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Fix illegal memory access parsing a corrupt MACH-O format file.
[deliverable/binutils-gdb.git] / bfd / elf64-bpf.c
diff --git a/bfd/elf64-bpf.c b/bfd/elf64-bpf.c
index d5a160f8f14dfcad4a2562fcf02e2ad786f40bde..28c1543c0b696bf2be83575cbd8e4750640075e2 100644 (file)
--- a/bfd/elf64-bpf.c
+++ b/bfd/elf64-bpf.c
@@ -1,5 +1,5 @@
 /* Linux bpf specific support for 64-bit ELF
-   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
    Contributed by Oracle Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
@@ -42,204 +42,204 @@ static reloc_howto_type bpf_elf_howto_table [] =
         0,                     /* rightshift */
         3,                     /* size (0 = byte, 1 = short, 2 = long) */
         0,                     /* bitsize */
-        FALSE,                 /* pc_relative */
+        false,                 /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_dont, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_NONE",          /* name */
-        FALSE,                 /* partial_inplace */
+        false,                 /* partial_inplace */
         0,                     /* src_mask */
         0,                     /* dst_mask */
-        FALSE),                /* pcrel_offset */
+        false),                /* pcrel_offset */
 
   /* 64-immediate in LDDW instruction.  */
   HOWTO (R_BPF_INSN_64,                /* type */
         0,                     /* rightshift */
         4,                     /* size (0 = byte, 1 = short, 2 = long) */
         64,                    /* bitsize */
-        FALSE,                 /* pc_relative */
+        false,                 /* pc_relative */
         32,                    /* bitpos */
         complain_overflow_signed, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_INSN_64",       /* name */
-        TRUE,                  /* partial_inplace */
+        true,                  /* partial_inplace */
         MINUS_ONE,             /* src_mask */
         MINUS_ONE,             /* dst_mask */
-        TRUE),                 /* pcrel_offset */
+        true),                 /* pcrel_offset */
 
   /* 32-immediate in many instructions.  */
   HOWTO (R_BPF_INSN_32,                /* type */
         0,                     /* rightshift */
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
         32,                    /* bitsize */
-        FALSE,                 /* pc_relative */
+        false,                 /* pc_relative */
         32,                    /* bitpos */
         complain_overflow_signed, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_INSN_32",       /* name */
-        TRUE,                  /* partial_inplace */
+        true,                  /* partial_inplace */
         0xffffffff,            /* src_mask */
         0xffffffff,            /* dst_mask */
-        TRUE),                 /* pcrel_offset */
+        true),                 /* pcrel_offset */
 
   /* 16-bit offsets in instructions.  */
   HOWTO (R_BPF_INSN_16,                /* type */
         0,                     /* rightshift */
         1,                     /* size (0 = byte, 1 = short, 2 = long) */
         16,                    /* bitsize */
-        FALSE,                 /* pc_relative */
+        false,                 /* pc_relative */
         16,                    /* bitpos */
         complain_overflow_signed, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_INSN_16",       /* name */
-        TRUE,                  /* partial_inplace */
+        true,                  /* partial_inplace */
         0x0000ffff,            /* src_mask */
         0x0000ffff,            /* dst_mask */
-        TRUE),                 /* pcrel_offset */
+        true),                 /* pcrel_offset */
 
   /* 16-bit PC-relative address in jump instructions.  */
   HOWTO (R_BPF_INSN_DISP16,    /* type */
         0,                     /* rightshift */
         1,                     /* size (0 = byte, 1 = short, 2 = long) */
         16,                    /* bitsize */
-        TRUE,                  /* pc_relative */
+        true,                  /* pc_relative */
         16,                    /* bitpos */
         complain_overflow_signed, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_INSN_DISP16",   /* name */
-        TRUE,                  /* partial_inplace */
+        true,                  /* partial_inplace */
         0xffff,                /* src_mask */
         0xffff,                /* dst_mask */
-        TRUE),                 /* pcrel_offset */
+        true),                 /* pcrel_offset */
 
   HOWTO (R_BPF_DATA_8_PCREL,
         0,                     /* rightshift */
         0,                     /* size (0 = byte, 1 = short, 2 = long) */
         8,                     /* bitsize */
-        TRUE,                  /* pc_relative */
+        true,                  /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_signed, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_8_PCREL",       /* name */
-        TRUE,                  /* partial_inplace */
+        true,                  /* partial_inplace */
         0xff,                  /* src_mask */
         0xff,                  /* dst_mask */
-        TRUE),                 /* pcrel_offset */
+        true),                 /* pcrel_offset */
 
   HOWTO (R_BPF_DATA_16_PCREL,
         0,                     /* rightshift */
         1,                     /* size (0 = byte, 1 = short, 2 = long) */
         16,                    /* bitsize */
-        TRUE,                  /* pc_relative */
+        true,                  /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_signed, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_16_PCREL",      /* name */
-        FALSE,                 /* partial_inplace */
+        false,                 /* partial_inplace */
         0xffff,                /* src_mask */
         0xffff,                /* dst_mask */
-        TRUE),                 /* pcrel_offset */
+        true),                 /* pcrel_offset */
 
   HOWTO (R_BPF_DATA_32_PCREL,
         0,                     /* rightshift */
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
         32,                    /* bitsize */
-        TRUE,                  /* pc_relative */
+        true,                  /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_signed, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_32_PCREL",      /* name */
-        FALSE,                 /* partial_inplace */
+        false,                 /* partial_inplace */
         0xffffffff,            /* src_mask */
         0xffffffff,            /* dst_mask */
-        TRUE),                 /* pcrel_offset */
+        true),                 /* pcrel_offset */
 
   HOWTO (R_BPF_DATA_8,
         0,                     /* rightshift */
         0,                     /* size (0 = byte, 1 = short, 2 = long) */
         8,                     /* bitsize */
-        FALSE,                 /* pc_relative */
+        false,                 /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_unsigned, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_DATA_8",        /* name */
-        TRUE,                  /* partial_inplace */
+        true,                  /* partial_inplace */
         0xff,                  /* src_mask */
         0xff,                  /* dst_mask */
-        FALSE),                /* pcrel_offset */
+        false),                /* pcrel_offset */
 
   HOWTO (R_BPF_DATA_16,
         0,                     /* rightshift */
         1,                     /* size (0 = byte, 1 = short, 2 = long) */
         16,                    /* bitsize */
-        FALSE,                 /* pc_relative */
+        false,                 /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_unsigned, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_DATA_16",       /* name */
-        FALSE,                 /* partial_inplace */
+        false,                 /* partial_inplace */
         0xffff,                /* src_mask */
         0xffff,                /* dst_mask */
-        FALSE),                /* pcrel_offset */
+        false),                /* pcrel_offset */
 
   /* 32-bit PC-relative address in call instructions.  */
   HOWTO (R_BPF_INSN_DISP32,    /* type */
         0,                     /* rightshift */
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
         32,                    /* bitsize */
-        TRUE,                  /* pc_relative */
+        true,                  /* pc_relative */
         32,                    /* bitpos */
         complain_overflow_signed, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_INSN_DISP32",   /* name */
-        TRUE,                  /* partial_inplace */
+        true,                  /* partial_inplace */
         0xffffffff,            /* src_mask */
         0xffffffff,            /* dst_mask */
-        TRUE),                 /* pcrel_offset */
+        true),                 /* pcrel_offset */
 
   /* 32-bit data.  */
   HOWTO (R_BPF_DATA_32,                /* type */
         0,                     /* rightshift */
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
         32,                    /* bitsize */
-        FALSE,                 /* pc_relative */
+        false,                 /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_bitfield, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_DATA_32",       /* name */
-        FALSE,                 /* partial_inplace */
+        false,                 /* partial_inplace */
         0xffffffff,            /* src_mask */
         0xffffffff,            /* dst_mask */
-        TRUE),                 /* pcrel_offset */
+        true),                 /* pcrel_offset */
 
   /* 64-bit data.  */
   HOWTO (R_BPF_DATA_64,                /* type */
         0,                     /* rightshift */
         4,                     /* size (0 = byte, 1 = short, 2 = long) */
         64,                    /* bitsize */
-        FALSE,                 /* pc_relative */
+        false,                 /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_bitfield, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_DATA_64",       /* name */
-        FALSE,                 /* partial_inplace */
+        false,                 /* partial_inplace */
         0,                     /* src_mask */
         MINUS_ONE,             /* dst_mask */
-        TRUE),                 /* pcrel_offset */
+        true),                 /* pcrel_offset */
 
   HOWTO (R_BPF_DATA_64_PCREL,
         0,                     /* rightshift */
         4,                     /* size (0 = byte, 1 = short, 2 = long) */
         64,                    /* bitsize */
-        TRUE,                  /* pc_relative */
+        true,                  /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_signed, /* complain_on_overflow */
         bpf_elf_generic_reloc, /* special_function */
         "R_BPF_64_PCREL",      /* name */
-        FALSE,                 /* partial_inplace */
+        false,                 /* partial_inplace */
         MINUS_ONE,             /* src_mask */
         MINUS_ONE,             /* dst_mask */
-        TRUE),                 /* pcrel_offset */
+        true),                 /* pcrel_offset */
 };
 #undef AHOW
 
@@ -312,7 +312,7 @@ bpf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
 
 /* Set the howto pointer for a bpf reloc.  */
 
-static bfd_boolean
+static bool
 bpf_info_to_howto (bfd *abfd, arelent *bfd_reloc,
                     Elf_Internal_Rela *elf_reloc)
 {
@@ -325,11 +325,11 @@ bpf_info_to_howto (bfd *abfd, arelent *bfd_reloc,
       _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
                           abfd, r_type);
       bfd_set_error (bfd_error_bad_value);
-      return FALSE;
+      return false;
     }
 
   bfd_reloc->howto = &bpf_elf_howto_table [r_type];
-  return TRUE;
+  return true;
 }
 
 /* Relocate an eBPF ELF section.
@@ -364,7 +364,7 @@ bpf_info_to_howto (bfd *abfd, arelent *bfd_reloc,
 
 #define sec_addr(sec) ((sec)->output_section->vma + (sec)->output_offset)
 
-static bfd_boolean
+static int
 bpf_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
                           struct bfd_link_info *info,
                           bfd *input_bfd,
@@ -417,9 +417,9 @@ bpf_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
        }
       else
        {
-         bfd_boolean warned ATTRIBUTE_UNUSED;
-         bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED;
-         bfd_boolean ignored ATTRIBUTE_UNUSED;
+         bool warned ATTRIBUTE_UNUSED;
+         bool unresolved_reloc ATTRIBUTE_UNUSED;
+         bool ignored ATTRIBUTE_UNUSED;
 
          RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
                                   r_symndx, symtab_hdr, sym_hashes,
@@ -545,7 +545,7 @@ bpf_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
 
            case bfd_reloc_undefined:
              (*info->callbacks->undefined_symbol)
-               (info, name, input_bfd, input_section, rel->r_offset, TRUE);
+               (info, name, input_bfd, input_section, rel->r_offset, true);
              break;
 
            case bfd_reloc_outofrange:
@@ -572,20 +572,20 @@ bpf_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
        }
     }
 
-  return TRUE;
+  return true;
 }
 
 /* Merge backend specific data from an object file to the output
    object file when linking.  */
 
-static bfd_boolean
+static bool
 elf64_bpf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
 {
   /* Check if we have the same endianness.  */
   if (! _bfd_generic_verify_endian_match (ibfd, info))
-    return FALSE;
+    return false;
 
-  return TRUE;
+  return true;
 }
 
 /* A generic howto special function for installing BPF relocations.
GDB Binutils - Deliverables
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