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 32#include <machine/asmacros.h> 33#include <amd64/sgx/sgxvar.h> 34 35#include "assym.inc" 36 37 .text 38 39/* 40 * int 41 * sgx_encls(uint32_t eax, uint64_t rbx, uint64_t rcx, uint64_t rdx); 42 * %edi, %rsi, %rdx, %rcx 43 */ 44ENTRY(sgx_encls) 45 PUSH_FRAME_POINTER 46 pushq %rbx 47 movq PCPU(CURPCB),%r8 48 movl %edi,%eax 49 movq %rsi,%rbx 50 xchgq %rdx,%rcx 51 movq $sgx_onfault,PCB_ONFAULT(%r8) 52 .byte 0x0f, 0x01, 0xcf 53 movq $0,PCB_ONFAULT(%r8) 54 popq %rbx 55 POP_FRAME_POINTER 56 ret 57END(sgx_encls) 58 59/* 60 * SGX operations fault handler 61 */ 62 ALIGN_TEXT 63sgx_onfault: 64 movq $0,PCB_ONFAULT(%r8) 65 movl $SGX_EFAULT,%eax 66 popq %rbx 67 POP_FRAME_POINTER 68 ret 69