libc/elf: rename modlib to libelf

Renaming "modlib" to "libelf" is more in line with the implementation content, which makes it easier for individual developers to understand the capabilities of this module. CONFIG_LIBC_MODLIB -> CONFIG_LIBC_ELF Signed-off-by: chao an <anchao.archer@bytedance.com>
2026-05-30 05:16:47 +08:00 · 2025-04-10 09:51:25 +08:00
parent 1b9e6a8563
commit 52482219c8
120 changed files with 788 additions and 785 deletions
@@ -0,0 +1,112 @@
+/****************************************************************************
+ * libs/libc/elf/elf_iobuffer.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/lib/elf.h>
+
+#include "libc.h"
+#include "elf/elf.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: libelf_allocbuffer
+ *
+ * Description:
+ *   Perform the initial allocation of the I/O buffer, if it has not already
+ *   been allocated.
+ *
+ * Returned Value:
+ *   0 (OK) is returned on success and a negated errno is returned on
+ *   failure.
+ *
+ ****************************************************************************/
+
+int libelf_allocbuffer(FAR struct mod_loadinfo_s *loadinfo)
+{
+  /* Has a buffer been allocated> */
+
+  if (!loadinfo->iobuffer)
+    {
+      /* No.. allocate one now */
+
+      loadinfo->iobuffer = (FAR uint8_t *)
+                           lib_malloc(CONFIG_LIBC_ELF_BUFFERSIZE);
+      if (!loadinfo->iobuffer)
+        {
+          berr("ERROR: Failed to allocate an I/O buffer\n");
+          return -ENOMEM;
+        }
+
+      loadinfo->buflen = CONFIG_LIBC_ELF_BUFFERSIZE;
+    }
+
+  return OK;
+}
+
+/****************************************************************************
+ * Name: libelf_reallocbuffer
+ *
+ * Description:
+ *   Increase the size of I/O buffer by the specified buffer increment.
+ *
+ * Returned Value:
+ *   0 (OK) is returned on success and a negated errno is returned on
+ *   failure.
+ *
+ ****************************************************************************/
+
+int libelf_reallocbuffer(FAR struct mod_loadinfo_s *loadinfo,
+                         size_t increment)
+{
+  FAR void *buffer;
+  size_t newsize;
+
+  /* Get the new size of the allocation */
+
+  newsize = loadinfo->buflen + increment;
+
+  /* And perform the reallocation */
+
+  buffer = lib_realloc(loadinfo->iobuffer, newsize);
+  if (!buffer)
+    {
+      berr("ERROR: Failed to reallocate the I/O buffer\n");
+      return -ENOMEM;
+    }
+
+  /* Save the new buffer info */
+
+  loadinfo->iobuffer = buffer;
+  loadinfo->buflen   = newsize;
+  return OK;
+}