gdb: add target_ops::supports_displaced_step
[deliverable/binutils-gdb.git] / bfd / coff-x86_64.c
index d92e03dea1b5933c2ba61346df7d040a0635ae72..a6632910da450106048d1b651b6f1c8f096b7475 100644 (file)
@@ -1,5 +1,5 @@
 /* BFD back-end for AMD 64 COFF files.
-   Copyright (C) 2006-2016 Free Software Foundation, Inc.
+   Copyright (C) 2006-2020 Free Software Foundation, Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
 
@@ -52,6 +52,9 @@
 
 #define COFF_PAGE_SIZE 0x1000
 
+/* All users of this file have bfd_octets_per_byte (abfd, sec) == 1.  */
+#define OCTETS_PER_BYTE(ABFD, SEC) 1
+
 /* For some reason when using AMD COFF the value stored in the .text
    section for a reference to a common symbol is the value itself plus
    any desired offset.  Ian Taylor, Cygnus Support.  */
@@ -141,18 +144,12 @@ coff_amd64_reloc (bfd *abfd,
   if (diff != 0)
     {
       reloc_howto_type *howto = reloc_entry->howto;
-      unsigned char *addr = (unsigned char *) data + reloc_entry->address;
-
-      /* FIXME: We do not have an end address for data, so we cannot
-        accurately range check any addresses computed against it.
-        cf: PR binutils/17512: file: 1085-1761-0.004.
-        For now we do the best that we can.  */
-      if (addr < (unsigned char *) data
-         || addr > ((unsigned char *) data) + input_section->size)
-       {
-         bfd_set_error (bfd_error_bad_value);
-         return bfd_reloc_notsupported;
-       }
+      bfd_size_type octets = (reloc_entry->address
+                             * OCTETS_PER_BYTE (abfd, input_section));
+      unsigned char *addr = (unsigned char *) data + octets;
+
+      if (!bfd_reloc_offset_in_range (howto, abfd, input_section, octets))
+       return bfd_reloc_outofrange;
 
       switch (howto->size)
        {
@@ -182,9 +179,9 @@ coff_amd64_reloc (bfd *abfd,
 
        case 4:
          {
-           long long x = bfd_get_64 (abfd, addr);
+           bfd_uint64_t x = bfd_get_64 (abfd, addr);
            DOIT (x);
-           bfd_put_64 (abfd, (bfd_vma) x, addr);
+           bfd_put_64 (abfd, x, addr);
          }
          break;
 
@@ -360,18 +357,18 @@ static reloc_howto_type howto_table[] =
   EMPTY_HOWTO (13),
 #ifndef DONT_EXTEND_AMD64
   HOWTO (R_AMD64_PCRQUAD,
-         0,                     /* rightshift */
-         4,                     /* size (0 = byte, 1 = short, 2 = long) */
-         64,                    /* bitsize */
-         TRUE,                  /* pc_relative */
-         0,                     /* bitpos */
-         complain_overflow_signed, /* complain_on_overflow */
-         coff_amd64_reloc,      /* special_function */
-         "R_X86_64_PC64",       /* name */
-         TRUE,                  /* partial_inplace */
-         0xffffffffffffffffll,  /* src_mask */
-         0xffffffffffffffffll,  /* dst_mask */
-         PCRELOFFSET),           /* pcrel_offset */
+        0,                     /* rightshift */
+        4,                     /* size (0 = byte, 1 = short, 2 = long) */
+        64,                    /* bitsize */
+        TRUE,                  /* pc_relative */
+        0,                     /* bitpos */
+        complain_overflow_signed, /* complain_on_overflow */
+        coff_amd64_reloc,      /* special_function */
+        "R_X86_64_PC64",       /* name */
+        TRUE,                  /* partial_inplace */
+        0xffffffffffffffffll,  /* src_mask */
+        0xffffffffffffffffll,  /* dst_mask */
+        PCRELOFFSET),           /* pcrel_offset */
 #else
   EMPTY_HOWTO (14),
 #endif
@@ -496,13 +493,13 @@ static reloc_howto_type howto_table[] =
 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr)               \
   {                                                            \
     coff_symbol_type *coffsym = NULL;                          \
-                                                               \
+                                                               \
     if (ptr && bfd_asymbol_bfd (ptr) != abfd)                  \
       coffsym = (obj_symbols (abfd)                            \
-                + (cache_ptr->sym_ptr_ptr - symbols));         \
+                + (cache_ptr->sym_ptr_ptr - symbols));         \
     else if (ptr)                                              \
       coffsym = coff_symbol_from (ptr);                                \
-                                                               \
+                                                               \
     if (coffsym != NULL                                                \
        && coffsym->native->u.syment.n_scnum == 0)              \
       cache_ptr->addend = - coffsym->native->u.syment.n_value; \
@@ -622,11 +619,11 @@ coff_amd64_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
        *addendp -= 4;
 
       /* If the symbol is defined, then the generic code is going to
-         add back the symbol value in order to cancel out an
-         adjustment it made to the addend.  However, we set the addend
-         to 0 at the start of this function.  We need to adjust here,
-         to avoid the adjustment the generic code will make.  FIXME:
-         This is getting a bit hackish.  */
+        add back the symbol value in order to cancel out an
+        adjustment it made to the addend.  However, we set the addend
+        to 0 at the start of this function.  We need to adjust here,
+        to avoid the adjustment the generic code will make.  FIXME:
+        This is getting a bit hackish.  */
       if (sym != NULL && sym->n_scnum != 0)
        *addendp -= sym->n_value;
     }
@@ -767,9 +764,9 @@ const bfd_target
   BFD_ENDIAN_LITTLE,           /* Data byte order is little.  */
   BFD_ENDIAN_LITTLE,           /* Header byte order is little.  */
 
-  (HAS_RELOC | EXEC_P |                /* Object flags.  */
-   HAS_LINENO | HAS_DEBUG |
-   HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS),
+  (HAS_RELOC | EXEC_P          /* Object flags.  */
+   | HAS_LINENO | HAS_DEBUG
+   HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS),
 
   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags.  */
 #if defined(COFF_WITH_PE)
@@ -794,12 +791,24 @@ const bfd_target
      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Hdrs.  */
 
   /* Note that we allow an object file to be treated as a core file as well.  */
-  { _bfd_dummy_target, amd64coff_object_p, /* BFD_check_format.  */
-    bfd_generic_archive_p, amd64coff_object_p },
-  { bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format.  */
-    bfd_false },
-  { bfd_false, coff_write_object_contents, /* bfd_write_contents.  */
-   _bfd_write_archive_contents, bfd_false },
+  {                            /* bfd_check_format.  */
+    _bfd_dummy_target,
+    amd64coff_object_p,
+    bfd_generic_archive_p,
+    amd64coff_object_p
+  },
+  {                            /* bfd_set_format.  */
+    _bfd_bool_bfd_false_error,
+    coff_mkobject,
+    _bfd_generic_mkarchive,
+    _bfd_bool_bfd_false_error
+  },
+  {                            /* bfd_write_contents.  */
+    _bfd_bool_bfd_false_error,
+    coff_write_object_contents,
+    _bfd_write_archive_contents,
+    _bfd_bool_bfd_false_error
+  },
 
   BFD_JUMP_TABLE_GENERIC (coff),
   BFD_JUMP_TABLE_COPY (coff),
@@ -815,3 +824,76 @@ const bfd_target
 
   COFF_SWAP_TABLE
 };
+
+/* Entry for big object files.  */
+
+#ifdef COFF_WITH_PE_BIGOBJ
+const bfd_target
+  TARGET_SYM_BIG =
+{
+  TARGET_NAME_BIG,
+  bfd_target_coff_flavour,
+  BFD_ENDIAN_LITTLE,           /* Data byte order is little.  */
+  BFD_ENDIAN_LITTLE,           /* Header byte order is little.  */
+
+  (HAS_RELOC | EXEC_P          /* Object flags.  */
+   | HAS_LINENO | HAS_DEBUG
+   | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS),
+
+  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags.  */
+#if defined(COFF_WITH_PE)
+   | SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
+#endif
+   | SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
+
+#ifdef TARGET_UNDERSCORE
+  TARGET_UNDERSCORE,           /* Leading underscore.  */
+#else
+  0,                           /* Leading underscore.  */
+#endif
+  '/',                         /* Ar_pad_char.  */
+  15,                          /* Ar_max_namelen.  */
+  0,                           /* match priority.  */
+
+  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+     bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data.  */
+  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+     bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Hdrs.  */
+
+  /* Note that we allow an object file to be treated as a core file as well.  */
+  {                            /* bfd_check_format.  */
+    _bfd_dummy_target,
+    amd64coff_object_p,
+    bfd_generic_archive_p,
+    amd64coff_object_p
+  },
+  {                            /* bfd_set_format.  */
+    _bfd_bool_bfd_false_error,
+    coff_mkobject,
+    _bfd_generic_mkarchive,
+    _bfd_bool_bfd_false_error
+  },
+  {                            /* bfd_write_contents.  */
+    _bfd_bool_bfd_false_error,
+    coff_write_object_contents,
+    _bfd_write_archive_contents,
+    _bfd_bool_bfd_false_error
+  },
+
+  BFD_JUMP_TABLE_GENERIC (coff),
+  BFD_JUMP_TABLE_COPY (coff),
+  BFD_JUMP_TABLE_CORE (_bfd_nocore),
+  BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
+  BFD_JUMP_TABLE_SYMBOLS (coff),
+  BFD_JUMP_TABLE_RELOCS (coff),
+  BFD_JUMP_TABLE_WRITE (coff),
+  BFD_JUMP_TABLE_LINK (coff),
+  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+  NULL,
+
+  &bigobj_swap_table
+};
+#endif
\ No newline at end of file
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