Split solana_sdk.h (#19172)

sdk/bpf/c/inc/sol/string.h

@@ -0,0 +1,81 @@
+#pragma once
+/**
+ * @brief Solana string and memory system calls and utilities
+ */
+
+#include <sol/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Copies memory
+ */
+static void sol_memcpy(void *dst, const void *src, int len) {
+  for (int i = 0; i < len; i++) {
+    *((uint8_t *)dst + i) = *((const uint8_t *)src + i);
+  }
+}
+
+/**
+ * Compares memory
+ */
+static int sol_memcmp(const void *s1, const void *s2, int n) {
+  for (int i = 0; i < n; i++) {
+    uint8_t diff = *((uint8_t *)s1 + i) - *((const uint8_t *)s2 + i);
+    if (diff) {
+      return diff;
+    }
+  }
+  return 0;
+}
+
+/**
+ * Fill a byte string with a byte value
+ */
+static void *sol_memset(void *b, int c, size_t len) {
+  uint8_t *a = (uint8_t *) b;
+  while (len > 0) {
+    *a = c;
+    a++;
+    len--;
+  }
+}
+
+/**
+ * Find length of string
+ */
+static size_t sol_strlen(const char *s) {
+  size_t len = 0;
+  while (*s) {
+    len++;
+    s++;
+  }
+  return len;
+}
+
+/**
+ * Internal memory alloc/free function
+ */
+void *sol_alloc_free_(uint64_t size, void *ptr);
+
+/**
+ * Alloc zero-initialized memory
+ */
+static void *sol_calloc(size_t nitems, size_t size) {
+  return sol_alloc_free_(nitems * size, 0);
+}
+
+/**
+ * Deallocates the memory previously allocated by sol_calloc
+ */
+static void sol_free(void *ptr) {
+  (void) sol_alloc_free_(0, ptr);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+/**@}*/