Changeset 8b655705 in mainline for kernel/generic/src/lib/memfnc.c

Timestamp:

2011-04-15T19:38:07Z (13 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

9dd730d1

Parents:

6b9e85b (diff), b2fb47f (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge mainline changes.

File:

• kernel/generic/src/lib/memfnc.c (moved) (moved from kernel/generic/include/proc/tasklet.h ) (2 diffs)

kernel/generic/src/lib/memfnc.c

@@ -1 @@
-/*
- * Copyright (c) 2007 Jan Hudecek
- * Copyright (c) 2008 Martin Decky
+        /*
+ * Copyright (c) 2011 Martin Decky
  * All rights reserved.
  *
@@ -28 +27 @@
  */
 
-/** @addtogroup genericproc
+/** @addtogroup generic
  * @{
  */
-/** @file tasklet.h
- * @brief Tasklets declarations
+
+/**
+ * @file
+ * @brief Memory string functions.
+ *
+ * This file provides architecture independent functions to manipulate blocks
+ * of memory. These functions are optimized as much as generic functions of
+ * this type can be.
  */
 
-#ifndef KERN_TASKLET_H_
-#define KERN_TASKLET_H_
+#include <lib/memfnc.h>
+#include <typedefs.h>
 
-#include <adt/list.h>
+/** Fill block of memory.
+ *
+ * Fill cnt bytes at dst address with the value val.
+ *
+ * @param dst Destination address to fill.
+ * @param val Value to fill.
+ * @param cnt Number of bytes to fill.
+ *
+ * @return Destination address.
+ *
+ */
+void *memset(void *dst, int val, size_t cnt)
+{
+        size_t i;
+        uint8_t *ptr = (uint8_t *) dst;
+        
+        for (i = 0; i < cnt; i++)
+                ptr[i] = val;
+        
+        return dst;
+}
 
-/** Tasklet callback type */
-typedef void (* tasklet_callback_t)(void *arg);
-
-/** Tasklet state */
-typedef enum {
-        NotActive,
-        Scheduled,
-        InProgress,
-        Disabled
-} tasklet_state_t;
-
-/** Structure describing a tasklet */
-typedef struct tasklet_descriptor {
-        link_t link;
+/** Move memory block without overlapping.
+ *
+ * Copy cnt bytes from src address to dst address. The source
+ * and destination memory areas cannot overlap.
+ *
+ * @param dst Destination address to copy to.
+ * @param src Source address to copy from.
+ * @param cnt Number of bytes to copy.
+ *
+ * @return Destination address.
+ *
+ */
+void *memcpy(void *dst, const void *src, size_t cnt)
+{
+        uint8_t *dp = (uint8_t *) dst;
+        const uint8_t *sp = (uint8_t *) src;
         
-        /** Callback to call */
-        tasklet_callback_t callback;
+        while (cnt-- != 0)
+                        *dp++ = *sp++;
         
-        /** Argument passed to the callback */
-        void *arg;
-        
-        /** State of the tasklet */
-        tasklet_state_t state;
-} tasklet_descriptor_t;
-
-
-extern void tasklet_init(void);
-
-#endif
+        return dst;
+}
 
 /** @}