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Merge PR 7420

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citrabot 2024-03-04 00:25:34 +00:00
parent 0ebc2068a0
commit a37426f23d
1 changed files with 135 additions and 59 deletions
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194
src/core/loader/3dsx.cpp
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@ -4,7 +4,9 @@
#include <algorithm>
#include <vector>
#include "common/literals.h"
#include "common/logging/log.h"
#include "common/settings.h"
#include "core/core.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/resource_limit.h"
@ -36,16 +38,21 @@ namespace Loader {
* The BSS section must be cleared manually by the application.
*/
enum THREEDSX_Error { ERROR_NONE = 0, ERROR_READ = 1, ERROR_FILE = 2, ERROR_ALLOC = 3 };
enum class THREEDSX_Error : u32 {
None = 0,
Read = 1,
File = 2,
Alloc = 3,
};
static const u32 RELOCBUFSIZE = 512;
static const unsigned int NUM_SEGMENTS = 3;
static constexpr u32 MAX_RELOCATIONS = 512;
static constexpr u32 NUM_SEGMENTS = 3;
// File header
#pragma pack(1)
struct THREEDSX_Header {
u32 magic;
u16 header_size, reloc_hdr_size;
u16 header_size;
u16 reloc_hdr_size;
u32 format_ver;
u32 flags;
@ -57,6 +64,7 @@ struct THREEDSX_Header {
// offset to filesystem
u32 fs_offset;
};
static_assert(sizeof(THREEDSX_Header) == 44);
// Relocation header: all fields (even extra unknown fields) are guaranteed to be relocation counts.
struct THREEDSX_RelocHdr {
@ -71,12 +79,25 @@ struct THREEDSX_RelocHdr {
// - Absolute relocations
// - Relative relocations
};
static_assert(sizeof(THREEDSX_RelocHdr) == 8);
// Relocation entry: from the current pointer, skip X words and patch Y words
struct THREEDSX_Reloc {
u16 skip, patch;
u16 skip;
u16 patch;
};
#pragma pack()
static_assert(sizeof(THREEDSX_Reloc) == 4);
struct PrmStruct {
u32 magic;
VAddr srv_override;
u32 apt_app_id;
u32 heap_size;
u32 linear_heap_size;
VAddr arg_list;
u32 run_flags;
};
static_assert(sizeof(PrmStruct) == 28);
struct THREEloadinfo {
u8* seg_ptrs[3]; // code, rodata & data
@ -84,7 +105,7 @@ struct THREEloadinfo {
u32 seg_sizes[3];
};
static u32 TranslateAddr(u32 addr, const THREEloadinfo* loadinfo, u32* offsets) {
static u32 TranslateAddr(u32 addr, const THREEloadinfo* loadinfo, std::span<const u32, 2> offsets) {
if (addr < offsets[0])
return loadinfo->seg_addrs[0] + addr;
if (addr < offsets[1])
@ -93,33 +114,41 @@ static u32 TranslateAddr(u32 addr, const THREEloadinfo* loadinfo, u32* offsets)
}
using Kernel::CodeSet;
using namespace Common::Literals;
static THREEDSX_Error Load3DSXFile(Core::System& system, FileUtil::IOFile& file, u32 base_addr,
std::shared_ptr<CodeSet>* out_codeset) {
if (!file.IsOpen())
return ERROR_FILE;
if (!file.IsOpen()) {
return THREEDSX_Error::File;
}
// Reset read pointer in case this file has been read before.
file.Seek(0, SEEK_SET);
THREEDSX_Header hdr;
if (file.ReadBytes(&hdr, sizeof(hdr)) != sizeof(hdr))
return ERROR_READ;
if (file.ReadBytes(&hdr, sizeof(hdr)) != sizeof(hdr)) {
return THREEDSX_Error::Read;
}
static constexpr size_t PageSize = Memory::CITRA_PAGE_SIZE;
// Loadinfo segments must be a multiple of 0x1000
THREEloadinfo loadinfo;
// loadinfo segments must be a multiple of 0x1000
loadinfo.seg_sizes[0] = (hdr.code_seg_size + 0xFFF) & ~0xFFF;
loadinfo.seg_sizes[1] = (hdr.rodata_seg_size + 0xFFF) & ~0xFFF;
loadinfo.seg_sizes[2] = (hdr.data_seg_size + 0xFFF) & ~0xFFF;
// prevent integer overflow leading to heap-buffer-overflow
loadinfo.seg_sizes[0] = Common::AlignUp(hdr.code_seg_size, PageSize);
loadinfo.seg_sizes[1] = Common::AlignUp(hdr.rodata_seg_size, PageSize);
loadinfo.seg_sizes[2] = Common::AlignUp(hdr.data_seg_size, PageSize);
// Prevent integer overflow leading to heap-buffer-overflow
if (loadinfo.seg_sizes[0] < hdr.code_seg_size || loadinfo.seg_sizes[1] < hdr.rodata_seg_size ||
loadinfo.seg_sizes[2] < hdr.data_seg_size) {
return ERROR_READ;
return THREEDSX_Error::Read;
}
u32 offsets[2] = {loadinfo.seg_sizes[0], loadinfo.seg_sizes[0] + loadinfo.seg_sizes[1]};
u32 n_reloc_tables = hdr.reloc_hdr_size / sizeof(u32);
const u32 n_reloc_tables = hdr.reloc_hdr_size / sizeof(u32);
std::array<u32, 2> offsets = {loadinfo.seg_sizes[0],
loadinfo.seg_sizes[0] + loadinfo.seg_sizes[1]};
std::vector<u8> program_image(loadinfo.seg_sizes[0] + loadinfo.seg_sizes[1] +
loadinfo.seg_sizes[2]);
loadinfo.seg_sizes[2] + PageSize);
loadinfo.seg_addrs[0] = base_addr;
loadinfo.seg_addrs[1] = loadinfo.seg_addrs[0] + loadinfo.seg_sizes[0];
@ -133,27 +162,31 @@ static THREEDSX_Error Load3DSXFile(Core::System& system, FileUtil::IOFile& file,
// Read the relocation headers
std::vector<u32> relocs(n_reloc_tables * NUM_SEGMENTS);
for (unsigned int current_segment = 0; current_segment < NUM_SEGMENTS; ++current_segment) {
std::size_t size = n_reloc_tables * sizeof(u32);
if (file.ReadBytes(&relocs[current_segment * n_reloc_tables], size) != size)
return ERROR_READ;
for (u32 current_segment = 0; current_segment < NUM_SEGMENTS; ++current_segment) {
const std::size_t size = n_reloc_tables * sizeof(u32);
if (file.ReadBytes(&relocs[current_segment * n_reloc_tables], size) != size) {
return THREEDSX_Error::Read;
}
}
// Read the segments
if (file.ReadBytes(loadinfo.seg_ptrs[0], hdr.code_seg_size) != hdr.code_seg_size)
return ERROR_READ;
if (file.ReadBytes(loadinfo.seg_ptrs[1], hdr.rodata_seg_size) != hdr.rodata_seg_size)
return ERROR_READ;
if (file.ReadBytes(loadinfo.seg_ptrs[0], hdr.code_seg_size) != hdr.code_seg_size) {
return THREEDSX_Error::Read;
}
if (file.ReadBytes(loadinfo.seg_ptrs[1], hdr.rodata_seg_size) != hdr.rodata_seg_size) {
return THREEDSX_Error::Read;
}
if (file.ReadBytes(loadinfo.seg_ptrs[2], hdr.data_seg_size - hdr.bss_size) !=
hdr.data_seg_size - hdr.bss_size)
return ERROR_READ;
hdr.data_seg_size - hdr.bss_size) {
return THREEDSX_Error::Read;
}
// BSS clear
std::memset((char*)loadinfo.seg_ptrs[2] + hdr.data_seg_size - hdr.bss_size, 0, hdr.bss_size);
std::memset(loadinfo.seg_ptrs[2] + hdr.data_seg_size - hdr.bss_size, 0, hdr.bss_size);
// Relocate the segments
for (unsigned int current_segment = 0; current_segment < NUM_SEGMENTS; ++current_segment) {
for (unsigned current_segment_reloc_table = 0; current_segment_reloc_table < n_reloc_tables;
for (u32 current_segment = 0; current_segment < NUM_SEGMENTS; ++current_segment) {
for (u32 current_segment_reloc_table = 0; current_segment_reloc_table < n_reloc_tables;
current_segment_reloc_table++) {
u32 n_relocs = relocs[current_segment * n_reloc_tables + current_segment_reloc_table];
if (current_segment_reloc_table >= 2) {
@ -161,21 +194,22 @@ static THREEDSX_Error Load3DSXFile(Core::System& system, FileUtil::IOFile& file,
file.Seek(n_relocs * sizeof(THREEDSX_Reloc), SEEK_CUR);
continue;
}
THREEDSX_Reloc reloc_table[RELOCBUFSIZE];
THREEDSX_Reloc reloc_table[MAX_RELOCATIONS];
u32* pos = (u32*)loadinfo.seg_ptrs[current_segment];
const u32* end_pos = pos + (loadinfo.seg_sizes[current_segment] / 4);
while (n_relocs) {
u32 remaining = std::min(RELOCBUFSIZE, n_relocs);
const u32 remaining = std::min(MAX_RELOCATIONS, n_relocs);
n_relocs -= remaining;
if (file.ReadBytes(reloc_table, remaining * sizeof(THREEDSX_Reloc)) !=
remaining * sizeof(THREEDSX_Reloc))
return ERROR_READ;
remaining * sizeof(THREEDSX_Reloc)) {
return THREEDSX_Error::Read;
}
for (unsigned current_inprogress = 0;
current_inprogress < remaining && pos < end_pos; current_inprogress++) {
for (u32 current_inprogress = 0; current_inprogress < remaining && pos < end_pos;
current_inprogress++) {
const auto& table = reloc_table[current_inprogress];
LOG_TRACE(Loader, "(t={},skip={},patch={})", current_segment_reloc_table,
static_cast<u32>(table.skip), static_cast<u32>(table.patch));
@ -191,13 +225,14 @@ static THREEDSX_Error Load3DSXFile(Core::System& system, FileUtil::IOFile& file,
addr, current_segment_reloc_table, *pos);
switch (current_segment_reloc_table) {
case 0: {
if (sub_type != 0)
return ERROR_READ;
if (sub_type != 0) {
return THREEDSX_Error::Read;
}
*pos = addr;
break;
}
case 1: {
u32 data = addr - in_addr;
const u32 data = addr - in_addr;
switch (sub_type) {
case 0: // 32-bit signed offset
*pos = data;
@ -206,7 +241,7 @@ static THREEDSX_Error Load3DSXFile(Core::System& system, FileUtil::IOFile& file,
*pos = data & ~(1U << 31);
break;
default:
return ERROR_READ;
return THREEDSX_Error::Read;
}
break;
}
@ -221,8 +256,36 @@ static THREEDSX_Error Load3DSXFile(Core::System& system, FileUtil::IOFile& file,
}
}
// Detect and fill _prm structure
PrmStruct pst;
std::memcpy(&pst, program_image.data() + sizeof(u32), sizeof(PrmStruct));
if (pst.magic == MakeMagic('_', 'p', 'r', 'm')) {
static constexpr u32 Argc = 1;
static constexpr std::string_view Argv = "Citra";
// Initialize the argument buffer
const size_t extra_page_offset = program_image.size() - PageSize;
const auto argv_buf = std::span{program_image}.subspan(extra_page_offset, PageSize);
std::memcpy(argv_buf.data(), &Argc, sizeof(Argc));
std::memcpy(argv_buf.data() + sizeof(Argc), Argv.data(), Argv.size());
// Pass the arguments to the application.
static constexpr u32 RUNFLAG_APTREINIT = 1 << 1;
const VAddr extra_page_addr = loadinfo.seg_addrs[2] + loadinfo.seg_sizes[2];
pst.arg_list = extra_page_addr;
pst.run_flags |= RUNFLAG_APTREINIT;
if (Settings::values.is_new_3ds) {
pst.heap_size = u32(48_MiB);
pst.linear_heap_size = u32(64_MiB);
} else {
pst.heap_size = u32(24_MiB);
pst.linear_heap_size = u32(32_MiB);
}
std::memcpy(program_image.data() + sizeof(u32), &pst, sizeof(PrmStruct));
}
// Create the CodeSet
std::shared_ptr<CodeSet> code_set = system.Kernel().CreateCodeSet("", 0);
const auto code_set = system.Kernel().CreateCodeSet("", 0);
code_set->CodeSegment().offset = loadinfo.seg_ptrs[0] - program_image.data();
code_set->CodeSegment().addr = loadinfo.seg_addrs[0];
@ -234,7 +297,7 @@ static THREEDSX_Error Load3DSXFile(Core::System& system, FileUtil::IOFile& file,
code_set->DataSegment().offset = loadinfo.seg_ptrs[2] - program_image.data();
code_set->DataSegment().addr = loadinfo.seg_addrs[2];
code_set->DataSegment().size = loadinfo.seg_sizes[2];
code_set->DataSegment().size = loadinfo.seg_sizes[2] + PageSize;
code_set->entrypoint = code_set->CodeSegment().addr;
code_set->memory = std::move(program_image);
@ -245,31 +308,36 @@ static THREEDSX_Error Load3DSXFile(Core::System& system, FileUtil::IOFile& file,
hdr.bss_size);
*out_codeset = code_set;
return ERROR_NONE;
return THREEDSX_Error::None;
}
FileType AppLoader_THREEDSX::IdentifyType(FileUtil::IOFile& file) {
u32 magic;
file.Seek(0, SEEK_SET);
if (1 != file.ReadArray<u32>(&magic, 1))
if (1 != file.ReadArray<u32>(&magic, 1)) {
return FileType::Error;
}
if (MakeMagic('3', 'D', 'S', 'X') == magic)
if (MakeMagic('3', 'D', 'S', 'X') == magic) {
return FileType::THREEDSX;
}
return FileType::Error;
}
ResultStatus AppLoader_THREEDSX::Load(std::shared_ptr<Kernel::Process>& process) {
if (is_loaded)
if (is_loaded) {
return ResultStatus::ErrorAlreadyLoaded;
}
if (!file.IsOpen())
if (!file.IsOpen()) {
return ResultStatus::Error;
}
std::shared_ptr<CodeSet> codeset;
if (Load3DSXFile(system, file, Memory::PROCESS_IMAGE_VADDR, &codeset) != ERROR_NONE)
if (Load3DSXFile(system, file, Memory::PROCESS_IMAGE_VADDR, &codeset) != THREEDSX_Error::None) {
return ResultStatus::Error;
}
codeset->name = filename;
process = system.Kernel().CreateProcess(std::move(codeset));
@ -292,18 +360,21 @@ ResultStatus AppLoader_THREEDSX::Load(std::shared_ptr<Kernel::Process>& process)
}
ResultStatus AppLoader_THREEDSX::ReadRomFS(std::shared_ptr<FileSys::RomFSReader>& romfs_file) {
if (!file.IsOpen())
if (!file.IsOpen()) {
return ResultStatus::Error;
}
// Reset read pointer in case this file has been read before.
file.Seek(0, SEEK_SET);
THREEDSX_Header hdr;
if (file.ReadBytes(&hdr, sizeof(THREEDSX_Header)) != sizeof(THREEDSX_Header))
if (file.ReadBytes(&hdr, sizeof(THREEDSX_Header)) != sizeof(THREEDSX_Header)) {
return ResultStatus::Error;
}
if (hdr.header_size != sizeof(THREEDSX_Header))
if (hdr.header_size != sizeof(THREEDSX_Header)) {
return ResultStatus::Error;
}
// Check if the 3DSX has a RomFS...
if (hdr.fs_offset != 0) {
@ -323,31 +394,36 @@ ResultStatus AppLoader_THREEDSX::ReadRomFS(std::shared_ptr<FileSys::RomFSReader>
return ResultStatus::Success;
}
LOG_DEBUG(Loader, "3DSX has no RomFS");
return ResultStatus::ErrorNotUsed;
}
ResultStatus AppLoader_THREEDSX::ReadIcon(std::vector<u8>& buffer) {
if (!file.IsOpen())
if (!file.IsOpen()) {
return ResultStatus::Error;
}
// Reset read pointer in case this file has been read before.
file.Seek(0, SEEK_SET);
THREEDSX_Header hdr;
if (file.ReadBytes(&hdr, sizeof(THREEDSX_Header)) != sizeof(THREEDSX_Header))
if (file.ReadBytes(&hdr, sizeof(THREEDSX_Header)) != sizeof(THREEDSX_Header)) {
return ResultStatus::Error;
}
if (hdr.header_size != sizeof(THREEDSX_Header))
if (hdr.header_size != sizeof(THREEDSX_Header)) {
return ResultStatus::Error;
}
// Check if the 3DSX has a SMDH...
if (hdr.smdh_offset != 0) {
file.Seek(hdr.smdh_offset, SEEK_SET);
buffer.resize(hdr.smdh_size);
if (file.ReadBytes(buffer.data(), hdr.smdh_size) != hdr.smdh_size)
if (file.ReadBytes(buffer.data(), hdr.smdh_size) != hdr.smdh_size) {
return ResultStatus::Error;
}
return ResultStatus::Success;
}