398 lines
13 KiB
C
398 lines
13 KiB
C
#include <3ds.h>
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#include "memory.h"
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#include "patcher.h"
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#include "ifile.h"
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#include "util.h"
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#include "hbldr.h"
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extern u32 config, multiConfig, bootConfig;
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extern bool isN3DS, needToInitSd, isSdMode;
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static u8 g_ret_buf[sizeof(ExHeader_Info)];
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static u64 g_cached_programHandle;
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static ExHeader_Info g_exheaderInfo;
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const char CODE_PATH[] = {0x01, 0x00, 0x00, 0x00, 0x2E, 0x63, 0x6F, 0x64, 0x65, 0x00, 0x00, 0x00};
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typedef struct prog_addrs_t
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{
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u32 text_addr;
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u32 text_size;
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u32 ro_addr;
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u32 ro_size;
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u32 data_addr;
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u32 data_size;
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u32 total_size;
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} prog_addrs_t;
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static int lzss_decompress(u8 *end)
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{
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unsigned int v1; // r1@2
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u8 *v2; // r2@2
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u8 *v3; // r3@2
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u8 *v4; // r1@2
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char v5; // r5@4
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char v6; // t1@4
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signed int v7; // r6@4
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int v9; // t1@7
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u8 *v11; // r3@8
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int v12; // r12@8
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int v13; // t1@8
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int v14; // t1@8
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unsigned int v15; // r7@8
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int v16; // r12@8
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int ret;
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ret = 0;
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if ( end )
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{
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v1 = *((u32 *)end - 2);
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v2 = &end[*((u32 *)end - 1)];
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v3 = &end[-(v1 >> 24)];
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v4 = &end[-(v1 & 0xFFFFFF)];
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while ( v3 > v4 )
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{
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v6 = *(v3-- - 1);
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v5 = v6;
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v7 = 8;
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while ( 1 )
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{
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if ( (v7-- < 1) )
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break;
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if ( v5 & 0x80 )
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{
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v13 = *(v3 - 1);
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v11 = v3 - 1;
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v12 = v13;
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v14 = *(v11 - 1);
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v3 = v11 - 1;
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v15 = ((v14 | (v12 << 8)) & 0xFFFF0FFF) + 2;
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v16 = v12 + 32;
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do
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{
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ret = v2[v15];
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*(v2-- - 1) = ret;
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v16 -= 16;
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}
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while ( !(v16 < 0) );
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}
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else
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{
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v9 = *(v3-- - 1);
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ret = v9;
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*(v2-- - 1) = v9;
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}
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v5 *= 2;
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if ( v3 <= v4 )
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return ret;
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}
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}
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}
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return ret;
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}
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static Result allocateSharedMem(prog_addrs_t *shared, prog_addrs_t *vaddr, int flags)
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{
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u32 dummy;
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memcpy(shared, vaddr, sizeof(prog_addrs_t));
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shared->text_addr = 0x10000000;
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shared->ro_addr = shared->text_addr + (shared->text_size << 12);
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shared->data_addr = shared->ro_addr + (shared->ro_size << 12);
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return svcControlMemory(&dummy, shared->text_addr, 0, shared->total_size << 12, (flags & 0xF00) | MEMOP_ALLOC, MEMPERM_READ | MEMPERM_WRITE);
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}
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static Result loadCode(u64 titleId, prog_addrs_t *shared, u64 programHandle, int isCompressed)
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{
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IFile file;
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FS_Path archivePath;
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FS_Path filePath;
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u64 size;
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u64 total;
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if(!CONFIG(PATCHGAMES) || !loadTitleCodeSection(titleId, (u8 *)shared->text_addr, (u64)shared->total_size << 12))
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{
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archivePath.type = PATH_BINARY;
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archivePath.data = &programHandle;
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archivePath.size = 8;
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filePath.type = PATH_BINARY;
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filePath.data = CODE_PATH;
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filePath.size = sizeof(CODE_PATH);
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if (R_FAILED(IFile_Open(&file, ARCHIVE_SAVEDATA_AND_CONTENT2, archivePath, filePath, FS_OPEN_READ)))
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svcBreak(USERBREAK_ASSERT);
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// get file size
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assertSuccess(IFile_GetSize(&file, &size));
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// check size
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if (size > (u64)shared->total_size << 12)
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{
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IFile_Close(&file);
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return 0xC900464F;
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}
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// read code
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assertSuccess(IFile_Read(&file, &total, (void *)shared->text_addr, size));
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IFile_Close(&file); // done reading
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// decompress
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if (isCompressed)
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lzss_decompress((u8 *)shared->text_addr + size);
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}
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ExHeader_CodeSetInfo *csi = &g_exheaderInfo.sci.codeset_info;
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patchCode(titleId, csi->flags.remaster_version, (u8 *)shared->text_addr, shared->total_size << 12, csi->text.size, csi->rodata.size, csi->data.size, csi->rodata.address, csi->data.address);
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return 0;
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}
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static Result GetProgramInfo(ExHeader_Info *exheaderInfo, u64 programHandle)
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{
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Result res = 0;
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if (programHandle >> 32 == 0xFFFF0000)
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res = FSREG_GetProgramInfo(exheaderInfo, 1, programHandle);
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else
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{
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res = FSREG_CheckHostLoadId(programHandle);
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//if ((res >= 0 && (unsigned)res >> 27) || (res < 0 && ((unsigned)res >> 27)-32))
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//so use PXIPM if FSREG fails OR returns "info", is the second condition a bug?
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if (R_FAILED(res) || (R_SUCCEEDED(res) && R_LEVEL(res) != RL_SUCCESS))
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{
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TRY(PXIPM_GetProgramInfo(exheaderInfo, programHandle));
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}
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else
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{
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TRY(FSREG_GetProgramInfo(exheaderInfo, 1, programHandle));
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}
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}
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s64 nbSection0Modules;
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svcGetSystemInfo(&nbSection0Modules, 26, 0);
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// Force always having sdmc:/ and nand:/rw permission
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exheaderInfo->aci.local_caps.storage_info.fs_access_info |= FSACCESS_NANDRW | FSACCESS_SDMC_RW;
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// Tweak 3dsx placeholder title exheaderInfo
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if (nbSection0Modules == 6 && exheaderInfo->aci.local_caps.title_id == HBLDR_3DSX_TID)
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{
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assertSuccess(hbldrInit());
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HBLDR_PatchExHeaderInfo(exheaderInfo);
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hbldrExit();
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}
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u64 originaltitleId = exheaderInfo->aci.local_caps.title_id;
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if(CONFIG(PATCHGAMES) && loadTitleExheaderInfo(exheaderInfo->aci.local_caps.title_id, exheaderInfo))
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exheaderInfo->aci.local_caps.title_id = originaltitleId;
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return res;
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}
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static Result LoadProcess(Handle *process, u64 programHandle)
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{
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Result res;
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int count;
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u32 flags;
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u32 desc;
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u32 dummy;
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prog_addrs_t sharedAddr;
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prog_addrs_t vaddr;
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Handle codeset;
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CodeSetInfo codesetinfo;
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u32 dataMemSize;
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u64 titleId;
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// make sure the cached info corrosponds to the current programHandle
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if (g_cached_programHandle != programHandle || g_exheaderInfo.aci.local_caps.title_id == HBLDR_3DSX_TID)
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{
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res = GetProgramInfo(&g_exheaderInfo, programHandle);
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g_cached_programHandle = programHandle;
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if (R_FAILED(res))
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{
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g_cached_programHandle = 0;
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return res;
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}
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}
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// get kernel flags
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flags = 0;
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for (count = 0; count < 28; count++)
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{
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desc = g_exheaderInfo.aci.kernel_caps.descriptors[count];
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if (0x1FE == desc >> 23)
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flags = desc & 0xF00;
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}
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if (flags == 0)
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return MAKERESULT(RL_PERMANENT, RS_INVALIDARG, 1, 2);
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// check for 3dsx process
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titleId = g_exheaderInfo.aci.local_caps.title_id;
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ExHeader_CodeSetInfo *csi = &g_exheaderInfo.sci.codeset_info;
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if (titleId == HBLDR_3DSX_TID)
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{
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assertSuccess(hbldrInit());
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assertSuccess(HBLDR_LoadProcess(&codeset, csi->text.address, flags & 0xF00, titleId, csi->name));
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res = svcCreateProcess(process, codeset, g_exheaderInfo.aci.kernel_caps.descriptors, count);
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svcCloseHandle(codeset);
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hbldrExit();
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return res;
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}
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// allocate process memory
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vaddr.text_addr = csi->text.address;
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vaddr.text_size = (csi->text.size + 4095) >> 12;
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vaddr.ro_addr = csi->rodata.address;
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vaddr.ro_size = (csi->rodata.size + 4095) >> 12;
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vaddr.data_addr = csi->data.address;
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vaddr.data_size = (csi->data.size + 4095) >> 12;
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dataMemSize = (csi->data.size + csi->bss_size + 4095) >> 12;
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vaddr.total_size = vaddr.text_size + vaddr.ro_size + vaddr.data_size;
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TRY(allocateSharedMem(&sharedAddr, &vaddr, flags));
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// load code
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if (R_SUCCEEDED(res = loadCode(titleId, &sharedAddr, programHandle, csi->flags.compress_exefs_code)))
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{
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memcpy(&codesetinfo.name, csi->name, 8);
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codesetinfo.program_id = titleId;
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codesetinfo.text_addr = vaddr.text_addr;
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codesetinfo.text_size = vaddr.text_size;
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codesetinfo.text_size_total = vaddr.text_size;
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codesetinfo.ro_addr = vaddr.ro_addr;
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codesetinfo.ro_size = vaddr.ro_size;
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codesetinfo.ro_size_total = vaddr.ro_size;
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codesetinfo.rw_addr = vaddr.data_addr;
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codesetinfo.rw_size = vaddr.data_size;
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codesetinfo.rw_size_total = dataMemSize;
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res = svcCreateCodeSet(&codeset, &codesetinfo, (void *)sharedAddr.text_addr, (void *)sharedAddr.ro_addr, (void *)sharedAddr.data_addr);
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if (R_SUCCEEDED(res))
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{
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res = svcCreateProcess(process, codeset, g_exheaderInfo.aci.kernel_caps.descriptors, count);
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svcCloseHandle(codeset);
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res = R_SUCCEEDED(res) ? 0 : res;
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}
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}
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svcControlMemory(&dummy, sharedAddr.text_addr, 0, sharedAddr.total_size << 12, MEMOP_FREE, 0);
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return res;
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}
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static Result RegisterProgram(u64 *programHandle, FS_ProgramInfo *title, FS_ProgramInfo *update)
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{
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Result res;
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u64 titleId;
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titleId = title->programId;
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if (titleId >> 32 != 0xFFFF0000)
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{
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res = FSREG_CheckHostLoadId(titleId);
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//if ((res >= 0 && (unsigned)res >> 27) || (res < 0 && ((unsigned)res >> 27)-32))
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if (R_FAILED(res) || (R_SUCCEEDED(res) && R_LEVEL(res) != RL_SUCCESS))
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{
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TRY(PXIPM_RegisterProgram(programHandle, title, update));
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if (*programHandle >> 32 != 0xFFFF0000)
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{
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res = FSREG_CheckHostLoadId(*programHandle);
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//if ((res >= 0 && (unsigned)res >> 27) || (res < 0 && ((unsigned)res >> 27)-32))
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if (R_FAILED(res) || (R_SUCCEEDED(res) && R_LEVEL(res) != RL_SUCCESS))
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{
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return 0;
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}
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}
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panic(0);
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}
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}
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if ((title->mediaType != update->mediaType) || (titleId != update->programId))
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panic(1);
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TRY(FSREG_LoadProgram(programHandle, title));
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if (*programHandle >> 32 == 0xFFFF0000)
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return 0;
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res = FSREG_CheckHostLoadId(*programHandle);
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//if ((res >= 0 && (unsigned)res >> 27) || (res < 0 && ((unsigned)res >> 27)-32))
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if (R_FAILED(res) || (R_SUCCEEDED(res) && R_LEVEL(res) != RL_SUCCESS))
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panic(2);
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return res;
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}
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static Result UnregisterProgram(u64 programHandle)
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{
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Result res;
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if (programHandle >> 32 == 0xFFFF0000)
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return FSREG_UnloadProgram(programHandle);
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else
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{
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res = FSREG_CheckHostLoadId(programHandle);
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//if ((res >= 0 && (unsigned)res >> 27) || (res < 0 && ((unsigned)res >> 27)-32))
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if (R_FAILED(res) || (R_SUCCEEDED(res) && R_LEVEL(res) != RL_SUCCESS))
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return PXIPM_UnregisterProgram(programHandle);
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else
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return FSREG_UnloadProgram(programHandle);
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}
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}
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void loaderHandleCommands(void *ctx)
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{
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(void)ctx;
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FS_ProgramInfo title;
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FS_ProgramInfo update;
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u32* cmdbuf;
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u16 cmdid;
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int res;
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Handle handle;
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u64 programHandle;
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cmdbuf = getThreadCommandBuffer();
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cmdid = cmdbuf[0] >> 16;
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res = 0;
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switch (cmdid)
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{
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case 1: // LoadProcess
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memcpy(&programHandle, &cmdbuf[1], 8);
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handle = 0;
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cmdbuf[1] = LoadProcess(&handle, programHandle);
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cmdbuf[0] = IPC_MakeHeader(1, 1, 2);
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cmdbuf[2] = IPC_Desc_MoveHandles(1);
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cmdbuf[3] = handle;
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break;
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case 2: // RegisterProgram
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memcpy(&title, &cmdbuf[1], sizeof(FS_ProgramInfo));
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memcpy(&update, &cmdbuf[5], sizeof(FS_ProgramInfo));
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cmdbuf[1] = RegisterProgram(&programHandle, &title, &update);
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cmdbuf[0] = IPC_MakeHeader(2, 3, 0);
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memcpy(&cmdbuf[2], &programHandle, 8);
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break;
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case 3: // UnregisterProgram
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memcpy(&programHandle, &cmdbuf[1], 8);
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if (g_cached_programHandle == programHandle)
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g_cached_programHandle = 0;
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cmdbuf[1] = UnregisterProgram(programHandle);
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cmdbuf[0] = IPC_MakeHeader(3, 1, 0);
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break;
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case 4: // GetProgramInfo
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memcpy(&programHandle, &cmdbuf[1], 8);
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if (programHandle != g_cached_programHandle || g_exheaderInfo.aci.local_caps.title_id == HBLDR_3DSX_TID)
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{
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res = GetProgramInfo(&g_exheaderInfo, programHandle);
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g_cached_programHandle = R_SUCCEEDED(res) ? programHandle : 0;
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}
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memcpy(&g_ret_buf, &g_exheaderInfo, sizeof(ExHeader_Info));
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cmdbuf[0] = IPC_MakeHeader(4, 1, 2);
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cmdbuf[1] = res;
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cmdbuf[2] = IPC_Desc_StaticBuffer(sizeof(ExHeader_Info), 0); //0x1000002;
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cmdbuf[3] = (u32)&g_ret_buf;
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break;
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default: // error
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cmdbuf[0] = IPC_MakeHeader(0, 1, 0);
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cmdbuf[1] = 0xD900182F;
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break;
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}
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}
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