73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
/* xspan -- a minimally invasive checked memory smart pointer
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This file is part of the UPX executable compressor.
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Copyright (C) 1996-2023 Markus Franz Xaver Johannes Oberhumer
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All Rights Reserved.
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UPX and the UCL library are free software; you can redistribute them
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and/or modify them under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING.
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If not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Markus F.X.J. Oberhumer
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<markus@oberhumer.com>
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*/
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#include "../conf.h"
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#if WITH_SPAN
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SPAN_NAMESPACE_BEGIN
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upx_std_atomic(upx_uint64_t) span_check_stats_check_range_counter(0);
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// HINT: set env-var "UPX_DEBUG_DOCTEST_DISABLE=1" for improved debugging experience
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__acc_noinline void span_fail_nullptr() {
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throwCantUnpack("span unexpected NULL pointer; take care!");
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}
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__acc_noinline void span_fail_nullbase() {
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throwCantUnpack("span unexpected NULL base; take care!");
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}
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__acc_noinline void span_fail_not_same_base() {
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throwInternalError("span unexpected base pointer; take care!");
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}
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__acc_noinline void span_fail_range_nullptr() {
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throwCantUnpack("span_check_range: unexpected NULL pointer; take care!");
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}
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__acc_noinline void span_fail_range_nullbase() {
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throwCantUnpack("span_check_range: unexpected NULL base; take care!");
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}
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__acc_noinline void span_fail_range_range() {
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throwCantUnpack("span_check_range: pointer out of range; take care!");
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}
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void span_check_range(const void *p, const void *base, ptrdiff_t size_in_bytes) {
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if __acc_very_unlikely (p == nullptr)
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span_fail_range_nullptr();
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if __acc_very_unlikely (base == nullptr)
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span_fail_range_nullbase();
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ptrdiff_t off = (const char *) p - (const char *) base;
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if __acc_very_unlikely (off < 0 || off > size_in_bytes)
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span_fail_range_range();
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span_check_stats_check_range_counter += 1;
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// fprintf(stderr, "span_check_range done\n");
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}
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SPAN_NAMESPACE_END
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#endif // WITH_SPAN
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/* vim:set ts=4 sw=4 et: */
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