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binutils-gdb/bfd/aout.c
Steve Chamberlain c93595dd1c Added sun3 support
1991-04-03 22:06:25 +00:00

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/*** bfd backend for sunos binaries */
/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Diddler.
BFD 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 1, or (at your option)
any later version.
BFD 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 BFD; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* $Id$
*
*/
#define TARGET_BYTE_ORDER_BIG_P 1
#include <ansidecl.h>
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
void (*bfd_error_trap)();
/*SUPPRESS558*/
/*SUPPRESS529*/
typedef void generic_symbol_type;
/* These values are correct for the SPARC. I dunno about anything else */
#define PAGE_SIZE 0x02000
#define SEGMENT_SIZE PAGE_SIZE
#define TEXT_START_ADDR PAGE_SIZE
#include "a.out.gnu.h"
#include "stab.gnu.h"
#include "ar.h"
#include "liba.out.h" /* BFD a.out internal data structures */
#include "a.out.sun4.h"
#define CTOR_TABLE_RELOC_IDX 2
static CONST reloc_howto_type howto_table_ext[] =
{
/* type rs size bsz pcrel bitpos abs ovrf sf name partial inplace mask*/
{ (unsigned int) RELOC_8, 0, 0, 8, false, 0, true, true,0,"8", false, 0x000000ff},
{ (unsigned int) RELOC_16, 0, 1, 16, false, 0, true, true,0,"16", false, 0x0000ffff},
{ (unsigned int) RELOC_32, 0, 2, 32, false, 0, true, true,0,"32", false, 0xffffffff},
{ (unsigned int) RELOC_DISP8, 0, 0, 8, true, 0, false, true,0,"DISP8", false, 0x000000ff},
{ (unsigned int) RELOC_DISP16, 0, 1, 16, true, 0, false, true,0,"DISP16", false, 0x0000ffff},
{ (unsigned int) RELOC_DISP32, 0, 2, 32, true, 0, false, true,0,"DISP32", false, 0xffffffff},
{ (unsigned int) RELOC_WDISP30,2, 2, 30, true, 0, false, true,0,"WDISP30", false, 0x3fffffff},
{ (unsigned int) RELOC_WDISP22,2, 2, 22, true, 0, false, true,0,"WDISP22", false, 0x003fffff},
{ (unsigned int) RELOC_HI22, 10, 2, 22, false, 0, false, true,0,"HI22", false, 0x003fffff},
{ (unsigned int) RELOC_22, 0, 2, 22, false, 0, false, true,0,"22", false, 0x003fffff},
{ (unsigned int) RELOC_13, 0, 2, 13, false, 0, false, true,0,"13", false, 0x00001fff},
{ (unsigned int) RELOC_LO10, 0, 2, 10, false, 0, false, true,0,"LO10", false, 0x000003ff},
{ (unsigned int) RELOC_SFA_BASE,0, 2, 32, false, 0, false, true,0,"SFA_BASE", false, 0xffffffff},
{ (unsigned int) RELOC_SFA_OFF13,0,2, 32, false, 0, false, true,0,"SFA_OFF13",false, 0xffffffff},
{ (unsigned int) RELOC_BASE10, 0, 2, 16, false, 0, false, true,0,"BASE10", false, 0x0000ffff},
{ (unsigned int) RELOC_BASE13, 0, 2, 13, false, 0, false, true,0,"BASE13", false, 0x00001fff},
{ (unsigned int) RELOC_BASE22, 0, 2, 0, false, 0, false, true,0,"BASE22", false, 0x00000000},
{ (unsigned int) RELOC_PC10, 0, 2, 10, false, 0, false, true,0,"PC10", false, 0x000003ff},
{ (unsigned int) RELOC_PC22, 0, 2, 22, false, 0, false, true,0,"PC22", false, 0x003fffff},
{ (unsigned int) RELOC_JMP_TBL,0, 2, 32, false, 0, false, true,0,"JMP_TBL", false, 0xffffffff},
{ (unsigned int) RELOC_SEGOFF16,0, 2, 0, false, 0, false, true,0,"SEGOFF16", false, 0x00000000},
{ (unsigned int) RELOC_GLOB_DAT,0, 2, 0, false, 0, false, true,0,"GLOB_DAT", false, 0x00000000},
{ (unsigned int) RELOC_JMP_SLOT,0, 2, 0, false, 0, false, true,0,"JMP_SLOT", false, 0x00000000},
{ (unsigned int) RELOC_RELATIVE,0, 2, 0, false, 0, false, true,0,"RELATIVE", false, 0x00000000},
{ (unsigned int) RELOC_JUMPTARG,2, 13, 16, true, 0, false, true,0,"JUMPTARG", false, 0x0000ffff},
{ (unsigned int) RELOC_CONST, 0, 13, 16, false, 0, false, true,0,"CONST", false, 0x0000ffff},
{ (unsigned int) RELOC_CONSTH, 16, 13, 16, false, 0, false, true,0,"CONSTH", false, 0x0000ffff},
};
/* Convert standard reloc records to "arelent" format (incl byte swap). */
static CONST reloc_howto_type howto_table_std[] = {
/* type rs size bsz pcrel bitpos abs ovrf sf name*/
{ (unsigned int) 0, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff},
{ (unsigned int) 1, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff},
{ (unsigned int) 2, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff},
{ (unsigned int) 3, 0, 3, 64, false, 0, true, true,0,"64", true, 0xdeaddead},
{ (unsigned int) 4, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff},
{ (unsigned int) 5, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff},
{ (unsigned int) 6, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff},
{ (unsigned int) 7, 0, 3, 64, true, 0, false, true,0,"DISP64", true, 0xfeedface},
};
/** a.out files */
PROTO (void , sunos4_write_syms, ());
PROTO (static boolean,sunos4_squirt_out_relocs,(bfd *abfd, asection *section));
static size_t
reloc_size_func(abfd)
bfd *abfd;
{
switch (bfd_get_architecture (abfd)) {
case bfd_arch_sparc:
case bfd_arch_a29k:
return RELOC_EXT_SIZE;
default:
return RELOC_STD_SIZE;
}
}
void
bfd_aout_swap_exec_header_in (abfd, raw_bytes, execp)
bfd *abfd;
unsigned char *raw_bytes;
struct exec *execp;
{
struct exec_bytes *bytes = (struct exec_bytes *)raw_bytes;
/* Now fill in fields in the execp, from the bytes in the raw data. */
execp->a_info = bfd_h_getlong (abfd, bytes->a_info);
execp->a_text = bfd_h_getlong (abfd, bytes->a_text);
execp->a_data = bfd_h_getlong (abfd, bytes->a_data);
execp->a_bss = bfd_h_getlong (abfd, bytes->a_bss);
execp->a_syms = bfd_h_getlong (abfd, bytes->a_syms);
execp->a_entry = bfd_h_getlong (abfd, bytes->a_entry);
execp->a_trsize = bfd_h_getlong (abfd, bytes->a_trsize);
execp->a_drsize = bfd_h_getlong (abfd, bytes->a_drsize);
}
void
bfd_aout_swap_exec_header_out (abfd, execp, raw_bytes)
bfd *abfd;
struct exec *execp;
unsigned char *raw_bytes;
{
struct exec_bytes *bytes = (struct exec_bytes *)raw_bytes;
/* Now fill in fields in the raw data, from the fields in the exec struct. */
bfd_h_putlong (abfd, execp->a_info , bytes->a_info);
bfd_h_putlong (abfd, execp->a_text , bytes->a_text);
bfd_h_putlong (abfd, execp->a_data , bytes->a_data);
bfd_h_putlong (abfd, execp->a_bss , bytes->a_bss);
bfd_h_putlong (abfd, execp->a_syms , bytes->a_syms);
bfd_h_putlong (abfd, execp->a_entry , bytes->a_entry);
bfd_h_putlong (abfd, execp->a_trsize, bytes->a_trsize);
bfd_h_putlong (abfd, execp->a_drsize, bytes->a_drsize);
}
/* Steve wants some way to frob this stuff from Saber while he's debugging
ld, so we have these funny shadow functions */
/* ZMAGIC's start at 0 (making the exec part of the text section),
other formats start after the exec
*/
static unsigned int n_txtoff(ptr)
struct exec *ptr;
{return N_MAGIC(*ptr)== ZMAGIC ? 0: sizeof(struct exec);}
static unsigned int n_datoff(ptr)
struct exec *ptr;
{return n_txtoff(ptr) + ptr->a_text;}
static unsigned int n_treloff(ptr)
struct exec *ptr;
{return n_datoff(ptr) + ptr->a_data;}
static unsigned int n_dreloff(ptr)
struct exec *ptr;
{return n_treloff(ptr) + ptr->a_trsize;}
static unsigned int n_symoff(ptr)
struct exec *ptr;
{return n_dreloff(ptr) + ptr->a_drsize;}
static unsigned int n_stroff(ptr)
struct exec *ptr;
{return n_symoff(ptr) + ptr->a_syms;}
unsigned int n_badmag(ptr)
struct exec *ptr;
{
switch (N_MAGIC(*ptr)) {
case OMAGIC: case NMAGIC: case ZMAGIC: return 0;
default: return 1;
}
}
bfd_target *
sunos4_object_p (abfd)
bfd *abfd;
{
unsigned char magicbuf[4]; /* Raw bytes of magic number from file */
unsigned long magic; /* Swapped magic number */
unsigned char exec_bytes[EXEC_BYTES_SIZE]; /* Raw bytes of exec hdr */
struct exec *execp;
void *rawptr;
bfd_error = system_call_error;
if (bfd_read ((void *)magicbuf, 1, sizeof (magicbuf), abfd) !=
sizeof (magicbuf))
return 0;
magic = bfd_h_getlong (abfd, magicbuf);
/* Baroque syntax to mask deficiencies of the Sun compiler */
/* if (N_BADMAG (*((struct exec *) &magic))) return 0; */
if (n_badmag ((struct exec *) &magic)) return 0;
if (bfd_seek (abfd, 0L, false) < 0) return 0;
if (bfd_read ((void *) exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
!= EXEC_BYTES_SIZE) {
bfd_error = wrong_format;
return 0;
}
/* Use an intermediate variable for clarity */
rawptr = (void *) zalloc (sizeof (struct sunexdata) + sizeof (struct exec));
if (rawptr == NULL) {
bfd_error = no_memory;
return 0;
}
set_tdata (abfd, ((struct sunexdata *) rawptr));
exec_hdr (abfd) = execp =
(struct exec *) ((char *)rawptr + sizeof (struct sunexdata));
bfd_aout_swap_exec_header_in (abfd, exec_bytes, execp);
/* Set the file flags */
abfd->flags = NO_FLAGS;
if (execp->a_drsize || execp->a_trsize)
abfd->flags |= HAS_RELOC;
if (execp->a_entry)
abfd->flags |= EXEC_P;
if (execp->a_syms)
abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
if (N_MAGIC (*execp) == ZMAGIC) abfd->flags |= D_PAGED;
if (N_MAGIC (*execp) == NMAGIC) abfd->flags |= WP_TEXT;
/* Determine the architecture and machine type of the object file. */
abfd->obj_arch = bfd_arch_unknown; /* Default values */
abfd->obj_machine = 0;
switch (N_MACHTYPE (*execp)) {
case M_UNKNOWN:
break;
case M_68010:
abfd->obj_arch = bfd_arch_m68k;
abfd->obj_machine = 68010;
break;
case M_68020:
abfd->obj_arch = bfd_arch_m68k;
abfd->obj_machine = 68020;
break;
case M_SPARC:
abfd->obj_arch = bfd_arch_sparc;
break;
case M_386:
abfd->obj_arch = bfd_arch_i386;
break;
case M_29K:
abfd->obj_arch = bfd_arch_a29k;
break;
default:
abfd->obj_arch = bfd_arch_obscure;
break;
}
bfd_get_start_address (abfd) = execp->a_entry;
/* Remember the positions of the string table and symbol table. */
obj_str_filepos (abfd) = n_stroff (execp);
obj_sym_filepos (abfd) = n_symoff (execp);
/* create the sections. This is raunchy, but bfd_close wants to reclaim
them */
obj_textsec (abfd) = (asection *)NULL;
obj_datasec (abfd) = (asection *)NULL;
obj_bsssec (abfd) = (asection *)NULL;
obj_aout_symbols(abfd) = (aout_symbol_type *)NULL;
(void)bfd_make_section(abfd, ".text");
(void)bfd_make_section(abfd, ".data");
(void)bfd_make_section(abfd, ".bss");
obj_datasec (abfd)->size = execp->a_data;
obj_bsssec (abfd)->size = execp->a_bss;
obj_textsec (abfd)->size = execp->a_text;
obj_datasec (abfd)->vma = N_DATADDR(*execp);
obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
obj_textsec (abfd)->vma = N_TXTADDR(*execp);
obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
obj_datasec (abfd)->filepos = N_DATOFF(*execp);
obj_textsec (abfd)->rel_filepos = N_TROFF(*execp);
obj_datasec (abfd)->rel_filepos = N_DROFF(*execp);
obj_textsec (abfd)->flags = (execp->a_trsize != 0 ?
(SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) :
(SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS));
obj_datasec (abfd)->flags = (execp->a_drsize != 0 ?
(SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) :
(SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS));
obj_bsssec (abfd)->flags = SEC_ALLOC;
abfd->sections = obj_textsec (abfd);
obj_textsec (abfd)->next = obj_datasec (abfd);
obj_datasec (abfd)->next = obj_bsssec (abfd);
return abfd->xvec;
}
boolean
sunos4_mkobject (abfd)
bfd *abfd;
{
char *rawptr;
bfd_error = system_call_error;
/* Use an intermediate variable for clarity */
rawptr = zalloc (sizeof (struct sunexdata) + sizeof (struct exec));
if (rawptr == NULL) {
bfd_error = no_memory;
return false;
}
abfd->tdata = (void *)((struct sunexdata *) rawptr);
exec_hdr (abfd) = (struct exec *) (rawptr + sizeof (struct sunexdata));
/* For simplicity's sake we just make all the sections right here. */
obj_textsec (abfd) = (asection *)NULL;
obj_datasec (abfd) = (asection *)NULL;
obj_bsssec (abfd) = (asection *)NULL;
bfd_make_section (abfd, ".text");
bfd_make_section (abfd, ".data");
bfd_make_section (abfd, ".bss");
return true;
}
/* Keep track of machine architecture and machine type for a.out's.
Return the machine_type for a particular arch&machine, or M_UNKNOWN
if that exact arch&machine can't be represented in a.out format.
If the architecture is understood, machine type 0 (default) should
always be understood. */
static enum machine_type
aout_machine_type (arch, machine)
enum bfd_architecture arch;
unsigned long machine;
{
enum machine_type arch_flags;
arch_flags = M_UNKNOWN;
switch (arch) {
case bfd_arch_sparc:
if (machine == 0) arch_flags = M_SPARC;
break;
case bfd_arch_m68k:
switch (machine) {
case 0: arch_flags = M_UNKNOWN; break;
case 68000: arch_flags = M_UNKNOWN; break;
case 68010: arch_flags = M_68010; break;
case 68020: arch_flags = M_68020; break;
default: arch_flags = M_UNKNOWN; break;
}
break;
case bfd_arch_i386:
if (machine == 0) arch_flags = M_386;
break;
case bfd_arch_a29k:
if (machine == 0) arch_flags = M_29K;
break;
default:
arch_flags = M_UNKNOWN;
break;
}
return arch_flags;
}
boolean
sunos4_set_arch_mach (abfd, arch, machine)
bfd *abfd;
enum bfd_architecture arch;
unsigned long machine;
{
abfd->obj_arch = arch;
abfd->obj_machine = machine;
if (arch != bfd_arch_unknown &&
aout_machine_type (arch, machine) == M_UNKNOWN)
return false; /* We can't represent this type */
return true; /* We're easy ... */
}
boolean
sunos4_write_object_contents (abfd)
bfd *abfd;
{
unsigned int data_pad = 0;
unsigned char exec_bytes[EXEC_BYTES_SIZE];
struct exec *execp = exec_hdr (abfd);
execp->a_text = obj_textsec (abfd)->size;
/* Magic number, maestro, please! */
switch (bfd_get_architecture(abfd)) {
case bfd_arch_m68k:
switch (bfd_get_machine(abfd)) {
case 68010:
N_SET_MACHTYPE(*execp, M_68010);
break;
default:
case 68020:
N_SET_MACHTYPE(*execp, M_68020);
break;
}
break;
case bfd_arch_sparc:
N_SET_MACHTYPE(*execp, M_SPARC);
break;
case bfd_arch_i386:
N_SET_MACHTYPE(*execp, M_386);
break;
case bfd_arch_a29k:
N_SET_MACHTYPE(*execp, M_29K);
break;
default:
N_SET_MACHTYPE(*execp, M_UNKNOWN);
}
N_SET_MAGIC (*execp, OMAGIC);
if (abfd->flags & D_PAGED) {
execp->a_text = obj_textsec (abfd)->size + sizeof(struct exec);
N_SET_MAGIC (*execp, ZMAGIC);
} else if (abfd->flags & WP_TEXT) {
N_SET_MAGIC (*execp, NMAGIC);
}
N_SET_FLAGS (*execp, 0x1); /* copied from ld.c; who the hell knows? */
if (abfd->flags & D_PAGED)
{
data_pad = ((obj_datasec(abfd)->size + PAGE_SIZE -1)
& (- PAGE_SIZE)) - obj_datasec(abfd)->size;
if (data_pad > obj_bsssec(abfd)->size)
execp->a_bss = 0;
else
execp->a_bss = obj_bsssec(abfd)->size - data_pad;
execp->a_data = obj_datasec(abfd)->size + data_pad;
}
else {
execp->a_data = obj_datasec (abfd)->size;
execp->a_bss = obj_bsssec (abfd)->size;
}
execp->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
execp->a_entry = bfd_get_start_address (abfd);
execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *
reloc_size_func(abfd));
execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *
reloc_size_func(abfd));
bfd_aout_swap_exec_header_out (abfd, execp, exec_bytes);
bfd_seek (abfd, 0L, false);
bfd_write ((void *) exec_bytes, 1, EXEC_BYTES_SIZE, abfd);
/* Now write out reloc info, followed by syms and strings */
if (bfd_get_symcount (abfd) != 0)
{
bfd_seek (abfd,
(long)(N_SYMOFF(*execp)), false);
sunos4_write_syms (abfd);
bfd_seek (abfd, (long)(N_TROFF(*execp)), false);
if (!sunos4_squirt_out_relocs (abfd, obj_textsec (abfd))) return false;
bfd_seek (abfd, (long)(N_DROFF(*execp)), false);
if (!sunos4_squirt_out_relocs (abfd, obj_datasec (abfd))) return false;
}
return true;
}
/** core files */
/** 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 core {
int c_magic; /* Corefile magic number */
int c_len; /* Sizeof (struct core) */
struct regs c_regs; /* General purpose registers */
struct 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.) */
};
/* Supposedly the user stack grows downward from the bottom of kernel memory.
Presuming that this remains true, this definition will work. */
#define USRSTACK (-(128*1024*1024))
PROTO (static void, swapcore, (bfd *abfd, struct core *core));
/* need this cast b/c ptr is really void * */
#define core_hdr(bfd) (((struct suncordata *) (bfd->tdata))->hdr)
#define core_datasec(bfd) (((struct suncordata *) ((bfd)->tdata))->data_section)
#define core_stacksec(bfd) (((struct suncordata*)((bfd)->tdata))->stack_section)
#define core_regsec(bfd) (((struct suncordata *) ((bfd)->tdata))->reg_section)
#define core_reg2sec(bfd) (((struct suncordata *) ((bfd)->tdata))->reg2_section)
/* These are stored in the bfd's tdata */
struct suncordata {
struct core *hdr; /* core file header */
asection *data_section;
asection *stack_section;
asection *reg_section;
asection *reg2_section;
};
bfd_target *
sunos4_core_file_p (abfd)
bfd *abfd;
{
unsigned char longbuf[4]; /* Raw bytes of various header fields */
int core_size;
int core_mag;
struct core *core;
char *rawptr;
bfd_error = system_call_error;
if (bfd_read ((void *)longbuf, 1, sizeof (longbuf), abfd) !=
sizeof (longbuf))
return 0;
core_mag = bfd_h_getlong (abfd, longbuf);
if (core_mag != CORE_MAGIC) return 0;
/* SunOS core headers can vary in length; second word is size; */
if (bfd_read ((void *)longbuf, 1, sizeof (longbuf), abfd) !=
sizeof (longbuf))
return 0;
core_size = bfd_h_getlong (abfd, longbuf);
/* Sanity check */
if (core_size > 20000)
return 0;
if (bfd_seek (abfd, 0L, false) < 0) return 0;
rawptr = zalloc (core_size + sizeof (struct suncordata));
if (rawptr == NULL) {
bfd_error = no_memory;
return 0;
}
core = (struct core *) (rawptr + sizeof (struct suncordata));
if ((bfd_read ((void *) core, 1, core_size, abfd)) != core_size) {
bfd_error = system_call_error;
free ((void *)rawptr);
return 0;
}
swapcore (abfd, core);
set_tdata (abfd, ((struct suncordata *) rawptr));
core_hdr (abfd) = core;
/* create the sections. This is raunchy, but bfd_close wants to reclaim
them */
core_stacksec (abfd) = (asection *) zalloc (sizeof (asection));
if (core_stacksec (abfd) == NULL) {
loser:
bfd_error = no_memory;
free ((void *)rawptr);
return 0;
}
core_datasec (abfd) = (asection *) zalloc (sizeof (asection));
if (core_datasec (abfd) == NULL) {
loser1:
free ((void *)core_stacksec (abfd));
goto loser;
}
core_regsec (abfd) = (asection *) zalloc (sizeof (asection));
if (core_regsec (abfd) == NULL) {
loser2:
free ((void *)core_datasec (abfd));
goto loser1;
}
core_reg2sec (abfd) = (asection *) zalloc (sizeof (asection));
if (core_reg2sec (abfd) == NULL) {
free ((void *)core_regsec (abfd));
goto loser2;
}
core_stacksec (abfd)->name = ".stack";
core_datasec (abfd)->name = ".data";
core_regsec (abfd)->name = ".reg";
core_reg2sec (abfd)->name = ".reg2";
core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
core_regsec (abfd)->flags = SEC_ALLOC;
core_reg2sec (abfd)->flags = SEC_ALLOC;
core_stacksec (abfd)->size = core->c_ssize;
core_datasec (abfd)->size = core->c_dsize;
core_regsec (abfd)->size = (sizeof core->c_regs);
/* Float regs take up end of struct, except c_ucode. */
core_reg2sec (abfd)->size = core_size - (sizeof core->c_ucode) -
(file_ptr)(((struct core *)0)->fp_stuff);
core_stacksec (abfd)->vma = (USRSTACK - core->c_ssize);
core_datasec (abfd)->vma = N_DATADDR(core->c_aouthdr);
core_regsec (abfd)->vma = -1;
core_reg2sec (abfd)->vma = -1;
core_stacksec (abfd)->filepos = core->c_len + core->c_dsize;
core_datasec (abfd)->filepos = core->c_len;
/* In file header: */
core_regsec (abfd)->filepos = (file_ptr)(&((struct core *)0)->c_regs);
core_reg2sec (abfd)->filepos = (file_ptr)(((struct core *)0)->fp_stuff);
/* 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;
}
char *
sunos4_core_file_failing_command (abfd)
bfd *abfd;
{
return core_hdr (abfd)->c_cmdname;
}
int
sunos4_core_file_failing_signal (abfd)
bfd *abfd;
{
return core_hdr (abfd)->c_signo;
}
boolean
sunos4_core_file_matches_executable_p (core_bfd, exec_bfd)
bfd *core_bfd, *exec_bfd;
{
if (core_bfd->xvec != exec_bfd->xvec) {
bfd_error = system_call_error;
return false;
}
return (bcmp ((char *)&core_hdr (core_bfd), (char*) &exec_hdr (exec_bfd),
sizeof (struct exec)) == 0) ? true : false;
}
/* byte-swap core structure */
/* FIXME, this needs more work to swap IN a core struct from raw bytes */
static void
swapcore (abfd, core)
bfd *abfd;
struct core *core;
{
unsigned char exec_bytes[EXEC_BYTES_SIZE];
core->c_magic = bfd_h_getlong (abfd, (unsigned char *)&core->c_magic);
core->c_len = bfd_h_getlong (abfd, (unsigned char *)&core->c_len );
/* Leave integer registers in target byte order. */
bcopy ((char *)&(core->c_aouthdr), (char *)exec_bytes, EXEC_BYTES_SIZE);
bfd_aout_swap_exec_header_in (abfd, exec_bytes, &core->c_aouthdr);
core->c_signo = bfd_h_getlong (abfd, (unsigned char *)&core->c_signo);
core->c_tsize = bfd_h_getlong (abfd, (unsigned char *)&core->c_tsize);
core->c_dsize = bfd_h_getlong (abfd, (unsigned char *)&core->c_dsize);
core->c_ssize = bfd_h_getlong (abfd, (unsigned char *)&core->c_ssize);
/* Leave FP registers in target byte order. */
/* Leave "c_ucode" unswapped for now, since we can't find it easily. */
}
/** exec and core file sections */
boolean
sunos4_new_section_hook (abfd, newsect)
bfd *abfd;
asection *newsect;
{
/* align to double at least */
newsect->alignment_power = 3;
if (bfd_get_format (abfd) == bfd_object) {
if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) {
obj_textsec(abfd)= newsect;
return true;
}
if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) {
obj_datasec(abfd) = newsect;
return true;
}
if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) {
obj_bsssec(abfd) = newsect;
return true;
}
}
/* We allow more than three sections internally */
return true;
}
boolean
sunos4_set_section_contents (abfd, section, location, offset, count)
bfd *abfd;
sec_ptr section;
unsigned char *location;
file_ptr offset;
int count;
{
if (abfd->output_has_begun == false)
{ /* set by bfd.c handler */
if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL)
/*||
(obj_textsec (abfd)->size == 0) || (obj_datasec (abfd)->size=
0)*/
)
{
bfd_error = invalid_operation;
return false;
}
#if 0
if (abfd->flags & D_PAGED)
{
obj_textsec (abfd)->filepos = sizeof(struct exec);
obj_datasec(abfd)->filepos = obj_textsec (abfd)->size;
}
else
#endif
{
obj_textsec (abfd)->filepos = sizeof(struct exec);
obj_datasec(abfd)->filepos = obj_textsec(abfd)->filepos + obj_textsec (abfd)->size;
}
}
/* regardless, once we know what we're doing, we might as well get going */
bfd_seek (abfd, section->filepos + offset, SEEK_SET);
if (count) {
return (bfd_write ((void *)location, 1, count, abfd) == count) ?
true : false;
}
return false;
}
boolean
sunos4_get_section_contents (abfd, section, location, offset, count)
bfd *abfd;
sec_ptr section;
void *location;
file_ptr offset;
int count;
{
if (count) {
if (offset >= section->size) return false;
bfd_seek (abfd, section->filepos + offset, SEEK_SET);
return (bfd_read (location, 1, count, abfd) == count) ? true:false;
}
else return true;
}
/* Classify stabs symbols */
#define sym_in_text_section(sym) \
(((sym)->n_type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_TEXT)
#define sym_in_data_section(sym) \
(((sym)->n_type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_DATA)
#define sym_in_bss_section(sym) \
(((sym)->n_type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_BSS)
/* Symbol is undefined if type is N_UNDF|N_EXT and if it has
zero in the "value" field. Nonzeroes there are fortrancommon
symbols. */
#define sym_is_undefined(sym) \
((sym)->n_type == (N_UNDF | N_EXT) && (sym)->n_value == 0)
/* Symbol is a global definition if N_EXT is on and if it has
a nonzero type field. */
#define sym_is_global_defn(sym) \
(((sym)->n_type & N_EXT) && (sym)->n_type & N_TYPE)
/* Symbol is debugger info if any bits outside N_TYPE or N_EXT
are on. */
#define sym_is_debugger_info(sym) \
((sym)->n_type & ~(N_EXT | N_TYPE))
#define sym_is_fortrancommon(sym) \
(((sym)->n_type == (N_EXT)) && (sym)->n_value != 0)
/* Symbol is absolute if it has N_ABS set */
#define sym_is_absolute(sym) \
(((sym)->n_type & N_TYPE)== N_ABS)
#define sym_is_indirect(sym) \
(((sym)->n_type & N_ABS)== N_ABS)
/* Only in their own functions for ease of debugging; when sym flags have
stabilised these should be inlined into their (single) caller */
static void
translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd)
struct nlist *sym_pointer;
aout_symbol_type *cache_ptr;
bfd *abfd;
{
switch (cache_ptr->type & N_TYPE) {
case N_SETA:
case N_SETT:
case N_SETD:
case N_SETB:
{
asection *section = bfd_make_section(abfd,
cache_ptr->symbol.name);
arelent_chain *reloc = (arelent_chain *)malloc(sizeof(arelent_chain));
switch ( (cache_ptr->type & N_TYPE) ) {
case N_SETA:
reloc->relent.section = (asection *)NULL;
cache_ptr->symbol.section = (asection *)NULL;
break;
case N_SETT:
reloc->relent.section = (asection *)obj_textsec(abfd);
cache_ptr->symbol.value -= reloc->relent.section->vma;
break;
case N_SETD:
reloc->relent.section = (asection *)obj_datasec(abfd);
cache_ptr->symbol.value -= reloc->relent.section->vma;
break;
case N_SETB:
reloc->relent.section = (asection *)obj_bsssec(abfd);
cache_ptr->symbol.value -= reloc->relent.section->vma;
break;
}
cache_ptr->symbol.section = reloc->relent.section;
reloc->relent.addend = cache_ptr->symbol.value ;
/*
We modify the symbol to belong to a section depending upon the
name of the symbol - probably __CTOR__ or __DTOR__ but we don't
really care, and add to the size of the section to contain a
pointer to the symbol. Build a reloc entry to relocate to this
symbol attached to this section.
*/
section->flags = SEC_CONSTRUCTOR;
section->reloc_count++;
section->alignment_power = 2;
reloc->relent.sym_ptr_ptr = (asymbol **)NULL;
reloc->next = section->constructor_chain;
section->constructor_chain = reloc;
reloc->relent.address = section->size;
section->size += sizeof(int *);
reloc->relent.howto = howto_table_ext +CTOR_TABLE_RELOC_IDX;
cache_ptr->symbol.flags |= BSF_DEBUGGING ;
}
break;
default:
if (sym_is_debugger_info (sym_pointer)) {
cache_ptr->symbol.flags = BSF_DEBUGGING ;
/* Work out the section correct for this symbol */
switch (sym_pointer->n_type & N_TYPE)
{
case N_TEXT:
case N_FN:
cache_ptr->symbol.section = obj_textsec (abfd);
cache_ptr->symbol.value -= obj_textsec(abfd)->vma;
break;
case N_DATA:
cache_ptr->symbol.value -= obj_datasec(abfd)->vma;
cache_ptr->symbol.section = obj_datasec (abfd);
break;
case N_BSS :
cache_ptr->symbol.section = obj_bsssec (abfd);
cache_ptr->symbol.value -= obj_bsssec(abfd)->vma;
break;
case N_ABS:
default:
cache_ptr->symbol.section = 0;
break;
}
}
else {
if (sym_is_fortrancommon (sym_pointer))
{
cache_ptr->symbol.flags = BSF_FORT_COMM;
cache_ptr->symbol.section = (asection *)NULL;
}
else {
if (sym_is_undefined (sym_pointer)) {
cache_ptr->symbol.flags = BSF_UNDEFINED;
}
else if (sym_is_global_defn (sym_pointer)) {
cache_ptr->symbol.flags = BSF_GLOBAL | BSF_EXPORT;
}
else if (sym_is_absolute (sym_pointer)) {
cache_ptr->symbol.flags = BSF_ABSOLUTE;
}
else {
cache_ptr->symbol.flags = BSF_LOCAL;
}
/* In a.out, the value of a symbol is always relative to the
* start of the file, if this is a data symbol we'll subtract
* the size of the text section to get the section relative
* value. If this is a bss symbol (which would be strange)
* we'll subtract the size of the previous two sections
* to find the section relative address.
*/
if (sym_in_text_section (sym_pointer)) {
cache_ptr->symbol.value -= obj_textsec(abfd)->vma;
cache_ptr->symbol.section = obj_textsec (abfd);
}
else if (sym_in_data_section (sym_pointer)){
cache_ptr->symbol.value -= obj_datasec(abfd)->vma;
cache_ptr->symbol.section = obj_datasec (abfd);
}
else if (sym_in_bss_section(sym_pointer)) {
cache_ptr->symbol.section = obj_bsssec (abfd);
cache_ptr->symbol.value -= obj_bsssec(abfd)->vma;
}
else {
cache_ptr->symbol.section = (asection *)NULL;
cache_ptr->symbol.flags |= BSF_ABSOLUTE;
}
}
}
}
}
void
translate_to_native_sym_flags (sym_pointer, cache_ptr_g, abfd)
struct nlist *sym_pointer;
generic_symbol_type *cache_ptr_g;
bfd *abfd;
{
asymbol *cache_ptr = (asymbol *)cache_ptr_g;
/* FIXME check for wrigin bss */
if (bfd_get_section(cache_ptr)) {
if (bfd_get_output_section(cache_ptr) == obj_bsssec (abfd)) {
sym_pointer->n_type |= N_BSS;
}
else if (bfd_get_output_section(cache_ptr) == obj_datasec (abfd)) {
sym_pointer->n_type |= N_DATA;
}
else if (bfd_get_output_section(cache_ptr) == obj_textsec (abfd)) {
sym_pointer->n_type |= N_TEXT;
}
else {
bfd_error_trap(bfd_error_nonrepresentable_section,
bfd_get_output_section(cache_ptr)->name);
}
/* Turn the symbol from section relative to absolute again */
sym_pointer->n_value +=
cache_ptr->section->output_section->vma
+ cache_ptr->section->output_offset ;
}
else {
sym_pointer->n_type |= N_ABS;
}
if (cache_ptr->flags & (BSF_FORT_COMM | BSF_UNDEFINED)) {
sym_pointer->n_type = (N_UNDF | N_EXT);
return;
}
if (cache_ptr->flags & BSF_ABSOLUTE) {
sym_pointer->n_type |= N_ABS;
}
if (cache_ptr->flags & (BSF_GLOBAL | BSF_EXPORT)) {
sym_pointer->n_type |= N_EXT;
}
if (cache_ptr->flags & BSF_DEBUGGING) {
sym_pointer->n_type = ((aout_symbol_type *)cache_ptr)->type;
}
}
/* Native-level interface to symbols. */
/* We read the symbols into a buffer, which is discarded when this
function exits. We read the strings into a buffer large enough to
hold them all plus all the cached symbol entries. */
asymbol *
sunos4_make_empty_symbol (abfd)
bfd *abfd;
{
aout_symbol_type *new =
(aout_symbol_type *)zalloc (sizeof (aout_symbol_type));
new->symbol.the_bfd = abfd;
return &new->symbol;
}
boolean
sunos4_slurp_symbol_table (abfd)
bfd *abfd;
{
unsigned int symbol_count;
size_t symbol_size;
size_t string_size;
struct nlist *syms;
char *strings;
aout_symbol_type *cached;
/* If there's no work to be done, don't do any */
if (obj_aout_symbols (abfd) != (aout_symbol_type *)NULL) return true;
symbol_size = exec_hdr(abfd)->a_syms;
if (symbol_size == 0) {
bfd_error = no_symbols;
return false;
}
bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET);
if (bfd_read ((void *)&string_size, 4, 1, abfd) != 4)
return false;
string_size = bfd_h_getlong (abfd, (unsigned char *)&string_size);
symbol_count = symbol_size / sizeof (struct nlist);
/* Malloc (should alloca) space for native symbols, and
malloc space for string table and symbol cache. */
syms = (struct nlist *) zalloc (symbol_size);
if (syms == NULL) {
bfd_error = no_memory;
return false;
}
cached = (aout_symbol_type *) zalloc ((size_t)(string_size + 1 +
(symbol_count * sizeof (aout_symbol_type))));
if (cached == NULL) {
bfd_error = no_memory;
free ((void *)syms);
return false;
}
strings = ((char *) cached) + (symbol_count * sizeof (aout_symbol_type));
bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET);
if (bfd_read ((void *)syms, 1, symbol_size, abfd) != symbol_size) {
bailout:
free ((void *)cached);
free ((void*)syms);
return false;
}
bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET);
if (bfd_read ((void *)strings, 1, string_size, abfd) != string_size) {
goto bailout;
}
/* OK, now walk the new symtable, cacheing symbol properties */
{
register struct nlist *sym_pointer;
register struct nlist *sym_end = syms + symbol_count;
register aout_symbol_type *cache_ptr = cached;
if (bfd_header_twiddle_required (abfd) == true) {
/* run through the table and byte swap if needed */
for (sym_pointer = syms; sym_pointer < sym_end; sym_pointer++) {
sym_pointer->n_un.n_strx =
bfd_h_get_x (abfd, &sym_pointer->n_un.n_strx);
sym_pointer->n_desc =
bfd_h_get_x (abfd, &sym_pointer->n_desc);
sym_pointer->n_value =
bfd_h_get_x (abfd, &sym_pointer->n_value);
sym_pointer->n_other = (char)
bfd_h_get_x(abfd, &sym_pointer->n_other);
sym_pointer->n_type = (char)
bfd_h_get_x(abfd, &sym_pointer->n_type);
}
}
/* Run through table and copy values */
for (sym_pointer = syms, cache_ptr = cached;
sym_pointer < sym_end; sym_pointer++, cache_ptr++)
{
cache_ptr->symbol.the_bfd = abfd;
if (sym_pointer->n_un.n_strx)
cache_ptr->symbol.name = sym_pointer->n_un.n_strx + strings;
else
cache_ptr->symbol.name = (char *)NULL;
cache_ptr->symbol.value = sym_pointer->n_value;
cache_ptr->desc = sym_pointer->n_desc;
cache_ptr->other = sym_pointer->n_other;
cache_ptr->type = sym_pointer->n_type;
cache_ptr->symbol.udata = 0;
translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd);
}
}
obj_aout_symbols (abfd) = cached;
bfd_get_symcount (abfd) = symbol_count;
free ((void *)syms);
return true;
}
void
sunos4_write_syms (abfd)
bfd *abfd;
{
unsigned int count ;
asymbol **generic = bfd_get_outsymbols (abfd);
unsigned int stindex = sizeof(stindex); /* initial string length */
for (count = 0; count < bfd_get_symcount (abfd); count++) {
asymbol *g = generic[count];
struct nlist nsp;
if (g->name) {
unsigned int length = strlen(g->name) +1;
bfd_h_putlong (abfd, stindex, (unsigned char *)&nsp.n_un.n_strx);
stindex += length;
}
else {
bfd_h_putlong (abfd, 0, (unsigned char *)&nsp.n_un.n_strx);
}
if (g->the_bfd->xvec->flavour == abfd->xvec->flavour)
{
nsp.n_desc = aout_symbol( g)->desc;
nsp.n_other = aout_symbol(g)->other;
nsp.n_type = aout_symbol(g)->type;
}
else
{
nsp.n_desc = 0;
nsp.n_other = 0;
nsp.n_type = 0;
}
nsp.n_value = g->value;
translate_to_native_sym_flags (&nsp, (generic_symbol_type *)g, abfd);
bfd_h_putshort (abfd, nsp.n_desc, (unsigned char *)&nsp.n_desc);
bfd_h_putlong (abfd, nsp.n_value, (unsigned char *)&nsp.n_value);
bfd_write((void *)&nsp,1, sizeof(nsp), abfd);
}
/* Now output the strings. Be sure to put string length into correct
* byte ordering before writing it.
*/
bfd_h_putlong (abfd, stindex, (unsigned char *)&stindex);
bfd_write((void *)&stindex, 1, sizeof(stindex), abfd);
generic = bfd_get_outsymbols(abfd);
for (count = 0; count < bfd_get_symcount(abfd); count++)
{
asymbol *g = *(generic++);
if (g->name != (char *)NULL)
{
size_t length = strlen(g->name)+1;
bfd_write((void *)g->name, 1, length, abfd);
}
if ((g->flags & BSF_FAKE)==0) {
g->name = itos(count); /* smash the generic symbol */
}
}
}
void
sunos4_reclaim_symbol_table (abfd)
bfd *abfd;
{
asection *section;
if (!bfd_get_symcount (abfd)) return;
for (section = abfd->sections;
section != (asection *) NULL;
section = section->next)
if (section->relocation) {
free ((void *)section->relocation);
section->relocation = NULL;
section->reloc_count = 0;
}
bfd_get_symcount (abfd) = 0;
free ((void *)obj_aout_symbols (abfd));
obj_aout_symbols (abfd) = (aout_symbol_type *)NULL;
}
unsigned int
sunos4_get_symtab_upper_bound (abfd)
bfd *abfd;
{
if (!sunos4_slurp_symbol_table (abfd)) return 0;
return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
}
unsigned int
sunos4_get_symtab (abfd, location)
bfd *abfd;
asymbol **location;
{
unsigned int counter = 0;
aout_symbol_type *symbase;
if (!sunos4_slurp_symbol_table (abfd)) return 0;
for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
*(location++) = (asymbol *)( symbase++);
*location++ =0;
return bfd_get_symcount(abfd);
}
/* Obsolete procedural interface; better to look at the cache directly */
/* User should have checked the file flags; perhaps we should return
BFD_NO_MORE_SYMBOLS if there are none? */
int
sunos4_get_symcount_upper_bound (abfd)
bfd *abfd;
{
/* In case we're doing an output file or something...? */
if (bfd_get_symcount (abfd)) return bfd_get_symcount (abfd);
return (exec_hdr (abfd)->a_syms) / (sizeof (struct nlist));
}
symindex
sunos4_get_first_symbol (ignore_abfd)
bfd * ignore_abfd;
{
return 0;
}
symindex
sunos4_get_next_symbol (abfd, oidx)
bfd *abfd;
symindex oidx;
{
if (oidx == BFD_NO_MORE_SYMBOLS) return BFD_NO_MORE_SYMBOLS;
return ++oidx >= bfd_get_symcount (abfd) ? BFD_NO_MORE_SYMBOLS : oidx;
}
char *
sunos4_symbol_name (abfd, idx)
bfd *abfd;
symindex idx;
{
return (obj_aout_symbols (abfd) + idx)->symbol.name;
}
long
sunos4_symbol_value (abfd, idx)
bfd *abfd;
symindex idx;
{
return (obj_aout_symbols (abfd) + idx)->symbol.value;
}
symclass
sunos4_classify_symbol (abfd, idx)
bfd *abfd;
symindex idx;
{
aout_symbol_type *sym = obj_aout_symbols (abfd) + idx;
if ((sym->symbol.flags & BSF_FORT_COMM) != 0) return bfd_symclass_fcommon;
if ((sym->symbol.flags & BSF_GLOBAL) != 0) return bfd_symclass_global;
if ((sym->symbol.flags & BSF_DEBUGGING) != 0) return bfd_symclass_debugger;
if ((sym->symbol.flags & BSF_UNDEFINED) != 0) return bfd_symclass_undefined;
return bfd_symclass_unknown;
}
boolean
sunos4_symbol_hasclass (abfd, idx, class)
bfd *abfd;
symindex idx;
symclass class;
{
aout_symbol_type *sym = obj_aout_symbols (abfd) + idx;
switch (class) {
case bfd_symclass_fcommon:
return (sym->symbol.flags & BSF_FORT_COMM) ? true :false;
case bfd_symclass_global:
return (sym->symbol.flags & BSF_GLOBAL) ? true:false;
case bfd_symclass_debugger:
return (sym->symbol.flags & BSF_DEBUGGING) ? true:false;;
case bfd_symclass_undefined:
return (sym->symbol.flags & BSF_UNDEFINED) ? true:false;;
default: return false;
}
}
/* Standard reloc stuff */
/* Output standard relocation information to a file in target byte order. */
void
swap_std_reloc_out (abfd, p, natptr, count)
bfd *abfd;
arelent **p; /* Generic relocation struct */
struct reloc_std_bytes *natptr;
unsigned int count;
{
int r_index;
int r_extern;
unsigned int r_length;
int r_pcrel;
int r_baserel, r_jmptable, r_relative;
unsigned int r_addend;
unsigned int idx;
for (idx = 0; idx < count; idx++, p++, natptr++)
{
arelent *g = *p;
bfd_h_putlong (abfd, g->address, natptr->r_address);
r_length = g->howto->size; /* Size as a power of two */
r_pcrel = g->howto->pc_relative; /* Relative to PC? */
/* r_baserel, r_jmptable, r_relative??? FIXME-soon */
r_baserel = 0;
r_jmptable = 0;
r_relative = 0;
r_addend = g->addend; /* Start here, see how it goes */
/* name was clobbered by sunos4_write_syms to be symbol index */
if (g->sym_ptr_ptr != NULL)
{
if ((*(g->sym_ptr_ptr))->section) {
/* put the section offset into the addend for output */
r_addend += (*(g->sym_ptr_ptr))->section->vma;
}
r_index = stoi((*(g->sym_ptr_ptr))->name);
r_extern = 1;
}
else {
r_extern = 0;
if (g->section == NULL) {
BFD_ASSERT(0);
r_index = N_ABS | N_EXT;
}
else if(g->section->output_section == obj_textsec(abfd)) {
r_index = N_TEXT | N_EXT;
r_addend += g->section->output_section->vma;
}
else if (g->section->output_section == obj_datasec(abfd)) {
r_index = N_DATA | N_EXT;
r_addend += g->section->output_section->vma;
}
else if (g->section->output_section == obj_bsssec(abfd)) {
r_index = N_BSS | N_EXT ;
r_addend += g->section->output_section->vma;
}
else {
BFD_ASSERT(0);
}
}
/* now the fun stuff */
if (abfd->xvec->header_byteorder_big_p != false) {
natptr->r_index[0] = r_index >> 16;
natptr->r_index[1] = r_index >> 8;
natptr->r_index[2] = r_index;
natptr->r_bits[0] =
(r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
| (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
| (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
| (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
| (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
| (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
} else {
natptr->r_index[2] = r_index >> 16;
natptr->r_index[1] = r_index >> 8;
natptr->r_index[0] = r_index;
natptr->r_bits[0] =
(r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
| (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
| (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0)
| (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0)
| (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0)
| (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE);
}
}
}
/* Extended stuff */
/* Output extended relocation information to a file in target byte order. */
void
swap_ext_reloc_out (abfd, p, natptr, count)
bfd *abfd;
arelent **p; /* Generic relocation struct */
register struct reloc_ext_bytes *natptr;
unsigned int count;
{
int r_index;
int r_extern;
unsigned int r_type;
unsigned int r_addend;
unsigned int idx;
for (idx = 0; idx < count; idx++, p++, natptr++) {
arelent *g = *p;
bfd_h_putlong (abfd, g->address, natptr->r_address);
/* Find a type in the output format which matches the input howto -
at the moment we assume input format == output format FIXME!! */
r_type = (enum reloc_type) g->howto->type;
r_addend = g->addend; /* Start here, see how it goes */
/* name was clobbered by sunos4_write_syms to be symbol index*/
if (g->sym_ptr_ptr != NULL)
{
if ((*(g->sym_ptr_ptr))->section) {
/* put the section offset into the addend for output */
r_addend += (*(g->sym_ptr_ptr))->section->vma;
}
r_index = stoi((*(g->sym_ptr_ptr))->name);
r_extern = 1;
}
else {
r_extern = 0;
if (g->section == NULL) {
BFD_ASSERT(0);
r_index = N_ABS | N_EXT;
}
else if(g->section->output_section == obj_textsec(abfd)) {
r_index = N_TEXT | N_EXT;
r_addend += g->section->output_section->vma;
}
else if (g->section->output_section == obj_datasec(abfd)) {
r_index = N_DATA | N_EXT;
r_addend += g->section->output_section->vma;
}
else if (g->section->output_section == obj_bsssec(abfd)) {
r_index = N_BSS | N_EXT ;
r_addend += g->section->output_section->vma;
}
else {
BFD_ASSERT(0);
}
}
/* now the fun stuff */
if (abfd->xvec->header_byteorder_big_p != false) {
natptr->r_index[0] = r_index >> 16;
natptr->r_index[1] = r_index >> 8;
natptr->r_index[2] = r_index;
natptr->r_bits[0] =
(r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
|| (r_type << RELOC_EXT_BITS_TYPE_SH_BIG);
} else {
natptr->r_index[2] = r_index >> 16;
natptr->r_index[1] = r_index >> 8;
natptr->r_index[0] = r_index;
natptr->r_bits[0] =
(r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
|| (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
}
bfd_h_putlong (abfd, r_addend, natptr->r_addend);
}
}
#define MOVE_ADDRESS(ad) \
if (r_extern) { \
cache_ptr->sym_ptr_ptr = symbols + r_index; \
cache_ptr->section = (asection *)NULL; \
cache_ptr->addend = ad; \
} else { \
cache_ptr->sym_ptr_ptr = (asymbol **)NULL; \
switch (r_index) { \
case N_TEXT: \
case N_TEXT | N_EXT: \
cache_ptr->section = obj_textsec(abfd); \
cache_ptr->addend = ad - su->textsec->vma; \
break; \
case N_DATA: \
case N_DATA | N_EXT: \
cache_ptr->section = obj_datasec(abfd); \
cache_ptr->addend = ad - su->datasec->vma; \
break; \
case N_BSS: \
case N_BSS | N_EXT: \
cache_ptr->section = obj_bsssec(abfd); \
cache_ptr->addend = ad - su->bsssec->vma; \
break; \
case N_ABS: \
case N_ABS | N_EXT: \
BFD_ASSERT(1); \
break; \
default: \
BFD_ASSERT(1); \
break; \
} \
} \
void
swap_ext_reloc_in (abfd, bytes, cache_ptr, symbols)
bfd *abfd;
struct reloc_ext_bytes *bytes;
arelent *cache_ptr;
asymbol **symbols;
{
int r_index;
int r_extern;
unsigned int r_type;
struct sunexdata *su = (struct sunexdata *)(abfd->tdata);
cache_ptr->address = bfd_h_getlong (abfd, bytes->r_address);
/* now the fun stuff */
if (abfd->xvec->header_byteorder_big_p != false) {
r_index = (bytes->r_index[0] << 16)
| (bytes->r_index[1] << 8)
| bytes->r_index[2];
r_extern = (0 != (bytes->r_bits[0] & RELOC_EXT_BITS_EXTERN_BIG));
r_type = (bytes->r_bits[0] & RELOC_EXT_BITS_TYPE_BIG)
>> RELOC_EXT_BITS_TYPE_SH_BIG;
} else {
r_index = (bytes->r_index[2] << 16)
| (bytes->r_index[1] << 8)
| bytes->r_index[0];
r_extern = (0 != (bytes->r_bits[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
r_type = (bytes->r_bits[0] & RELOC_EXT_BITS_TYPE_LITTLE)
>> RELOC_EXT_BITS_TYPE_SH_LITTLE;
}
cache_ptr->howto = howto_table_ext + r_type;
MOVE_ADDRESS(bfd_h_getlong(abfd,bytes->r_addend));
}
void
swap_std_reloc_in (abfd, bytes, cache_ptr, symbols)
bfd *abfd;
struct reloc_std_bytes *bytes;
arelent *cache_ptr;
asymbol **symbols;
{
int r_index;
int r_extern;
unsigned int r_length;
int r_pcrel;
int r_baserel, r_jmptable, r_relative;
struct sunexdata *su = (struct sunexdata *)(abfd->tdata);
cache_ptr->address = bfd_h_getlong (abfd, bytes->r_address);
/* now the fun stuff */
if (abfd->xvec->header_byteorder_big_p != false) {
r_index = (bytes->r_index[0] << 16)
| (bytes->r_index[1] << 8)
| bytes->r_index[2];
r_extern = (0 != (bytes->r_bits[0] & RELOC_STD_BITS_EXTERN_BIG));
r_pcrel = (0 != (bytes->r_bits[0] & RELOC_STD_BITS_PCREL_BIG));
r_baserel = (0 != (bytes->r_bits[0] & RELOC_STD_BITS_BASEREL_BIG));
r_jmptable= (0 != (bytes->r_bits[0] & RELOC_STD_BITS_JMPTABLE_BIG));
r_relative= (0 != (bytes->r_bits[0] & RELOC_STD_BITS_RELATIVE_BIG));
r_length = (bytes->r_bits[0] & RELOC_STD_BITS_LENGTH_BIG)
>> RELOC_STD_BITS_LENGTH_SH_BIG;
} else {
r_index = (bytes->r_index[2] << 16)
| (bytes->r_index[1] << 8)
| bytes->r_index[0];
r_extern = (0 != (bytes->r_bits[0] & RELOC_STD_BITS_EXTERN_LITTLE));
r_pcrel = (0 != (bytes->r_bits[0] & RELOC_STD_BITS_PCREL_LITTLE));
r_baserel = (0 != (bytes->r_bits[0] & RELOC_STD_BITS_BASEREL_LITTLE));
r_jmptable= (0 != (bytes->r_bits[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
r_relative= (0 != (bytes->r_bits[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
r_length = (bytes->r_bits[0] & RELOC_STD_BITS_LENGTH_LITTLE)
>> RELOC_STD_BITS_LENGTH_SH_LITTLE;
}
cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel;
/* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */
MOVE_ADDRESS(0);
}
/* Reloc hackery */
boolean
sunos4_slurp_reloc_table (abfd, asect, symbols)
bfd *abfd;
sec_ptr asect;
asymbol **symbols;
{
unsigned int count;
size_t reloc_size;
void *relocs;
arelent *reloc_cache;
size_t each_size;
if (asect->relocation) return true;
if (asect->flags & SEC_CONSTRUCTOR) return true;
if (asect == obj_datasec (abfd)) {
reloc_size = exec_hdr(abfd)->a_drsize;
goto doit;
}
if (asect == obj_textsec (abfd)) {
reloc_size = exec_hdr(abfd)->a_trsize;
goto doit;
}
bfd_error = invalid_operation;
return false;
doit:
bfd_seek (abfd, asect->rel_filepos, SEEK_SET);
each_size = reloc_size_func(abfd);
count = reloc_size / each_size;
relocs = malloc (reloc_size);
if (!relocs) {
bfd_error = no_memory;
return false;
}
reloc_cache = (arelent *) zalloc ((size_t)(count * sizeof (arelent)));
if (reloc_cache == (arelent *)NULL) {
free (relocs);
bfd_error = no_memory;
return false;
}
if (bfd_read ( relocs, 1, reloc_size, abfd) != reloc_size) {
bfd_error = system_call_error;
free (reloc_cache);
free (relocs);
return false;
}
if (each_size == RELOC_EXT_SIZE)
{
register struct reloc_ext_bytes *rptr = relocs;
unsigned int counter = 0;
arelent *cache_ptr = reloc_cache;
for (; counter < count; counter++, rptr++, cache_ptr++) {
swap_ext_reloc_in(abfd, rptr, cache_ptr, symbols);
}
}
else {
register struct reloc_std_bytes *rptr = relocs;
unsigned int counter = 0;
arelent *cache_ptr = reloc_cache;
for (; counter < count; counter++, rptr++, cache_ptr++) {
swap_std_reloc_in(abfd, rptr, cache_ptr, symbols);
}
}
free (relocs);
asect->relocation = reloc_cache;
asect->reloc_count = count;
return true;
}
/* Write out a relocation section into an object file. */
static boolean
sunos4_squirt_out_relocs (abfd, section)
bfd *abfd;
asection *section;
{
arelent **generic;
unsigned char *native;
size_t each_size;
unsigned int count = section->reloc_count;
size_t natsize;
if (count == 0) return true;
each_size = reloc_size_func(abfd);
natsize = each_size * count;
native = (unsigned char *) zalloc (natsize);
if (!native) {
bfd_error = no_memory;
return false;
}
generic = section->orelocation;
if (each_size == RELOC_EXT_SIZE)
{
swap_ext_reloc_out (abfd,
generic,
(struct reloc_ext_bytes *)native,
count);
}
else
{
swap_std_reloc_out(abfd, generic, native, count);
}
if ( bfd_write ((void *) native, 1, natsize, abfd) != natsize) {
free(native);
return false;
}
free (native);
return true;
}
/* This is stupid. This function should be a boolean predicate */
unsigned int
sunos4_canonicalize_reloc (abfd, section, relptr, symbols)
bfd *abfd;
sec_ptr section;
arelent **relptr;
asymbol **symbols;
{
arelent *tblptr = section->relocation;
unsigned int count;
if (!(tblptr || sunos4_slurp_reloc_table (abfd, section, symbols)))
return 0;
if (section->flags & SEC_CONSTRUCTOR) {
arelent_chain *chain = section->constructor_chain;
for (count = 0; count < section->reloc_count; count ++) {
*relptr ++ = &chain->relent;
chain = chain->next;
}
}
else {
tblptr = section->relocation;
if (!tblptr) return 0;
for (count = 0; count++ < section->reloc_count;)
{
*relptr++ = tblptr++;
}
}
*relptr = 0;
return section->reloc_count;
}
unsigned int
sunos4_get_reloc_upper_bound (abfd, asect)
bfd *abfd;
sec_ptr asect;
{
if (bfd_get_format (abfd) != bfd_object) {
bfd_error = invalid_operation;
return 0;
}
if (asect->flags & SEC_CONSTRUCTOR) {
return (sizeof (arelent *) * (asect->reloc_count+1));
}
if (asect == obj_datasec (abfd))
return (sizeof (arelent *) *
((exec_hdr(abfd)->a_drsize / reloc_size_func(abfd))
+1));
if (asect == obj_textsec (abfd))
return (sizeof (arelent *) *
((exec_hdr(abfd)->a_trsize / reloc_size_func(abfd))
+1));
bfd_error = invalid_operation;
return 0;
}
void
sunos4_reclaim_reloc (ignore_abfd, section)
bfd *ignore_abfd;
sec_ptr section;
{
if (section->relocation) {
free (section->relocation);
section->relocation = NULL;
section->reloc_count = 0;
}
}
alent *
sunos4_get_lineno(ignore_abfd, ignore_symbol)
bfd *ignore_abfd;
generic_symbol_type *ignore_symbol;
{
return (alent *)NULL;
}
void
sunos4_print_symbol(ignore_abfd, file, symbol, how)
bfd *ignore_abfd;
FILE *file;
asymbol *symbol;
bfd_print_symbol_enum_type how;
{
switch (how) {
case bfd_print_symbol_name_enum:
fprintf(file,"%s", symbol->name);
break;
case bfd_print_symbol_type_enum:
fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff),
(unsigned)( aout_symbol(symbol)->other & 0xff),
(unsigned)(aout_symbol(symbol)->type));
break;
case bfd_print_symbol_all_enum:
{
char *section_name = symbol->section == (asection *)NULL ?
"*abs" : symbol->section->name;
bfd_print_symbol_vandf((void *)file,symbol);
fprintf(file," %-5s %04x %02x %02x %s",
section_name,
(unsigned)(aout_symbol(symbol)->desc & 0xffff),
(unsigned)(aout_symbol(symbol)->other & 0xff),
(unsigned)(aout_symbol(symbol)->type & 0xff),
symbol->name);
}
break;
}
}
/* Once we know all the stuff that could be consed, we know how to clean
it up. So why don't we? */
boolean
sunos4_close_and_cleanup (abfd)
bfd *abfd;
{
if (!bfd_read_p (abfd))
switch (abfd->format) {
case bfd_archive:
if (!_bfd_write_archive_contents (abfd)) return false; break;
case bfd_object:
if (!sunos4_write_object_contents (abfd)) return false; break;
default: bfd_error = invalid_operation; return false;
}
#define cleaner(ptr) if (abfd->ptr) free (abfd->ptr)
cleaner (tdata);
if (abfd->my_archive)
cleaner (filename);
#undef cleaner
return true;
}
/*
provided a bfd, a section and an offset into the section, calculate
and return the name of the source file and the line nearest to the
wanted location.
*/
boolean
sunos4_find_nearest_line(abfd,
section,
symbols,
offset,
filename_ptr,
functionname_ptr,
line_ptr)
bfd *abfd;
asection *section;
asymbol **symbols;
bfd_vma offset;
char **filename_ptr;
char **functionname_ptr;
unsigned int *line_ptr;
{
/* Run down the file looking for the filename, function and linenumber */
asymbol **p;
static char buffer[100];
bfd_vma high_line_vma = ~0;
bfd_vma low_func_vma = 0;
asymbol *func = 0;
*filename_ptr = abfd->filename;
*functionname_ptr = 0;
*line_ptr = 0;
if (symbols != (asymbol **)NULL) {
for (p = symbols; *p; p++) {
aout_symbol_type *q = (aout_symbol_type *)(*p);
switch (q->type){
case N_SO:
*filename_ptr = q->symbol.name;
if (obj_textsec(abfd) != section) {
return true;
}
break;
case N_SLINE:
case N_DSLINE:
case N_BSLINE:
/* We'll keep this if it resolves nearer than the one we have already */
if (q->symbol.value >= offset &&
q->symbol.value < high_line_vma) {
*line_ptr = q->desc;
high_line_vma = q->symbol.value;
}
break;
case N_FUN:
{
/* We'll keep this if it is nearer than the one we have already */
if (q->symbol.value >= low_func_vma &&
q->symbol.value <= offset) {
low_func_vma = q->symbol.value;
func = (asymbol *)q;
}
if (*line_ptr && func) {
char *function = func->name;
char *p;
strncpy(buffer, function, sizeof(buffer)-1);
buffer[sizeof(buffer)-1] = 0;
/* Have to remove : stuff */
p = strchr(buffer,':');
if (p != NULL) {*p = NULL; }
*functionname_ptr = buffer;
return true;
}
}
break;
}
}
}
return true;
}
bfd_target aoutvec =
{
"a.out-generic-big", /* name */
bfd_target_aout_flavour_enum,
true, /* target byte order */
true, /* target headers byte order */
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
0, /* valid reloc types */
' ', /* ar_pad_char */
16, /* ar_max_namelen */
sunos4_close_and_cleanup, /* _close_and_cleanup */
sunos4_set_section_contents, /* bfd_set_section_contents */
sunos4_get_section_contents, /* bfd_get_section_contents */
sunos4_new_section_hook, /* new_section_hook */
sunos4_core_file_failing_command, /* _core_file_failing_command */
sunos4_core_file_failing_signal, /* _core_file_failing_signal */
sunos4_core_file_matches_executable_p, /* _core_file_matches_ex...p */
bfd_slurp_bsd_armap, /* bfd_slurp_armap */
bfd_true, /* bfd_slurp_extended_name_table */
bfd_bsd_truncate_arname, /* bfd_truncate_arname */
sunos4_get_symtab_upper_bound, /* get_symtab_upper_bound */
sunos4_get_symtab, /* canonicalize_symtab */
sunos4_reclaim_symbol_table, /* bfd_reclaim_symbol_table */
sunos4_get_reloc_upper_bound, /* get_reloc_upper_bound */
sunos4_canonicalize_reloc, /* bfd_canonicalize_reloc */
sunos4_reclaim_reloc, /* bfd_reclaim_reloc */
sunos4_get_symcount_upper_bound, /* bfd_get_symcount_upper_bound */
sunos4_get_first_symbol, /* bfd_get_first_symbol */
sunos4_get_next_symbol, /* bfd_get_next_symbol */
sunos4_classify_symbol, /* bfd_classify_symbol */
sunos4_symbol_hasclass, /* bfd_symbol_hasclass */
sunos4_symbol_name, /* bfd_symbol_name */
sunos4_symbol_value, /* bfd_symbol_value */
_do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* data */
_do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* hdrs */
{_bfd_dummy_target, sunos4_object_p, /* bfd_check_format */
bfd_generic_archive_p, sunos4_core_file_p},
{bfd_false, sunos4_mkobject, /* bfd_zxset_format */
_bfd_generic_mkarchive, bfd_false},
sunos4_make_empty_symbol,
sunos4_print_symbol,
sunos4_get_lineno,
sunos4_set_arch_mach,
bsd_write_armap,
bfd_generic_openr_next_archived_file,
sunos4_find_nearest_line, /* bfd_find_nearest_line */
bfd_generic_stat_arch_elt /* bfd_stat_arch_elt */
};
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