/*
* Copyright (C) 2011-2021 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* Description:
* The file provides `enclave_entry' function to switch code between
* trusted and untrusted envronment.
*/
.file "trts_pic.S"
#include "linux-regs.h"
/*
* ------------------------------------------------------------------------
* extern "C" int do_egetkey(key_request_t *key_request, key_128bit_t *key)
* return value:
* 0 - success
* none-zeor - EGETKEY error code
* EGETKEY: rbx - the address of KEYREQUEST structure
* rcx - the address where the key is outputted
* ------------------------------------------------------------------------
*/
DECLARE_LOCAL_FUNC do_egetkey
SE_PROLOG
mov $SE_EGETKEY, %xax /* EGETKEY leaf */
ENCLU
#ifdef SE_SIM
cmp $SGX_SUCCESS, %xax /* In simulation mode, ZF flag will not be set */
jnz .Legetkey_done /* because the stack clean operation will always clean ZF flag */
#else
jz .Legetkey_done /* if EGETKEY error, ZF flag is set and error code is set to xax */
#endif
xor %xax, %xax
.Legetkey_done:
SE_EPILOG
/*
* -------------------------------------------------------------------------
* extern "C" int do_ereport(sgx_target_info_t *target_info, sgx_report_data_t *report_data, sgx_report_t *report);
* EREPORT: rbx - the address of TARGETINFO;
* rcx - the address of REPORTDATA;
* rdx - the address where REPORT is outputted
* return value:
* zero: success
* non-zero: failure
* -------------------------------------------------------------------------
*/
.global Lereport_inst
DECLARE_LOCAL_FUNC do_ereport
SE_PROLOG
mov $SE_EREPORT, %xax /* EREPORT leaf */
clc
Lereport_inst:
ENCLU
setc %al
SE_EPILOG