-/* `a.out' object-file definitions, including extensions to 64-bit fields */
+/* `a.out' object-file definitions, including extensions to 64-bit fields
+
+ Copyright (C) 1999-2019 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#ifndef __A_OUT_64_H__
#define __A_OUT_64_H__
-/* This is the layout on disk of the 32-bit or 64-bit exec header. */
+#ifndef BYTES_IN_WORD
+#define BYTES_IN_WORD 4
+#endif
+
+/* This is the layout on disk of the 32-bit or 64-bit exec header. */
#ifndef external_exec
struct external_exec
{
- bfd_byte e_info[4]; /* magic number and stuff */
- bfd_byte e_text[BYTES_IN_WORD]; /* length of text section in bytes */
- bfd_byte e_data[BYTES_IN_WORD]; /* length of data section in bytes */
- bfd_byte e_bss[BYTES_IN_WORD]; /* length of bss area in bytes */
- bfd_byte e_syms[BYTES_IN_WORD]; /* length of symbol table in bytes */
- bfd_byte e_entry[BYTES_IN_WORD]; /* start address */
- bfd_byte e_trsize[BYTES_IN_WORD]; /* length of text relocation info */
- bfd_byte e_drsize[BYTES_IN_WORD]; /* length of data relocation info */
+ bfd_byte e_info[4]; /* Magic number and stuff. */
+ bfd_byte e_text[BYTES_IN_WORD]; /* Length of text section in bytes. */
+ bfd_byte e_data[BYTES_IN_WORD]; /* Length of data section in bytes. */
+ bfd_byte e_bss[BYTES_IN_WORD]; /* Length of bss area in bytes. */
+ bfd_byte e_syms[BYTES_IN_WORD]; /* Length of symbol table in bytes. */
+ bfd_byte e_entry[BYTES_IN_WORD]; /* Start address. */
+ bfd_byte e_trsize[BYTES_IN_WORD]; /* Length of text relocation info. */
+ bfd_byte e_drsize[BYTES_IN_WORD]; /* Length of data relocation info. */
};
#define EXEC_BYTES_SIZE (4 + BYTES_IN_WORD * 7)
-/* Magic numbers for a.out files */
+/* Magic numbers for a.out files. */
#if ARCH_SIZE==64
-#define OMAGIC 0x1001 /* Code indicating object file */
+#define OMAGIC 0x1001 /* Code indicating object file. */
#define ZMAGIC 0x1002 /* Code indicating demand-paged executable. */
#define NMAGIC 0x1003 /* Code indicating pure executable. */
&& N_MAGIC(x) != NMAGIC \
&& N_MAGIC(x) != ZMAGIC)
#else
-#define OMAGIC 0407 /* ...object file or impure executable. */
+#define OMAGIC 0407 /* Object file or impure executable. */
#define NMAGIC 0410 /* Code indicating pure executable. */
#define ZMAGIC 0413 /* Code indicating demand-paged executable. */
+#define BMAGIC 0415 /* Used by a b.out object. */
/* This indicates a demand-paged executable with the header in the text.
- As far as I know it is only used by 386BSD and/or BSDI. */
+ It is used by 386BSD (and variants) and Linux, at least. */
+#ifndef QMAGIC
#define QMAGIC 0314
-#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \
+#endif
+# ifndef N_BADMAG
+# define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \
&& N_MAGIC(x) != NMAGIC \
&& N_MAGIC(x) != ZMAGIC \
&& N_MAGIC(x) != QMAGIC)
+# endif /* N_BADMAG */
#endif
#endif
#define N_IS_QMAGIC(x) (0)
#endif
-/* The difference between PAGE_SIZE and N_SEGSIZE is that PAGE_SIZE is
- the the finest granularity at which you can page something, thus it
+/* The difference between TARGET_PAGE_SIZE and N_SEGSIZE is that TARGET_PAGE_SIZE is
+ the finest granularity at which you can page something, thus it
controls the padding (if any) before the text segment of a ZMAGIC
file. N_SEGSIZE is the resolution at which things can be marked as
read-only versus read/write, so it controls the padding between the
- text segment and the data segment. These are the same for most
- machines, but different for sun3. */
+ text segment and the data segment (in memory; on disk the padding
+ between them is TARGET_PAGE_SIZE). TARGET_PAGE_SIZE and N_SEGSIZE are the same
+ for most machines, but different for sun3. */
/* By default, segment size is constant. But some machines override this
to be a function of the a.out header (e.g. machine type). */
* If N_HEADER_IN_TEXT(x) is false (which defaults to being the case when
the entry point is less than EXEC_BYTES_SIZE into a page (e.g. page
aligned)): (padding is needed so that text can start at a page boundary)
- start at TEXT_START_ADDR, offset PAGE_SIZE, size as stated.
+ start at TEXT_START_ADDR, offset TARGET_PAGE_SIZE, size as stated.
Specific configurations may want to hardwire N_HEADER_IN_TEXT,
for efficiency or to allow people to play games with the entry point.
the entry point, perhaps with the ld -e flag.)
* QMAGIC is always like a ZMAGIC for which N_HEADER_IN_TEXT is true,
- and for which the starting address is PAGE_SIZE (or should this be
- SEGMENT_SIZE?) (TEXT_START_ADDR only applies to ZMAGIC, not to QMAGIC).
- */
+ and for which the starting address is TARGET_PAGE_SIZE (or should this be
+ SEGMENT_SIZE?) (TEXT_START_ADDR only applies to ZMAGIC, not to QMAGIC). */
/* This macro is only relevant for ZMAGIC files; QMAGIC always has the header
in the text. */
#ifndef N_HEADER_IN_TEXT
-#define N_HEADER_IN_TEXT(x) (((x).a_entry & (PAGE_SIZE-1)) >= EXEC_BYTES_SIZE)
+#define N_HEADER_IN_TEXT(x) \
+ (((x)->a_entry & (TARGET_PAGE_SIZE-1)) >= EXEC_BYTES_SIZE)
#endif
/* Sun shared libraries, not linux. This macro is only relevant for ZMAGIC
files. */
#ifndef N_SHARED_LIB
-#define N_SHARED_LIB(x) ((x).a_entry < TEXT_START_ADDR)
+#define N_SHARED_LIB(x) (0)
#endif
+/* Returning 0 not TEXT_START_ADDR for OMAGIC and NMAGIC is based on
+ the assumption that we are dealing with a .o file, not an
+ executable. This is necessary for OMAGIC (but means we don't work
+ right on the output from ld -N); more questionable for NMAGIC. */
+
#ifndef N_TXTADDR
#define N_TXTADDR(x) \
- (/* The address of a QMAGIC file is always one page in, */ \
- /* with the header in the text. */ \
- N_IS_QMAGIC (x) ? PAGE_SIZE + EXEC_BYTES_SIZE : \
- N_MAGIC(x) != ZMAGIC ? 0 : /* object file or NMAGIC */\
- N_SHARED_LIB(x) ? 0 : \
- N_HEADER_IN_TEXT(x) ? \
- TEXT_START_ADDR + EXEC_BYTES_SIZE : /* no padding */\
- TEXT_START_ADDR /* a page of padding */\
- )
+ (/* The address of a QMAGIC file is always one page in, \
+ with the header in the text. */ \
+ N_IS_QMAGIC (x) \
+ ? (bfd_vma) TARGET_PAGE_SIZE + EXEC_BYTES_SIZE \
+ : (N_MAGIC (x) != ZMAGIC \
+ ? (bfd_vma) 0 /* Object file or NMAGIC. */ \
+ : (N_SHARED_LIB (x) \
+ ? (bfd_vma) 0 \
+ : (N_HEADER_IN_TEXT (x) \
+ ? (bfd_vma) TEXT_START_ADDR + EXEC_BYTES_SIZE \
+ : (bfd_vma) TEXT_START_ADDR))))
+#endif
+
+/* If N_HEADER_IN_TEXT is not true for ZMAGIC, there is some padding
+ to make the text segment start at a certain boundary. For most
+ systems, this boundary is TARGET_PAGE_SIZE. But for Linux, in the
+ time-honored tradition of crazy ZMAGIC hacks, it is 1024 which is
+ not what TARGET_PAGE_SIZE needs to be for QMAGIC. */
+
+#ifndef ZMAGIC_DISK_BLOCK_SIZE
+#define ZMAGIC_DISK_BLOCK_SIZE TARGET_PAGE_SIZE
#endif
+#define N_DISK_BLOCK_SIZE(x) \
+ (N_MAGIC(x) == ZMAGIC ? ZMAGIC_DISK_BLOCK_SIZE : TARGET_PAGE_SIZE)
+
/* Offset in an a.out of the start of the text section. */
#ifndef N_TXTOFF
-#define N_TXTOFF(x) \
- (/* For {O,N,Q}MAGIC, no padding. */ \
- N_MAGIC(x) != ZMAGIC ? EXEC_BYTES_SIZE : \
- N_SHARED_LIB(x) ? 0 : \
- N_HEADER_IN_TEXT(x) ? \
- EXEC_BYTES_SIZE : /* no padding */\
- PAGE_SIZE /* a page of padding */\
- )
+#define N_TXTOFF(x) \
+ (/* For {O,N,Q}MAGIC, no padding. */ \
+ N_MAGIC (x) != ZMAGIC \
+ ? EXEC_BYTES_SIZE \
+ : (N_SHARED_LIB (x) \
+ ? 0 \
+ : (N_HEADER_IN_TEXT (x) \
+ ? EXEC_BYTES_SIZE /* No padding. */ \
+ : ZMAGIC_DISK_BLOCK_SIZE /* A page of padding. */)))
#endif
/* Size of the text section. It's always as stated, except that we
offset it to `undo' the adjustment to N_TXTADDR and N_TXTOFF
exec header to be part of the text segment.) */
#ifndef N_TXTSIZE
#define N_TXTSIZE(x) \
- (/* For QMAGIC, we don't consider the header part of the text section. */\
- N_IS_QMAGIC (x) ? (x).a_text - EXEC_BYTES_SIZE : \
- (N_MAGIC(x) != ZMAGIC || N_SHARED_LIB(x)) ? (x).a_text : \
- N_HEADER_IN_TEXT(x) ? \
- (x).a_text - EXEC_BYTES_SIZE: /* no padding */\
- (x).a_text /* a page of padding */\
- )
+ (/* For QMAGIC, we don't consider the header part of the text section. */\
+ N_IS_QMAGIC (x) \
+ ? (x)->a_text - EXEC_BYTES_SIZE \
+ : ((N_MAGIC (x) != ZMAGIC || N_SHARED_LIB (x)) \
+ ? (x)->a_text \
+ : (N_HEADER_IN_TEXT (x) \
+ ? (x)->a_text - EXEC_BYTES_SIZE /* No padding. */ \
+ : (x)->a_text /* A page of padding. */ )))
#endif
/* The address of the data segment in virtual memory.
It is the text segment address, plus text segment size, rounded
- up to a N_SEGSIZE boundary for pure or pageable files. */
+ up to a N_SEGSIZE boundary for pure or pageable files. */
#ifndef N_DATADDR
#define N_DATADDR(x) \
- (N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+N_TXTSIZE(x)) \
- : (N_SEGSIZE(x) + ((N_TXTADDR(x)+N_TXTSIZE(x)-1) & ~(N_SEGSIZE(x)-1))))
+ (N_MAGIC (x) == OMAGIC \
+ ? (N_TXTADDR (x) + N_TXTSIZE (x)) \
+ : (N_SEGSIZE (x) + ((N_TXTADDR (x) + N_TXTSIZE (x) - 1) \
+ & ~ (bfd_vma) (N_SEGSIZE (x) - 1))))
#endif
/* The address of the BSS segment -- immediately after the data segment. */
-#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
+#define N_BSSADDR(x) (N_DATADDR (x) + (x)->a_data)
/* Offsets of the various portions of the file after the text segment. */
-/* For {N,Q,Z}MAGIC, there is padding to make the data segment start
- on a page boundary. Most of the time the a_text field (and thus
- N_TXTSIZE) already contains this padding. But if it doesn't (I
- think maybe this happens on BSDI and/or 386BSD), then add it. */
+/* For {Q,Z}MAGIC, there is padding to make the data segment start on
+ a page boundary. Most of the time the a_text field (and thus
+ N_TXTSIZE) already contains this padding. It is possible that for
+ BSDI and/or 386BSD it sometimes doesn't contain the padding, and
+ perhaps we should be adding it here. But this seems kind of
+ questionable and probably should be BSDI/386BSD-specific if we do
+ do it.
+
+ For NMAGIC (at least for hp300 BSD, probably others), there is
+ padding in memory only, not on disk, so we must *not* ever pad here
+ for NMAGIC. */
#ifndef N_DATOFF
-#define N_DATOFF(x) \
- (N_MAGIC(x) == OMAGIC ? N_TXTOFF(x) + N_TXTSIZE(x) : \
- N_SEGSIZE(x) + ((N_TXTOFF(x) + N_TXTSIZE(x) - 1) & ~(N_SEGSIZE(x) - 1)))
+#define N_DATOFF(x) (N_TXTOFF (x) + N_TXTSIZE (x))
#endif
-
#ifndef N_TRELOFF
-#define N_TRELOFF(x) ( N_DATOFF(x) + (x).a_data )
+#define N_TRELOFF(x) (N_DATOFF (x) + (x)->a_data)
#endif
#ifndef N_DRELOFF
-#define N_DRELOFF(x) ( N_TRELOFF(x) + (x).a_trsize )
+#define N_DRELOFF(x) (N_TRELOFF (x) + (x)->a_trsize)
#endif
#ifndef N_SYMOFF
-#define N_SYMOFF(x) ( N_DRELOFF(x) + (x).a_drsize )
+#define N_SYMOFF(x) (N_DRELOFF (x) + (x)->a_drsize)
#endif
#ifndef N_STROFF
-#define N_STROFF(x) ( N_SYMOFF(x) + (x).a_syms )
+#define N_STROFF(x) (N_SYMOFF (x) + (x)->a_syms)
#endif
\f
/* Symbols */
#ifndef external_nlist
-struct external_nlist {
- bfd_byte e_strx[BYTES_IN_WORD]; /* index into string table of name */
- bfd_byte e_type[1]; /* type of symbol */
- bfd_byte e_other[1]; /* misc info (usually empty) */
- bfd_byte e_desc[2]; /* description field */
- bfd_byte e_value[BYTES_IN_WORD]; /* value of symbol */
+struct external_nlist
+{
+ bfd_byte e_strx[BYTES_IN_WORD]; /* Index into string table of name. */
+ bfd_byte e_type[1]; /* Type of symbol. */
+ bfd_byte e_other[1]; /* Misc info (usually empty). */
+ bfd_byte e_desc[2]; /* Description field. */
+ bfd_byte e_value[BYTES_IN_WORD]; /* Value of symbol. */
};
#define EXTERNAL_NLIST_SIZE (BYTES_IN_WORD+4+BYTES_IN_WORD)
#endif
-struct internal_nlist {
- unsigned long n_strx; /* index into string table of name */
- unsigned char n_type; /* type of symbol */
- unsigned char n_other; /* misc info (usually empty) */
- unsigned short n_desc; /* description field */
- bfd_vma n_value; /* value of symbol */
+struct internal_nlist
+{
+ unsigned long n_strx; /* Index into string table of name. */
+ unsigned char n_type; /* Type of symbol. */
+ unsigned char n_other; /* Misc info (usually empty). */
+ unsigned short n_desc; /* Description field. */
+ bfd_vma n_value; /* Value of symbol. */
};
/* The n_type field is the symbol type, containing: */
-#define N_UNDF 0 /* Undefined symbol */
-#define N_ABS 2 /* Absolute symbol -- defined at particular addr */
-#define N_TEXT 4 /* Text sym -- defined at offset in text seg */
-#define N_DATA 6 /* Data sym -- defined at offset in data seg */
-#define N_BSS 8 /* BSS sym -- defined at offset in zero'd seg */
-#define N_COMM 0x12 /* Common symbol (visible after shared lib dynlink) */
-#define N_FN 0x1f /* File name of .o file */
-#define N_FN_SEQ 0x0C /* N_FN from Sequent compilers (sigh) */
+#define N_UNDF 0 /* Undefined symbol. */
+#define N_ABS 2 /* Absolute symbol -- defined at particular addr. */
+#define N_TEXT 4 /* Text sym -- defined at offset in text seg. */
+#define N_DATA 6 /* Data sym -- defined at offset in data seg. */
+#define N_BSS 8 /* BSS sym -- defined at offset in zero'd seg. */
+#define N_COMM 0x12 /* Common symbol (visible after shared lib dynlink). */
+#define N_FN 0x1f /* File name of .o file. */
+#define N_FN_SEQ 0x0C /* N_FN from Sequent compilers (sigh). */
/* Note: N_EXT can only be usefully OR-ed with N_UNDF, N_ABS, N_TEXT,
N_DATA, or N_BSS. When the low-order bit of other types is set,
(e.g. N_WARNING versus N_FN), they are two different types. */
-#define N_EXT 1 /* External symbol (as opposed to local-to-this-file) */
+#define N_EXT 1 /* External symbol (as opposed to local-to-this-file). */
#define N_TYPE 0x1e
-#define N_STAB 0xe0 /* If any of these bits are on, it's a debug symbol */
+#define N_STAB 0xe0 /* If any of these bits are on, it's a debug symbol. */
#define N_INDR 0x0a
in that it can satisfy undefined external references. */
/* These appear as input to LD, in a .o file. */
-#define N_SETA 0x14 /* Absolute set element symbol */
-#define N_SETT 0x16 /* Text set element symbol */
-#define N_SETD 0x18 /* Data set element symbol */
-#define N_SETB 0x1A /* Bss set element symbol */
+#define N_SETA 0x14 /* Absolute set element symbol. */
+#define N_SETT 0x16 /* Text set element symbol. */
+#define N_SETD 0x18 /* Data set element symbol. */
+#define N_SETB 0x1A /* Bss set element symbol. */
/* This is output from LD. */
#define N_SETV 0x1C /* Pointer to set vector in data area. */
#define N_WARNING 0x1e
+/* Weak symbols. These are a GNU extension to the a.out format. The
+ semantics are those of ELF weak symbols. Weak symbols are always
+ externally visible. The N_WEAK? values are squeezed into the
+ available slots. The value of a N_WEAKU symbol is 0. The values
+ of the other types are the definitions. */
+#define N_WEAKU 0x0d /* Weak undefined symbol. */
+#define N_WEAKA 0x0e /* Weak absolute symbol. */
+#define N_WEAKT 0x0f /* Weak text symbol. */
+#define N_WEAKD 0x10 /* Weak data symbol. */
+#define N_WEAKB 0x11 /* Weak bss symbol. */
+
/* Relocations
There are two types of relocation flavours for a.out systems,
instructions. Eg, on the 68k, each move instruction can reference
the target with a displacement of 16 or 32 bits. On the sparc, move
instructions use an offset of 14 bits, so the offset is stored in
- the reloc field, and the data in the section is ignored.
-*/
+ the reloc field, and the data in the section is ignored. */
/* This structure describes a single relocation to be performed.
The text-relocation section of the file is a vector of these structures,
all of which apply to the text section.
Likewise, the data-relocation section applies to the data section. */
-struct reloc_std_external {
- bfd_byte r_address[BYTES_IN_WORD]; /* offset of of data to relocate */
- bfd_byte r_index[3]; /* symbol table index of symbol */
- bfd_byte r_type[1]; /* relocation type */
+struct reloc_std_external
+{
+ bfd_byte r_address[BYTES_IN_WORD]; /* Offset of data to relocate. */
+ bfd_byte r_index[3]; /* Symbol table index of symbol. */
+ bfd_byte r_type[1]; /* Relocation type. */
};
-#define RELOC_STD_BITS_PCREL_BIG 0x80
-#define RELOC_STD_BITS_PCREL_LITTLE 0x01
+#define RELOC_STD_BITS_PCREL_BIG ((unsigned int) 0x80)
+#define RELOC_STD_BITS_PCREL_LITTLE ((unsigned int) 0x01)
-#define RELOC_STD_BITS_LENGTH_BIG 0x60
-#define RELOC_STD_BITS_LENGTH_SH_BIG 5 /* To shift to units place */
-#define RELOC_STD_BITS_LENGTH_LITTLE 0x06
+#define RELOC_STD_BITS_LENGTH_BIG ((unsigned int) 0x60)
+#define RELOC_STD_BITS_LENGTH_SH_BIG 5
+#define RELOC_STD_BITS_LENGTH_LITTLE ((unsigned int) 0x06)
#define RELOC_STD_BITS_LENGTH_SH_LITTLE 1
-#define RELOC_STD_BITS_EXTERN_BIG 0x10
-#define RELOC_STD_BITS_EXTERN_LITTLE 0x08
+#define RELOC_STD_BITS_EXTERN_BIG ((unsigned int) 0x10)
+#define RELOC_STD_BITS_EXTERN_LITTLE ((unsigned int) 0x08)
-#define RELOC_STD_BITS_BASEREL_BIG 0x08
-#define RELOC_STD_BITS_BASEREL_LITTLE 0x08
+#define RELOC_STD_BITS_BASEREL_BIG ((unsigned int) 0x08)
+#define RELOC_STD_BITS_BASEREL_LITTLE ((unsigned int) 0x10)
-#define RELOC_STD_BITS_JMPTABLE_BIG 0x04
-#define RELOC_STD_BITS_JMPTABLE_LITTLE 0x04
+#define RELOC_STD_BITS_JMPTABLE_BIG ((unsigned int) 0x04)
+#define RELOC_STD_BITS_JMPTABLE_LITTLE ((unsigned int) 0x20)
-#define RELOC_STD_BITS_RELATIVE_BIG 0x02
-#define RELOC_STD_BITS_RELATIVE_LITTLE 0x02
+#define RELOC_STD_BITS_RELATIVE_BIG ((unsigned int) 0x02)
+#define RELOC_STD_BITS_RELATIVE_LITTLE ((unsigned int) 0x40)
-#define RELOC_STD_SIZE (BYTES_IN_WORD + 3 + 1) /* Bytes per relocation entry */
+#define RELOC_STD_SIZE (BYTES_IN_WORD + 3 + 1) /* Bytes per relocation entry. */
struct reloc_std_internal
{
unsigned int r_extern:1;
/* The next three bits are for SunOS shared libraries, and seem to
be undocumented. */
- unsigned int r_baserel:1; /* Linkage table relative */
- unsigned int r_jmptable:1; /* pc-relative to jump table */
- unsigned int r_relative:1; /* "relative relocation" */
+ unsigned int r_baserel:1; /* Linkage table relative. */
+ unsigned int r_jmptable:1; /* pc-relative to jump table. */
+ unsigned int r_relative:1; /* "relative relocation". */
/* unused */
- unsigned int r_pad:1; /* Padding -- set to zero */
+ unsigned int r_pad:1; /* Padding -- set to zero. */
};
-/* EXTENDED RELOCS */
+/* EXTENDED RELOCS. */
-struct reloc_ext_external {
- bfd_byte r_address[BYTES_IN_WORD]; /* offset of of data to relocate */
- bfd_byte r_index[3]; /* symbol table index of symbol */
- bfd_byte r_type[1]; /* relocation type */
- bfd_byte r_addend[BYTES_IN_WORD]; /* datum addend */
+struct reloc_ext_external
+{
+ bfd_byte r_address[BYTES_IN_WORD]; /* Offset of data to relocate. */
+ bfd_byte r_index[3]; /* Symbol table index of symbol. */
+ bfd_byte r_type[1]; /* Relocation type. */
+ bfd_byte r_addend[BYTES_IN_WORD]; /* Datum addend. */
};
-#define RELOC_EXT_BITS_EXTERN_BIG 0x80
-#define RELOC_EXT_BITS_EXTERN_LITTLE 0x01
+#ifndef RELOC_EXT_BITS_EXTERN_BIG
+#define RELOC_EXT_BITS_EXTERN_BIG ((unsigned int) 0x80)
+#endif
+
+#ifndef RELOC_EXT_BITS_EXTERN_LITTLE
+#define RELOC_EXT_BITS_EXTERN_LITTLE ((unsigned int) 0x01)
+#endif
-#define RELOC_EXT_BITS_TYPE_BIG 0x1F
+#ifndef RELOC_EXT_BITS_TYPE_BIG
+#define RELOC_EXT_BITS_TYPE_BIG ((unsigned int) 0x1F)
+#endif
+
+#ifndef RELOC_EXT_BITS_TYPE_SH_BIG
#define RELOC_EXT_BITS_TYPE_SH_BIG 0
-#define RELOC_EXT_BITS_TYPE_LITTLE 0xF8
+#endif
+
+#ifndef RELOC_EXT_BITS_TYPE_LITTLE
+#define RELOC_EXT_BITS_TYPE_LITTLE ((unsigned int) 0xF8)
+#endif
+
+#ifndef RELOC_EXT_BITS_TYPE_SH_LITTLE
#define RELOC_EXT_BITS_TYPE_SH_LITTLE 3
+#endif
-/* Bytes per relocation entry */
+/* Bytes per relocation entry. */
#define RELOC_EXT_SIZE (BYTES_IN_WORD + 3 + 1 + BYTES_IN_WORD)
enum reloc_type
{
- /* simple relocations */
+ /* Simple relocations. */
RELOC_8, /* data[0:7] = addend + sv */
RELOC_16, /* data[0:15] = addend + sv */
RELOC_32, /* data[0:31] = addend + sv */
- /* pc-rel displacement */
+ /* PC-rel displacement. */
RELOC_DISP8, /* data[0:7] = addend - pc + sv */
RELOC_DISP16, /* data[0:15] = addend - pc + sv */
RELOC_DISP32, /* data[0:31] = addend - pc + sv */
- /* Special */
+ /* Special. */
RELOC_WDISP30, /* data[0:29] = (addend + sv - pc)>>2 */
RELOC_WDISP22, /* data[0:21] = (addend + sv - pc)>>2 */
RELOC_HI22, /* data[0:21] = (addend + sv)>>10 */
RELOC_LO10, /* data[0:9] = (addend + sv) */
RELOC_SFA_BASE,
RELOC_SFA_OFF13,
- /* P.I.C. (base-relative) */
+ /* P.I.C. (base-relative). */
RELOC_BASE10, /* Not sure - maybe we can do this the */
RELOC_BASE13, /* right way now */
RELOC_BASE22,
- /* for some sort of pc-rel P.I.C. (?) */
+ /* For some sort of pc-rel P.I.C. (?) */
RELOC_PC10,
RELOC_PC22,
- /* P.I.C. jump table */
+ /* P.I.C. jump table. */
RELOC_JMP_TBL,
- /* reputedly for shared libraries somehow */
+ /* Reputedly for shared libraries somehow. */
RELOC_SEGOFF16,
RELOC_GLOB_DAT,
RELOC_JMP_SLOT,
RELOC_11,
RELOC_WDISP2_14,
RELOC_WDISP19,
- RELOC_HHI22, /* data[0:21] = (addend + sv) >> 42 */
- RELOC_HLO10, /* data[0:9] = (addend + sv) >> 32 */
-
- /* 29K relocation types */
- RELOC_JUMPTARG,
- RELOC_CONST,
- RELOC_CONSTH,
-
- /* All the new ones I can think of *//*v9*/
-
- RELOC_64, /* data[0:63] = addend + sv *//*v9*/
- RELOC_DISP64, /* data[0:63] = addend - pc + sv *//*v9*/
- RELOC_WDISP21, /* data[0:20] = (addend + sv - pc)>>2 *//*v9*/
- RELOC_DISP21, /* data[0:20] = addend - pc + sv *//*v9*/
- RELOC_DISP14, /* data[0:13] = addend - pc + sv *//*v9*/
- /* Q .
- What are the other ones,
- Since this is a clean slate, can we throw away the ones we dont
- understand ? Should we sort the values ? What about using a
- microcode format like the 68k ?
- */
+
NO_RELOC
};
-struct reloc_internal {
- bfd_vma r_address; /* offset of of data to relocate */
- long r_index; /* symbol table index of symbol */
- enum reloc_type r_type; /* relocation type */
- bfd_vma r_addend; /* datum addend */
+struct reloc_internal
+{
+ bfd_vma r_address; /* Offset of data to relocate. */
+ long r_index; /* Symbol table index of symbol. */
+ enum reloc_type r_type; /* Relocation type. */
+ bfd_vma r_addend; /* Datum addend. */
};
/* Q.
Should the length of the string table be 4 bytes or 8 bytes ?
Q.
- What about archive indexes ?
-
- */
+ What about archive indexes ? */
#endif /* __A_OUT_64_H__ */
projects / deliverable / binutils-gdb.git / blobdiff