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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>
96 lines
3.0 KiB
C
96 lines
3.0 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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#include "internal/global_init.h"
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#include "linux/elf_parser.h"
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#include "global_data.h"
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#include "internal/util.h"
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#include "thread_data.h"
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#include "sgx_trts.h"
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#include <assert.h>
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#include <stdlib.h>
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typedef void (*fp_t)(void);
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/* required by global constructor when -fuse-cxa-atexit is enabled */
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void *__dso_handle __attribute__((weak)) = &(__dso_handle);
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int __cxa_atexit(void (*fun)(void *), void *para, void *dso)
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{
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(void)(fun);
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(void)(para);
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(void)(dso);
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return 0;
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}
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/* auxiliary routines */
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static void do_ctors_aux(void)
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{
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/* SGX RTS does not support .ctors currently */
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fp_t *p = NULL;
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uintptr_t init_array_addr;
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size_t init_array_size;
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const void *enclave_start = (const void*)&__ImageBase;
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elf_get_init_array(enclave_start, &init_array_addr, &init_array_size);
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if (init_array_addr == 0 || init_array_size == 0)
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return;
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fp_t *fp_start = (fp_t*)(init_array_addr + (uintptr_t)(enclave_start));
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fp_t *fp_end = fp_start + (init_array_size / sizeof(fp_t));
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/* traverse .init_array in forward order */
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for (p = fp_start; p < fp_end; p++)
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{
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(*p)();
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}
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}
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void init_global_object(void)
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{
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do_ctors_aux();
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}
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void init_stack_guard(void)
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{
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thread_data_t *thread_data = get_thread_data();
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assert(thread_data != NULL);
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if (SGX_SUCCESS != sgx_read_rand(
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(unsigned char*)&thread_data->stack_guard,
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sizeof(thread_data->stack_guard)))
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abort();
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}
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