593 lines
18 KiB
Objective-C
593 lines
18 KiB
Objective-C
/* A.out "format 1" file handling code
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Copyright (C) 1990-1991 Free Software Foundation, Inc.
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Written by Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "aout/sun4.h"
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#include "libaout.h" /* BFD a.out internal data structures */
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#include "aout/aout64.h"
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#include "aout/stab_gnu.h"
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#include "aout/ar.h"
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/*
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The file @code{aoutf1.h} contains the code for BFD's
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a.out back end. Control over the generated back end is given by these
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two preprocessor names:
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@table @code
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@item ARCH_SIZE
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This value should be either 32 or 64, depending upon the size of an
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int in the target format. It changes the sizes of the structs which
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perform the memory/disk mapping of structures.
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The 64 bit backend may only be used if the host compiler supports 64
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ints (eg long long with gcc), by defining the name @code{HOST_64_BIT} in @code{bfd.h}.
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With this name defined, @emph{all} bfd operations are performed with 64bit
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arithmetic, not just those to a 64bit target.
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@item TARGETNAME
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The name put into the target vector.
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@item
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@end table
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*/
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void (*bfd_error_trap)();
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/*SUPPRESS558*/
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/*SUPPRESS529*/
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void
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DEFUN(NAME(sunos,set_arch_mach), (abfd, machtype),
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bfd *abfd AND int machtype)
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{
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/* Determine the architecture and machine type of the object file. */
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enum bfd_architecture arch;
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long machine;
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switch (machtype) {
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case M_UNKNOWN:
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/* Some Sun3s make magic numbers without cpu types in them, so
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we'll default to the 68020. */
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arch = bfd_arch_m68k;
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machine = 68020;
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break;
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case M_68010:
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case M_HP200:
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arch = bfd_arch_m68k;
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machine = 68010;
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break;
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case M_68020:
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case M_HP300:
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arch = bfd_arch_m68k;
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machine = 68020;
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break;
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case M_SPARC:
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arch = bfd_arch_sparc;
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machine = 0;
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break;
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case M_386:
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arch = bfd_arch_i386;
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machine = 0;
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break;
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case M_29K:
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arch = bfd_arch_a29k;
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machine = 0;
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break;
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case M_HPUX:
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arch = bfd_arch_m68k;
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machine = 0;
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break;
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default:
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arch = bfd_arch_obscure;
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machine = 0;
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break;
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}
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bfd_set_arch_mach(abfd, arch, machine);
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}
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#define SET_ARCH_MACH(ABFD, EXEC) \
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NAME(sunos,set_arch_mach)(ABFD, N_MACHTYPE (EXEC)); \
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choose_reloc_size(ABFD);
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/* Determine the size of a relocation entry, based on the architecture */
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static void
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DEFUN(choose_reloc_size,(abfd),
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bfd *abfd)
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{
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switch (bfd_get_arch(abfd)) {
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case bfd_arch_sparc:
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case bfd_arch_a29k:
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obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
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break;
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default:
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obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
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break;
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}
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}
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/* Write an object file in SunOS format.
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Section contents have already been written. We write the
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file header, symbols, and relocation. */
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static boolean
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DEFUN(NAME(aout,sunos4_write_object_contents),
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(abfd),
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bfd *abfd)
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{
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struct external_exec exec_bytes;
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struct internal_exec *execp = exec_hdr (abfd);
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/* Magic number, maestro, please! */
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switch (bfd_get_arch(abfd)) {
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case bfd_arch_m68k:
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switch (bfd_get_mach(abfd)) {
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case 68010:
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N_SET_MACHTYPE(*execp, M_68010);
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break;
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default:
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case 68020:
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N_SET_MACHTYPE(*execp, M_68020);
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break;
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}
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break;
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case bfd_arch_sparc:
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N_SET_MACHTYPE(*execp, M_SPARC);
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break;
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case bfd_arch_i386:
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N_SET_MACHTYPE(*execp, M_386);
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break;
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case bfd_arch_a29k:
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N_SET_MACHTYPE(*execp, M_29K);
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break;
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default:
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N_SET_MACHTYPE(*execp, M_UNKNOWN);
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}
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choose_reloc_size(abfd);
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/* FIXME */
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N_SET_FLAGS (*execp, 0x1);
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WRITE_HEADERS(abfd, execp);
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return true;
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}
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/* core files */
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#define CORE_MAGIC 0x080456
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#define CORE_NAMELEN 16
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/* The core structure is taken from the Sun documentation.
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Unfortunately, they don't document the FPA structure, or at least I
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can't find it easily. Fortunately the core header contains its own
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length. So this shouldn't cause problems, except for c_ucode, which
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so far we don't use but is easy to find with a little arithmetic. */
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/* But the reg structure can be gotten from the SPARC processor handbook.
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This really should be in a GNU include file though so that gdb can use
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the same info. */
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struct regs {
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int r_psr;
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int r_pc;
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int r_npc;
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int r_y;
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int r_g1;
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int r_g2;
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int r_g3;
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int r_g4;
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int r_g5;
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int r_g6;
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int r_g7;
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int r_o0;
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int r_o1;
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int r_o2;
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int r_o3;
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int r_o4;
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int r_o5;
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int r_o6;
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int r_o7;
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};
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/* Taken from Sun documentation: */
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/* FIXME: It's worse than we expect. This struct contains TWO substructs
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neither of whose size we know, WITH STUFF IN BETWEEN THEM! We can't
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even portably access the stuff in between! */
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struct external_sparc_core {
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int c_magic; /* Corefile magic number */
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int c_len; /* Sizeof (struct core) */
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#define SPARC_CORE_LEN 432
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int c_regs[19]; /* General purpose registers -- MACHDEP SIZE */
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struct external_exec c_aouthdr; /* A.out header */
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int c_signo; /* Killing signal, if any */
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int c_tsize; /* Text size (bytes) */
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int c_dsize; /* Data size (bytes) */
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int c_ssize; /* Stack size (bytes) */
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char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
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double fp_stuff[1]; /* external FPU state (size unknown by us) */
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/* The type "double" is critical here, for alignment.
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SunOS declares a struct here, but the struct's alignment
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is double since it contains doubles. */
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int c_ucode; /* Exception no. from u_code */
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/* (this member is not accessible by name since we don't
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portably know the size of fp_stuff.) */
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};
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struct external_sun3_core {
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int c_magic; /* Corefile magic number */
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int c_len; /* Sizeof (struct core) */
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#define SUN3_CORE_LEN 826 /* As of SunOS 4.1.1 */
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int c_regs[18]; /* General purpose registers -- MACHDEP SIZE */
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struct external_exec c_aouthdr; /* A.out header */
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int c_signo; /* Killing signal, if any */
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int c_tsize; /* Text size (bytes) */
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int c_dsize; /* Data size (bytes) */
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int c_ssize; /* Stack size (bytes) */
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char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
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double fp_stuff[1]; /* external FPU state (size unknown by us) */
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/* The type "double" is critical here, for alignment.
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SunOS declares a struct here, but the struct's alignment
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is double since it contains doubles. */
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int c_ucode; /* Exception no. from u_code */
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/* (this member is not accessible by name since we don't
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portably know the size of fp_stuff.) */
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};
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struct internal_sunos_core {
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int c_magic; /* Corefile magic number */
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int c_len; /* Sizeof (struct core) */
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long c_regs_pos; /* file offset of General purpose registers */
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int c_regs_size; /* size of General purpose registers */
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struct internal_exec c_aouthdr; /* A.out header */
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int c_signo; /* Killing signal, if any */
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int c_tsize; /* Text size (bytes) */
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int c_dsize; /* Data size (bytes) */
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int c_ssize; /* Stack size (bytes) */
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long c_stacktop; /* Stack top (address) */
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char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
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long fp_stuff_pos; /* file offset of external FPU state (regs) */
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int fp_stuff_size; /* Size of it */
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int c_ucode; /* Exception no. from u_code */
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};
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/* byte-swap in the Sun-3 core structure */
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static void
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DEFUN(swapcore_sun3,(abfd, ext, intcore),
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bfd *abfd AND
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char *ext AND
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struct internal_sunos_core *intcore)
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{
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struct external_sun3_core *extcore = (struct external_sun3_core *)ext;
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intcore->c_magic = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_magic);
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intcore->c_len = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_len );
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intcore->c_regs_pos = (long) (((struct external_sun3_core *)0)->c_regs);
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intcore->c_regs_size = sizeof (extcore->c_regs);
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NAME(aout,swap_exec_header_in)(abfd, &extcore->c_aouthdr,&intcore->c_aouthdr);
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intcore->c_signo = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_signo);
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intcore->c_tsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_tsize);
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intcore->c_dsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_dsize);
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intcore->c_ssize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_ssize);
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memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname));
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intcore->fp_stuff_pos = (long) (((struct external_sun3_core *)0)->fp_stuff);
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/* FP stuff takes up whole rest of struct, except c_ucode. */
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intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
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(file_ptr)(((struct external_sun3_core *)0)->fp_stuff);
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/* Ucode is the last thing in the struct -- just before the end */
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intcore->c_ucode =
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bfd_h_get_32 (abfd,
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intcore->c_len - sizeof (extcore->c_ucode) + (unsigned char *)extcore);
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intcore->c_stacktop = 0x0E000000; /* By experimentation */
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}
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/* byte-swap in the Sparc core structure */
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static void
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DEFUN(swapcore_sparc,(abfd, ext, intcore),
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bfd *abfd AND
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char *ext AND
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struct internal_sunos_core *intcore)
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{
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struct external_sparc_core *extcore = (struct external_sparc_core *)ext;
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intcore->c_magic = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_magic);
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intcore->c_len = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_len );
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intcore->c_regs_pos = (long) (((struct external_sparc_core *)0)->c_regs);
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intcore->c_regs_size = sizeof (extcore->c_regs);
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NAME(aout,swap_exec_header_in)(abfd, &extcore->c_aouthdr,&intcore->c_aouthdr);
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intcore->c_signo = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_signo);
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intcore->c_tsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_tsize);
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intcore->c_dsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_dsize);
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intcore->c_ssize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_ssize);
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memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname));
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intcore->fp_stuff_pos = (long) (((struct external_sparc_core *)0)->fp_stuff);
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/* FP stuff takes up whole rest of struct, except c_ucode. */
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intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
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(file_ptr)(((struct external_sparc_core *)0)->fp_stuff);
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/* Ucode is the last thing in the struct -- just before the end */
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intcore->c_ucode =
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bfd_h_get_32 (abfd,
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intcore->c_len - sizeof (extcore->c_ucode) + (unsigned char *)extcore);
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/* Supposedly the user stack grows downward from the bottom of kernel memory.
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Presuming that this remains true, this definition will work. */
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#define SPARC_USRSTACK (-(128*1024*1024))
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intcore->c_stacktop = SPARC_USRSTACK; /* By experimentation */
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}
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/* need this cast because ptr is really void * */
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#define core_hdr(bfd) ((bfd)->tdata.sun_core_data)
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#define core_datasec(bfd) (core_hdr(bfd)->data_section)
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#define core_stacksec(bfd) (core_hdr(bfd)->stack_section)
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#define core_regsec(bfd) (core_hdr(bfd)->reg_section)
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#define core_reg2sec(bfd) (core_hdr(bfd)->reg2_section)
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/* These are stored in the bfd's tdata */
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struct sun_core_struct {
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struct internal_sunos_core *hdr; /* core file header */
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asection *data_section;
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asection *stack_section;
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asection *reg_section;
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asection *reg2_section;
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};
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static bfd_target *
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DEFUN(sunos4_core_file_p,(abfd),
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bfd *abfd)
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{
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unsigned char longbuf[4]; /* Raw bytes of various header fields */
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int core_size;
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int core_mag;
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struct internal_sunos_core *core;
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char *extcore;
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struct mergem {
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struct sun_core_struct suncoredata;
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struct internal_sunos_core internal_sunos_core;
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char external_core[1];
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} *mergem;
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bfd_error = system_call_error;
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if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
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sizeof (longbuf))
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return 0;
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core_mag = bfd_h_get_32 (abfd, longbuf);
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if (core_mag != CORE_MAGIC) return 0;
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/* SunOS core headers can vary in length; second word is size; */
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if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
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sizeof (longbuf))
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return 0;
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core_size = bfd_h_get_32 (abfd, longbuf);
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/* Sanity check */
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if (core_size > 20000)
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return 0;
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if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) < 0) return 0;
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mergem = (struct mergem *)bfd_zalloc (abfd, core_size + sizeof (struct mergem));
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if (mergem == NULL) {
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bfd_error = no_memory;
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return 0;
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}
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extcore = mergem->external_core;
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if ((bfd_read ((PTR) extcore, 1, core_size, abfd)) != core_size) {
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bfd_error = system_call_error;
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bfd_release (abfd, (char *)mergem);
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return 0;
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}
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/* Validate that it's a core file we know how to handle, due to sun
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botching the positioning of registers and other fields in a machine
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dependent way. */
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core = &mergem->internal_sunos_core;
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switch (core_size) {
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case SPARC_CORE_LEN:
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swapcore_sparc (abfd, extcore, core);
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break;
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case SUN3_CORE_LEN:
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swapcore_sun3 (abfd, extcore, core);
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break;
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default:
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bfd_error = system_call_error; /* FIXME */
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bfd_release (abfd, (char *)mergem);
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return 0;
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}
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abfd->tdata.sun_core_data = &mergem->suncoredata;
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abfd->tdata.sun_core_data->hdr = core;
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/* create the sections. This is raunchy, but bfd_close wants to reclaim
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them */
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core_stacksec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
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if (core_stacksec (abfd) == NULL) {
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loser:
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bfd_error = no_memory;
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bfd_release (abfd, (char *)mergem);
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return 0;
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}
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core_datasec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
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if (core_datasec (abfd) == NULL) {
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loser1:
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bfd_release (abfd, core_stacksec (abfd));
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goto loser;
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}
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core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
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if (core_regsec (abfd) == NULL) {
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loser2:
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bfd_release (abfd, core_datasec (abfd));
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goto loser1;
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}
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core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
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if (core_reg2sec (abfd) == NULL) {
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bfd_release (abfd, core_regsec (abfd));
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goto loser2;
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}
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core_stacksec (abfd)->name = ".stack";
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core_datasec (abfd)->name = ".data";
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core_regsec (abfd)->name = ".reg";
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core_reg2sec (abfd)->name = ".reg2";
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core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
|
||
core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
|
||
core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
|
||
core_reg2sec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
|
||
|
||
core_stacksec (abfd)->_raw_size = core->c_ssize;
|
||
core_datasec (abfd)->_raw_size = core->c_dsize;
|
||
core_regsec (abfd)->_raw_size = core->c_regs_size;
|
||
core_reg2sec (abfd)->_raw_size = core->fp_stuff_size;
|
||
|
||
core_stacksec (abfd)->vma = (core->c_stacktop - core->c_ssize);
|
||
core_datasec (abfd)->vma = N_DATADDR(core->c_aouthdr);
|
||
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;
|
||
|
||
abfd->sections = core_stacksec (abfd);
|
||
core_stacksec (abfd)->next = core_datasec (abfd);
|
||
core_datasec (abfd)->next = core_regsec (abfd);
|
||
core_regsec (abfd)->next = core_reg2sec (abfd);
|
||
|
||
abfd->section_count = 4;
|
||
|
||
return abfd->xvec;
|
||
}
|
||
|
||
static char *sunos4_core_file_failing_command (abfd)
|
||
bfd *abfd;
|
||
{
|
||
return core_hdr (abfd)->hdr->c_cmdname;
|
||
}
|
||
|
||
static int
|
||
DEFUN(sunos4_core_file_failing_signal,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
return core_hdr (abfd)->hdr->c_signo;
|
||
}
|
||
|
||
static boolean
|
||
DEFUN(sunos4_core_file_matches_executable_p, (core_bfd, exec_bfd),
|
||
bfd *core_bfd AND
|
||
bfd *exec_bfd)
|
||
{
|
||
if (core_bfd->xvec != exec_bfd->xvec) {
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
return (memcmp ((char *)&((core_hdr (core_bfd)->hdr)->c_aouthdr),
|
||
(char *) exec_hdr (exec_bfd),
|
||
sizeof (struct internal_exec)) == 0) ? true : false;
|
||
}
|
||
|
||
extern reloc_howto_type aout_32_ext_howto_table[];
|
||
|
||
static reloc_howto_type *
|
||
DEFUN (sunos4_reloc_type_lookup, (abfd, code),
|
||
bfd *abfd AND
|
||
bfd_reloc_code_real_type code)
|
||
{
|
||
switch (bfd_get_arch (abfd))
|
||
{
|
||
default:
|
||
return 0;
|
||
case bfd_arch_sparc:
|
||
switch (code)
|
||
{
|
||
default:
|
||
return 0;
|
||
#define IDX(i,j) case i: return &aout_32_ext_howto_table[j]
|
||
IDX (BFD_RELOC_CTOR, 2);
|
||
IDX (BFD_RELOC_32, 2);
|
||
IDX (BFD_RELOC_HI22, 8);
|
||
IDX (BFD_RELOC_LO10, 11);
|
||
IDX (BFD_RELOC_32_PCREL_S2, 6);
|
||
}
|
||
}
|
||
}
|
||
|
||
static boolean
|
||
DEFUN (sunos4_set_sizes, (abfd),
|
||
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;
|
||
}
|
||
}
|
||
|
||
static CONST struct aout_backend_data sunos4_aout_backend = {
|
||
0, 1, 0, sunos4_set_sizes, 0,
|
||
};
|
||
|
||
#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 (PROTO(void,(*),(bfd*, struct sec *))) 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
|
||
|
||
#define TARGET_IS_BIG_ENDIAN_P
|
||
|
||
#include "aout-target.h"
|