* configure.in: i386lynx_coff_vec requires coff-i386lynx.o.
* coff-i386lynx.c: New file, defines Lynx target vector and name, includes coff-i386.c. * coff-i386.c (i386coff_vec): Allow redefinition of target vector symbol and name, if TARGET_SYM and/or TARGET_NAME are defined. * i386lynx.c: Remove coff vector definition entirely. (lynx_32_swap_ext_reloc_in): Define. (lynx_32_swap_std_reloc_in): Define, get reloc bits in i386 Lynx-specific way. (lynx_32_swap_ext_reloc_out): Define. (lynx_32_swap_std_reloc_out): Define. (lynx_32_slurp_reloc_table): Define, call Lynx swapping fns. (lynx_32_squirt_out_relocs): Define, call Lynx swapping fns. (lynx_32_canonicalize_reloc): Define, call Lynx swapping fns. (WRITE_HEADERS): Define, call Lynx swapping fns. * config/i386-lynx.mt (SELECT_VECS): Remove redundant vector.
This commit is contained in:
Stan Shebs
parent
7f9ae73e76
commit
48ee075741
6 changed files with 870 additions and 34 deletions
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@ -54,6 +54,7 @@ coff-alpha.c
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coff-h8300.c
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coff-h8500.c
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coff-i386.c
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coff-i386lynx.c
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coff-i960.c
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coff-m68k.c
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coff-m88k.c
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@ -1,9 +1,38 @@
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Fri Oct 1 13:14:17 1993 Stan Shebs (shebs@rtl.cygnus.com)
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* configure.in: i386lynx_coff_vec requires coff-i386lynx.o.
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* coff-i386lynx.c: New file, defines Lynx target vector and name,
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includes coff-i386.c.
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* coff-i386.c (i386coff_vec): Allow redefinition of target vector
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symbol and name, if TARGET_SYM and/or TARGET_NAME are defined.
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* i386lynx.c: Remove coff vector definition entirely.
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(lynx_32_swap_ext_reloc_in): Define.
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(lynx_32_swap_std_reloc_in): Define, get reloc bits in i386
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Lynx-specific way.
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(lynx_32_swap_ext_reloc_out): Define.
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(lynx_32_swap_std_reloc_out): Define.
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(lynx_32_slurp_reloc_table): Define, call Lynx swapping fns.
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(lynx_32_squirt_out_relocs): Define, call Lynx swapping fns.
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(lynx_32_canonicalize_reloc): Define, call Lynx swapping fns.
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(WRITE_HEADERS): Define, call Lynx swapping fns.
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* config/i386-lynx.mt (SELECT_VECS): Remove redundant vector.
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Thu Sep 30 17:50:52 1993 Ken Raeburn (raeburn@cambridge.cygnus.com)
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* reloc.c (bfd_reloc_code_type): Add linkage-table relative
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relocations of size 8, 16, 32. Sort generic relocs by type rather
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than size. Added a little documentation too.
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* aoutx.h (howto_table_std): Add BASE16 and BASE32 relocs.
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(TABLE_SIZE): New macro.
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(reloc_type_lookup): Handle BFD_RELOC_{16,32}_BASEREL for std
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relocs.
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(swap_std_reloc_out): Write baserel relocs correctly.
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(swap_std_reloc_in): Handle r_baserel field. Assert that
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r_jmptable and r_relative fields are clear, and that the computed
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index does refer to a defined entry of the howto table.
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Tue Sep 28 14:47:46 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
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* section.c (bfd_make_section_anyway): New function.
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292
bfd/coff-i386.c
292
bfd/coff-i386.c
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@ -1,5 +1,5 @@
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/* BFD back-end for Intel 386 COFF files.
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Copyright (C) 1990-1991 Free Software Foundation, Inc.
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Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
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Written by Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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@ -26,30 +26,210 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "coff/internal.h"
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#include "libcoff.h"
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static bfd_reloc_status_type coff_i386_reloc PARAMS ((bfd *abfd,
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arelent *reloc_entry,
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asymbol *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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/* For some reason when using i386 COFF the value stored in the .text
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section for a reference to a common symbol is the value itself plus
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any desired offset. Ian Taylor, Cygnus Support. */
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/* If we are producing relocateable output, we need to do some
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adjustments to the object file that are not done by the
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bfd_perform_relocation function. This function is called by every
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reloc type to make any required adjustments. */
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static bfd_reloc_status_type
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coff_i386_reloc (abfd, reloc_entry, symbol, data, input_section, output_bfd)
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bfd *abfd;
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arelent *reloc_entry;
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asymbol *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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{
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symvalue diff;
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if (output_bfd == (bfd *) NULL)
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return bfd_reloc_continue;
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if (bfd_is_com_section (symbol->section))
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{
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/* We are relocating a common symbol. The current value in the
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object file is ORIG + OFFSET, where ORIG is the value of the
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common symbol as seen by the object file when it was compiled
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(this may be zero if the symbol was undefined) and OFFSET is
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the offset into the common symbol (normally zero, but may be
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non-zero when referring to a field in a common structure).
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ORIG is the negative of reloc_entry->addend, which is set by
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the CALC_ADDEND macro below. We want to replace the value in
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the object file with NEW + OFFSET, where NEW is the value of
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the common symbol which we are going to put in the final
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object file. NEW is symbol->value. */
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diff = symbol->value + reloc_entry->addend;
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}
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else
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{
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/* For some reason bfd_perform_relocation always effectively
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ignores the addend for a COFF target when producing
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relocateable output. This seems to be always wrong for 386
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COFF, so we handle the addend here instead. */
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diff = reloc_entry->addend;
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}
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#define DOIT(x) \
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x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask))
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if (diff != 0)
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{
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reloc_howto_type *howto = reloc_entry->howto;
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unsigned char *addr = (unsigned char *) data + reloc_entry->address;
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switch (howto->size)
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{
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case 0:
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{
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char x = bfd_get_8 (abfd, addr);
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DOIT (x);
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bfd_put_8 (abfd, x, addr);
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}
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break;
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case 1:
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{
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short x = bfd_get_16 (abfd, addr);
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DOIT (x);
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bfd_put_16 (abfd, x, addr);
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}
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break;
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case 2:
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{
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long x = bfd_get_32 (abfd, addr);
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DOIT (x);
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bfd_put_32 (abfd, x, addr);
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}
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break;
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default:
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abort ();
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}
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}
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/* Now let bfd_perform_relocation finish everything up. */
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return bfd_reloc_continue;
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}
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static reloc_howto_type howto_table[] =
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{
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{0},
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{1},
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{2},
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{3},
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{4},
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{5},
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HOWTO(R_DIR32, 0, 2, 32, false, 0, true,true,0,"dir32", true, 0xffffffff,0xffffffff, false),
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{7},
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{010},
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{011},
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{012},
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{013},
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{014},
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{015},
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{016},
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HOWTO(R_RELBYTE, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff,0x000000ff, false),
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HOWTO(R_RELWORD, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff,0x0000ffff, false),
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HOWTO(R_RELLONG, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff,0xffffffff, false),
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HOWTO(R_PCRBYTE, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff,0x000000ff, false),
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HOWTO(R_PCRWORD, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff,0x0000ffff, false),
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HOWTO(R_PCRLONG, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff,0xffffffff, false),
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{0},
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{1},
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{2},
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{3},
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{4},
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{5},
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HOWTO (R_DIR32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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coff_i386_reloc, /* special_function */
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"dir32", /* name */
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true, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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{7},
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{010},
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{011},
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{012},
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{013},
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{014},
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{015},
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{016},
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HOWTO (R_RELBYTE, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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coff_i386_reloc, /* special_function */
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"8", /* name */
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true, /* partial_inplace */
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0x000000ff, /* src_mask */
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0x000000ff, /* dst_mask */
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false), /* pcrel_offset */
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HOWTO (R_RELWORD, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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coff_i386_reloc, /* special_function */
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"16", /* name */
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true, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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false), /* pcrel_offset */
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HOWTO (R_RELLONG, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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coff_i386_reloc, /* special_function */
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"32", /* name */
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true, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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HOWTO (R_PCRBYTE, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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coff_i386_reloc, /* special_function */
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"DISP8", /* name */
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true, /* partial_inplace */
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0x000000ff, /* src_mask */
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0x000000ff, /* dst_mask */
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false), /* pcrel_offset */
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HOWTO (R_PCRWORD, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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coff_i386_reloc, /* special_function */
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"DISP16", /* name */
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true, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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false), /* pcrel_offset */
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HOWTO (R_PCRLONG, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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coff_i386_reloc, /* special_function */
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"DISP32", /* name */
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true, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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false) /* pcrel_offset */
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};
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/* Turn a howto into a reloc nunmber */
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@ -61,17 +241,67 @@ static reloc_howto_type howto_table[] =
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#define RTYPE2HOWTO(cache_ptr, dst) \
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cache_ptr->howto = howto_table + (dst)->r_type;
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#include "coffcode.h"
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/* On SCO Unix 3.2.2 the native assembler generates two .data
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sections. We handle that by renaming the second one to .data2. It
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does no harm to do this for any 386 COFF target. */
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#define TWO_DATA_SECS
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#define coff_write_armap bsd_write_armap
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/* For 386 COFF a STYP_NOLOAD | STYP_BSS section is part of a shared
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library. On some other COFF targets STYP_BSS is normally
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STYP_NOLOAD. */
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#define BSS_NOLOAD_IS_SHARED_LIBRARY
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||||
/* Compute the addend of a reloc. If the reloc is to a common symbol,
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the object file contains the value of the common symbol. By the
|
||||
time this is called, the linker may be using a different symbol
|
||||
from a different object file with a different value. Therefore, we
|
||||
hack wildly to locate the original symbol from this file so that we
|
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can make the correct adjustment. This macro sets coffsym to the
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symbol from the original file, and uses it to set the addend value
|
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correctly. If this is not a common symbol, the usual addend
|
||||
calculation is done, except that an additional tweak is needed for
|
||||
PC relative relocs.
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FIXME: This macro refers to symbols and asect; these are from the
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calling function, not the macro arguments. */
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#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
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{ \
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coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
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if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
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coffsym = (obj_symbols (abfd) \
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+ (cache_ptr->sym_ptr_ptr - symbols)); \
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else if (ptr) \
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coffsym = coff_symbol_from (abfd, ptr); \
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if (coffsym != (coff_symbol_type *) NULL \
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&& coffsym->native->u.syment.n_scnum == 0) \
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cache_ptr->addend = - coffsym->native->u.syment.n_value; \
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else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
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&& ptr->section != (asection *) NULL) \
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cache_ptr->addend = - (ptr->section->vma + ptr->value); \
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else \
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cache_ptr->addend = 0; \
|
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if (ptr && howto_table[reloc.r_type].pc_relative) \
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cache_ptr->addend += asect->vma; \
|
||||
}
|
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|
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#include "coffcode.h"
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bfd_target *i3coff_object_p(a)
|
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bfd *a ;
|
||||
{ return coff_object_p(a); }
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||||
|
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bfd_target i386coff_vec =
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bfd_target
|
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#ifdef TARGET_SYM
|
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TARGET_SYM =
|
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#else
|
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i386coff_vec =
|
||||
#endif
|
||||
{
|
||||
#ifdef TARGET_NAME
|
||||
TARGET_NAME,
|
||||
#else
|
||||
"coff-i386", /* name */
|
||||
#endif
|
||||
bfd_target_coff_flavour,
|
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false, /* data byte order is little */
|
||||
false, /* header byte order is little */
|
||||
|
|
@ -86,8 +316,12 @@ bfd_target i386coff_vec =
|
|||
15, /* ar_max_namelen */
|
||||
|
||||
2, /* minimum alignment power */
|
||||
_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
|
||||
_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
|
||||
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
||||
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
||||
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
||||
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
||||
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
||||
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
|
||||
|
||||
/* Note that we allow an object file to be treated as a core file as well. */
|
||||
{_bfd_dummy_target, i3coff_object_p, /* bfd_check_format */
|
||||
|
|
@ -98,5 +332,5 @@ bfd_target i386coff_vec =
|
|||
_bfd_write_archive_contents, bfd_false},
|
||||
|
||||
JUMP_TABLE(coff),
|
||||
COFF_SWAP_TABLE
|
||||
};
|
||||
COFF_SWAP_TABLE,
|
||||
};
|
||||
|
|
|
|||
24
bfd/coff-i386lynx.c
Normal file
24
bfd/coff-i386lynx.c
Normal file
|
|
@ -0,0 +1,24 @@
|
|||
/* BFD back-end for Intel 386 COFF LynxOS files.
|
||||
Copyright 1993 Free Software Foundation, Inc.
|
||||
Written by Cygnus Support.
|
||||
|
||||
This file is part of BFD, the Binary File Descriptor library.
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||||
|
||||
#define TARGET_SYM i386lynx_coff_vec
|
||||
#define TARGET_NAME "coff-i386-lynx"
|
||||
|
||||
#include "coff-i386.c"
|
||||
|
|
@ -51,10 +51,6 @@ for targ in $target $canon_targets
|
|||
do
|
||||
bfd_target=`$srcdir/config.bfd $targ`
|
||||
|
||||
case "$targ" in
|
||||
netbsd386) bfd_target=i386-netbsd ;;
|
||||
esac
|
||||
|
||||
if [ "x$bfd_target" = "xall" ]; then
|
||||
all_targets=true
|
||||
else
|
||||
|
|
@ -179,12 +175,15 @@ do
|
|||
netbsd386_vec) tb="$tb netbsd386.o aout32.o stab-syms.o" ;;
|
||||
i386coff_vec) tb="$tb coff-i386.o" ;;
|
||||
i386linux_vec) tb="$tb i386linux.o aout32.o stab-syms.o" ;;
|
||||
i386lynx_vec) tb="$tb i386lynx.o aout32.o stab-syms.o" ;;
|
||||
i386lynx_aout_vec) tb="$tb i386lynx.o lynx-core.o aout32.o stab-syms.o" ;;
|
||||
i386lynx_coff_vec) tb="$tb coff-i386lynx.o lynx-core.o stab-syms.o" ;;
|
||||
icoff_big_vec) tb="$tb coff-i960.o" ;;
|
||||
icoff_little_vec) tb="$tb coff-i960.o" ;;
|
||||
ieee_vec) tb="$tb ieee.o" ;;
|
||||
m68kcoff_vec) tb="$tb coff-m68k.o" ;;
|
||||
m68kcoffun_vec) tb="$tb coff-u68k.o coff-m68k.o" ;;
|
||||
m68klynx_aout_vec) tb="$tb m68klynx.o lynx-core.o aout32.o stab-syms.o" ;;
|
||||
m68klynx_coff_vec) tb="$tb m68klynx.o lynx-core.o aout32.o stab-syms.o" ;;
|
||||
m88kbcs_vec) tb="$tb coff-m88k.o" ;;
|
||||
newsos3_vec) tb="$tb newsos3.o aout32.o stab-syms.o" ;;
|
||||
nlm32_big_generic_vec) tb="$tb nlm32-gen.o nlm32.o nlm.o" ;;
|
||||
|
|
|
|||
549
bfd/i386lynx.c
Normal file
549
bfd/i386lynx.c
Normal file
|
|
@ -0,0 +1,549 @@
|
|||
/* BFD back-end for i386 a.out binaries under Lynx.
|
||||
Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of BFD, the Binary File Descriptor library.
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||||
|
||||
#define BYTES_IN_WORD 4
|
||||
#define ARCH 32
|
||||
#define N_SHARED_LIB(x) 0
|
||||
|
||||
#define TEXT_START_ADDR 0
|
||||
#define PAGE_SIZE 4096
|
||||
#define SEGMENT_SIZE PAGE_SIZE
|
||||
#define DEFAULT_ARCH bfd_arch_i386
|
||||
|
||||
#define MY(OP) CAT(i386lynx_aout_,OP)
|
||||
#define TARGETNAME "a.out-i386-lynx"
|
||||
|
||||
#include "bfd.h"
|
||||
#include "sysdep.h"
|
||||
#include "libbfd.h"
|
||||
|
||||
#ifndef WRITE_HEADERS
|
||||
#define WRITE_HEADERS(abfd, execp) \
|
||||
{ \
|
||||
bfd_size_type text_size; /* dummy vars */ \
|
||||
file_ptr text_end; \
|
||||
if (adata(abfd).magic == undecided_magic) \
|
||||
NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); \
|
||||
\
|
||||
execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
|
||||
execp->a_entry = bfd_get_start_address (abfd); \
|
||||
\
|
||||
execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \
|
||||
obj_reloc_entry_size (abfd)); \
|
||||
execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \
|
||||
obj_reloc_entry_size (abfd)); \
|
||||
NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \
|
||||
\
|
||||
bfd_seek (abfd, (file_ptr) 0, SEEK_SET); \
|
||||
bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd); \
|
||||
/* Now write out reloc info, followed by syms and strings */ \
|
||||
\
|
||||
if (bfd_get_symcount (abfd) != 0) \
|
||||
{ \
|
||||
bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET); \
|
||||
\
|
||||
NAME(aout,write_syms)(abfd); \
|
||||
\
|
||||
bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET); \
|
||||
\
|
||||
if (!NAME(lynx,squirt_out_relocs) (abfd, obj_textsec (abfd))) return false; \
|
||||
bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET); \
|
||||
\
|
||||
if (!NAME(lynx,squirt_out_relocs)(abfd, obj_datasec (abfd))) return false; \
|
||||
} \
|
||||
}
|
||||
#endif
|
||||
|
||||
#include "libaout.h"
|
||||
#include "aout/aout64.h"
|
||||
|
||||
#ifdef HOST_LYNX
|
||||
|
||||
char *lynx_core_file_failing_command();
|
||||
int lynx_core_file_failing_signal();
|
||||
boolean lynx_core_file_matches_executable_p();
|
||||
bfd_target *lynx_core_file_p();
|
||||
|
||||
#define MY_core_file_failing_command lynx_core_file_failing_command
|
||||
#define MY_core_file_failing_signal lynx_core_file_failing_signal
|
||||
#define MY_core_file_matches_executable_p lynx_core_file_matches_executable_p
|
||||
#define MY_core_file_p lynx_core_file_p
|
||||
|
||||
#endif /* HOST_LYNX */
|
||||
|
||||
|
||||
#define KEEPIT flags
|
||||
|
||||
extern reloc_howto_type aout_32_ext_howto_table[];
|
||||
extern reloc_howto_type aout_32_std_howto_table[];
|
||||
|
||||
/* Standard reloc stuff */
|
||||
/* Output standard relocation information to a file in target byte order. */
|
||||
|
||||
void
|
||||
DEFUN(NAME(lynx,swap_std_reloc_out),(abfd, g, natptr),
|
||||
bfd *abfd AND
|
||||
arelent *g AND
|
||||
struct reloc_std_external *natptr)
|
||||
{
|
||||
int r_index;
|
||||
asymbol *sym = *(g->sym_ptr_ptr);
|
||||
int r_extern;
|
||||
unsigned int r_length;
|
||||
int r_pcrel;
|
||||
int r_baserel, r_jmptable, r_relative;
|
||||
unsigned int r_addend;
|
||||
asection *output_section = sym->section->output_section;
|
||||
|
||||
PUT_WORD(abfd, g->address, natptr->r_address);
|
||||
|
||||
r_length = g->howto->size ; /* Size as a power of two */
|
||||
r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
|
||||
/* r_baserel, r_jmptable, r_relative??? FIXME-soon */
|
||||
r_baserel = 0;
|
||||
r_jmptable = 0;
|
||||
r_relative = 0;
|
||||
|
||||
r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
|
||||
|
||||
/* name was clobbered by aout_write_syms to be symbol index */
|
||||
|
||||
/* If this relocation is relative to a symbol then set the
|
||||
r_index to the symbols index, and the r_extern bit.
|
||||
|
||||
Absolute symbols can come in in two ways, either as an offset
|
||||
from the abs section, or as a symbol which has an abs value.
|
||||
check for that here
|
||||
*/
|
||||
|
||||
|
||||
if (bfd_is_com_section (output_section)
|
||||
|| output_section == &bfd_abs_section
|
||||
|| output_section == &bfd_und_section)
|
||||
{
|
||||
if (bfd_abs_section.symbol == sym)
|
||||
{
|
||||
/* Whoops, looked like an abs symbol, but is really an offset
|
||||
from the abs section */
|
||||
r_index = 0;
|
||||
r_extern = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Fill in symbol */
|
||||
r_extern = 1;
|
||||
r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT);
|
||||
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Just an ordinary section */
|
||||
r_extern = 0;
|
||||
r_index = output_section->target_index;
|
||||
}
|
||||
|
||||
/* now the fun stuff */
|
||||
if (abfd->xvec->header_byteorder_big_p != false) {
|
||||
natptr->r_index[0] = r_index >> 16;
|
||||
natptr->r_index[1] = r_index >> 8;
|
||||
natptr->r_index[2] = r_index;
|
||||
natptr->r_type[0] =
|
||||
(r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
|
||||
| (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
|
||||
| (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
|
||||
| (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
|
||||
| (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
|
||||
| (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
|
||||
} else {
|
||||
natptr->r_index[2] = r_index >> 16;
|
||||
natptr->r_index[1] = r_index >> 8;
|
||||
natptr->r_index[0] = r_index;
|
||||
natptr->r_type[0] =
|
||||
(r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
|
||||
| (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
|
||||
| (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0)
|
||||
| (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0)
|
||||
| (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0)
|
||||
| (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* Extended stuff */
|
||||
/* Output extended relocation information to a file in target byte order. */
|
||||
|
||||
void
|
||||
DEFUN(NAME(lynx,swap_ext_reloc_out),(abfd, g, natptr),
|
||||
bfd *abfd AND
|
||||
arelent *g AND
|
||||
register struct reloc_ext_external *natptr)
|
||||
{
|
||||
int r_index;
|
||||
int r_extern;
|
||||
unsigned int r_type;
|
||||
unsigned int r_addend;
|
||||
asymbol *sym = *(g->sym_ptr_ptr);
|
||||
asection *output_section = sym->section->output_section;
|
||||
|
||||
PUT_WORD (abfd, g->address, natptr->r_address);
|
||||
|
||||
r_type = (unsigned int) g->howto->type;
|
||||
|
||||
r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
|
||||
|
||||
|
||||
/* If this relocation is relative to a symbol then set the
|
||||
r_index to the symbols index, and the r_extern bit.
|
||||
|
||||
Absolute symbols can come in in two ways, either as an offset
|
||||
from the abs section, or as a symbol which has an abs value.
|
||||
check for that here
|
||||
*/
|
||||
|
||||
if (bfd_is_com_section (output_section)
|
||||
|| output_section == &bfd_abs_section
|
||||
|| output_section == &bfd_und_section)
|
||||
{
|
||||
if (bfd_abs_section.symbol == sym)
|
||||
{
|
||||
/* Whoops, looked like an abs symbol, but is really an offset
|
||||
from the abs section */
|
||||
r_index = 0;
|
||||
r_extern = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
r_extern = 1;
|
||||
r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Just an ordinary section */
|
||||
r_extern = 0;
|
||||
r_index = output_section->target_index;
|
||||
}
|
||||
|
||||
|
||||
/* now the fun stuff */
|
||||
if (abfd->xvec->header_byteorder_big_p != false) {
|
||||
natptr->r_index[0] = r_index >> 16;
|
||||
natptr->r_index[1] = r_index >> 8;
|
||||
natptr->r_index[2] = r_index;
|
||||
natptr->r_type[0] =
|
||||
(r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
|
||||
| (r_type << RELOC_EXT_BITS_TYPE_SH_BIG);
|
||||
} else {
|
||||
natptr->r_index[2] = r_index >> 16;
|
||||
natptr->r_index[1] = r_index >> 8;
|
||||
natptr->r_index[0] = r_index;
|
||||
natptr->r_type[0] =
|
||||
(r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
|
||||
| (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
|
||||
}
|
||||
|
||||
PUT_WORD (abfd, r_addend, natptr->r_addend);
|
||||
}
|
||||
|
||||
/* BFD deals internally with all things based from the section they're
|
||||
in. so, something in 10 bytes into a text section with a base of
|
||||
50 would have a symbol (.text+10) and know .text vma was 50.
|
||||
|
||||
Aout keeps all it's symbols based from zero, so the symbol would
|
||||
contain 60. This macro subs the base of each section from the value
|
||||
to give the true offset from the section */
|
||||
|
||||
|
||||
#define MOVE_ADDRESS(ad) \
|
||||
if (r_extern) { \
|
||||
/* undefined symbol */ \
|
||||
cache_ptr->sym_ptr_ptr = symbols + r_index; \
|
||||
cache_ptr->addend = ad; \
|
||||
} else { \
|
||||
/* defined, section relative. replace symbol with pointer to \
|
||||
symbol which points to section */ \
|
||||
switch (r_index) { \
|
||||
case N_TEXT: \
|
||||
case N_TEXT | N_EXT: \
|
||||
cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
|
||||
cache_ptr->addend = ad - su->textsec->vma; \
|
||||
break; \
|
||||
case N_DATA: \
|
||||
case N_DATA | N_EXT: \
|
||||
cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
|
||||
cache_ptr->addend = ad - su->datasec->vma; \
|
||||
break; \
|
||||
case N_BSS: \
|
||||
case N_BSS | N_EXT: \
|
||||
cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
|
||||
cache_ptr->addend = ad - su->bsssec->vma; \
|
||||
break; \
|
||||
default: \
|
||||
case N_ABS: \
|
||||
case N_ABS | N_EXT: \
|
||||
cache_ptr->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr; \
|
||||
cache_ptr->addend = ad; \
|
||||
break; \
|
||||
} \
|
||||
} \
|
||||
|
||||
void
|
||||
DEFUN(NAME(lynx,swap_ext_reloc_in), (abfd, bytes, cache_ptr, symbols),
|
||||
bfd *abfd AND
|
||||
struct reloc_ext_external *bytes AND
|
||||
arelent *cache_ptr AND
|
||||
asymbol **symbols)
|
||||
{
|
||||
int r_index;
|
||||
int r_extern;
|
||||
unsigned int r_type;
|
||||
struct aoutdata *su = &(abfd->tdata.aout_data->a);
|
||||
|
||||
cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
|
||||
|
||||
/* now the fun stuff */
|
||||
if (1 /* abfd->xvec->header_byteorder_big_p != false */) {
|
||||
r_index = (bytes->r_index[0] << 16)
|
||||
| (bytes->r_index[1] << 8)
|
||||
| bytes->r_index[2];
|
||||
r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
|
||||
r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
|
||||
>> RELOC_EXT_BITS_TYPE_SH_BIG;
|
||||
} else {
|
||||
r_index = (bytes->r_index[2] << 16)
|
||||
| (bytes->r_index[1] << 8)
|
||||
| bytes->r_index[0];
|
||||
r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
|
||||
r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
|
||||
>> RELOC_EXT_BITS_TYPE_SH_LITTLE;
|
||||
}
|
||||
|
||||
cache_ptr->howto = aout_32_ext_howto_table + r_type;
|
||||
MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend));
|
||||
}
|
||||
|
||||
void
|
||||
DEFUN(NAME(lynx,swap_std_reloc_in), (abfd, bytes, cache_ptr, symbols),
|
||||
bfd *abfd AND
|
||||
struct reloc_std_external *bytes AND
|
||||
arelent *cache_ptr AND
|
||||
asymbol **symbols)
|
||||
{
|
||||
char tmp;
|
||||
int r_index;
|
||||
int r_extern;
|
||||
unsigned int r_length;
|
||||
int r_pcrel;
|
||||
int r_baserel, r_jmptable, r_relative;
|
||||
struct aoutdata *su = &(abfd->tdata.aout_data->a);
|
||||
|
||||
cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address);
|
||||
|
||||
r_index = (bytes->r_type[0] << 16)
|
||||
| (bytes->r_index[2] << 8)
|
||||
| bytes->r_index[1];
|
||||
r_extern = (0 != (bytes->r_index[0] & RELOC_STD_BITS_EXTERN_BIG));
|
||||
r_pcrel = (0 != (bytes->r_index[0] & RELOC_STD_BITS_PCREL_BIG));
|
||||
r_baserel = (0 != (bytes->r_index[0] & RELOC_STD_BITS_BASEREL_BIG));
|
||||
r_jmptable= (0 != (bytes->r_index[0] & RELOC_STD_BITS_JMPTABLE_BIG));
|
||||
r_relative= (0 != (bytes->r_index[0] & RELOC_STD_BITS_RELATIVE_BIG));
|
||||
r_length = (bytes->r_index[0] & RELOC_STD_BITS_LENGTH_BIG)
|
||||
>> RELOC_STD_BITS_LENGTH_SH_BIG;
|
||||
|
||||
cache_ptr->howto = aout_32_std_howto_table + r_length + 4 * r_pcrel;
|
||||
/* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */
|
||||
|
||||
MOVE_ADDRESS(0);
|
||||
}
|
||||
|
||||
/* Reloc hackery */
|
||||
|
||||
boolean
|
||||
DEFUN(NAME(lynx,slurp_reloc_table),(abfd, asect, symbols),
|
||||
bfd *abfd AND
|
||||
sec_ptr asect AND
|
||||
asymbol **symbols)
|
||||
{
|
||||
unsigned int count;
|
||||
bfd_size_type reloc_size;
|
||||
PTR relocs;
|
||||
arelent *reloc_cache;
|
||||
size_t each_size;
|
||||
|
||||
if (asect->relocation) return true;
|
||||
|
||||
if (asect->flags & SEC_CONSTRUCTOR) return true;
|
||||
|
||||
if (asect == obj_datasec (abfd)) {
|
||||
reloc_size = exec_hdr(abfd)->a_drsize;
|
||||
goto doit;
|
||||
}
|
||||
|
||||
if (asect == obj_textsec (abfd)) {
|
||||
reloc_size = exec_hdr(abfd)->a_trsize;
|
||||
goto doit;
|
||||
}
|
||||
|
||||
bfd_error = invalid_operation;
|
||||
return false;
|
||||
|
||||
doit:
|
||||
bfd_seek (abfd, asect->rel_filepos, SEEK_SET);
|
||||
each_size = obj_reloc_entry_size (abfd);
|
||||
|
||||
count = reloc_size / each_size;
|
||||
|
||||
|
||||
reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t)(count * sizeof
|
||||
(arelent)));
|
||||
if (!reloc_cache) {
|
||||
nomem:
|
||||
bfd_error = no_memory;
|
||||
return false;
|
||||
}
|
||||
|
||||
relocs = (PTR) bfd_alloc (abfd, reloc_size);
|
||||
if (!relocs) {
|
||||
bfd_release (abfd, reloc_cache);
|
||||
goto nomem;
|
||||
}
|
||||
|
||||
if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) {
|
||||
bfd_release (abfd, relocs);
|
||||
bfd_release (abfd, reloc_cache);
|
||||
bfd_error = system_call_error;
|
||||
return false;
|
||||
}
|
||||
|
||||
if (each_size == RELOC_EXT_SIZE) {
|
||||
register struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;
|
||||
unsigned int counter = 0;
|
||||
arelent *cache_ptr = reloc_cache;
|
||||
|
||||
for (; counter < count; counter++, rptr++, cache_ptr++) {
|
||||
NAME(lynx,swap_ext_reloc_in)(abfd, rptr, cache_ptr, symbols);
|
||||
}
|
||||
} else {
|
||||
register struct reloc_std_external *rptr = (struct reloc_std_external*) relocs;
|
||||
unsigned int counter = 0;
|
||||
arelent *cache_ptr = reloc_cache;
|
||||
|
||||
for (; counter < count; counter++, rptr++, cache_ptr++) {
|
||||
NAME(lynx,swap_std_reloc_in)(abfd, rptr, cache_ptr, symbols);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
bfd_release (abfd,relocs);
|
||||
asect->relocation = reloc_cache;
|
||||
asect->reloc_count = count;
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Write out a relocation section into an object file. */
|
||||
|
||||
boolean
|
||||
DEFUN(NAME(lynx,squirt_out_relocs),(abfd, section),
|
||||
bfd *abfd AND
|
||||
asection *section)
|
||||
{
|
||||
arelent **generic;
|
||||
unsigned char *native, *natptr;
|
||||
size_t each_size;
|
||||
|
||||
unsigned int count = section->reloc_count;
|
||||
size_t natsize;
|
||||
|
||||
if (count == 0) return true;
|
||||
|
||||
each_size = obj_reloc_entry_size (abfd);
|
||||
natsize = each_size * count;
|
||||
native = (unsigned char *) bfd_zalloc (abfd, natsize);
|
||||
if (!native) {
|
||||
bfd_error = no_memory;
|
||||
return false;
|
||||
}
|
||||
|
||||
generic = section->orelocation;
|
||||
|
||||
if (each_size == RELOC_EXT_SIZE)
|
||||
{
|
||||
for (natptr = native;
|
||||
count != 0;
|
||||
--count, natptr += each_size, ++generic)
|
||||
NAME(lynx,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr);
|
||||
}
|
||||
else
|
||||
{
|
||||
for (natptr = native;
|
||||
count != 0;
|
||||
--count, natptr += each_size, ++generic)
|
||||
NAME(lynx,swap_std_reloc_out)(abfd, *generic, (struct reloc_std_external *)natptr);
|
||||
}
|
||||
|
||||
if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
|
||||
bfd_release(abfd, native);
|
||||
return false;
|
||||
}
|
||||
bfd_release (abfd, native);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/* This is stupid. This function should be a boolean predicate */
|
||||
unsigned int
|
||||
DEFUN(NAME(lynx,canonicalize_reloc),(abfd, section, relptr, symbols),
|
||||
bfd *abfd AND
|
||||
sec_ptr section AND
|
||||
arelent **relptr AND
|
||||
asymbol **symbols)
|
||||
{
|
||||
arelent *tblptr = section->relocation;
|
||||
unsigned int count;
|
||||
|
||||
if (!(tblptr || NAME(lynx,slurp_reloc_table)(abfd, section, symbols)))
|
||||
return 0;
|
||||
|
||||
if (section->flags & SEC_CONSTRUCTOR) {
|
||||
arelent_chain *chain = section->constructor_chain;
|
||||
for (count = 0; count < section->reloc_count; count ++) {
|
||||
*relptr ++ = &chain->relent;
|
||||
chain = chain->next;
|
||||
}
|
||||
}
|
||||
else {
|
||||
tblptr = section->relocation;
|
||||
if (!tblptr) return 0;
|
||||
|
||||
for (count = 0; count++ < section->reloc_count;)
|
||||
{
|
||||
*relptr++ = tblptr++;
|
||||
}
|
||||
}
|
||||
*relptr = 0;
|
||||
|
||||
return section->reloc_count;
|
||||
}
|
||||
|
||||
#define MY_canonicalize_reloc NAME(lynx,canonicalize_reloc)
|
||||
|
||||
#include "aout-target.h"
|
||||
Loading…
Add table
Reference in a new issue