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/*
* Copyright (c) 2015-2017, Intel Corporation
* Copyright (c) 2021, Arm Limited
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/** \file
* \brief Large Bounded Repeat (LBR) engine for SVE: runtime code.
*/
static really_inline
char lbrRevScanVerm16(const struct NFA *nfa, const u8 *buf,
size_t begin, size_t end, size_t *loc) {
assert(begin <= end);
assert(nfa->type == LBR_NFA_VERM16);
const struct lbr_verm16 *l = getImplNfa(nfa);
if (begin == end) {
return 0;
}
const u8 *ptr = rvermicelli16Exec(l->mask, buf + begin, buf + end);
if (ptr == buf + begin - 1) {
DEBUG_PRINTF("no escape found\n");
return 0;
}
assert(loc);
*loc = ptr - buf;
DEBUG_PRINTF("escape found at offset %zu\n", *loc);
return 1;
}
static really_inline
char lbrRevScanNVerm16(const struct NFA *nfa, const u8 *buf,
size_t begin, size_t end, size_t *loc) {
assert(begin <= end);
assert(nfa->type == LBR_NFA_NVERM16);
const struct lbr_verm16 *l = getImplNfa(nfa);
if (begin == end) {
return 0;
}
const u8 *ptr = rnvermicelli16Exec(l->mask, buf + begin, buf + end);
if (ptr == buf + begin - 1) {
DEBUG_PRINTF("no escape found\n");
return 0;
}
assert(loc);
*loc = ptr - buf;
DEBUG_PRINTF("escape found at offset %zu\n", *loc);
return 1;
}
static really_inline
char lbrFwdScanVerm16(const struct NFA *nfa, const u8 *buf,
size_t begin, size_t end, size_t *loc) {
assert(begin <= end);
assert(nfa->type == LBR_NFA_VERM16);
const struct lbr_verm16 *l = getImplNfa(nfa);
if (begin == end) {
return 0;
}
const u8 *ptr = vermicelli16Exec(l->mask, buf + begin, buf + end);
if (ptr == buf + end) {
DEBUG_PRINTF("no escape found\n");
return 0;
}
assert(loc);
*loc = ptr - buf;
DEBUG_PRINTF("escape found at offset %zu\n", *loc);
return 1;
}
static really_inline
char lbrFwdScanNVerm16(const struct NFA *nfa, const u8 *buf,
size_t begin, size_t end, size_t *loc) {
assert(begin <= end);
assert(nfa->type == LBR_NFA_NVERM16);
const struct lbr_verm16 *l = getImplNfa(nfa);
if (begin == end) {
return 0;
}
const u8 *ptr = nvermicelli16Exec(l->mask, buf + begin, buf + end);
if (ptr == buf + end) {
DEBUG_PRINTF("no escape found\n");
return 0;
}
assert(loc);
*loc = ptr - buf;
DEBUG_PRINTF("escape found at offset %zu\n", *loc);
return 1;
}
#define ENGINE_ROOT_NAME Verm16
#include "lbr_common_impl.h"
#define ENGINE_ROOT_NAME NVerm16
#include "lbr_common_impl.h"