From 739fcd1b8c65a05112af02d0780c8930e3e8c42c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?R=C3=A9mi=20Verschelde?= Date: Thu, 14 Mar 2024 23:44:49 +0100 Subject: [PATCH] pcre2: Remove unused sjlit files after last update Follow-up to #89371. --- modules/regex/SCsub | 3 +- thirdparty/README.md | 3 - .../patches/sljit-macos11-conditional.patch | 31 -- .../pcre2/src/sljit/sljitExecAllocator.c | 414 --------------- .../pcre2/src/sljit/sljitProtExecAllocator.c | 474 ------------------ .../pcre2/src/sljit/sljitWXExecAllocator.c | 204 -------- 6 files changed, 2 insertions(+), 1127 deletions(-) delete mode 100644 thirdparty/pcre2/patches/sljit-macos11-conditional.patch delete mode 100644 thirdparty/pcre2/src/sljit/sljitExecAllocator.c delete mode 100644 thirdparty/pcre2/src/sljit/sljitProtExecAllocator.c delete mode 100644 thirdparty/pcre2/src/sljit/sljitWXExecAllocator.c diff --git a/modules/regex/SCsub b/modules/regex/SCsub index 3e31e3c2d97..f5e2dd5dfcb 100644 --- a/modules/regex/SCsub +++ b/modules/regex/SCsub @@ -29,7 +29,7 @@ if env["builtin_pcre2"]: "pcre2_extuni.c", "pcre2_find_bracket.c", "pcre2_jit_compile.c", - # "pcre2_jit_match.c", "pcre2_jit_misc.c", # these files are included in pcre2_jit_compile.c. + # "pcre2_jit_match.c", "pcre2_jit_misc.c", # Included in `pcre2_jit_compile.c`. "pcre2_maketables.c", "pcre2_match.c", "pcre2_match_data.c", @@ -44,6 +44,7 @@ if env["builtin_pcre2"]: "pcre2_substring.c", "pcre2_tables.c", "pcre2_ucd.c", + # "pcre2_ucptables.c", # Included in `pcre2_tables.c`. "pcre2_valid_utf.c", "pcre2_xclass.c", ] diff --git a/thirdparty/README.md b/thirdparty/README.md index 2c9bc36545a..d86c14cd14a 100644 --- a/thirdparty/README.md +++ b/thirdparty/README.md @@ -769,9 +769,6 @@ Files extracted from upstream source: - `src/sljit/` - `AUTHORS` and `LICENCE` -A sljit patch from upstream was backported to fix macOS < 11.0 compilation -in 10.40, it can be found in the `patches` folder. - ## recastnavigation diff --git a/thirdparty/pcre2/patches/sljit-macos11-conditional.patch b/thirdparty/pcre2/patches/sljit-macos11-conditional.patch deleted file mode 100644 index b92c8f9e092..00000000000 --- a/thirdparty/pcre2/patches/sljit-macos11-conditional.patch +++ /dev/null @@ -1,31 +0,0 @@ -From de8fc816bc6698ab97316ed954e133e7e5098262 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Carlo=20Marcelo=20Arenas=20Bel=C3=B3n?= -Date: Thu, 21 Apr 2022 21:01:12 -0700 -Subject: [PATCH] macos: somehow allow building with a target below 11.0 - -While building for macOS older than 11 in Apple Silicon makes no -sense, some build systems lack the flexibility to set a target per -architecture while aiming to support multi architecture binaries. - -Allow an option in those cases by using the slower runtime checks -if the toolchain allows it. - -Fixes: PCRE2Project/pcre2#109 ---- - thirdparty/pcre2/src/sljit/sljitExecAllocator.c | 3 +++ - 1 file changed, 3 insertions(+) - -diff --git a/thirdparty/pcre2/src/sljit/sljitExecAllocator.c b/thirdparty/pcre2/src/sljit/sljitExecAllocator.c -index 92d940ddc2..6359848cd5 100644 ---- a/thirdparty/pcre2/src/sljit/sljitExecAllocator.c -+++ b/thirdparty/pcre2/src/sljit/sljitExecAllocator.c -@@ -152,6 +152,9 @@ static SLJIT_INLINE void apple_update_wx_flags(sljit_s32 enable_exec) - { - #if MAC_OS_X_VERSION_MIN_REQUIRED >= 110000 - pthread_jit_write_protect_np(enable_exec); -+#elif defined(__clang__) -+ if (__builtin_available(macOS 11.0, *)) -+ pthread_jit_write_protect_np(enable_exec); - #else - #error "Must target Big Sur or newer" - #endif /* BigSur */ diff --git a/thirdparty/pcre2/src/sljit/sljitExecAllocator.c b/thirdparty/pcre2/src/sljit/sljitExecAllocator.c deleted file mode 100644 index 6359848cd5e..00000000000 --- a/thirdparty/pcre2/src/sljit/sljitExecAllocator.c +++ /dev/null @@ -1,414 +0,0 @@ -/* - * Stack-less Just-In-Time compiler - * - * Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, are - * permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, this list of - * conditions and the following disclaimer. - * - * 2. 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. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) 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 HOLDER(S) 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. - */ - -/* - This file contains a simple executable memory allocator - - It is assumed, that executable code blocks are usually medium (or sometimes - large) memory blocks, and the allocator is not too frequently called (less - optimized than other allocators). Thus, using it as a generic allocator is - not suggested. - - How does it work: - Memory is allocated in continuous memory areas called chunks by alloc_chunk() - Chunk format: - [ block ][ block ] ... [ block ][ block terminator ] - - All blocks and the block terminator is started with block_header. The block - header contains the size of the previous and the next block. These sizes - can also contain special values. - Block size: - 0 - The block is a free_block, with a different size member. - 1 - The block is a block terminator. - n - The block is used at the moment, and the value contains its size. - Previous block size: - 0 - This is the first block of the memory chunk. - n - The size of the previous block. - - Using these size values we can go forward or backward on the block chain. - The unused blocks are stored in a chain list pointed by free_blocks. This - list is useful if we need to find a suitable memory area when the allocator - is called. - - When a block is freed, the new free block is connected to its adjacent free - blocks if possible. - - [ free block ][ used block ][ free block ] - and "used block" is freed, the three blocks are connected together: - [ one big free block ] -*/ - -/* --------------------------------------------------------------------- */ -/* System (OS) functions */ -/* --------------------------------------------------------------------- */ - -/* 64 KByte. */ -#define CHUNK_SIZE (sljit_uw)0x10000u - -/* - alloc_chunk / free_chunk : - * allocate executable system memory chunks - * the size is always divisible by CHUNK_SIZE - SLJIT_ALLOCATOR_LOCK / SLJIT_ALLOCATOR_UNLOCK : - * provided as part of sljitUtils - * only the allocator requires this lock, sljit is fully thread safe - as it only uses local variables -*/ - -#ifdef _WIN32 -#define SLJIT_UPDATE_WX_FLAGS(from, to, enable_exec) - -static SLJIT_INLINE void* alloc_chunk(sljit_uw size) -{ - return VirtualAlloc(NULL, size, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE); -} - -static SLJIT_INLINE void free_chunk(void *chunk, sljit_uw size) -{ - SLJIT_UNUSED_ARG(size); - VirtualFree(chunk, 0, MEM_RELEASE); -} - -#else /* POSIX */ - -#if defined(__APPLE__) && defined(MAP_JIT) -/* - On macOS systems, returns MAP_JIT if it is defined _and_ we're running on a - version where it's OK to have more than one JIT block or where MAP_JIT is - required. - On non-macOS systems, returns MAP_JIT if it is defined. -*/ -#include -#if TARGET_OS_OSX -#if defined SLJIT_CONFIG_X86 && SLJIT_CONFIG_X86 -#ifdef MAP_ANON -#include -#include - -#define SLJIT_MAP_JIT (get_map_jit_flag()) - -static SLJIT_INLINE int get_map_jit_flag() -{ - size_t page_size; - void *ptr; - struct utsname name; - static int map_jit_flag = -1; - - if (map_jit_flag < 0) { - map_jit_flag = 0; - uname(&name); - - /* Kernel version for 10.14.0 (Mojave) or later */ - if (atoi(name.release) >= 18) { - page_size = get_page_alignment() + 1; - /* Only use MAP_JIT if a hardened runtime is used */ - ptr = mmap(NULL, page_size, PROT_WRITE | PROT_EXEC, - MAP_PRIVATE | MAP_ANON, -1, 0); - - if (ptr != MAP_FAILED) - munmap(ptr, page_size); - else - map_jit_flag = MAP_JIT; - } - } - return map_jit_flag; -} -#endif /* MAP_ANON */ -#else /* !SLJIT_CONFIG_X86 */ -#if !(defined SLJIT_CONFIG_ARM && SLJIT_CONFIG_ARM) -#error "Unsupported architecture" -#endif /* SLJIT_CONFIG_ARM */ -#include -#include - -#define SLJIT_MAP_JIT (MAP_JIT) -#define SLJIT_UPDATE_WX_FLAGS(from, to, enable_exec) \ - apple_update_wx_flags(enable_exec) - -static SLJIT_INLINE void apple_update_wx_flags(sljit_s32 enable_exec) -{ -#if MAC_OS_X_VERSION_MIN_REQUIRED >= 110000 - pthread_jit_write_protect_np(enable_exec); -#elif defined(__clang__) - if (__builtin_available(macOS 11.0, *)) - pthread_jit_write_protect_np(enable_exec); -#else -#error "Must target Big Sur or newer" -#endif /* BigSur */ -} -#endif /* SLJIT_CONFIG_X86 */ -#else /* !TARGET_OS_OSX */ -#define SLJIT_MAP_JIT (MAP_JIT) -#endif /* TARGET_OS_OSX */ -#endif /* __APPLE__ && MAP_JIT */ -#ifndef SLJIT_UPDATE_WX_FLAGS -#define SLJIT_UPDATE_WX_FLAGS(from, to, enable_exec) -#endif /* !SLJIT_UPDATE_WX_FLAGS */ -#ifndef SLJIT_MAP_JIT -#define SLJIT_MAP_JIT (0) -#endif /* !SLJIT_MAP_JIT */ - -static SLJIT_INLINE void* alloc_chunk(sljit_uw size) -{ - void *retval; - int prot = PROT_READ | PROT_WRITE | PROT_EXEC; - int flags = MAP_PRIVATE; - int fd = -1; - -#ifdef PROT_MAX - prot |= PROT_MAX(prot); -#endif - -#ifdef MAP_ANON - flags |= MAP_ANON | SLJIT_MAP_JIT; -#else /* !MAP_ANON */ - if (SLJIT_UNLIKELY((dev_zero < 0) && open_dev_zero())) - return NULL; - - fd = dev_zero; -#endif /* MAP_ANON */ - - retval = mmap(NULL, size, prot, flags, fd, 0); - if (retval == MAP_FAILED) - return NULL; - -#ifdef __FreeBSD__ - /* HardenedBSD's mmap lies, so check permissions again */ - if (mprotect(retval, size, PROT_READ | PROT_WRITE | PROT_EXEC) < 0) { - munmap(retval, size); - return NULL; - } -#endif /* FreeBSD */ - - SLJIT_UPDATE_WX_FLAGS(retval, (uint8_t *)retval + size, 0); - - return retval; -} - -static SLJIT_INLINE void free_chunk(void *chunk, sljit_uw size) -{ - munmap(chunk, size); -} - -#endif /* windows */ - -/* --------------------------------------------------------------------- */ -/* Common functions */ -/* --------------------------------------------------------------------- */ - -#define CHUNK_MASK (~(CHUNK_SIZE - 1)) - -struct block_header { - sljit_uw size; - sljit_uw prev_size; -}; - -struct free_block { - struct block_header header; - struct free_block *next; - struct free_block *prev; - sljit_uw size; -}; - -#define AS_BLOCK_HEADER(base, offset) \ - ((struct block_header*)(((sljit_u8*)base) + offset)) -#define AS_FREE_BLOCK(base, offset) \ - ((struct free_block*)(((sljit_u8*)base) + offset)) -#define MEM_START(base) ((void*)(((sljit_u8*)base) + sizeof(struct block_header))) -#define ALIGN_SIZE(size) (((size) + sizeof(struct block_header) + 7u) & ~(sljit_uw)7) - -static struct free_block* free_blocks; -static sljit_uw allocated_size; -static sljit_uw total_size; - -static SLJIT_INLINE void sljit_insert_free_block(struct free_block *free_block, sljit_uw size) -{ - free_block->header.size = 0; - free_block->size = size; - - free_block->next = free_blocks; - free_block->prev = NULL; - if (free_blocks) - free_blocks->prev = free_block; - free_blocks = free_block; -} - -static SLJIT_INLINE void sljit_remove_free_block(struct free_block *free_block) -{ - if (free_block->next) - free_block->next->prev = free_block->prev; - - if (free_block->prev) - free_block->prev->next = free_block->next; - else { - SLJIT_ASSERT(free_blocks == free_block); - free_blocks = free_block->next; - } -} - -SLJIT_API_FUNC_ATTRIBUTE void* sljit_malloc_exec(sljit_uw size) -{ - struct block_header *header; - struct block_header *next_header; - struct free_block *free_block; - sljit_uw chunk_size; - - SLJIT_ALLOCATOR_LOCK(); - if (size < (64 - sizeof(struct block_header))) - size = (64 - sizeof(struct block_header)); - size = ALIGN_SIZE(size); - - free_block = free_blocks; - while (free_block) { - if (free_block->size >= size) { - chunk_size = free_block->size; - SLJIT_UPDATE_WX_FLAGS(NULL, NULL, 0); - if (chunk_size > size + 64) { - /* We just cut a block from the end of the free block. */ - chunk_size -= size; - free_block->size = chunk_size; - header = AS_BLOCK_HEADER(free_block, chunk_size); - header->prev_size = chunk_size; - AS_BLOCK_HEADER(header, size)->prev_size = size; - } - else { - sljit_remove_free_block(free_block); - header = (struct block_header*)free_block; - size = chunk_size; - } - allocated_size += size; - header->size = size; - SLJIT_ALLOCATOR_UNLOCK(); - return MEM_START(header); - } - free_block = free_block->next; - } - - chunk_size = (size + sizeof(struct block_header) + CHUNK_SIZE - 1) & CHUNK_MASK; - header = (struct block_header*)alloc_chunk(chunk_size); - if (!header) { - SLJIT_ALLOCATOR_UNLOCK(); - return NULL; - } - - chunk_size -= sizeof(struct block_header); - total_size += chunk_size; - - header->prev_size = 0; - if (chunk_size > size + 64) { - /* Cut the allocated space into a free and a used block. */ - allocated_size += size; - header->size = size; - chunk_size -= size; - - free_block = AS_FREE_BLOCK(header, size); - free_block->header.prev_size = size; - sljit_insert_free_block(free_block, chunk_size); - next_header = AS_BLOCK_HEADER(free_block, chunk_size); - } - else { - /* All space belongs to this allocation. */ - allocated_size += chunk_size; - header->size = chunk_size; - next_header = AS_BLOCK_HEADER(header, chunk_size); - } - next_header->size = 1; - next_header->prev_size = chunk_size; - SLJIT_ALLOCATOR_UNLOCK(); - return MEM_START(header); -} - -SLJIT_API_FUNC_ATTRIBUTE void sljit_free_exec(void* ptr) -{ - struct block_header *header; - struct free_block* free_block; - - SLJIT_ALLOCATOR_LOCK(); - header = AS_BLOCK_HEADER(ptr, -(sljit_sw)sizeof(struct block_header)); - allocated_size -= header->size; - - /* Connecting free blocks together if possible. */ - SLJIT_UPDATE_WX_FLAGS(NULL, NULL, 0); - - /* If header->prev_size == 0, free_block will equal to header. - In this case, free_block->header.size will be > 0. */ - free_block = AS_FREE_BLOCK(header, -(sljit_sw)header->prev_size); - if (SLJIT_UNLIKELY(!free_block->header.size)) { - free_block->size += header->size; - header = AS_BLOCK_HEADER(free_block, free_block->size); - header->prev_size = free_block->size; - } - else { - free_block = (struct free_block*)header; - sljit_insert_free_block(free_block, header->size); - } - - header = AS_BLOCK_HEADER(free_block, free_block->size); - if (SLJIT_UNLIKELY(!header->size)) { - free_block->size += ((struct free_block*)header)->size; - sljit_remove_free_block((struct free_block*)header); - header = AS_BLOCK_HEADER(free_block, free_block->size); - header->prev_size = free_block->size; - } - - /* The whole chunk is free. */ - if (SLJIT_UNLIKELY(!free_block->header.prev_size && header->size == 1)) { - /* If this block is freed, we still have (allocated_size / 2) free space. */ - if (total_size - free_block->size > (allocated_size * 3 / 2)) { - total_size -= free_block->size; - sljit_remove_free_block(free_block); - free_chunk(free_block, free_block->size + sizeof(struct block_header)); - } - } - - SLJIT_UPDATE_WX_FLAGS(NULL, NULL, 1); - SLJIT_ALLOCATOR_UNLOCK(); -} - -SLJIT_API_FUNC_ATTRIBUTE void sljit_free_unused_memory_exec(void) -{ - struct free_block* free_block; - struct free_block* next_free_block; - - SLJIT_ALLOCATOR_LOCK(); - SLJIT_UPDATE_WX_FLAGS(NULL, NULL, 0); - - free_block = free_blocks; - while (free_block) { - next_free_block = free_block->next; - if (!free_block->header.prev_size && - AS_BLOCK_HEADER(free_block, free_block->size)->size == 1) { - total_size -= free_block->size; - sljit_remove_free_block(free_block); - free_chunk(free_block, free_block->size + sizeof(struct block_header)); - } - free_block = next_free_block; - } - - SLJIT_ASSERT((total_size && free_blocks) || (!total_size && !free_blocks)); - SLJIT_UPDATE_WX_FLAGS(NULL, NULL, 1); - SLJIT_ALLOCATOR_UNLOCK(); -} diff --git a/thirdparty/pcre2/src/sljit/sljitProtExecAllocator.c b/thirdparty/pcre2/src/sljit/sljitProtExecAllocator.c deleted file mode 100644 index 915411fbed6..00000000000 --- a/thirdparty/pcre2/src/sljit/sljitProtExecAllocator.c +++ /dev/null @@ -1,474 +0,0 @@ -/* - * Stack-less Just-In-Time compiler - * - * Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, are - * permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, this list of - * conditions and the following disclaimer. - * - * 2. 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. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) 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 HOLDER(S) 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. - */ - -/* - This file contains a simple executable memory allocator - - It is assumed, that executable code blocks are usually medium (or sometimes - large) memory blocks, and the allocator is not too frequently called (less - optimized than other allocators). Thus, using it as a generic allocator is - not suggested. - - How does it work: - Memory is allocated in continuous memory areas called chunks by alloc_chunk() - Chunk format: - [ block ][ block ] ... [ block ][ block terminator ] - - All blocks and the block terminator is started with block_header. The block - header contains the size of the previous and the next block. These sizes - can also contain special values. - Block size: - 0 - The block is a free_block, with a different size member. - 1 - The block is a block terminator. - n - The block is used at the moment, and the value contains its size. - Previous block size: - 0 - This is the first block of the memory chunk. - n - The size of the previous block. - - Using these size values we can go forward or backward on the block chain. - The unused blocks are stored in a chain list pointed by free_blocks. This - list is useful if we need to find a suitable memory area when the allocator - is called. - - When a block is freed, the new free block is connected to its adjacent free - blocks if possible. - - [ free block ][ used block ][ free block ] - and "used block" is freed, the three blocks are connected together: - [ one big free block ] -*/ - -/* --------------------------------------------------------------------- */ -/* System (OS) functions */ -/* --------------------------------------------------------------------- */ - -/* 64 KByte. */ -#define CHUNK_SIZE (sljit_uw)0x10000 - -struct chunk_header { - void *executable; -}; - -/* - alloc_chunk / free_chunk : - * allocate executable system memory chunks - * the size is always divisible by CHUNK_SIZE - SLJIT_ALLOCATOR_LOCK / SLJIT_ALLOCATOR_UNLOCK : - * provided as part of sljitUtils - * only the allocator requires this lock, sljit is fully thread safe - as it only uses local variables -*/ - -#ifndef __NetBSD__ -#include -#include -#include -#include - -#ifndef O_NOATIME -#define O_NOATIME 0 -#endif - -/* this is a linux extension available since kernel 3.11 */ -#ifndef O_TMPFILE -#define O_TMPFILE 020200000 -#endif - -#ifndef _GNU_SOURCE -char *secure_getenv(const char *name); -int mkostemp(char *template, int flags); -#endif - -static SLJIT_INLINE int create_tempfile(void) -{ - int fd; - char tmp_name[256]; - size_t tmp_name_len = 0; - char *dir; - struct stat st; -#if defined(SLJIT_SINGLE_THREADED) && SLJIT_SINGLE_THREADED - mode_t mode; -#endif - -#ifdef HAVE_MEMFD_CREATE - /* this is a GNU extension, make sure to use -D_GNU_SOURCE */ - fd = memfd_create("sljit", MFD_CLOEXEC); - if (fd != -1) { - fchmod(fd, 0); - return fd; - } -#endif - - dir = secure_getenv("TMPDIR"); - - if (dir) { - tmp_name_len = strlen(dir); - if (tmp_name_len > 0 && tmp_name_len < sizeof(tmp_name)) { - if ((stat(dir, &st) == 0) && S_ISDIR(st.st_mode)) - strcpy(tmp_name, dir); - } - } - -#ifdef P_tmpdir - if (!tmp_name_len) { - tmp_name_len = strlen(P_tmpdir); - if (tmp_name_len > 0 && tmp_name_len < sizeof(tmp_name)) - strcpy(tmp_name, P_tmpdir); - } -#endif - if (!tmp_name_len) { - strcpy(tmp_name, "/tmp"); - tmp_name_len = 4; - } - - SLJIT_ASSERT(tmp_name_len > 0 && tmp_name_len < sizeof(tmp_name)); - - if (tmp_name[tmp_name_len - 1] == '/') - tmp_name[--tmp_name_len] = '\0'; - -#ifdef __linux__ - /* - * the previous trimming might had left an empty string if TMPDIR="/" - * so work around the problem below - */ - fd = open(tmp_name_len ? tmp_name : "/", - O_TMPFILE | O_EXCL | O_RDWR | O_NOATIME | O_CLOEXEC, 0); - if (fd != -1) - return fd; -#endif - - if (tmp_name_len + 7 >= sizeof(tmp_name)) - return -1; - - strcpy(tmp_name + tmp_name_len, "/XXXXXX"); -#if defined(SLJIT_SINGLE_THREADED) && SLJIT_SINGLE_THREADED - mode = umask(0777); -#endif - fd = mkostemp(tmp_name, O_CLOEXEC | O_NOATIME); -#if defined(SLJIT_SINGLE_THREADED) && SLJIT_SINGLE_THREADED - umask(mode); -#else - fchmod(fd, 0); -#endif - - if (fd == -1) - return -1; - - if (unlink(tmp_name)) { - close(fd); - return -1; - } - - return fd; -} - -static SLJIT_INLINE struct chunk_header* alloc_chunk(sljit_uw size) -{ - struct chunk_header *retval; - int fd; - - fd = create_tempfile(); - if (fd == -1) - return NULL; - - if (ftruncate(fd, (off_t)size)) { - close(fd); - return NULL; - } - - retval = (struct chunk_header *)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); - - if (retval == MAP_FAILED) { - close(fd); - return NULL; - } - - retval->executable = mmap(NULL, size, PROT_READ | PROT_EXEC, MAP_SHARED, fd, 0); - - if (retval->executable == MAP_FAILED) { - munmap((void *)retval, size); - close(fd); - return NULL; - } - - close(fd); - return retval; -} -#else -/* - * MAP_REMAPDUP is a NetBSD extension available sinde 8.0, make sure to - * adjust your feature macros (ex: -D_NETBSD_SOURCE) as needed - */ -static SLJIT_INLINE struct chunk_header* alloc_chunk(sljit_uw size) -{ - struct chunk_header *retval; - - retval = (struct chunk_header *)mmap(NULL, size, - PROT_READ | PROT_WRITE | PROT_MPROTECT(PROT_EXEC), - MAP_ANON | MAP_SHARED, -1, 0); - - if (retval == MAP_FAILED) - return NULL; - - retval->executable = mremap(retval, size, NULL, size, MAP_REMAPDUP); - if (retval->executable == MAP_FAILED) { - munmap((void *)retval, size); - return NULL; - } - - if (mprotect(retval->executable, size, PROT_READ | PROT_EXEC) == -1) { - munmap(retval->executable, size); - munmap((void *)retval, size); - return NULL; - } - - return retval; -} -#endif /* NetBSD */ - -static SLJIT_INLINE void free_chunk(void *chunk, sljit_uw size) -{ - struct chunk_header *header = ((struct chunk_header *)chunk) - 1; - - munmap(header->executable, size); - munmap((void *)header, size); -} - -/* --------------------------------------------------------------------- */ -/* Common functions */ -/* --------------------------------------------------------------------- */ - -#define CHUNK_MASK (~(CHUNK_SIZE - 1)) - -struct block_header { - sljit_uw size; - sljit_uw prev_size; - sljit_sw executable_offset; -}; - -struct free_block { - struct block_header header; - struct free_block *next; - struct free_block *prev; - sljit_uw size; -}; - -#define AS_BLOCK_HEADER(base, offset) \ - ((struct block_header*)(((sljit_u8*)base) + offset)) -#define AS_FREE_BLOCK(base, offset) \ - ((struct free_block*)(((sljit_u8*)base) + offset)) -#define MEM_START(base) ((void*)((base) + 1)) -#define ALIGN_SIZE(size) (((size) + sizeof(struct block_header) + 7u) & ~(sljit_uw)7) - -static struct free_block* free_blocks; -static sljit_uw allocated_size; -static sljit_uw total_size; - -static SLJIT_INLINE void sljit_insert_free_block(struct free_block *free_block, sljit_uw size) -{ - free_block->header.size = 0; - free_block->size = size; - - free_block->next = free_blocks; - free_block->prev = NULL; - if (free_blocks) - free_blocks->prev = free_block; - free_blocks = free_block; -} - -static SLJIT_INLINE void sljit_remove_free_block(struct free_block *free_block) -{ - if (free_block->next) - free_block->next->prev = free_block->prev; - - if (free_block->prev) - free_block->prev->next = free_block->next; - else { - SLJIT_ASSERT(free_blocks == free_block); - free_blocks = free_block->next; - } -} - -SLJIT_API_FUNC_ATTRIBUTE void* sljit_malloc_exec(sljit_uw size) -{ - struct chunk_header *chunk_header; - struct block_header *header; - struct block_header *next_header; - struct free_block *free_block; - sljit_uw chunk_size; - sljit_sw executable_offset; - - SLJIT_ALLOCATOR_LOCK(); - if (size < (64 - sizeof(struct block_header))) - size = (64 - sizeof(struct block_header)); - size = ALIGN_SIZE(size); - - free_block = free_blocks; - while (free_block) { - if (free_block->size >= size) { - chunk_size = free_block->size; - if (chunk_size > size + 64) { - /* We just cut a block from the end of the free block. */ - chunk_size -= size; - free_block->size = chunk_size; - header = AS_BLOCK_HEADER(free_block, chunk_size); - header->prev_size = chunk_size; - header->executable_offset = free_block->header.executable_offset; - AS_BLOCK_HEADER(header, size)->prev_size = size; - } - else { - sljit_remove_free_block(free_block); - header = (struct block_header*)free_block; - size = chunk_size; - } - allocated_size += size; - header->size = size; - SLJIT_ALLOCATOR_UNLOCK(); - return MEM_START(header); - } - free_block = free_block->next; - } - - chunk_size = sizeof(struct chunk_header) + sizeof(struct block_header); - chunk_size = (chunk_size + size + CHUNK_SIZE - 1) & CHUNK_MASK; - - chunk_header = alloc_chunk(chunk_size); - if (!chunk_header) { - SLJIT_ALLOCATOR_UNLOCK(); - return NULL; - } - - executable_offset = (sljit_sw)((sljit_u8*)chunk_header->executable - (sljit_u8*)chunk_header); - - chunk_size -= sizeof(struct chunk_header) + sizeof(struct block_header); - total_size += chunk_size; - - header = (struct block_header *)(chunk_header + 1); - - header->prev_size = 0; - header->executable_offset = executable_offset; - if (chunk_size > size + 64) { - /* Cut the allocated space into a free and a used block. */ - allocated_size += size; - header->size = size; - chunk_size -= size; - - free_block = AS_FREE_BLOCK(header, size); - free_block->header.prev_size = size; - free_block->header.executable_offset = executable_offset; - sljit_insert_free_block(free_block, chunk_size); - next_header = AS_BLOCK_HEADER(free_block, chunk_size); - } - else { - /* All space belongs to this allocation. */ - allocated_size += chunk_size; - header->size = chunk_size; - next_header = AS_BLOCK_HEADER(header, chunk_size); - } - next_header->size = 1; - next_header->prev_size = chunk_size; - next_header->executable_offset = executable_offset; - SLJIT_ALLOCATOR_UNLOCK(); - return MEM_START(header); -} - -SLJIT_API_FUNC_ATTRIBUTE void sljit_free_exec(void* ptr) -{ - struct block_header *header; - struct free_block* free_block; - - SLJIT_ALLOCATOR_LOCK(); - header = AS_BLOCK_HEADER(ptr, -(sljit_sw)sizeof(struct block_header)); - header = AS_BLOCK_HEADER(header, -header->executable_offset); - allocated_size -= header->size; - - /* Connecting free blocks together if possible. */ - - /* If header->prev_size == 0, free_block will equal to header. - In this case, free_block->header.size will be > 0. */ - free_block = AS_FREE_BLOCK(header, -(sljit_sw)header->prev_size); - if (SLJIT_UNLIKELY(!free_block->header.size)) { - free_block->size += header->size; - header = AS_BLOCK_HEADER(free_block, free_block->size); - header->prev_size = free_block->size; - } - else { - free_block = (struct free_block*)header; - sljit_insert_free_block(free_block, header->size); - } - - header = AS_BLOCK_HEADER(free_block, free_block->size); - if (SLJIT_UNLIKELY(!header->size)) { - free_block->size += ((struct free_block*)header)->size; - sljit_remove_free_block((struct free_block*)header); - header = AS_BLOCK_HEADER(free_block, free_block->size); - header->prev_size = free_block->size; - } - - /* The whole chunk is free. */ - if (SLJIT_UNLIKELY(!free_block->header.prev_size && header->size == 1)) { - /* If this block is freed, we still have (allocated_size / 2) free space. */ - if (total_size - free_block->size > (allocated_size * 3 / 2)) { - total_size -= free_block->size; - sljit_remove_free_block(free_block); - free_chunk(free_block, free_block->size + - sizeof(struct chunk_header) + - sizeof(struct block_header)); - } - } - - SLJIT_ALLOCATOR_UNLOCK(); -} - -SLJIT_API_FUNC_ATTRIBUTE void sljit_free_unused_memory_exec(void) -{ - struct free_block* free_block; - struct free_block* next_free_block; - - SLJIT_ALLOCATOR_LOCK(); - - free_block = free_blocks; - while (free_block) { - next_free_block = free_block->next; - if (!free_block->header.prev_size && - AS_BLOCK_HEADER(free_block, free_block->size)->size == 1) { - total_size -= free_block->size; - sljit_remove_free_block(free_block); - free_chunk(free_block, free_block->size + - sizeof(struct chunk_header) + - sizeof(struct block_header)); - } - free_block = next_free_block; - } - - SLJIT_ASSERT((total_size && free_blocks) || (!total_size && !free_blocks)); - SLJIT_ALLOCATOR_UNLOCK(); -} - -SLJIT_API_FUNC_ATTRIBUTE sljit_sw sljit_exec_offset(void* ptr) -{ - return ((struct block_header *)(ptr))[-1].executable_offset; -} diff --git a/thirdparty/pcre2/src/sljit/sljitWXExecAllocator.c b/thirdparty/pcre2/src/sljit/sljitWXExecAllocator.c deleted file mode 100644 index 68938131559..00000000000 --- a/thirdparty/pcre2/src/sljit/sljitWXExecAllocator.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * Stack-less Just-In-Time compiler - * - * Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, are - * permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, this list of - * conditions and the following disclaimer. - * - * 2. 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. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) 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 HOLDER(S) 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. - */ - -/* - This file contains a simple W^X executable memory allocator for POSIX - like systems and Windows - - In *NIX, MAP_ANON is required (that is considered a feature) so make - sure to set the right availability macros for your system or the code - will fail to build. - - If your system doesn't support mapping of anonymous pages (ex: IRIX) it - is also likely that it doesn't need this allocator and should be using - the standard one instead. - - It allocates a separate map for each code block and may waste a lot of - memory, because whatever was requested, will be rounded up to the page - size (minimum 4KB, but could be even bigger). - - It changes the page permissions (RW <-> RX) as needed and therefore, if you - will be updating the code after it has been generated, need to make sure to - block any concurrent execution, or could result in a SIGBUS, that could - even manifest itself at a different address than the one that was being - modified. - - Only use if you are unable to use the regular allocator because of security - restrictions and adding exceptions to your application or the system are - not possible. -*/ - -#define SLJIT_UPDATE_WX_FLAGS(from, to, enable_exec) \ - sljit_update_wx_flags((from), (to), (enable_exec)) - -#ifndef _WIN32 -#include -#include - -#ifdef __NetBSD__ -#define SLJIT_PROT_WX PROT_MPROTECT(PROT_EXEC) -#define check_se_protected(ptr, size) (0) -#else /* POSIX */ -#if !(defined SLJIT_SINGLE_THREADED && SLJIT_SINGLE_THREADED) -#include -#define SLJIT_SE_LOCK() pthread_mutex_lock(&se_lock) -#define SLJIT_SE_UNLOCK() pthread_mutex_unlock(&se_lock) -#endif /* !SLJIT_SINGLE_THREADED */ - -#define check_se_protected(ptr, size) generic_se_protected(ptr, size) - -static SLJIT_INLINE int generic_se_protected(void *ptr, sljit_uw size) -{ - if (SLJIT_LIKELY(!mprotect(ptr, size, PROT_EXEC))) - return mprotect(ptr, size, PROT_READ | PROT_WRITE); - - return -1; -} -#endif /* NetBSD */ - -#ifndef SLJIT_SE_LOCK -#define SLJIT_SE_LOCK() -#endif -#ifndef SLJIT_SE_UNLOCK -#define SLJIT_SE_UNLOCK() -#endif -#ifndef SLJIT_PROT_WX -#define SLJIT_PROT_WX 0 -#endif - -SLJIT_API_FUNC_ATTRIBUTE void* sljit_malloc_exec(sljit_uw size) -{ -#if !(defined SLJIT_SINGLE_THREADED && SLJIT_SINGLE_THREADED) \ - && !defined(__NetBSD__) - static pthread_mutex_t se_lock = PTHREAD_MUTEX_INITIALIZER; -#endif - static int se_protected = !SLJIT_PROT_WX; - int prot = PROT_READ | PROT_WRITE | SLJIT_PROT_WX; - sljit_uw* ptr; - - if (SLJIT_UNLIKELY(se_protected < 0)) - return NULL; - -#ifdef PROT_MAX - prot |= PROT_MAX(PROT_READ | PROT_WRITE | PROT_EXEC); -#endif - - size += sizeof(sljit_uw); - ptr = (sljit_uw*)mmap(NULL, size, prot, MAP_PRIVATE | MAP_ANON, -1, 0); - - if (ptr == MAP_FAILED) - return NULL; - - if (SLJIT_UNLIKELY(se_protected > 0)) { - SLJIT_SE_LOCK(); - se_protected = check_se_protected(ptr, size); - SLJIT_SE_UNLOCK(); - if (SLJIT_UNLIKELY(se_protected < 0)) { - munmap((void *)ptr, size); - return NULL; - } - } - - *ptr++ = size; - return ptr; -} - -#undef SLJIT_PROT_WX -#undef SLJIT_SE_UNLOCK -#undef SLJIT_SE_LOCK - -SLJIT_API_FUNC_ATTRIBUTE void sljit_free_exec(void* ptr) -{ - sljit_uw *start_ptr = ((sljit_uw*)ptr) - 1; - munmap((void*)start_ptr, *start_ptr); -} - -static void sljit_update_wx_flags(void *from, void *to, sljit_s32 enable_exec) -{ - sljit_uw page_mask = (sljit_uw)get_page_alignment(); - sljit_uw start = (sljit_uw)from; - sljit_uw end = (sljit_uw)to; - int prot = PROT_READ | (enable_exec ? PROT_EXEC : PROT_WRITE); - - SLJIT_ASSERT(start < end); - - start &= ~page_mask; - end = (end + page_mask) & ~page_mask; - - mprotect((void*)start, end - start, prot); -} - -#else /* windows */ - -SLJIT_API_FUNC_ATTRIBUTE void* sljit_malloc_exec(sljit_uw size) -{ - sljit_uw *ptr; - - size += sizeof(sljit_uw); - ptr = (sljit_uw*)VirtualAlloc(NULL, size, - MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE); - - if (!ptr) - return NULL; - - *ptr++ = size; - - return ptr; -} - -SLJIT_API_FUNC_ATTRIBUTE void sljit_free_exec(void* ptr) -{ - sljit_uw start = (sljit_uw)ptr - sizeof(sljit_uw); -#if defined(SLJIT_DEBUG) && SLJIT_DEBUG - sljit_uw page_mask = (sljit_uw)get_page_alignment(); - - SLJIT_ASSERT(!(start & page_mask)); -#endif - VirtualFree((void*)start, 0, MEM_RELEASE); -} - -static void sljit_update_wx_flags(void *from, void *to, sljit_s32 enable_exec) -{ - DWORD oldprot; - sljit_uw page_mask = (sljit_uw)get_page_alignment(); - sljit_uw start = (sljit_uw)from; - sljit_uw end = (sljit_uw)to; - DWORD prot = enable_exec ? PAGE_EXECUTE : PAGE_READWRITE; - - SLJIT_ASSERT(start < end); - - start &= ~page_mask; - end = (end + page_mask) & ~page_mask; - - VirtualProtect((void*)start, end - start, prot, &oldprot); -} - -#endif /* !windows */ - -SLJIT_API_FUNC_ATTRIBUTE void sljit_free_unused_memory_exec(void) -{ - /* This allocator does not keep unused memory for future allocations. */ -}