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Added kernel + libl4 changes for full and extended ipc.

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- Short ipc working as normal. Full/extended ipc haven't been tested.
- Added automated compilation and inclusion of test executable in test0.
This commit is contained in:
Bahadir Balban
2009-05-15 19:14:40 +03:00
parent 814eba43dd
commit 93368447f9
21 changed files with 289 additions and 49 deletions
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23
src/generic/space.c
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@@ -151,7 +151,7 @@ struct address_space *address_space_create(struct address_space *orig)
* If its not mapped-in, it generates a page-in request to the thread's
* pager. If fault hasn't cleared, aborts.
*/
int check_access(unsigned long vaddr, unsigned long size, unsigned int flags)
int check_access(unsigned long vaddr, unsigned long size, unsigned int flags, int page_in)
{
int err;
@@ -159,20 +159,17 @@ int check_access(unsigned long vaddr, unsigned long size, unsigned int flags)
if (size >= USER_AREA_SIZE)
return -EINVAL;
/* Check if in user range, but this is more up to the pager to decide */
if (current->tid == PAGER_TID) {
if (!(vaddr >= INITTASK_AREA_START && vaddr < INITTASK_AREA_END))
return -EINVAL;
} else {
if (!(vaddr >= USER_AREA_START && vaddr < USER_AREA_END))
return -EINVAL;
/* Check if the address is mapped with given flags */
if (!check_mapping(vaddr, size, flags)) {
/* Is a page in requested? */
if (page_in) {
/* Ask pager if paging in is possible */
if((err = pager_pagein_request(vaddr, size, flags)) < 0)
return err;
} else
return -EFAULT;
}
/* If not mapped, ask pager whether this is possible */
if (!check_mapping(vaddr, size, flags))
if((err = pager_pagein_request(vaddr, size, flags)) < 0)
return err;
return 0;
}