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9441de4c38
This release is used in conjunction with the linux-sgx-driver Intial release: https://github.com/01org/linux-sgx-driver commit-id: 0e865ce5e6b297a787bcdc12d98bada8174be6d7 Intel-id: 33399 Signed-off-by: Angie Chinchilla <angie.v.chinchilla@intel.com>
138 lines
4.1 KiB
C
138 lines
4.1 KiB
C
/*
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* Copyright (C) 2011-2016 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/* ------------------------------------------------------------
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* Normal function enter/leave wrappers.
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* ------------------------------------------------------------
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*/
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#ifndef _ENTER_ENCLAVE_H_
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#define _ENTER_ENCLAVE_H_
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#include "linux-regs.h"
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#include "rts_cmd.h"
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/* macro for enter_enclave
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* There is no .cfi_xxx to describe unwind information, because we want c++ exception can't across enclave boundary
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*/
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.macro EENTER_PROLOG
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push %xbp
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mov %xsp, %xbp
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#if defined(__i386__)
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push %ebx
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push %esi
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push %edi
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/* These 3 wordsize buffer are used for paddings, so that the
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* stack-boundary can be kept 16-byte aligned.
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*
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* Note that, by default GCC assumes
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* -mpreferred-stack-boundary=4
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* which results to 16 (2^4) byte alignment of stack boundary.
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*
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* | parameters | <- previous frame
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* ==+================+======
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* | return address | ^
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* +----------------+ |
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* | ebp | |
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* +----------------+ 16 bytes <- current frame
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* | ebx | |
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* +----------------+ |
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* | esi | v
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* +----------------+ ----
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* | edi | 4 bytes
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* +----------------+
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* | paddings | 3*4 bytes
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* ==+================+======
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* | ENCLU |
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*/
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sub $(3 * SE_WORDSIZE), %esp
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#elif defined(__x86_64__)
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push %rbx
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push %r12
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push %r13
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push %r14
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push %r15
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/*save 5 parameter*/
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push %r8
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push %rcx
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push %rdx
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push %rsi
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push %rdi
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#else
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# error unknown platform
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#endif
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.endm
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.macro EENTER_EPILOG
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#if defined(__i386__)
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mov -SE_WORDSIZE*1(%ebp), %ebx
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mov -SE_WORDSIZE*2(%ebp), %esi
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mov -SE_WORDSIZE*3(%ebp), %edi
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#elif defined(__x86_64__)
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mov -SE_WORDSIZE*1(%rbp), %rbx
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mov -SE_WORDSIZE*2(%rbp), %r12
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mov -SE_WORDSIZE*3(%rbp), %r13
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mov -SE_WORDSIZE*4(%rbp), %r14
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mov -SE_WORDSIZE*5(%rbp), %r15
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#else
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# error unknown platform
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#endif
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/* don't need recover rdi, rsi, rdx, rcx */
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mov %xbp, %xsp
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pop %xbp
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ret
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.endm
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#if defined(__i386__)
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#define frame_arg0 2*SE_WORDSIZE(%ebp)
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#define frame_arg1 3*SE_WORDSIZE(%ebp)
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#define frame_arg2 4*SE_WORDSIZE(%ebp)
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#define frame_arg3 5*SE_WORDSIZE(%ebp)
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#define frame_arg4 6*SE_WORDSIZE(%ebp)
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#elif defined(__x86_64__)
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#define frame_arg0 -10*SE_WORDSIZE(%rbp)
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#define frame_arg1 -9*SE_WORDSIZE(%rbp)
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#define frame_arg2 -8*SE_WORDSIZE(%rbp)
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#define frame_arg3 -7*SE_WORDSIZE(%rbp)
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#define frame_arg4 -6*SE_WORDSIZE(%rbp)
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#else
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# error unknown platform
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#endif
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//refer sgx_error.h
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#define SE_ERROR_READ_LOCK_FAIL 0xc0002202
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#endif
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