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old-cross-binutils/bfd/nlm32-sparc.c
Jeff Law 250578363e * libbfd.c (bfd_read): Set bfd_error as appropriate for a short 
read. (bfd_error_system_call or bfd_error_file_truncated).

        * som.c: Do not blindly set bfd_error_system_call after a
        failing bfd_read, bfd_write, or bfd_seek.  In a few places
        (like som_object_p) override the error status set by bfd_read.

        * aix386-core.c, aout-encap,c archive.c, bout.c: Likewise.
        * coff-rs6000.c, coffgen.c ecoff.c, elf.c: Likewise.
        * elf32-hppa.c, elfcode.h, hp300hpux.c, i386lynx.c: Likewise.
        * nlm32-alpha.c, nlm32-i386.c, nlm32-sparc.c: Likewise.

        * som.c: Check return values from several bfd_{seek,read,write}
        calls that we just assumed were not failing.
1994-03-26 18:28:29 +00:00

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/* Support for 32-bit SPARC NLM (NetWare Loadable Module)
Copyright (C) 1993 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#define ARCH_SIZE 32
#include "nlm/sparc32-ext.h"
#define Nlm_External_Fixed_Header Nlm32_sparc_External_Fixed_Header
#include "libnlm.h"
static boolean nlm_sparc_read_reloc
PARAMS ((bfd *, nlmNAME(symbol_type) *, asection **, arelent *));
static boolean nlm_sparc_write_reloc
PARAMS ((bfd *, asection *, arelent *));
static boolean nlm_sparc_mangle_relocs
PARAMS ((bfd *, asection *, PTR, bfd_vma, bfd_size_type));
static boolean nlm_sparc_read_import
PARAMS ((bfd *, nlmNAME(symbol_type) *));
static boolean nlm_sparc_write_import
PARAMS ((bfd *, asection *, arelent *));
static boolean nlm_sparc_write_external
PARAMS ((bfd *, bfd_size_type, asymbol *, struct reloc_and_sec *));
enum reloc_type
{
R_SPARC_NONE = 0,
R_SPARC_8, R_SPARC_16, R_SPARC_32,
R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32,
R_SPARC_WDISP30, R_SPARC_WDISP22,
R_SPARC_HI22, R_SPARC_22,
R_SPARC_13, R_SPARC_LO10,
R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22,
R_SPARC_PC10, R_SPARC_PC22,
R_SPARC_WPLT30,
R_SPARC_COPY,
R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT,
R_SPARC_RELATIVE,
R_SPARC_UA32,
R_SPARC_max
};
#if 0
static CONST char *CONST reloc_type_names[] =
{
"R_SPARC_NONE",
"R_SPARC_8", "R_SPARC_16", "R_SPARC_32",
"R_SPARC_DISP8", "R_SPARC_DISP16", "R_SPARC_DISP32",
"R_SPARC_WDISP30", "R_SPARC_WDISP22",
"R_SPARC_HI22", "R_SPARC_22",
"R_SPARC_13", "R_SPARC_LO10",
"R_SPARC_GOT10", "R_SPARC_GOT13", "R_SPARC_GOT22",
"R_SPARC_PC10", "R_SPARC_PC22",
"R_SPARC_WPLT30",
"R_SPARC_COPY",
"R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT",
"R_SPARC_RELATIVE",
"R_SPARC_UA32",
};
#endif
static reloc_howto_type nlm32_sparc_howto_table[] =
{
HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, 0,"R_SPARC_NONE", false,0,0x00000000,true),
HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,0,"R_SPARC_8", false,0,0x000000ff,true),
HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,0,"R_SPARC_16", false,0,0x0000ffff,true),
HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,0,"R_SPARC_32", false,0,0xffffffff,true),
HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, 0,"R_SPARC_DISP8", false,0,0x000000ff,true),
HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, 0,"R_SPARC_DISP16", false,0,0x0000ffff,true),
HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, 0,"R_SPARC_DISP32", false,0,0x00ffffff,true),
HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, 0,"R_SPARC_WDISP30", false,0,0x3fffffff,true),
HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, 0,"R_SPARC_WDISP22", false,0,0x003fffff,true),
HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, 0,"R_SPARC_HI22", false,0,0x003fffff,true),
HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,0,"R_SPARC_22", false,0,0x003fffff,true),
HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,0,"R_SPARC_13", false,0,0x00001fff,true),
HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, 0,"R_SPARC_LO10", false,0,0x000003ff,true),
HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_bitfield,0,"R_SPARC_GOT10", false,0,0x000003ff,true),
HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_bitfield,0,"R_SPARC_GOT13", false,0,0x00001fff,true),
HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_bitfield,0,"R_SPARC_GOT22", false,0,0x003fffff,true),
HOWTO(R_SPARC_PC10, 0,2,10,false,0,complain_overflow_bitfield,0,"R_SPARC_PC10", false,0,0x000003ff,true),
HOWTO(R_SPARC_PC22, 0,2,22,false,0,complain_overflow_bitfield,0,"R_SPARC_PC22", false,0,0x003fffff,true),
HOWTO(R_SPARC_WPLT30, 0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_WPLT30", false,0,0x00000000,true),
HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_COPY", false,0,0x00000000,true),
HOWTO(R_SPARC_GLOB_DAT,0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_GLOB_DAT",false,0,0x00000000,true),
HOWTO(R_SPARC_JMP_SLOT,0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_JMP_SLOT",false,0,0x00000000,true),
HOWTO(R_SPARC_RELATIVE,0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_RELATIVE",false,0,0x00000000,true),
HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_UA32", false,0,0x00000000,true),
};
/* Read a NetWare sparc reloc. */
struct nlm32_sparc_reloc_ext {
unsigned char offset[4];
unsigned char addend[4];
unsigned char type[1];
unsigned char pad1[3];
};
static boolean
nlm_sparc_read_reloc (abfd, sym, secp, rel)
bfd *abfd;
nlmNAME(symbol_type) *sym;
asection **secp;
arelent *rel;
{
bfd_byte temp[4];
bfd_vma val, addend;
const char *name;
int index;
unsigned int type;
struct nlm32_sparc_reloc_ext tmp_reloc;
asection *code_sec, *data_sec;
if (bfd_read (&tmp_reloc, 12, 1, abfd) != 12)
return false;
code_sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
data_sec = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
*secp = code_sec;
val = bfd_get_32 (abfd, tmp_reloc.offset);
addend = bfd_get_32 (abfd, tmp_reloc.addend);
type = bfd_get_8 (abfd, tmp_reloc.type);
rel->address = val;
rel->addend = addend;
rel->howto = NULL;
for (index = 0;
index < sizeof(nlm32_sparc_howto_table) / sizeof(reloc_howto_type);
index++)
if (nlm32_sparc_howto_table[index].type == type) {
rel->howto = &nlm32_sparc_howto_table[index];
break;
}
#ifdef DEBUG
fprintf (stderr, "%s: address = %08lx, addend = %08lx, type = %d, howto = %08lx\n",
__FUNCTION__, rel->address, rel->addend, type, rel->howto);
#endif
return true;
}
/* Write a NetWare sparc reloc. */
static boolean
nlm_sparc_write_reloc (abfd, sec, rel)
bfd *abfd;
asection *sec;
arelent *rel;
{
bfd_vma val;
struct nlm32_sparc_reloc_ext tmp_reloc;
int index;
int type = -1;
reloc_howto_type *tmp;
for (index = 0;
index < sizeof (nlm32_sparc_howto_table) / sizeof(reloc_howto_type);
index++) {
tmp = &nlm32_sparc_howto_table[index];
if (tmp->rightshift == rel->howto->rightshift
&& tmp->size == rel->howto->size
&& tmp->bitsize == rel->howto->bitsize
&& tmp->pc_relative == rel->howto->pc_relative
&& tmp->bitpos == rel->howto->bitpos
&& tmp->src_mask == rel->howto->src_mask
&& tmp->dst_mask == rel->howto->dst_mask) {
type = tmp->type;
break;
}
}
if (type == -1)
abort();
/*
* Netware wants a list of relocs for each address.
* Format is:
* long offset
* long addend
* char type
* That should be it.
*/
/* The value we write out is the offset into the appropriate
segment. This offset is the section vma, adjusted by the vma of
the lowest section in that segment, plus the address of the
relocation. */
#if 0
val = bfd_get_section_vma (abfd, (*rel->sym_ptr_ptr)->section) + rel->address;
#else
val = bfd_get_section_vma (abfd, sec) + rel->address;
#endif
#ifdef DEBUG
fprintf (stderr, "%s: val = %08lx, addend = %08lx, type = %d\n",
__FUNCTION__, val, rel->addend, rel->howto->type);
#endif
bfd_put_32 (abfd, val, tmp_reloc.offset);
bfd_put_32 (abfd, rel->addend, tmp_reloc.addend);
bfd_put_8 (abfd, (short)(rel->howto->type), tmp_reloc.type);
if (bfd_write (&tmp_reloc, 12, 1, abfd) != 12)
{
abort();
}
return true;
}
/* Mangle relocs for SPARC NetWare. We can just use the standard
SPARC relocs. */
static boolean
nlm_sparc_mangle_relocs (abfd, sec, data, offset, count)
bfd *abfd;
asection *sec;
PTR data;
bfd_vma offset;
bfd_size_type count;
{
return true;
}
/* Read a NetWare sparc import record */
static boolean
nlm_sparc_read_import (abfd, sym)
bfd *abfd;
nlmNAME(symbol_type) *sym;
{
struct nlm_relent *nlm_relocs; /* relocation records for symbol */
bfd_size_type rcount; /* number of relocs */
bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* temporary 32-bit value */
unsigned char symlength; /* length of symbol name */
/*
* First, read in the number of relocation
* entries for this symbol
*/
if (bfd_read ((PTR) temp, 4, 1, abfd) != 4)
return false;
rcount = bfd_get_32 (abfd, temp);
/*
* Next, read in the length of the symbol
*/
if (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd)
!= sizeof (symlength))
return false;
sym -> symbol.the_bfd = abfd;
sym -> symbol.name = bfd_alloc (abfd, symlength + 1);
if (!sym -> symbol.name)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
/*
* Then read in the symbol
*/
if (bfd_read ((PTR) sym -> symbol.name, symlength, 1, abfd)
!= symlength)
return false;
sym -> symbol.flags = 0;
sym -> symbol.value = 0;
sym -> symbol.section = &bfd_und_section;
/*
* Next, start reading in the relocs.
*/
nlm_relocs = ((struct nlm_relent *)
bfd_alloc (abfd, rcount * sizeof (struct nlm_relent)));
if (!nlm_relocs)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
sym -> relocs = nlm_relocs;
sym -> rcnt = 0;
while (sym -> rcnt < rcount)
{
asection *section;
if (nlm_sparc_read_reloc (abfd, sym, &section,
&nlm_relocs -> reloc)
== false)
return false;
nlm_relocs -> section = section;
nlm_relocs++;
sym -> rcnt++;
}
return true;
}
static boolean
nlm_sparc_write_import (abfd, sec, rel)
bfd *abfd;
asection *sec;
arelent *rel;
{
char temp[4];
asection *code, *data, *bss, *symsec;
bfd_vma base;
code = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
data = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
bss = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME);
symsec = (*rel->sym_ptr_ptr)->section;
if (symsec == code) {
base = 0;
} else if (symsec == data) {
base = bfd_section_size (abfd, code);
} else if (symsec == bss) {
base = bfd_section_size (abfd, code) + bfd_section_size (abfd, data);
} else
base = 0;
#ifdef DEBUG
fprintf (stderr, "%s: <%x, 1>\n\t",
__FUNCTION__, base + (*rel->sym_ptr_ptr)->value);
#endif
bfd_put_32 (abfd, base + (*rel->sym_ptr_ptr)->value, temp);
bfd_write ((PTR)temp, 4, 1, abfd);
bfd_put_32 (abfd, 1, temp);
bfd_write ((PTR)temp, 4, 1, abfd);
if (nlm_sparc_write_reloc (abfd, sec, rel) == false)
return false;
return true;
}
/* Write out an external reference. */
static boolean
nlm_sparc_write_external (abfd, count, sym, relocs)
bfd *abfd;
bfd_size_type count;
asymbol *sym;
struct reloc_and_sec *relocs;
{
int i;
bfd_byte len;
unsigned char temp[NLM_TARGET_LONG_SIZE];
bfd_put_32 (abfd, count, temp);
if (bfd_write (temp, sizeof(temp), 1, abfd) != sizeof (temp))
return false;
len = strlen (sym->name);
if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) != sizeof(bfd_byte))
|| bfd_write (sym->name, len, 1, abfd) != len)
return false;
for (i = 0; i < count; i++)
{
if (nlm_sparc_write_reloc (abfd, relocs[i].sec,
relocs[i].rel) == false)
return false;
}
return true;
}
static boolean
nlm_sparc_write_export (abfd, sym, value)
bfd *abfd;
asymbol *sym;
bfd_vma value;
{
bfd_byte len;
bfd_byte temp[4];
#ifdef DEBUG
fprintf (stderr, "%s: <%x, %d, %s>\n",
__FUNCTION__, value, strlen (sym->name), sym->name);
#endif
bfd_put_32 (abfd, value, temp);
len = strlen (sym->name);
if (bfd_write (temp, 4, 1, abfd) != 4
|| bfd_write (&len, 1, 1, abfd) != 1
|| bfd_write (sym->name, len, 1, abfd) != len)
return false;
return true;
}
#undef nlm_swap_fixed_header_in
#undef nlm_swap_fixed_header_out
#include "nlmswap.h"
static const struct nlm_backend_data nlm32_sparc_backend =
{
"NetWare SPARC Module \032",
sizeof (Nlm32_sparc_External_Fixed_Header),
0, /* optional_prefix_size */
bfd_arch_sparc,
0,
false,
0, /* backend_object_p */
0, /* write_prefix_func */
nlm_sparc_read_reloc,
nlm_sparc_mangle_relocs,
nlm_sparc_read_import,
nlm_sparc_write_import,
0, /* set_public_section */
0, /* get_public_offset */
nlm_swap_fixed_header_in,
nlm_swap_fixed_header_out,
nlm_sparc_write_external,
nlm_sparc_write_export
};
#define TARGET_BIG_NAME "nlm32-sparc"
#define TARGET_BIG_SYM nlmNAME(sparc_vec)
#define TARGET_BACKEND_DATA &nlm32_sparc_backend
#include "nlm-target.h"
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