shared: Introduce new top-level dir and move 1st party lib code there.

This commit moves all first-party code developed for this project from lib/
to shared/, so that lib/ now only contains third-party code.

The following directories are moved as-is from lib to shared:

    lib/libc            -> shared/libc
    lib/memzip          -> shared/memzip
    lib/netutils        -> shared/netutils
    lib/timeutils       -> shared/timeutils
    lib/upytesthelper   -> shared/upytesthelper

All files in lib/embed/ have been moved to shared/libc/.

lib/mp-readline has been moved to shared/readline.

lib/utils has been moved to shared/runtime, with the exception of
lib/utils/printf.c which has been moved to shared/libc/printf.c.

Signed-off-by: Damien George <damien@micropython.org>

1 files changed, 0 insertions, 254 deletions

diff --git a/lib/libc/string0.c b/lib/libc/string0.c
deleted file mode 100644
index 19ad14d0f..000000000
--- a/lib/libc/string0.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- * This file is part of the MicroPython project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2013, 2014 Damien P. George
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include <stdint.h>
-#include <string.h>
-
-#define likely(x) __builtin_expect((x), 1)
-
-void *memcpy(void *dst, const void *src, size_t n) {
-    if (likely(!(((uintptr_t)dst) & 3) && !(((uintptr_t)src) & 3))) {
-        // pointers aligned
-        uint32_t *d = dst;
-        const uint32_t *s = src;
-
-        // copy words first
-        for (size_t i = (n >> 2); i; i--) {
-            *d++ = *s++;
-        }
-
-        if (n & 2) {
-            // copy half-word
-            *(uint16_t*)d = *(const uint16_t*)s;
-            d = (uint32_t*)((uint16_t*)d + 1);
-            s = (const uint32_t*)((const uint16_t*)s + 1);
-        }
-
-        if (n & 1) {
-            // copy byte
-            *((uint8_t*)d) = *((const uint8_t*)s);
-        }
-    } else {
-        // unaligned access, copy bytes
-        uint8_t *d = dst;
-        const uint8_t *s = src;
-
-        for (; n; n--) {
-            *d++ = *s++;
-        }
-    }
-
-    return dst;
-}
-
-void *memmove(void *dest, const void *src, size_t n) {
-    if (src < dest && (uint8_t*)dest < (const uint8_t*)src + n) {
-        // need to copy backwards
-        uint8_t *d = (uint8_t*)dest + n - 1;
-        const uint8_t *s = (const uint8_t*)src + n - 1;
-        for (; n > 0; n--) {
-            *d-- = *s--;
-        }
-        return dest;
-    } else {
-        // can use normal memcpy
-        return memcpy(dest, src, n);
-    }
-}
-
-void *memset(void *s, int c, size_t n) {
-    if (c == 0 && ((uintptr_t)s & 3) == 0) {
-        // aligned store of 0
-        uint32_t *s32 = s;
-        for (size_t i = n >> 2; i > 0; i--) {
-            *s32++ = 0;
-        }
-        if (n & 2) {
-            *((uint16_t*)s32) = 0;
-            s32 = (uint32_t*)((uint16_t*)s32 + 1);
-        }
-        if (n & 1) {
-            *((uint8_t*)s32) = 0;
-        }
-    } else {
-        uint8_t *s2 = s;
-        for (; n > 0; n--) {
-            *s2++ = c;
-        }
-    }
-    return s;
-}
-
-int memcmp(const void *s1, const void *s2, size_t n) {
-    const uint8_t *s1_8 = s1;
-    const uint8_t *s2_8 = s2;
-    while (n--) {
-        char c1 = *s1_8++;
-        char c2 = *s2_8++;
-        if (c1 < c2) return -1;
-        else if (c1 > c2) return 1;
-    }
-    return 0;
-}
-
-void *memchr(const void *s, int c, size_t n) {
-    if (n != 0) {
-        const unsigned char *p = s;
-
-        do {
-            if (*p++ == c)
-                return ((void *)(p - 1));
-        } while (--n != 0);
-    }
-    return 0;
-}
-
-size_t strlen(const char *str) {
-    int len = 0;
-    for (const char *s = str; *s; s++) {
-        len += 1;
-    }
-    return len;
-}
-
-int strcmp(const char *s1, const char *s2) {
-    while (*s1 && *s2) {
-        char c1 = *s1++; // XXX UTF8 get char, next char
-        char c2 = *s2++; // XXX UTF8 get char, next char
-        if (c1 < c2) return -1;
-        else if (c1 > c2) return 1;
-    }
-    if (*s2) return -1;
-    else if (*s1) return 1;
-    else return 0;
-}
-
-int strncmp(const char *s1, const char *s2, size_t n) {
-    while (*s1 && *s2 && n > 0) {
-        char c1 = *s1++; // XXX UTF8 get char, next char
-        char c2 = *s2++; // XXX UTF8 get char, next char
-        n--;
-        if (c1 < c2) return -1;
-        else if (c1 > c2) return 1;
-    }
-    if (n == 0) return 0;
-    else if (*s2) return -1;
-    else if (*s1) return 1;
-    else return 0;
-}
-
-char *strcpy(char *dest, const char *src) {
-    char *d = dest;
-    while (*src) {
-        *d++ = *src++;
-    }
-    *d = '\0';
-    return dest;
-}
-
-// Public Domain implementation of strncpy from:
-// http://en.wikibooks.org/wiki/C_Programming/Strings#The_strncpy_function
-char *strncpy(char *s1, const char *s2, size_t n) {
-     char *dst = s1;
-     const char *src = s2;
-     /* Copy bytes, one at a time.  */
-     while (n > 0) {
-         n--;
-         if ((*dst++ = *src++) == '\0') {
-             /* If we get here, we found a null character at the end
-                of s2, so use memset to put null bytes at the end of
-                s1.  */
-             memset(dst, '\0', n);
-             break;
-         }
-     }
-     return s1;
- }
-
-// needed because gcc optimises strcpy + strcat to this
-char *stpcpy(char *dest, const char *src) {
-    while (*src) {
-        *dest++ = *src++;
-    }
-    *dest = '\0';
-    return dest;
-}
-
-char *strcat(char *dest, const char *src) {
-    char *d = dest;
-    while (*d) {
-        d++;
-    }
-    while (*src) {
-        *d++ = *src++;
-    }
-    *d = '\0';
-    return dest;
-}
-
-// Public Domain implementation of strchr from:
-// http://en.wikibooks.org/wiki/C_Programming/Strings#The_strchr_function
-char *strchr(const char *s, int c)
-{
-    /* Scan s for the character.  When this loop is finished,
-       s will either point to the end of the string or the
-       character we were looking for.  */
-    while (*s != '\0' && *s != (char)c)
-        s++;
-    return ((*s == c) ? (char *) s : 0);
-}
-
-
-// Public Domain implementation of strstr from:
-// http://en.wikibooks.org/wiki/C_Programming/Strings#The_strstr_function
-char *strstr(const char *haystack, const char *needle)
-{
-    size_t needlelen;
-    /* Check for the null needle case.  */
-    if (*needle == '\0')
-        return (char *) haystack;
-    needlelen = strlen(needle);
-    for (; (haystack = strchr(haystack, *needle)) != 0; haystack++)
-        if (strncmp(haystack, needle, needlelen) == 0)
-            return (char *) haystack;
-    return 0;
-}
-
-size_t strspn(const char *s, const char *accept) {
-    const char *ss = s;
-    while (*s && strchr(accept, *s) != NULL) {
-        ++s;
-    }
-    return s - ss;
-}
-
-size_t strcspn(const char *s, const char *reject) {
-    const char *ss = s;
-    while (*s && strchr(reject, *s) == NULL) {
-        ++s;
-    }
-    return s - ss;
-}