Changeset 8436590 in mainline for kernel/generic/src/lib/memfnc.c

Timestamp:

2011-04-07T21:38:17Z (13 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

033cbf82

Parents:

3acb285 (diff), ccca251 (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/src/proc/tasklet.c ) (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.c
- *  @brief Tasklet implementation
+
+/**
+ * @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.
  */
 
-#include <proc/tasklet.h>
-#include <synch/spinlock.h>
-#include <mm/slab.h>
-#include <config.h>
+#include <lib/memfnc.h>
+#include <typedefs.h>
 
-/** Spinlock protecting list of tasklets */
-SPINLOCK_INITIALIZE(tasklet_lock);
-
-/** Array of tasklet lists for every CPU */
-tasklet_descriptor_t **tasklet_list;
-
-void tasklet_init(void)
+/** 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)
 {
-        unsigned int i;
+        size_t i;
+        uint8_t *ptr = (uint8_t *) dst;
         
-        tasklet_list = malloc(sizeof(tasklet_descriptor_t *) * config.cpu_count, 0);
-        if (!tasklet_list)
-                panic("Error initializing tasklets.");
+        for (i = 0; i < cnt; i++)
+                ptr[i] = val;
         
-        for (i = 0; i < config.cpu_count; i++)
-                tasklet_list[i] = NULL;
-        
-        spinlock_initialize(&tasklet_lock, "tasklet_lock");
+        return dst;
 }
 
+/** 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;
+        
+        while (cnt-- != 0)
+                        *dp++ = *sp++;
+        
+        return dst;
+}
 
 /** @}