1/*- 2 * Copyright (c) 2017 Ruslan Bukin <br@bsdpad.com> 3 * All rights reserved. 4 * 5 * This software was developed by BAE Systems, the University of Cambridge 6 * Computer Laboratory, and Memorial University under DARPA/AFRL contract 7 * FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing 8 * (TC) research program. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD$ 32 */ 33 34#include <machine/asmacros.h> 35#include <amd64/sgx/sgxvar.h> 36 37#include "assym.s" 38 39 .text 40 41/* 42 * int 43 * sgx_encls(uint32_t eax, uint64_t rbx, uint64_t rcx, uint64_t rdx); 44 * %edi, %rsi, %rdx, %rcx 45 */ 46ENTRY(sgx_encls) 47 PUSH_FRAME_POINTER 48 pushq %rbx 49 movq PCPU(CURPCB),%r8 50 movl %edi,%eax 51 movq %rsi,%rbx 52 xchgq %rdx,%rcx 53 movq $sgx_onfault,PCB_ONFAULT(%r8) 54 .byte 0x0f, 0x01, 0xcf 55 movq $0,PCB_ONFAULT(%r8) 56 popq %rbx 57 POP_FRAME_POINTER 58 ret 59END(sgx_encls) 60 61/* 62 * SGX operations fault handler 63 */ 64 ALIGN_TEXT 65sgx_onfault: 66 movq $0,PCB_ONFAULT(%r8) 67 movl $SGX_EFAULT,%eax 68 popq %rbx 69 POP_FRAME_POINTER 70 ret 71