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382 lines
12 KiB
C
382 lines
12 KiB
C
/* Support for 32-bit SPARC NLM (NetWare Loadable Module)
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Copyright 1993, 1994, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
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2007, 2009 Free Software Foundation, Inc.
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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 3 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., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#define ARCH_SIZE 32
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#include "nlm/sparc32-ext.h"
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#define Nlm_External_Fixed_Header Nlm32_sparc_External_Fixed_Header
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#include "libnlm.h"
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enum reloc_type
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{
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R_SPARC_NONE = 0,
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R_SPARC_8, R_SPARC_16, R_SPARC_32,
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R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32,
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R_SPARC_WDISP30, R_SPARC_WDISP22,
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R_SPARC_HI22, R_SPARC_22,
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R_SPARC_13, R_SPARC_LO10,
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R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22,
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R_SPARC_PC10, R_SPARC_PC22,
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R_SPARC_WPLT30,
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R_SPARC_COPY,
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R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT,
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R_SPARC_RELATIVE,
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R_SPARC_UA32,
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R_SPARC_max
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};
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static reloc_howto_type nlm32_sparc_howto_table[] =
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{
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HOWTO (R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, 0,"R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
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HOWTO (R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_8", FALSE,0,0x000000ff,TRUE),
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HOWTO (R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
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HOWTO (R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_32", FALSE,0,0xffffffff,TRUE),
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HOWTO (R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
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HOWTO (R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
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HOWTO (R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_DISP32", FALSE,0,0x00ffffff,TRUE),
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HOWTO (R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
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HOWTO (R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
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HOWTO (R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, 0,"R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
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HOWTO (R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_22", FALSE,0,0x003fffff,TRUE),
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HOWTO (R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_13", FALSE,0,0x00001fff,TRUE),
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HOWTO (R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, 0,"R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
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HOWTO (R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
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HOWTO (R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
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HOWTO (R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
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HOWTO (R_SPARC_PC10, 0,2,10,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
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HOWTO (R_SPARC_PC22, 0,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
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HOWTO (R_SPARC_WPLT30, 0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_WPLT30", FALSE,0,0x00000000,TRUE),
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HOWTO (R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
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HOWTO (R_SPARC_GLOB_DAT,0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
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HOWTO (R_SPARC_JMP_SLOT,0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
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HOWTO (R_SPARC_RELATIVE,0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
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HOWTO (R_SPARC_UA32, 0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_UA32", FALSE,0,0x00000000,TRUE),
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};
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/* Read a NetWare sparc reloc. */
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struct nlm32_sparc_reloc_ext
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{
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unsigned char offset[4];
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unsigned char addend[4];
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unsigned char type[1];
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unsigned char pad1[3];
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};
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static bfd_boolean
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nlm_sparc_read_reloc (bfd *abfd,
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nlmNAME (symbol_type) *sym ATTRIBUTE_UNUSED,
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asection **secp,
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arelent *rel)
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{
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bfd_vma val, addend;
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unsigned int howto_index;
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unsigned int type;
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struct nlm32_sparc_reloc_ext tmp_reloc;
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asection *code_sec, *data_sec;
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if (bfd_bread (&tmp_reloc, (bfd_size_type) 12, abfd) != 12)
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return FALSE;
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code_sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
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data_sec = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
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*secp = code_sec;
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val = bfd_get_32 (abfd, tmp_reloc.offset);
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addend = bfd_get_32 (abfd, tmp_reloc.addend);
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type = bfd_get_8 (abfd, tmp_reloc.type);
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rel->address = val;
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rel->addend = addend;
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rel->howto = NULL;
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for (howto_index = 0;
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howto_index < sizeof (nlm32_sparc_howto_table) / sizeof (reloc_howto_type);
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howto_index++)
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if (nlm32_sparc_howto_table[howto_index].type == type)
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{
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rel->howto = &nlm32_sparc_howto_table[howto_index];
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break;
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}
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#ifdef DEBUG
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fprintf (stderr, "%s: address = %08lx, addend = %08lx, type = %u, howto = %p\n",
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__FUNCTION__, (unsigned long) rel->address,
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(unsigned long) rel->addend, type, rel->howto);
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#endif
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return TRUE;
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}
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/* Write a NetWare sparc reloc. */
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static bfd_boolean
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nlm_sparc_write_reloc (bfd * abfd, asection * sec, arelent * rel)
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{
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bfd_vma val;
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struct nlm32_sparc_reloc_ext tmp_reloc;
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unsigned int howto_index;
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int type = -1;
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reloc_howto_type *tmp;
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for (howto_index = 0;
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howto_index < sizeof (nlm32_sparc_howto_table) / sizeof (reloc_howto_type);
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howto_index++)
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{
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tmp = &nlm32_sparc_howto_table[howto_index];
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if (tmp->rightshift == rel->howto->rightshift
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&& tmp->size == rel->howto->size
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&& tmp->bitsize == rel->howto->bitsize
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&& tmp->pc_relative == rel->howto->pc_relative
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&& tmp->bitpos == rel->howto->bitpos
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&& tmp->src_mask == rel->howto->src_mask
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&& tmp->dst_mask == rel->howto->dst_mask)
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{
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type = tmp->type;
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break;
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}
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}
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if (type == -1)
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abort ();
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/* Netware wants a list of relocs for each address.
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Format is:
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long offset
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long addend
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char type
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That should be it. */
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/* The value we write out is the offset into the appropriate
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segment. This offset is the section vma, adjusted by the vma of
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the lowest section in that segment, plus the address of the
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relocation. */
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val = bfd_get_section_vma (abfd, sec) + rel->address;
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#ifdef DEBUG
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fprintf (stderr, "%s: val = %08lx, addend = %08lx, type = %u\n",
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__FUNCTION__, (unsigned long) val, (unsigned long) rel->addend,
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rel->howto->type);
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#endif
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bfd_put_32 (abfd, val, tmp_reloc.offset);
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bfd_put_32 (abfd, rel->addend, tmp_reloc.addend);
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bfd_put_8 (abfd, (short) (rel->howto->type), tmp_reloc.type);
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if (bfd_bwrite (&tmp_reloc, (bfd_size_type) 12, abfd) != 12)
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return FALSE;
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return TRUE;
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}
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/* Mangle relocs for SPARC NetWare. We can just use the standard
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SPARC relocs. */
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static bfd_boolean
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nlm_sparc_mangle_relocs (bfd *abfd ATTRIBUTE_UNUSED,
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asection *sec ATTRIBUTE_UNUSED,
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const void * data ATTRIBUTE_UNUSED,
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bfd_vma offset ATTRIBUTE_UNUSED,
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bfd_size_type count ATTRIBUTE_UNUSED)
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{
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return TRUE;
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}
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/* Read a NetWare sparc import record. */
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static bfd_boolean
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nlm_sparc_read_import (bfd *abfd, nlmNAME (symbol_type) *sym)
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{
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struct nlm_relent *nlm_relocs; /* Relocation records for symbol. */
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bfd_size_type rcount; /* Number of relocs. */
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bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* Temporary 32-bit value. */
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unsigned char symlength; /* Length of symbol name. */
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char *name;
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/* First, read in the number of relocation
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entries for this symbol. */
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if (bfd_bread (temp, (bfd_size_type) 4, abfd) != 4)
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return FALSE;
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rcount = bfd_get_32 (abfd, temp);
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/* Next, read in the length of the symbol. */
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if (bfd_bread (& symlength, (bfd_size_type) sizeof (symlength), abfd)
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!= sizeof (symlength))
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return FALSE;
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sym -> symbol.the_bfd = abfd;
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name = bfd_alloc (abfd, (bfd_size_type) symlength + 1);
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if (name == NULL)
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return FALSE;
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/* Then read in the symbol. */
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if (bfd_bread (name, (bfd_size_type) symlength, abfd) != symlength)
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return FALSE;
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name[symlength] = '\0';
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sym -> symbol.name = name;
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sym -> symbol.flags = 0;
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sym -> symbol.value = 0;
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sym -> symbol.section = bfd_und_section_ptr;
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/* Next, start reading in the relocs. */
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nlm_relocs = bfd_alloc (abfd, rcount * sizeof (struct nlm_relent));
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if (!nlm_relocs)
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return FALSE;
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sym -> relocs = nlm_relocs;
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sym -> rcnt = 0;
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while (sym -> rcnt < rcount)
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{
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asection *section;
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if (! nlm_sparc_read_reloc (abfd, sym, §ion, &nlm_relocs -> reloc))
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return FALSE;
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nlm_relocs -> section = section;
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nlm_relocs++;
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sym -> rcnt++;
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}
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return TRUE;
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}
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static bfd_boolean
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nlm_sparc_write_import (bfd * abfd, asection * sec, arelent * rel)
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{
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char temp[4];
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asection *code, *data, *bss, *symsec;
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bfd_vma base;
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code = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
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data = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
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bss = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME);
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symsec = (*rel->sym_ptr_ptr)->section;
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if (symsec == code)
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base = 0;
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else if (symsec == data)
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base = code->size;
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else if (symsec == bss)
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base = code->size + data->size;
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else
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base = 0;
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#ifdef DEBUG
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fprintf (stderr, "%s: <%lx, 1>\n\t",
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__FUNCTION__, (unsigned long) (base + (*rel->sym_ptr_ptr)->value));
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#endif
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bfd_put_32 (abfd, base + (*rel->sym_ptr_ptr)->value, temp);
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if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4)
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return FALSE;
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bfd_put_32 (abfd, (bfd_vma) 1, temp);
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if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4)
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return FALSE;
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if (! nlm_sparc_write_reloc (abfd, sec, rel))
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return FALSE;
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return TRUE;
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}
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/* Write out an external reference. */
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static bfd_boolean
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nlm_sparc_write_external (bfd *abfd,
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bfd_size_type count,
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asymbol *sym,
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struct reloc_and_sec *relocs)
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{
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unsigned int i;
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bfd_byte len;
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unsigned char temp[NLM_TARGET_LONG_SIZE];
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bfd_put_32 (abfd, count, temp);
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if (bfd_bwrite (temp, (bfd_size_type) sizeof (temp), abfd) != sizeof (temp))
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return FALSE;
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len = strlen (sym->name);
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if ((bfd_bwrite (&len, (bfd_size_type) sizeof (bfd_byte), abfd)
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!= sizeof (bfd_byte))
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|| bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len)
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return FALSE;
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for (i = 0; i < count; i++)
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if (! nlm_sparc_write_reloc (abfd, relocs[i].sec, relocs[i].rel))
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return FALSE;
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return TRUE;
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}
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static bfd_boolean
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nlm_sparc_write_export (bfd * abfd, asymbol * sym, bfd_vma value)
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{
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bfd_byte len;
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bfd_byte temp[4];
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#ifdef DEBUG
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fprintf (stderr, "%s: <%lx, %u, %s>\n",
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__FUNCTION__, (unsigned long) value, strlen (sym->name), sym->name);
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#endif
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bfd_put_32 (abfd, value, temp);
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len = strlen (sym->name);
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if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4
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|| bfd_bwrite (&len, (bfd_size_type) 1, abfd) != 1
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|| bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len)
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return FALSE;
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return TRUE;
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}
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#undef nlm_swap_fixed_header_in
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#undef nlm_swap_fixed_header_out
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#include "nlmswap.h"
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static const struct nlm_backend_data nlm32_sparc_backend =
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{
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"NetWare SPARC Module \032",
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sizeof (Nlm32_sparc_External_Fixed_Header),
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0, /* Optional_prefix_size. */
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bfd_arch_sparc,
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0,
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FALSE,
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0, /* Backend_object_p. */
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0, /* Write_prefix_func. */
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nlm_sparc_read_reloc,
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nlm_sparc_mangle_relocs,
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nlm_sparc_read_import,
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nlm_sparc_write_import,
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0, /* Set_public_section. */
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0, /* Get_public_offset. */
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nlm_swap_fixed_header_in,
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nlm_swap_fixed_header_out,
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nlm_sparc_write_external,
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nlm_sparc_write_export
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};
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#define TARGET_BIG_NAME "nlm32-sparc"
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#define TARGET_BIG_SYM nlmNAME (sparc_vec)
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#define TARGET_BACKEND_DATA & nlm32_sparc_backend
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#include "nlm-target.h"
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