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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /kernel/trunk/generic/src/mm/as.c @ 1287

  → /kernel/trunk/generic/src/mm/as.c @ 1288

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 1287 → Rev 1288

/kernel/trunk/generic/src/mm/as.c
57,6 → 57,7
#include <adt/list.h>
#include <adt/btree.h>
#include <proc/task.h>
#include <proc/thread.h>
#include <arch/asm.h>
#include <panic.h>
#include <debug.h>
68,6 → 69,8
#include <config.h>
#include <arch/types.h>
#include <typedefs.h>
#include <syscall/copy.h>
#include <arch/interrupt.h>
as_operations_t *as_operations = NULL;
477,10 → 480,11
* Interrupts are assumed disabled.
*
* @param page Faulting page.
* @param istate Pointer to interrupted state.
*
* @return 0 on page fault, 1 on success.
* @return 0 on page fault, 1 on success or 2 if the fault was caused by copy_to_uspace() or copy_from_uspace().
*/
int as_page_fault(__address page)
int as_page_fault(__address page, istate_t *istate)
{
pte_t *pte;
as_area_t *area;
496,7 → 500,7
* Signal page fault to low-level handler.
*/
spinlock_unlock(&AS->lock);
return 0;
goto page_fault;
}
if (area->attributes & AS_AREA_ATTR_PARTIAL) {
506,7 → 510,7
*/
spinlock_unlock(&area->lock);
spinlock_unlock(&AS->lock);
return 0;
goto page_fault;
}
ASSERT(!(area->flags & AS_AREA_DEVICE));
554,7 → 558,23
spinlock_unlock(&area->lock);
spinlock_unlock(&AS->lock);
return 1;
return AS_PF_OK;
page_fault:
if (!THREAD)
return AS_PF_FAULT;
if (THREAD->in_copy_from_uspace) {
THREAD->in_copy_from_uspace = false;
istate_set_retaddr(istate, (__address) &memcpy_from_uspace_failover_address);
} else if (THREAD->in_copy_to_uspace) {
THREAD->in_copy_to_uspace = false;
istate_set_retaddr(istate, (__address) &memcpy_to_uspace_failover_address);
} else {
return AS_PF_FAULT;
}
return AS_PF_DEFER;
}
/** Switch address spaces.
884,8 → 904,11
__native sys_as_area_accept(as_area_acptsnd_arg_t *uspace_accept_arg)
{
as_area_acptsnd_arg_t arg;
int rc;
copy_from_uspace(&arg, uspace_accept_arg, sizeof(as_area_acptsnd_arg_t));
rc = copy_from_uspace(&arg, uspace_accept_arg, sizeof(as_area_acptsnd_arg_t));
if (rc != 0)
return rc;
if (!arg.size)
return (__native) EPERM;
906,8 → 929,11
__native sys_as_area_send(as_area_acptsnd_arg_t *uspace_send_arg)
{
as_area_acptsnd_arg_t arg;
int rc;
copy_from_uspace(&arg, uspace_send_arg, sizeof(as_area_acptsnd_arg_t));
rc = copy_from_uspace(&arg, uspace_send_arg, sizeof(as_area_acptsnd_arg_t));
if (rc != 0)
return rc;
if (!arg.size)
return (__native) EPERM;