Changeset 449 for soft/giet_vm/giet_kernel/kernel_utils.c

Timestamp:

Nov 11, 2014, 4:14:55 PM (10 years ago)

Author:

alain

Message:

Introducing the CMA_RX, CMA_TX, NIC_RX, NIC_TX slots in the task context.
This allows an user task to have a private NIC channel and a private CMA channel.

File:

• soft/giet_vm/giet_kernel/kernel_utils.c (modified) (1 diff)

soft/giet_vm/giet_kernel/kernel_utils.c

@@ -162 +162 @@
 }  // end _printf()
 
+///////////////////////////////////////////////////
+unsigned int _atomic_increment( unsigned int* ptr )
+{
+    unsigned int value;
+
+    asm volatile (
+        "_atomic_increment_try:             \n"
+        "ll   $3,    0(%1)                  \n"
+        "move %0,    $3                     \n"
+        "addi $3,    $3,     1              \n"     
+        "sc   $3,    0(%1)                  \n"
+        "beqz $3,    _atomic_increment_try  \n"
+        : "=r" (value) 
+        : "r" (ptr)
+        : "$3", "memory" );
+
+    return value;
+}
+
 // Local Variables:
 // tab-width: 4