mirror of
https://github.com/intel/linux-sgx
synced 2026-06-08 14:49:32 +00:00
Li, Xun
effae62802
Along with the latest processor microcode and re-signed all the Intel(R) SGX Architecture Enclaves (AEs) to address CVE-2022-21123, CVE-2022-21125 and CVE-2022-21166. Upgraded to Protobuf 3.20. Upgraded to SgxSSL/OpenSSL 1.1.1o. Added Intel TDX Attestation support. Added Rust support for ECDSA quote verification. Fixed bugs. Signed-off-by: Li, Xun <xun.li@intel.com>
89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/* $OpenBSD: memset.c,v 1.7 2015/08/31 02:53:57 guenther Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#ifdef _TLIBC_USE_INTEL_FAST_STRING_
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extern void *_intel_fast_memset(void *, void *, size_t);
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#else
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extern void *__memset(void *dst, int c, size_t n);
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#endif
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extern void* __memcpy_verw(void *dst0, const void *src0);
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extern void* __memcpy_8a(void *dst0, const void *src0);
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void *
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memset_verw(void *dst, int c, size_t len)
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{
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char* dst0 = dst;
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if (len == 0 || dst == NULL)
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{
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return dst;
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}
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unsigned char tt = (unsigned char)c;
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uint64_t tmp = 0;
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memset((void*)&tmp, c, 8);
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while (len >= 8) {
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if((unsigned long long)dst0%8 == 0) {
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// 8-byte-aligned - don't need <VERW><MFENCE LFENCE> bracketing
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__memcpy_8a(dst0, (void*)&tmp);
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dst0 += 8;
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len -= 8;
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}
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else{
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// not 8-byte-aligned - need <VERW><MFENCE LFENCE> bracketing
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__memcpy_verw(dst0, (void *)&tt);
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dst0++;
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len--;
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}
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}
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// less than 8 bytes left - need <VERW> <MFENCE LFENCE> bracketing
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for (unsigned i = 0; i < len; i++) {
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__memcpy_verw(dst0, (void *)&tt);
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dst0++;
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}
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return dst;
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}
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void *
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memset(void *dst, int c, size_t n)
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{
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#ifdef _TLIBC_USE_INTEL_FAST_STRING_
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return _intel_fast_memset(dst, (void*)c, n);
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#else
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return __memset(dst, c, n);
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#endif /* !_TLIBC_USE_INTEL_FAST_STRING_ */
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}
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