Changeset 3115355 in mainline for kernel

Timestamp:

2007-12-31T10:14:38Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

27d293a

Parents:

badbd888

Message:

Simplify the IPC_M_DATA_WRITE protocol. Do not pass the source address space
virtual address to the recipient. This feature was not used anyway. Now
IPC_M_DATA_WRITE and IPC_M_DATA_READ are feature-aligned.

Location:

kernel/generic

Files:

• include/ipc/ipc.h (modified) (1 diff)
• src/ipc/sysipc.c (modified) (2 diffs)

kernel/generic/include/ipc/ipc.h

@@ -175 +175 @@
 
 /** Send data to another address space over IPC.
- * - ARG1 - destination address space virtual address, may be overriden by the
- *          recipient
- * - ARG2 - source address space virtual address
- * - ARG3 - size of data to be copied, may be overriden by the recipient
+ * - ARG1 - source address space virtual address
+ * - ARG2 - size of data to be copied, may be overriden by the recipient
  *
  * on answer, the recipient must set:
  *
  * - ARG1 - final destination address space virtual address
- * - ARG3 - final size of data to be copied
+ * - ARG2 - final size of data to be copied
  */
 #define IPC_M_DATA_WRITE        6

kernel/generic/src/ipc/sysipc.c

@@ -273 +273 @@
 
                         dst = IPC_GET_ARG1(answer->data);
-                        size = IPC_GET_ARG3(answer->data);
-                        max_size = IPC_GET_ARG3(*olddata);
+                        size = IPC_GET_ARG2(answer->data);
+                        max_size = IPC_GET_ARG2(*olddata);
 
                         if (size <= max_size) {
@@ -326 +326 @@
                 break;
         case IPC_M_DATA_WRITE:
-                src = IPC_GET_ARG2(call->data);
-                size = IPC_GET_ARG3(call->data);
+                src = IPC_GET_ARG1(call->data);
+                size = IPC_GET_ARG2(call->data);
                 
                 if ((size <= 0) || (size > DATA_XFER_LIMIT))