* aout64.h (N_TXTADDR, N_TXTOFF, N_TXTSIZE): New definitions
that should handle all uses. LOGICAL_ versions deleted. Eliminate N_HEADER_IN_TEXT, using a_entry to determine which kind of zmagic a.out file we are looking at. * coff-rs6000.h: Typo.
This commit is contained in:
John Gilmore
parent
98d4310737
commit
c6fec0bfcb
|
|
@ -1,3 +1,32 @@
|
|||
Thu Nov 21 11:53:03 1991 John Gilmore (gnu at cygnus.com)
|
||||
|
||||
* aout64.h (N_TXTADDR, N_TXTOFF, N_TXTSIZE): New definitions
|
||||
that should handle all uses. LOGICAL_ versions deleted.
|
||||
Eliminate N_HEADER_IN_TEXT, using a_entry to determine which
|
||||
kind of zmagic a.out file we are looking at.
|
||||
* coff-rs6000.h: Typo.
|
||||
|
||||
Tue Nov 19 18:43:37 1991 Per Bothner (bothner at cygnus.com)
|
||||
|
||||
(Note: This is a revised entry, as was aout64.h.)
|
||||
* aout64.h: Some cleanups of N_TXTADDR and N_TXTOFF:
|
||||
Will now work for both old- and new-style ZMAGIC files,
|
||||
depending on N_HEADER_IN_TEXT macro.
|
||||
Add LOGICAL_TXTADDR, LOICAL_TXTOFF and LOGICAL_TXTSIZE
|
||||
that don't count the exec header as part
|
||||
of the text segment, to be consistent with bfd.
|
||||
* a.out.sun4.h: Simplified/fixed for previous change.
|
||||
|
||||
Mon Nov 18 00:02:06 1991 Fred Fish (fnf at cygnus.com)
|
||||
|
||||
* dwarf.h: Update to DWARF draft 5 version from gcc2.
|
||||
|
||||
Thu Nov 14 19:44:59 1991 Per Bothner (bothner at cygnus.com)
|
||||
|
||||
* stab.def: Added defs for extended GNU symbol types,
|
||||
such as N_SETT. These are normally ifdef'd out (because
|
||||
of conflicts with a.out.gnu.h), but are used by bfb_stab_name().
|
||||
|
||||
Thu Nov 14 19:17:03 1991 Fred Fish (fnf at cygnus.com)
|
||||
|
||||
* elf-common.h: Add defines to support ELF symbol table code.
|
||||
|
|
|
|||
137
include/aout64.h
137
include/aout64.h
|
|
@ -19,60 +19,14 @@ struct external_exec
|
|||
|
||||
#define EXEC_BYTES_SIZE (4 + BYTES_IN_WORD * 7)
|
||||
|
||||
/* By default, segment size is constant. But on some machines, it can
|
||||
be a function of the a.out header (e.g. machine type). */
|
||||
#ifndef N_SEGSIZE
|
||||
#define N_SEGSIZE(x) SEGMENT_SIZE
|
||||
#endif
|
||||
|
||||
#define _N_HDROFF(x) (N_SEGSIZE(x) - EXEC_BYTES_SIZE)
|
||||
|
||||
/* If the exec header is mapped in as part of a shared text segemnt.
|
||||
Only relevant for ZMAGIC files. */
|
||||
|
||||
#ifndef N_HEADER_IN_TEXT
|
||||
#define N_HEADER_IN_TEXT(x) 1
|
||||
#endif
|
||||
|
||||
/* Virtual memory address of the text section. When demand paged, it's
|
||||
set up a bit to make nothing at 0, when an object file it's 0.
|
||||
There's a special hack case when the entry point is < TEXT_START_ADDR
|
||||
for executables, then the real start is 0
|
||||
|
||||
Note that this differs from Sun's definition: They consider
|
||||
the text segment to start at 0x2000; we view it as starting at 0x2000.
|
||||
I.e., we never consider the exec header to be part of the text segment.
|
||||
*/
|
||||
|
||||
#ifndef N_TXTADDR
|
||||
#define N_TXTADDR(x) \
|
||||
(N_MAGIC(x)!=ZMAGIC? 0 : TEXT_START_ADDR)
|
||||
#endif
|
||||
|
||||
/* Offset in an a.out of the start of the text section. */
|
||||
|
||||
#define N_TXTOFF(x) ( N_MAGIC(x) != ZMAGIC ? EXEC_BYTES_SIZE \
|
||||
: N_HEADER_IN_TEXT(x) ? 0 : PAGE_SIZE)
|
||||
|
||||
/* These are the same as N_TXTADDR and N_TXTOFF,
|
||||
but never consider the exec header to be includes in the text. */
|
||||
|
||||
#define LOGICAL_TXTADDR(x) \
|
||||
(N_MAGIC(x)!=ZMAGIC? 0 \
|
||||
: N_HEADER_IN_TEXT(x) ? TEXT_START_ADDR+EXEC_BYTES_SIZE \
|
||||
: TEXT_START_ADDR)
|
||||
#define LOGICAL_TXTOFF(x) ( N_MAGIC(x) != ZMAGIC ? EXEC_BYTES_SIZE \
|
||||
: N_HEADER_IN_TEXT(x) ? EXEC_BYTES_SIZE : PAGE_SIZE)
|
||||
#define LOGICAL_TXTSIZE(x) \
|
||||
((x).a_text \
|
||||
- (N_HEADER_IN_TEXT(x) && N_MAGIC(x)==ZMAGIC ? EXEC_BYTES_SIZE : 0))
|
||||
/* 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. */
|
||||
#else
|
||||
#define OMAGIC 0407 /* Code indicating 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. */
|
||||
#endif
|
||||
|
|
@ -81,22 +35,97 @@ struct external_exec
|
|||
&& N_MAGIC(x) != NMAGIC \
|
||||
&& N_MAGIC(x) != 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
|
||||
|
||||
/* 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.
|
||||
* 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.
|
||||
* 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. */
|
||||
|
||||
#ifndef N_TXTADDR
|
||||
#define N_TXTADDR(x) \
|
||||
( (N_MAGIC(x) != ZMAGIC)? \
|
||||
0: /* object file or NMAGIC */\
|
||||
((x).a_entry < TEXT_START_ADDR)? \
|
||||
0: /* shared lib */\
|
||||
( (((x).a_entry & (PAGE_SIZE-1)) >= EXEC_BYTES_SIZE) ? \
|
||||
TEXT_START_ADDR + EXEC_BYTES_SIZE: /* no padding */\
|
||||
TEXT_START_ADDR /* a page of padding */\
|
||||
) \
|
||||
)
|
||||
#endif
|
||||
|
||||
/* Offset in an a.out of the start of the text section. */
|
||||
|
||||
#define N_TXTOFF(x) \
|
||||
( (N_MAGIC(x) != ZMAGIC)? \
|
||||
EXEC_BYTES_SIZE: /* object file or NMAGIC */\
|
||||
((x).a_entry < TEXT_START_ADDR)? \
|
||||
0: /* shared lib */\
|
||||
( (((x).a_entry & (PAGE_SIZE-1)) >= EXEC_BYTES_SIZE) ? \
|
||||
EXEC_BYTES_SIZE: /* no padding */\
|
||||
PAGE_SIZE /* a page of padding */\
|
||||
) \
|
||||
)
|
||||
|
||||
/* 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 NMAGIC/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.) */
|
||||
|
||||
#define N_TXTSIZE(x) \
|
||||
( (N_MAGIC(x) != ZMAGIC)? \
|
||||
(x).a_text: /* object file or NMAGIC */\
|
||||
((x).a_entry < TEXT_START_ADDR)? \
|
||||
(x).a_text: /* shared lib */\
|
||||
( (((x).a_entry & (PAGE_SIZE-1)) >= EXEC_BYTES_SIZE) ? \
|
||||
(x).a_text - EXEC_BYTES_SIZE: /* no padding */\
|
||||
(x).a_text /* a page of padding */\
|
||||
) \
|
||||
)
|
||||
|
||||
/* 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. */
|
||||
|
||||
#define N_DATADDR(x) \
|
||||
(N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) \
|
||||
: (N_SEGSIZE(x) + ((N_TXTADDR(x)+(x).a_text-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) & ~(N_SEGSIZE(x)-1))))
|
||||
|
||||
#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
|
||||
/* The address of the BSS segment -- immediately after the data segment. */
|
||||
|
||||
#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
|
||||
|
||||
#define N_DATOFF(x) ( N_TXTOFF(x) + (x).a_text )
|
||||
/* 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 */
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
/* IBM RS/6000 "XCOFF" file definitions for BFD.
|
||||
Copyright (C) 1990, 1991 Free Software Foundation, Inc.
|
||||
Written by Mimi Phûông-Thåo Võ and John Gilmore.
|
||||
Contributed by IBM Corporation and Cygnus Support.
|
||||
Contributed by IBM Corporation and Cygnus Support. */
|
||||
|
||||
/********************** FILE HEADER **********************/
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue