| /* BFD back-end for Intel 386 PE IMAGE COFF files. |
| Copyright (C) 2006-2024 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_64_pei_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 } |
| |
| #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 |
| |
| /* Name of registers according to SEH conventions. */ |
| |
| static const char * const pex_regs[16] = { |
| "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi", |
| "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" |
| }; |
| |
| /* Swap in a runtime function. */ |
| |
| 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); |
| } |
| |
| /* Swap in unwind info header. */ |
| |
| static bool |
| pex64_get_unwind_info (bfd *abfd, struct pex64_unwind_info *ui, |
| void *data, void *data_end) |
| { |
| struct external_pex64_unwind_info *ex_ui = |
| (struct external_pex64_unwind_info *) data; |
| bfd_byte *ex_dta = (bfd_byte *) data; |
| bfd_byte *ex_dta_end = (bfd_byte *) data_end; |
| |
| memset (ui, 0, sizeof (struct pex64_unwind_info)); |
| |
| if (ex_dta_end - ex_dta < 4) |
| return false; |
| |
| 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; |
| ui->rawUnwindCodesEnd = ex_dta_end; |
| |
| if ((size_t) (ex_dta_end - ex_dta) < ui->SizeOfBlock) |
| return false; |
| ex_dta += ui->SizeOfBlock; |
| |
| switch (ui->Flags) |
| { |
| case UNW_FLAG_CHAININFO: |
| if (ex_dta_end - ex_dta < 12) |
| return false; |
| ui->rva_BeginAddress = bfd_get_32 (abfd, ex_dta + 0); |
| ui->rva_EndAddress = bfd_get_32 (abfd, ex_dta + 4); |
| ui->rva_UnwindData = bfd_get_32 (abfd, ex_dta + 8); |
| ui->SizeOfBlock += 12; |
| return true; |
| case UNW_FLAG_EHANDLER: |
| case UNW_FLAG_UHANDLER: |
| case UNW_FLAG_FHANDLER: |
| if (ex_dta_end - ex_dta < 4) |
| return false; |
| ui->rva_ExceptionHandler = bfd_get_32 (abfd, ex_dta); |
| ui->SizeOfBlock += 4; |
| return true; |
| default: |
| return true; |
| } |
| } |
| |
| /* Display unwind codes. */ |
| |
| static void |
| pex64_xdata_print_uwd_codes (FILE *file, bfd *abfd, |
| struct pex64_unwind_info *ui, |
| struct pex64_runtime_function *rf) |
| { |
| unsigned int i; |
| unsigned int tmp; /* At least 32 bits. */ |
| int save_allowed; |
| |
| if (ui->CountOfCodes == 0 || ui->rawUnwindCodes == NULL) |
| return; |
| |
| /* According to UNWIND_CODE documentation: |
| If an FP reg is used, the any unwind code taking an offset must only be |
| used after the FP reg is established in the prolog. |
| But there are counter examples of that in system dlls... */ |
| save_allowed = true; |
| |
| i = 0; |
| |
| if ((size_t) (ui->rawUnwindCodesEnd - ui->rawUnwindCodes) |
| < ui->CountOfCodes * 2) |
| { |
| fprintf (file, _("warning: corrupt unwind data\n")); |
| return; |
| } |
| |
| if (ui->Version == 2 |
| && PEX64_UNWCODE_CODE (ui->rawUnwindCodes[1]) == UWOP_EPILOG) |
| { |
| /* Display epilog opcode (whose docoding is not fully documented). |
| Looks to be designed to speed-up unwinding, as there is no need |
| to decode instruction flow if outside an epilog. */ |
| unsigned int func_size = rf->rva_EndAddress - rf->rva_BeginAddress; |
| |
| fprintf (file, "\tv2 epilog (length: %02x) at pc+:", |
| ui->rawUnwindCodes[0]); |
| |
| if (PEX64_UNWCODE_INFO (ui->rawUnwindCodes[1])) |
| fprintf (file, " 0x%x", func_size - ui->rawUnwindCodes[0]); |
| |
| i++; |
| for (; i < ui->CountOfCodes; i++) |
| { |
| const bfd_byte *dta = ui->rawUnwindCodes + 2 * i; |
| unsigned int off; |
| |
| if (PEX64_UNWCODE_CODE (dta[1]) != UWOP_EPILOG) |
| break; |
| off = dta[0] | (PEX64_UNWCODE_INFO (dta[1]) << 8); |
| if (off == 0) |
| fprintf (file, " [pad]"); |
| else |
| fprintf (file, " 0x%x", func_size - off); |
| } |
| fputc ('\n', file); |
| } |
| |
| for (; i < ui->CountOfCodes; i++) |
| { |
| const bfd_byte *dta = ui->rawUnwindCodes + 2 * i; |
| unsigned int info = PEX64_UNWCODE_INFO (dta[1]); |
| int unexpected = false; |
| |
| fprintf (file, "\t pc+0x%02x: ", (unsigned int) dta[0]); |
| |
| switch (PEX64_UNWCODE_CODE (dta[1])) |
| { |
| case UWOP_PUSH_NONVOL: |
| fprintf (file, "push %s", pex_regs[info]); |
| break; |
| |
| case UWOP_ALLOC_LARGE: |
| if (info == 0) |
| { |
| if (ui->rawUnwindCodesEnd - dta < 4) |
| { |
| fprintf (file, _("warning: corrupt unwind data\n")); |
| return; |
| } |
| tmp = bfd_get_16 (abfd, dta + 2) * 8; |
| i++; |
| } |
| else |
| { |
| if (ui->rawUnwindCodesEnd - dta < 6) |
| { |
| fprintf (file, _("warning: corrupt unwind data\n")); |
| return; |
| } |
| tmp = bfd_get_32 (abfd, dta + 2); |
| i += 2; |
| } |
| fprintf (file, "alloc large area: rsp = rsp - 0x%x", tmp); |
| break; |
| |
| case UWOP_ALLOC_SMALL: |
| fprintf (file, "alloc small area: rsp = rsp - 0x%x", (info + 1) * 8); |
| break; |
| |
| case UWOP_SET_FPREG: |
| /* According to the documentation, info field is unused. */ |
| fprintf (file, "FPReg: %s = rsp + 0x%x (info = 0x%x)", |
| pex_regs[ui->FrameRegister], |
| (unsigned int) ui->FrameOffset * 16, info); |
| unexpected = ui->FrameRegister == 0; |
| save_allowed = false; |
| break; |
| |
| case UWOP_SAVE_NONVOL: |
| if (ui->rawUnwindCodesEnd - dta < 4) |
| { |
| fprintf (file, _("warning: corrupt unwind data\n")); |
| return; |
| } |
| tmp = bfd_get_16 (abfd, dta + 2) * 8; |
| i++; |
| fprintf (file, "save %s at rsp + 0x%x", pex_regs[info], tmp); |
| unexpected = !save_allowed; |
| break; |
| |
| case UWOP_SAVE_NONVOL_FAR: |
| if (ui->rawUnwindCodesEnd - dta < 6) |
| { |
| fprintf (file, _("warning: corrupt unwind data\n")); |
| return; |
| } |
| tmp = bfd_get_32 (abfd, dta + 2); |
| i += 2; |
| fprintf (file, "save %s at rsp + 0x%x", pex_regs[info], tmp); |
| unexpected = !save_allowed; |
| break; |
| |
| case UWOP_SAVE_XMM: |
| if (ui->Version == 1) |
| { |
| if (ui->rawUnwindCodesEnd - dta < 4) |
| { |
| fprintf (file, _("warning: corrupt unwind data\n")); |
| return; |
| } |
| tmp = bfd_get_16 (abfd, dta + 2) * 8; |
| i++; |
| fprintf (file, "save mm%u at rsp + 0x%x", info, tmp); |
| unexpected = !save_allowed; |
| } |
| else if (ui->Version == 2) |
| { |
| fprintf (file, "epilog %02x %01x", dta[0], info); |
| unexpected = true; |
| } |
| break; |
| |
| case UWOP_SAVE_XMM_FAR: |
| if (ui->rawUnwindCodesEnd - dta < 6) |
| { |
| fprintf (file, _("warning: corrupt unwind data\n")); |
| return; |
| } |
| tmp = bfd_get_32 (abfd, dta + 2) * 8; |
| i += 2; |
| fprintf (file, "save mm%u at rsp + 0x%x", info, tmp); |
| unexpected = !save_allowed; |
| break; |
| |
| case UWOP_SAVE_XMM128: |
| if (ui->rawUnwindCodesEnd - dta < 4) |
| { |
| fprintf (file, _("warning: corrupt unwind data\n")); |
| return; |
| } |
| tmp = bfd_get_16 (abfd, dta + 2) * 16; |
| i++; |
| fprintf (file, "save xmm%u at rsp + 0x%x", info, tmp); |
| unexpected = !save_allowed; |
| break; |
| |
| case UWOP_SAVE_XMM128_FAR: |
| if (ui->rawUnwindCodesEnd - dta < 6) |
| { |
| fprintf (file, _("warning: corrupt unwind data\n")); |
| return; |
| } |
| tmp = bfd_get_32 (abfd, dta + 2) * 16; |
| i += 2; |
| fprintf (file, "save xmm%u at rsp + 0x%x", info, tmp); |
| unexpected = !save_allowed; |
| break; |
| |
| case UWOP_PUSH_MACHFRAME: |
| fprintf (file, "interrupt entry (SS, old RSP, EFLAGS, CS, RIP"); |
| if (info == 0) |
| fprintf (file, ")"); |
| else if (info == 1) |
| fprintf (file, ",ErrorCode)"); |
| else |
| fprintf (file, ", unknown(%u))", info); |
| break; |
| |
| default: |
| /* PR 17512: file: 2245-7442-0.004. */ |
| fprintf (file, _("Unknown: %x"), PEX64_UNWCODE_CODE (dta[1])); |
| break; |
| } |
| |
| if (unexpected) |
| fprintf (file, " [Unexpected!]"); |
| fputc ('\n', file); |
| } |
| } |
| |
| /* Check wether section SEC_NAME contains the xdata at address ADDR. */ |
| |
| 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; |
| } |
| |
| /* Dump xdata at for function RF to FILE. The argument XDATA_SECTION |
| designate the bfd section containing the xdata, XDATA is its content, |
| and ENDX the size if known (or NULL). */ |
| |
| static void |
| pex64_dump_xdata (FILE *file, bfd *abfd, |
| asection *xdata_section, bfd_byte *xdata, bfd_vma *endx, |
| struct pex64_runtime_function *rf) |
| { |
| bfd_vma vaddr; |
| bfd_vma end_addr; |
| bfd_vma addr = rf->rva_UnwindData; |
| bfd_size_type sec_size = xdata_section->rawsize > 0 ? xdata_section->rawsize : xdata_section->size; |
| struct pex64_unwind_info ui; |
| |
| vaddr = xdata_section->vma - pe_data (abfd)->pe_opthdr.ImageBase; |
| addr -= vaddr; |
| |
| /* PR 17512: file: 2245-7442-0.004. */ |
| if (addr >= sec_size) |
| { |
| fprintf (file, _("warning: xdata section corrupt\n")); |
| return; |
| } |
| |
| if (endx) |
| { |
| end_addr = endx[0] - vaddr; |
| /* PR 17512: file: 2245-7442-0.004. */ |
| if (end_addr > sec_size) |
| { |
| fprintf (file, _("warning: xdata section corrupt\n")); |
| end_addr = sec_size; |
| } |
| } |
| else |
| end_addr = sec_size; |
| |
| if (! pex64_get_unwind_info (abfd, &ui, xdata + addr, xdata + end_addr)) |
| { |
| fprintf (file, _("warning: xdata section corrupt\n")); |
| return; |
| } |
| |
| if (ui.Version != 1 && ui.Version != 2) |
| { |
| unsigned int i; |
| fprintf (file, "\tVersion %u (unknown).\n", |
| (unsigned int) ui.Version); |
| for (i = 0; addr < end_addr; addr += 1, i++) |
| { |
| if ((i & 15) == 0) |
| fprintf (file, "\t %03x:", i); |
| fprintf (file, " %02x", xdata[addr]); |
| if ((i & 15) == 15) |
| fprintf (file, "\n"); |
| } |
| if ((i & 15) != 0) |
| fprintf (file, "\n"); |
| return; |
| } |
| |
| fprintf (file, "\tVersion: %d, Flags: ", ui.Version); |
| switch (ui.Flags) |
| { |
| case UNW_FLAG_NHANDLER: |
| fprintf (file, "none"); |
| 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_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; |
| } |
| fputc ('\n', file); |
| fprintf (file, "\tNbr codes: %u, ", (unsigned int) ui.CountOfCodes); |
| fprintf (file, "Prologue size: 0x%02x, Frame offset: 0x%x, ", |
| (unsigned int) ui.SizeOfPrologue, (unsigned int) ui.FrameOffset); |
| fprintf (file, "Frame reg: %s\n", |
| ui.FrameRegister == 0 ? "none" |
| : pex_regs[(unsigned int) ui.FrameRegister]); |
| |
| /* PR 17512: file: 2245-7442-0.004. */ |
| if (ui.CountOfCodes * 2 + ui.rawUnwindCodes > xdata + xdata_section->size) |
| fprintf (file, _("Too many unwind codes (%ld)\n"), (long) ui.CountOfCodes); |
| else |
| pex64_xdata_print_uwd_codes (file, abfd, &ui, rf); |
| |
| switch (ui.Flags) |
| { |
| case UNW_FLAG_EHANDLER: |
| case UNW_FLAG_UHANDLER: |
| case UNW_FLAG_FHANDLER: |
| fprintf (file, "\tHandler: %016" PRIx64 ".\n", |
| ui.rva_ExceptionHandler + pe_data (abfd)->pe_opthdr.ImageBase); |
| break; |
| case UNW_FLAG_CHAININFO: |
| fprintf (file, "\tChain: start: %016" PRIx64 ", end: %016" PRIx64, |
| ui.rva_BeginAddress, ui.rva_EndAddress); |
| fprintf (file, "\n\t unwind data: %016" PRIx64 ".\n", |
| ui.rva_UnwindData); |
| break; |
| } |
| |
| /* 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", xdata[addr]); |
| if ((i & 15) == 15) |
| fprintf (file, "\n"); |
| } |
| if ((i & 15) != 0) |
| fprintf (file, "\n"); |
| } |
| } |
| |
| /* Helper function to sort xdata. The entries of xdata are sorted to know |
| the size of each entry. */ |
| |
| 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); |
| } |
| |
| /* Display unwind tables for x86-64. */ |
| |
| static bool |
| pex64_bfd_print_pdata_section (bfd *abfd, void *vfile, asection *pdata_section) |
| { |
| FILE *file = (FILE *) vfile; |
| bfd_byte *pdata = NULL; |
| bfd_byte *xdata = NULL; |
| asection *xdata_section = NULL; |
| bfd_vma xdata_base; |
| bfd_size_type i; |
| bfd_size_type datasize; |
| bfd_size_type stop; |
| bfd_vma prev_beginaddress = (bfd_vma) -1; |
| bfd_vma prev_unwinddata_rva = (bfd_vma) -1; |
| bfd_vma imagebase; |
| int onaline = PDATA_ROW_SIZE; |
| int seen_error = 0; |
| bfd_vma *xdata_arr = NULL; |
| int xdata_arr_cnt; |
| bool virt_size_is_zero = false; |
| |
| /* Sanity checks. */ |
| if (pdata_section == NULL |
| || (pdata_section->flags & SEC_HAS_CONTENTS) == 0 |
| || coff_section_data (abfd, pdata_section) == NULL |
| || pei_section_data (abfd, pdata_section) == NULL) |
| return true; |
| |
| stop = pei_section_data (abfd, pdata_section)->virt_size; |
| if ((stop % onaline) != 0) |
| fprintf (file, |
| /* xgettext:c-format */ |
| _("Warning: %s section size (%ld) is not a multiple of %d\n"), |
| pdata_section->name, (long) stop, onaline); |
| |
| datasize = pdata_section->size; |
| if (datasize == 0) |
| { |
| if (stop) |
| fprintf (file, _("Warning: %s section size is zero\n"), |
| pdata_section->name); |
| return true; |
| } |
| |
| /* virt_size might be zero for objects. */ |
| if (stop == 0 && strcmp (abfd->xvec->name, "pe-x86-64") == 0) |
| { |
| stop = datasize; |
| virt_size_is_zero = true; |
| } |
| else if (datasize < stop) |
| { |
| fprintf (file, |
| /* xgettext:c-format */ |
| _("Warning: %s section size (%ld) is smaller than virtual size (%ld)\n"), |
| pdata_section->name, (unsigned long) datasize, |
| (unsigned long) stop); |
| /* Be sure not to read past datasize. */ |
| stop = datasize; |
| } |
| |
| /* Display functions table. */ |
| fprintf (file, |
| _("\nThe Function Table (interpreted %s section contents)\n"), |
| pdata_section->name); |
| |
| fprintf (file, _("vma:\t\t\tBeginAddress\t EndAddress\t UnwindData\n")); |
| |
| if (!bfd_malloc_and_get_section (abfd, pdata_section, &pdata)) |
| goto done; |
| |
| /* Table of xdata entries. */ |
| xdata_arr = (bfd_vma *) xmalloc (sizeof (bfd_vma) * ((stop / onaline) + 1)); |
| xdata_arr_cnt = 0; |
| |
| if (strcmp (abfd->xvec->name, "pei-x86-64") == 0) |
| imagebase = pe_data (abfd)->pe_opthdr.ImageBase; |
| else |
| imagebase = 0; |
| |
| 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, &pdata[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; |
| fprintf (file, " %016" PRIx64, i + pdata_section->vma); |
| fprintf (file, ":\t%016" PRIx64, imagebase + rf.rva_BeginAddress); |
| fprintf (file, " %016" PRIx64, imagebase + rf.rva_EndAddress); |
| fprintf (file, " %016" PRIx64 "\n", imagebase + rf.rva_UnwindData); |
| 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"); |
| } |
| else if ((rf.rva_UnwindData && !PEX64_IS_RUNTIME_FUNCTION_CHAINED (&rf)) |
| || virt_size_is_zero) |
| xdata_arr[xdata_arr_cnt++] = rf.rva_UnwindData; |
| } |
| |
| if (seen_error) |
| goto done; |
| |
| /* 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); |
| |
| /* Find the section containing the unwind data (.xdata). */ |
| xdata_base = xdata_arr[0]; |
| /* For sections with long names, first look for the same |
| section name, replacing .pdata by .xdata prefix. */ |
| if (strcmp (pdata_section->name, ".pdata") != 0) |
| { |
| size_t len = strlen (pdata_section->name); |
| char *xdata_name = xmalloc (len + 1); |
| |
| xdata_name = memcpy (xdata_name, pdata_section->name, len + 1); |
| /* Transform .pdata prefix into .xdata prefix. */ |
| if (len > 1) |
| xdata_name [1] = 'x'; |
| xdata_section = pex64_get_section_by_rva (abfd, xdata_base, |
| xdata_name); |
| free (xdata_name); |
| } |
| /* Second, try the .xdata section itself. */ |
| if (!xdata_section) |
| xdata_section = pex64_get_section_by_rva (abfd, xdata_base, ".xdata"); |
| /* Otherwise, if xdata_base is non zero, search also inside |
| other standard sections. */ |
| if (!xdata_section && xdata_base) |
| xdata_section = pex64_get_section_by_rva (abfd, xdata_base, ".rdata"); |
| if (!xdata_section && xdata_base) |
| xdata_section = pex64_get_section_by_rva (abfd, xdata_base, ".data"); |
| if (!xdata_section && xdata_base) |
| xdata_section = pex64_get_section_by_rva (abfd, xdata_base, ".pdata"); |
| if (!xdata_section && xdata_base) |
| xdata_section = pex64_get_section_by_rva (abfd, xdata_base, ".text"); |
| /* Transfer xdata section into xdata array. */ |
| if (!xdata_section |
| || (xdata_section->flags & SEC_HAS_CONTENTS) == 0 |
| || !bfd_malloc_and_get_section (abfd, xdata_section, &xdata)) |
| goto done; |
| |
| /* Avoid "also used "... ouput for single unwind info |
| in object file. */ |
| prev_unwinddata_rva = (bfd_vma) -1; |
| |
| /* 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, &pdata[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 %s\n"), xdata_section->name); |
| |
| fprintf (file, " %016" PRIx64, rf.rva_UnwindData + imagebase); |
| |
| if (prev_unwinddata_rva == rf.rva_UnwindData) |
| { |
| /* Do not dump again the xdata for the same entry. */ |
| fprintf (file, " also used for function at %016" PRIx64 "\n", |
| rf.rva_BeginAddress + imagebase); |
| continue; |
| } |
| else |
| prev_unwinddata_rva = rf.rva_UnwindData; |
| |
| fprintf (file, " (rva: %08x): %016" PRIx64 " - %016" PRIx64 "\n", |
| (unsigned int) rf.rva_UnwindData, |
| rf.rva_BeginAddress + imagebase, |
| rf.rva_EndAddress + imagebase); |
| |
| if (rf.rva_UnwindData != 0 || virt_size_is_zero) |
| { |
| if (PEX64_IS_RUNTIME_FUNCTION_CHAINED (&rf)) |
| { |
| bfd_vma altent = PEX64_GET_UNWINDDATA_UNIFIED_RVA (&rf); |
| bfd_vma pdata_vma = bfd_section_vma (pdata_section); |
| struct pex64_runtime_function arf; |
| |
| fprintf (file, "\t shares information with "); |
| altent += imagebase; |
| |
| if (altent >= pdata_vma |
| && altent - pdata_vma + PDATA_ROW_SIZE <= stop) |
| { |
| pex64_get_runtime_function |
| (abfd, &arf, &pdata[altent - pdata_vma]); |
| fprintf (file, "pdata element at 0x%016" PRIx64, |
| arf.rva_UnwindData); |
| } |
| else |
| fprintf (file, "unknown pdata element"); |
| 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, xdata_section, xdata, p, &rf); |
| } |
| } |
| } |
| |
| done: |
| free (pdata); |
| free (xdata_arr); |
| free (xdata); |
| |
| return true; |
| } |
| |
| struct pex64_paps |
| { |
| void *obj; |
| /* Number of found pdata sections. */ |
| unsigned int pdata_count; |
| }; |
| |
| /* Functionn prototype. */ |
| bool pex64_bfd_print_pdata (bfd *, void *); |
| |
| /* Helper function for bfd_map_over_section. */ |
| static void |
| pex64_print_all_pdata_sections (bfd *abfd, asection *pdata, void *arg) |
| { |
| struct pex64_paps *paps = arg; |
| if (startswith (pdata->name, ".pdata")) |
| { |
| if (pex64_bfd_print_pdata_section (abfd, paps->obj, pdata)) |
| paps->pdata_count++; |
| } |
| } |
| |
| bool |
| pex64_bfd_print_pdata (bfd *abfd, void *vfile) |
| { |
| asection *pdata_section = bfd_get_section_by_name (abfd, ".pdata"); |
| struct pex64_paps paps; |
| |
| if (pdata_section) |
| return pex64_bfd_print_pdata_section (abfd, vfile, pdata_section); |
| |
| paps.obj = vfile; |
| paps.pdata_count = 0; |
| bfd_map_over_sections (abfd, pex64_print_all_pdata_sections, &paps); |
| return paps.pdata_count != 0; |
| } |
| |
| #define bfd_pe_print_pdata pex64_bfd_print_pdata |
| #define bfd_coff_std_swap_table bfd_coff_pei_swap_table |
| |
| #include "coff-x86_64.c" |