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kern: pass ini1 size from loader to kernel, remove slab memset from init0

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Michael Scire 2023-10-11 02:02:49 -07:00 • committed by SciresM
parent add4b3fdc3
commit 4ca3c44e5f
6 changed files with 62 additions and 31 deletions
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32
mesosphere/kernel_ldr/source/kern_init_loader.cpp
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@ -45,7 +45,7 @@ namespace ams::kern::init::loader {
constinit KInitialPageAllocator g_initial_page_allocator;
constinit KInitialPageAllocator::State g_final_page_allocator_state;
constinit InitialProcessBinaryLayout g_initial_process_binary_layout;
constinit InitialProcessBinaryLayoutWithSize g_initial_process_binary_meta;
constinit void *g_final_state[2];
@ -165,19 +165,31 @@ namespace ams::kern::init::loader {
const uintptr_t resource_end_address = base_address + resource_offset + resource_region_size;
/* Setup the INI1 header in memory for the kernel. */
KSystemControl::Init::GetInitialProcessBinaryLayout(std::addressof(g_initial_process_binary_layout));
MESOSPHERE_INIT_ABORT_UNLESS(g_initial_process_binary_layout.address != 0);
{
/* Get the kernel layout. */
KSystemControl::Init::GetInitialProcessBinaryLayout(std::addressof(g_initial_process_binary_meta.layout));
if (ini_base_address != g_initial_process_binary_layout.address) {
/* The INI is not at the correct address, so we need to relocate it. */
/* If there's no desired base address, use the ini in place. */
if (g_initial_process_binary_meta.layout.address == 0) {
g_initial_process_binary_meta.layout.address = ini_base_address;
}
/* Validate and potentially relocate the INI. */
const InitialProcessBinaryHeader *ini_header = reinterpret_cast<const InitialProcessBinaryHeader *>(ini_base_address);
if (ini_header->magic == InitialProcessBinaryMagic && ini_header->size <= InitialProcessBinarySizeMax) {
/* INI is valid, relocate it. */
std::memmove(reinterpret_cast<void *>(g_initial_process_binary_layout.address), ini_header, ini_header->size);
size_t ini_size = 0;
if (ini_header->magic == InitialProcessBinaryMagic && (ini_size = ini_header->size) <= InitialProcessBinarySizeMax) {
/* INI is valid, relocate it if necessary. */
if (ini_base_address != g_initial_process_binary_meta.layout.address) {
std::memmove(reinterpret_cast<void *>(g_initial_process_binary_meta.layout.address), ini_header, ini_size);
}
} else {
/* INI is invalid. Make the destination header invalid. */
std::memset(reinterpret_cast<void *>(g_initial_process_binary_layout.address), 0, sizeof(InitialProcessBinaryHeader));
std::memset(reinterpret_cast<void *>(g_initial_process_binary_meta.layout.address), 0, sizeof(InitialProcessBinaryHeader));
}
/* Set the INI size in layout. */
g_initial_process_binary_meta.size = util::AlignUp(ini_size, PageSize);
}
/* We want to start allocating page tables at the end of the resource region. */
@ -238,7 +250,7 @@ namespace ams::kern::init::loader {
/* Setup final kernel loader state. */
g_final_state[0] = std::addressof(g_final_page_allocator_state);
g_final_state[1] = std::addressof(g_initial_process_binary_layout);
g_final_state[1] = std::addressof(g_initial_process_binary_meta);
return g_final_state;
}