447 lines
13 KiB
C
447 lines
13 KiB
C
/* Support for 32-bit SPARC NLM (NetWare Loadable Module)
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Copyright (C) 1993 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 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#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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static boolean nlm_sparc_read_reloc
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PARAMS ((bfd *, nlmNAME(symbol_type) *, asection **, arelent *));
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static boolean nlm_sparc_write_reloc
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PARAMS ((bfd *, asection *, arelent *));
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static boolean nlm_sparc_mangle_relocs
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PARAMS ((bfd *, asection *, PTR, bfd_vma, bfd_size_type));
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static boolean nlm_sparc_read_import
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PARAMS ((bfd *, nlmNAME(symbol_type) *));
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static boolean nlm_sparc_write_import
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PARAMS ((bfd *, asection *, arelent *));
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static boolean nlm_sparc_write_external
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PARAMS ((bfd *, bfd_size_type, asymbol *, struct reloc_and_sec *));
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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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#if 0
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static CONST char *CONST reloc_type_names[] =
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{
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"R_SPARC_NONE",
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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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};
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#endif
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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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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 boolean
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nlm_sparc_read_reloc (abfd, sym, secp, rel)
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bfd *abfd;
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nlmNAME(symbol_type) *sym;
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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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int 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_read (&tmp_reloc, 12, 1, 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 (index = 0;
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index < sizeof(nlm32_sparc_howto_table) / sizeof(reloc_howto_type);
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index++)
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if (nlm32_sparc_howto_table[index].type == type) {
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rel->howto = &nlm32_sparc_howto_table[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 = %d, howto = %08lx\n",
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__FUNCTION__, rel->address, 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 boolean
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nlm_sparc_write_reloc (abfd, sec, rel)
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bfd *abfd;
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asection *sec;
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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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int index;
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int type = -1;
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reloc_howto_type *tmp;
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for (index = 0;
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index < sizeof (nlm32_sparc_howto_table) / sizeof(reloc_howto_type);
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index++) {
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tmp = &nlm32_sparc_howto_table[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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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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/*
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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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*/
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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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#if 0
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val = bfd_get_section_vma (abfd, (*rel->sym_ptr_ptr)->section) + rel->address;
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#else
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val = bfd_get_section_vma (abfd, sec) + rel->address;
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#endif
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#ifdef DEBUG
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fprintf (stderr, "%s: val = %08lx, addend = %08lx, type = %d\n",
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__FUNCTION__, val, rel->addend, 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_write (&tmp_reloc, 12, 1, abfd) != 12)
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{
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abort();
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}
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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 boolean
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nlm_sparc_mangle_relocs (abfd, sec, data, offset, count)
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bfd *abfd;
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asection *sec;
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PTR data;
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bfd_vma offset;
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bfd_size_type count;
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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 boolean
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nlm_sparc_read_import (abfd, sym)
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bfd *abfd;
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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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/*
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* First, read in the number of relocation
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* entries for this symbol
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*/
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if (bfd_read ((PTR) temp, 4, 1, abfd) != 4)
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return false;
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rcount = bfd_get_32 (abfd, temp);
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/*
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* Next, read in the length of the symbol
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*/
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if (bfd_read ((PTR) &symlength, sizeof (symlength), 1, 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, symlength + 1);
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if (name == NULL)
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{
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bfd_set_error (bfd_error_no_memory);
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return false;
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}
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/*
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* Then read in the symbol
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*/
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if (bfd_read (name, symlength, 1, 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;
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/*
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* Next, start reading in the relocs.
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*/
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nlm_relocs = ((struct nlm_relent *)
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bfd_alloc (abfd, rcount * sizeof (struct nlm_relent)));
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if (!nlm_relocs)
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{
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bfd_set_error (bfd_error_no_memory);
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return false;
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}
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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,
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&nlm_relocs -> reloc)
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== false)
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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 boolean
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nlm_sparc_write_import (abfd, sec, rel)
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bfd *abfd;
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asection *sec;
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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 = bfd_section_size (abfd, code);
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} else if (symsec == bss) {
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base = bfd_section_size (abfd, code) + bfd_section_size (abfd, data);
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} else
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base = 0;
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#ifdef DEBUG
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fprintf (stderr, "%s: <%x, 1>\n\t",
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__FUNCTION__, 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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bfd_write ((PTR)temp, 4, 1, abfd);
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bfd_put_32 (abfd, 1, temp);
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bfd_write ((PTR)temp, 4, 1, abfd);
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if (nlm_sparc_write_reloc (abfd, sec, rel) == false)
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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 boolean
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nlm_sparc_write_external (abfd, count, sym, relocs)
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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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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_write (temp, sizeof(temp), 1, abfd) != sizeof (temp))
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return false;
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len = strlen (sym->name);
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if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) != sizeof(bfd_byte))
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|| bfd_write (sym->name, len, 1, abfd) != len)
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return false;
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for (i = 0; i < count; i++)
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{
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if (nlm_sparc_write_reloc (abfd, relocs[i].sec,
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relocs[i].rel) == false)
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return false;
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}
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return true;
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}
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static boolean
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nlm_sparc_write_export (abfd, sym, value)
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bfd *abfd;
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asymbol *sym;
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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: <%x, %d, %s>\n",
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__FUNCTION__, 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_write (temp, 4, 1, abfd) != 4
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|| bfd_write (&len, 1, 1, abfd) != 1
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|| bfd_write (sym->name, len, 1, 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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