sambuc/codezero
1
0
Fork 0
mirror of https://github.com/drasko/codezero.git synced 2026-02-17 20:33:14 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Various changes to incorporate new utcb setup.

Browse Source 
Issues with l4_return value not reaching client side
	modified:   libs/c/include/stdio.h
	modified:   src/arch/arm/exception.c
	modified:   src/glue/arm/init.c
	modified:   tasks/fs0/src/task.c
	modified:   tasks/libl4/include/l4lib/arch-arm/utcb.h
	modified:   tasks/libl4/src/arm/syscalls.S
	modified:   tasks/libl4/src/init.c
	deleted:    tasks/libl4/tagfilelist
	modified:   tasks/libposix/open.c
	modified:   tasks/mm0/include/utcb.h
	modified:   tasks/mm0/include/vm_area.h
	modified:   tasks/mm0/main.c
	modified:   tasks/mm0/src/init.c
	modified:   tasks/mm0/src/task.c
	modified:   tasks/mm0/src/utcb.c
	modified:   tasks/mm0/src/vm_object.c
This commit is contained in:
Bahadir Balban
2008-03-19 02:27:53 +00:00
parent ac3935a5d9
commit 16617eed36
16 changed files with 93 additions and 71 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
tasks/mm0/src/utcb.c
View File

@@ -8,6 +8,9 @@
#include <utcb.h>
#include <lib/addr.h>
#include <l4/macros.h>
#include <l4lib/arch/syscalls.h>
#include <l4lib/arch/syslib.h>
#include <task.h>
#include INC_GLUE(memlayout.h)
static struct address_pool utcb_vaddr_pool;
@@ -29,4 +32,45 @@ void *utcb_vaddr_new(void)
return address_new(&utcb_vaddr_pool, 1);
}
/*
* Sends utcb address information to requester task, allocates
* an address if it doesn't exist and the requester is asking
* for its own.
*/
int task_send_utcb_address(l4id_t sender, l4id_t taskid)
{
struct tcb *task = find_task(taskid);
/* Is the task asking for its own utcb address */
if (sender == taskid) {
/*
* It hasn't got one allocated. We allocate one here,
* but only because the requester is requesting for its
* own utcb.
*/
if (!task->utcb_address)
task->utcb_address = (unsigned long)utcb_vaddr_new();
/* Return it to requester */
printf("%s: Returning 0x%x\n", __FUNCTION__, task->utcb_address);
return l4_ipc_return(task->utcb_address);
/* A task is asking for someone else's utcb */
} else {
/* Only vfs is allowed to do so yet, because its a server */
if (sender == VFS_TID) {
/*
* Return utcb address to requester. Note if there's
* none allocated so far, requester gets 0. We don't
* allocate one here.
*/
printf("%s: Returning 0x%x\n", __FUNCTION__,
task->utcb_address);
return l4_ipc_return(task->utcb_address);
}
}
return 0;
}