diff --git a/kernel/CMakeLists.txt b/kernel/CMakeLists.txt index 69f1a830..30d904ad 100644 --- a/kernel/CMakeLists.txt +++ b/kernel/CMakeLists.txt @@ -141,9 +141,9 @@ set(BAN_SOURCES ../BAN/BAN/Time.cpp ) -set(LIBC_SOURCES - ../libc/ctype.cpp - ../libc/string.cpp +set(KLIBC_SOURCES + klibc/ctype.cpp + klibc/string.cpp ) set(LIBELF_SOURCES @@ -154,7 +154,7 @@ set(KERNEL_SOURCES ${KERNEL_SOURCES} ${LAI_SOURCES} ${BAN_SOURCES} - ${LIBC_SOURCES} + ${KLIBC_SOURCES} ${LIBELF_SOURCES} ) diff --git a/kernel/klibc/ctype.cpp b/kernel/klibc/ctype.cpp new file mode 100644 index 00000000..67744fa4 --- /dev/null +++ b/kernel/klibc/ctype.cpp @@ -0,0 +1,80 @@ +#include + +int isalnum(int c) +{ + return isdigit(c) || isalpha(c); +} + +int isalpha(int c) +{ + return islower(c) || isupper(c); +} + +int isascii(int c) +{ + return c <= 0x7F; +} + +int isblank(int c) +{ + return c == ' ' || c == '\t'; +} + +int iscntrl(int c) +{ + return c < 32 || c == 0x7F; +} + +int isdigit(int c) +{ + return '0' <= c && c <= '9'; +} + +int isgraph(int c) +{ + return 0x21 <= c && c <= 0x7E; +} + +int islower(int c) +{ + return 'a' <= c && c <= 'z'; +} + +int isprint(int c) +{ + return isgraph(c) || c == ' '; +} + +int ispunct(int c) +{ + return isgraph(c) && !isalnum(c); +} + +int isspace(int c) +{ + return c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' || c == '\v'; +} + +int isupper(int c) +{ + return 'A' <= c && c <= 'Z'; +} + +int isxdigit(int c) +{ + return isdigit(c) || ('a' <= c && c <= 'f') || ('A' <= c && c <= 'F'); +} + +int toupper(int c) +{ + if (!islower(c)) + return c; + return 'A' + (c - 'a'); +} + +int tolower(int c) +{ + if (!isupper(c)) + return c; + return 'a' + (c - 'A'); +} diff --git a/kernel/klibc/string.cpp b/kernel/klibc/string.cpp new file mode 100644 index 00000000..c07a121f --- /dev/null +++ b/kernel/klibc/string.cpp @@ -0,0 +1,166 @@ +#include +#include + +int memcmp(const void* s1, const void* s2, size_t n) +{ + auto* u1 = static_cast(s1); + auto* u2 = static_cast(s2); + for (size_t i = 0; i < n; i++) + if (u1[i] != u2[i]) + return u1[i] - u2[i]; + return 0; +} + +void* memcpy(void* __restrict s1, const void* __restrict s2, size_t n) +{ + auto* dst = static_cast(s1); + auto* src = static_cast(s2); + for (size_t i = 0; i < n; i++) + dst[i] = src[i]; + return s1; +} + +void* memmove(void* s1, const void* s2, size_t n) +{ + auto* dst = static_cast(s1); + auto* src = static_cast(s2); + if (dst < src) + { + for (size_t i = 0; i < n; i++) + dst[i] = src[i]; + } + else + { + for (size_t i = 1; i <= n; i++) + dst[n - i] = src[n - i]; + } + return s1; +} + +void* memset(void* s, int c, size_t n) +{ + auto* u = static_cast(s); + for (size_t i = 0; i < n; i++) + u[i] = c; + return s; +} + +size_t strlen(const char* str) +{ + size_t len = 0; + while (str[len]) + len++; + return len; +} + +char* strcpy(char* __restrict dst, const char* __restrict src) +{ + size_t i = 0; + for (; src[i]; i++) + dst[i] = src[i]; + dst[i] = '\0'; + return dst; +} + +char* strncpy(char* __restrict dst, const char* __restrict src, size_t len) +{ + size_t i = 0; + for (; i < len && src[i]; i++) + dst[i] = src[i]; + if (i < len) + dst[i] = '\0'; + return dst; +} + +const char* strerrordesc_np(int error) +{ + switch (error) + { + case 0: return "Success"; + case E2BIG: return "Argument list too long."; + case EACCES: return "Permission denied."; + case EADDRINUSE: return "Address in use."; + case EADDRNOTAVAIL: return "Address not available."; + case EAFNOSUPPORT: return "Address family not supported."; + case EAGAIN: return "Resource unavailable, try again."; + case EALREADY: return "Connection already in progress."; + case EBADF: return "Bad file descriptor."; + case EBADMSG: return "Bad message."; + case EBUSY: return "Device or resource busy."; + case ECANCELED: return "Operation canceled."; + case ECHILD: return "No child processes."; + case ECONNABORTED: return "Connection aborted."; + case ECONNREFUSED: return "Connection refused."; + case ECONNRESET: return "Connection reset."; + case EDEADLK: return "Resource deadlock would occur."; + case EDESTADDRREQ: return "Destination address required."; + case EDOM: return "Mathematics argument out of domain of function."; + case EDQUOT: return "Reserved."; + case EEXIST: return "File exists."; + case EFAULT: return "Bad address."; + case EFBIG: return "File too large."; + case EHOSTUNREACH: return "Host is unreachable."; + case EIDRM: return "Identifier removed."; + case EILSEQ: return "Illegal byte sequence."; + case EINPROGRESS: return "Operation in progress."; + case EINTR: return "Interrupted function."; + case EINVAL: return "Invalid argument."; + case EIO: return "I/O error."; + case EISCONN: return "Socket is connected."; + case EISDIR: return "Is a directory."; + case ELOOP: return "Too many levels of symbolic links."; + case EMFILE: return "File descriptor value too large."; + case EMLINK: return "Too many links."; + case EMSGSIZE: return "Message too large."; + case EMULTIHOP: return "Reserved."; + case ENAMETOOLONG: return "Filename too long."; + case ENETDOWN: return "Network is down."; + case ENETRESET: return "Connection aborted by network."; + case ENETUNREACH: return "Network unreachable."; + case ENFILE: return "Too many files open in system."; + case ENOBUFS: return "No buffer space available."; + case ENODATA: return "No message is available on the STREAM head read queue."; + case ENODEV: return "No such device."; + case ENOENT: return "No such file or directory."; + case ENOEXEC: return "Executable file format error."; + case ENOLCK: return "No locks available."; + case ENOLINK: return "Reserved."; + case ENOMEM: return "Not enough space."; + case ENOMSG: return "No message of the desired type."; + case ENOPROTOOPT: return "Protocol not available."; + case ENOSPC: return "No space left on device."; + case ENOSR: return "No STREAM resources."; + case ENOSTR: return "Not a STREAM."; + case ENOSYS: return "Functionality not supported."; + case ENOTCONN: return "The socket is not connected."; + case ENOTDIR: return "Not a directory or a symbolic link to a directory."; + case ENOTEMPTY: return "Directory not empty."; + case ENOTRECOVERABLE: return "State not recoverable."; + case ENOTSOCK: return "Not a socket."; + case ENOTSUP: return "Not supported."; + case ENOTTY: return "Inappropriate I/O control operation."; + case ENXIO: return "No such device or address."; + case EOPNOTSUPP: return "Operation not supported on socket ."; + case EOVERFLOW: return "Value too large to be stored in data type."; + case EOWNERDEAD: return "Previous owner died."; + case EPERM: return "Operation not permitted."; + case EPIPE: return "Broken pipe."; + case EPROTO: return "Protocol error."; + case EPROTONOSUPPORT: return "Protocol not supported."; + case EPROTOTYPE: return "Protocol wrong type for socket."; + case ERANGE: return "Result too large."; + case EROFS: return "Read-only file system."; + case ESPIPE: return "Invalid seek."; + case ESRCH: return "No such process."; + case ESTALE: return "Reserved."; + case ETIME: return "Stream ioctl() timeout."; + case ETIMEDOUT: return "Connection timed out."; + case ETXTBSY: return "Text file busy."; + case EWOULDBLOCK: return "Operation would block."; + case EXDEV: return "Cross-device link."; + case EEXISTS: return "File exists"; + case ENOTBLK: return "Block device required"; + case EUNKNOWN: return "Unknown error"; + } + return nullptr; +} diff --git a/libc/string.cpp b/libc/string.cpp index 6398f65c..5f939e02 100644 --- a/libc/string.cpp +++ b/libc/string.cpp @@ -136,7 +136,6 @@ char* strncat(char* __restrict__ dest, const char* __restrict__ src, size_t n) return dest; } -#ifndef __is_kernel char* strdup(const char* str) { const size_t size = strlen(str) + 1; @@ -162,9 +161,7 @@ char* strndup(const char* str, size_t size) memcpy(new_str, str, size); return new_str; } -#endif -__attribute__((optimize("-O0"))) size_t strlen(const char* str) { size_t len = 0;