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nuttx/libs/libc
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yukangzhi 31b0d79b44 libs/crc: implement AUTOSAR-compatible CRC algorithm 
This patch adds an AUTOSAR-style CRC library used by E2E functionality.
It introduces multiple CRC variants (CRC8, CRC16, CRC32, CRC64) and the
corresponding public headers and implementation files.

Key changes:
- Public headers: `include/nuttx/crc8.h`, `include/nuttx/crc16.h`,
  `include/nuttx/crc32.h`, `include/nuttx/crc64.h` with new APIs for
  specific polynomial variants and incremental (part) helpers.
- Implementations added under `libs/libc/misc/` for several polynomials:
  - `lib_crc16h1021.c` (CRC-16 CCITT-FALSE)
  - `lib_crc16h8005.c`
  - `lib_crc32h04c11db7.c`
  - `lib_crc32hf4acfb13.c`
  - `lib_crc64emac.c`
  - `lib_crc8h1d.c`
  - `lib_crc8h2f.c`
- Build files updated to include the new sources.

This addition provides low-level CRC primitives required by higher-level
protocols and test suites.

Signed-off-by: yukangzhi <yukangzhi@xiaomi.com>
2026-01-30 17:32:15 +08:00
..
aio style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
assert libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
audio libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
builtin libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
ctype style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
dirent cmake:refine nuttx cmake build system fix CMake build missing part 2024-10-13 02:25:06 +08:00
dlfcn libs: unify Private Types banners 2025-05-28 10:17:15 +08:00
elf cmake(feat):define elf option and enable apps module build 2026-01-19 14:45:37 +08:00
errno libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
eventfd libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
fdt libs/libc/fdt/Make.defs: cannot move due to directory not empty bugfix 2024-10-09 15:42:17 +08:00
fixedmath libs: unify Private Types banners 2025-05-28 10:17:15 +08:00
gdbstub arch/arm64: fix backtrace register access and gdbstub config guard 2026-01-16 08:55:47 -03:00
gnssutils libc: remove reference to non-existent readme 2025-10-11 17:07:51 -04:00
grp libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
hex2bin stream_getc: use lib_stream_eof instead of EOF 2024-11-26 10:25:36 +08:00
inttypes libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
libgen libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
locale style/FAR: remove FAR qualifier 2025-11-10 10:56:29 +01:00
lzf libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
machine arch/x86_64: Add gprof 2026-01-20 22:43:38 +08:00
misc libs/crc: implement AUTOSAR-compatible CRC algorithm 2026-01-30 17:32:15 +08:00
net libs: unify Private Types banners 2025-05-28 10:17:15 +08:00
netdb libc/netdb: avoid unnecessary DNS notify if nameserver exists 2026-01-15 16:20:44 -03:00
obstack libs/libc/obstack/lib_obstack_free.c: fix object check within chunk 2025-12-13 18:13:19 -03:00
pthread pthread: make PTHREAD_MUTEX_DEFAULT_UNSAFE default true 2026-01-26 20:56:12 +08:00
pwd libs/libc/unistd: add getspnam function 2024-10-16 11:15:25 +08:00
queue libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
regex libs/libc/regex: remove logically dead code in regcomp.c 2026-01-24 19:28:56 +08:00
sched clock: remove 64-bit perf support for 32-bit systems 2026-01-26 21:14:38 +08:00
search libc/search: add foreach api for hcreate_data 2025-12-25 09:39:03 +08:00
semaphore pthread: move pthread_cond to userspace 2026-01-26 16:26:39 +08:00
signal sched/signal: Add support for disabling all signal functions 2026-01-18 08:24:13 -03:00
spawn libc/spawn:support get/set priority 2026-01-26 21:01:01 +08:00
stdio freopen: fix fdsan report error 2026-01-15 22:58:17 +08:00
stdlib libc: Add Kconfig option to disable hex-string to float parsing 2026-01-08 02:37:21 +08:00
stream libc/syslograwstream: Use memrchr to locate the newline character 2026-01-01 17:03:50 +08:00
string string:use builtin function to optimize libc function 2025-12-20 10:38:53 +08:00
symtab lib_libvsprintf.c:add option in Kconfig to control "%p*" special format specifier. 2024-10-15 15:33:13 +08:00
syslog drivers/syslog: Add RFC 5424 protocol support 2025-06-13 20:26:57 +08:00
termios libs: unify Private Types banners 2025-05-28 10:17:15 +08:00
time libc/localtime: rename offsetp to poffset 2025-12-19 13:46:21 -05:00
tls sched: fix regression from PR #18040 by adding NULL pointer safety 2026-01-23 16:59:55 +08:00
uio move readv/writev to the kernel 2024-10-30 17:07:54 +08:00
unistd libs/libc: replace critical section with spinlock in hostname operations 2026-01-17 14:13:07 +08:00
userfs style/FAR: remove FAR qualifier 2025-11-10 10:56:29 +01:00
uuid libc: Refine the arc4random_buf implementation 2024-10-26 18:04:21 -03:00
wchar style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
wctype libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
wqueue wqueue: fix the config typo error 2026-01-14 09:24:00 +08:00
zoneinfo libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
.gitignore libc/elf: rename modlib to libelf 2025-04-11 09:43:22 +08:00
CMakeLists.txt libs/libc: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00
Kconfig libc/elf: rename modlib to libelf 2025-04-11 09:43:22 +08:00
libc.csv sched/signal: Add support for disabling all signal functions 2026-01-18 08:24:13 -03:00
libc.h libc/machine:Add prefixes to libc functions implemented by arch 2024-10-31 18:11:16 +08:00
Makefile libc/elf: rename modlib to libelf 2025-04-11 09:43:22 +08:00