| /* BFD back-end for Intel 386 PE IMAGE COFF files. |
| Copyright 2006, 2007, 2009 Free Software Foundation, Inc. |
| |
| This file is part of BFD, the Binary File Descriptor library. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| MA 02110-1301, USA. |
| |
| Written by Kai Tietz, OneVision Software GmbH&CoKg. */ |
| |
| #include "sysdep.h" |
| #include "bfd.h" |
| |
| #define TARGET_SYM x86_64pei_vec |
| #define TARGET_NAME "pei-x86-64" |
| #define COFF_IMAGE_WITH_PE |
| #define COFF_WITH_PE |
| #define COFF_WITH_pex64 |
| #define PCRELOFFSET TRUE |
| #if defined (USE_MINGW64_LEADING_UNDERSCORES) |
| #define TARGET_UNDERSCORE '_' |
| #else |
| #define TARGET_UNDERSCORE 0 |
| #endif |
| /* Long section names not allowed in executable images, only object files. */ |
| #define COFF_LONG_SECTION_NAMES 0 |
| #define COFF_SUPPORT_GNU_LINKONCE |
| #define COFF_LONG_FILENAMES |
| #define PDATA_ROW_SIZE (3 * 4) |
| |
| #define COFF_SECTION_ALIGNMENT_ENTRIES \ |
| { COFF_SECTION_NAME_EXACT_MATCH (".bss"), \ |
| COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \ |
| { COFF_SECTION_NAME_PARTIAL_MATCH (".data"), \ |
| COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \ |
| { COFF_SECTION_NAME_PARTIAL_MATCH (".rdata"), \ |
| COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \ |
| { COFF_SECTION_NAME_PARTIAL_MATCH (".text"), \ |
| COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \ |
| { COFF_SECTION_NAME_PARTIAL_MATCH (".idata"), \ |
| COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \ |
| { COFF_SECTION_NAME_EXACT_MATCH (".pdata"), \ |
| COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \ |
| { COFF_SECTION_NAME_PARTIAL_MATCH (".debug"), \ |
| COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \ |
| { COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi."), \ |
| COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 } |
| |
| /* Note we have to make sure not to include headers twice. |
| Not all headers are wrapped in #ifdef guards, so we define |
| PEI_HEADERS to prevent double including in coff-x86_64.c */ |
| #define PEI_HEADERS |
| #include "sysdep.h" |
| #include "bfd.h" |
| #include "libbfd.h" |
| #include "coff/x86_64.h" |
| #include "coff/internal.h" |
| #include "coff/pe.h" |
| #include "libcoff.h" |
| #include "libpei.h" |
| #include "libiberty.h" |
| |
| #undef AOUTSZ |
| #define AOUTSZ PEPAOUTSZ |
| #define PEAOUTHDR PEPAOUTHDR |
| |
| static const char *pex_regs[16] = { |
| "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi", |
| "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" |
| }; |
| |
| static void |
| pex64_get_runtime_function (bfd *abfd, struct pex64_runtime_function *rf, |
| const void *data) |
| { |
| const struct external_pex64_runtime_function *ex_rf = |
| (const struct external_pex64_runtime_function *) data; |
| rf->rva_BeginAddress = bfd_get_32 (abfd, ex_rf->rva_BeginAddress); |
| rf->rva_EndAddress = bfd_get_32 (abfd, ex_rf->rva_EndAddress); |
| rf->rva_UnwindData = bfd_get_32 (abfd, ex_rf->rva_UnwindData); |
| rf->isChained = PEX64_IS_RUNTIME_FUNCTION_CHAINED (rf); |
| rf->rva_UnwindData = PEX64_GET_UNWINDDATA_UNIFIED_RVA (rf); |
| } |
| |
| static void |
| pex64_get_unwind_info (bfd *abfd, struct pex64_unwind_info *ui, void *data) |
| { |
| struct external_pex64_unwind_info *ex_ui = |
| (struct external_pex64_unwind_info *) data; |
| bfd_byte *ex_dta = (bfd_byte *) data; |
| |
| memset (ui, 0, sizeof (struct pex64_unwind_info)); |
| ui->Version = PEX64_UWI_VERSION (ex_ui->Version_Flags); |
| ui->Flags = PEX64_UWI_FLAGS (ex_ui->Version_Flags); |
| ui->SizeOfPrologue = (bfd_vma) ex_ui->SizeOfPrologue; |
| ui->CountOfCodes = (bfd_vma) ex_ui->CountOfCodes; |
| ui->FrameRegister = PEX64_UWI_FRAMEREG (ex_ui->FrameRegisterOffset); |
| ui->FrameOffset = PEX64_UWI_FRAMEOFF (ex_ui->FrameRegisterOffset); |
| ui->sizeofUnwindCodes = PEX64_UWI_SIZEOF_UWCODE_ARRAY (ui->CountOfCodes); |
| ui->SizeOfBlock = ui->sizeofUnwindCodes + 4; |
| ui->rawUnwindCodes = &ex_dta[4]; |
| ex_dta += ui->SizeOfBlock; |
| switch (ui->Flags) |
| { |
| case UNW_FLAG_CHAININFO: |
| ui->rva_FunctionEntry = bfd_get_32 (abfd, ex_dta); |
| ui->SizeOfBlock += 4; |
| return; |
| default: |
| return; |
| } |
| } |
| |
| static void |
| pex64_xdata_print_uwd_codes (FILE *file, struct pex64_unwind_info *ui, |
| bfd_vma pc_addr) |
| { |
| bfd_vma i; |
| bfd_vma tmp = 0; |
| const bfd_byte *insns[256]; |
| bfd_vma insns_count = 0; |
| const bfd_byte *dta = ui->rawUnwindCodes; |
| |
| if (ui->CountOfCodes == 0 || !dta) |
| return; |
| |
| /* Sort array ascending. Note: it is stored in reversed order. */ |
| for (i = 0; i < ui->CountOfCodes; i++) |
| { |
| const bfd_byte *t; |
| |
| t = insns[insns_count++] = &dta[i * 2]; |
| switch (PEX64_UNWCODE_CODE (t[1])) |
| { |
| case UWOP_PUSH_NONVOL: |
| case UWOP_ALLOC_SMALL: |
| case UWOP_SET_FPREG: |
| case UWOP_PUSH_MACHFRAME: |
| break; |
| case UWOP_ALLOC_LARGE: |
| if (PEX64_UNWCODE_INFO (t[1]) == 0) |
| { |
| i += 1; |
| break; |
| } |
| else if (PEX64_UNWCODE_INFO (t[1]) == 1) |
| { |
| i += 2; |
| break; |
| } |
| /* fall through. */ |
| default: |
| fprintf (file, "\t contains unknown code (%u).\n", |
| (unsigned int) PEX64_UNWCODE_CODE (t[1])); |
| return; |
| case UWOP_SAVE_NONVOL: |
| case UWOP_SAVE_XMM: |
| case UWOP_SAVE_XMM128: |
| i++; |
| break; |
| case UWOP_SAVE_NONVOL_FAR: |
| case UWOP_SAVE_XMM_FAR: |
| case UWOP_SAVE_XMM128_FAR: |
| i += 2; |
| break; |
| } |
| } |
| fprintf (file, "\t At pc 0x"); |
| fprintf_vma (file, pc_addr); |
| fprintf (file, " there are the following saves (in logical order).\n"); |
| for (i = insns_count; i > 0;) |
| { |
| --i; |
| dta = insns[i]; |
| fprintf (file, "\t insn ends at pc+0x%02x: ", (unsigned int) dta[0]); |
| switch (PEX64_UNWCODE_CODE (dta[1])) |
| { |
| case UWOP_PUSH_NONVOL: |
| fprintf (file, "push %s.\n", pex_regs[PEX64_UNWCODE_INFO (dta[1])]); |
| break; |
| case UWOP_ALLOC_LARGE: |
| if (PEX64_UNWCODE_INFO (dta[1]) == 0) |
| { |
| tmp = (bfd_vma) (*((unsigned short *) &dta[2])); |
| tmp *= 8; |
| } |
| else |
| tmp = (bfd_vma) (*((unsigned int *)&dta[2])); |
| fprintf (file, "save stack region of size 0x"); |
| fprintf_vma (file, tmp); |
| fprintf (file,".\n"); |
| break; |
| case UWOP_ALLOC_SMALL: |
| tmp = (bfd_vma) PEX64_UNWCODE_INFO (dta[1]); |
| tmp += 1; |
| tmp *= 8; |
| fprintf (file, "save stack region of size 0x"); |
| fprintf_vma (file, tmp); |
| fprintf (file,".\n"); |
| break; |
| case UWOP_SET_FPREG: |
| tmp = (bfd_vma) PEX64_UNWCODE_INFO (dta[1]); |
| tmp *= 16; |
| fprintf (file, "FPReg = (FrameReg) + 0x"); |
| fprintf_vma (file, tmp); |
| fprintf (file, ".\n"); |
| break; |
| case UWOP_SAVE_NONVOL: |
| fprintf (file, "mov %s at 0x", |
| pex_regs[PEX64_UNWCODE_INFO (dta[1])]); |
| tmp = (bfd_vma) (*((unsigned short *) &dta[2])); |
| tmp *= 8; |
| fprintf_vma (file, tmp); |
| fprintf (file, ".\n"); |
| break; |
| case UWOP_SAVE_NONVOL_FAR: |
| fprintf (file, "mov %s at 0x", |
| pex_regs[PEX64_UNWCODE_INFO (dta[1])]); |
| tmp = (bfd_vma) (*((unsigned int *) &dta[2])); |
| fprintf_vma (file, tmp); |
| fprintf (file, ".\n"); |
| break; |
| case UWOP_SAVE_XMM: |
| tmp = (bfd_vma) (*((unsigned short *) &dta[2])); |
| tmp *= 8; |
| fprintf (file, "mov mm%u at 0x", |
| (unsigned int) PEX64_UNWCODE_INFO (dta[1])); |
| fprintf_vma (file, tmp); |
| fprintf (file, ".\n"); |
| break; |
| case UWOP_SAVE_XMM_FAR: |
| tmp = (bfd_vma) (*((unsigned int *) &dta[2])); |
| fprintf (file, "mov mm%u at 0x", |
| (unsigned int) PEX64_UNWCODE_INFO (dta[1])); |
| fprintf_vma (file, tmp); |
| fprintf (file, ".\n"); |
| break; |
| case UWOP_SAVE_XMM128: |
| tmp = (bfd_vma) (*((unsigned short *) &dta[2])); |
| tmp *= 16; |
| fprintf (file, "mov xmm%u at 0x", |
| (unsigned int) PEX64_UNWCODE_INFO ( dta[1])); |
| fprintf_vma (file, tmp); |
| fprintf (file, ".\n"); |
| break; |
| case UWOP_SAVE_XMM128_FAR: |
| tmp = (bfd_vma) (*((unsigned int *) &dta[2])); |
| fprintf (file, "mov xmm%u at 0x", |
| (unsigned int) PEX64_UNWCODE_INFO (dta[1])); |
| fprintf_vma (file, tmp); |
| fprintf (file, ".\n"); |
| break; |
| case UWOP_PUSH_MACHFRAME: |
| fprintf (file, "interrupt entry (SS, old RSP, EFLAGS, CS, RIP"); |
| if (PEX64_UNWCODE_INFO (dta[1]) == 0) |
| { |
| fprintf (file, ")"); |
| } |
| else if (PEX64_UNWCODE_INFO (dta[1]) == 1) |
| { |
| fprintf (file, ",ErrorCode)"); |
| } |
| else |
| fprintf (file, ", unknown(%u))", |
| (unsigned int) PEX64_UNWCODE_INFO (dta[1])); |
| fprintf (file,".\n"); |
| break; |
| default: |
| fprintf (file, "unknown code %u.\n", |
| (unsigned int) PEX64_UNWCODE_INFO (dta[1])); |
| break; |
| } |
| } |
| } |
| |
| static asection * |
| pex64_get_section_by_rva (bfd *abfd, bfd_vma addr, const char *sec_name) |
| { |
| asection *section = bfd_get_section_by_name (abfd, sec_name); |
| bfd_vma vsize; |
| bfd_size_type datasize = 0; |
| |
| if (section == NULL |
| || coff_section_data (abfd, section) == NULL |
| || pei_section_data (abfd, section) == NULL) |
| return NULL; |
| vsize = section->vma - pe_data (abfd)->pe_opthdr.ImageBase; |
| datasize = section->size; |
| if (!datasize || vsize > addr || (vsize + datasize) < addr) |
| return NULL; |
| return section; |
| } |
| |
| static void |
| pex64_dump_xdata (FILE *file, bfd *abfd, bfd_vma addr, bfd_vma pc_addr, |
| bfd_vma *endx) |
| { |
| asection *section = pex64_get_section_by_rva (abfd, addr, ".rdata"); |
| bfd_vma vsize; |
| bfd_byte *data = NULL; |
| bfd_vma end_addr; |
| |
| if (!section) |
| section = pex64_get_section_by_rva (abfd, addr, ".data"); |
| if (!section) |
| section = pex64_get_section_by_rva (abfd, addr, ".xdata"); |
| if (!section) |
| { |
| section = pex64_get_section_by_rva (abfd, addr, ".pdata"); |
| if (section) |
| { |
| fprintf (file, "\t Shares information with pdata element at 0x"); |
| fprintf_vma (file, addr + pe_data (abfd)->pe_opthdr.ImageBase); |
| fprintf (file, ".\n"); |
| } |
| } |
| if (!section) |
| return; |
| |
| vsize = section->vma - pe_data (abfd)->pe_opthdr.ImageBase; |
| addr -= vsize; |
| |
| if (endx) |
| end_addr = endx[0] - vsize; |
| else |
| end_addr = (section->rawsize != 0 ? section->rawsize : section->size); |
| |
| if (bfd_malloc_and_get_section (abfd, section, &data)) |
| { |
| struct pex64_unwind_info ui; |
| |
| if (!data) |
| return; |
| |
| pex64_get_unwind_info (abfd, &ui, &data[addr]); |
| |
| if (ui.Version != 1) |
| { |
| fprintf (file, "\tVersion %u (unknown).\n", (unsigned int) ui.Version); |
| return; |
| } |
| |
| fprintf (file, "\tFlags: "); |
| switch (ui.Flags) |
| { |
| case UNW_FLAG_NHANDLER: |
| fprintf (file, "UNW_FLAG_NHANDLER"); |
| break; |
| case UNW_FLAG_EHANDLER: |
| fprintf (file, "UNW_FLAG_EHANDLER"); |
| break; |
| case UNW_FLAG_UHANDLER: |
| fprintf (file, "UNW_FLAG_UHANDLER"); |
| break; |
| case UNW_FLAG_FHANDLER: |
| fprintf (file, "UNW_FLAG_FHANDLER = (UNW_FLAG_EHANDLER | UNW_FLAG_UHANDLER)"); |
| break; |
| case UNW_FLAG_CHAININFO: |
| fprintf (file, "UNW_FLAG_CHAININFO"); |
| break; |
| default: |
| fprintf (file, "unknown flags value 0x%x", (unsigned int) ui.Flags); |
| break; |
| } |
| fprintf (file, ".\n"); |
| if (ui.CountOfCodes != 0) |
| fprintf (file, "\tEntry has %u codes.", (unsigned int) ui.CountOfCodes); |
| fprintf (file, "\tPrologue size: %u, Frame offset = 0x%x.\n", |
| (unsigned int) ui.SizeOfPrologue, (unsigned int) ui.FrameOffset); |
| fprintf (file, "\tFrame register is %s.\n", |
| ui.FrameRegister == 0 ? "none" |
| : pex_regs[(unsigned int) ui.FrameRegister]); |
| |
| pex64_xdata_print_uwd_codes (file, &ui, pc_addr); |
| |
| /* Now we need end of this xdata block. */ |
| addr += ui.SizeOfBlock; |
| if (addr < end_addr) |
| { |
| unsigned int i; |
| fprintf (file,"\tUser data:\n"); |
| for (i = 0; addr < end_addr; addr += 1, i++) |
| { |
| if ((i & 15) == 0) |
| fprintf (file, "\t %03x:", i); |
| fprintf (file, " %02x", data[addr]); |
| if ((i & 15) == 15) |
| fprintf (file, "\n"); |
| } |
| if ((i & 15) != 0) |
| fprintf (file, "\n"); |
| } |
| } |
| if (data != NULL) |
| free (data); |
| } |
| |
| static int |
| sort_xdata_arr (const void *l, const void *r) |
| { |
| const bfd_vma *lp = (const bfd_vma *) l; |
| const bfd_vma *rp = (const bfd_vma *) r; |
| |
| if (*lp == *rp) |
| return 0; |
| return (*lp < *rp ? -1 : 1); |
| } |
| |
| static bfd_boolean |
| pex64_bfd_print_pdata (bfd *abfd, void *vfile) |
| { |
| FILE *file = (FILE *) vfile; |
| bfd_byte *data = NULL; |
| asection *section = bfd_get_section_by_name (abfd, ".pdata"); |
| bfd_size_type datasize = 0; |
| bfd_size_type i; |
| bfd_size_type stop; |
| bfd_vma prev_beginaddress = 0; |
| int onaline = PDATA_ROW_SIZE; |
| int seen_error = 0; |
| bfd_vma *xdata_arr; |
| int xdata_arr_cnt; |
| |
| if (section == NULL |
| || coff_section_data (abfd, section) == NULL |
| || pei_section_data (abfd, section) == NULL) |
| return TRUE; |
| |
| stop = pei_section_data (abfd, section)->virt_size; |
| if ((stop % onaline) != 0) |
| fprintf (file, |
| _("warning: .pdata section size (%ld) is not a multiple of %d\n"), |
| (long) stop, onaline); |
| |
| fprintf (file, |
| _("\nThe Function Table (interpreted .pdata section contents)\n")); |
| |
| fprintf (file, _("vma:\t\t\tBeginAddress\t EndAddress\t UnwindData\n")); |
| |
| datasize = section->size; |
| if (datasize == 0) |
| return TRUE; |
| |
| if (!bfd_malloc_and_get_section (abfd, section, &data)) |
| { |
| if (data != NULL) |
| free (data); |
| return FALSE; |
| } |
| |
| xdata_arr = (bfd_vma *) xmalloc (sizeof (bfd_vma) * ((stop / onaline) + 1)); |
| xdata_arr_cnt = 0; |
| /* Do sanity check of pdata. */ |
| for (i = 0; i < stop; i += onaline) |
| { |
| struct pex64_runtime_function rf; |
| |
| if (i + PDATA_ROW_SIZE > stop) |
| break; |
| pex64_get_runtime_function (abfd, &rf, &data[i]); |
| |
| if (rf.rva_BeginAddress == 0 && rf.rva_EndAddress == 0 |
| && rf.rva_UnwindData == 0) |
| /* We are probably into the padding of the section now. */ |
| break; |
| fputc (' ', file); |
| fprintf_vma (file, i + section->vma); |
| fprintf (file, ":\t"); |
| fprintf_vma (file, rf.rva_BeginAddress); |
| fputc (' ', file); |
| fprintf_vma (file, rf.rva_EndAddress); |
| fputc (' ', file); |
| fprintf_vma (file, rf.rva_UnwindData); |
| fprintf (file, "\n"); |
| if (i != 0 && rf.rva_BeginAddress <= prev_beginaddress) |
| { |
| seen_error = 1; |
| fprintf (file, " has %s begin address as predecessor\n", |
| (rf.rva_BeginAddress < prev_beginaddress ? "smaller" : "same")); |
| } |
| prev_beginaddress = rf.rva_BeginAddress; |
| /* Now we check for negative addresses. */ |
| if ((prev_beginaddress & 0x80000000) != 0) |
| { |
| seen_error = 1; |
| fprintf (file, " has negative begin address\n"); |
| } |
| if ((rf.rva_EndAddress & 0x80000000) != 0) |
| { |
| seen_error = 1; |
| fprintf (file, " has negative end address\n"); |
| } |
| if ((rf.rva_UnwindData & 0x80000000) != 0) |
| { |
| seen_error = 1; |
| fprintf (file, " has negative unwind address\n"); |
| } |
| if (rf.rva_UnwindData && !rf.isChained) |
| xdata_arr[xdata_arr_cnt++] = rf.rva_UnwindData; |
| } |
| |
| if (seen_error) |
| { |
| free (data); |
| free (xdata_arr); |
| |
| return TRUE; |
| } |
| |
| /* Add end of list marker. */ |
| xdata_arr[xdata_arr_cnt++] = ~((bfd_vma) 0); |
| |
| /* Sort start RVAs of xdata. */ |
| if (xdata_arr_cnt > 1) |
| qsort (xdata_arr, (size_t) xdata_arr_cnt, sizeof (bfd_vma), |
| sort_xdata_arr); |
| |
| /* Do dump of pdata related xdata. */ |
| |
| for (i = 0; i < stop; i += onaline) |
| { |
| struct pex64_runtime_function rf; |
| |
| if (i + PDATA_ROW_SIZE > stop) |
| break; |
| pex64_get_runtime_function (abfd, &rf, &data[i]); |
| |
| if (rf.rva_BeginAddress == 0 && rf.rva_EndAddress == 0 |
| && rf.rva_UnwindData == 0) |
| /* We are probably into the padding of the section now. */ |
| break; |
| if (i == 0) |
| fprintf (file, "\nDump of .xdata\n"); |
| fputc (' ', file); |
| fprintf_vma (file, rf.rva_UnwindData); |
| fprintf (file, ":\n"); |
| |
| rf.rva_BeginAddress += pe_data (abfd)->pe_opthdr.ImageBase; |
| rf.rva_EndAddress += pe_data (abfd)->pe_opthdr.ImageBase; |
| |
| if (rf.rva_UnwindData != 0) |
| { |
| if (rf.isChained) |
| { |
| fprintf (file, "\t shares information with pdata element at 0x"); |
| fprintf_vma (file, rf.rva_UnwindData); |
| fprintf (file, ".\n"); |
| } |
| else |
| { |
| bfd_vma *p; |
| |
| /* Search for the current entry in the sorted array. */ |
| p = (bfd_vma *) |
| bsearch (&rf.rva_UnwindData, xdata_arr, |
| (size_t) xdata_arr_cnt, sizeof (bfd_vma), |
| sort_xdata_arr); |
| |
| /* Advance to the next pointer into the xdata section. We may |
| have shared xdata entries, which will result in a string of |
| identical pointers in the array; advance past all of them. */ |
| while (p[0] <= rf.rva_UnwindData) |
| ++p; |
| if (p[0] == ~((bfd_vma) 0)) |
| p = NULL; |
| |
| pex64_dump_xdata (file, abfd, rf.rva_UnwindData, |
| rf.rva_BeginAddress, p); |
| } |
| } |
| } |
| |
| free (data); |
| free (xdata_arr); |
| |
| return TRUE; |
| } |
| |
| #define bfd_pe_print_pdata pex64_bfd_print_pdata |
| |
| #include "coff-x86_64.c" |