mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-24 07:31:32 +00:00
379 lines
12 KiB
C
379 lines
12 KiB
C
/* Support for 32-bit SPARC NLM (NetWare Loadable Module)
|
|
Copyright (C) 1993-2017 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#include "sysdep.h"
|
|
#include "bfd.h"
|
|
#include "libbfd.h"
|
|
|
|
#define ARCH_SIZE 32
|
|
|
|
#include "nlm/sparc32-ext.h"
|
|
#define Nlm_External_Fixed_Header Nlm32_sparc_External_Fixed_Header
|
|
|
|
#include "libnlm.h"
|
|
|
|
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
|
|
};
|
|
|
|
static reloc_howto_type nlm32_sparc_howto_table[] =
|
|
{
|
|
HOWTO (R_SPARC_NONE, 0,3, 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 bfd_boolean
|
|
nlm_sparc_read_reloc (bfd *abfd,
|
|
nlmNAME (symbol_type) *sym ATTRIBUTE_UNUSED,
|
|
asection **secp,
|
|
arelent *rel)
|
|
{
|
|
bfd_vma val, addend;
|
|
unsigned int howto_index;
|
|
unsigned int type;
|
|
struct nlm32_sparc_reloc_ext tmp_reloc;
|
|
asection *code_sec;
|
|
|
|
if (bfd_bread (&tmp_reloc, (bfd_size_type) 12, abfd) != 12)
|
|
return FALSE;
|
|
|
|
code_sec = bfd_get_section_by_name (abfd, NLM_CODE_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 (howto_index = 0;
|
|
howto_index < sizeof (nlm32_sparc_howto_table) / sizeof (reloc_howto_type);
|
|
howto_index++)
|
|
if (nlm32_sparc_howto_table[howto_index].type == type)
|
|
{
|
|
rel->howto = &nlm32_sparc_howto_table[howto_index];
|
|
break;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
fprintf (stderr, "%s: address = %08lx, addend = %08lx, type = %u, howto = %p\n",
|
|
__FUNCTION__, (unsigned long) rel->address,
|
|
(unsigned long) rel->addend, type, rel->howto);
|
|
#endif
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
/* Write a NetWare sparc reloc. */
|
|
|
|
static bfd_boolean
|
|
nlm_sparc_write_reloc (bfd * abfd, asection * sec, arelent * rel)
|
|
{
|
|
bfd_vma val;
|
|
struct nlm32_sparc_reloc_ext tmp_reloc;
|
|
unsigned int howto_index;
|
|
int type = -1;
|
|
reloc_howto_type *tmp;
|
|
|
|
for (howto_index = 0;
|
|
howto_index < sizeof (nlm32_sparc_howto_table) / sizeof (reloc_howto_type);
|
|
howto_index++)
|
|
{
|
|
tmp = &nlm32_sparc_howto_table[howto_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. */
|
|
val = bfd_get_section_vma (abfd, sec) + rel->address;
|
|
|
|
#ifdef DEBUG
|
|
fprintf (stderr, "%s: val = %08lx, addend = %08lx, type = %u\n",
|
|
__FUNCTION__, (unsigned long) val, (unsigned long) 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_bwrite (&tmp_reloc, (bfd_size_type) 12, abfd) != 12)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Mangle relocs for SPARC NetWare. We can just use the standard
|
|
SPARC relocs. */
|
|
|
|
static bfd_boolean
|
|
nlm_sparc_mangle_relocs (bfd *abfd ATTRIBUTE_UNUSED,
|
|
asection *sec ATTRIBUTE_UNUSED,
|
|
const void * data ATTRIBUTE_UNUSED,
|
|
bfd_vma offset ATTRIBUTE_UNUSED,
|
|
bfd_size_type count ATTRIBUTE_UNUSED)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
/* Read a NetWare sparc import record. */
|
|
|
|
static bfd_boolean
|
|
nlm_sparc_read_import (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. */
|
|
char *name;
|
|
|
|
/* First, read in the number of relocation
|
|
entries for this symbol. */
|
|
if (bfd_bread (temp, (bfd_size_type) 4, abfd) != 4)
|
|
return FALSE;
|
|
|
|
rcount = bfd_get_32 (abfd, temp);
|
|
|
|
/* Next, read in the length of the symbol. */
|
|
if (bfd_bread (& symlength, (bfd_size_type) sizeof (symlength), abfd)
|
|
!= sizeof (symlength))
|
|
return FALSE;
|
|
sym -> symbol.the_bfd = abfd;
|
|
name = bfd_alloc (abfd, (bfd_size_type) symlength + 1);
|
|
if (name == NULL)
|
|
return FALSE;
|
|
|
|
/* Then read in the symbol. */
|
|
if (bfd_bread (name, (bfd_size_type) symlength, abfd) != symlength)
|
|
return FALSE;
|
|
name[symlength] = '\0';
|
|
sym -> symbol.name = name;
|
|
sym -> symbol.flags = 0;
|
|
sym -> symbol.value = 0;
|
|
sym -> symbol.section = bfd_und_section_ptr;
|
|
|
|
/* Next, start reading in the relocs. */
|
|
nlm_relocs = bfd_alloc (abfd, rcount * sizeof (struct nlm_relent));
|
|
if (!nlm_relocs)
|
|
return FALSE;
|
|
sym -> relocs = nlm_relocs;
|
|
sym -> rcnt = 0;
|
|
while (sym -> rcnt < rcount)
|
|
{
|
|
asection *section;
|
|
|
|
if (! nlm_sparc_read_reloc (abfd, sym, §ion, &nlm_relocs -> reloc))
|
|
return FALSE;
|
|
nlm_relocs -> section = section;
|
|
nlm_relocs++;
|
|
sym -> rcnt++;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
nlm_sparc_write_import (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 = code->size;
|
|
else if (symsec == bss)
|
|
base = code->size + data->size;
|
|
else
|
|
base = 0;
|
|
|
|
#ifdef DEBUG
|
|
fprintf (stderr, "%s: <%lx, 1>\n\t",
|
|
__FUNCTION__, (unsigned long) (base + (*rel->sym_ptr_ptr)->value));
|
|
#endif
|
|
bfd_put_32 (abfd, base + (*rel->sym_ptr_ptr)->value, temp);
|
|
if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4)
|
|
return FALSE;
|
|
bfd_put_32 (abfd, (bfd_vma) 1, temp);
|
|
if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4)
|
|
return FALSE;
|
|
if (! nlm_sparc_write_reloc (abfd, sec, rel))
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
/* Write out an external reference. */
|
|
|
|
static bfd_boolean
|
|
nlm_sparc_write_external (bfd *abfd,
|
|
bfd_size_type count,
|
|
asymbol *sym,
|
|
struct reloc_and_sec *relocs)
|
|
{
|
|
unsigned int i;
|
|
bfd_byte len;
|
|
unsigned char temp[NLM_TARGET_LONG_SIZE];
|
|
|
|
bfd_put_32 (abfd, count, temp);
|
|
if (bfd_bwrite (temp, (bfd_size_type) sizeof (temp), abfd) != sizeof (temp))
|
|
return FALSE;
|
|
|
|
len = strlen (sym->name);
|
|
if ((bfd_bwrite (&len, (bfd_size_type) sizeof (bfd_byte), abfd)
|
|
!= sizeof (bfd_byte))
|
|
|| bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < count; i++)
|
|
if (! nlm_sparc_write_reloc (abfd, relocs[i].sec, relocs[i].rel))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
nlm_sparc_write_export (bfd * abfd, asymbol * sym, bfd_vma value)
|
|
{
|
|
bfd_byte len;
|
|
bfd_byte temp[4];
|
|
|
|
#ifdef DEBUG
|
|
fprintf (stderr, "%s: <%lx, %u, %s>\n",
|
|
__FUNCTION__, (unsigned long) value, strlen (sym->name), sym->name);
|
|
#endif
|
|
bfd_put_32 (abfd, value, temp);
|
|
len = strlen (sym->name);
|
|
|
|
if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4
|
|
|| bfd_bwrite (&len, (bfd_size_type) 1, abfd) != 1
|
|
|| bfd_bwrite (sym->name, (bfd_size_type) len, 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 sparc_nlm32_vec
|
|
#define TARGET_BACKEND_DATA & nlm32_sparc_backend
|
|
|
|
#include "nlm-target.h"
|