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19990502 sourceware import

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This commit is contained in:
Richard Henderson
1999-05-03 07:29:06 +00:00
commit a3acbf4694
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Sun Jun 28 11:33:48 1998 Peter Schauer <pes@regent.e-technik.tu-muenchen.de>
* stab.def: Add N_ALIAS from SunPro F77.
Mon Mar 11 12:15:52 1996 Ian Lance Taylor <ian@cygnus.com>
* stab.def: Use __define_stab_duplicate rather than __define_stab
for duplicate entries N_BROWS and N_MOD2.
* stab_gnu.h (__define_stab_duplicate): Define before including
stab.def.
Fri Oct 27 17:47:16 1995 Niklas Hallqvist <niklas@appli.se>
* aout64.h, host.h, hp300hpux.h, sun4.h: Changed PAGE_SIZE to
TARGET_PAGE_SIZE.
Tue Sep 12 12:07:02 1995 Ian Lance Taylor <ian@cygnus.com>
* sun4.h (struct internal_sun4_dynamic_link): Change all fields
from long to unsigned long.
Wed Jul 12 00:15:13 1995 Ken Raeburn <raeburn@kr-pc.cygnus.com>
* sun4.h (PAGE_SIZE): Undefine before defining.
Thu Jun 16 14:22:55 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
* aout64.h (BMAGIC): Define.
Sat Jun 11 16:16:09 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
Add weak symbols as an extension to a.out.
* aout64.h (N_WEAKU, N_WEAKA, N_WEAKT, N_WEAKD, N_WEAKB): Define.
* stab.def: Update symbol value table.
Thu Jun 2 17:13:38 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
* sun4.h (EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE): Correct from 28 to
24. Fix up ld_got comment.
Wed Mar 30 00:31:49 1994 Peter Schauer (pes@regent.e-technik.tu-muenchen.de)
* dynix3.h: Cleanup, adapt to current bfd version.
Sat Feb 26 10:25:53 1994 Ian Lance Taylor (ian@cygnus.com)
* aout64.h: Add casts to avoid warnings from SVR4 cc.
Fri Feb 11 12:56:04 1994 Stan Shebs (shebs@andros.cygnus.com)
* ar.h (ARMAG, ARMAGB, ARFMAG): Change '\n' to '\012', for greater
portability.
Fri Jan 21 00:59:06 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
* sun4.h: Added information about SunOS shared libraries.
Fri Jan 7 08:20:13 1994 Jim Kingdon (kingdon@deneb.cygnus.com)
* aout64.h (N_TXTADDR): Add comment regarding OMAGIC and NMAGIC.
Sat Dec 25 14:55:41 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
* aout64.h (N_DATOFF): Don't pad (revert change of 8 Jul 1993).
Tue Nov 16 15:43:46 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
* aout64.h: New macros ZMAGIC_DISK_BLOCK_SIZE and N_DISK_BLOCK_SIZE
for Linux ZMAGIC.
(N_TXTOFF, N_DATOFF): Use them.
Thu Nov 4 00:33:48 1993 Ken Raeburn (raeburn@kr-pc.cygnus.com)
* aout64.h (RELOC_STD_BITS_RELATIVE_LITTLE): Fixed value to match
sun3 system; used to overlap other fields.
(RELOC_STD_BITS_JMPTABLE_LITTLE): Likewise.
Wed Nov 3 13:48:27 1993 David J. Mackenzie (djm@thepub.cygnus.com)
* aout64.h (RELOC_STD_BITS_BASEREL_LITTLE): Make it 0x10 (Ken's
suggestion) to avoid conflict with RELOC_STD_BITS_EXTERN_LITTLE.
Fri Oct 29 15:09:52 1993 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
* hp300hpux.h (N_SHARED_LIB): Define to be 0.
Mon Sep 13 21:00:56 1993 John Gilmore (gnu@cygnus.com)
* ar.h (ARMAP_TIME_OFFSET): Add and describe.
Mon Aug 23 Sean Fagan (sef@cygnus.com)
* aout64.h [ARCH_SIZE != 64]: Allow N_BADMAG to be overridden.
Mon Aug 16 14:30:14 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
* stab_gnu.h: Include aout/stab.def not just stab.def.
Sun Jul 18 21:41:47 1993 Jim Kingdon (kingdon@rtl.cygnus.com)
* dynix3.h: New, for symmetry running dynix.
Thu Jul 8 12:52:22 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
* aout64.h (N_BADMAG): Recognize QMAGIC.
N_TXTOFF, N_TXTADDR, N_TXTSIZE: Special code for QMAGIC.
N_DATOFF: Pad text size if we need to.
Fri Jun 18 19:19:38 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
* stab.def (N_ECOML): Fix comment.
Mon May 31 09:21:30 1993 Jim Kingdon (kingdon@cygnus.com)
* stab.def: Remove Solaris information on N_FUN stabstring grammar;
I've transferred it to gdb/doc/stabs.texinfo, where it belongs.
Mon May 10 05:48:43 1993 Ken Raeburn (raeburn@kr-pc.cygnus.com)
* hp300hpux.h: Patch from Glenn Engel for linker problem and
compatibility fix:
(OMAGIC, NMAGIC): New definitions.
(SHAREMAGIC): Deleted.
(HPUX_DOT_O_MAGIC): New macro.
(_N_BADMAG): Adjusted.
(N_HEADER_IN_TEXT, N_DATADDR): New macros.
Thu Apr 29 12:07:37 1993 Ken Raeburn (raeburn@deneb.cygnus.com)
* hp300hpux.h: New file from Glenn Engel, glenne@lsid.hp.com.
Tue Apr 27 05:51:04 1993 Ken Raeburn (raeburn@kr-pc.cygnus.com)
* aout64.h (struct external_exec, *MAGIC, N_BADMAG): Don't define
if `external_exec' is already defined as a macro.
(N_DATOFF, N_TRELOFF, N_DRELOFF, N_SYMOFF, N_STROFF): Don't define
if already defined.
(struct external_nlist, EXTERNAL_NLIST_SIZE): Don't define if
`external_nlist' is already defined as a macro.
Sat Aug 15 04:23:02 1992 John Gilmore (gnu@cygnus.com)
* adobe.h: Add description of a.out.adobe format.
Fri Jul 3 00:36:52 1992 John Gilmore (gnu at cygnus.com)
* stab.def: Update more Solaris definitions.
* stab_gnu.h: Add N_SO language types, and Solaris basic float types.
Sun Jun 14 10:53:53 1992 John Gilmore (gnu at cygnus.com)
* stab.def: Update descriptions of Solaris-2 stabs; add N_UNDF.
Thu Jun 11 01:12:07 1992 John Gilmore (gnu at cygnus.com)
* stab.def: Add N_OBJ and N_OPT from Solaris-2.
Thu Jan 30 18:12:44 1992 John Gilmore (gnu at cygnus.com)
* aout/aout64.h: N_TXTSIZE needs some more parentheses.
I don't trust C precedence.
Wed Dec 18 14:32:01 1991 Per Bothner (bothner at cygnus.com)
* aout/aout64.h: Move common sunos-specific test
to recognize shared libraries into new macro N_SHARED_LIB.
Use it to simplify&reformat N_TXTADDR, N_TXTOFF, N_TXTSIZE.
Sat Nov 30 20:34:52 1991 Steve Chamberlain (sac at rtl.cygnus.com)
* ChangeLog, aout64.h, ar.h, encap.h, host.h, hp.h, ranlib.h,
reloc.h, stab.def, stab_gnu.h, sun4.h: All moved from the
devo/include directory
Local Variables:
version-control: never
End:

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/* `a.out.adobe' differences from standard a.out files */
#ifndef __A_OUT_ADOBE_H__
#define __A_OUT_ADOBE_H__
#define BYTES_IN_WORD 4
/* Struct external_exec is the same. */
/* This is the layout on disk of the 32-bit or 64-bit exec header. */
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 */
};
#define EXEC_BYTES_SIZE (4 + BYTES_IN_WORD * 7)
/* Magic numbers for a.out files */
#undef ZMAGIC
#define ZMAGIC 0xAD0BE /* Cute, eh? */
#undef OMAGIC
#undef NMAGIC
#define N_BADMAG(x) ((x).a_info != ZMAGIC)
/* By default, segment size is constant. But some machines override this
to be a function of the a.out header (e.g. machine type). */
#ifndef N_SEGSIZE
#define N_SEGSIZE(x) SEGMENT_SIZE
#endif
#undef N_SEGSIZE /* FIXMEXXXX */
/* Segment information for the a.out.Adobe format is specified after the
file header. It contains N segment descriptors, followed by one with
a type of zero.
The actual text of the segments starts at N_TXTOFF in the file,
regardless of how many or how few segment headers there are. */
struct external_segdesc {
unsigned char e_type[1];
unsigned char e_size[3];
unsigned char e_virtbase[4];
unsigned char e_filebase[4];
};
struct internal_segdesc {
unsigned int a_type:8; /* Segment type N_TEXT, N_DATA, 0 */
unsigned int a_size:24; /* Segment size */
bfd_vma a_virtbase; /* Virtual address */
unsigned int a_filebase; /* Base address in object file */
};
#define N_TXTADDR(x) \
/* This is documented to be at 1024, but appears to really be at 2048.
FIXME?! */
#define N_TXTOFF(x) 2048
#define N_TXTSIZE(x) ((x).a_text)
#define N_DATADDR(x)
#define N_BSSADDR(x)
/* Offsets of the various portions of the file after the text segment. */
#define N_DATOFF(x) ( N_TXTOFF(x) + N_TXTSIZE(x) )
#define N_TRELOFF(x) ( N_DATOFF(x) + (x).a_data )
#define N_DRELOFF(x) ( N_TRELOFF(x) + (x).a_trsize )
#define N_SYMOFF(x) ( N_DRELOFF(x) + (x).a_drsize )
#define N_STROFF(x) ( N_SYMOFF(x) + (x).a_syms )
/* Symbols */
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)
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) */
/* 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_TYPE 0x1e
#define N_STAB 0xe0 /* If any of these bits are on, it's a debug symbol */
#define N_INDR 0x0a
/* The following symbols refer to set elements.
All the N_SET[ATDB] symbols with the same name form one set.
Space is allocated for the set in the text section, and each set
elements value is stored into one word of the space.
The first word of the space is the length of the set (number of elements).
The address of the set is made into an N_SETV symbol
whose name is the same as the name of the set.
This symbol acts like a N_DATA global symbol
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 */
/* This is output from LD. */
#define N_SETV 0x1C /* Pointer to set vector in data area. */
/* Warning symbol. The text gives a warning message, the next symbol
in the table will be undefined. When the symbol is referenced, the
message is printed. */
#define N_WARNING 0x1e
/* Relocations
There are two types of relocation flavours for a.out systems,
standard and extended. The standard form is used on systems where the
instruction has room for all the bits of an offset to the operand, whilst
the extended form is used when an address operand has to be split over n
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.
*/
/* 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 */
};
#define RELOC_STD_BITS_PCREL_BIG 0x80
#define RELOC_STD_BITS_PCREL_LITTLE 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_SH_LITTLE 1
#define RELOC_STD_BITS_EXTERN_BIG 0x10
#define RELOC_STD_BITS_EXTERN_LITTLE 0x08
#define RELOC_STD_BITS_BASEREL_BIG 0x08
#define RELOC_STD_BITS_BASEREL_LITTLE 0x08
#define RELOC_STD_BITS_JMPTABLE_BIG 0x04
#define RELOC_STD_BITS_JMPTABLE_LITTLE 0x04
#define RELOC_STD_BITS_RELATIVE_BIG 0x02
#define RELOC_STD_BITS_RELATIVE_LITTLE 0x02
#define RELOC_STD_SIZE (BYTES_IN_WORD + 3 + 1) /* Bytes per relocation entry */
struct reloc_std_internal
{
bfd_vma r_address; /* Address (within segment) to be relocated. */
/* The meaning of r_symbolnum depends on r_extern. */
unsigned int r_symbolnum:24;
/* Nonzero means value is a pc-relative offset
and it should be relocated for changes in its own address
as well as for changes in the symbol or section specified. */
unsigned int r_pcrel:1;
/* Length (as exponent of 2) of the field to be relocated.
Thus, a value of 2 indicates 1<<2 bytes. */
unsigned int r_length:2;
/* 1 => relocate with value of symbol.
r_symbolnum is the index of the symbol
in files the symbol table.
0 => relocate with the address of a segment.
r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS
(the N_EXT bit may be set also, but signifies nothing). */
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" */
/* unused */
unsigned int r_pad:1; /* Padding -- set to zero */
};
/* 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 */
};
#define RELOC_EXT_BITS_EXTERN_BIG 0x80
#define RELOC_EXT_BITS_EXTERN_LITTLE 0x01
#define RELOC_EXT_BITS_TYPE_BIG 0x1F
#define RELOC_EXT_BITS_TYPE_SH_BIG 0
#define RELOC_EXT_BITS_TYPE_LITTLE 0xF8
#define RELOC_EXT_BITS_TYPE_SH_LITTLE 3
/* Bytes per relocation entry */
#define RELOC_EXT_SIZE (BYTES_IN_WORD + 3 + 1 + BYTES_IN_WORD)
enum reloc_type
{
/* 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 */
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 */
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_22, /* data[0:21] = (addend + sv) */
RELOC_13, /* data[0:12] = (addend + sv) */
RELOC_LO10, /* data[0:9] = (addend + sv) */
RELOC_SFA_BASE,
RELOC_SFA_OFF13,
/* 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. (?) */
RELOC_PC10,
RELOC_PC22,
/* P.I.C. jump table */
RELOC_JMP_TBL,
/* reputedly for shared libraries somehow */
RELOC_SEGOFF16,
RELOC_GLOB_DAT,
RELOC_JMP_SLOT,
RELOC_RELATIVE,
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,
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 */
};
#endif /* __A_OUT_ADOBE_H__ */

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/* `a.out' object-file definitions, including extensions to 64-bit fields */
#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 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 */
};
#define EXEC_BYTES_SIZE (4 + BYTES_IN_WORD * 7)
/* Magic numbers for a.out files */
#if ARCH_SIZE==64
#define OMAGIC 0x1001 /* Code indicating object file */
#define ZMAGIC 0x1002 /* Code indicating demand-paged executable. */
#define NMAGIC 0x1003 /* Code indicating pure executable. */
/* There is no 64-bit QMAGIC as far as I know. */
#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \
&& N_MAGIC(x) != NMAGIC \
&& N_MAGIC(x) != ZMAGIC)
#else
#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.
It is used by 386BSD (and variants) and Linux, at least. */
#ifndef QMAGIC
#define QMAGIC 0314
#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
#ifdef QMAGIC
#define N_IS_QMAGIC(x) (N_MAGIC (x) == QMAGIC)
#else
#define N_IS_QMAGIC(x) (0)
#endif
/* 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 (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). */
#ifndef N_SEGSIZE
#define N_SEGSIZE(x) SEGMENT_SIZE
#endif
/* Virtual memory address of the text section.
This is getting very complicated. A good reason to discard a.out format
for something that specifies these fields explicitly. But til then...
* OMAGIC and NMAGIC files:
(object files: text for "relocatable addr 0" right after the header)
start at 0, offset is EXEC_BYTES_SIZE, size as stated.
* The text address, offset, and size of ZMAGIC files depend
on the entry point of the file:
* entry point below TEXT_START_ADDR:
(hack for SunOS shared libraries)
start at 0, offset is 0, size as stated.
* If N_HEADER_IN_TEXT(x) is true (which defaults to being the
case when the entry point is EXEC_BYTES_SIZE or further into a page):
no padding is needed; text can start after exec header. Sun
considers the text segment of such files to include the exec header;
for BFD's purposes, we don't, which makes more work for us.
start at TEXT_START_ADDR + EXEC_BYTES_SIZE, offset is EXEC_BYTES_SIZE,
size as stated minus EXEC_BYTES_SIZE.
* 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 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.
In that case, you would #define N_HEADER_IN_TEXT(x) as 1 for sunos,
and as 0 for most other hosts (Sony News, Vax Ultrix, etc).
(Do this in the appropriate bfd target file.)
(The default is a heuristic that will break if people try changing
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 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 & (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)
#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) ? TARGET_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 */\
)
#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 */\
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
for ZMAGIC files that nominally include the exec header
as part of the first page of text. (BFD doesn't consider the
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 */\
)
#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. */
#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))))
#endif
/* The address of the BSS segment -- immediately after the data segment. */
#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
/* Offsets of the various portions of the file after the text segment. */
/* 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_TXTOFF(x) + N_TXTSIZE(x))
#endif
#ifndef N_TRELOFF
#define N_TRELOFF(x) ( N_DATOFF(x) + (x).a_data )
#endif
#ifndef N_DRELOFF
#define N_DRELOFF(x) ( N_TRELOFF(x) + (x).a_trsize )
#endif
#ifndef N_SYMOFF
#define N_SYMOFF(x) ( N_DRELOFF(x) + (x).a_drsize )
#endif
#ifndef N_STROFF
#define N_STROFF(x) ( N_SYMOFF(x) + (x).a_syms )
#endif
/* 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 */
};
#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 */
};
/* 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) */
/* 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_TYPE 0x1e
#define N_STAB 0xe0 /* If any of these bits are on, it's a debug symbol */
#define N_INDR 0x0a
/* The following symbols refer to set elements.
All the N_SET[ATDB] symbols with the same name form one set.
Space is allocated for the set in the text section, and each set
elements value is stored into one word of the space.
The first word of the space is the length of the set (number of elements).
The address of the set is made into an N_SETV symbol
whose name is the same as the name of the set.
This symbol acts like a N_DATA global symbol
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 */
/* This is output from LD. */
#define N_SETV 0x1C /* Pointer to set vector in data area. */
/* Warning symbol. The text gives a warning message, the next symbol
in the table will be undefined. When the symbol is referenced, the
message is printed. */
#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,
standard and extended. The standard form is used on systems where the
instruction has room for all the bits of an offset to the operand, whilst
the extended form is used when an address operand has to be split over n
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.
*/
/* 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 */
};
#define RELOC_STD_BITS_PCREL_BIG ((unsigned int) 0x80)
#define RELOC_STD_BITS_PCREL_LITTLE ((unsigned int) 0x01)
#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 ((unsigned int) 0x10)
#define RELOC_STD_BITS_EXTERN_LITTLE ((unsigned int) 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 ((unsigned int) 0x04)
#define RELOC_STD_BITS_JMPTABLE_LITTLE ((unsigned int) 0x20)
#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 */
struct reloc_std_internal
{
bfd_vma r_address; /* Address (within segment) to be relocated. */
/* The meaning of r_symbolnum depends on r_extern. */
unsigned int r_symbolnum:24;
/* Nonzero means value is a pc-relative offset
and it should be relocated for changes in its own address
as well as for changes in the symbol or section specified. */
unsigned int r_pcrel:1;
/* Length (as exponent of 2) of the field to be relocated.
Thus, a value of 2 indicates 1<<2 bytes. */
unsigned int r_length:2;
/* 1 => relocate with value of symbol.
r_symbolnum is the index of the symbol
in files the symbol table.
0 => relocate with the address of a segment.
r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS
(the N_EXT bit may be set also, but signifies nothing). */
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" */
/* unused */
unsigned int r_pad:1; /* Padding -- set to zero */
};
/* 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 */
};
#define RELOC_EXT_BITS_EXTERN_BIG ((unsigned int) 0x80)
#define RELOC_EXT_BITS_EXTERN_LITTLE ((unsigned int) 0x01)
#define RELOC_EXT_BITS_TYPE_BIG ((unsigned int) 0x1F)
#define RELOC_EXT_BITS_TYPE_SH_BIG 0
#define RELOC_EXT_BITS_TYPE_LITTLE ((unsigned int) 0xF8)
#define RELOC_EXT_BITS_TYPE_SH_LITTLE 3
/* Bytes per relocation entry */
#define RELOC_EXT_SIZE (BYTES_IN_WORD + 3 + 1 + BYTES_IN_WORD)
enum reloc_type
{
/* 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 */
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 */
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_22, /* data[0:21] = (addend + sv) */
RELOC_13, /* data[0:12] = (addend + sv) */
RELOC_LO10, /* data[0:9] = (addend + sv) */
RELOC_SFA_BASE,
RELOC_SFA_OFF13,
/* 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. (?) */
RELOC_PC10,
RELOC_PC22,
/* P.I.C. jump table */
RELOC_JMP_TBL,
/* reputedly for shared libraries somehow */
RELOC_SEGOFF16,
RELOC_GLOB_DAT,
RELOC_JMP_SLOT,
RELOC_RELATIVE,
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, for sparc v9 */
RELOC_64, /* data[0:63] = addend + sv */
RELOC_DISP64, /* data[0:63] = addend - pc + sv */
RELOC_WDISP21, /* data[0:20] = (addend + sv - pc)>>2 */
RELOC_DISP21, /* data[0:20] = addend - pc + sv */
RELOC_DISP14, /* data[0:13] = addend - pc + sv */
/* 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 */
};
/* Q.
Should the length of the string table be 4 bytes or 8 bytes ?
Q.
What about archive indexes ?
*/
#endif /* __A_OUT_64_H__ */

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/* archive file definition for GNU software */
/* So far this is correct for BSDish archives. Don't forget that
files must begin on an even byte boundary. */
#ifndef __GNU_AR_H__
#define __GNU_AR_H__
/* Note that the usual '\n' in magic strings may translate to different
characters, as allowed by ANSI. '\012' has a fixed value, and remains
compatible with existing BSDish archives. */
#define ARMAG "!<arch>\012" /* For COFF and a.out archives */
#define ARMAGB "!<bout>\012" /* For b.out archives */
#define SARMAG 8
#define ARFMAG "`\012"
/* The ar_date field of the armap (__.SYMDEF) member of an archive
must be greater than the modified date of the entire file, or
BSD-derived linkers complain. We originally write the ar_date with
this offset from the real file's mod-time. After finishing the
file, we rewrite ar_date if it's not still greater than the mod date. */
#define ARMAP_TIME_OFFSET 60
struct ar_hdr {
char ar_name[16]; /* name of this member */
char ar_date[12]; /* file mtime */
char ar_uid[6]; /* owner uid; printed as decimal */
char ar_gid[6]; /* owner gid; printed as decimal */
char ar_mode[8]; /* file mode, printed as octal */
char ar_size[10]; /* file size, printed as decimal */
char ar_fmag[2]; /* should contain ARFMAG */
};
#endif /* __GNU_AR_H__ */

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/*
* a.out specifics for Sequent Symmetry running Dynix 3.x
*/
#ifndef A_OUT_DYNIX3_H
#define A_OUT_DYNIX3_H
#define external_exec dynix_external_exec
/* struct exec for Dynix 3
*
* a_gdtbl and a_bootstrap are only for standalone binaries.
* Shared data fields are not supported by the kernel as of Dynix 3.1,
* but are supported by Dynix compiler programs.
*/
struct dynix_external_exec {
unsigned char e_info[4];
unsigned char e_text[4];
unsigned char e_data[4];
unsigned char e_bss[4];
unsigned char e_syms[4];
unsigned char e_entry[4];
unsigned char e_trsize[4];
unsigned char e_drsize[4];
unsigned char e_g_code[8], e_g_data[8], e_g_desc[8];
unsigned char e_shdata[4];
unsigned char e_shbss[4];
unsigned char e_shdrsize[4];
unsigned char e_bootstrap[44];
unsigned char e_reserved[12];
unsigned char e_version[4];
};
#define EXEC_BYTES_SIZE (128)
/*
* All executables under Dynix are demand paged with read-only text,
* Thus no NMAGIC.
*
* ZMAGIC has a page of 0s at virtual 0,
* XMAGIC has an invalid page at virtual 0
*/
#define OMAGIC 0x12eb /* .o */
#define ZMAGIC 0x22eb /* zero @ 0, demand load */
#define XMAGIC 0x32eb /* invalid @ 0, demand load */
#define SMAGIC 0x42eb /* standalone, not supported here */
#define N_BADMAG(x) ((OMAGIC != N_MAGIC(x)) && \
(ZMAGIC != N_MAGIC(x)) && \
(XMAGIC != N_MAGIC(x)) && \
(SMAGIC != N_MAGIC(x)))
#define N_ADDRADJ(x) ((ZMAGIC == N_MAGIC(x) || XMAGIC == N_MAGIC(x)) ? 0x1000 : 0)
#define N_TXTOFF(x) (EXEC_BYTES_SIZE)
#define N_DATOFF(x) (N_TXTOFF(x) + N_TXTSIZE(x))
#define N_SHDATOFF(x) (N_DATOFF(x) + (x).a_data)
#define N_TRELOFF(x) (N_SHDATOFF(x) + (x).a_shdata)
#define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize)
#define N_SHDRELOFF(x) (N_DRELOFF(x) + (x).a_drsize)
#define N_SYMOFF(x) (N_SHDRELOFF(x) + (x).a_shdrsize)
#define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms)
#define N_TXTADDR(x) \
(((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? 0 \
: TEXT_START_ADDR + EXEC_BYTES_SIZE)
#define N_TXTSIZE(x) \
(((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? ((x).a_text) \
: ((x).a_text - N_ADDRADJ(x) - EXEC_BYTES_SIZE))
#endif /* A_OUT_DYNIX3_H */

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/* Yet Another Try at encapsulating bsd object files in coff.
Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc.
Written by Pace Willisson 12/9/88
This file is obsolete. It needs to be converted to just define a bunch
of stuff that BFD can use to do coff-encapsulated files. --gnu@cygnus.com
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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*
* We only use the coff headers to tell the kernel
* how to exec the file. Therefore, the only fields that need to
* be filled in are the scnptr and vaddr for the text and data
* sections, and the vaddr for the bss. As far as coff is concerned,
* there is no symbol table, relocation, or line numbers.
*
* A normal bsd header (struct exec) is placed after the coff headers,
* and before the real text. I defined a the new fields 'a_machtype'
* and a_flags. If a_machtype is M_386, and a_flags & A_ENCAP is
* true, then the bsd header is preceeded by a coff header. Macros
* like N_TXTOFF and N_TXTADDR use this field to find the bsd header.
*
* The only problem is to track down the bsd exec header. The
* macros HEADER_OFFSET, etc do this.
*/
#define N_FLAGS_COFF_ENCAPSULATE 0x20 /* coff header precedes bsd header */
/* Describe the COFF header used for encapsulation. */
struct coffheader
{
/* filehdr */
unsigned short f_magic;
unsigned short f_nscns;
long f_timdat;
long f_symptr;
long f_nsyms;
unsigned short f_opthdr;
unsigned short f_flags;
/* aouthdr */
short magic;
short vstamp;
long tsize;
long dsize;
long bsize;
long entry;
long text_start;
long data_start;
struct coffscn
{
char s_name[8];
long s_paddr;
long s_vaddr;
long s_size;
long s_scnptr;
long s_relptr;
long s_lnnoptr;
unsigned short s_nreloc;
unsigned short s_nlnno;
long s_flags;
} scns[3];
};
/* Describe some of the parameters of the encapsulation,
including how to find the encapsulated BSD header. */
/* FIXME, this is dumb. The same tools can't handle a.outs for different
architectures, just because COFF_MAGIC is different; so you need a
separate GNU nm for every architecture!!? Unfortunately, it needs to
be this way, since the COFF_MAGIC value is determined by the kernel
we're trying to fool here. */
#define COFF_MAGIC_I386 0514 /* I386MAGIC */
#define COFF_MAGIC_M68K 0520 /* MC68MAGIC */
#define COFF_MAGIC_A29K 0x17A /* Used by asm29k cross-tools */
#ifdef COFF_MAGIC
short __header_offset_temp;
#define HEADER_OFFSET(f) \
(__header_offset_temp = 0, \
fread ((char *)&__header_offset_temp, sizeof (short), 1, (f)), \
fseek ((f), -sizeof (short), 1), \
__header_offset_temp==COFF_MAGIC ? sizeof(struct coffheader) : 0)
#else
#define HEADER_OFFSET(f) 0
#endif
#define HEADER_SEEK(f) (fseek ((f), HEADER_OFFSET((f)), 1))
/* Describe the characteristics of the BSD header
that appears inside the encapsulation. */
/* Encapsulated coff files that are linked ZMAGIC have a text segment
offset just past the header (and a matching TXTADDR), excluding
the headers from the text segment proper but keeping the physical
layout and the virtual memory layout page-aligned.
Non-encapsulated a.out files that are linked ZMAGIC have a text
segment that starts at 0 and an N_TXTADR similarly offset to 0.
They too are page-aligned with each other, but they include the
a.out header as part of the text.
The _N_HDROFF gets sizeof struct exec added to it, so we have
to compensate here. See <a.out.gnu.h>. */
#undef _N_HDROFF
#undef N_TXTADDR
#undef N_DATADDR
#define _N_HDROFF(x) ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \
sizeof (struct coffheader) : 0)
/* Address of text segment in memory after it is loaded. */
#define N_TXTADDR(x) \
((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \
sizeof (struct coffheader) + sizeof (struct exec) : 0)
#define SEGMENT_SIZE 0x400000
#define N_DATADDR(x) \
((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \
(SEGMENT_SIZE + ((N_TXTADDR(x)+(x).a_text-1) & ~(SEGMENT_SIZE-1))) : \
(N_TXTADDR(x)+(x).a_text))

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/* Parameters about the a.out format, based on the host system on which
the program is compiled. */
/* Address of data segment in memory after it is loaded.
It is up to you to define SEGMENT_SIZE
on machines not listed here. */
#ifndef SEGMENT_SIZE
#if defined(hp300) || defined(pyr)
#define SEGMENT_SIZE page_size
#endif
#ifdef sony
#define SEGMENT_SIZE 0x1000
#endif /* Sony. */
#ifdef is68k
#define SEGMENT_SIZE 0x20000
#endif
#if defined(m68k) && defined(PORTAR)
#define TARGET_PAGE_SIZE 0x400
#define SEGMENT_SIZE TARGET_PAGE_SIZE
#endif
#endif /*!defined(SEGMENT_SIZE)*/

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/* Special version of <a.out.h> for use under hp-ux.
Copyright 1988, 1991 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* THIS FILE IS OBSOLETE. It needs to be revised as a variant "external"
a.out format for use with BFD. */
/* The `exec' structure and overall layout must be close to HP's when
we are running on an HP system, otherwise we will not be able to
execute the resulting file. */
/* Allow this file to be included twice. */
#ifndef __GNU_EXEC_MACROS__
struct exec
{
unsigned short a_machtype; /* machine type */
unsigned short a_magic; /* magic number */
unsigned long a_spare1;
unsigned long a_spare2;
unsigned long a_text; /* length of text, in bytes */
unsigned long a_data; /* length of data, in bytes */
unsigned long a_bss; /* length of uninitialized data area for file, in bytes */
unsigned long a_trsize; /* length of relocation info for text, in bytes */
unsigned long a_drsize; /* length of relocation info for data, in bytes */
unsigned long a_spare3; /* HP = pascal interface size */
unsigned long a_spare4; /* HP = symbol table size */
unsigned long a_spare5; /* HP = debug name table size */
unsigned long a_entry; /* start address */
unsigned long a_spare6; /* HP = source line table size */
unsigned long a_spare7; /* HP = value table size */
unsigned long a_syms; /* length of symbol table data in file, in bytes */
unsigned long a_spare8;
};
/* Tell a.out.gnu.h not to define `struct exec'. */
#define __STRUCT_EXEC_OVERRIDE__
#include "../a.out.gnu.h"
#undef N_MAGIC
#undef N_MACHTYPE
#undef N_FLAGS
#undef N_SET_INFO
#undef N_SET_MAGIC
#undef N_SET_MACHTYPE
#undef N_SET_FLAGS
#define N_MAGIC(exec) ((exec) . a_magic)
#define N_MACHTYPE(exec) ((exec) . a_machtype)
#define N_SET_MAGIC(exec, magic) (((exec) . a_magic) = (magic))
#define N_SET_MACHTYPE(exec, machtype) (((exec) . a_machtype) = (machtype))
#undef N_BADMAG
#define N_BADMAG(x) ((_N_BADMAG (x)) || (_N_BADMACH (x)))
#define _N_BADMACH(x) \
(((N_MACHTYPE (x)) != HP9000S200_ID) && \
((N_MACHTYPE (x)) != HP98x6_ID))
#define HP98x6_ID 0x20A
#define HP9000S200_ID 0x20C
#undef _N_HDROFF
#define _N_HDROFF(x) (SEGMENT_SIZE - (sizeof (struct exec)))
#define SEGMENT_SIZE 0x1000
#endif /* __GNU_EXEC_MACROS__ */

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/* Special version of <a.out.h> for use under hp-ux.
Copyright (C) 1988,1993 Free Software Foundation, Inc. */
struct hp300hpux_exec_bytes
{
unsigned char e_info[4]; /* a_machtype/a_magic */
unsigned char e_spare1[4];
unsigned char e_spare2[4];
unsigned char e_text[4]; /* length of text, in bytes */
unsigned char e_data[4]; /* length of data, in bytes */
unsigned char e_bss[4]; /* length of uninitialized data area , in bytes */
unsigned char e_trsize[4]; /* length of relocation info for text, in bytes*/
unsigned char e_drsize[4]; /* length of relocation info for data, in bytes*/
unsigned char e_passize[4];/* HP = pascal interface size */
unsigned char e_syms[4]; /* HP = symbol table size */
unsigned char e_spare5[4]; /* HP = debug name table size */
unsigned char e_entry[4]; /* start address */
unsigned char e_spare6[4]; /* HP = source line table size */
unsigned char e_supsize[4];/* HP = value table size */
unsigned char e_drelocs[4];
unsigned char e_extension[4]; /* file offset of extension */
};
#define EXEC_BYTES_SIZE 64
struct hp300hpux_nlist_bytes
{
unsigned char e_value[4];
unsigned char e_type[1];
unsigned char e_length[1]; /* length of ascii symbol name */
unsigned char e_almod[2]; /* alignment mod */
unsigned char e_shlib[2]; /* info about dynamic linking */
};
#define EXTERNAL_NLIST_SIZE 10
struct hp300hpux_reloc
{
unsigned char r_address[4];/* offset of of data to relocate */
unsigned char r_index[2]; /* symbol table index of symbol */
unsigned char r_type[1]; /* relocation type */
unsigned char r_length[1]; /* length of item to reloc */
};
struct hp300hpux_header_extension
{
unsigned char e_syms[4];
unsigned char unique_headers[12*4];
unsigned char e_header[2]; /* type of header */
unsigned char e_version[2]; /* version */
unsigned char e_size[4]; /* bytes following*/
unsigned char e_extension[4];/* file offset of next extension */
};
#define EXTERNAL_EXTENSION_HEADER_SIZE (16*4)
/* hpux separates object files (0x106) and impure executables (0x107) */
/* but the bfd code does not distinguish between them. Since we want to*/
/* read hpux .o files, we add an special define and use it below in */
/* offset and address calculations. */
#define HPUX_DOT_O_MAGIC 0x106
#define OMAGIC 0x107 /* object file or impure executable. */
#define NMAGIC 0x108 /* Code indicating pure executable. */
#define ZMAGIC 0x10B /* demand-paged executable. */
#define N_HEADER_IN_TEXT(x) 0
#if 0 /* libaout.h only uses the lower 8 bits */
#define HP98x6_ID 0x20A
#define HP9000S200_ID 0x20C
#endif
#define HP98x6_ID 0x0A
#define HP9000S200_ID 0x0C
#define N_BADMAG(x) ((_N_BADMAG (x)) || (_N_BADMACH (x)))
#define N_DATADDR(x) \
((N_MAGIC(x)==OMAGIC || N_MAGIC(x)==HPUX_DOT_O_MAGIC) ? \
(N_TXTADDR(x)+N_TXTSIZE(x)) \
: (N_SEGSIZE(x) + ((N_TXTADDR(x)+N_TXTSIZE(x)-1) & ~(N_SEGSIZE(x)-1))))
#define _N_BADMACH(x) \
(((N_MACHTYPE (x)) != HP9000S200_ID) && \
((N_MACHTYPE (x)) != HP98x6_ID))
#define _N_BADMAG(x) (N_MAGIC(x) != HPUX_DOT_O_MAGIC \
&& N_MAGIC(x) != OMAGIC \
&& N_MAGIC(x) != NMAGIC \
&& N_MAGIC(x) != ZMAGIC )
#undef _N_HDROFF
#define _N_HDROFF(x) (SEGMENT_SIZE - (sizeof (struct exec)))
#undef N_DATOFF
#undef N_PASOFF
#undef N_SYMOFF
#undef N_SUPOFF
#undef N_TRELOFF
#undef N_DRELOFF
#undef N_STROFF
#define N_DATOFF(x) ( N_TXTOFF(x) + N_TXTSIZE(x) )
#define N_PASOFF(x) ( N_DATOFF(x) + (x).a_data)
#define N_SYMOFF(x) ( N_PASOFF(x) /* + (x).a_passize*/ )
#define N_SUPOFF(x) ( N_SYMOFF(x) + (x).a_syms )
#define N_TRELOFF(x) ( N_SUPOFF(x) /* + 0 (x).a_supsize*/ )
#define N_DRELOFF(x) ( N_TRELOFF(x) + (x).a_trsize )
#define N_EXTHOFF(x) ( N_DRELOFF(x) /* + 0 (x).a_drsize */)
#define N_STROFF(x) ( 0 /* no string table */ )
/* use these when the file has gnu symbol tables */
#define N_GNU_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
#define N_GNU_DRELOFF(x) (N_GNU_TRELOFF(x) + (x).a_trsize)
#define N_GNU_SYMOFF(x) (N_GNU_DRELOFF(x) + (x).a_drsize)
#define TARGET_PAGE_SIZE 0x1000
#define SEGMENT_SIZE 0x1000
#define TEXT_START_ADDR 0
#undef N_SHARED_LIB
#define N_SHARED_LIB(x) ( 0 /* no shared libraries */ )

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#include "filehdr.h"
#include "aouthdr.h"
#include "scnhdr.h"
#include "spacehdr.h"
#include "syms.h"

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/* ranlib.h -- archive library index member definition for GNU.
Copyright 1990-1991 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* The Symdef member of an archive contains two things:
a table that maps symbol-string offsets to file offsets,
and a symbol-string table. All the symbol names are
run together (each with trailing null) in the symbol-string
table. There is a single longword bytecount on the front
of each of these tables. Thus if we have two symbols,
"foo" and "_bar", that are in archive members at offsets
200 and 900, it would look like this:
16 ; byte count of index table
0 ; offset of "foo" in string table
200 ; offset of foo-module in file
4 ; offset of "bar" in string table
900 ; offset of bar-module in file
9 ; byte count of string table
"foo\0_bar\0" ; string table */
#define RANLIBMAG "__.SYMDEF" /* Archive file name containing index */
#define RANLIBSKEW 3 /* Creation time offset */
/* Format of __.SYMDEF:
First, a longword containing the size of the 'symdef' data that follows.
Second, zero or more 'symdef' structures.
Third, a longword containing the length of symbol name strings.
Fourth, zero or more symbol name strings (each followed by a null). */
struct symdef
{
union
{
unsigned long string_offset; /* In the file */
char *name; /* In memory, sometimes */
} s;
/* this points to the front of the file header (AKA member header --
a struct ar_hdr), not to the front of the file or into the file).
in other words it only tells you which file to read */
unsigned long file_offset;
};
/* Compatability with BSD code */
#define ranlib symdef
#define ran_un s
#define ran_strx string_offset
#define ran_name name
#define ran_off file_offset

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/* reloc.h -- Header file for relocation information.
Copyright 1989-1991 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Relocation types for a.out files using reloc_info_extended
(SPARC and AMD 29000). */
#ifndef _RELOC_H_READ_
#define _RELOC_H_READ_ 1
enum reloc_type
{
RELOC_8, RELOC_16, RELOC_32, /* simple relocations */
RELOC_DISP8, RELOC_DISP16, RELOC_DISP32, /* pc-rel displacement */
RELOC_WDISP30, RELOC_WDISP22,
RELOC_HI22, RELOC_22,
RELOC_13, RELOC_LO10,
RELOC_SFA_BASE, RELOC_SFA_OFF13,
RELOC_BASE10, RELOC_BASE13, RELOC_BASE22, /* P.I.C. (base-relative) */
RELOC_PC10, RELOC_PC22, /* for some sort of pc-rel P.I.C. (?) */
RELOC_JMP_TBL, /* P.I.C. jump table */
RELOC_SEGOFF16, /* reputedly for shared libraries somehow */
RELOC_GLOB_DAT, RELOC_JMP_SLOT, RELOC_RELATIVE,
RELOC_11,
RELOC_WDISP2_14,
RELOC_WDISP19,
RELOC_HHI22,
RELOC_HLO10,
/* 29K relocation types */
RELOC_JUMPTARG, RELOC_CONST, RELOC_CONSTH,
RELOC_WDISP14, RELOC_WDISP21,
NO_RELOC
};
#define RELOC_TYPE_NAMES \
"8", "16", "32", "DISP8", \
"DISP16", "DISP32", "WDISP30", "WDISP22", \
"HI22", "22", "13", "LO10", \
"SFA_BASE", "SFAOFF13", "BASE10", "BASE13", \
"BASE22", "PC10", "PC22", "JMP_TBL", \
"SEGOFF16", "GLOB_DAT", "JMP_SLOT", "RELATIVE", \
"11", "WDISP2_14", "WDISP19", "HHI22", \
"HLO10", \
"JUMPTARG", "CONST", "CONSTH", "WDISP14", \
"WDISP21", \
"NO_RELOC"
#endif /* _RELOC_H_READ_ */
/* end of reloc.h */

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/* Table of DBX symbol codes for the GNU system.
Copyright (C) 1988, 91, 92, 93, 94, 95, 96, 1998
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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* New stab from Solaris 2. This uses an n_type of 0, which in a.out files
overlaps the N_UNDF used for ordinary symbols. In ELF files, the
debug information is in a different file section, so there is no conflict.
This symbol's n_value gives the size of the string section associated
with this file. The symbol's n_strx (relative to the just-updated
string section start address) gives the name of the source file,
e.g. "foo.c", without any path information. The symbol's n_desc gives
the count of upcoming symbols associated with this file (not including
this one). */
/* __define_stab (N_UNDF, 0x00, "UNDF") */
/* Global variable. Only the name is significant.
To find the address, look in the corresponding external symbol. */
__define_stab (N_GSYM, 0x20, "GSYM")
/* Function name for BSD Fortran. Only the name is significant.
To find the address, look in the corresponding external symbol. */
__define_stab (N_FNAME, 0x22, "FNAME")
/* Function name or text-segment variable for C. Value is its address.
Desc is supposedly starting line number, but GCC doesn't set it
and DBX seems not to miss it. */
__define_stab (N_FUN, 0x24, "FUN")
/* Data-segment variable with internal linkage. Value is its address.
"Static Sym". */
__define_stab (N_STSYM, 0x26, "STSYM")
/* BSS-segment variable with internal linkage. Value is its address. */
__define_stab (N_LCSYM, 0x28, "LCSYM")
/* Name of main routine. Only the name is significant. */
__define_stab (N_MAIN, 0x2a, "MAIN")
/* Solaris2: Read-only data symbols. */
__define_stab (N_ROSYM, 0x2c, "ROSYM")
/* Global symbol in Pascal.
Supposedly the value is its line number; I'm skeptical. */
__define_stab (N_PC, 0x30, "PC")
/* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */
__define_stab (N_NSYMS, 0x32, "NSYMS")
/* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */
__define_stab (N_NOMAP, 0x34, "NOMAP")
/* New stab from Solaris 2. Like N_SO, but for the object file. Two in
a row provide the build directory and the relative path of the .o from it.
Solaris2 uses this to avoid putting the stabs info into the linked
executable; this stab goes into the ".stab.index" section, and the debugger
reads the real stabs directly from the .o files instead. */
__define_stab (N_OBJ, 0x38, "OBJ")
/* New stab from Solaris 2. Options for the debugger, related to the
source language for this module. E.g. whether to use ANSI
integral promotions or traditional integral promotions. */
__define_stab (N_OPT, 0x3c, "OPT")
/* Register variable. Value is number of register. */
__define_stab (N_RSYM, 0x40, "RSYM")
/* Modula-2 compilation unit. Can someone say what info it contains? */
__define_stab (N_M2C, 0x42, "M2C")
/* Line number in text segment. Desc is the line number;
value is corresponding address. On Solaris2, the line number is
relative to the start of the current function. */
__define_stab (N_SLINE, 0x44, "SLINE")
/* Similar, for data segment. */
__define_stab (N_DSLINE, 0x46, "DSLINE")
/* Similar, for bss segment. */
__define_stab (N_BSLINE, 0x48, "BSLINE")
/* Sun's source-code browser stabs. ?? Don't know what the fields are.
Supposedly the field is "path to associated .cb file". THIS VALUE
OVERLAPS WITH N_BSLINE! */
__define_stab_duplicate (N_BROWS, 0x48, "BROWS")
/* GNU Modula-2 definition module dependency. Value is the modification time
of the definition file. Other is non-zero if it is imported with the
GNU M2 keyword %INITIALIZE. Perhaps N_M2C can be used if there
are enough empty fields? */
__define_stab(N_DEFD, 0x4a, "DEFD")
/* New in Solaris2. Function start/body/end line numbers. */
__define_stab(N_FLINE, 0x4C, "FLINE")
/* THE FOLLOWING TWO STAB VALUES CONFLICT. Happily, one is for Modula-2
and one is for C++. Still,... */
/* GNU C++ exception variable. Name is variable name. */
__define_stab (N_EHDECL, 0x50, "EHDECL")
/* Modula2 info "for imc": name,,0,0,0 according to Ultrix V4.0. */
__define_stab_duplicate (N_MOD2, 0x50, "MOD2")
/* GNU C++ `catch' clause. Value is its address. Desc is nonzero if
this entry is immediately followed by a CAUGHT stab saying what exception
was caught. Multiple CAUGHT stabs means that multiple exceptions
can be caught here. If Desc is 0, it means all exceptions are caught
here. */
__define_stab (N_CATCH, 0x54, "CATCH")
/* Structure or union element. Value is offset in the structure. */
__define_stab (N_SSYM, 0x60, "SSYM")
/* Solaris2: Last stab emitted for module. */
__define_stab (N_ENDM, 0x62, "ENDM")
/* Name of main source file.
Value is starting text address of the compilation.
If multiple N_SO's appear, the first to contain a trailing / is the
compilation directory. The first to not contain a trailing / is the
source file name, relative to the compilation directory. Others (perhaps
resulting from cfront) are ignored.
On Solaris2, value is undefined, but desc is a source-language code. */
__define_stab (N_SO, 0x64, "SO")
/* SunPro F77: Name of alias. */
__define_stab (N_ALIAS, 0x6c, "ALIAS")
/* Automatic variable in the stack. Value is offset from frame pointer.
Also used for type descriptions. */
__define_stab (N_LSYM, 0x80, "LSYM")
/* Beginning of an include file. Only Sun uses this.
In an object file, only the name is significant.
The Sun linker puts data into some of the other fields. */
__define_stab (N_BINCL, 0x82, "BINCL")
/* Name of sub-source file (#include file).
Value is starting text address of the compilation. */
__define_stab (N_SOL, 0x84, "SOL")
/* Parameter variable. Value is offset from argument pointer.
(On most machines the argument pointer is the same as the frame pointer. */
__define_stab (N_PSYM, 0xa0, "PSYM")
/* End of an include file. No name.
This and N_BINCL act as brackets around the file's output.
In an object file, there is no significant data in this entry.
The Sun linker puts data into some of the fields. */
__define_stab (N_EINCL, 0xa2, "EINCL")
/* Alternate entry point. Value is its address. */
__define_stab (N_ENTRY, 0xa4, "ENTRY")
/* Beginning of lexical block.
The desc is the nesting level in lexical blocks.
The value is the address of the start of the text for the block.
The variables declared inside the block *precede* the N_LBRAC symbol.
On Solaris2, the value is relative to the start of the current function. */
__define_stab (N_LBRAC, 0xc0, "LBRAC")
/* Place holder for deleted include file. Replaces a N_BINCL and everything
up to the corresponding N_EINCL. The Sun linker generates these when
it finds multiple identical copies of the symbols from an include file.
This appears only in output from the Sun linker. */
__define_stab (N_EXCL, 0xc2, "EXCL")
/* Modula-2 scope information. Can someone say what info it contains? */
__define_stab (N_SCOPE, 0xc4, "SCOPE")
/* End of a lexical block. Desc matches the N_LBRAC's desc.
The value is the address of the end of the text for the block.
On Solaris2, the value is relative to the start of the current function. */
__define_stab (N_RBRAC, 0xe0, "RBRAC")
/* Begin named common block. Only the name is significant. */
__define_stab (N_BCOMM, 0xe2, "BCOMM")
/* End named common block. Only the name is significant
(and it should match the N_BCOMM). */
__define_stab (N_ECOMM, 0xe4, "ECOMM")
/* Member of a common block; value is offset within the common block.
This should occur within a BCOMM/ECOMM pair. */
__define_stab (N_ECOML, 0xe8, "ECOML")
/* Solaris2: Pascal "with" statement: type,,0,0,offset */
__define_stab (N_WITH, 0xea, "WITH")
/* These STAB's are used on Gould systems for Non-Base register symbols
or something like that. FIXME. I have assigned the values at random
since I don't have a Gould here. Fixups from Gould folk welcome... */
__define_stab (N_NBTEXT, 0xF0, "NBTEXT")
__define_stab (N_NBDATA, 0xF2, "NBDATA")
__define_stab (N_NBBSS, 0xF4, "NBBSS")
__define_stab (N_NBSTS, 0xF6, "NBSTS")
__define_stab (N_NBLCS, 0xF8, "NBLCS")
/* Second symbol entry containing a length-value for the preceding entry.
The value is the length. */
__define_stab (N_LENG, 0xfe, "LENG")
/* The above information, in matrix format.
STAB MATRIX
_________________________________________________
| 00 - 1F are not dbx stab symbols |
| In most cases, the low bit is the EXTernal bit|
| 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA |
| 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT |
| 08 BSS | 0A INDR | 0C FN_SEQ | 0E WEAKA |
| 09 |EXT | 0B | 0D WEAKU | 0F WEAKT |
| 10 WEAKD | 12 COMM | 14 SETA | 16 SETT |
| 11 WEAKB | 13 | 15 | 17 |
| 18 SETD | 1A SETB | 1C SETV | 1E WARNING|
| 19 | 1B | 1D | 1F FN |
|_______________________________________________|
| Debug entries with bit 01 set are unused. |
| 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM |
| 28 LCSYM | 2A MAIN | 2C ROSYM | 2E |
| 30 PC | 32 NSYMS | 34 NOMAP | 36 |
| 38 OBJ | 3A | 3C OPT | 3E |
| 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE |
| 48 BSLINE*| 4A DEFD | 4C FLINE | 4E |
| 50 EHDECL*| 52 | 54 CATCH | 56 |
| 58 | 5A | 5C | 5E |
| 60 SSYM | 62 ENDM | 64 SO | 66 |
| 68 | 6A | 6C ALIAS | 6E |
| 70 | 72 | 74 | 76 |
| 78 | 7A | 7C | 7E |
| 80 LSYM | 82 BINCL | 84 SOL | 86 |
| 88 | 8A | 8C | 8E |
| 90 | 92 | 94 | 96 |
| 98 | 9A | 9C | 9E |
| A0 PSYM | A2 EINCL | A4 ENTRY | A6 |
| A8 | AA | AC | AE |
| B0 | B2 | B4 | B6 |
| B8 | BA | BC | BE |
| C0 LBRAC | C2 EXCL | C4 SCOPE | C6 |
| C8 | CA | CC | CE |
| D0 | D2 | D4 | D6 |
| D8 | DA | DC | DE |
| E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 |
| E8 ECOML | EA WITH | EC | EE |
| F0 | F2 | F4 | F6 |
| F8 | FA | FC | FE LENG |
+-----------------------------------------------+
* 50 EHDECL is also MOD2.
* 48 BSLINE is also BROWS.
*/

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#ifndef __GNU_STAB__
/* Indicate the GNU stab.h is in use. */
#define __GNU_STAB__
#define __define_stab(NAME, CODE, STRING) NAME=CODE,
#define __define_stab_duplicate(NAME, CODE, STRING) NAME=CODE,
enum __stab_debug_code
{
#include "aout/stab.def"
LAST_UNUSED_STAB_CODE
};
#undef __define_stab
/* Definitions of "desc" field for N_SO stabs in Solaris2. */
#define N_SO_AS 1
#define N_SO_C 2
#define N_SO_ANSI_C 3
#define N_SO_CC 4 /* C++ */
#define N_SO_FORTRAN 5
#define N_SO_PASCAL 6
/* Solaris2: Floating point type values in basic types. */
#define NF_NONE 0
#define NF_SINGLE 1 /* IEEE 32-bit */
#define NF_DOUBLE 2 /* IEEE 64-bit */
#define NF_COMPLEX 3 /* Fortran complex */
#define NF_COMPLEX16 4 /* Fortran double complex */
#define NF_COMPLEX32 5 /* Fortran complex*16 */
#define NF_LDOUBLE 6 /* Long double (whatever that is) */
#endif /* __GNU_STAB_ */

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/* SPARC-specific values for a.out files */
/* Some systems, e.g., AIX, may have defined this in header files already
included. */
#undef TARGET_PAGE_SIZE
#define TARGET_PAGE_SIZE 0x2000 /* 8K. aka NBPG in <sys/param.h> */
/* Note that some SPARCs have 4K pages, some 8K, some others. */
#define SEG_SIZE_SPARC TARGET_PAGE_SIZE
#define SEG_SIZE_SUN3 0x20000 /* Resolution of r/w protection hw */
#define TEXT_START_ADDR TARGET_PAGE_SIZE /* Location 0 is not accessible */
#define N_HEADER_IN_TEXT(x) 1
/* Non-default definitions of the accessor macros... */
/* Segment size varies on Sun-3 versus Sun-4. */
#define N_SEGSIZE(x) (N_MACHTYPE(x) == M_SPARC? SEG_SIZE_SPARC: \
N_MACHTYPE(x) == M_68020? SEG_SIZE_SUN3: \
/* Guess? */ TARGET_PAGE_SIZE)
/* Virtual Address of text segment from the a.out file. For OMAGIC,
(almost always "unlinked .o's" these days), should be zero.
Sun added a kludge so that shared libraries linked ZMAGIC get
an address of zero if a_entry (!!!) is lower than the otherwise
expected text address. These kludges have gotta go!
For linked files, should reflect reality if we know it. */
/* This differs from the version in aout64.h (which we override by defining
it here) only for NMAGIC (we return TEXT_START_ADDR+EXEC_BYTES_SIZE;
they return 0). */
#define N_TXTADDR(x) \
(N_MAGIC(x)==OMAGIC? 0 \
: (N_MAGIC(x) == ZMAGIC && (x).a_entry < TEXT_START_ADDR)? 0 \
: TEXT_START_ADDR+EXEC_BYTES_SIZE)
/* When a file is linked against a shared library on SunOS 4, the
dynamic bit in the exec header is set, and the first symbol in the
symbol table is __DYNAMIC. Its value is the address of the
following structure. */
struct external_sun4_dynamic
{
/* The version number of the structure. SunOS 4.1.x creates files
with version number 3, which is what this structure is based on.
According to gdb, version 2 is similar. I believe that version 2
used a different type of procedure linkage table, and there may
have been other differences. */
bfd_byte ld_version[4];
/* The virtual address of a 28 byte structure used in debugging.
The contents are filled in at run time by ld.so. */
bfd_byte ldd[4];
/* The virtual address of another structure with information about
how to relocate the executable at run time. */
bfd_byte ld[4];
};
/* The size of the debugging structure pointed to by the debugger
field of __DYNAMIC. */
#define EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE (24)
/* The structure pointed to by the linker field of __DYNAMIC. As far
as I can tell, most of the addresses in this structure are offsets
within the file, but some are actually virtual addresses. */
struct internal_sun4_dynamic_link
{
/* Linked list of loaded objects. This is filled in at runtime by
ld.so and probably by dlopen. */
unsigned long ld_loaded;
/* The address of the list of names of shared objects which must be
included at runtime. Each entry in the list is 16 bytes: the 4
byte address of the string naming the object (e.g., for -lc this
is "c"); 4 bytes of flags--the high bit is whether to search for
the object using the library path; the 2 byte major version
number; the 2 byte minor version number; the 4 byte address of
the next entry in the list (zero if this is the last entry). The
version numbers seem to only be non-zero when doing library
searching. */
unsigned long ld_need;
/* The address of the path to search for the shared objects which
must be included. This points to a string in PATH format which
is generated from the -L arguments to the linker. According to
the man page, ld.so implicitly adds ${LD_LIBRARY_PATH} to the
beginning of this string and /lib:/usr/lib:/usr/local/lib to the
end. The string is terminated by a null byte. This field is
zero if there is no additional path. */
unsigned long ld_rules;
/* The address of the global offset table. This appears to be a
virtual address, not a file offset. The first entry in the
global offset table seems to be the virtual address of the
sun4_dynamic structure (the same value as the __DYNAMIC symbol).
The global offset table is used for PIC code to hold the
addresses of variables. A dynamically linked file which does not
itself contain PIC code has a four byte global offset table. */
unsigned long ld_got;
/* The address of the procedure linkage table. This appears to be a
virtual address, not a file offset.
On a SPARC, the table is composed of 12 byte entries, each of
which consists of three instructions. The first entry is
sethi %hi(0),%g1
jmp %g1
nop
These instructions are changed by ld.so into a jump directly into
ld.so itself. Each subsequent entry is
save %sp, -96, %sp
call <address of first entry in procedure linkage table>
<reloc_number | 0x01000000>
The reloc_number is the number of the reloc to use to resolve
this entry. The reloc will be a JMP_SLOT reloc against some
symbol that is not defined in this object file but should be
defined in a shared object (if it is not, ld.so will report a
runtime error and exit). The constant 0x010000000 turns the
reloc number into a sethi of %g0, which does nothing since %g0 is
hardwired to zero.
When one of these entries is executed, it winds up calling into
ld.so. ld.so looks at the reloc number, available via the return
address, to determine which entry this is. It then looks at the
reloc and patches up the entry in the table into a sethi and jmp
to the real address followed by a nop. This means that the reloc
lookup only has to happen once, and it also means that the
relocation only needs to be done if the function is actually
called. The relocation is expensive because ld.so must look up
the symbol by name.
The size of the procedure linkage table is given by the ld_plt_sz
field. */
unsigned long ld_plt;
/* The address of the relocs. These are in the same format as
ordinary relocs. Symbol index numbers refer to the symbols
pointed to by ld_stab. I think the only way to determine the
number of relocs is to assume that all the bytes from ld_rel to
ld_hash contain reloc entries. */
unsigned long ld_rel;
/* The address of a hash table of symbols. The hash table has
roughly the same number of entries as there are dynamic symbols;
I think the only way to get the exact size is to assume that
every byte from ld_hash to ld_stab is devoted to the hash table.
Each entry in the hash table is eight bytes. The first four
bytes are a symbol index into the dynamic symbols. The second
four bytes are the index of the next hash table entry in the
bucket. The ld_buckets field gives the number of buckets, say B.
The first B entries in the hash table each start a bucket which
is chained through the second four bytes of each entry. A value
of zero ends the chain.
The hash function is simply
h = 0;
while (*string != '\0')
h = (h << 1) + *string++;
h &= 0x7fffffff;
To look up a symbol, compute the hash value of the name. Take
the modulos of hash value and the number of buckets. Start at
that entry in the hash table. See if the symbol (from the first
four bytes of the hash table entry) has the name you are looking
for. If not, use the chain field (the second four bytes of the
hash table entry) to move on to the next entry in this bucket.
If the chain field is zero you have reached the end of the
bucket, and the symbol is not in the hash table. */
unsigned long ld_hash;
/* The address of the symbol table. This is a list of
external_nlist structures. The string indices are relative to
the ld_symbols field. I think the only way to determine the
number of symbols is to assume that all the bytes between ld_stab
and ld_symbols are external_nlist structures. */
unsigned long ld_stab;
/* I don't know what this is for. It seems to always be zero. */
unsigned long ld_stab_hash;
/* The number of buckets in the hash table. */
unsigned long ld_buckets;
/* The address of the symbol string table. The first string in this
string table need not be the empty string. */
unsigned long ld_symbols;
/* The size in bytes of the symbol string table. */
unsigned long ld_symb_size;
/* The size in bytes of the text segment. */
unsigned long ld_text;
/* The size in bytes of the procedure linkage table. */
unsigned long ld_plt_sz;
};
/* The external form of the structure. */
struct external_sun4_dynamic_link
{
bfd_byte ld_loaded[4];
bfd_byte ld_need[4];
bfd_byte ld_rules[4];
bfd_byte ld_got[4];
bfd_byte ld_plt[4];
bfd_byte ld_rel[4];
bfd_byte ld_hash[4];
bfd_byte ld_stab[4];
bfd_byte ld_stab_hash[4];
bfd_byte ld_buckets[4];
bfd_byte ld_symbols[4];
bfd_byte ld_symb_size[4];
bfd_byte ld_text[4];
bfd_byte ld_plt_sz[4];
};