Allocate block system call stub

Change-Id: Ief3476b5306bc231c9d3044b2736fcd195e840b1
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/243
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

4 files changed, 56 insertions, 4 deletions

diff --git a/src/include/kernel/basesegment.H b/src/include/kernel/basesegment.H
index 7f1c78dfa..8086c08b5 100644
--- a/src/include/kernel/basesegment.H
+++ b/src/include/kernel/basesegment.H
@@ -6,6 +6,8 @@
 
 #include <kernel/segment.H>
 
+// Forward declaration.
+class MessageQueue;
 class Block;
 
 /** @class BaseSegment
@@ -41,6 +43,16 @@ class BaseSegment : public Segment
          */
         bool handlePageFault(task_t* i_task, uint64_t i_addr);
 
+        /**
+         * @brief Allocates a block of virtual memory of the given size
+         * @param i_mq[in] - Message queue to be associated with the block
+         * @param i_va[in] - Base virtual address of the block to be allocated
+         * @param i_size[in] - Requested virtual memory size of the block
+         * @return int - 0 for successful block allocation, non-zero otherwise
+         */
+        static int mmAllocBlock(MessageQueue* i_mq,void* i_va,
+                                uint64_t i_size);
+
     private:
         /**
          * @brief Internal implementation of init function.
diff --git a/src/include/kernel/syscalls.H b/src/include/kernel/syscalls.H
index a76bb82a9..dad90056c 100644
--- a/src/include/kernel/syscalls.H
+++ b/src/include/kernel/syscalls.H
@@ -56,17 +56,18 @@ namespace Systemcalls
 
             /** futex_wait() */
     FUTEX_WAIT,
-
             /** futex_wake() */
     FUTEX_WAKE,
 
             /** shutdown() */
     MISC_SHUTDOWN,
-
             /** cpu_core_type() */
-        MISC_CPUCORETYPE,
+    MISC_CPUCORETYPE,
             /** cpu_dd_level() */
-        MISC_CPUDDLEVEL,
+    MISC_CPUDDLEVEL,
+
+            /** mm_alloc_block() */
+    MM_ALLOC_BLOCK,
 
 	SYSCALL_MAX
     };
diff --git a/src/include/kernel/vmmmgr.H b/src/include/kernel/vmmmgr.H
index feee7a731..7c8c63c22 100644
--- a/src/include/kernel/vmmmgr.H
+++ b/src/include/kernel/vmmmgr.H
@@ -6,6 +6,8 @@
 #include <kernel/types.h>
 #include <kernel/spinlock.H>
 
+class MessageQueue;
+
 class VmmManager
 {
     public:
@@ -68,6 +70,16 @@ class VmmManager
          */
         static int devUnmap(void* ea);
 
+        /**
+         * @brief Allocates a block of virtual memory of the given size
+         * @param i_mq[in] - Message queue to be associated with the block
+         * @param i_va[in] - Base virtual address of the block to be allocated
+         * @param i_size[in] - Requested virtual memory size of the block
+         * @return int - 0 for successful block allocation, non-zero otherwise
+         */
+        static int mmAllocBlock(MessageQueue* i_mq,void* i_va,uint64_t i_size);
+
+
     protected:
         VmmManager();
         ~VmmManager() {};
diff --git a/src/include/sys/mm.h b/src/include/sys/mm.h
new file mode 100644
index 000000000..4719ff7df
--- /dev/null
+++ b/src/include/sys/mm.h
@@ -0,0 +1,27 @@
+#ifndef __SYS_MM_H
+#define __SYS_MM_H
+
+#include <stdint.h>
+#include <sys/msg.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/** @fn mm_alloc_block()
+ *  @brief System call to allocate virtual memory block in the base segment
+ *
+ *  @param[in] mq - Message queue to be associated with the block
+ *  @param[in] va - Base virtual address of the block to be allocated
+ *  @param[in] size - Requested virtual memory size of the block
+ *
+ *  @return int - 0 for successful block allocation, non-zero otherwise
+ */
+int mm_alloc_block(msg_q_t mq,void* va,uint64_t size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif