Ken Raeburn
32 years ago
13 changed files with 716 additions and 39 deletions
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/* BFD back-end for ns32k a.out-ish binaries.
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Copyright (C) 1990, 1991, 1992, 1994 Free Software Foundation, Inc. |
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Contributed by Ian Dall (idall@eleceng.adelaide.edu.au). |
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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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|
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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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|
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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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#define BYTES_IN_WORD 4 |
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#include "bfd.h" |
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#include "aout/aout64.h" |
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#define MYNS(OP) CAT(ns32kaout_,OP) |
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CONST struct reloc_howto_struct * |
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MYNS(bfd_reloc_type_lookup) |
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PARAMS((bfd *abfd AND |
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bfd_reloc_code_real_type code)); |
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boolean |
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MYNS(write_object_contents) |
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PARAMS((bfd *abfd)); |
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/* Avoid multiple definitions from aoutx if supporting standard a.out format(s)
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* as well as this one |
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*/ |
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#define NAME(x,y) CAT3(ns32kaout,_32_,y) |
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void bfd_ns32k_arch PARAMS ((void)); |
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long ns32k_get_displacement PARAMS ((bfd_byte *buffer, long offset, long size)); |
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int ns32k_put_displacement PARAMS ((long value, bfd_byte *buffer, long offset, long size)); |
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long ns32k_get_immediate PARAMS ((bfd_byte *buffer, long offset, long size)); |
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int ns32k_put_immediate PARAMS ((long value, bfd_byte *buffer, long offset, long size)); |
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bfd_reloc_status_type |
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ns32k_reloc_disp PARAMS ((bfd *abfd, arelent *reloc_entry, |
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struct symbol_cache_entry *symbol, |
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PTR data, |
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asection *input_section, |
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bfd *output_bfd, |
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char **error_message)); |
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bfd_reloc_status_type |
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ns32k_reloc_imm PARAMS ((bfd *abfd, |
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arelent *reloc_entry, |
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struct symbol_cache_entry *symbol, |
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PTR data, |
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asection *input_section, |
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bfd *output_bfd, |
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char **error_message)); |
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bfd_reloc_status_type |
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ns32k_final_link_relocate PARAMS ((reloc_howto_type *howto, |
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bfd *input_bfd, |
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asection *input_section, |
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bfd_byte *contents, |
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bfd_vma address, |
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bfd_vma value, |
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bfd_vma addend )); |
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bfd_reloc_status_type |
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ns32k_relocate_contents PARAMS ((reloc_howto_type *howto, |
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bfd *input_bfd, |
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bfd_vma relocation, |
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bfd_byte *location)); |
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#include "libaout.h" |
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#define MY(OP) MYNS(OP) |
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#define MY_swap_std_reloc_in MY(swap_std_reloc_in) |
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#define MY_swap_std_reloc_out MY(swap_std_reloc_out) |
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static void |
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MY_swap_std_reloc_in PARAMS ((bfd *abfd, struct reloc_std_external *bytes, |
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arelent *cache_ptr, asymbol **symbols)); |
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static void |
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MY_swap_std_reloc_out PARAMS ((bfd *abfd, arelent *g, |
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struct reloc_std_external *natptr)); |
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/* The ns32k series is ah, unusual, when it comes to relocation.
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* There are three storage methods for relocateable objects. There |
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* are displacements, immediate operands and ordinary twos complement |
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* data. Of these, only the last fits into the standard relocation |
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* scheme. Immediate operands are stored huffman encoded and |
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* immediate operands are stored big endian (where as the natural byte |
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* order is little endian for this achitecture). |
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* Note that the ns32k displacement storage method is orthogonal to |
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* whether the relocation is pc relative or not. The "displacement" |
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* storage scheme is used for essentially all address constants. The |
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* displacement can be relative to zero (absolute displacement), |
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* relative to the pc (pc relative), the stack pointer, the frame |
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* pointer, the static base register and general purpose register etc. |
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* For example: |
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* |
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* sym1: .long . # pc relative 2's complement |
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* sym1: .long foo # 2's complement not pc relative |
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* |
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* self: movd @self, r0 # pc relative displacement |
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* movd foo, r0 # non pc relative displacement |
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* |
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* self: movd self, r0 # pc relative immediate |
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* movd foo, r0 # non pc relative immediate |
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* |
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* In addition, for historical reasons the encoding of the relocation types |
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* in the a.out format relocation entries is such that even the relocation |
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* methods which are standard are not encoded the standard way. |
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* |
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*/ |
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reloc_howto_type MY(howto_table)[] = |
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{ |
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/* ns32k immediate operands */ |
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HOWTO(BFD_RELOC_NS32K_IMM_8, 0, 0, 8, false, 0, true, |
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ns32k_reloc_imm, "NS32K_IMM_8", |
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true, 0x000000ff,0x000000ff, false), |
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HOWTO(BFD_RELOC_NS32K_IMM_16, 0, 1, 16, false, 0, true, |
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ns32k_reloc_imm, "NS32K_IMM_16", |
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true, 0x0000ffff,0x0000ffff, false), |
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HOWTO(BFD_RELOC_NS32K_IMM_32, 0, 2, 32, false, 0, true, |
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ns32k_reloc_imm, "NS32K_IMM_32", |
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true, 0xffffffff,0xffffffff, false), |
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HOWTO(BFD_RELOC_NS32K_IMM_8_PCREL, 0, 0, 8, true, 0, false, |
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ns32k_reloc_imm, "PCREL_NS32K_IMM_8", |
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true, 0x000000ff, 0x000000ff, false), |
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HOWTO(BFD_RELOC_NS32K_IMM_16_PCREL, 0, 1, 16, true, 0, false, |
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ns32k_reloc_imm, "PCREL_NS32K_IMM_16", |
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true, 0x0000ffff,0x0000ffff, false), |
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HOWTO(BFD_RELOC_NS32K_IMM_32_PCREL, 0, 2, 32, true, 0, false, |
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ns32k_reloc_imm, "PCREL_NS32K_IMM_32", |
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true, 0xffffffff,0xffffffff, false), |
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/* ns32k displacements */ |
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HOWTO(BFD_RELOC_NS32K_DISP_8, 0, 0, 8, false, 0, true, |
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ns32k_reloc_disp, "NS32K_DISP_8", |
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true, 0x000000ff,0x000000ff, false), |
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HOWTO(BFD_RELOC_NS32K_DISP_16, 0, 1, 16, false, 0, true, |
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ns32k_reloc_disp, "NS32K_DISP_16", |
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true, 0x0000ffff, 0x0000ffff, false), |
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HOWTO(BFD_RELOC_NS32K_DISP_32, 0, 2, 32, false, 0, true, |
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ns32k_reloc_disp, "NS32K_DISP_32", |
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true, 0xffffffff, 0xffffffff, false), |
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HOWTO(BFD_RELOC_NS32K_DISP_8_PCREL, 0, 0, 8, true, 0, false, |
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ns32k_reloc_disp, "PCREL_NS32K_DISP_8", |
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true, 0x000000ff,0x000000ff, false), |
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HOWTO(BFD_RELOC_NS32K_DISP_16_PCREL, 0, 1, 16, true, 0, false, |
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ns32k_reloc_disp, "PCREL_NS32K_DISP_16", |
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true, 0x0000ffff,0x0000ffff, false), |
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HOWTO(BFD_RELOC_NS32K_DISP_32_PCREL, 0, 2, 32, true, 0, false, |
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ns32k_reloc_disp, "PCREL_NS32K_DISP_32", |
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true, 0xffffffff,0xffffffff, false), |
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/* Normal 2's complement */ |
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HOWTO(BFD_RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0, |
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"8", true, 0x000000ff,0x000000ff, false), |
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HOWTO(BFD_RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0, |
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"16", true, 0x0000ffff,0x0000ffff, false), |
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HOWTO(BFD_RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0, |
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"32", true, 0xffffffff,0xffffffff, false), |
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HOWTO(BFD_RELOC_8_PCREL, 0, 0, 8, true, 0, complain_overflow_signed, 0, |
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"PCREL_8", true, 0x000000ff,0x000000ff, false), |
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HOWTO(BFD_RELOC_16_PCREL, 0, 1, 16, true, 0, complain_overflow_signed, 0, |
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"PCREL_16", true, 0x0000ffff,0x0000ffff, false), |
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HOWTO(BFD_RELOC_32_PCREL, 0, 2, 32, true, 0, complain_overflow_signed, 0, |
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"PCREL_32", true, 0xffffffff,0xffffffff, false), |
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}; |
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#define RELOC_STD_BITS_NS32K_TYPE_BIG 0x06 |
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#define RELOC_STD_BITS_NS32K_TYPE_LITTLE 0x60 |
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#define RELOC_STD_BITS_NS32K_TYPE_SH_BIG 1 |
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#define RELOC_STD_BITS_NS32K_TYPE_SH_LITTLE 5 |
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reloc_howto_type * |
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MY(reloc_howto)(abfd, rel, r_index, r_extern, r_pcrel) |
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bfd *abfd; |
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struct reloc_std_external *rel; |
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int *r_index; |
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int *r_extern; |
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int *r_pcrel; |
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{ |
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unsigned int r_length; |
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int r_ns32k_type; |
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/* BFD_ASSERT(abfd->xvec->header_byteorder_big_p == false); */ |
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*r_index = ((rel->r_index[2] << 16) |
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| (rel->r_index[1] << 8) |
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| rel->r_index[0] ); |
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*r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); |
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*r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); |
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r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) |
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>> RELOC_STD_BITS_LENGTH_SH_LITTLE); |
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r_ns32k_type = ((rel->r_type[0] & RELOC_STD_BITS_NS32K_TYPE_LITTLE) |
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>> RELOC_STD_BITS_NS32K_TYPE_SH_LITTLE); |
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return (MY(howto_table) + r_length + 3 * (*r_pcrel) + 6 * r_ns32k_type); |
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} |
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#define MY_reloc_howto(BFD,REL,IN,EX,PC) MY(reloc_howto)(BFD, REL, &IN, &EX, &PC) |
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void |
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MY(put_reloc)(abfd, r_extern, r_index, value, howto, reloc) |
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bfd *abfd; |
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int r_extern; |
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int r_index; |
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long value; |
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reloc_howto_type *howto; |
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struct reloc_std_external *reloc; |
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{ |
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unsigned int r_length; |
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int r_pcrel; |
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int r_ns32k_type; |
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PUT_WORD (abfd, value, reloc->r_address); |
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r_length = howto->size ; /* Size as a power of two */ |
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r_pcrel = (int) howto->pc_relative; /* Relative to PC? */ |
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r_ns32k_type = (howto - MY(howto_table) )/6; |
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/* BFD_ASSERT (abfd->xvec->header_byteorder_big_p == false); */ |
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reloc->r_index[2] = r_index >> 16; |
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reloc->r_index[1] = r_index >> 8; |
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reloc->r_index[0] = r_index; |
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reloc->r_type[0] = |
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(r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) |
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| (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) |
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| (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE) |
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| (r_ns32k_type << RELOC_STD_BITS_NS32K_TYPE_SH_LITTLE); |
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} |
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#define MY_put_reloc(BFD, EXT, IDX, VAL, HOWTO, RELOC) \ |
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MY(put_reloc)(BFD, EXT, IDX, VAL, HOWTO, RELOC) |
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#define STAT_FOR_EXEC |
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#define MY_final_link_relocate ns32k_final_link_relocate |
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#define MY_relocate_contents ns32k_relocate_contents |
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#include <aoutx.h> |
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CONST struct reloc_howto_struct * |
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MY(bfd_reloc_type_lookup)(abfd,code) |
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bfd *abfd; |
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bfd_reloc_code_real_type code; |
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{ |
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#define ENTRY(i,j) case i: return &MY(howto_table)[j] |
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int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; |
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BFD_ASSERT(ext == 0); |
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if (code == BFD_RELOC_CTOR) |
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switch (bfd_get_arch_info (abfd)->bits_per_address) |
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{ |
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case 32: |
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code = BFD_RELOC_32; |
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break; |
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} |
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switch (code) |
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{ |
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ENTRY(BFD_RELOC_NS32K_IMM_8, 0); |
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ENTRY(BFD_RELOC_NS32K_IMM_16, 1); |
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ENTRY(BFD_RELOC_NS32K_IMM_32, 2); |
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ENTRY(BFD_RELOC_NS32K_IMM_8_PCREL, 3); |
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ENTRY(BFD_RELOC_NS32K_IMM_16_PCREL, 4); |
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ENTRY(BFD_RELOC_NS32K_IMM_32_PCREL, 5); |
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ENTRY(BFD_RELOC_NS32K_DISP_8, 6); |
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ENTRY(BFD_RELOC_NS32K_DISP_16, 7); |
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ENTRY(BFD_RELOC_NS32K_DISP_32, 8); |
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ENTRY(BFD_RELOC_NS32K_DISP_8_PCREL, 9); |
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ENTRY(BFD_RELOC_NS32K_DISP_16_PCREL, 10); |
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ENTRY(BFD_RELOC_NS32K_DISP_32_PCREL, 11); |
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ENTRY(BFD_RELOC_8, 12); |
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ENTRY(BFD_RELOC_16, 13); |
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ENTRY(BFD_RELOC_32, 14); |
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ENTRY(BFD_RELOC_8_PCREL, 15); |
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ENTRY(BFD_RELOC_16_PCREL, 16); |
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ENTRY(BFD_RELOC_32_PCREL, 17); |
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default: return (CONST struct reloc_howto_struct *) 0; |
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} |
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#undef ENTRY |
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} |
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static void |
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MY_swap_std_reloc_in (abfd, bytes, cache_ptr, symbols) |
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bfd *abfd; |
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struct reloc_std_external *bytes; |
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arelent *cache_ptr; |
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asymbol **symbols; |
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{ |
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int r_index; |
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int r_extern; |
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unsigned int r_length; |
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int r_pcrel; |
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int r_ns32k_type; |
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struct aoutdata *su = &(abfd->tdata.aout_data->a); |
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cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address); |
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/* now the fun stuff */ |
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cache_ptr->howto = MY_reloc_howto(abfd, bytes, r_index, r_extern, r_pcrel); |
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MOVE_ADDRESS(0); |
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} |
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static void |
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MY_swap_std_reloc_out (abfd, g, natptr) |
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bfd *abfd; |
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arelent *g; |
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struct reloc_std_external *natptr; |
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{ |
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int r_index; |
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asymbol *sym = *(g->sym_ptr_ptr); |
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int r_extern; |
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unsigned int r_length; |
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int r_pcrel; |
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int r_ns32k_type; |
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unsigned int r_addend; |
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asection *output_section = sym->section->output_section; |
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r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
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/* name was clobbered by aout_write_syms to be symbol index */ |
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/* If this relocation is relative to a symbol then set the
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r_index to the symbols index, and the r_extern bit. |
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Absolute symbols can come in in two ways, either as an offset |
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from the abs section, or as a symbol which has an abs value. |
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Check for that here. */ |
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if (bfd_is_com_section (output_section) |
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|| output_section == &bfd_abs_section |
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|| output_section == &bfd_und_section) |
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{ |
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if (bfd_abs_section.symbol == sym) |
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{ |
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/* Whoops, looked like an abs symbol, but is really an offset
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from the abs section */ |
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r_index = 0; |
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r_extern = 0; |
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} |
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else |
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{ |
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/* Fill in symbol */ |
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r_extern = 1; |
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#define KEEPIT flags |
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r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); |
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#undef KEEPIT |
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} |
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} |
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else |
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{ |
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/* Just an ordinary section */ |
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r_extern = 0; |
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r_index = output_section->target_index; |
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} |
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MY_put_reloc (abfd, r_extern, r_index, g->address, g->howto, natptr); |
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} |
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bfd_reloc_status_type |
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ns32k_relocate_contents (howto, input_bfd, relocation, location) |
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reloc_howto_type *howto; |
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bfd *input_bfd; |
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bfd_vma relocation; |
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bfd_byte *location; |
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{ |
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int r_ns32k_type = (howto - MY(howto_table)) / 6; |
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long (*get_data)(); |
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int (*put_data)(); |
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switch (r_ns32k_type) |
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{ |
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case 0: |
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get_data = ns32k_get_immediate; |
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put_data = ns32k_put_immediate; |
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break; |
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case 1: |
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get_data = ns32k_get_displacement; |
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put_data = ns32k_put_displacement; |
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break; |
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case 2: |
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return _bfd_relocate_contents (howto, input_bfd, relocation, |
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location); |
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/* NOT REACHED */ |
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break; |
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} |
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return do_ns32k_reloc_contents (howto, input_bfd, relocation, |
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location, get_data, put_data); |
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} |
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@ -0,0 +1,159 @@ |
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/* ARC-specific support for 32-bit ELF
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Copyright (C) 1994 Free Software Foundation, Inc. |
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Contributed by Doug Evans (dje@cygnus.com). |
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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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|
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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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#include "libelf.h" |
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static bfd_reloc_status_type arc_elf_unsupported_reloc |
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
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static const struct reloc_howto_struct *bfd_elf32_bfd_reloc_type_lookup |
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PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); |
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static void arc_info_to_howto |
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PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst)); |
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enum reloc_type |
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{ |
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R_ARC_NONE = 0, |
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R_ARC_ADDR32, |
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R_ARC_B22_PCREL, |
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R_ARC_max |
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}; |
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static reloc_howto_type elf_arc_howto_table[] = |
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{ |
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/* This reloc does nothing. */ |
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HOWTO (R_ARC_NONE, /* type */ |
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0, /* rightshift */ |
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2, /* size (0 = byte, 1 = short, 2 = long) */ |
|||
32, /* bitsize */ |
|||
false, /* pc_relative */ |
|||
0, /* bitpos */ |
|||
complain_overflow_bitfield, /* complain_on_overflow */ |
|||
bfd_elf_generic_reloc, /* special_function */ |
|||
"R_ARC_NONE", /* name */ |
|||
false, /* partial_inplace */ |
|||
0, /* src_mask */ |
|||
0, /* dst_mask */ |
|||
false), /* pcrel_offset */ |
|||
|
|||
/* A standard 32 bit relocation. */ |
|||
HOWTO (R_ARC_ADDR32, /* type */ |
|||
0, /* rightshift */ |
|||
2, /* size (0 = byte, 1 = short, 2 = long) */ |
|||
32, /* bitsize */ |
|||
false, /* pc_relative */ |
|||
0, /* bitpos */ |
|||
complain_overflow_bitfield, /* complain_on_overflow */ |
|||
bfd_elf_generic_reloc, /* special_function */ |
|||
"R_ARC_ADDR32", /* name */ |
|||
false, /* partial_inplace */ |
|||
0, /* src_mask */ |
|||
0xffffffff, /* dst_mask */ |
|||
false), /* pcrel_offset */ |
|||
|
|||
/* A relative 22 bit branch; the lower two bits must be zero. */ |
|||
HOWTO (R_ARC_B22_PCREL, /* type */ |
|||
2, /* rightshift */ |
|||
2, /* size (0 = byte, 1 = short, 2 = long) */ |
|||
22, /* bitsize */ |
|||
true, /* pc_relative */ |
|||
7, /* bitpos */ |
|||
complain_overflow_signed, /* complain_on_overflow */ |
|||
bfd_elf_generic_reloc, /* special_function */ |
|||
"R_ARC_B22_PCREL", /* name */ |
|||
false, /* partial_inplace */ |
|||
0, /* src_mask */ |
|||
0x07ffff80, /* dst_mask */ |
|||
true), /* pcrel_offset */ |
|||
|
|||
}; |
|||
|
|||
/* Don't pretend we can deal with unsupported relocs. */ |
|||
|
|||
static bfd_reloc_status_type |
|||
arc_elf_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section, |
|||
output_bfd, error_message) |
|||
bfd *abfd; |
|||
arelent *reloc_entry; |
|||
asymbol *symbol; |
|||
PTR data; |
|||
asection *input_section; |
|||
bfd *output_bfd; |
|||
char **error_message; |
|||
{ |
|||
abort (); |
|||
} |
|||
|
|||
/* Map BFD reloc types to PowerPC ELF reloc types. */ |
|||
|
|||
struct arc_reloc_map |
|||
{ |
|||
unsigned char bfd_reloc_val; |
|||
unsigned char elf_reloc_val; |
|||
}; |
|||
|
|||
static const struct arc_reloc_map arc_reloc_map[] = |
|||
{ |
|||
{ BFD_RELOC_NONE, R_ARC_NONE, }, |
|||
{ BFD_RELOC_32, R_ARC_ADDR32 }, |
|||
{ BFD_RELOC_CTOR, R_ARC_ADDR32 }, |
|||
{ BFD_RELOC_ARC_B22_PCREL, R_ARC_B22_PCREL }, |
|||
}; |
|||
|
|||
static const struct reloc_howto_struct * |
|||
bfd_elf32_bfd_reloc_type_lookup (abfd, code) |
|||
bfd *abfd; |
|||
bfd_reloc_code_real_type code; |
|||
{ |
|||
int i; |
|||
|
|||
for (i = 0; |
|||
i < sizeof (arc_reloc_map) / sizeof (struct arc_reloc_map); |
|||
i++) |
|||
{ |
|||
if (arc_reloc_map[i].bfd_reloc_val == code) |
|||
return &elf_arc_howto_table[arc_reloc_map[i].elf_reloc_val]; |
|||
} |
|||
|
|||
return NULL; |
|||
} |
|||
|
|||
/* Set the howto pointer for an ARC ELF reloc. */ |
|||
|
|||
static void |
|||
arc_info_to_howto (abfd, cache_ptr, dst) |
|||
bfd *abfd; |
|||
arelent *cache_ptr; |
|||
Elf32_Internal_Rela *dst; |
|||
{ |
|||
BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_ARC_max); |
|||
cache_ptr->howto = &elf_arc_howto_table[ELF32_R_TYPE (dst->r_info)]; |
|||
} |
|||
|
|||
#define TARGET_BIG_SYM bfd_elf32_arc_vec |
|||
#define TARGET_BIG_NAME "elf32-arc" |
|||
#define ELF_ARCH bfd_arch_arc |
|||
#define ELF_MACHINE_CODE EM_CYGNUS_ARC |
|||
#define ELF_MAXPAGESIZE 0x10000 |
|||
#define elf_info_to_howto arc_info_to_howto |
|||
|
|||
#include "elf32-target.h" |
|||
Loading…
Reference in new issue