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Loader: Implement NSO Extent calculation (note: ASLR currently disabled due to lack of entropy source.)

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This commit is contained in:
Michael Scire 2018-04-24 04:41:29 -06:00
parent 6afd59d2a2
commit b11c2fe755
3 changed files with 103 additions and 1 deletions
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12
stratosphere/loader/source/ldr_process_creation.cpp
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@ -89,6 +89,7 @@ Result ProcessCreation::InitializeProcessInfo(NpdmUtils::NpdmInfo *npdm, Handle
Result ProcessCreation::CreateProcess(Handle *out_process_h, u64 index, char *nca_path, LaunchQueue::LaunchItem *launch_item, u64 arg_flags, Handle reslimit_h) {
NpdmUtils::NpdmInfo npdm_info = {0};
ProcessInfo process_info = {0};
NsoUtils::NsoLoadExtents nso_extents = {0};
Registration::Process *target_process;
Handle process_h = 0;
Result rc;
@ -141,7 +142,16 @@ Result ProcessCreation::CreateProcess(Handle *out_process_h, u64 index, char *nc
goto CREATE_PROCESS_END;
}
/* TODO: Figure out where NSOs will be mapped, and how much space they (and arguments) will take up. */
/* Figure out where NSOs will be mapped, and how much space they (and arguments) will take up. */
rc = NsoUtils::CalculateNsoLoadExtents(launch_item != NULL ? launch_item->arg_size : 0, process_info.process_flags, &nso_extents);
if (R_FAILED(rc)) {
goto CREATE_PROCESS_END;
}
/* Set Address Space information in ProcessInfo. */
process_info.code_addr = nso_extents.base_address;
process_info.code_num_pages = nso_extents.total_size + 0xFFF;
process_info.code_num_pages >>= 12;
/* Call svcCreateProcess(). */
rc = svcCreateProcess(&process_h, &process_info, (u32 *)npdm_info.aci0_kac, npdm_info.aci0->kac_size/sizeof(u32));