/* Mach-O support for BFD.
- Copyright 2011
- Free Software Foundation, Inc.
+ Copyright (C) 2011-2019 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
};
#define BFD_MACH_O_RELENT_SIZE 8
+/* Relocations are based on 'address' being a section offset and an assumption
+ that sections are never more than 2^24-1 bytes in size. Relocation data
+ also carry information on type/size/PC-relative/extern and whether scattered
+ or not [stored in the MSB of the r_address]. */
+
+#define BFD_MACH_O_SR_SCATTERED 0x80000000
+
+/* For a non-scattered reloc, the relocation info is found in r_symbolnum.
+ Bytes 1 to 3 contain the symbol number (0xffffff, in a non-scattered PAIR).
+ Byte 4 contains the relocation info - but with differing bit-positions
+ dependent on target endian-ness - as below. */
+
+#define BFD_MACH_O_LE_PCREL 0x01
+#define BFD_MACH_O_LE_LENGTH_SHIFT 1
+#define BFD_MACH_O_LE_EXTERN 0x08
+#define BFD_MACH_O_LE_TYPE_SHIFT 4
+
+#define BFD_MACH_O_BE_PCREL 0x80
+#define BFD_MACH_O_BE_LENGTH_SHIFT 5
+#define BFD_MACH_O_BE_EXTERN 0x10
+#define BFD_MACH_O_BE_TYPE_SHIFT 0
+
+/* The field sizes are the same for both BE and LE. */
+#define BFD_MACH_O_LENGTH_MASK 0x03
+#define BFD_MACH_O_TYPE_MASK 0x0f
+
+/* For a scattered reloc entry the info is contained in r_address. There
+ is no need to discriminate on target endian-ness, since the design was
+ arranged to produce the same layout on both. Scattered relocations are
+ only used for local items, therefore there is no 'extern' field. */
+
+#define BFD_MACH_O_SR_PCREL 0x40000000
+#define BFD_MACH_O_GET_SR_LENGTH(s) (((s) >> 28) & 0x3)
+#define BFD_MACH_O_GET_SR_TYPE(s) (((s) >> 24) & 0x0f)
+#define BFD_MACH_O_GET_SR_ADDRESS(s) ((s) & 0x00ffffff)
+#define BFD_MACH_O_SET_SR_LENGTH(l) (((l) & 0x3) << 28)
+#define BFD_MACH_O_SET_SR_TYPE(t) (((t) & 0xf) << 24)
+#define BFD_MACH_O_SET_SR_ADDRESS(s) ((s) & 0x00ffffff)
+
struct mach_o_symtab_command_external
{
- unsigned char symoff[4];
- unsigned char nsyms[4];
- unsigned char stroff[4];
- unsigned char strsize[4];
+ unsigned char symoff[4]; /* File offset of the symbol table. */
+ unsigned char nsyms[4]; /* Number of symbols. */
+ unsigned char stroff[4]; /* File offset of the string table. */
+ unsigned char strsize[4]; /* String table size. */
};
struct mach_o_nlist_external
unsigned char export_size[4];
};
+struct mach_o_prebound_dylib_command_external
+{
+ unsigned char name[4];
+ unsigned char nmodules[4];
+ unsigned char linked_modules[4];
+};
+
+struct mach_o_prebind_cksum_command_external
+{
+ unsigned char cksum[4];
+};
+
+struct mach_o_twolevel_hints_command_external
+{
+ unsigned char offset[4];
+ unsigned char nhints[4];
+};
+
+struct mach_o_version_min_command_external
+{
+ unsigned char version[4];
+ unsigned char sdk[4];
+};
+
+struct mach_o_encryption_info_command_external
+{
+ unsigned char cryptoff[4]; /* File offset of the encrypted area. */
+ unsigned char cryptsize[4]; /* Size of the encrypted area. */
+ unsigned char cryptid[4]; /* Encryption method. */
+};
+
+struct mach_o_encryption_info_64_command_external
+{
+ unsigned char cryptoff[4]; /* File offset of the encrypted area. */
+ unsigned char cryptsize[4]; /* Size of the encrypted area. */
+ unsigned char cryptid[4]; /* Encryption method. */
+ unsigned char pad[4]; /* Pad to make struct size a multiple of 8. */
+};
+
+struct mach_o_fvmlib_command_external
+{
+ unsigned char name[4]; /* Offset of the name. */
+ unsigned char minor_version[4];
+ unsigned char header_addr[4];
+};
+
+struct mach_o_entry_point_command_external
+{
+ unsigned char entryoff[8]; /* File offset of the entry point. */
+ unsigned char stacksize[8]; /* Initial stack size, if no null. */
+};
+
+struct mach_o_source_version_command_external
+{
+ unsigned char version[8]; /* Version A.B.C.D.E, with 10 bits for B-E,
+ and 24 bits for A. */
+};
+
+struct mach_o_note_command_external
+{
+ unsigned char data_owner[16]; /* Owner name for this note. */
+ unsigned char offset[8]; /* File offset of the note. */
+ unsigned char size[8]; /* Length of the note. */
+};
+
+struct mach_o_build_version_command_external
+{
+ unsigned char platform[4]; /* Target platform. */
+ unsigned char minos[4]; /* X.Y.Z is encoded in nibbles xxxx.yy.zz. */
+ unsigned char sdk[4]; /* X.Y.Z is encoded in nibbles xxxx.yy.zz. */
+ unsigned char ntools[4]; /* Number of tool entries following this. */
+};
+
+/* The LD_DATA_IN_CODE command use a linkedit_data_command that points to
+ a table of entries. */
+
+struct mach_o_data_in_code_entry_external
+{
+ unsigned char offset[4]; /* Offset from the mach_header. */
+ unsigned char length[2]; /* Number of bytes. */
+ unsigned char kind[2]; /* Kind. See BFD_MACH_O_DICE_ values. */
+};
+
+struct mach_o_linker_option_command_external
+{
+ unsigned char count[4]; /* Number of strings. */
+ /* COUNT null terminated UTF-8 strings, with 0 at the end for padding. */
+};
+
struct mach_o_fat_header_external
{
unsigned char magic[4];
unsigned char align[4]; /* Power of 2. */
};
+struct mach_o_dyld_cache_header_external
+{
+ unsigned char magic[16];
+
+ unsigned char mapping_offset[4];
+ unsigned char mapping_count[4];
+ unsigned char images_offset[4];
+ unsigned char images_count[4];
+
+ unsigned char dyld_base_address[8];
+
+ unsigned char code_signature_offset[8];
+ unsigned char code_signature_size[8];
+
+ unsigned char slide_info_offset[8];
+ unsigned char slide_info_size[8];
+
+ unsigned char local_symbols_offset[8];
+ unsigned char local_symbols_size[8];
+};
+
+struct mach_o_dyld_cache_mapping_info_external
+{
+ unsigned char address[8];
+ unsigned char size[8];
+ unsigned char file_offset[8];
+ unsigned char max_prot[4];
+ unsigned char init_prot[4];
+};
+
+struct mach_o_dyld_cache_image_info_external
+{
+ unsigned char address[8];
+ unsigned char mtime[8];
+ unsigned char inode[8];
+ unsigned char path_file_offset[4];
+ unsigned char pad[4];
+};
+
+
#endif /* _MACH_O_EXTERNAL_H */
projects / deliverable / binutils-gdb.git / blobdiff