feat: support compiling to wasm32-unknown-unknown

crates/language/wasm/src/string.c

@@ -0,0 +1,60 @@
+#include <string.h>
+
+int memcmp(const void *lhs, const void *rhs, size_t count) {
+  const unsigned char *l = lhs;
+  const unsigned char *r = rhs;
+  while (count--) {
+    if (*l != *r) {
+      return *l - *r;
+    }
+    l++;
+    r++;
+  }
+  return 0;
+}
+
+void *memcpy(void *restrict dst, const void *restrict src, size_t size) {
+  unsigned char *d = dst;
+  const unsigned char *s = src;
+  while (size--) {
+    *d++ = *s++;
+  }
+  return dst;
+}
+
+void *memmove(void *dst, const void *src, size_t count) {
+  unsigned char *d = dst;
+  const unsigned char *s = src;
+  if (d < s) {
+    while (count--) {
+      *d++ = *s++;
+    }
+  } else if (d > s) {
+    d += count;
+    s += count;
+    while (count--) {
+      *(--d) = *(--s);
+    }
+  }
+  return dst;
+}
+
+void *memset(void *dst, int value, size_t count) {
+  unsigned char *p = dst;
+  while (count--) {
+    *p++ = (unsigned char)value;
+  }
+  return dst;
+}
+
+int strncmp(const char *left, const char *right, size_t n) {
+  while (n-- > 0) {
+    if (*left != *right) {
+      return *(unsigned char *)left - *(unsigned char *)right;
+    }
+    if (*left == '\0') break;
+    left++;
+    right++;
+  }
+  return 0;
+}