diff options
Diffstat (limited to 'tccpe.c')
| -rw-r--r-- | tccpe.c | 1996 |
1 files changed, 1996 insertions, 0 deletions
@@ -0,0 +1,1996 @@ +/* + * 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 <sys/stat.h> /* 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 + +#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 */ + +/* +#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 +*/ + +enum { + sec_text = 0, + sec_data , + sec_bss , + sec_idata , + sec_pdata , + sec_other , + sec_rsrc , + sec_stab , + sec_reloc , + sec_last +}; + +static const DWORD pe_sec_flags[] = { + 0x60000020, /* ".text" , */ + 0xC0000040, /* ".data" , */ + 0xC0000080, /* ".bss" , */ + 0x40000040, /* ".idata" , */ + 0x40000040, /* ".pdata" , */ + 0xE0000060, /* < other > , */ + 0x40000040, /* ".rsrc" , */ + 0x42000802, /* ".stab" , */ + 0x42000040, /* ".reloc" , */ +}; + +struct section_info { + int cls, ord; + char name[32]; + DWORD sh_addr; + DWORD sh_size; + DWORD sh_flags; + unsigned char *data; + 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; +} + +#if 0 +ST_FN DWORD umin(DWORD a, DWORD b) +{ + return a < b ? a : b; +} +#endif + +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; +} + +static int pe_fwrite(void *data, unsigned len, FILE *fp, DWORD *psum) +{ + if (psum) { + DWORD sum = *psum; + WORD *p = data; + int i; + for (i = len; i > 0; i -= 2) { + sum += (i >= 2) ? *p++ : *(BYTE*)p; + sum = (sum + (sum >> 16)) & 0xFFFF; + } + *psum = sum; + } + return len == fwrite(data, 1, len, fp) ? 0 : -1; +} + +static void pe_fpad(FILE *fp, DWORD new_pos) +{ + DWORD pos = ftell(fp); + while (++pos <= new_pos) + fputc(0, fp); +} + +/*----------------------------------------------------------------------------*/ +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; + FILE *op; + DWORD file_offset, sum; + struct section_info *si; + IMAGE_SECTION_HEADER *psh; + + op = fopen(pe->filename, "wb"); + if (NULL == 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: + pe_header.opthdr.BaseOfCode = addr; + break; + + case sec_data: +#ifndef TCC_TARGET_X86_64 + 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; + + case sec_stab: + break; + } + + if (pe->thunk == pe->s1->sections[si->ord]) { + if (pe->imp_size) { + pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IMPORT, + pe->imp_offs + addr, pe->imp_size); + pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IAT, + pe->iat_offs + addr, pe->iat_size); + } + if (pe->exp_size) { + pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_EXPORT, + pe->exp_offs + addr, pe->exp_size); + } + } + + strncpy((char*)psh->Name, sh_name, sizeof psh->Name); + + psh->Characteristics = pe_sec_flags[si->cls]; + 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; + + sum = 0; + pe_fwrite(&pe_header, sizeof pe_header, op, &sum); + for (i = 0; i < pe->sec_count; ++i) + pe_fwrite(&pe->sec_info[i].ish, sizeof(IMAGE_SECTION_HEADER), op, &sum); + pe_fpad(op, pe->sizeofheaders); + for (i = 0; i < pe->sec_count; ++i) { + si = pe->sec_info + i; + psh = &si->ish; + if (si->data_size) { + pe_fwrite(si->data, si->data_size, op, &sum); + file_offset = psh->PointerToRawData + psh->SizeOfRawData; + pe_fpad(op, file_offset); + } + } + + pe_header.opthdr.CheckSum = sum + file_offset; + fseek(op, offsetof(struct pe_header, opthdr.CheckSum), SEEK_SET); + pe_fwrite(&pe_header.opthdr.CheckSum, sizeof pe_header.opthdr.CheckSum, op, NULL); + fclose (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; + + 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_offs = dll_ptr = pe->thunk->data_offset; + pe->imp_size = (ndlls + 1) * sizeof(IMAGE_IMPORT_DESCRIPTOR); + pe->iat_offs = dll_ptr + pe->imp_size; + pe->iat_size = (sym_cnt + ndlls) * sizeof(ADDR3264); + section_ptr_add(pe->thunk, pe->imp_size + 2*pe->iat_size); + + thk_ptr = pe->iat_offs; + ent_ptr = pe->iat_offs + 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, func_o, name_o, ord_o, str_o; + IMAGE_EXPORT_DIRECTORY *hdr; + int sym_count, ord; + struct pe_sort_sym **sorted, *p; + + 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); + + pe->exp_offs = pe->thunk->data_offset; + func_o = pe->exp_offs + 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 - pe->exp_offs); + 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 <output-filename>.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_size = pe->thunk->data_offset - pe->exp_offs; + dynarray_reset(&sorted, &sym_count); + if (op) + fclose(op); +} + +/* ------------------------------------------------------------- */ +static void pe_build_reloc (struct pe_info *pe) +{ + DWORD offset, block_ptr, addr; + int count, i; + ElfW_Rel *rel, *rel_end; + Section *s = NULL, *sr; + + offset = addr = 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 + s->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 (i < pe->sec_count) { + sr = (s = pe->s1->sections[pe->sec_info[i++].ord])->reloc; + if (sr) { + rel = (ElfW_Rel *)sr->data; + rel_end = (ElfW_Rel *)(sr->data + sr->data_offset); + } + continue; + } + + if (count) { + /* store the last block and ready for a new one */ + struct pe_reloc_header *hdr; + 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; + } + + if (rel >= rel_end) + break; + } +} + +/* ------------------------------------------------------------- */ +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; + return sec_other; + } else if (type == SHT_NOBITS) { + if (flags & SHF_WRITE) + return sec_bss; + } + } else { + if (0 == strcmp(name, ".reloc")) + return sec_reloc; + if (0 == strncmp(name, ".stab", 5)) /* .stab and .stabstr */ + return sec_stab; + } + 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)) { + // printf("%s %d\n", s->name, k); + s->sh_addr = pe->imagebase; + section_order[o++] = i; + } + } + } + + pe->sec_info = tcc_mallocz(o * sizeof (struct section_info)); + addr = pe->imagebase + 1; + + for (i = 0; i < o; ++i) + { + k = section_order[i]; + s = pe->s1->sections[k]; + c = pe_section_class(s); + si = &pe->sec_info[pe->sec_count]; + +#ifdef PE_MERGE_DATA + if (c == sec_bss && pe->sec_count && si[-1].cls == sec_data) { + /* append .bss to .data */ + s->sh_addr = addr = ((addr-1) | (s->sh_addralign-1)) + 1; + addr += s->data_offset; + si[-1].sh_size = addr - si[-1].sh_addr; + continue; + } +#endif + if (c == sec_stab && 0 == pe->s1->do_debug) + continue; + + strcpy(si->name, s->name); + si->cls = c; + si->ord = k; + si->sh_addr = s->sh_addr = addr = pe_virtual_align(pe, addr); + si->sh_flags = s->sh_flags; + + if (c == sec_data && NULL == pe->thunk) + pe->thunk = s; + + if (s == pe->thunk) { + pe_build_imports(pe); + pe_build_exports(pe); + } + + if (c == sec_reloc) + pe_build_reloc (pe); + + if (s->data_offset) + { + if (s->sh_type != SHT_NOBITS) { + si->data = s->data; + si->data_size = s->data_offset; + } + + addr += s->data_offset; + si->sh_size = s->data_offset; + ++pe->sec_count; + } + // printf("%08x %05x %s\n", si->sh_addr, si->sh_size, si->name); + } + +#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 %5x %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->data_offset, + flags & SHF_ALLOC ? "alloc" : "", + flags & SHF_WRITE ? "write" : "", + flags & SHF_EXECINSTR ? "exec" : "" + ); + } + pe->s1->verbose = 2; +#endif + + tcc_free(section_order); + return 0; +} + +/*----------------------------------------------------------------------------*/ + +static int pe_isafunc(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; + + 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(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\220", 4)) + 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(tcc_state, ".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 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; + /* need this for 'tccelf.c:relocate_section()' */ + s1->output_type = TCC_OUTPUT_EXE; + } + 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; + + /* grab the startup code from libtcc1 */ +#ifdef TCC_IS_NATIVE + if (TCC_OUTPUT_MEMORY != s1->output_type || s1->runtime_main) +#endif + set_elf_sym(symtab_section, + 0, 0, + ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0, + SHN_UNDEF, start_symbol); + + tcc_add_pragma_libs(s1); + + if (0 == s1->nostdlib) { + static const char *libs[] = { + TCC_LIBTCC1, "msvcrt", "kernel32", "", "user32", "gdi32", NULL + }; + const char **pp, *p; + for (pp = libs; 0 != (p = *pp); ++pp) { + if (0 == *p) { + if (PE_DLL != pe_type && PE_GUI != pe_type) + break; + } else if (pp == libs && tcc_add_dll(s1, p, 0) >= 0) { + continue; + } else { + tcc_add_library_err(s1, p); + } + } + } + + 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; + + tcc_add_bcheck(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); + tcc_free(pe.sec_info); + } 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; +} + +/* ------------------------------------------------------------- */ |