45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
#include "syscall/memory_object.h"
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#include "boot/acpi.h"
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#include "memory/physical_memory.h"
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#include "scheduler/scheduler.h"
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z_err_t MemoryObjectCreate(ZMemoryObjectCreateReq* req) {
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auto& curr_proc = gScheduler->CurrentProcess();
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*req->vmmo_cap = curr_proc.AddNewCapability(
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glcr::MakeRefCounted<MemoryObject>(req->size), ZC_WRITE);
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return glcr::OK;
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}
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z_err_t MemoryObjectCreatePhysical(ZMemoryObjectCreatePhysicalReq* req) {
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auto& curr_proc = gScheduler->CurrentProcess();
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uint64_t paddr = req->paddr;
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auto vmmo_ref = glcr::MakeRefCounted<FixedMemoryObject>(paddr, req->size);
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*req->vmmo_cap = curr_proc.AddNewCapability(
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StaticCastRefPtr<MemoryObject>(vmmo_ref), ZC_WRITE);
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return glcr::OK;
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}
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z_err_t MemoryObjectCreateContiguous(ZMemoryObjectCreateContiguousReq* req) {
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auto& curr_proc = gScheduler->CurrentProcess();
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uint64_t paddr = phys_mem::AllocateContinuous(((req->size - 1) / 0x1000) + 1);
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auto vmmo_ref = glcr::MakeRefCounted<FixedMemoryObject>(paddr, req->size);
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*req->vmmo_cap = curr_proc.AddNewCapability(
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StaticCastRefPtr<MemoryObject>(vmmo_ref), ZC_WRITE);
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*req->paddr = paddr;
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return glcr::OK;
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}
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z_err_t MemoryObjectDuplicate(ZMemoryObjectDuplicateReq* req) {
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auto& curr_proc = gScheduler->CurrentProcess();
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auto vmmo_cap = curr_proc.GetCapability(req->vmmo_cap);
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// FIXME: Check a duplication permission here.
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RET_ERR(ValidateCapability<MemoryObject>(vmmo_cap, ZC_WRITE));
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ASSIGN_OR_RETURN(
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glcr::RefPtr<MemoryObject> new_vmmo,
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vmmo_cap->obj<MemoryObject>()->Duplicate(req->base_offset, req->length));
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*req->new_vmmo_cap = curr_proc.AddNewCapability(new_vmmo, ZC_WRITE | ZC_READ);
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return glcr::OK;
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}
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