linux/tools/testing/selftests/sgx/call.S
Jarkko Sakkinen 2adcba79e6 selftests/x86: Add a selftest for SGX
Add a selftest for SGX. It is a trivial test where a simple enclave
copies one 64-bit word of memory between two memory locations,
but ensures that all SGX hardware and software infrastructure is
functioning.

Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Jethro Beekman <jethro@fortanix.com>
Cc: linux-kselftest@vger.kernel.org
Link: https://lkml.kernel.org/r/20201112220135.165028-21-jarkko@kernel.org
2020-11-18 18:04:05 +01:00

45 lines
815 B
ArmAsm

/* SPDX-License-Identifier: GPL-2.0 */
/**
* Copyright(c) 2016-20 Intel Corporation.
*/
.text
.global sgx_call_vdso
sgx_call_vdso:
.cfi_startproc
push %r15
.cfi_adjust_cfa_offset 8
.cfi_rel_offset %r15, 0
push %r14
.cfi_adjust_cfa_offset 8
.cfi_rel_offset %r14, 0
push %r13
.cfi_adjust_cfa_offset 8
.cfi_rel_offset %r13, 0
push %r12
.cfi_adjust_cfa_offset 8
.cfi_rel_offset %r12, 0
push %rbx
.cfi_adjust_cfa_offset 8
.cfi_rel_offset %rbx, 0
push $0
.cfi_adjust_cfa_offset 8
push 0x38(%rsp)
.cfi_adjust_cfa_offset 8
call *eenter(%rip)
add $0x10, %rsp
.cfi_adjust_cfa_offset -0x10
pop %rbx
.cfi_adjust_cfa_offset -8
pop %r12
.cfi_adjust_cfa_offset -8
pop %r13
.cfi_adjust_cfa_offset -8
pop %r14
.cfi_adjust_cfa_offset -8
pop %r15
.cfi_adjust_cfa_offset -8
ret
.cfi_endproc