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https://sourceware.org/git/binutils-gdb.git
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1360ae660f
* pei-x86_64.c (find_next_xdata_or_end): Removed. (pex64_dump_xdata): Remove arguments stop, onaline, and pdata. New argument endx. Print term "none" instead of misleading "CFA". (sort_xdata_arr): New function. (pex64_bfd_print_pdata): Use binary search/sort for unwind-RVAs instead of searching quadratic.
594 lines
17 KiB
C
594 lines
17 KiB
C
/* BFD back-end for Intel 386 PE IMAGE COFF files.
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Copyright 2006, 2007, 2009 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA.
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Written by Kai Tietz, OneVision Software GmbH&CoKg. */
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#include "sysdep.h"
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#include "bfd.h"
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#define TARGET_SYM x86_64pei_vec
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#define TARGET_NAME "pei-x86-64"
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#define COFF_IMAGE_WITH_PE
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#define COFF_WITH_PE
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#define COFF_WITH_pex64
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#define PCRELOFFSET TRUE
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#if defined (USE_MINGW64_LEADING_UNDERSCORES)
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#define TARGET_UNDERSCORE '_'
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#else
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#define TARGET_UNDERSCORE 0
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#endif
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/* Long section names not allowed in executable images, only object files. */
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#define COFF_LONG_SECTION_NAMES 0
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#define COFF_SUPPORT_GNU_LINKONCE
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#define COFF_LONG_FILENAMES
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#define PDATA_ROW_SIZE (3 * 4)
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#define COFF_SECTION_ALIGNMENT_ENTRIES \
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{ COFF_SECTION_NAME_EXACT_MATCH (".bss"), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
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{ COFF_SECTION_NAME_PARTIAL_MATCH (".data"), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
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{ COFF_SECTION_NAME_PARTIAL_MATCH (".rdata"), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
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{ COFF_SECTION_NAME_PARTIAL_MATCH (".text"), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
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{ COFF_SECTION_NAME_PARTIAL_MATCH (".idata"), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
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{ COFF_SECTION_NAME_EXACT_MATCH (".pdata"), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
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{ COFF_SECTION_NAME_PARTIAL_MATCH (".debug"), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
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{ COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi."), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
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/* Note we have to make sure not to include headers twice.
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Not all headers are wrapped in #ifdef guards, so we define
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PEI_HEADERS to prevent double including in coff-x86_64.c */
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#define PEI_HEADERS
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "coff/x86_64.h"
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#include "coff/internal.h"
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#include "coff/pe.h"
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#include "libcoff.h"
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#include "libpei.h"
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#include "libiberty.h"
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#undef AOUTSZ
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#define AOUTSZ PEPAOUTSZ
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#define PEAOUTHDR PEPAOUTHDR
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static const char *pex_regs[16] = {
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"rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
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"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
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};
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static void
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pex64_get_runtime_function (bfd *abfd, struct pex64_runtime_function *rf,
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const void *data)
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{
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const struct external_pex64_runtime_function *ex_rf =
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(const struct external_pex64_runtime_function *) data;
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rf->rva_BeginAddress = bfd_get_32 (abfd, ex_rf->rva_BeginAddress);
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rf->rva_EndAddress = bfd_get_32 (abfd, ex_rf->rva_EndAddress);
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rf->rva_UnwindData = bfd_get_32 (abfd, ex_rf->rva_UnwindData);
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rf->isChained = PEX64_IS_RUNTIME_FUNCTION_CHAINED (rf);
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rf->rva_UnwindData = PEX64_GET_UNWINDDATA_UNIFIED_RVA (rf);
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}
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static void
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pex64_get_unwind_info (bfd *abfd, struct pex64_unwind_info *ui, void *data)
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{
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struct external_pex64_unwind_info *ex_ui =
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(struct external_pex64_unwind_info *) data;
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bfd_byte *ex_dta = (bfd_byte *) data;
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memset (ui, 0, sizeof (struct pex64_unwind_info));
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ui->Version = PEX64_UWI_VERSION (ex_ui->Version_Flags);
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ui->Flags = PEX64_UWI_FLAGS (ex_ui->Version_Flags);
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ui->SizeOfPrologue = (bfd_vma) ex_ui->SizeOfPrologue;
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ui->CountOfCodes = (bfd_vma) ex_ui->CountOfCodes;
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ui->FrameRegister = PEX64_UWI_FRAMEREG (ex_ui->FrameRegisterOffset);
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ui->FrameOffset = PEX64_UWI_FRAMEOFF (ex_ui->FrameRegisterOffset);
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ui->sizeofUnwindCodes = PEX64_UWI_SIZEOF_UWCODE_ARRAY (ui->CountOfCodes);
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ui->SizeOfBlock = ui->sizeofUnwindCodes + 4;
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ui->rawUnwindCodes = &ex_dta[4];
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ex_dta += ui->SizeOfBlock;
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switch (ui->Flags)
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{
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case UNW_FLAG_CHAININFO:
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ui->rva_FunctionEntry = bfd_get_32 (abfd, ex_dta);
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ui->SizeOfBlock += 4;
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return;
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default:
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return;
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}
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}
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static void
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pex64_xdata_print_uwd_codes (FILE *file, struct pex64_unwind_info *ui,
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bfd_vma pc_addr)
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{
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bfd_vma i;
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bfd_vma tmp = 0;
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const bfd_byte *insns[256];
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bfd_vma insns_count = 0;
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const bfd_byte *dta = ui->rawUnwindCodes;
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if (ui->CountOfCodes == 0 || !dta)
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return;
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/* Sort array ascending. Note: it is stored in reversed order. */
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for (i = 0; i < ui->CountOfCodes; i++)
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{
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const bfd_byte *t;
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t = insns[insns_count++] = &dta[i * 2];
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switch (PEX64_UNWCODE_CODE (t[1]))
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{
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case UWOP_PUSH_NONVOL:
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case UWOP_ALLOC_SMALL:
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case UWOP_SET_FPREG:
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case UWOP_PUSH_MACHFRAME:
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break;
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case UWOP_ALLOC_LARGE:
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if (PEX64_UNWCODE_INFO (t[1]) == 0)
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{
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i += 1;
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break;
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}
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else if (PEX64_UNWCODE_INFO (t[1]) == 1)
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{
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i += 2;
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break;
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}
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/* fall through. */
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default:
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fprintf (file, "\t contains unknown code (%u).\n",
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(unsigned int) PEX64_UNWCODE_CODE (t[1]));
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return;
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case UWOP_SAVE_NONVOL:
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case UWOP_SAVE_XMM:
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case UWOP_SAVE_XMM128:
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i++;
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break;
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case UWOP_SAVE_NONVOL_FAR:
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case UWOP_SAVE_XMM_FAR:
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case UWOP_SAVE_XMM128_FAR:
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i += 2;
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break;
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}
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}
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fprintf (file, "\t At pc 0x");
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fprintf_vma (file, pc_addr);
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fprintf (file, " there are the following saves (in logical order).\n");
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for (i = insns_count; i > 0;)
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{
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--i;
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dta = insns[i];
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fprintf (file, "\t insn ends at pc+0x%02x: ", (unsigned int) dta[0]);
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switch (PEX64_UNWCODE_CODE (dta[1]))
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{
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case UWOP_PUSH_NONVOL:
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fprintf (file, "push %s.\n", pex_regs[PEX64_UNWCODE_INFO (dta[1])]);
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break;
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case UWOP_ALLOC_LARGE:
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if (PEX64_UNWCODE_INFO (dta[1]) == 0)
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{
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tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
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tmp *= 8;
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}
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else
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tmp = (bfd_vma) (*((unsigned int *)&dta[2]));
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fprintf (file, "save stack region of size 0x");
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fprintf_vma (file, tmp);
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fprintf (file,".\n");
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break;
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case UWOP_ALLOC_SMALL:
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tmp = (bfd_vma) PEX64_UNWCODE_INFO (dta[1]);
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tmp += 1;
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tmp *= 8;
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fprintf (file, "save stack region of size 0x");
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fprintf_vma (file, tmp);
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fprintf (file,".\n");
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break;
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case UWOP_SET_FPREG:
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tmp = (bfd_vma) PEX64_UNWCODE_INFO (dta[1]);
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tmp *= 16;
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fprintf (file, "FPReg = (FrameReg) + 0x");
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fprintf_vma (file, tmp);
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fprintf (file, ".\n");
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break;
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case UWOP_SAVE_NONVOL:
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fprintf (file, "mov %s at 0x",
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pex_regs[PEX64_UNWCODE_INFO (dta[1])]);
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tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
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tmp *= 8;
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fprintf_vma (file, tmp);
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fprintf (file, ".\n");
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break;
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case UWOP_SAVE_NONVOL_FAR:
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fprintf (file, "mov %s at 0x",
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pex_regs[PEX64_UNWCODE_INFO (dta[1])]);
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tmp = (bfd_vma) (*((unsigned int *) &dta[2]));
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fprintf_vma (file, tmp);
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fprintf (file, ".\n");
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break;
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case UWOP_SAVE_XMM:
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tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
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tmp *= 8;
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fprintf (file, "mov mm%u at 0x",
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(unsigned int) PEX64_UNWCODE_INFO (dta[1]));
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fprintf_vma (file, tmp);
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fprintf (file, ".\n");
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break;
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case UWOP_SAVE_XMM_FAR:
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tmp = (bfd_vma) (*((unsigned int *) &dta[2]));
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fprintf (file, "mov mm%u at 0x",
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(unsigned int) PEX64_UNWCODE_INFO (dta[1]));
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fprintf_vma (file, tmp);
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fprintf (file, ".\n");
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break;
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case UWOP_SAVE_XMM128:
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tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
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tmp *= 16;
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fprintf (file, "mov xmm%u at 0x",
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(unsigned int) PEX64_UNWCODE_INFO ( dta[1]));
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fprintf_vma (file, tmp);
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fprintf (file, ".\n");
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break;
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case UWOP_SAVE_XMM128_FAR:
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tmp = (bfd_vma) (*((unsigned int *) &dta[2]));
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fprintf (file, "mov xmm%u at 0x",
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(unsigned int) PEX64_UNWCODE_INFO (dta[1]));
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fprintf_vma (file, tmp);
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fprintf (file, ".\n");
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break;
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case UWOP_PUSH_MACHFRAME:
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fprintf (file, "interrupt entry (SS, old RSP, EFLAGS, CS, RIP");
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if (PEX64_UNWCODE_INFO (dta[1]) == 0)
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{
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fprintf (file, ")");
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}
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else if (PEX64_UNWCODE_INFO (dta[1]) == 1)
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{
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fprintf (file, ",ErrorCode)");
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}
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else
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fprintf (file, ", unknown(%u))",
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(unsigned int) PEX64_UNWCODE_INFO (dta[1]));
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fprintf (file,".\n");
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break;
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default:
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fprintf (file, "unknown code %u.\n",
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(unsigned int) PEX64_UNWCODE_INFO (dta[1]));
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break;
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}
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}
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}
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static asection *
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pex64_get_section_by_rva (bfd *abfd, bfd_vma addr, const char *sec_name)
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{
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asection *section = bfd_get_section_by_name (abfd, sec_name);
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bfd_vma vsize;
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bfd_size_type datasize = 0;
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if (section == NULL
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|| coff_section_data (abfd, section) == NULL
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|| pei_section_data (abfd, section) == NULL)
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return NULL;
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vsize = section->vma - pe_data (abfd)->pe_opthdr.ImageBase;
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datasize = section->size;
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if (!datasize || vsize > addr || (vsize + datasize) < addr)
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return NULL;
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return section;
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}
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static void
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pex64_dump_xdata (FILE *file, bfd *abfd, bfd_vma addr, bfd_vma pc_addr,
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bfd_vma *endx)
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{
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asection *section = pex64_get_section_by_rva (abfd, addr, ".rdata");
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bfd_vma vsize;
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bfd_byte *data = NULL;
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bfd_vma end_addr;
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if (!section)
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section = pex64_get_section_by_rva (abfd, addr, ".data");
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if (!section)
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section = pex64_get_section_by_rva (abfd, addr, ".xdata");
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if (!section)
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{
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section = pex64_get_section_by_rva (abfd, addr, ".pdata");
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if (section)
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{
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fprintf (file, "\t Shares information with pdata element at 0x");
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fprintf_vma (file, addr + pe_data (abfd)->pe_opthdr.ImageBase);
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fprintf (file, ".\n");
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}
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}
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if (!section)
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return;
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vsize = section->vma - pe_data (abfd)->pe_opthdr.ImageBase;
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addr -= vsize;
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if (endx)
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end_addr = endx[0] - vsize;
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else
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end_addr = (section->rawsize != 0 ? section->rawsize : section->size);
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if (bfd_malloc_and_get_section (abfd, section, &data))
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{
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struct pex64_unwind_info ui;
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if (!data)
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return;
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pex64_get_unwind_info (abfd, &ui, &data[addr]);
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if (ui.Version != 1)
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{
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fprintf (file, "\tVersion %u (unknown).\n", (unsigned int) ui.Version);
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return;
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}
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fprintf (file, "\tFlags: ");
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switch (ui.Flags)
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{
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case UNW_FLAG_NHANDLER:
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fprintf (file, "UNW_FLAG_NHANDLER");
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break;
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case UNW_FLAG_EHANDLER:
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fprintf (file, "UNW_FLAG_EHANDLER");
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break;
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case UNW_FLAG_UHANDLER:
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fprintf (file, "UNW_FLAG_UHANDLER");
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break;
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case UNW_FLAG_FHANDLER:
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fprintf (file, "UNW_FLAG_FHANDLER = (UNW_FLAG_EHANDLER | UNW_FLAG_UHANDLER)");
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break;
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case UNW_FLAG_CHAININFO:
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fprintf (file, "UNW_FLAG_CHAININFO");
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break;
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default:
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fprintf (file, "unknown flags value 0x%x", (unsigned int) ui.Flags);
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break;
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}
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fprintf (file, ".\n");
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if (ui.CountOfCodes != 0)
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fprintf (file, "\tEntry has %u codes.", (unsigned int) ui.CountOfCodes);
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fprintf (file, "\tPrologue size: %u, Frame offset = 0x%x.\n",
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(unsigned int) ui.SizeOfPrologue, (unsigned int) ui.FrameOffset);
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fprintf (file, "\tFrame register is %s.\n",
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ui.FrameRegister == 0 ? "none"
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: pex_regs[(unsigned int) ui.FrameRegister]);
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pex64_xdata_print_uwd_codes (file, &ui, pc_addr);
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/* Now we need end of this xdata block. */
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addr += ui.SizeOfBlock;
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if (addr < end_addr)
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{
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unsigned int i;
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fprintf (file,"\tUser data:\n");
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for (i = 0; addr < end_addr; addr += 1, i++)
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{
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if ((i & 15) == 0)
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fprintf (file, "\t %03x:", i);
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fprintf (file, " %02x", data[addr]);
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if ((i & 15) == 15)
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fprintf (file, "\n");
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}
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if ((i & 15) != 0)
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fprintf (file, "\n");
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}
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}
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if (data != NULL)
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free (data);
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}
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static int
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sort_xdata_arr (const void *l, const void *r)
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{
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const bfd_vma *lp = (const bfd_vma *) l;
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const bfd_vma *rp = (const bfd_vma *) r;
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if (*lp == *rp)
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return 0;
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return (*lp < *rp ? -1 : 1);
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}
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static bfd_boolean
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pex64_bfd_print_pdata (bfd *abfd, void *vfile)
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{
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FILE *file = (FILE *) vfile;
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bfd_byte *data = NULL;
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asection *section = bfd_get_section_by_name (abfd, ".pdata");
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bfd_size_type datasize = 0;
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bfd_size_type i;
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bfd_size_type stop;
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bfd_vma prev_beginaddress = 0;
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int onaline = PDATA_ROW_SIZE;
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int seen_error = 0;
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bfd_vma *xdata_arr;
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int xdata_arr_cnt;
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if (section == NULL
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|| coff_section_data (abfd, section) == NULL
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|| pei_section_data (abfd, section) == NULL)
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return TRUE;
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stop = pei_section_data (abfd, section)->virt_size;
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if ((stop % onaline) != 0)
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fprintf (file,
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|
_("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"
|