From 5278f6def4248391a481382bd7b0042b04c829f2 Mon Sep 17 00:00:00 2001 From: Richard Qin Date: Tue, 21 Apr 2026 23:16:50 +0800 Subject: feat: add string manipulation functions derived from musl libc This commit introduces a variety of string manipulation functions, including: - `memmem`: Searches for a substring in a memory area. - `memmove`: Safely copies memory areas, handling overlaps. - `mempcpy`: Copies memory and returns a pointer to the end of the destination. - `memrchr`: Finds the last occurrence of a character in a memory area. - `memset`: Fills a memory area with a specified value. - `rindex`: Returns the last occurrence of a character in a string. - `stpcpy` and `stpncpy`: Copies strings and returns a pointer to the end. - `strcat`, `strchr`, `strcspn`, `strlcat`, `strlcpy`, `strlen`, `strncat`, `strncmp`, `strncpy`, `strnlen`, `strpbrk`, `strrchr`, `strstr`, `strtok`, and `strtok_r`: Various string manipulation functions for concatenation, searching, and tokenization. Assembly implementations for `memcpy`, `memmove`, and `memset` are also included for optimized performance on x86_64 architectures. --- na/include/libc-shim/endian.h | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 na/include/libc-shim/endian.h (limited to 'na/include/libc-shim/endian.h') diff --git a/na/include/libc-shim/endian.h b/na/include/libc-shim/endian.h new file mode 100644 index 0000000..8346386 --- /dev/null +++ b/na/include/libc-shim/endian.h @@ -0,0 +1,9 @@ +/* Shim: endianness for musl string functions */ +#ifndef _ENDIAN_H +#define _ENDIAN_H + +#define __LITTLE_ENDIAN 1234 +#define __BIG_ENDIAN 4321 +#define __BYTE_ORDER __LITTLE_ENDIAN /* RISC-V is LE */ + +#endif -- cgit v1.2.3