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e7b0e46065
This will help when syscalls have long arguments individual utcbs can be mapped to server tasks and kept mapped in until the tasks die, as opposed to map requests every time a server task maps a different utcb at the same virtual address. The changes have preparation code to also passing the utcb info through the stack as part of the environment. To sum up env and arg regions have also been added above the stack and env region is to be used to pass on the utcb address information at task startup.
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
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* Copyright (C) 2007, 2008 Bahadir Balban
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*
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* This file contains ipc definitions that are needed for server tasks
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* to communicate with each other. For example common shared memory ids
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* between two servers, or common ipc tags used between two servers are
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* defined here.
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*/
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#ifndef __IPCDEFS_H__
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#define __IPCDEFS_H__
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#include <l4/api/ipc.h>
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/* SHMID used betweeen FS0 and BLKDEV0 servers */
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#define FS_BLKDEV_SHMID 0
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/*** IPC Tags used between server tasks ***/
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/* For ping ponging */
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#define L4_IPC_TAG_WAIT 3
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/* To negotiate a shared memory mapping */
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#define L4_IPC_TAG_SHM 4
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/* To negotiate a grant mapping */
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#define L4_IPC_TAG_GRANT 5
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/* Posix system call tags */
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#define L4_IPC_TAG_SHMGET 6
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#define L4_IPC_TAG_SHMAT 7
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#define L4_IPC_TAG_SHMDT 8
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#define L4_IPC_TAG_MMAP 9
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#define L4_IPC_TAG_MUNMAP 10
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#define L4_IPC_TAG_MSYNC 11
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#define L4_IPC_TAG_OPEN 12
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#define L4_IPC_TAG_READ 13
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#define L4_IPC_TAG_WRITE 14
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#define L4_IPC_TAG_LSEEK 15
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#define L4_IPC_TAG_CLOSE 16
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#define L4_IPC_TAG_BRK 17
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#define L4_IPC_TAG_READDIR 18
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#define L4_IPC_TAG_MKDIR 19
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#define L4_IPC_TAG_MMAP2 20
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#define L4_IPC_TAG_CHDIR 21
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/* Tags for ipc between fs0 and mm0 */
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#define L4_IPC_TAG_TASKDATA 25
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#define L4_IPC_TAG_PAGER_OPEN 26 /* vfs sends the pager open file data. */
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#define L4_IPC_TAG_PAGER_READ 27 /* Pager reads file contents from vfs */
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#define L4_IPC_TAG_PAGER_WRITE 28 /* Pager writes file contents to vfs */
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#endif /* __IPCDEFS_H__ */
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