mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
97d40d3d4a
us up to version 2.17.50.20070703, at the last GPLv2 commit. Amongst others, this added upstream support for some FreeBSD-specific things that we previously had to manually hack in, such as the OSABI label support, and so on. There are also quite a number of new files, some for cpu's (e.g. SPU) that we may or may not be interested in, but those can be cleaned up later on, if needed.
794 lines
26 KiB
Objective-C
794 lines
26 KiB
Objective-C
/* A.out "format 1" file handling code for BFD.
|
||
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000,
|
||
2001, 2002, 2003, 2004, 2005, 2006, 2007
|
||
Free Software Foundation, Inc.
|
||
Written by Cygnus Support.
|
||
|
||
This file is part of BFD, the Binary File Descriptor library.
|
||
|
||
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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
|
||
|
||
#include "sysdep.h"
|
||
#include "bfd.h"
|
||
#include "libbfd.h"
|
||
|
||
#include "aout/sun4.h"
|
||
#include "libaout.h" /* BFD a.out internal data structures. */
|
||
|
||
#include "aout/aout64.h"
|
||
#include "aout/stab_gnu.h"
|
||
#include "aout/ar.h"
|
||
|
||
/* This is needed to reject a NewsOS file, e.g. in
|
||
gdb/testsuite/gdb.t10/crossload.exp. <kingdon@cygnus.com>
|
||
I needed to add M_UNKNOWN to recognize a 68000 object, so this will
|
||
probably no longer reject a NewsOS object. <ian@cygnus.com>. */
|
||
#ifndef MACHTYPE_OK
|
||
#define MACHTYPE_OK(mtype) \
|
||
(((mtype) == M_SPARC && bfd_lookup_arch (bfd_arch_sparc, 0) != NULL) \
|
||
|| (((mtype) == M_UNKNOWN || (mtype) == M_68010 || (mtype) == M_68020) \
|
||
&& bfd_lookup_arch (bfd_arch_m68k, 0) != NULL))
|
||
#endif
|
||
|
||
/* The file @code{aoutf1.h} contains the code for BFD's
|
||
a.out back end. Control over the generated back end is given by these
|
||
two preprocessor names:
|
||
@table @code
|
||
@item ARCH_SIZE
|
||
This value should be either 32 or 64, depending upon the size of an
|
||
int in the target format. It changes the sizes of the structs which
|
||
perform the memory/disk mapping of structures.
|
||
|
||
The 64 bit backend may only be used if the host compiler supports 64
|
||
ints (eg long long with gcc), by defining the name @code{BFD_HOST_64_BIT} in @code{bfd.h}.
|
||
With this name defined, @emph{all} bfd operations are performed with 64bit
|
||
arithmetic, not just those to a 64bit target.
|
||
|
||
@item TARGETNAME
|
||
The name put into the target vector.
|
||
@item
|
||
@end table. */
|
||
|
||
#if ARCH_SIZE == 64
|
||
#define sunos_set_arch_mach sunos_64_set_arch_mach
|
||
#define sunos_write_object_contents aout_64_sunos4_write_object_contents
|
||
#else
|
||
#define sunos_set_arch_mach sunos_32_set_arch_mach
|
||
#define sunos_write_object_contents aout_32_sunos4_write_object_contents
|
||
#endif
|
||
|
||
/* Merge backend data into the output file.
|
||
This is necessary on sparclet-aout where we want the resultant machine
|
||
number to be M_SPARCLET if any input file is M_SPARCLET. */
|
||
|
||
#define MY_bfd_merge_private_bfd_data sunos_merge_private_bfd_data
|
||
|
||
static bfd_boolean
|
||
sunos_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
|
||
{
|
||
if (bfd_get_flavour (ibfd) != bfd_target_aout_flavour
|
||
|| bfd_get_flavour (obfd) != bfd_target_aout_flavour)
|
||
return TRUE;
|
||
|
||
if (bfd_get_arch (obfd) == bfd_arch_sparc)
|
||
{
|
||
if (bfd_get_mach (obfd) < bfd_get_mach (ibfd))
|
||
bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd));
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* This is either sunos_32_set_arch_mach or sunos_64_set_arch_mach,
|
||
depending upon ARCH_SIZE. */
|
||
|
||
static void
|
||
sunos_set_arch_mach (bfd *abfd, enum machine_type machtype)
|
||
{
|
||
/* Determine the architecture and machine type of the object file. */
|
||
enum bfd_architecture arch;
|
||
unsigned long machine;
|
||
|
||
switch (machtype)
|
||
{
|
||
case M_UNKNOWN:
|
||
/* Some Sun3s make magic numbers without cpu types in them, so
|
||
we'll default to the 68000. */
|
||
arch = bfd_arch_m68k;
|
||
machine = bfd_mach_m68000;
|
||
break;
|
||
|
||
case M_68010:
|
||
case M_HP200:
|
||
arch = bfd_arch_m68k;
|
||
machine = bfd_mach_m68010;
|
||
break;
|
||
|
||
case M_68020:
|
||
case M_HP300:
|
||
arch = bfd_arch_m68k;
|
||
machine = bfd_mach_m68020;
|
||
break;
|
||
|
||
case M_SPARC:
|
||
arch = bfd_arch_sparc;
|
||
machine = 0;
|
||
break;
|
||
|
||
case M_SPARCLET:
|
||
arch = bfd_arch_sparc;
|
||
machine = bfd_mach_sparc_sparclet;
|
||
break;
|
||
|
||
case M_SPARCLITE_LE:
|
||
arch = bfd_arch_sparc;
|
||
machine = bfd_mach_sparc_sparclite_le;
|
||
break;
|
||
|
||
case M_386:
|
||
case M_386_DYNIX:
|
||
arch = bfd_arch_i386;
|
||
machine = 0;
|
||
break;
|
||
|
||
case M_HPUX:
|
||
arch = bfd_arch_m68k;
|
||
machine = 0;
|
||
break;
|
||
|
||
default:
|
||
arch = bfd_arch_obscure;
|
||
machine = 0;
|
||
break;
|
||
}
|
||
bfd_set_arch_mach (abfd, arch, machine);
|
||
}
|
||
|
||
#define SET_ARCH_MACH(ABFD, EXEC) \
|
||
NAME(sunos,set_arch_mach) (ABFD, N_MACHTYPE (EXEC)); \
|
||
choose_reloc_size(ABFD);
|
||
|
||
/* Determine the size of a relocation entry, based on the architecture. */
|
||
|
||
static void
|
||
choose_reloc_size (bfd *abfd)
|
||
{
|
||
switch (bfd_get_arch (abfd))
|
||
{
|
||
case bfd_arch_sparc:
|
||
obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
|
||
break;
|
||
default:
|
||
obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Write an object file in SunOS format. Section contents have
|
||
already been written. We write the file header, symbols, and
|
||
relocation. The real name of this function is either
|
||
aout_64_sunos4_write_object_contents or
|
||
aout_32_sunos4_write_object_contents, depending upon ARCH_SIZE. */
|
||
|
||
static bfd_boolean
|
||
sunos_write_object_contents (bfd *abfd)
|
||
{
|
||
struct external_exec exec_bytes;
|
||
struct internal_exec *execp = exec_hdr (abfd);
|
||
|
||
/* Magic number, maestro, please! */
|
||
switch (bfd_get_arch (abfd))
|
||
{
|
||
case bfd_arch_m68k:
|
||
switch (bfd_get_mach (abfd))
|
||
{
|
||
case bfd_mach_m68000:
|
||
N_SET_MACHTYPE (*execp, M_UNKNOWN);
|
||
break;
|
||
case bfd_mach_m68010:
|
||
N_SET_MACHTYPE (*execp, M_68010);
|
||
break;
|
||
default:
|
||
case bfd_mach_m68020:
|
||
N_SET_MACHTYPE (*execp, M_68020);
|
||
break;
|
||
}
|
||
break;
|
||
case bfd_arch_sparc:
|
||
switch (bfd_get_mach (abfd))
|
||
{
|
||
case bfd_mach_sparc_sparclet:
|
||
N_SET_MACHTYPE (*execp, M_SPARCLET);
|
||
break;
|
||
case bfd_mach_sparc_sparclite_le:
|
||
N_SET_MACHTYPE (*execp, M_SPARCLITE_LE);
|
||
break;
|
||
default:
|
||
N_SET_MACHTYPE (*execp, M_SPARC);
|
||
break;
|
||
}
|
||
break;
|
||
case bfd_arch_i386:
|
||
N_SET_MACHTYPE (*execp, M_386);
|
||
break;
|
||
default:
|
||
N_SET_MACHTYPE (*execp, M_UNKNOWN);
|
||
}
|
||
|
||
choose_reloc_size (abfd);
|
||
|
||
N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);
|
||
|
||
N_SET_DYNAMIC (*execp, (long)(bfd_get_file_flags (abfd) & DYNAMIC));
|
||
|
||
WRITE_HEADERS (abfd, execp);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Core files. */
|
||
|
||
#define CORE_MAGIC 0x080456
|
||
#define CORE_NAMELEN 16
|
||
|
||
/* The core structure is taken from the Sun documentation.
|
||
Unfortunately, they don't document the FPA structure, or at least I
|
||
can't find it easily. Fortunately the core header contains its own
|
||
length. So this shouldn't cause problems, except for c_ucode, which
|
||
so far we don't use but is easy to find with a little arithmetic. */
|
||
|
||
/* But the reg structure can be gotten from the SPARC processor handbook.
|
||
This really should be in a GNU include file though so that gdb can use
|
||
the same info. */
|
||
struct regs
|
||
{
|
||
int r_psr;
|
||
int r_pc;
|
||
int r_npc;
|
||
int r_y;
|
||
int r_g1;
|
||
int r_g2;
|
||
int r_g3;
|
||
int r_g4;
|
||
int r_g5;
|
||
int r_g6;
|
||
int r_g7;
|
||
int r_o0;
|
||
int r_o1;
|
||
int r_o2;
|
||
int r_o3;
|
||
int r_o4;
|
||
int r_o5;
|
||
int r_o6;
|
||
int r_o7;
|
||
};
|
||
|
||
/* Taken from Sun documentation: */
|
||
|
||
/* FIXME: It's worse than we expect. This struct contains TWO substructs
|
||
neither of whose size we know, WITH STUFF IN BETWEEN THEM! We can't
|
||
even portably access the stuff in between! */
|
||
|
||
struct external_sparc_core
|
||
{
|
||
int c_magic; /* Corefile magic number. */
|
||
int c_len; /* Sizeof (struct core). */
|
||
#define SPARC_CORE_LEN 432
|
||
struct regs c_regs; /* General purpose registers -- MACHDEP SIZE. */
|
||
struct external_exec c_aouthdr; /* A.out header. */
|
||
int c_signo; /* Killing signal, if any. */
|
||
int c_tsize; /* Text size (bytes). */
|
||
int c_dsize; /* Data size (bytes). */
|
||
int c_ssize; /* Stack size (bytes). */
|
||
char c_cmdname[CORE_NAMELEN + 1]; /* Command name. */
|
||
double fp_stuff[1]; /* External FPU state (size unknown by us). */
|
||
/* The type "double" is critical here, for alignment.
|
||
SunOS declares a struct here, but the struct's
|
||
alignment is double since it contains doubles. */
|
||
int c_ucode; /* Exception no. from u_code. */
|
||
/* This member is not accessible by name since
|
||
we don't portably know the size of fp_stuff. */
|
||
};
|
||
|
||
/* Core files generated by the BCP (the part of Solaris which allows
|
||
it to run SunOS4 a.out files). */
|
||
struct external_solaris_bcp_core
|
||
{
|
||
int c_magic; /* Corefile magic number. */
|
||
int c_len; /* Sizeof (struct core). */
|
||
#define SOLARIS_BCP_CORE_LEN 456
|
||
struct regs c_regs; /* General purpose registers -- MACHDEP SIZE. */
|
||
int c_exdata_vp; /* Exdata structure. */
|
||
int c_exdata_tsize;
|
||
int c_exdata_dsize;
|
||
int c_exdata_bsize;
|
||
int c_exdata_lsize;
|
||
int c_exdata_nshlibs;
|
||
short c_exdata_mach;
|
||
short c_exdata_mag;
|
||
int c_exdata_toffset;
|
||
int c_exdata_doffset;
|
||
int c_exdata_loffset;
|
||
int c_exdata_txtorg;
|
||
int c_exdata_datorg;
|
||
int c_exdata_entloc;
|
||
int c_signo; /* Killing signal, if any. */
|
||
int c_tsize; /* Text size (bytes). */
|
||
int c_dsize; /* Data size (bytes). */
|
||
int c_ssize; /* Stack size (bytes). */
|
||
char c_cmdname[CORE_NAMELEN + 1]; /* Command name. */
|
||
double fp_stuff[1]; /* External FPU state (size unknown by us). */
|
||
/* The type "double" is critical here, for alignment.
|
||
SunOS declares a struct here, but the struct's
|
||
alignment is double since it contains doubles. */
|
||
int c_ucode; /* Exception no. from u_code. */
|
||
/* This member is not accessible by name since
|
||
we don't portably know the size of fp_stuff. */
|
||
};
|
||
|
||
struct external_sun3_core
|
||
{
|
||
int c_magic; /* Corefile magic number. */
|
||
int c_len; /* Sizeof (struct core). */
|
||
#define SUN3_CORE_LEN 826 /* As of SunOS 4.1.1. */
|
||
int c_regs[18]; /* General purpose registers -- MACHDEP SIZE. */
|
||
struct external_exec c_aouthdr; /* A.out header. */
|
||
int c_signo; /* Killing signal, if any. */
|
||
int c_tsize; /* Text size (bytes). */
|
||
int c_dsize; /* Data size (bytes). */
|
||
int c_ssize; /* Stack size (bytes). */
|
||
char c_cmdname[CORE_NAMELEN + 1]; /* Command name. */
|
||
double fp_stuff[1]; /* External FPU state (size unknown by us). */
|
||
/* The type "double" is critical here, for alignment.
|
||
SunOS declares a struct here, but the struct's
|
||
alignment is double since it contains doubles. */
|
||
int c_ucode; /* Exception no. from u_code. */
|
||
/* This member is not accessible by name since
|
||
we don't portably know the size of fp_stuff. */
|
||
};
|
||
|
||
struct internal_sunos_core
|
||
{
|
||
int c_magic; /* Corefile magic number. */
|
||
int c_len; /* Sizeof (struct core). */
|
||
long c_regs_pos; /* File offset of General purpose registers. */
|
||
int c_regs_size; /* Size of General purpose registers. */
|
||
struct internal_exec c_aouthdr; /* A.out header. */
|
||
int c_signo; /* Killing signal, if any. */
|
||
int c_tsize; /* Text size (bytes). */
|
||
int c_dsize; /* Data size (bytes). */
|
||
bfd_vma c_data_addr; /* Data start (address). */
|
||
int c_ssize; /* Stack size (bytes). */
|
||
bfd_vma c_stacktop; /* Stack top (address). */
|
||
char c_cmdname[CORE_NAMELEN + 1]; /* Command name. */
|
||
long fp_stuff_pos; /* File offset of external FPU state (regs). */
|
||
int fp_stuff_size; /* Size of it. */
|
||
int c_ucode; /* Exception no. from u_code. */
|
||
};
|
||
|
||
/* Byte-swap in the Sun-3 core structure. */
|
||
|
||
static void
|
||
swapcore_sun3 (bfd *abfd, char *ext, struct internal_sunos_core *intcore)
|
||
{
|
||
struct external_sun3_core *extcore = (struct external_sun3_core *) ext;
|
||
|
||
intcore->c_magic = H_GET_32 (abfd, &extcore->c_magic);
|
||
intcore->c_len = H_GET_32 (abfd, &extcore->c_len);
|
||
intcore->c_regs_pos = offsetof (struct external_sun3_core, c_regs);
|
||
intcore->c_regs_size = sizeof (extcore->c_regs);
|
||
#if ARCH_SIZE == 64
|
||
aout_64_swap_exec_header_in
|
||
#else
|
||
aout_32_swap_exec_header_in
|
||
#endif
|
||
(abfd, &extcore->c_aouthdr, &intcore->c_aouthdr);
|
||
intcore->c_signo = H_GET_32 (abfd, &extcore->c_signo);
|
||
intcore->c_tsize = H_GET_32 (abfd, &extcore->c_tsize);
|
||
intcore->c_dsize = H_GET_32 (abfd, &extcore->c_dsize);
|
||
intcore->c_data_addr = N_DATADDR (intcore->c_aouthdr);
|
||
intcore->c_ssize = H_GET_32 (abfd, &extcore->c_ssize);
|
||
memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname));
|
||
intcore->fp_stuff_pos = offsetof (struct external_sun3_core, fp_stuff);
|
||
/* FP stuff takes up whole rest of struct, except c_ucode. */
|
||
intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
|
||
offsetof (struct external_sun3_core, fp_stuff);
|
||
/* Ucode is the last thing in the struct -- just before the end. */
|
||
intcore->c_ucode = H_GET_32 (abfd,
|
||
(intcore->c_len
|
||
- sizeof (extcore->c_ucode)
|
||
+ (unsigned char *) extcore));
|
||
intcore->c_stacktop = 0x0E000000; /* By experimentation. */
|
||
}
|
||
|
||
/* Byte-swap in the Sparc core structure. */
|
||
|
||
static void
|
||
swapcore_sparc (bfd *abfd, char *ext, struct internal_sunos_core *intcore)
|
||
{
|
||
struct external_sparc_core *extcore = (struct external_sparc_core *) ext;
|
||
|
||
intcore->c_magic = H_GET_32 (abfd, &extcore->c_magic);
|
||
intcore->c_len = H_GET_32 (abfd, &extcore->c_len);
|
||
intcore->c_regs_pos = offsetof (struct external_sparc_core, c_regs);
|
||
intcore->c_regs_size = sizeof (extcore->c_regs);
|
||
#if ARCH_SIZE == 64
|
||
aout_64_swap_exec_header_in
|
||
#else
|
||
aout_32_swap_exec_header_in
|
||
#endif
|
||
(abfd, &extcore->c_aouthdr, &intcore->c_aouthdr);
|
||
intcore->c_signo = H_GET_32 (abfd, &extcore->c_signo);
|
||
intcore->c_tsize = H_GET_32 (abfd, &extcore->c_tsize);
|
||
intcore->c_dsize = H_GET_32 (abfd, &extcore->c_dsize);
|
||
intcore->c_data_addr = N_DATADDR (intcore->c_aouthdr);
|
||
intcore->c_ssize = H_GET_32 (abfd, &extcore->c_ssize);
|
||
memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname));
|
||
intcore->fp_stuff_pos = offsetof (struct external_sparc_core, fp_stuff);
|
||
/* FP stuff takes up whole rest of struct, except c_ucode. */
|
||
intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
|
||
offsetof (struct external_sparc_core, fp_stuff);
|
||
/* Ucode is the last thing in the struct -- just before the end. */
|
||
intcore->c_ucode = H_GET_32 (abfd,
|
||
(intcore->c_len
|
||
- sizeof (extcore->c_ucode)
|
||
+ (unsigned char *) extcore));
|
||
|
||
/* Supposedly the user stack grows downward from the bottom of kernel memory.
|
||
Presuming that this remains true, this definition will work. */
|
||
/* Now sun has provided us with another challenge. The value is different
|
||
for sparc2 and sparc10 (both running SunOS 4.1.3). We pick one or
|
||
the other based on the current value of the stack pointer. This
|
||
loses (a) if the stack pointer has been clobbered, or (b) if the stack
|
||
is larger than 128 megabytes.
|
||
|
||
It's times like these you're glad they're switching to ELF.
|
||
|
||
Note that using include files or nlist on /vmunix would be wrong,
|
||
because we want the value for this core file, no matter what kind of
|
||
machine we were compiled on or are running on. */
|
||
#define SPARC_USRSTACK_SPARC2 ((bfd_vma)0xf8000000)
|
||
#define SPARC_USRSTACK_SPARC10 ((bfd_vma)0xf0000000)
|
||
{
|
||
bfd_vma sp = H_GET_32 (abfd, &extcore->c_regs.r_o6);
|
||
if (sp < SPARC_USRSTACK_SPARC10)
|
||
intcore->c_stacktop = SPARC_USRSTACK_SPARC10;
|
||
else
|
||
intcore->c_stacktop = SPARC_USRSTACK_SPARC2;
|
||
}
|
||
}
|
||
|
||
/* Byte-swap in the Solaris BCP core structure. */
|
||
|
||
static void
|
||
swapcore_solaris_bcp (bfd *abfd, char *ext, struct internal_sunos_core *intcore)
|
||
{
|
||
struct external_solaris_bcp_core *extcore =
|
||
(struct external_solaris_bcp_core *) ext;
|
||
|
||
intcore->c_magic = H_GET_32 (abfd, &extcore->c_magic);
|
||
intcore->c_len = H_GET_32 (abfd, &extcore->c_len);
|
||
intcore->c_regs_pos = offsetof (struct external_solaris_bcp_core, c_regs);
|
||
intcore->c_regs_size = sizeof (extcore->c_regs);
|
||
|
||
/* The Solaris BCP exdata structure does not contain an a_syms field,
|
||
so we are unable to synthesize an internal exec header.
|
||
Luckily we are able to figure out the start address of the data section,
|
||
which is the only thing needed from the internal exec header,
|
||
from the exdata structure.
|
||
|
||
As of Solaris 2.3, BCP core files for statically linked executables
|
||
are buggy. The exdata structure is not properly filled in, and
|
||
the data section is written from address zero instead of the data
|
||
start address. */
|
||
memset ((void *) &intcore->c_aouthdr, 0, sizeof (struct internal_exec));
|
||
intcore->c_data_addr = H_GET_32 (abfd, &extcore->c_exdata_datorg);
|
||
intcore->c_signo = H_GET_32 (abfd, &extcore->c_signo);
|
||
intcore->c_tsize = H_GET_32 (abfd, &extcore->c_tsize);
|
||
intcore->c_dsize = H_GET_32 (abfd, &extcore->c_dsize);
|
||
intcore->c_ssize = H_GET_32 (abfd, &extcore->c_ssize);
|
||
memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname));
|
||
intcore->fp_stuff_pos =
|
||
offsetof (struct external_solaris_bcp_core, fp_stuff);
|
||
/* FP stuff takes up whole rest of struct, except c_ucode. */
|
||
intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
|
||
offsetof (struct external_solaris_bcp_core, fp_stuff);
|
||
/* Ucode is the last thing in the struct -- just before the end */
|
||
intcore->c_ucode = H_GET_32 (abfd,
|
||
(intcore->c_len
|
||
- sizeof (extcore->c_ucode)
|
||
+ (unsigned char *) extcore));
|
||
|
||
/* Supposedly the user stack grows downward from the bottom of kernel memory.
|
||
Presuming that this remains true, this definition will work. */
|
||
/* Now sun has provided us with another challenge. The value is different
|
||
for sparc2 and sparc10 (both running SunOS 4.1.3). We pick one or
|
||
the other based on the current value of the stack pointer. This
|
||
loses (a) if the stack pointer has been clobbered, or (b) if the stack
|
||
is larger than 128 megabytes.
|
||
|
||
It's times like these you're glad they're switching to ELF.
|
||
|
||
Note that using include files or nlist on /vmunix would be wrong,
|
||
because we want the value for this core file, no matter what kind of
|
||
machine we were compiled on or are running on. */
|
||
#define SPARC_USRSTACK_SPARC2 ((bfd_vma)0xf8000000)
|
||
#define SPARC_USRSTACK_SPARC10 ((bfd_vma)0xf0000000)
|
||
{
|
||
bfd_vma sp = H_GET_32 (abfd, &extcore->c_regs.r_o6);
|
||
if (sp < SPARC_USRSTACK_SPARC10)
|
||
intcore->c_stacktop = SPARC_USRSTACK_SPARC10;
|
||
else
|
||
intcore->c_stacktop = SPARC_USRSTACK_SPARC2;
|
||
}
|
||
}
|
||
|
||
/* Need this cast because ptr is really void *. */
|
||
#define core_hdr(bfd) ((bfd)->tdata.sun_core_data)
|
||
#define core_datasec(bfd) (core_hdr (bfd)->data_section)
|
||
#define core_stacksec(bfd) (core_hdr (bfd)->stack_section)
|
||
#define core_regsec(bfd) (core_hdr (bfd)->reg_section)
|
||
#define core_reg2sec(bfd) (core_hdr (bfd)->reg2_section)
|
||
|
||
/* These are stored in the bfd's tdata. */
|
||
struct sun_core_struct
|
||
{
|
||
struct internal_sunos_core *hdr; /* Core file header. */
|
||
asection *data_section;
|
||
asection *stack_section;
|
||
asection *reg_section;
|
||
asection *reg2_section;
|
||
};
|
||
|
||
static const bfd_target *
|
||
sunos4_core_file_p (bfd *abfd)
|
||
{
|
||
unsigned char longbuf[4]; /* Raw bytes of various header fields. */
|
||
bfd_size_type core_size, amt;
|
||
unsigned long core_mag;
|
||
struct internal_sunos_core *core;
|
||
char *extcore;
|
||
struct mergem
|
||
{
|
||
struct sun_core_struct suncoredata;
|
||
struct internal_sunos_core internal_sunos_core;
|
||
char external_core[1];
|
||
} *mergem;
|
||
flagword flags;
|
||
|
||
if (bfd_bread ((void *) longbuf, (bfd_size_type) sizeof (longbuf), abfd)
|
||
!= sizeof (longbuf))
|
||
return NULL;
|
||
core_mag = H_GET_32 (abfd, longbuf);
|
||
|
||
if (core_mag != CORE_MAGIC)
|
||
return NULL;
|
||
|
||
/* SunOS core headers can vary in length; second word is size; */
|
||
if (bfd_bread ((void *) longbuf, (bfd_size_type) sizeof (longbuf), abfd)
|
||
!= sizeof (longbuf))
|
||
return NULL;
|
||
core_size = H_GET_32 (abfd, longbuf);
|
||
/* Sanity check. */
|
||
if (core_size > 20000)
|
||
return NULL;
|
||
|
||
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
|
||
return NULL;
|
||
|
||
amt = core_size + sizeof (struct mergem);
|
||
mergem = bfd_zalloc (abfd, amt);
|
||
if (mergem == NULL)
|
||
return NULL;
|
||
|
||
extcore = mergem->external_core;
|
||
|
||
if ((bfd_bread ((void *) extcore, core_size, abfd)) != core_size)
|
||
{
|
||
loser:
|
||
bfd_release (abfd, (char *) mergem);
|
||
abfd->tdata.any = NULL;
|
||
bfd_section_list_clear (abfd);
|
||
return NULL;
|
||
}
|
||
|
||
/* Validate that it's a core file we know how to handle, due to sun
|
||
botching the positioning of registers and other fields in a machine
|
||
dependent way. */
|
||
core = &mergem->internal_sunos_core;
|
||
switch (core_size)
|
||
{
|
||
case SPARC_CORE_LEN:
|
||
swapcore_sparc (abfd, extcore, core);
|
||
break;
|
||
case SUN3_CORE_LEN:
|
||
swapcore_sun3 (abfd, extcore, core);
|
||
break;
|
||
case SOLARIS_BCP_CORE_LEN:
|
||
swapcore_solaris_bcp (abfd, extcore, core);
|
||
break;
|
||
default:
|
||
bfd_set_error (bfd_error_system_call); /* FIXME. */
|
||
goto loser;
|
||
}
|
||
|
||
abfd->tdata.sun_core_data = &mergem->suncoredata;
|
||
abfd->tdata.sun_core_data->hdr = core;
|
||
|
||
/* Create the sections. */
|
||
flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
|
||
core_stacksec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".stack",
|
||
flags);
|
||
if (core_stacksec (abfd) == NULL)
|
||
/* bfd_release frees everything allocated after it's arg. */
|
||
goto loser;
|
||
|
||
flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
|
||
core_datasec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".data",
|
||
flags);
|
||
if (core_datasec (abfd) == NULL)
|
||
goto loser;
|
||
|
||
flags = SEC_HAS_CONTENTS;
|
||
core_regsec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".reg",
|
||
flags);
|
||
if (core_regsec (abfd) == NULL)
|
||
goto loser;
|
||
|
||
flags = SEC_HAS_CONTENTS;
|
||
core_reg2sec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".reg2",
|
||
flags);
|
||
if (core_reg2sec (abfd) == NULL)
|
||
goto loser;
|
||
|
||
core_stacksec (abfd)->size = core->c_ssize;
|
||
core_datasec (abfd)->size = core->c_dsize;
|
||
core_regsec (abfd)->size = core->c_regs_size;
|
||
core_reg2sec (abfd)->size = core->fp_stuff_size;
|
||
|
||
core_stacksec (abfd)->vma = (core->c_stacktop - core->c_ssize);
|
||
core_datasec (abfd)->vma = core->c_data_addr;
|
||
core_regsec (abfd)->vma = 0;
|
||
core_reg2sec (abfd)->vma = 0;
|
||
|
||
core_stacksec (abfd)->filepos = core->c_len + core->c_dsize;
|
||
core_datasec (abfd)->filepos = core->c_len;
|
||
/* We'll access the regs afresh in the core file, like any section: */
|
||
core_regsec (abfd)->filepos = (file_ptr) core->c_regs_pos;
|
||
core_reg2sec (abfd)->filepos = (file_ptr) core->fp_stuff_pos;
|
||
|
||
/* Align to word at least. */
|
||
core_stacksec (abfd)->alignment_power = 2;
|
||
core_datasec (abfd)->alignment_power = 2;
|
||
core_regsec (abfd)->alignment_power = 2;
|
||
core_reg2sec (abfd)->alignment_power = 2;
|
||
|
||
return abfd->xvec;
|
||
}
|
||
|
||
static char *
|
||
sunos4_core_file_failing_command (bfd *abfd)
|
||
{
|
||
return core_hdr (abfd)->hdr->c_cmdname;
|
||
}
|
||
|
||
static int
|
||
sunos4_core_file_failing_signal (bfd *abfd)
|
||
{
|
||
return core_hdr (abfd)->hdr->c_signo;
|
||
}
|
||
|
||
static bfd_boolean
|
||
sunos4_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd)
|
||
{
|
||
if (core_bfd->xvec != exec_bfd->xvec)
|
||
{
|
||
bfd_set_error (bfd_error_system_call);
|
||
return FALSE;
|
||
}
|
||
|
||
/* Solaris core files do not include an aouthdr. */
|
||
if ((core_hdr (core_bfd)->hdr)->c_len == SOLARIS_BCP_CORE_LEN)
|
||
return TRUE;
|
||
|
||
return memcmp ((char *) &((core_hdr (core_bfd)->hdr)->c_aouthdr),
|
||
(char *) exec_hdr (exec_bfd),
|
||
sizeof (struct internal_exec)) == 0;
|
||
}
|
||
|
||
#define MY_set_sizes sunos4_set_sizes
|
||
|
||
static bfd_boolean
|
||
sunos4_set_sizes (bfd *abfd)
|
||
{
|
||
switch (bfd_get_arch (abfd))
|
||
{
|
||
default:
|
||
return FALSE;
|
||
case bfd_arch_sparc:
|
||
adata (abfd).page_size = 0x2000;
|
||
adata (abfd).segment_size = 0x2000;
|
||
adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
|
||
return TRUE;
|
||
case bfd_arch_m68k:
|
||
adata (abfd).page_size = 0x2000;
|
||
adata (abfd).segment_size = 0x20000;
|
||
adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
|
||
return TRUE;
|
||
}
|
||
}
|
||
|
||
/* We default to setting the toolversion field to 1, as is required by
|
||
SunOS. */
|
||
#ifndef MY_exec_hdr_flags
|
||
#define MY_exec_hdr_flags 1
|
||
#endif
|
||
|
||
#ifndef MY_entry_is_text_address
|
||
#define MY_entry_is_text_address 0
|
||
#endif
|
||
#ifndef MY_add_dynamic_symbols
|
||
#define MY_add_dynamic_symbols 0
|
||
#endif
|
||
#ifndef MY_add_one_symbol
|
||
#define MY_add_one_symbol 0
|
||
#endif
|
||
#ifndef MY_link_dynamic_object
|
||
#define MY_link_dynamic_object 0
|
||
#endif
|
||
#ifndef MY_write_dynamic_symbol
|
||
#define MY_write_dynamic_symbol 0
|
||
#endif
|
||
#ifndef MY_check_dynamic_reloc
|
||
#define MY_check_dynamic_reloc 0
|
||
#endif
|
||
#ifndef MY_finish_dynamic_link
|
||
#define MY_finish_dynamic_link 0
|
||
#endif
|
||
|
||
static const struct aout_backend_data sunos4_aout_backend =
|
||
{
|
||
0, /* Zmagic files are not contiguous. */
|
||
1, /* Text includes header. */
|
||
MY_entry_is_text_address,
|
||
MY_exec_hdr_flags,
|
||
0, /* Default text vma. */
|
||
sunos4_set_sizes,
|
||
0, /* Header is counted in zmagic text. */
|
||
MY_add_dynamic_symbols,
|
||
MY_add_one_symbol,
|
||
MY_link_dynamic_object,
|
||
MY_write_dynamic_symbol,
|
||
MY_check_dynamic_reloc,
|
||
MY_finish_dynamic_link
|
||
};
|
||
|
||
#define MY_core_file_failing_command sunos4_core_file_failing_command
|
||
#define MY_core_file_failing_signal sunos4_core_file_failing_signal
|
||
#define MY_core_file_matches_executable_p sunos4_core_file_matches_executable_p
|
||
|
||
#define MY_bfd_debug_info_start bfd_void
|
||
#define MY_bfd_debug_info_end bfd_void
|
||
#define MY_bfd_debug_info_accumulate (void (*) (bfd *, struct bfd_section *)) bfd_void
|
||
#define MY_core_file_p sunos4_core_file_p
|
||
#define MY_write_object_contents NAME(aout, sunos4_write_object_contents)
|
||
#define MY_backend_data & sunos4_aout_backend
|
||
|
||
#ifndef TARGET_IS_LITTLE_ENDIAN_P
|
||
#define TARGET_IS_BIG_ENDIAN_P
|
||
#endif
|
||
|
||
#include "aout-target.h"
|