/* * TCCPE.C - PE file output for the Tiny C Compiler * * Copyright (c) 2005-2007 grischka * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "tcc.h" #define PE_MERGE_DATA /* #define PE_PRINT_SECTIONS */ #ifndef _WIN32 #define stricmp strcasecmp #define strnicmp strncasecmp #include /* chmod() */ #endif #ifdef TCC_TARGET_X86_64 # define ADDR3264 ULONGLONG # define PE_IMAGE_REL IMAGE_REL_BASED_DIR64 # define REL_TYPE_DIRECT R_X86_64_64 # define R_XXX_THUNKFIX R_X86_64_PC32 # define R_XXX_RELATIVE R_X86_64_RELATIVE # define IMAGE_FILE_MACHINE 0x8664 # define RSRC_RELTYPE 3 #elif defined TCC_TARGET_ARM # define ADDR3264 DWORD # define PE_IMAGE_REL IMAGE_REL_BASED_HIGHLOW # define REL_TYPE_DIRECT R_ARM_ABS32 # define R_XXX_THUNKFIX R_ARM_ABS32 # define R_XXX_RELATIVE R_ARM_RELATIVE # define IMAGE_FILE_MACHINE 0x01C0 # define RSRC_RELTYPE 7 /* ??? (not tested) */ #elif defined TCC_TARGET_I386 # define ADDR3264 DWORD # define PE_IMAGE_REL IMAGE_REL_BASED_HIGHLOW # define REL_TYPE_DIRECT R_386_32 # define R_XXX_THUNKFIX R_386_32 # define R_XXX_RELATIVE R_386_RELATIVE # define IMAGE_FILE_MACHINE 0x014C # define RSRC_RELTYPE 7 /* DIR32NB */ #endif #ifndef IMAGE_NT_SIGNATURE /* ----------------------------------------------------------- */ /* definitions below are from winnt.h */ typedef unsigned char BYTE; typedef unsigned short WORD; typedef unsigned int DWORD; typedef unsigned long long ULONGLONG; #pragma pack(push, 1) typedef struct _IMAGE_DOS_HEADER { /* DOS .EXE header */ WORD e_magic; /* Magic number */ WORD e_cblp; /* Bytes on last page of file */ WORD e_cp; /* Pages in file */ WORD e_crlc; /* Relocations */ WORD e_cparhdr; /* Size of header in paragraphs */ WORD e_minalloc; /* Minimum extra paragraphs needed */ WORD e_maxalloc; /* Maximum extra paragraphs needed */ WORD e_ss; /* Initial (relative) SS value */ WORD e_sp; /* Initial SP value */ WORD e_csum; /* Checksum */ WORD e_ip; /* Initial IP value */ WORD e_cs; /* Initial (relative) CS value */ WORD e_lfarlc; /* File address of relocation table */ WORD e_ovno; /* Overlay number */ WORD e_res[4]; /* Reserved words */ WORD e_oemid; /* OEM identifier (for e_oeminfo) */ WORD e_oeminfo; /* OEM information; e_oemid specific */ WORD e_res2[10]; /* Reserved words */ DWORD e_lfanew; /* File address of new exe header */ } IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER; #define IMAGE_NT_SIGNATURE 0x00004550 /* PE00 */ #define SIZE_OF_NT_SIGNATURE 4 typedef struct _IMAGE_FILE_HEADER { WORD Machine; WORD NumberOfSections; DWORD TimeDateStamp; DWORD PointerToSymbolTable; DWORD NumberOfSymbols; WORD SizeOfOptionalHeader; WORD Characteristics; } IMAGE_FILE_HEADER, *PIMAGE_FILE_HEADER; #define IMAGE_SIZEOF_FILE_HEADER 20 typedef struct _IMAGE_DATA_DIRECTORY { DWORD VirtualAddress; DWORD Size; } IMAGE_DATA_DIRECTORY, *PIMAGE_DATA_DIRECTORY; typedef struct _IMAGE_OPTIONAL_HEADER { /* Standard fields. */ WORD Magic; BYTE MajorLinkerVersion; BYTE MinorLinkerVersion; DWORD SizeOfCode; DWORD SizeOfInitializedData; DWORD SizeOfUninitializedData; DWORD AddressOfEntryPoint; DWORD BaseOfCode; #ifndef TCC_TARGET_X86_64 DWORD BaseOfData; #endif /* NT additional fields. */ ADDR3264 ImageBase; DWORD SectionAlignment; DWORD FileAlignment; WORD MajorOperatingSystemVersion; WORD MinorOperatingSystemVersion; WORD MajorImageVersion; WORD MinorImageVersion; WORD MajorSubsystemVersion; WORD MinorSubsystemVersion; DWORD Win32VersionValue; DWORD SizeOfImage; DWORD SizeOfHeaders; DWORD CheckSum; WORD Subsystem; WORD DllCharacteristics; ADDR3264 SizeOfStackReserve; ADDR3264 SizeOfStackCommit; ADDR3264 SizeOfHeapReserve; ADDR3264 SizeOfHeapCommit; DWORD LoaderFlags; DWORD NumberOfRvaAndSizes; IMAGE_DATA_DIRECTORY DataDirectory[16]; } IMAGE_OPTIONAL_HEADER32, IMAGE_OPTIONAL_HEADER64, IMAGE_OPTIONAL_HEADER; #define IMAGE_DIRECTORY_ENTRY_EXPORT 0 /* Export Directory */ #define IMAGE_DIRECTORY_ENTRY_IMPORT 1 /* Import Directory */ #define IMAGE_DIRECTORY_ENTRY_RESOURCE 2 /* Resource Directory */ #define IMAGE_DIRECTORY_ENTRY_EXCEPTION 3 /* Exception Directory */ #define IMAGE_DIRECTORY_ENTRY_SECURITY 4 /* Security Directory */ #define IMAGE_DIRECTORY_ENTRY_BASERELOC 5 /* Base Relocation Table */ #define IMAGE_DIRECTORY_ENTRY_DEBUG 6 /* Debug Directory */ /* IMAGE_DIRECTORY_ENTRY_COPYRIGHT 7 (X86 usage) */ #define IMAGE_DIRECTORY_ENTRY_ARCHITECTURE 7 /* Architecture Specific Data */ #define IMAGE_DIRECTORY_ENTRY_GLOBALPTR 8 /* RVA of GP */ #define IMAGE_DIRECTORY_ENTRY_TLS 9 /* TLS Directory */ #define IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG 10 /* Load Configuration Directory */ #define IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT 11 /* Bound Import Directory in headers */ #define IMAGE_DIRECTORY_ENTRY_IAT 12 /* Import Address Table */ #define IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT 13 /* Delay Load Import Descriptors */ #define IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR 14 /* COM Runtime descriptor */ /* Section header format. */ #define IMAGE_SIZEOF_SHORT_NAME 8 typedef struct _IMAGE_SECTION_HEADER { BYTE Name[IMAGE_SIZEOF_SHORT_NAME]; union { DWORD PhysicalAddress; DWORD VirtualSize; } Misc; DWORD VirtualAddress; DWORD SizeOfRawData; DWORD PointerToRawData; DWORD PointerToRelocations; DWORD PointerToLinenumbers; WORD NumberOfRelocations; WORD NumberOfLinenumbers; DWORD Characteristics; } IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER; #define IMAGE_SIZEOF_SECTION_HEADER 40 typedef struct _IMAGE_EXPORT_DIRECTORY { DWORD Characteristics; DWORD TimeDateStamp; WORD MajorVersion; WORD MinorVersion; DWORD Name; DWORD Base; DWORD NumberOfFunctions; DWORD NumberOfNames; DWORD AddressOfFunctions; DWORD AddressOfNames; DWORD AddressOfNameOrdinals; } IMAGE_EXPORT_DIRECTORY,*PIMAGE_EXPORT_DIRECTORY; typedef struct _IMAGE_IMPORT_DESCRIPTOR { union { DWORD Characteristics; DWORD OriginalFirstThunk; }; DWORD TimeDateStamp; DWORD ForwarderChain; DWORD Name; DWORD FirstThunk; } IMAGE_IMPORT_DESCRIPTOR; typedef struct _IMAGE_BASE_RELOCATION { DWORD VirtualAddress; DWORD SizeOfBlock; // WORD TypeOffset[1]; } IMAGE_BASE_RELOCATION; #define IMAGE_SIZEOF_BASE_RELOCATION 8 #define IMAGE_REL_BASED_ABSOLUTE 0 #define IMAGE_REL_BASED_HIGH 1 #define IMAGE_REL_BASED_LOW 2 #define IMAGE_REL_BASED_HIGHLOW 3 #define IMAGE_REL_BASED_HIGHADJ 4 #define IMAGE_REL_BASED_MIPS_JMPADDR 5 #define IMAGE_REL_BASED_SECTION 6 #define IMAGE_REL_BASED_REL32 7 #define IMAGE_REL_BASED_DIR64 10 #define IMAGE_SCN_CNT_CODE 0x00000020 #define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040 #define IMAGE_SCN_CNT_UNINITIALIZED_DATA 0x00000080 #define IMAGE_SCN_MEM_DISCARDABLE 0x02000000 #define IMAGE_SCN_MEM_SHARED 0x10000000 #define IMAGE_SCN_MEM_EXECUTE 0x20000000 #define IMAGE_SCN_MEM_READ 0x40000000 #define IMAGE_SCN_MEM_WRITE 0x80000000 #pragma pack(pop) /* ----------------------------------------------------------- */ #endif /* ndef IMAGE_NT_SIGNATURE */ /* ----------------------------------------------------------- */ #ifndef IMAGE_REL_BASED_DIR64 # define IMAGE_REL_BASED_DIR64 10 #endif #pragma pack(push, 1) struct pe_header { IMAGE_DOS_HEADER doshdr; BYTE dosstub[0x40]; DWORD nt_sig; IMAGE_FILE_HEADER filehdr; #ifdef TCC_TARGET_X86_64 IMAGE_OPTIONAL_HEADER64 opthdr; #else #ifdef _WIN64 IMAGE_OPTIONAL_HEADER32 opthdr; #else IMAGE_OPTIONAL_HEADER opthdr; #endif #endif }; struct pe_reloc_header { DWORD offset; DWORD size; }; struct pe_rsrc_header { struct _IMAGE_FILE_HEADER filehdr; struct _IMAGE_SECTION_HEADER sectionhdr; }; struct pe_rsrc_reloc { DWORD offset; DWORD size; WORD type; }; #pragma pack(pop) /* ------------------------------------------------------------- */ /* internal temporary structures */ enum { sec_text = 0, sec_data , sec_bss , sec_idata , sec_pdata , sec_other , sec_rsrc , sec_stab , sec_stabstr , sec_reloc , sec_last }; #if 0 static const DWORD pe_sec_flags[] = { 0x60000020, /* ".text" , */ 0xC0000040, /* ".data" , */ 0xC0000080, /* ".bss" , */ 0x40000040, /* ".idata" , */ 0x40000040, /* ".pdata" , */ 0xE0000060, /* < other > , */ 0x40000040, /* ".rsrc" , */ 0x42000802, /* ".stab" , */ 0x42000040, /* ".reloc" , */ }; #endif struct section_info { int cls; char name[32]; DWORD sh_addr; DWORD sh_size; DWORD pe_flags; Section *sec; DWORD data_size; IMAGE_SECTION_HEADER ish; }; struct import_symbol { int sym_index; int iat_index; int thk_offset; }; struct pe_import_info { int dll_index; int sym_count; struct import_symbol **symbols; }; struct pe_info { TCCState *s1; Section *reloc; Section *thunk; const char *filename; int type; DWORD sizeofheaders; ADDR3264 imagebase; const char *start_symbol; DWORD start_addr; DWORD imp_offs; DWORD imp_size; DWORD iat_offs; DWORD iat_size; DWORD exp_offs; DWORD exp_size; int subsystem; DWORD section_align; DWORD file_align; struct section_info **sec_info; int sec_count; struct pe_import_info **imp_info; int imp_count; }; #define PE_NUL 0 #define PE_DLL 1 #define PE_GUI 2 #define PE_EXE 3 #define PE_RUN 4 /* --------------------------------------------*/ static const char *pe_export_name(TCCState *s1, ElfW(Sym) *sym) { const char *name = (char*)symtab_section->link->data + sym->st_name; if (s1->leading_underscore && name[0] == '_' && !(sym->st_other & ST_PE_STDCALL)) return name + 1; return name; } static int pe_find_import(TCCState * s1, ElfW(Sym) *sym) { char buffer[200]; const char *s, *p; int sym_index = 0, n = 0; int a, err = 0; do { s = pe_export_name(s1, sym); a = 0; if (n) { /* second try: */ if (sym->st_other & ST_PE_STDCALL) { /* try w/0 stdcall deco (windows API convention) */ p = strrchr(s, '@'); if (!p || s[0] != '_') break; strcpy(buffer, s+1)[p-s-1] = 0; } else if (s[0] != '_') { /* try non-ansi function */ buffer[0] = '_', strcpy(buffer + 1, s); } else if (0 == memcmp(s, "__imp_", 6)) { /* mingw 2.0 */ strcpy(buffer, s + 6), a = 1; } else if (0 == memcmp(s, "_imp__", 6)) { /* mingw 3.7 */ strcpy(buffer, s + 6), a = 1; } else { continue; } s = buffer; } sym_index = find_elf_sym(s1->dynsymtab_section, s); // printf("find (%d) %d %s\n", n, sym_index, s); if (sym_index && ELFW(ST_TYPE)(sym->st_info) == STT_OBJECT && 0 == (sym->st_other & ST_PE_IMPORT) && 0 == a ) err = -1, sym_index = 0; } while (0 == sym_index && ++n < 2); return n == 2 ? err : sym_index; } /*----------------------------------------------------------------------------*/ static int dynarray_assoc(void **pp, int n, int key) { int i; for (i = 0; i < n; ++i, ++pp) if (key == **(int **) pp) return i; return -1; } static DWORD umin(DWORD a, DWORD b) { return a < b ? a : b; } static DWORD umax(DWORD a, DWORD b) { return a < b ? b : a; } static DWORD pe_file_align(struct pe_info *pe, DWORD n) { return (n + (pe->file_align - 1)) & ~(pe->file_align - 1); } static DWORD pe_virtual_align(struct pe_info *pe, DWORD n) { return (n + (pe->section_align - 1)) & ~(pe->section_align - 1); } static void pe_align_section(Section *s, int a) { int i = s->data_offset & (a-1); if (i) section_ptr_add(s, a - i); } static void pe_set_datadir(struct pe_header *hdr, int dir, DWORD addr, DWORD size) { hdr->opthdr.DataDirectory[dir].VirtualAddress = addr; hdr->opthdr.DataDirectory[dir].Size = size; } struct pe_file { FILE *op; DWORD sum; unsigned pos; }; static int pe_fwrite(void *data, int len, struct pe_file *pf) { WORD *p = data; DWORD sum; int ret, i; pf->pos += (ret = fwrite(data, 1, len, pf->op)); sum = pf->sum; for (i = len; i > 0; i -= 2) { sum += (i >= 2) ? *p++ : *(BYTE*)p; sum = (sum + (sum >> 16)) & 0xFFFF; } pf->sum = sum; return len == ret ? 0 : -1; } static void pe_fpad(struct pe_file *pf, DWORD new_pos) { char buf[256]; int n, diff = new_pos - pf->pos; memset(buf, 0, sizeof buf); while (diff > 0) { diff -= n = umin(diff, sizeof buf); fwrite(buf, n, 1, pf->op); } pf->pos = new_pos; } /*----------------------------------------------------------------------------*/ static int pe_write(struct pe_info *pe) { static const struct pe_header pe_template = { { /* IMAGE_DOS_HEADER doshdr */ 0x5A4D, /*WORD e_magic; Magic number */ 0x0090, /*WORD e_cblp; Bytes on last page of file */ 0x0003, /*WORD e_cp; Pages in file */ 0x0000, /*WORD e_crlc; Relocations */ 0x0004, /*WORD e_cparhdr; Size of header in paragraphs */ 0x0000, /*WORD e_minalloc; Minimum extra paragraphs needed */ 0xFFFF, /*WORD e_maxalloc; Maximum extra paragraphs needed */ 0x0000, /*WORD e_ss; Initial (relative) SS value */ 0x00B8, /*WORD e_sp; Initial SP value */ 0x0000, /*WORD e_csum; Checksum */ 0x0000, /*WORD e_ip; Initial IP value */ 0x0000, /*WORD e_cs; Initial (relative) CS value */ 0x0040, /*WORD e_lfarlc; File address of relocation table */ 0x0000, /*WORD e_ovno; Overlay number */ {0,0,0,0}, /*WORD e_res[4]; Reserved words */ 0x0000, /*WORD e_oemid; OEM identifier (for e_oeminfo) */ 0x0000, /*WORD e_oeminfo; OEM information; e_oemid specific */ {0,0,0,0,0,0,0,0,0,0}, /*WORD e_res2[10]; Reserved words */ 0x00000080 /*DWORD e_lfanew; File address of new exe header */ },{ /* BYTE dosstub[0x40] */ /* 14 code bytes + "This program cannot be run in DOS mode.\r\r\n$" + 6 * 0x00 */ 0x0e,0x1f,0xba,0x0e,0x00,0xb4,0x09,0xcd,0x21,0xb8,0x01,0x4c,0xcd,0x21,0x54,0x68, 0x69,0x73,0x20,0x70,0x72,0x6f,0x67,0x72,0x61,0x6d,0x20,0x63,0x61,0x6e,0x6e,0x6f, 0x74,0x20,0x62,0x65,0x20,0x72,0x75,0x6e,0x20,0x69,0x6e,0x20,0x44,0x4f,0x53,0x20, 0x6d,0x6f,0x64,0x65,0x2e,0x0d,0x0d,0x0a,0x24,0x00,0x00,0x00,0x00,0x00,0x00,0x00, }, 0x00004550, /* DWORD nt_sig = IMAGE_NT_SIGNATURE */ { /* IMAGE_FILE_HEADER filehdr */ IMAGE_FILE_MACHINE, /*WORD Machine; */ 0x0003, /*WORD NumberOfSections; */ 0x00000000, /*DWORD TimeDateStamp; */ 0x00000000, /*DWORD PointerToSymbolTable; */ 0x00000000, /*DWORD NumberOfSymbols; */ #if defined(TCC_TARGET_X86_64) 0x00F0, /*WORD SizeOfOptionalHeader; */ 0x022F /*WORD Characteristics; */ #define CHARACTERISTICS_DLL 0x222E #elif defined(TCC_TARGET_I386) 0x00E0, /*WORD SizeOfOptionalHeader; */ 0x030F /*WORD Characteristics; */ #define CHARACTERISTICS_DLL 0x230E #elif defined(TCC_TARGET_ARM) 0x00E0, /*WORD SizeOfOptionalHeader; */ 0x010F, /*WORD Characteristics; */ #define CHARACTERISTICS_DLL 0x230F #endif },{ /* IMAGE_OPTIONAL_HEADER opthdr */ /* Standard fields. */ #ifdef TCC_TARGET_X86_64 0x020B, /*WORD Magic; */ #else 0x010B, /*WORD Magic; */ #endif 0x06, /*BYTE MajorLinkerVersion; */ 0x00, /*BYTE MinorLinkerVersion; */ 0x00000000, /*DWORD SizeOfCode; */ 0x00000000, /*DWORD SizeOfInitializedData; */ 0x00000000, /*DWORD SizeOfUninitializedData; */ 0x00000000, /*DWORD AddressOfEntryPoint; */ 0x00000000, /*DWORD BaseOfCode; */ #ifndef TCC_TARGET_X86_64 0x00000000, /*DWORD BaseOfData; */ #endif /* NT additional fields. */ #if defined(TCC_TARGET_ARM) 0x00100000, /*DWORD ImageBase; */ #else 0x00400000, /*DWORD ImageBase; */ #endif 0x00001000, /*DWORD SectionAlignment; */ 0x00000200, /*DWORD FileAlignment; */ 0x0004, /*WORD MajorOperatingSystemVersion; */ 0x0000, /*WORD MinorOperatingSystemVersion; */ 0x0000, /*WORD MajorImageVersion; */ 0x0000, /*WORD MinorImageVersion; */ 0x0004, /*WORD MajorSubsystemVersion; */ 0x0000, /*WORD MinorSubsystemVersion; */ 0x00000000, /*DWORD Win32VersionValue; */ 0x00000000, /*DWORD SizeOfImage; */ 0x00000200, /*DWORD SizeOfHeaders; */ 0x00000000, /*DWORD CheckSum; */ 0x0002, /*WORD Subsystem; */ 0x0000, /*WORD DllCharacteristics; */ 0x00100000, /*DWORD SizeOfStackReserve; */ 0x00001000, /*DWORD SizeOfStackCommit; */ 0x00100000, /*DWORD SizeOfHeapReserve; */ 0x00001000, /*DWORD SizeOfHeapCommit; */ 0x00000000, /*DWORD LoaderFlags; */ 0x00000010, /*DWORD NumberOfRvaAndSizes; */ /* IMAGE_DATA_DIRECTORY DataDirectory[16]; */ {{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}} }}; struct pe_header pe_header = pe_template; int i; struct pe_file pf = {0}; DWORD file_offset; struct section_info *si; IMAGE_SECTION_HEADER *psh; TCCState *s1 = pe->s1; pf.op = fopen(pe->filename, "wb"); if (NULL == pf.op) { tcc_error_noabort("could not write '%s': %s", pe->filename, strerror(errno)); return -1; } pe->sizeofheaders = pe_file_align(pe, sizeof (struct pe_header) + pe->sec_count * sizeof (IMAGE_SECTION_HEADER) ); file_offset = pe->sizeofheaders; if (2 == pe->s1->verbose) printf("-------------------------------" "\n virt file size section" "\n"); for (i = 0; i < pe->sec_count; ++i) { DWORD addr, size; const char *sh_name; si = pe->sec_info[i]; sh_name = si->name; addr = si->sh_addr - pe->imagebase; size = si->sh_size; psh = &si->ish; if (2 == pe->s1->verbose) printf("%6x %6x %6x %s\n", (unsigned)addr, (unsigned)file_offset, (unsigned)size, sh_name); switch (si->cls) { case sec_text: if (!pe_header.opthdr.BaseOfCode) pe_header.opthdr.BaseOfCode = addr; break; case sec_data: #ifndef TCC_TARGET_X86_64 if (!pe_header.opthdr.BaseOfData) pe_header.opthdr.BaseOfData = addr; #endif break; case sec_bss: break; case sec_reloc: pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_BASERELOC, addr, size); break; case sec_rsrc: pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_RESOURCE, addr, size); break; case sec_pdata: pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_EXCEPTION, addr, size); break; } if (pe->imp_size) { pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IMPORT, pe->imp_offs, pe->imp_size); pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IAT, pe->iat_offs, pe->iat_size); } if (pe->exp_size) { pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_EXPORT, pe->exp_offs, pe->exp_size); } memcpy(psh->Name, sh_name, umin(strlen(sh_name), sizeof psh->Name)); psh->Characteristics = si->pe_flags; psh->VirtualAddress = addr; psh->Misc.VirtualSize = size; pe_header.opthdr.SizeOfImage = umax(pe_virtual_align(pe, size + addr), pe_header.opthdr.SizeOfImage); if (si->data_size) { psh->PointerToRawData = file_offset; file_offset = pe_file_align(pe, file_offset + si->data_size); psh->SizeOfRawData = file_offset - psh->PointerToRawData; if (si->cls == sec_text) pe_header.opthdr.SizeOfCode += psh->SizeOfRawData; else pe_header.opthdr.SizeOfInitializedData += psh->SizeOfRawData; } } //pe_header.filehdr.TimeDateStamp = time(NULL); pe_header.filehdr.NumberOfSections = pe->sec_count; pe_header.opthdr.AddressOfEntryPoint = pe->start_addr; pe_header.opthdr.SizeOfHeaders = pe->sizeofheaders; pe_header.opthdr.ImageBase = pe->imagebase; pe_header.opthdr.Subsystem = pe->subsystem; if (pe->s1->pe_stack_size) pe_header.opthdr.SizeOfStackReserve = pe->s1->pe_stack_size; if (PE_DLL == pe->type) pe_header.filehdr.Characteristics = CHARACTERISTICS_DLL; pe_header.filehdr.Characteristics |= pe->s1->pe_characteristics; pe_fwrite(&pe_header, sizeof pe_header, &pf); for (i = 0; i < pe->sec_count; ++i) pe_fwrite(&pe->sec_info[i]->ish, sizeof(IMAGE_SECTION_HEADER), &pf); file_offset = pe->sizeofheaders; for (i = 0; i < pe->sec_count; ++i) { Section *s; si = pe->sec_info[i]; for (s = si->sec; s; s = s->prev) { pe_fpad(&pf, file_offset); pe_fwrite(s->data, s->data_offset, &pf); if (s->prev) file_offset += s->prev->sh_addr - s->sh_addr; } file_offset = si->ish.PointerToRawData + si->ish.SizeOfRawData; pe_fpad(&pf, file_offset); } pf.sum += file_offset; fseek(pf.op, offsetof(struct pe_header, opthdr.CheckSum), SEEK_SET); pe_fwrite(&pf.sum, sizeof (DWORD), &pf); fclose (pf.op); #ifndef _WIN32 chmod(pe->filename, 0777); #endif if (2 == pe->s1->verbose) printf("-------------------------------\n"); if (pe->s1->verbose) printf("<- %s (%u bytes)\n", pe->filename, (unsigned)file_offset); return 0; } /*----------------------------------------------------------------------------*/ static struct import_symbol *pe_add_import(struct pe_info *pe, int sym_index) { int i; int dll_index; struct pe_import_info *p; struct import_symbol *s; ElfW(Sym) *isym; isym = (ElfW(Sym) *)pe->s1->dynsymtab_section->data + sym_index; dll_index = isym->st_size; i = dynarray_assoc ((void**)pe->imp_info, pe->imp_count, dll_index); if (-1 != i) { p = pe->imp_info[i]; goto found_dll; } p = tcc_mallocz(sizeof *p); p->dll_index = dll_index; dynarray_add(&pe->imp_info, &pe->imp_count, p); found_dll: i = dynarray_assoc ((void**)p->symbols, p->sym_count, sym_index); if (-1 != i) return p->symbols[i]; s = tcc_mallocz(sizeof *s); dynarray_add(&p->symbols, &p->sym_count, s); s->sym_index = sym_index; return s; } void pe_free_imports(struct pe_info *pe) { int i; for (i = 0; i < pe->imp_count; ++i) { struct pe_import_info *p = pe->imp_info[i]; dynarray_reset(&p->symbols, &p->sym_count); } dynarray_reset(&pe->imp_info, &pe->imp_count); } /*----------------------------------------------------------------------------*/ static void pe_build_imports(struct pe_info *pe) { int thk_ptr, ent_ptr, dll_ptr, sym_cnt, i; DWORD rva_base = pe->thunk->sh_addr - pe->imagebase; int ndlls = pe->imp_count; TCCState *s1 = pe->s1; for (sym_cnt = i = 0; i < ndlls; ++i) sym_cnt += pe->imp_info[i]->sym_count; if (0 == sym_cnt) return; pe_align_section(pe->thunk, 16); pe->imp_size = (ndlls + 1) * sizeof(IMAGE_IMPORT_DESCRIPTOR); pe->iat_size = (sym_cnt + ndlls) * sizeof(ADDR3264); dll_ptr = pe->thunk->data_offset; thk_ptr = dll_ptr + pe->imp_size; ent_ptr = thk_ptr + pe->iat_size; pe->imp_offs = dll_ptr + rva_base; pe->iat_offs = thk_ptr + rva_base; section_ptr_add(pe->thunk, pe->imp_size + 2*pe->iat_size); for (i = 0; i < pe->imp_count; ++i) { IMAGE_IMPORT_DESCRIPTOR *hdr; int k, n, dllindex; ADDR3264 v; struct pe_import_info *p = pe->imp_info[i]; const char *name; DLLReference *dllref; dllindex = p->dll_index; if (dllindex) name = (dllref = pe->s1->loaded_dlls[dllindex-1])->name; else name = "", dllref = NULL; /* put the dll name into the import header */ v = put_elf_str(pe->thunk, name); hdr = (IMAGE_IMPORT_DESCRIPTOR*)(pe->thunk->data + dll_ptr); hdr->FirstThunk = thk_ptr + rva_base; hdr->OriginalFirstThunk = ent_ptr + rva_base; hdr->Name = v + rva_base; for (k = 0, n = p->sym_count; k <= n; ++k) { if (k < n) { int iat_index = p->symbols[k]->iat_index; int sym_index = p->symbols[k]->sym_index; ElfW(Sym) *imp_sym = (ElfW(Sym) *)pe->s1->dynsymtab_section->data + sym_index; ElfW(Sym) *org_sym = (ElfW(Sym) *)symtab_section->data + iat_index; const char *name = (char*)pe->s1->dynsymtab_section->link->data + imp_sym->st_name; int ordinal; org_sym->st_value = thk_ptr; org_sym->st_shndx = pe->thunk->sh_num; if (dllref) v = 0, ordinal = imp_sym->st_value; /* ordinal from pe_load_def */ else ordinal = 0, v = imp_sym->st_value; /* address from tcc_add_symbol() */ #ifdef TCC_IS_NATIVE if (pe->type == PE_RUN) { if (dllref) { if ( !dllref->handle ) dllref->handle = LoadLibrary(dllref->name); v = (ADDR3264)GetProcAddress(dllref->handle, ordinal?(char*)0+ordinal:name); } if (!v) tcc_error_noabort("can't build symbol '%s'", name); } else #endif if (ordinal) { v = ordinal | (ADDR3264)1 << (sizeof(ADDR3264)*8 - 1); } else { v = pe->thunk->data_offset + rva_base; section_ptr_add(pe->thunk, sizeof(WORD)); /* hint, not used */ put_elf_str(pe->thunk, name); } } else { v = 0; /* last entry is zero */ } *(ADDR3264*)(pe->thunk->data+thk_ptr) = *(ADDR3264*)(pe->thunk->data+ent_ptr) = v; thk_ptr += sizeof (ADDR3264); ent_ptr += sizeof (ADDR3264); } dll_ptr += sizeof(IMAGE_IMPORT_DESCRIPTOR); } } /* ------------------------------------------------------------- */ struct pe_sort_sym { int index; const char *name; }; static int sym_cmp(const void *va, const void *vb) { const char *ca = (*(struct pe_sort_sym**)va)->name; const char *cb = (*(struct pe_sort_sym**)vb)->name; return strcmp(ca, cb); } static void pe_build_exports(struct pe_info *pe) { ElfW(Sym) *sym; int sym_index, sym_end; DWORD rva_base, base_o, func_o, name_o, ord_o, str_o; IMAGE_EXPORT_DIRECTORY *hdr; int sym_count, ord; struct pe_sort_sym **sorted, *p; TCCState *s1 = pe->s1; FILE *op; char buf[260]; const char *dllname; const char *name; rva_base = pe->thunk->sh_addr - pe->imagebase; sym_count = 0, sorted = NULL, op = NULL; sym_end = symtab_section->data_offset / sizeof(ElfW(Sym)); for (sym_index = 1; sym_index < sym_end; ++sym_index) { sym = (ElfW(Sym)*)symtab_section->data + sym_index; name = pe_export_name(pe->s1, sym); if ((sym->st_other & ST_PE_EXPORT) /* export only symbols from actually written sections */ && pe->s1->sections[sym->st_shndx]->sh_addr) { p = tcc_malloc(sizeof *p); p->index = sym_index; p->name = name; dynarray_add(&sorted, &sym_count, p); } #if 0 if (sym->st_other & ST_PE_EXPORT) printf("export: %s\n", name); if (sym->st_other & ST_PE_STDCALL) printf("stdcall: %s\n", name); #endif } if (0 == sym_count) return; qsort (sorted, sym_count, sizeof *sorted, sym_cmp); pe_align_section(pe->thunk, 16); dllname = tcc_basename(pe->filename); base_o = pe->thunk->data_offset; func_o = base_o + sizeof(IMAGE_EXPORT_DIRECTORY); name_o = func_o + sym_count * sizeof (DWORD); ord_o = name_o + sym_count * sizeof (DWORD); str_o = ord_o + sym_count * sizeof(WORD); hdr = section_ptr_add(pe->thunk, str_o - base_o); hdr->Characteristics = 0; hdr->Base = 1; hdr->NumberOfFunctions = sym_count; hdr->NumberOfNames = sym_count; hdr->AddressOfFunctions = func_o + rva_base; hdr->AddressOfNames = name_o + rva_base; hdr->AddressOfNameOrdinals = ord_o + rva_base; hdr->Name = str_o + rva_base; put_elf_str(pe->thunk, dllname); #if 1 /* automatically write exports to .def */ pstrcpy(buf, sizeof buf, pe->filename); strcpy(tcc_fileextension(buf), ".def"); op = fopen(buf, "wb"); if (NULL == op) { tcc_error_noabort("could not create '%s': %s", buf, strerror(errno)); } else { fprintf(op, "LIBRARY %s\n\nEXPORTS\n", dllname); if (pe->s1->verbose) printf("<- %s (%d symbol%s)\n", buf, sym_count, &"s"[sym_count < 2]); } #endif for (ord = 0; ord < sym_count; ++ord) { p = sorted[ord], sym_index = p->index, name = p->name; /* insert actual address later in relocate_section() */ put_elf_reloc(symtab_section, pe->thunk, func_o, R_XXX_RELATIVE, sym_index); *(DWORD*)(pe->thunk->data + name_o) = pe->thunk->data_offset + rva_base; *(WORD*)(pe->thunk->data + ord_o) = ord; put_elf_str(pe->thunk, name); func_o += sizeof (DWORD); name_o += sizeof (DWORD); ord_o += sizeof (WORD); if (op) fprintf(op, "%s\n", name); } pe->exp_offs = base_o + rva_base; pe->exp_size = pe->thunk->data_offset - base_o; dynarray_reset(&sorted, &sym_count); if (op) fclose(op); } /* ------------------------------------------------------------- */ static void pe_build_reloc (struct pe_info *pe) { DWORD offset, block_ptr, sh_addr, addr; int count, i; ElfW_Rel *rel, *rel_end; Section *s = NULL, *sr; struct pe_reloc_header *hdr; sh_addr = offset = block_ptr = count = i = 0; rel = rel_end = NULL; for(;;) { if (rel < rel_end) { int type = ELFW(R_TYPE)(rel->r_info); addr = rel->r_offset + sh_addr; ++ rel; if (type != REL_TYPE_DIRECT) continue; if (count == 0) { /* new block */ block_ptr = pe->reloc->data_offset; section_ptr_add(pe->reloc, sizeof(struct pe_reloc_header)); offset = addr & 0xFFFFFFFF<<12; } if ((addr -= offset) < (1<<12)) { /* one block spans 4k addresses */ WORD *wp = section_ptr_add(pe->reloc, sizeof (WORD)); *wp = addr | PE_IMAGE_REL<<12; ++count; continue; } -- rel; } else if (s) { sr = s->reloc; if (sr) { rel = (ElfW_Rel *)sr->data; rel_end = (ElfW_Rel *)(sr->data + sr->data_offset); sh_addr = s->sh_addr; } s = s->prev; continue; } else if (i < pe->sec_count) { s = pe->sec_info[i]->sec, ++i; continue; } else if (!count) break; /* fill the last block and ready for a new one */ if (count & 1) /* align for DWORDS */ section_ptr_add(pe->reloc, sizeof(WORD)), ++count; hdr = (struct pe_reloc_header *)(pe->reloc->data + block_ptr); hdr -> offset = offset - pe->imagebase; hdr -> size = count * sizeof(WORD) + sizeof(struct pe_reloc_header); count = 0; } } /* ------------------------------------------------------------- */ static int pe_section_class(Section *s) { int type, flags; const char *name; type = s->sh_type; flags = s->sh_flags; name = s->name; if (flags & SHF_ALLOC) { if (type == SHT_PROGBITS) { if (flags & SHF_EXECINSTR) return sec_text; if (flags & SHF_WRITE) return sec_data; if (0 == strcmp(name, ".rsrc")) return sec_rsrc; if (0 == strcmp(name, ".iedat")) return sec_idata; if (0 == strcmp(name, ".pdata")) return sec_pdata; } else if (type == SHT_NOBITS) { if (flags & SHF_WRITE) return sec_bss; } } else { if (0 == strcmp(name, ".reloc")) return sec_reloc; } if (0 == memcmp(name, ".stab", 5)) return name[5] ? sec_stabstr : sec_stab; if (flags & SHF_ALLOC) return sec_other; return -1; } static int pe_assign_addresses (struct pe_info *pe) { int i, k, o, c; DWORD addr; int *section_order; struct section_info *si; Section *s; if (PE_DLL == pe->type) pe->reloc = new_section(pe->s1, ".reloc", SHT_PROGBITS, 0); // pe->thunk = new_section(pe->s1, ".iedat", SHT_PROGBITS, SHF_ALLOC); section_order = tcc_malloc(pe->s1->nb_sections * sizeof (int)); for (o = k = 0 ; k < sec_last; ++k) { for (i = 1; i < pe->s1->nb_sections; ++i) { s = pe->s1->sections[i]; if (k == pe_section_class(s)) section_order[o++] = i; } } si = NULL; addr = pe->imagebase + 1; for (i = 0; i < o; ++i) { k = section_order[i]; s = pe->s1->sections[k]; c = pe_section_class(s); if ((c == sec_stab || c == sec_stabstr) && 0 == pe->s1->do_debug) continue; #ifdef PE_MERGE_DATA if (c == sec_bss) c = sec_data; #endif if (si && c == si->cls) { /* merge with previous section */ s->sh_addr = addr = ((addr - 1) | (16 - 1)) + 1; } else { si = NULL; s->sh_addr = addr = pe_virtual_align(pe, addr); } if (c == sec_data && NULL == pe->thunk) pe->thunk = s; if (s == pe->thunk) { pe_build_imports(pe); pe_build_exports(pe); } if (s == pe->reloc) pe_build_reloc (pe); if (0 == s->data_offset) continue; if (si) goto add_section; si = tcc_mallocz(sizeof *si); dynarray_add(&pe->sec_info, &pe->sec_count, si); strcpy(si->name, s->name); si->cls = c; si->sh_addr = addr; si->pe_flags = IMAGE_SCN_MEM_READ; if (s->sh_flags & SHF_EXECINSTR) si->pe_flags |= IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_CNT_CODE; else if (s->sh_type == SHT_NOBITS) si->pe_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA; else si->pe_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA; if (s->sh_flags & SHF_WRITE) si->pe_flags |= IMAGE_SCN_MEM_WRITE; if (0 == (s->sh_flags & SHF_ALLOC)) si->pe_flags |= IMAGE_SCN_MEM_DISCARDABLE; add_section: addr += s->data_offset; si->sh_size = addr - si->sh_addr; if (s->sh_type != SHT_NOBITS) { Section **ps = &si->sec; while (*ps) ps = &(*ps)->prev; *ps = s, s->prev = NULL; si->data_size = si->sh_size; } //printf("%08x %05x %08x %s\n", si->sh_addr, si->sh_size, si->pe_flags, s->name); } tcc_free(section_order); #if 0 for (i = 1; i < pe->s1->nb_sections; ++i) { Section *s = pe->s1->sections[i]; int type = s->sh_type; int flags = s->sh_flags; printf("section %-16s %-10s %08x %04x %s,%s,%s\n", s->name, type == SHT_PROGBITS ? "progbits" : type == SHT_NOBITS ? "nobits" : type == SHT_SYMTAB ? "symtab" : type == SHT_STRTAB ? "strtab" : type == SHT_RELX ? "rel" : "???", s->sh_addr, s->data_offset, flags & SHF_ALLOC ? "alloc" : "", flags & SHF_WRITE ? "write" : "", flags & SHF_EXECINSTR ? "exec" : "" ); } pe->s1->verbose = 2; #endif return 0; } /*----------------------------------------------------------------------------*/ static int pe_isafunc(TCCState *s1, int sym_index) { Section *sr = text_section->reloc; ElfW_Rel *rel, *rel_end; Elf32_Word info = ELF32_R_INFO(sym_index, R_386_PC32); if (!sr) return 0; rel_end = (ElfW_Rel *)(sr->data + sr->data_offset); for (rel = (ElfW_Rel *)sr->data; rel < rel_end; rel++) if (rel->r_info == info) return 1; return 0; } /*----------------------------------------------------------------------------*/ static int pe_check_symbols(struct pe_info *pe) { ElfW(Sym) *sym; int sym_index, sym_end; int ret = 0; TCCState *s1 = pe->s1; pe_align_section(text_section, 8); sym_end = symtab_section->data_offset / sizeof(ElfW(Sym)); for (sym_index = 1; sym_index < sym_end; ++sym_index) { sym = (ElfW(Sym) *)symtab_section->data + sym_index; if (sym->st_shndx == SHN_UNDEF) { const char *name = (char*)symtab_section->link->data + sym->st_name; unsigned type = ELFW(ST_TYPE)(sym->st_info); int imp_sym = pe_find_import(pe->s1, sym); struct import_symbol *is; if (imp_sym <= 0) goto not_found; if (type == STT_NOTYPE) { /* symbols from assembler have no type, find out which */ if (pe_isafunc(s1, sym_index)) type = STT_FUNC; else type = STT_OBJECT; } is = pe_add_import(pe, imp_sym); if (type == STT_FUNC) { unsigned long offset = is->thk_offset; if (offset) { /* got aliased symbol, like stricmp and _stricmp */ } else { char buffer[100]; WORD *p; offset = text_section->data_offset; /* add the 'jmp IAT[x]' instruction */ #ifdef TCC_TARGET_ARM p = section_ptr_add(text_section, 8+4); // room for code and address (*(DWORD*)(p)) = 0xE59FC000; // arm code ldr ip, [pc] ; PC+8+0 = 0001xxxx (*(DWORD*)(p+2)) = 0xE59CF000; // arm code ldr pc, [ip] #else p = section_ptr_add(text_section, 8); *p = 0x25FF; #ifdef TCC_TARGET_X86_64 *(DWORD*)(p+1) = (DWORD)-4; #endif #endif /* add a helper symbol, will be patched later in pe_build_imports */ sprintf(buffer, "IAT.%s", name); is->iat_index = put_elf_sym( symtab_section, 0, sizeof(DWORD), ELFW(ST_INFO)(STB_GLOBAL, STT_OBJECT), 0, SHN_UNDEF, buffer); #ifdef TCC_TARGET_ARM put_elf_reloc(symtab_section, text_section, offset + 8, R_XXX_THUNKFIX, is->iat_index); // offset to IAT position #else put_elf_reloc(symtab_section, text_section, offset + 2, R_XXX_THUNKFIX, is->iat_index); #endif is->thk_offset = offset; } /* tcc_realloc might have altered sym's address */ sym = (ElfW(Sym) *)symtab_section->data + sym_index; /* patch the original symbol */ sym->st_value = offset; sym->st_shndx = text_section->sh_num; sym->st_other &= ~ST_PE_EXPORT; /* do not export */ continue; } if (type == STT_OBJECT) { /* data, ptr to that should be */ if (0 == is->iat_index) { /* original symbol will be patched later in pe_build_imports */ is->iat_index = sym_index; continue; } } not_found: if (ELFW(ST_BIND)(sym->st_info) == STB_WEAK) /* STB_WEAK undefined symbols are accepted */ continue; tcc_error_noabort("undefined symbol '%s'%s", name, imp_sym < 0 ? ", missing __declspec(dllimport)?":""); ret = -1; } else if (pe->s1->rdynamic && ELFW(ST_BIND)(sym->st_info) != STB_LOCAL) { /* if -rdynamic option, then export all non local symbols */ sym->st_other |= ST_PE_EXPORT; } } return ret; } /*----------------------------------------------------------------------------*/ #ifdef PE_PRINT_SECTIONS static void pe_print_section(FILE * f, Section * s) { /* just if you're curious */ BYTE *p, *e, b; int i, n, l, m; p = s->data; e = s->data + s->data_offset; l = e - p; fprintf(f, "section \"%s\"", s->name); if (s->link) fprintf(f, "\nlink \"%s\"", s->link->name); if (s->reloc) fprintf(f, "\nreloc \"%s\"", s->reloc->name); fprintf(f, "\nv_addr %08X", (unsigned)s->sh_addr); fprintf(f, "\ncontents %08X", (unsigned)l); fprintf(f, "\n\n"); if (s->sh_type == SHT_NOBITS) return; if (0 == l) return; if (s->sh_type == SHT_SYMTAB) m = sizeof(ElfW(Sym)); else if (s->sh_type == SHT_RELX) m = sizeof(ElfW_Rel); else m = 16; fprintf(f, "%-8s", "offset"); for (i = 0; i < m; ++i) fprintf(f, " %02x", i); n = 56; if (s->sh_type == SHT_SYMTAB || s->sh_type == SHT_RELX) { const char *fields1[] = { "name", "value", "size", "bind", "type", "other", "shndx", NULL }; const char *fields2[] = { "offs", "type", "symb", NULL }; const char **p; if (s->sh_type == SHT_SYMTAB) p = fields1, n = 106; else p = fields2, n = 58; for (i = 0; p[i]; ++i) fprintf(f, "%6s", p[i]); fprintf(f, " symbol"); } fprintf(f, "\n"); for (i = 0; i < n; ++i) fprintf(f, "-"); fprintf(f, "\n"); for (i = 0; i < l;) { fprintf(f, "%08X", i); for (n = 0; n < m; ++n) { if (n + i < l) fprintf(f, " %02X", p[i + n]); else fprintf(f, " "); } if (s->sh_type == SHT_SYMTAB) { ElfW(Sym) *sym = (ElfW(Sym) *) (p + i); const char *name = s->link->data + sym->st_name; fprintf(f, " %04X %04X %04X %02X %02X %02X %04X \"%s\"", (unsigned)sym->st_name, (unsigned)sym->st_value, (unsigned)sym->st_size, (unsigned)ELFW(ST_BIND)(sym->st_info), (unsigned)ELFW(ST_TYPE)(sym->st_info), (unsigned)sym->st_other, (unsigned)sym->st_shndx, name); } else if (s->sh_type == SHT_RELX) { ElfW_Rel *rel = (ElfW_Rel *) (p + i); ElfW(Sym) *sym = (ElfW(Sym) *) s->link->data + ELFW(R_SYM)(rel->r_info); const char *name = s->link->link->data + sym->st_name; fprintf(f, " %04X %02X %04X \"%s\"", (unsigned)rel->r_offset, (unsigned)ELFW(R_TYPE)(rel->r_info), (unsigned)ELFW(R_SYM)(rel->r_info), name); } else { fprintf(f, " "); for (n = 0; n < m; ++n) { if (n + i < l) { b = p[i + n]; if (b < 32 || b >= 127) b = '.'; fprintf(f, "%c", b); } } } i += m; fprintf(f, "\n"); } fprintf(f, "\n\n"); } static void pe_print_sections(TCCState *s1, const char *fname) { Section *s; FILE *f; int i; f = fopen(fname, "w"); for (i = 1; i < s1->nb_sections; ++i) { s = s1->sections[i]; pe_print_section(f, s); } pe_print_section(f, s1->dynsymtab_section); fclose(f); } #endif /* ------------------------------------------------------------- */ /* helper function for load/store to insert one more indirection */ #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64 ST_FUNC SValue *pe_getimport(SValue *sv, SValue *v2) { int r2; if ((sv->r & (VT_VALMASK|VT_SYM)) != (VT_CONST|VT_SYM) || (sv->r2 != VT_CONST)) return sv; if (!sv->sym->a.dllimport) return sv; // printf("import %04x %04x %04x %s\n", sv->type.t, sv->sym->type.t, sv->r, get_tok_str(sv->sym->v, NULL)); memset(v2, 0, sizeof *v2); v2->type.t = VT_PTR; v2->r = VT_CONST | VT_SYM | VT_LVAL; v2->sym = sv->sym; r2 = get_reg(RC_INT); load(r2, v2); v2->r = r2; if ((uint32_t)sv->c.i) { vpushv(v2); vpushi(sv->c.i); gen_opi('+'); *v2 = *vtop--; } v2->type.t = sv->type.t; v2->r |= sv->r & VT_LVAL; return v2; } #endif ST_FUNC int pe_putimport(TCCState *s1, int dllindex, const char *name, addr_t value) { return set_elf_sym( s1->dynsymtab_section, value, dllindex, /* st_size */ ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0, value ? SHN_ABS : SHN_UNDEF, name ); } static int add_dllref(TCCState *s1, const char *dllname) { DLLReference *dllref; int i; for (i = 0; i < s1->nb_loaded_dlls; ++i) if (0 == strcmp(s1->loaded_dlls[i]->name, dllname)) return i + 1; dllref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname)); strcpy(dllref->name, dllname); dynarray_add(&s1->loaded_dlls, &s1->nb_loaded_dlls, dllref); return s1->nb_loaded_dlls; } /* ------------------------------------------------------------- */ static int read_mem(int fd, unsigned offset, void *buffer, unsigned len) { lseek(fd, offset, SEEK_SET); return len == read(fd, buffer, len); } /* ------------------------------------------------------------- */ PUB_FUNC int tcc_get_dllexports(const char *filename, char **pp) { int l, i, n, n0, ret; char *p; int fd; IMAGE_SECTION_HEADER ish; IMAGE_EXPORT_DIRECTORY ied; IMAGE_DOS_HEADER dh; IMAGE_FILE_HEADER ih; DWORD sig, ref, addr, ptr, namep; int pef_hdroffset, opt_hdroffset, sec_hdroffset; n = n0 = 0; p = NULL; ret = -1; fd = open(filename, O_RDONLY | O_BINARY); if (fd < 0) goto the_end_1; ret = 1; if (!read_mem(fd, 0, &dh, sizeof dh)) goto the_end; if (!read_mem(fd, dh.e_lfanew, &sig, sizeof sig)) goto the_end; if (sig != 0x00004550) goto the_end; pef_hdroffset = dh.e_lfanew + sizeof sig; if (!read_mem(fd, pef_hdroffset, &ih, sizeof ih)) goto the_end; opt_hdroffset = pef_hdroffset + sizeof ih; if (ih.Machine == 0x014C) { IMAGE_OPTIONAL_HEADER32 oh; sec_hdroffset = opt_hdroffset + sizeof oh; if (!read_mem(fd, opt_hdroffset, &oh, sizeof oh)) goto the_end; if (IMAGE_DIRECTORY_ENTRY_EXPORT >= oh.NumberOfRvaAndSizes) goto the_end_0; addr = oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress; } else if (ih.Machine == 0x8664) { IMAGE_OPTIONAL_HEADER64 oh; sec_hdroffset = opt_hdroffset + sizeof oh; if (!read_mem(fd, opt_hdroffset, &oh, sizeof oh)) goto the_end; if (IMAGE_DIRECTORY_ENTRY_EXPORT >= oh.NumberOfRvaAndSizes) goto the_end_0; addr = oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress; } else goto the_end; //printf("addr: %08x\n", addr); for (i = 0; i < ih.NumberOfSections; ++i) { if (!read_mem(fd, sec_hdroffset + i * sizeof ish, &ish, sizeof ish)) goto the_end; //printf("vaddr: %08x\n", ish.VirtualAddress); if (addr >= ish.VirtualAddress && addr < ish.VirtualAddress + ish.SizeOfRawData) goto found; } goto the_end_0; found: ref = ish.VirtualAddress - ish.PointerToRawData; if (!read_mem(fd, addr - ref, &ied, sizeof ied)) goto the_end; namep = ied.AddressOfNames - ref; for (i = 0; i < ied.NumberOfNames; ++i) { if (!read_mem(fd, namep, &ptr, sizeof ptr)) goto the_end; namep += sizeof ptr; for (l = 0;;) { if (n+1 >= n0) p = tcc_realloc(p, n0 = n0 ? n0 * 2 : 256); if (!read_mem(fd, ptr - ref + l++, p + n, 1)) { tcc_free(p), p = NULL; goto the_end; } if (p[n++] == 0) break; } } if (p) p[n] = 0; the_end_0: ret = 0; the_end: close(fd); the_end_1: *pp = p; return ret; } /* ------------------------------------------------------------- * This is for compiled windows resources in 'coff' format * as generated by 'windres.exe -O coff ...'. */ static int pe_load_res(TCCState *s1, int fd) { struct pe_rsrc_header hdr; Section *rsrc_section; int i, ret = -1, sym_index; BYTE *ptr; unsigned offs; if (!read_mem(fd, 0, &hdr, sizeof hdr)) goto quit; if (hdr.filehdr.Machine != IMAGE_FILE_MACHINE || hdr.filehdr.NumberOfSections != 1 || strcmp((char*)hdr.sectionhdr.Name, ".rsrc") != 0) goto quit; rsrc_section = new_section(s1, ".rsrc", SHT_PROGBITS, SHF_ALLOC); ptr = section_ptr_add(rsrc_section, hdr.sectionhdr.SizeOfRawData); offs = hdr.sectionhdr.PointerToRawData; if (!read_mem(fd, offs, ptr, hdr.sectionhdr.SizeOfRawData)) goto quit; offs = hdr.sectionhdr.PointerToRelocations; sym_index = put_elf_sym(symtab_section, 0, 0, 0, 0, rsrc_section->sh_num, ".rsrc"); for (i = 0; i < hdr.sectionhdr.NumberOfRelocations; ++i) { struct pe_rsrc_reloc rel; if (!read_mem(fd, offs, &rel, sizeof rel)) goto quit; // printf("rsrc_reloc: %x %x %x\n", rel.offset, rel.size, rel.type); if (rel.type != RSRC_RELTYPE) goto quit; put_elf_reloc(symtab_section, rsrc_section, rel.offset, R_XXX_RELATIVE, sym_index); offs += sizeof rel; } ret = 0; quit: return ret; } /* ------------------------------------------------------------- */ static char *trimfront(char *p) { while (*p && (unsigned char)*p <= ' ') ++p; return p; } static char *trimback(char *a, char *e) { while (e > a && (unsigned char)e[-1] <= ' ') --e; *e = 0;; return a; } /* ------------------------------------------------------------- */ static int pe_load_def(TCCState *s1, int fd) { int state = 0, ret = -1, dllindex = 0, ord; char line[400], dllname[80], *p, *x; FILE *fp; fp = fdopen(dup(fd), "rb"); while (fgets(line, sizeof line, fp)) { p = trimfront(trimback(line, strchr(line, 0))); if (0 == *p || ';' == *p) continue; switch (state) { case 0: if (0 != strnicmp(p, "LIBRARY", 7)) goto quit; pstrcpy(dllname, sizeof dllname, trimfront(p+7)); ++state; continue; case 1: if (0 != stricmp(p, "EXPORTS")) goto quit; ++state; continue; case 2: dllindex = add_dllref(s1, dllname); ++state; /* fall through */ default: /* get ordinal and will store in sym->st_value */ ord = 0; x = strchr(p, ' '); if (x) { *x = 0, x = strrchr(x + 1, '@'); if (x) { char *d; ord = (int)strtol(x + 1, &d, 10); if (*d) ord = 0; } } pe_putimport(s1, dllindex, p, ord); continue; } } ret = 0; quit: fclose(fp); return ret; } /* ------------------------------------------------------------- */ static int pe_load_dll(TCCState *s1, const char *filename) { char *p, *q; int index, ret; ret = tcc_get_dllexports(filename, &p); if (ret) { return -1; } else if (p) { index = add_dllref(s1, tcc_basename(filename)); for (q = p; *q; q += 1 + strlen(q)) pe_putimport(s1, index, q, 0); tcc_free(p); } return 0; } /* ------------------------------------------------------------- */ ST_FUNC int pe_load_file(struct TCCState *s1, const char *filename, int fd) { int ret = -1; char buf[10]; if (0 == strcmp(tcc_fileextension(filename), ".def")) ret = pe_load_def(s1, fd); else if (pe_load_res(s1, fd) == 0) ret = 0; else if (read_mem(fd, 0, buf, 4) && 0 == memcmp(buf, "MZ", 2)) ret = pe_load_dll(s1, filename); return ret; } /* ------------------------------------------------------------- */ #ifdef TCC_TARGET_X86_64 static unsigned pe_add_uwwind_info(TCCState *s1) { if (NULL == s1->uw_pdata) { s1->uw_pdata = find_section(s1, ".pdata"); s1->uw_pdata->sh_addralign = 4; } if (0 == s1->uw_sym) s1->uw_sym = put_elf_sym(symtab_section, 0, 0, 0, 0, text_section->sh_num, ".uw_base"); if (0 == s1->uw_offs) { /* As our functions all have the same stackframe, we use one entry for all */ static const unsigned char uw_info[] = { 0x01, // UBYTE: 3 Version , UBYTE: 5 Flags 0x04, // UBYTE Size of prolog 0x02, // UBYTE Count of unwind codes 0x05, // UBYTE: 4 Frame Register (rbp), UBYTE: 4 Frame Register offset (scaled) // USHORT * n Unwind codes array // 0x0b, 0x01, 0xff, 0xff, // stack size 0x04, 0x03, // set frame ptr (mov rsp -> rbp) 0x01, 0x50 // push reg (rbp) }; Section *s = text_section; unsigned char *p; section_ptr_add(s, -s->data_offset & 3); /* align */ s1->uw_offs = s->data_offset; p = section_ptr_add(s, sizeof uw_info); memcpy(p, uw_info, sizeof uw_info); } return s1->uw_offs; } ST_FUNC void pe_add_unwind_data(unsigned start, unsigned end, unsigned stack) { TCCState *s1 = tcc_state; Section *pd; unsigned o, n, d; struct /* _RUNTIME_FUNCTION */ { DWORD BeginAddress; DWORD EndAddress; DWORD UnwindData; } *p; d = pe_add_uwwind_info(s1); pd = s1->uw_pdata; o = pd->data_offset; p = section_ptr_add(pd, sizeof *p); /* record this function */ p->BeginAddress = start; p->EndAddress = end; p->UnwindData = d; /* put relocations on it */ for (n = o + sizeof *p; o < n; o += sizeof p->BeginAddress) put_elf_reloc(symtab_section, pd, o, R_XXX_RELATIVE, s1->uw_sym); } #endif /* ------------------------------------------------------------- */ #ifdef TCC_TARGET_X86_64 #define PE_STDSYM(n,s) n #else #define PE_STDSYM(n,s) "_" n s #endif static void tcc_add_support(TCCState *s1, const char *filename) { if (tcc_add_dll(s1, filename, 0) < 0) tcc_error_noabort("%s not found", filename); } static void pe_add_runtime(TCCState *s1, struct pe_info *pe) { const char *start_symbol; int pe_type = 0; int unicode_entry = 0; if (find_elf_sym(symtab_section, PE_STDSYM("WinMain","@16"))) pe_type = PE_GUI; else if (find_elf_sym(symtab_section, PE_STDSYM("wWinMain","@16"))) { pe_type = PE_GUI; unicode_entry = PE_GUI; } else if (TCC_OUTPUT_DLL == s1->output_type) { pe_type = PE_DLL; } else { pe_type = PE_EXE; if (find_elf_sym(symtab_section, "wmain")) unicode_entry = PE_EXE; } start_symbol = TCC_OUTPUT_MEMORY == s1->output_type ? PE_GUI == pe_type ? (unicode_entry ? "__runwwinmain" : "__runwinmain") : (unicode_entry ? "__runwmain" : "__runmain") : PE_DLL == pe_type ? PE_STDSYM("__dllstart","@12") : PE_GUI == pe_type ? (unicode_entry ? "__wwinstart": "__winstart") : (unicode_entry ? "__wstart" : "__start") ; if (!s1->leading_underscore || strchr(start_symbol, '@')) ++start_symbol; #ifdef CONFIG_TCC_BACKTRACE if (s1->do_backtrace) { #ifdef CONFIG_TCC_BCHECK if (s1->do_bounds_check && s1->output_type != TCC_OUTPUT_DLL) tcc_add_support(s1, "bcheck.o"); #endif if (s1->output_type == TCC_OUTPUT_EXE) tcc_add_support(s1, "bt-exe.o"); if (s1->output_type == TCC_OUTPUT_DLL) tcc_add_support(s1, "bt-dll.o"); if (s1->output_type != TCC_OUTPUT_DLL) tcc_add_support(s1, "bt-log.o"); if (s1->output_type != TCC_OUTPUT_MEMORY) tcc_add_btstub(s1); } #endif /* grab the startup code from libtcc1.a */ #ifdef TCC_IS_NATIVE if (TCC_OUTPUT_MEMORY != s1->output_type || s1->runtime_main) #endif set_global_sym(s1, start_symbol, NULL, 0); if (0 == s1->nostdlib) { static const char *libs[] = { "msvcrt", "kernel32", "", "user32", "gdi32", NULL }; const char **pp, *p; tcc_add_support(s1, TCC_LIBTCC1); for (pp = libs; 0 != (p = *pp); ++pp) { if (*p) tcc_add_library_err(s1, p); else if (PE_DLL != pe_type && PE_GUI != pe_type) break; } } /* need this for 'tccelf.c:relocate_section()' */ if (TCC_OUTPUT_DLL == s1->output_type) s1->output_type = TCC_OUTPUT_EXE; if (TCC_OUTPUT_MEMORY == s1->output_type) pe_type = PE_RUN; pe->type = pe_type; pe->start_symbol = start_symbol; } static void pe_set_options(TCCState * s1, struct pe_info *pe) { if (PE_DLL == pe->type) { /* XXX: check if is correct for arm-pe target */ pe->imagebase = 0x10000000; } else { #if defined(TCC_TARGET_ARM) pe->imagebase = 0x00010000; #else pe->imagebase = 0x00400000; #endif } #if defined(TCC_TARGET_ARM) /* we use "console" subsystem by default */ pe->subsystem = 9; #else if (PE_DLL == pe->type || PE_GUI == pe->type) pe->subsystem = 2; else pe->subsystem = 3; #endif /* Allow override via -Wl,-subsystem=... option */ if (s1->pe_subsystem != 0) pe->subsystem = s1->pe_subsystem; /* set default file/section alignment */ if (pe->subsystem == 1) { pe->section_align = 0x20; pe->file_align = 0x20; } else { pe->section_align = 0x1000; pe->file_align = 0x200; } if (s1->section_align != 0) pe->section_align = s1->section_align; if (s1->pe_file_align != 0) pe->file_align = s1->pe_file_align; if ((pe->subsystem >= 10) && (pe->subsystem <= 12)) pe->imagebase = 0; if (s1->has_text_addr) pe->imagebase = s1->text_addr; } ST_FUNC int pe_output_file(TCCState *s1, const char *filename) { int ret; struct pe_info pe; int i; memset(&pe, 0, sizeof pe); pe.filename = filename; pe.s1 = s1; #ifdef CONFIG_TCC_BCHECK tcc_add_bcheck(s1); #endif tcc_add_pragma_libs(s1); pe_add_runtime(s1, &pe); resolve_common_syms(s1); pe_set_options(s1, &pe); ret = pe_check_symbols(&pe); if (ret) ; else if (filename) { pe_assign_addresses(&pe); relocate_syms(s1, s1->symtab, 0); s1->pe_imagebase = pe.imagebase; for (i = 1; i < s1->nb_sections; ++i) { Section *s = s1->sections[i]; if (s->reloc) { relocate_section(s1, s); } } pe.start_addr = (DWORD) ((uintptr_t)tcc_get_symbol_err(s1, pe.start_symbol) - pe.imagebase); if (s1->nb_errors) ret = -1; else ret = pe_write(&pe); dynarray_reset(&pe.sec_info, &pe.sec_count); } else { #ifdef TCC_IS_NATIVE pe.thunk = data_section; pe_build_imports(&pe); s1->runtime_main = pe.start_symbol; #ifdef TCC_TARGET_X86_64 s1->uw_pdata = find_section(s1, ".pdata"); #endif #endif } pe_free_imports(&pe); #ifdef PE_PRINT_SECTIONS pe_print_sections(s1, "tcc.log"); #endif return ret; } /* ------------------------------------------------------------- */