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#include <apos/dev.h>
#include <apos/uapi.h>
#include <apos/utils.h>
#include <apos/vmem.h>
vm_t sys_req_mem(vm_t size, vm_t flags, vm_t u0, vm_t u1)
{
UNUSED(u0); UNUSED(u1);
/* proc_tcb should give the tcb of the TID currently running */
struct tcb *r = cur_tcb();
return alloc_uvmem(r, size, flags);
}
vm_t sys_req_fixmem(vm_t start, vm_t size, vm_t flags, vm_t u0)
{
UNUSED(u0);
struct tcb *r = cur_tcb();
return alloc_fixed_uvmem(r, start, size, flags);
}
vm_t sys_free_mem(vm_t start, vm_t u0, vm_t u1, vm_t u2)
{
UNUSED(u0); UNUSED(u1); UNUSED(u2);
struct tcb *r = cur_tcb();
if(start > __pre_top && start < __post_base)
free_uvmem(r, start);
else
free_devmem(r, start);
return 0;
}
vm_t sys_req_pmem(vm_t paddr, vm_t size, vm_t flags, vm_t u0)
{
UNUSED(u0);
/* this will require some pondering, but essentially this syscall should
* only be used for device access, so any addresses requested should be
* outside the RAM area, and I'll probably have to implement some method
* that keeps track of used regions outside of RAM. We'll see.
*/
struct tcb *r = cur_tcb();
return alloc_devmem(r, paddr, size, flags);
}
vm_t sys_req_sharedmem(vm_t pid, vm_t start, vm_t size, vm_t flags)
{
/* take memory in PID's vaddr and map it somewhere in our own memory
* region.
*/
return 0;
}
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