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-rw-r--r--bfd/pei-x86_64.c475
1 files changed, 475 insertions, 0 deletions
diff --git a/bfd/pei-x86_64.c b/bfd/pei-x86_64.c
index f62e697..f5b8abd 100644
--- a/bfd/pei-x86_64.c
+++ b/bfd/pei-x86_64.c
@@ -34,6 +34,7 @@
#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"), \
@@ -53,4 +54,478 @@
{ 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_EHANDLER:
+ ui->rva_ExceptionHandler = bfd_get_32 (abfd, ex_dta);
+ break;
+ case UNW_FLAG_UHANDLER:
+ ui->rva_TerminationHandler = bfd_get_32 (abfd, ex_dta);
+ break;
+ case UNW_FLAG_FHANDLER:
+ ui->rva_FrameHandler = bfd_get_32 (abfd, ex_dta);
+ ui->FrameHandlerArgument = bfd_get_32 (abfd, ex_dta + 4);
+ ui->SizeOfBlock += 8;
+ return;
+ case UNW_FLAG_CHAININFO:
+ ui->rva_FunctionEntry = bfd_get_32 (abfd, ex_dta);
+ ui->SizeOfBlock += 4;
+ return;
+ default:
+ return;
+ }
+ ex_dta += 4;
+ ui->SizeOfBlock += 8;
+ ui->CountOfScopes = bfd_get_32 (abfd, ex_dta);
+ ex_dta += 4;
+ ui->rawScopeEntries = ex_dta;
+ ui->SizeOfBlock += (ui->CountOfScopes * PEX64_SCOPE_ENTRY_SIZE);
+}
+
+static void
+pex64_get_scope_entry (bfd *abfd, struct pex64_scope_entry *se,
+ bfd_vma idx, const bfd_byte *x)
+{
+ const struct external_pex64_scope_entry *ex_se;
+ x += (idx * PEX64_SCOPE_ENTRY_SIZE);
+ ex_se = (const struct external_pex64_scope_entry *) x;
+ memset (se, 0, sizeof (struct pex64_scope_entry));
+ se->rva_BeginAddress = bfd_get_32 (abfd, ex_se->rva_BeginAddress);
+ se->rva_EndAddress = bfd_get_32 (abfd, ex_se->rva_EndAddress);
+ se->rva_HandlerAddress = bfd_get_32 (abfd, ex_se->rva_HandlerAddress);
+ se->rva_JumpAddress = bfd_get_32 (abfd, ex_se->rva_JumpAddress);
+}
+
+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)
+{
+ asection *section = pex64_get_section_by_rva (abfd, addr, ".rdata");
+ bfd_vma vsize;
+ bfd_byte *data = NULL;
+ bfd_vma i;
+
+ 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 (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 ? "CFA"
+ : pex_regs[(unsigned int) ui.FrameRegister]);
+
+ pex64_xdata_print_uwd_codes (file, &ui, pc_addr);
+
+ switch (ui.Flags)
+ {
+ case UNW_FLAG_NHANDLER:
+ return;
+ case UNW_FLAG_EHANDLER:
+ fprintf (file, "\texception_handler at 0x%x.\n", (unsigned int) ui.rva_ExceptionHandler);
+ break;
+ case UNW_FLAG_UHANDLER:
+ fprintf (file, "\ttermination_handler at 0x%x.\n", (unsigned int) ui.rva_TerminationHandler);
+ case UNW_FLAG_FHANDLER:
+ fprintf (file, "\tframe_handler at 0x%x.\n", (unsigned int) ui.rva_FrameHandler);
+ fprintf (file, "\t Argument for FrameHandler: 0x%x.\n",
+ (unsigned int) ui.FrameHandlerArgument);
+ return;
+ case UNW_FLAG_CHAININFO:
+ fprintf (file, "\t Function Entry: 0x%x\n", (unsigned int) ui.rva_FunctionEntry);
+ return;
+ default:
+ fprintf (file, "\t Unknown flag value of 0x%x\n", (unsigned int) ui.Flags);
+ return;
+ }
+ fprintf (file, "\t 0x%x # of scope(s)\n", (unsigned int) ui.CountOfScopes);
+ for (i = 0; i < ui.CountOfScopes; i++)
+ {
+ struct pex64_scope_entry se;
+ pex64_get_scope_entry (abfd, &se, i, ui.rawScopeEntries);
+ fprintf (file, "\t scope #%u: BeginAddress: 0x%x, EndAddress: 0x%x,"
+ "\n\t\tHandlerAddress:0x%x, JumpTarget:0x%x\n",
+ (unsigned int) (i + 1),
+ (unsigned int) se.rva_BeginAddress,
+ (unsigned int) se.rva_EndAddress,
+ (unsigned int) se.rva_HandlerAddress,
+ (unsigned int) se.rva_JumpAddress);
+ }
+ }
+ if (data != NULL)
+ free (data);
+}
+
+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 start, stop;
+ int onaline = PDATA_ROW_SIZE;
+
+ 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;
+ }
+
+ start = 0;
+
+ for (i = start; 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");
+ rf.rva_BeginAddress += pe_data (abfd)->pe_opthdr.ImageBase;
+ fprintf_vma (file, rf.rva_BeginAddress);
+ fputc (' ', file);
+ rf.rva_EndAddress += pe_data (abfd)->pe_opthdr.ImageBase;
+ fprintf_vma (file, rf.rva_EndAddress);
+ fputc (' ', file);
+ fprintf_vma (file, rf.rva_UnwindData);
+ fprintf (file, "\n");
+
+ if (rf.rva_UnwindData != 0)
+ {
+ if (rf.isChained)
+ {
+ fprintf (file, "\t shares information with pdata element at 0x");
+ fprintf_vma (file, rf.rva_UnwindData + pe_data (abfd)->pe_opthdr.ImageBase);
+ fprintf (file, ".\n");
+ }
+ else
+ pex64_dump_xdata (file, abfd, rf.rva_UnwindData, rf.rva_BeginAddress);
+ }
+ }
+
+ free (data);
+
+ return TRUE;
+}
+
+#define bfd_pe_print_pdata pex64_bfd_print_pdata
+
#include "coff-x86_64.c"
generated by cgit v1.1 at 2024-11-22 18:17:14 +0000