAGIC, &result, 0, 2, NULL, NULL,
 		      (void *)secs.base, &exception, NULL);
 	if (result != MAGIC) {
 		fprintf(stderr, "0x%lx != 0x%lx\n", result, MAGIC);
diff --git a/tools/testing/selftests/x86/sgx/sgx_call.S b/tools/testing/selftests/x86/sgx/sgx_call.S
index e71f44f7a995..79b4c80e4a1c 100644
--- a/tools/testing/selftests/x86/sgx/sgx_call.S
+++ b/tools/testing/selftests/x86/sgx/sgx_call.S
@@ -48,7 +48,6 @@ sgx_call_vdso:
 	.cfi_adjust_cfa_offset	8
 	push	0x48(%rsp)
 	.cfi_adjust_cfa_offset	8
-	mov	$2, %eax
 	call	*eenter(%rip)
 	add	$0x20, %rsp
 	.cfi_adjust_cfa_offset	-0x20
diff --git a/tools/testing/selftests/x86/sgx/sgx_call.h b/tools/testing/selftests/x86/sgx/sgx_call.h
index a4072c5ecce7..02f1ef292823 100644
--- a/tools/testing/selftests/x86/sgx/sgx_call.h
+++ b/tools/testing/selftests/x86/sgx/sgx_call.h
@@ -8,7 +8,7 @@
 
 void sgx_call_eenter(void *rdi, void *rsi, void *entry);
 
-int sgx_call_vdso(void *rdi, void *rsi, long rdx, void *rcx, void *r8, void *r9,
+int sgx_call_vdso(void *rdi, void *rsi, long rdx, long rcx, void *r8, void *r9,
 		  void *tcs, struct sgx_enclave_exception *ei, void *cb);
 
 #endif /* SGX_CALL_H */
-- 
2.24.1


  parent reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-19  1:11 [PATCH for_v29 0/8] x86/sgx: Make vDSO callable from C Sean Christopherson
2020-03-19  1:11 ` [PATCH for_v29 1/8] x86/sgx: vdso: Remove an incorrect statement the enter enclave comment Sean Christopherson
2020-03-19 20:49   ` Jarkko Sakkinen
2020-03-19  1:11 ` [PATCH for_v29 2/8] x86/sgx: vdso: Make the %rsp fixup on return from handler relative Sean Christopherson
2020-03-20  2:39   ` Jarkko Sakkinen
2020-03-20  2:42     ` Jarkko Sakkinen
2020-03-19  1:11 ` [PATCH for_v29 3/8] x86/sgx: vdso: Make __vdso_sgx_enter_enclave() callable from C code Sean Christopherson
2020-03-19 20:03   ` Xing, Cedric
2020-03-19 20:11     ` Sean Christopherson
2020-03-20  3:07       ` Jarkko Sakkinen
2020-03-20 23:26         ` Sean Christopherson
2020-03-21  0:57           ` Jarkko Sakkinen
2020-03-19  1:11 ` [PATCH for_v29 4/8] x86/sgx: vdso: Define a typedef for __vdso_sgx_enter_enclave Sean Christopherson
2020-03-19  1:11 ` [PATCH for_v29 5/8] selftests/x86: sgx: Zero out @result before invoking vDSO sub-test Sean Christopherson
2020-03-19  1:11 ` Sean Christopherson [this message]
2020-03-19  1:11 ` [PATCH for_v29 7/8] selftests/x86: sgx: Stop clobbering non-volatile registers Sean Christopherson
2020-03-19  1:11 ` [PATCH for_v29 8/8] selftests/x86: Add selftest to invoke __vsgx_enter_enclave() from C Sean Christopherson
2020-03-20  0:57 ` [PATCH for_v29 0/8] x86/sgx: Make vDSO callable " Jarkko Sakkinen
2020-03-20 23:25   ` Sean Christopherson
2020-03-21  0:55     ` Jarkko Sakkinen
2020-03-21 20:11       ` Sean Christopherson

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