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[Zion] Add a AddressSpaceUnmap syscall to free memory.

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This commit is contained in:
Drew Galbraith 2023-11-19 18:55:44 -08:00
parent e668428d9d
commit 30b6511467
9 changed files with 60 additions and 18 deletions
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13
zion/syscall/address_space.cpp
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@ -15,10 +15,19 @@ z_err_t AddressSpaceMap(ZAddressSpaceMapReq* req) {
// FIXME: Validation necessary.
if (req->vmas_offset != 0) {
vmas->MapInMemoryObject(req->vmas_offset, vmmo);
RET_ERR(vmas->MapInMemoryObject(req->vmas_offset, vmmo));
*req->vaddr = req->vmas_offset;
} else {
*req->vaddr = vmas->MapInMemoryObject(vmmo);
ASSIGN_OR_RETURN(*req->vaddr, vmas->MapInMemoryObject(vmmo));
}
return glcr::OK;
}
z_err_t AddressSpaceUnmap(ZAddressSpaceUnmapReq* req) {
auto& curr_proc = gScheduler->CurrentProcess();
auto vmas_cap = curr_proc.GetCapability(req->vmas_cap);
RET_ERR(ValidateCapability<AddressSpace>(vmas_cap, kZionPerm_Write));
auto vmas = vmas_cap->obj<AddressSpace>();
return vmas->FreeAddressRange(req->lower_addr, req->upper_addr);
}

1
zion/syscall/address_space.h
View file

@ -3,3 +3,4 @@
#include "include/zcall.h"
z_err_t AddressSpaceMap(ZAddressSpaceMapReq* req);
z_err_t AddressSpaceUnmap(ZAddressSpaceUnmapReq* req);

1
zion/syscall/syscall.cpp
View file

@ -60,6 +60,7 @@ extern "C" z_err_t SyscallHandler(uint64_t call_id, void* req) {
CASE(ThreadWait);
// syscall/address_space.h
CASE(AddressSpaceMap);
CASE(AddressSpaceUnmap);
// syscall/memory_object.h
CASE(MemoryObjectCreate);
CASE(MemoryObjectCreatePhysical);