mirrors/Atmosphere
0
0
Fork 0
mirror of https://github.com/Atmosphere-NX/Atmosphere.git synced 2025-08-09 09:38:52 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

kern: implement SetProcessMemoryPermission

Browse source
This commit is contained in:
Michael Scire 2020-02-19 08:07:44 -08:00
commit 28ea0b12a8
9 changed files with 317 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

28
libraries/libmesosphere/source/kern_k_initial_process_reader.cpp
View file

@ -188,4 +188,32 @@ namespace ams::kern {
return ResultSuccess();
}
Result KInitialProcessReader::SetMemoryPermissions(KProcessPageTable &page_table, const ams::svc::CreateProcessParameter &params) const {
const size_t rx_size = this->kip_header->GetRxSize();
const size_t ro_size = this->kip_header->GetRoSize();
const size_t rw_size = this->kip_header->GetRwSize();
const size_t bss_size = this->kip_header->GetBssSize();
/* Set R-X pages. */
if (rx_size) {
const uintptr_t start = this->kip_header->GetRxAddress() + params.code_address;
R_TRY(page_table.SetProcessMemoryPermission(start, util::AlignUp(rx_size, PageSize), ams::svc::MemoryPermission_ReadExecute));
}
/* Set R-- pages. */
if (ro_size) {
const uintptr_t start = this->kip_header->GetRoAddress() + params.code_address;
R_TRY(page_table.SetProcessMemoryPermission(start, util::AlignUp(ro_size, PageSize), ams::svc::MemoryPermission_Read));
}
/* Set RW- pages. */
if (rw_size || bss_size) {
const uintptr_t start = (rw_size ? this->kip_header->GetRwAddress() : this->kip_header->GetBssAddress()) + params.code_address;
const uintptr_t end = (bss_size ? this->kip_header->GetBssAddress() + bss_size : this->kip_header->GetRwAddress() + rw_size) + params.code_address;
R_TRY(page_table.SetProcessMemoryPermission(start, util::AlignUp(end - start, PageSize), ams::svc::MemoryPermission_ReadWrite));
}
return ResultSuccess();
}
}