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nuttx/libs/libc
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ganjing 931d5f50d4 libs/libc/risc-v: Add optimized strlcpy. 
Add word-at-a-time strlcpy using DETECTNULL for both the copy phase
and the strlen tail when truncated.  The copy loop aligns src and
processes a register at a time, falling to bytewise for the last word
containing the terminator.  When truncated, the remaining src length
is measured with a second word-at-a-time loop.

strlcpy has 46 call sites in a typical kernel image (more than strcpy)
and is not covered by newlib OPTSPEED, making it a high-value target.

Assisted-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Signed-off-by: ganjing <ganjing@xiaomi.com>
2026-08-12 10:23:47 +08:00
..
aio
assert
audio
builtin libc/builtin: support per-application priority/stacksize under KERNEL build. 2026-07-13 15:23:39 -03:00
ctype
dirent libs/libc/dirent: preserve errno on readdir() end-of-directory 2026-06-02 23:34:25 +08:00
dlfcn libc/dlfcn: Count opens so a library can be shared. 2026-08-04 11:12:49 -03:00
elf cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
errno
eventfd
fdt cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
fixedmath
gdbstub
gnssutils cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
grp libc/grp: add getgrouplist() 2026-06-23 23:09:22 +08:00
hex2bin
inttypes
libgen
locale
lzf
machine libs/libc/risc-v: Add optimized strlcpy. 2026-08-12 10:23:47 +08:00
misc libc/crc32: add IEEE-compatible crc32_ieee for Linux/zlib interop 2026-07-03 10:18:28 +08:00
net
netdb libs/libc/netdb: Size an answer header by its header, not by its union. 2026-08-08 15:02:15 -03:00
obstack
pthread arch, sched/signal: Fix compilation with ENABLE_PARTIAL_SIGNALS=y 2026-06-16 17:07:32 +08:00
pwd libc/pwd: default ostest multiuser passwd path to /tmp/ostest_passwd 2026-07-30 09:48:10 +08:00
queue
regex
sched
search
semaphore sched/semaphore: Keep a negative task id out of the mutex holder. 2026-08-09 10:05:30 +08:00
signal
spawn spawn: allow zero stacksize/priority to use binary loader defaults 2026-07-15 12:24:44 -03:00
stdio !include/fcntl.h: align open flags with Linux values 2026-06-30 13:43:44 +08:00
stdlib libs/libc: support explicit bases up to 36 2026-08-01 20:08:32 +08:00
stream libc/stream: Check lowout bounds before access 2026-07-06 09:02:22 +02:00
string
symtab libs/libc/symtab: fix bogus symbol size under SYMTAB_ORDEREDBYNAME 2026-08-05 21:51:25 +08:00
syslog
termios drivers/serial: add job-control TTY ioctls and libc wrappers 2026-06-23 16:26:53 -03:00
time libc/time: Fix POSIX timezone string parsing. 2026-07-25 19:54:18 +08:00
tls
uio
unistd !sched/arch/libc: Give fork() and vfork() their real, separate semantics. 2026-08-10 08:57:30 -03:00
userfs
uuid
wchar
wctype
wqueue !sched/clock: remove CONFIG_SYSTEM_TIME64 and always use 64-bit time 2026-05-19 16:21:28 +08:00
zoneinfo tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
.gitignore
CMakeLists.txt
Kconfig
libc.csv !sched/arch/libc: Give fork() and vfork() their real, separate semantics. 2026-08-10 08:57:30 -03:00
libc.h libs/libc/risc-v: Add optimized string and memory functions. 2026-08-12 10:23:47 +08:00
limits_check.c libs/libc: add limits checks 2026-07-02 09:02:21 -03:00
Makefile tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00