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Initial release of Intel SGX for Linux.
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>
This commit is contained in:
Angie Chinchilla
272
common/inc/internal/linux/linux-regs.h
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272
common/inc/internal/linux/linux-regs.h
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/*
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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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* This header wraps the register names for x86/x64.
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*/
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#ifndef LINUX_REGS_H__
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#define LINUX_REGS_H__
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#if defined(__i386) || defined(__i386__)
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# define LINUX32 1
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# define SE_WORDSIZE 4
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/* Generic argument picker for `naked' functions */
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# define naked_arg0 4(%esp)
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# define naked_arg1 8(%esp)
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# define naked_arg2 12(%esp)
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# define naked_arg3 16(%esp)
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# define xax eax
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# define xbx ebx
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# define xcx ecx
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# define xdx edx
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# define xsi esi
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# define xdi edi
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# define xbp ebp
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# define xsp esp
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#elif defined(__x86_64) || defined(__x86_64__)
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# define LINUX64 1
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# define SE_WORDSIZE 8
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/* For x86_64, the first six parameters are passed by
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* rdi, rsi, rdx, rcx, r8, r9.
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*/
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# define naked_arg0 %rdi
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# define naked_arg1 %rsi
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# define naked_arg2 %rdx
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# define naked_arg3 %rcx
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# define xax rax
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# define xbx rbx
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# define xcx rcx
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# define xdx rdx
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# define xsi rsi
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# define xdi rdi
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# define xbp rbp
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# define xsp rsp
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#else
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# error unknown platform!
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#endif
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/* SE instructions - needs to be sync-up with inst70.h */
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#define SE_EREPORT 0
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#define SE_EGETKEY 1
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#define SE_EENTER 2
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#define SE_EEXIT 4
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#define SE_ECREATE 0
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#define SE_EADD 1
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#define SE_EINIT 2
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#define SE_EREMOVE 3
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/*
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* Macros for GNU assembly
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*/
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.macro ENCLU
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#ifdef SE_SIM
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cmp $SE_EEXIT, %xax
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jne 1f
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/* if leaf is EEXIT, xbp and xsp need to be passed by xdx and xcx */
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mov %xbp, %xdx
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mov %xsp, %xcx
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1:
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push %xdi
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push %xsi
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push %xdx
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push %xcx
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push %xbx
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push %xax
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# ifdef LINUX64
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pop %rdi
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pop %rsi
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pop %rdx
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pop %rcx
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pop %r8
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pop %r9
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# endif
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.type _SE3,@function
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.protected _SE3
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call _SE3
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# ifdef LINUX32
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add $(SE_WORDSIZE * 6), %esp
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# endif
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#else /* SE_SIM */
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.byte 0x0f, 0x01, 0xd7 /* 0xf3 */
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#endif /* !SE_SIM */
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.endm
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/* declare a function with default visibility */
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.macro DECLARE_GLOBAL_FUNC name
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.globl \name
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.type \name, @function
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\name:
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.endm
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/* declare a function with visibility='hidden' */
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.macro DECLARE_LOCAL_FUNC name
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.globl \name
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.hidden \name
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.type \name, @function
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\name:
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.endm
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.macro NAKED_PROLOG
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push %xbp
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mov %xsp, %xbp
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sub $(7 * SE_WORDSIZE), %xsp
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.endm
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.macro NAKED_EPILOG
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mov %xbp, %xsp
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pop %xbp
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.endm
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/* `paramN' (N = 1,2,3,4) should be registers. */
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.macro SET_PARAMS param1:req, param2, param3, param4
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#if defined(LINUX32)
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.ifnb \param4
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mov \param4, 3*SE_WORDSIZE(%esp)
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.endif
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.ifnb \param3
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mov \param3, 2*SE_WORDSIZE(%esp)
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.endif
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.ifnb \param2
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mov \param2, 1*SE_WORDSIZE(%esp)
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.endif
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mov \param1, 0*SE_WORDSIZE(%esp)
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#else /* LINUX32 */
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.ifnb \param4
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.ifnc \param4, %rcx
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mov \param4, %rcx
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.endif
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.endif
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.ifnb \param3
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.ifnc \param3, %rdx
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mov \param3, %rdx
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.endif
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.endif
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.ifnb \param2
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.ifnc \param2, %rsi
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mov \param2, %rsi
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.endif
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.endif
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.ifnc \param1, %rdi
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mov \param1, %rdi
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.endif
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#endif /* LINUX64 */
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.endm
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/*******************************************************************/
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.macro SE_PROLOG
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.cfi_startproc
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#ifdef LINUX32
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pushl %ebp
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movl %esp, %ebp
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#endif
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push %xbx
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push %xcx
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push %xdx
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#if defined LINUX64
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movq %rdi, %rbx
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movq %rsi, %rcx
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/* rdx remains the same, rdi/rsi is not used by _SE0
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*/
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#elif defined LINUX32
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movl 2*SE_WORDSIZE(%ebp), %ebx
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movl 3*SE_WORDSIZE(%ebp), %ecx
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movl 4*SE_WORDSIZE(%ebp), %edx
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#endif
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.endm
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/*******************************************************************/
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.macro SE_EPILOG
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pop %xdx
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pop %xcx
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pop %xbx
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#ifdef LINUX32
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movl %ebp, %esp
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popl %ebp
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#endif
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ret
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.cfi_endproc
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.endm
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/*******************************************************************/
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/* load the address of `symbol' to the register `reg' in PIC way. */
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.macro lea_pic symbol, reg
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#ifdef LINUX64
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lea \symbol(%rip), \reg
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#else
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/* The real code on x86 would look like this (get `bar' from `foo'):
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*
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* 00000198 <bar>:
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* 198: c3 ret
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*
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* 00000199 <foo>:
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* 199: e8 00 00 00 00 call 19e <foo+0x5>
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* 19e: 58 pop %eax
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* 19f: 8d 40 fa lea -0x6(%eax),%eax
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*/
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call . + 0x5 /* No label here to avoid interfering w/ calling code */
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pop \reg
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lea (\symbol - . + 1)(\reg), \reg
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#endif
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.endm
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#endif /* LINUX_REGS_H__ */
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