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/*-
* Copyright (c) 2017 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* This software was developed by BAE Systems, the University of Cambridge
* Computer Laboratory, and Memorial University under DARPA/AFRL contract
* FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
* (TC) research program.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#include <machine/asmacros.h>
#include <amd64/sgx/sgxvar.h>
#include "assym.s"
.text
/*
* int
* sgx_encls(uint32_t eax, uint64_t rbx, uint64_t rcx, uint64_t rdx);
* %edi, %rsi, %rdx, %rcx
*/
ENTRY(sgx_encls)
PUSH_FRAME_POINTER
pushq %rbx
movq PCPU(CURPCB),%r8
movl %edi,%eax
movq %rsi,%rbx
xchgq %rdx,%rcx
movq $sgx_onfault,PCB_ONFAULT(%r8)
.byte 0x0f, 0x01, 0xcf
movq $0,PCB_ONFAULT(%r8)
popq %rbx
POP_FRAME_POINTER
ret
END(sgx_encls)
/*
* SGX operations fault handler
*/
ALIGN_TEXT
sgx_onfault:
movq $0,PCB_ONFAULT(%r8)
movl $SGX_EFAULT,%eax
popq %rbx
POP_FRAME_POINTER
ret
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