3255 lines
93 KiB
Objective-C
3255 lines
93 KiB
Objective-C
/* Support for Intel 960 COFF and Motorola 88k BCS COFF (and maybe others)
|
||
Copyright (C) 1990-1991 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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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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/*doc*
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@section coff backends
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BFD supports a number of different flavours of coff format. The major
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difference between formats are the sizes and alignments of fields in
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structures on disk, and the occasional extra field.
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Coff in all its varieties is implimented with a few common files and a
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number of implementation specific files. For example, The 88k bcs coff
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format is implemented in the file @code{m88k-bcs.c}. This file
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@code{#include}s @code{m88k-bcs.h} which defines the external
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structure of the coff format for the 88k, and @code{internalcoff.h}
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which defines the internal structure. @code{m88k-bcs.c} also defines
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the relocations used by the 88k format @xref{Relocations}. Then the
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major portion of coff code is included (@code{coffcode.h}) which
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defines the methods used to act upon the types defined in
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@code{m88k-bcs.h} and @code{internalcoff.h}.
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The Intel i960 processor version of coff is implemented in
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@code{icoff.c}. This file has the same structure as
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@code{m88k-bcs.c}, except that it includes @code{intel-coff.h} rather
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than @code{m88k-bcs.h}.
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@subsection Porting To A New Version of Coff
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The recommended method is to select from the existing implimentations
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the version of coff which is most like the one you want to use, for
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our purposes, we'll say that i386 coff is the one you select, and that
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your coff flavour is called foo. Copy the @code{i386coff.c} to @code{foocoff.c},
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copy @code{../include/i386coff.h} to @code{../include/foocoff.h} and
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add the lines to @code{targets.c} and @code{Makefile.in} so that your
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new back end is used.
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Alter the shapes of the structures in @code{../include/foocoff.h} so
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that they match what you need. You will probably also have to add
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@code{#ifdef}s to the code in @code{internalcoff.h} and
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@code{coffcode.h} if your version of coff is too wild.
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You can verify that your new BFD backend works quite simply by
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building @code{objdump} from the @code{binutils} directory, and
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making sure that its version of what's going on at your host systems
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idea (assuming it has the pretty standard coff dump utility (usually
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called @code{att-dump} or just @code{dump})) are the same.
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Then clean up your code, and send what you've done to Cygnus. Then your stuff
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will be in the next release, and you won't have to keep integrating
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it.
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@subsection How The Coff Backend Works
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@subsubsection Bit Twiddling
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Each flavour of coff supported in BFD has its own header file
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descibing the external layout of the structures. There is also an
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internal description of the coff layout (in @code{internalcoff.h})
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file (@code{}). A major function of the coff backend is swapping the
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bytes and twiddling the bits to translate the external form of the
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structures into the normal internal form. This is all performed in the
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@code{bfd_swap}_@i{thing}_@i{direction} routines. Some elements are
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different sizes between different versions of coff, it is the duty of
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the coff version specific include file to override the definitions of
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various packing routines in @code{coffcode.h}. Eg the size of line
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number entry in coff is sometimes 16 bits, and sometimes 32 bits.
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@code{#define}ing @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will
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select the correct one. No doubt, some day someone will find a version
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of coff which has a varying field size not catered for at the moment.
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To port BFD, that person will have to add more @code{#defines}.
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Three of the bit twiddling routines are exported to @code{gdb};
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@code{coff_swap_aux_in}, @code{coff_swap_sym_in} and
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@code{coff_swap_linno_in}. @code{GDB} reads the symbol table on its
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own, but uses BFD to fix things up.
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@subsubsection Symbol Reading
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The simple canonical form for symbols used by BFD is not rich enough
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to keep all the information available in a coff symbol table. The back
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end gets around this by keeping the original symbol table around,
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"behind the sceens".
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When a symbol table is requested (through a call to
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@code{bfd_canonicalize_symtab}, a request gets through to
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@code{get_normalized_symtab}. This reads the symbol table from the
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coff file and swaps all the structures inside into the internal form.
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It also fixes up all the pointers in the table (represented in the file
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by offsets from the first symbol in the table) into physical pointers
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to elements in the new internal table. This involves some work since
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the meanings of fields changes depending upon context; a field that is a
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pointer to another structure in the symbol table at one moment may be
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the size in bytes of a structure in the next.
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Another pass is made over the table. All symbols which mark file names
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(@code{C_FILE} symbols) are modified so that the internal string
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points to the value in the auxent (the real filename) rather than the
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normal text associated with the symbol (@code{".file"}).
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At this time the symbol names are moved around. Coff stores all
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symbols less than nine characters long physically within the symbol
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table, longer strings are kept at the end of the file in the string
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table. This pass moves all strings into memory, and replaces them with
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pointers to the strings.
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The symbol table is massaged once again, this time to create the
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canonical table used by the BFD application. Each symbol is inspected
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in turn, and a decision made (using the @code{sclass} field) about the
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various flags to set in the @code{asymbol} @xref{Symbols}. The
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generated canonical table shares strings with the hidden internal
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symbol table.
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Any linenumbers are read from the coff file too, and attached to the
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symbols which own the functions the linenumbers belong to.
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@subsubsection Symbol Writing
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Writing a symbol to a coff file which didn't come from a coff file
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will lose any debugging information. The @code{asymbol} structure
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remembers the BFD from which was born, and on output the back end
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makes sure that the same destination target as source target is
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present.
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When the symbols have come from a coff file then all the debugging
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information is preserved.
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Symbol tables are provided for writing to the back end in a vector of
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pointers to pointers. This allows applications like the linker to
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accumulate and output large symbol tables without having to do too
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much byte copying.
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The symbol table is not output to a writable BFD until it is closed.
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The order of operations on the canonical symbol table at that point
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are:
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@table @code
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@item coff_renumber_symbols
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This function runs through the provided symbol table and patches each
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symbol marked as a file place holder (@code{C_FILE}) to point to the
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next file place holder in the list. It also marks each @code{offset}
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field in the list with the offset from the first symbol of the current
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symbol.
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Another function of this procedure is to turn the canonical value form
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of BFD into the form used by coff. Internally, BFD expects symbol
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values to be offsets from a section base; so a symbol physically at
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0x120, but in a section starting at 0x100, would have the value 0x20.
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Coff expects symbols to contain their final value, so symbols have
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their values changed at this point to reflect their sum with their
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owning section. Note that this transformation uses the
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@code{output_section} field of the @code{asymbol}'s @code{asection}
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@xref{Sections}.
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@item coff_mangle_symbols
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This routine runs though the provided symbol table and uses the
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offsets generated by the previous pass and the pointers generated when
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the symbol table was read in to create the structured hierachy
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required by coff. It changes each pointer to a symbol to an index into
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the symbol table of the symbol being referenced.
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@item coff_write_symbols
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This routine runs through the symbol table and patches up the symbols
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from their internal form into the coff way, calls the bit twiddlers
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and writes out the tabel to the file.
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@end table
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*/
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/*proto*
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The hidden information for an asymbol is:
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*+++
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$ typedef struct coff_ptr_struct
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$ {
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Remembers the offset from the first symbol in the file for this
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symbol. Generated by @code{coff_renumber_symbols}.
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$ unsigned int offset;
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Should the tag field of this symbol be renumbered.
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Created by @code{coff_pointerize_aux}.
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$ char fix_tag;
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Should the endidx field of this symbol be renumbered.
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Created by @code{coff_pointerize_aux}.
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$ char fix_end;
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The container for the symbol structure as read and translated from the file.
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$ union {
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$ union internal_auxent auxent;
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$ struct internal_syment syment;
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$ } u;
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$ } combined_entry_type;
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$
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*---
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Each canonical asymbol really looks like this:
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*+++
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$ typedef struct coff_symbol_struct
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$ {
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The actual symbol which the rest of BFD works with
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$ asymbol symbol;
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A pointer to the hidden information for this symbol
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$ combined_entry_type *native;
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A pointer to the linenumber information for this symbol
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$ struct lineno_cache_entry *lineno;
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$ } coff_symbol_type;
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*---
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*/
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/* $Id$ */
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/* Most of this hacked by Steve Chamberlain, steve@cygnus.com */
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/* Align an address upward to a boundary, expressed as a number of bytes.
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E.g. align to an 8-byte boundary with argument of 8. */
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#define ALIGN(this, boundary) \
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((( (this) + ((boundary) -1)) & (~((boundary)-1))))
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/* Align an address upward to a power of two. Argument is the power
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of two, e.g. 8-byte alignment uses argument of 3 (8 == 2^3). */
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#define i960_align(addr, align) \
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( ((addr) + ((1<<(align))-1)) & (-1 << (align)))
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#define PUTWORD bfd_h_put_32
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#define PUTHALF bfd_h_put_16
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#ifndef GET_FCN_LNNOPTR
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#define GET_FCN_LNNOPTR(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr)
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#endif
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#ifndef GET_FCN_ENDNDX
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#define GET_FCN_ENDNDX(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx)
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#endif
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#ifndef PUT_FCN_LNNOPTR
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#define PUT_FCN_LNNOPTR(abfd, in, ext) PUTWORD(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr)
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#endif
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#ifndef PUT_FCN_ENDNDX
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#define PUT_FCN_ENDNDX(abfd, in, ext) PUTWORD(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx)
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#endif
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#ifndef GET_LNSZ_LNNO
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#define GET_LNSZ_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_lnno)
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#endif
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#ifndef GET_LNSZ_SIZE
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#define GET_LNSZ_SIZE(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_size)
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#endif
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#ifndef PUT_LNSZ_LNNO
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#define PUT_LNSZ_LNNO(abfd, in, ext) bfd_h_put_16(abfd, in, (bfd_byte *)ext->x_sym.x_misc.x_lnsz.x_lnno)
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#endif
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#ifndef PUT_LNSZ_SIZE
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#define PUT_LNSZ_SIZE(abfd, in, ext) bfd_h_put_16(abfd, in, (bfd_byte*) ext->x_sym.x_misc.x_lnsz.x_size)
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#endif
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#ifndef GET_SCN_SCNLEN
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#define GET_SCN_SCNLEN(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_scnlen)
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#endif
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#ifndef GET_SCN_NRELOC
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#define GET_SCN_NRELOC(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nreloc)
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#endif
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#ifndef GET_SCN_NLINNO
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#define GET_SCN_NLINNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nlinno)
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#endif
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#ifndef PUT_SCN_SCNLEN
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#define PUT_SCN_SCNLEN(abfd,in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_scn.x_scnlen)
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#endif
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#ifndef PUT_SCN_NRELOC
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#define PUT_SCN_NRELOC(abfd,in, ext) bfd_h_put_16(abfd, in, (bfd_byte *)ext->x_scn.x_nreloc)
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#endif
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#ifndef PUT_SCN_NLINNO
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#define PUT_SCN_NLINNO(abfd,in, ext) bfd_h_put_16(abfd,in, (bfd_byte *) ext->x_scn.x_nlinno)
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#endif
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/* void warning(); */
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/*
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* Return a word with STYP_* (scnhdr.s_flags) flags set to represent the
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* incoming SEC_* flags. The inverse of this function is styp_to_sec_flags().
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* NOTE: If you add to/change this routine, you should mirror the changes
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* in styp_to_sec_flags().
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*/
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static long
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DEFUN(sec_to_styp_flags, (sec_name, sec_flags),
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CONST char * sec_name AND
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flagword sec_flags)
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{
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long styp_flags = 0;
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if (!strcmp(sec_name, _TEXT)) {
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return((long)STYP_TEXT);
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} else if (!strcmp(sec_name, _DATA)) {
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return((long)STYP_DATA);
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} else if (!strcmp(sec_name, _BSS)) {
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return((long)STYP_BSS);
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}
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/* Try and figure out what it should be */
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if (sec_flags & SEC_CODE) styp_flags = STYP_TEXT;
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if (sec_flags & SEC_DATA) styp_flags = STYP_DATA;
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else if (sec_flags & SEC_READONLY)
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#ifdef STYP_LIT /* 29k readonly text/data section */
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styp_flags = STYP_LIT;
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#else
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styp_flags = STYP_TEXT;
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#endif /* STYP_LIT */
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else if (sec_flags & SEC_LOAD) styp_flags = STYP_TEXT;
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if (styp_flags == 0) styp_flags = STYP_BSS;
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return(styp_flags);
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}
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/*
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* Return a word with SEC_* flags set to represent the incoming
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* STYP_* flags (from scnhdr.s_flags). The inverse of this
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* function is sec_to_styp_flags().
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* NOTE: If you add to/change this routine, you should mirror the changes
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* in sec_to_styp_flags().
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*/
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static flagword
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DEFUN(styp_to_sec_flags, (styp_flags),
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long styp_flags)
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{
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flagword sec_flags=0;
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if ((styp_flags & STYP_TEXT) || (styp_flags & STYP_DATA))
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sec_flags = (SEC_LOAD | SEC_ALLOC);
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else if (styp_flags & STYP_BSS)
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sec_flags = SEC_ALLOC;
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||
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#ifdef STYP_LIT /* A29k readonly text/data section type */
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if ((styp_flags & STYP_LIT) == STYP_LIT)
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sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
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||
#endif /* STYP_LIT */
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||
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||
return(sec_flags);
|
||
}
|
||
|
||
#define get_index(symbol) ((int) (symbol)->value)
|
||
#define set_index(symbol, idx) ((symbol)->value = (idx))
|
||
|
||
/* **********************************************************************
|
||
Here are all the routines for swapping the structures seen in the
|
||
outside world into the internal forms.
|
||
*/
|
||
|
||
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||
static void
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||
DEFUN(bfd_swap_reloc_in,(abfd, reloc_src, reloc_dst),
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||
bfd *abfd AND
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||
RELOC *reloc_src AND
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||
struct internal_reloc *reloc_dst)
|
||
{
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||
reloc_dst->r_vaddr = bfd_h_get_32(abfd, (bfd_byte *)reloc_src->r_vaddr);
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||
reloc_dst->r_symndx = bfd_h_get_32(abfd, (bfd_byte *) reloc_src->r_symndx);
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||
reloc_dst->r_type = bfd_h_get_16(abfd, (bfd_byte *) reloc_src->r_type);
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||
#if M88
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reloc_dst->r_offset = bfd_h_get_16(abfd, (bfd_byte *) reloc_src->r_offset);
|
||
#endif
|
||
}
|
||
|
||
|
||
static void
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||
DEFUN(bfd_swap_reloc_out,(abfd, reloc_src, reloc_dst),
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||
bfd *abfd AND
|
||
struct internal_reloc *reloc_src AND
|
||
struct external_reloc *reloc_dst)
|
||
{
|
||
bfd_h_put_32(abfd, reloc_src->r_vaddr, (bfd_byte *) reloc_dst->r_vaddr);
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||
bfd_h_put_32(abfd, reloc_src->r_symndx, (bfd_byte *) reloc_dst->r_symndx);
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||
bfd_h_put_16(abfd, reloc_src->r_type, (bfd_byte *) reloc_dst->r_type);
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||
#if M88
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||
bfd_h_put_16(abfd, reloc_src->r_offset, (bfd_byte *) reloc_dst->r_offset);
|
||
#endif
|
||
|
||
}
|
||
|
||
static void
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||
DEFUN(bfd_swap_filehdr_in,(abfd, filehdr_src, filehdr_dst),
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||
bfd *abfd AND
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||
FILHDR *filehdr_src AND
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||
struct internal_filehdr *filehdr_dst)
|
||
{
|
||
filehdr_dst->f_magic = bfd_h_get_16(abfd, (bfd_byte *) filehdr_src->f_magic);
|
||
filehdr_dst->f_nscns = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_nscns);
|
||
filehdr_dst->f_timdat = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_timdat);
|
||
filehdr_dst->f_symptr = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_symptr);
|
||
filehdr_dst->f_nsyms = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_nsyms);
|
||
filehdr_dst->f_opthdr = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_opthdr);
|
||
filehdr_dst->f_flags = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_flags);
|
||
}
|
||
|
||
static void
|
||
DEFUN(bfd_swap_filehdr_out,(abfd, filehdr_in, filehdr_out),
|
||
bfd *abfd AND
|
||
struct internal_filehdr *filehdr_in AND
|
||
FILHDR *filehdr_out)
|
||
{
|
||
bfd_h_put_16(abfd, filehdr_in->f_magic, (bfd_byte *) filehdr_out->f_magic);
|
||
bfd_h_put_16(abfd, filehdr_in->f_nscns, (bfd_byte *) filehdr_out->f_nscns);
|
||
bfd_h_put_32(abfd, filehdr_in->f_timdat, (bfd_byte *) filehdr_out->f_timdat);
|
||
bfd_h_put_32(abfd, filehdr_in->f_symptr, (bfd_byte *) filehdr_out->f_symptr);
|
||
bfd_h_put_32(abfd, filehdr_in->f_nsyms, (bfd_byte *) filehdr_out->f_nsyms);
|
||
bfd_h_put_16(abfd, filehdr_in->f_opthdr, (bfd_byte *) filehdr_out->f_opthdr);
|
||
bfd_h_put_16(abfd, filehdr_in->f_flags, (bfd_byte *) filehdr_out->f_flags);
|
||
}
|
||
|
||
|
||
#ifndef NO_COFF_SYMBOLS
|
||
|
||
static void
|
||
DEFUN(coff_swap_sym_in,(abfd, ext1, in1),
|
||
bfd *abfd AND
|
||
PTR ext1 AND
|
||
PTR in1)
|
||
{
|
||
SYMENT *ext = (SYMENT *)ext1;
|
||
struct internal_syment *in = (struct internal_syment *)in1;
|
||
|
||
if( ext->e.e_name[0] == 0) {
|
||
in->_n._n_n._n_zeroes = 0;
|
||
in->_n._n_n._n_offset = bfd_h_get_32(abfd, (bfd_byte *) ext->e.e.e_offset);
|
||
}
|
||
else {
|
||
#if SYMNMLEN != E_SYMNMLEN
|
||
-> Error, we need to cope with truncating or extending SYMNMLEN!;
|
||
#else
|
||
memcpy(in->_n._n_name, ext->e.e_name, SYMNMLEN);
|
||
#endif
|
||
}
|
||
in->n_value = bfd_h_get_32(abfd, (bfd_byte *) ext->e_value);
|
||
in->n_scnum = bfd_h_get_16(abfd, (bfd_byte *) ext->e_scnum);
|
||
if (sizeof(ext->e_type) == 2){
|
||
in->n_type = bfd_h_get_16(abfd, (bfd_byte *) ext->e_type);
|
||
}
|
||
else {
|
||
in->n_type = bfd_h_get_32(abfd, (bfd_byte *) ext->e_type);
|
||
}
|
||
in->n_sclass = bfd_h_get_8(abfd, ext->e_sclass);
|
||
in->n_numaux = bfd_h_get_8(abfd, ext->e_numaux);
|
||
}
|
||
|
||
static void
|
||
DEFUN(coff_swap_sym_out,(abfd,in, ext),
|
||
bfd *abfd AND
|
||
struct internal_syment *in AND
|
||
SYMENT *ext)
|
||
{
|
||
if(in->_n._n_name[0] == 0) {
|
||
bfd_h_put_32(abfd, 0, (bfd_byte *) ext->e.e.e_zeroes);
|
||
bfd_h_put_32(abfd, in->_n._n_n._n_offset, (bfd_byte *) ext->e.e.e_offset);
|
||
}
|
||
else {
|
||
#if SYMNMLEN != E_SYMNMLEN
|
||
-> Error, we need to cope with truncating or extending SYMNMLEN!;
|
||
#else
|
||
memcpy(ext->e.e_name, in->_n._n_name, SYMNMLEN);
|
||
#endif
|
||
}
|
||
bfd_h_put_32(abfd, in->n_value , (bfd_byte *) ext->e_value);
|
||
bfd_h_put_16(abfd, in->n_scnum , (bfd_byte *) ext->e_scnum);
|
||
if (sizeof(ext->e_type) == 2)
|
||
{
|
||
bfd_h_put_16(abfd, in->n_type , (bfd_byte *) ext->e_type);
|
||
}
|
||
else
|
||
{
|
||
bfd_h_put_32(abfd, in->n_type , (bfd_byte *) ext->e_type);
|
||
}
|
||
bfd_h_put_8(abfd, in->n_sclass , ext->e_sclass);
|
||
bfd_h_put_8(abfd, in->n_numaux , ext->e_numaux);
|
||
}
|
||
|
||
static void
|
||
DEFUN(coff_swap_aux_in,(abfd, ext1, type, class, in1),
|
||
bfd *abfd AND
|
||
PTR ext1 AND
|
||
int type AND
|
||
int class AND
|
||
PTR in1)
|
||
{
|
||
AUXENT *ext = (AUXENT *)ext1;
|
||
union internal_auxent *in = (union internal_auxent *)in1;
|
||
switch (class) {
|
||
case C_FILE:
|
||
if (ext->x_file.x_fname[0] == 0) {
|
||
in->x_file.x_n.x_zeroes = 0;
|
||
in->x_file.x_n.x_offset = bfd_h_get_32(abfd, (bfd_byte *) ext->x_file.x_n.x_offset);
|
||
} else {
|
||
#if FILNMLEN != E_FILNMLEN
|
||
-> Error, we need to cope with truncating or extending FILNMLEN!;
|
||
#else
|
||
memcpy (in->x_file.x_fname, ext->x_file.x_fname, FILNMLEN);
|
||
#endif
|
||
}
|
||
|
||
break;
|
||
case C_STAT:
|
||
#ifdef C_LEAFSTAT
|
||
case C_LEAFSTAT:
|
||
#endif
|
||
case C_HIDDEN:
|
||
if (type == T_NULL) {
|
||
in->x_scn.x_scnlen = GET_SCN_SCNLEN(abfd, ext);
|
||
in->x_scn.x_nreloc = GET_SCN_NRELOC(abfd, ext);
|
||
in->x_scn.x_nlinno = GET_SCN_NLINNO(abfd, ext);
|
||
break;
|
||
}
|
||
default:
|
||
in->x_sym.x_tagndx.l = bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_tagndx);
|
||
#ifndef NO_TVNDX
|
||
in->x_sym.x_tvndx = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_tvndx);
|
||
#endif
|
||
|
||
if (ISARY(type) || class == C_BLOCK) {
|
||
#if DIMNUM != E_DIMNUM
|
||
-> Error, we need to cope with truncating or extending DIMNUM!;
|
||
#else
|
||
in->x_sym.x_fcnary.x_ary.x_dimen[0] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[0]);
|
||
in->x_sym.x_fcnary.x_ary.x_dimen[1] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[1]);
|
||
in->x_sym.x_fcnary.x_ary.x_dimen[2] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[2]);
|
||
in->x_sym.x_fcnary.x_ary.x_dimen[3] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[3]);
|
||
#endif
|
||
}
|
||
in->x_sym.x_fcnary.x_fcn.x_lnnoptr = GET_FCN_LNNOPTR(abfd, ext);
|
||
in->x_sym.x_fcnary.x_fcn.x_endndx.l = GET_FCN_ENDNDX(abfd, ext);
|
||
|
||
if (ISFCN(type)) {
|
||
in->x_sym.x_misc.x_fsize = bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_misc.x_fsize);
|
||
}
|
||
else {
|
||
in->x_sym.x_misc.x_lnsz.x_lnno = GET_LNSZ_LNNO(abfd, ext);
|
||
in->x_sym.x_misc.x_lnsz.x_size = GET_LNSZ_SIZE(abfd, ext);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
DEFUN(coff_swap_aux_out,(abfd, in, type, class, ext),
|
||
bfd *abfd AND
|
||
union internal_auxent *in AND
|
||
int type AND
|
||
int class AND
|
||
AUXENT *ext)
|
||
{
|
||
switch (class) {
|
||
case C_FILE:
|
||
if (in->x_file.x_fname[0] == 0) {
|
||
PUTWORD(abfd, 0, (bfd_byte *) ext->x_file.x_n.x_zeroes );
|
||
PUTWORD(abfd, in->x_file.x_n.x_offset, (bfd_byte *) ext->x_file.x_n.x_offset);
|
||
}
|
||
else {
|
||
#if FILNMLEN != E_FILNMLEN
|
||
-> Error, we need to cope with truncating or extending FILNMLEN!;
|
||
#else
|
||
memcpy (ext->x_file.x_fname, in->x_file.x_fname, FILNMLEN);
|
||
#endif
|
||
}
|
||
break;
|
||
case C_STAT:
|
||
#ifdef C_LEAFSTAT
|
||
case C_LEAFSTAT:
|
||
#endif
|
||
case C_HIDDEN:
|
||
if (type == T_NULL) {
|
||
|
||
PUT_SCN_SCNLEN(abfd, in->x_scn.x_scnlen, ext);
|
||
PUT_SCN_NRELOC(abfd, in->x_scn.x_nreloc, ext);
|
||
PUT_SCN_NLINNO(abfd, in->x_scn.x_nlinno, ext);
|
||
break;
|
||
}
|
||
default:
|
||
PUTWORD(abfd, in->x_sym.x_tagndx.l, (bfd_byte *) ext->x_sym.x_tagndx);
|
||
#ifndef NO_TVNDX
|
||
PUTWORD(abfd, in->x_sym.x_tvndx , (bfd_byte *) ext->x_sym.x_tvndx);
|
||
#endif
|
||
|
||
if (ISFCN(type)) {
|
||
PUTWORD(abfd, in->x_sym.x_misc.x_fsize, (bfd_byte *) ext->x_sym.x_misc.x_fsize);
|
||
PUT_FCN_LNNOPTR(abfd, in->x_sym.x_fcnary.x_fcn.x_lnnoptr, ext);
|
||
PUT_FCN_ENDNDX(abfd, in->x_sym.x_fcnary.x_fcn.x_endndx.l, ext);
|
||
}
|
||
else {
|
||
|
||
if (ISARY(type) || class == C_BLOCK) {
|
||
#if DIMNUM != E_DIMNUM
|
||
-> Error, we need to cope with truncating or extending DIMNUM!;
|
||
#else
|
||
bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[0], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[0]);
|
||
bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[1], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[1]);
|
||
bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[2], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[2]);
|
||
bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[3], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[3]);
|
||
#endif
|
||
}
|
||
PUT_LNSZ_LNNO(abfd, in->x_sym.x_misc.x_lnsz.x_lnno, ext);
|
||
PUT_LNSZ_SIZE(abfd, in->x_sym.x_misc.x_lnsz.x_size, ext);
|
||
|
||
PUT_FCN_LNNOPTR(abfd, in->x_sym.x_fcnary.x_fcn.x_lnnoptr, ext);
|
||
PUT_FCN_ENDNDX(abfd, in->x_sym.x_fcnary.x_fcn.x_endndx.l, ext);
|
||
|
||
|
||
}
|
||
}
|
||
}
|
||
|
||
#endif /* NO_COFF_SYMBOLS */
|
||
|
||
#ifndef NO_COFF_LINENOS
|
||
|
||
static void
|
||
DEFUN(coff_swap_lineno_in,(abfd, ext1, in1),
|
||
bfd *abfd AND
|
||
PTR ext1 AND
|
||
PTR in1)
|
||
{
|
||
LINENO *ext = (LINENO *)ext1;
|
||
struct internal_lineno *in = (struct internal_lineno *)in1;
|
||
|
||
in->l_addr.l_symndx = bfd_h_get_32(abfd, (bfd_byte *) ext->l_addr.l_symndx);
|
||
#if defined(M88)
|
||
in->l_lnno = bfd_h_get_32(abfd, (bfd_byte *) ext->l_lnno);
|
||
#else
|
||
in->l_lnno = bfd_h_get_16(abfd, (bfd_byte *) ext->l_lnno);
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
DEFUN(coff_swap_lineno_out,(abfd, in, ext),
|
||
bfd *abfd AND
|
||
struct internal_lineno *in AND
|
||
struct external_lineno *ext)
|
||
{
|
||
PUTWORD(abfd, in->l_addr.l_symndx, (bfd_byte *) ext->l_addr.l_symndx);
|
||
#if defined(M88)
|
||
PUTWORD(abfd, in->l_lnno, (bfd_byte *) ext->l_lnno);
|
||
#else
|
||
PUTHALF(abfd, in->l_lnno, (bfd_byte *) ext->l_lnno);
|
||
#endif
|
||
}
|
||
|
||
#endif /* NO_COFF_LINENOS */
|
||
|
||
|
||
static void
|
||
DEFUN(bfd_swap_aouthdr_in,(abfd, aouthdr_ext1, aouthdr_int1),
|
||
bfd *abfd AND
|
||
PTR aouthdr_ext1 AND
|
||
PTR aouthdr_int1)
|
||
{
|
||
AOUTHDR *aouthdr_ext = (AOUTHDR *) aouthdr_ext1;
|
||
struct internal_aouthdr *aouthdr_int = (struct internal_aouthdr *)aouthdr_int1;
|
||
|
||
aouthdr_int->magic = bfd_h_get_16(abfd, (bfd_byte *) aouthdr_ext->magic);
|
||
aouthdr_int->vstamp = bfd_h_get_16(abfd, (bfd_byte *) aouthdr_ext->vstamp);
|
||
aouthdr_int->tsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->tsize);
|
||
aouthdr_int->dsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->dsize);
|
||
aouthdr_int->bsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->bsize);
|
||
aouthdr_int->entry = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->entry);
|
||
aouthdr_int->text_start = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->text_start);
|
||
aouthdr_int->data_start = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->data_start);
|
||
#ifdef I960
|
||
aouthdr_int->tagentries = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->tagentries);
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
DEFUN(bfd_swap_aouthdr_out,(abfd, aouthdr_in, aouthdr_out),
|
||
bfd *abfd AND
|
||
struct internal_aouthdr *aouthdr_in AND
|
||
AOUTHDR *aouthdr_out)
|
||
{
|
||
bfd_h_put_16(abfd, aouthdr_in->magic, (bfd_byte *) aouthdr_out->magic);
|
||
bfd_h_put_16(abfd, aouthdr_in->vstamp, (bfd_byte *) aouthdr_out->vstamp);
|
||
bfd_h_put_32(abfd, aouthdr_in->tsize, (bfd_byte *) aouthdr_out->tsize);
|
||
bfd_h_put_32(abfd, aouthdr_in->dsize, (bfd_byte *) aouthdr_out->dsize);
|
||
bfd_h_put_32(abfd, aouthdr_in->bsize, (bfd_byte *) aouthdr_out->bsize);
|
||
bfd_h_put_32(abfd, aouthdr_in->entry, (bfd_byte *) aouthdr_out->entry);
|
||
bfd_h_put_32(abfd, aouthdr_in->text_start, (bfd_byte *) aouthdr_out->text_start);
|
||
bfd_h_put_32(abfd, aouthdr_in->data_start, (bfd_byte *) aouthdr_out->data_start);
|
||
#ifdef I960
|
||
bfd_h_put_32(abfd, aouthdr_in->tagentries, (bfd_byte *) aouthdr_out->tagentries);
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
DEFUN(coff_swap_scnhdr_in,(abfd, scnhdr_ext, scnhdr_int),
|
||
bfd *abfd AND
|
||
SCNHDR *scnhdr_ext AND
|
||
struct internal_scnhdr *scnhdr_int)
|
||
{
|
||
memcpy(scnhdr_int->s_name, scnhdr_ext->s_name, sizeof(scnhdr_int->s_name));
|
||
scnhdr_int->s_vaddr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_vaddr);
|
||
scnhdr_int->s_paddr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_paddr);
|
||
scnhdr_int->s_size = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_size);
|
||
scnhdr_int->s_scnptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_scnptr);
|
||
scnhdr_int->s_relptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_relptr);
|
||
scnhdr_int->s_lnnoptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_lnnoptr);
|
||
scnhdr_int->s_flags = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_flags);
|
||
#if defined(M88)
|
||
scnhdr_int->s_nreloc = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_nreloc);
|
||
scnhdr_int->s_nlnno = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_nlnno);
|
||
#else
|
||
scnhdr_int->s_nreloc = bfd_h_get_16(abfd, (bfd_byte *) scnhdr_ext->s_nreloc);
|
||
scnhdr_int->s_nlnno = bfd_h_get_16(abfd, (bfd_byte *) scnhdr_ext->s_nlnno);
|
||
#endif
|
||
#ifdef I960
|
||
scnhdr_int->s_align = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_align);
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
DEFUN(swap_scnhdr_out,(abfd, scnhdr_int, scnhdr_ext),
|
||
bfd *abfd AND
|
||
struct internal_scnhdr *scnhdr_int AND
|
||
SCNHDR *scnhdr_ext)
|
||
{
|
||
memcpy(scnhdr_ext->s_name, scnhdr_int->s_name, sizeof(scnhdr_int->s_name));
|
||
PUTWORD(abfd, scnhdr_int->s_vaddr, (bfd_byte *) scnhdr_ext->s_vaddr);
|
||
PUTWORD(abfd, scnhdr_int->s_paddr, (bfd_byte *) scnhdr_ext->s_paddr);
|
||
PUTWORD(abfd, scnhdr_int->s_size, (bfd_byte *) scnhdr_ext->s_size);
|
||
PUTWORD(abfd, scnhdr_int->s_scnptr, (bfd_byte *) scnhdr_ext->s_scnptr);
|
||
PUTWORD(abfd, scnhdr_int->s_relptr, (bfd_byte *) scnhdr_ext->s_relptr);
|
||
PUTWORD(abfd, scnhdr_int->s_lnnoptr, (bfd_byte *) scnhdr_ext->s_lnnoptr);
|
||
PUTWORD(abfd, scnhdr_int->s_flags, (bfd_byte *) scnhdr_ext->s_flags);
|
||
#if defined(M88)
|
||
PUTWORD(abfd, scnhdr_int->s_nlnno, (bfd_byte *) scnhdr_ext->s_nlnno);
|
||
PUTWORD(abfd, scnhdr_int->s_nreloc, (bfd_byte *) scnhdr_ext->s_nreloc);
|
||
#else
|
||
PUTHALF(abfd, scnhdr_int->s_nlnno, (bfd_byte *) scnhdr_ext->s_nlnno);
|
||
PUTHALF(abfd, scnhdr_int->s_nreloc, (bfd_byte *) scnhdr_ext->s_nreloc);
|
||
#endif
|
||
|
||
#if defined(I960)
|
||
PUTWORD(abfd, scnhdr_int->s_align, (bfd_byte *) scnhdr_ext->s_align);
|
||
#endif
|
||
}
|
||
|
||
|
||
/*
|
||
initialize a section structure with information peculiar to this
|
||
particular implementation of coff
|
||
*/
|
||
|
||
static boolean
|
||
DEFUN(coff_new_section_hook,(abfd_ignore, section_ignore),
|
||
bfd *abfd_ignore AND
|
||
asection *section_ignore)
|
||
{
|
||
section_ignore->alignment_power = abfd_ignore->xvec->align_power_min;
|
||
return true;
|
||
}
|
||
|
||
/* Take a section header read from a coff file (in HOST byte order),
|
||
and make a BFD "section" out of it. */
|
||
static boolean
|
||
DEFUN(make_a_section_from_file,(abfd, hdr),
|
||
bfd *abfd AND
|
||
struct internal_scnhdr *hdr)
|
||
{
|
||
asection *return_section;
|
||
|
||
{
|
||
/* Assorted wastage to null-terminate the name, thanks AT&T! */
|
||
char *name = bfd_alloc(abfd, sizeof (hdr->s_name)+1);
|
||
if (name == NULL) {
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
strncpy(name, (char *) &hdr->s_name[0], sizeof (hdr->s_name));
|
||
name[sizeof (hdr->s_name)] = 0;
|
||
|
||
return_section = bfd_make_section(abfd, name);
|
||
}
|
||
|
||
/* s_paddr is presumed to be = to s_vaddr */
|
||
#define assign(to, from) return_section->to = hdr->from
|
||
assign(vma, s_vaddr);
|
||
/* assign (vma, s_vaddr); */
|
||
assign(size, s_size);
|
||
assign(filepos, s_scnptr);
|
||
assign(rel_filepos, s_relptr);
|
||
assign(reloc_count, s_nreloc);
|
||
#ifdef I960
|
||
{
|
||
/* FIXME, use a temp var rather than alignment_power */
|
||
assign(alignment_power, s_align);
|
||
{
|
||
unsigned int i;
|
||
for (i = 0; i < 32; i++) {
|
||
if ((1 << i) >= (int) (return_section->alignment_power)) {
|
||
return_section->alignment_power = i;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
#endif
|
||
assign(line_filepos, s_lnnoptr);
|
||
/*
|
||
return_section->linesize = hdr->s_nlnno * sizeof (struct lineno);
|
||
*/
|
||
|
||
return_section->lineno_count = hdr->s_nlnno;
|
||
return_section->userdata = NULL;
|
||
return_section->next = (asection *) NULL;
|
||
return_section->flags = styp_to_sec_flags(hdr->s_flags);
|
||
|
||
|
||
if (hdr->s_nreloc != 0)
|
||
return_section->flags |= SEC_RELOC;
|
||
/* FIXME: should this check 'hdr->s_size > 0' */
|
||
if (hdr->s_scnptr != 0)
|
||
return_section->flags |= SEC_HAS_CONTENTS;
|
||
return true;
|
||
}
|
||
static boolean
|
||
DEFUN(coff_mkobject,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
set_tdata (abfd, bfd_zalloc (abfd,sizeof(coff_data_type)));
|
||
if (coff_data(abfd) == 0) {
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
coff_data(abfd)->relocbase = 0;
|
||
return true;
|
||
}
|
||
|
||
static
|
||
bfd_target *
|
||
DEFUN(coff_real_object_p,(abfd, nscns, internal_f, internal_a),
|
||
bfd *abfd AND
|
||
unsigned nscns AND
|
||
struct internal_filehdr *internal_f AND
|
||
struct internal_aouthdr *internal_a)
|
||
{
|
||
coff_data_type *coff;
|
||
|
||
size_t readsize; /* length of file_info */
|
||
SCNHDR *external_sections;
|
||
|
||
/* Build a play area */
|
||
if (coff_mkobject(abfd) != true)
|
||
return 0;
|
||
coff = coff_data(abfd);
|
||
|
||
|
||
external_sections = (SCNHDR *)bfd_alloc(abfd, readsize = (nscns * SCNHSZ));
|
||
|
||
if (bfd_read((PTR)external_sections, 1, readsize, abfd) != readsize) {
|
||
goto fail;
|
||
}
|
||
|
||
|
||
/* Now copy data as required; construct all asections etc */
|
||
coff->symbol_index_slew = 0;
|
||
coff->relocbase =0;
|
||
coff->raw_syment_count = 0;
|
||
coff->raw_linenos = 0;
|
||
coff->raw_syments = 0;
|
||
coff->sym_filepos =0;
|
||
coff->flags = internal_f->f_flags;
|
||
if (nscns != 0) {
|
||
unsigned int i;
|
||
for (i = 0; i < nscns; i++) {
|
||
struct internal_scnhdr tmp;
|
||
coff_swap_scnhdr_in(abfd, external_sections + i, &tmp);
|
||
make_a_section_from_file(abfd,&tmp);
|
||
}
|
||
}
|
||
/* Determine the machine architecture and type. */
|
||
abfd->obj_machine = 0;
|
||
switch (internal_f->f_magic) {
|
||
#ifdef I386MAGIC
|
||
case I386MAGIC:
|
||
abfd->obj_arch = bfd_arch_i386;
|
||
abfd->obj_machine = 0;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef A29K_MAGIC_BIG
|
||
case A29K_MAGIC_BIG:
|
||
case A29K_MAGIC_LITTLE:
|
||
abfd->obj_arch = bfd_arch_a29k;
|
||
abfd->obj_machine = 0;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef MIPS
|
||
case MIPS_MAGIC_1:
|
||
case MIPS_MAGIC_2:
|
||
case MIPS_MAGIC_3:
|
||
abfd->obj_arch = bfd_arch_mips;
|
||
abfd->obj_machine = 0;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef MC68MAGIC
|
||
case MC68MAGIC:
|
||
case M68MAGIC:
|
||
abfd->obj_arch = bfd_arch_m68k;
|
||
abfd->obj_machine = 68020;
|
||
break;
|
||
#endif
|
||
#ifdef MC88MAGIC
|
||
case MC88MAGIC:
|
||
case MC88DMAGIC:
|
||
case MC88OMAGIC:
|
||
abfd->obj_arch = bfd_arch_m88k;
|
||
abfd->obj_machine = 88100;
|
||
break;
|
||
#endif
|
||
#ifdef I960
|
||
#ifdef I960ROMAGIC
|
||
case I960ROMAGIC:
|
||
case I960RWMAGIC:
|
||
abfd->obj_arch = bfd_arch_i960;
|
||
switch (F_I960TYPE & internal_f->f_flags)
|
||
{
|
||
default:
|
||
case F_I960CORE:
|
||
abfd->obj_machine = bfd_mach_i960_core;
|
||
break;
|
||
case F_I960KB:
|
||
abfd->obj_machine = bfd_mach_i960_kb_sb;
|
||
break;
|
||
case F_I960MC:
|
||
abfd->obj_machine = bfd_mach_i960_mc;
|
||
break;
|
||
case F_I960XA:
|
||
abfd->obj_machine = bfd_mach_i960_xa;
|
||
break;
|
||
case F_I960CA:
|
||
abfd->obj_machine = bfd_mach_i960_ca;
|
||
break;
|
||
case F_I960KA:
|
||
abfd->obj_machine = bfd_mach_i960_ka_sa;
|
||
break;
|
||
|
||
}
|
||
break;
|
||
#endif
|
||
#endif
|
||
|
||
default: /* Unreadable input file type */
|
||
abfd->obj_arch = bfd_arch_obscure;
|
||
break;
|
||
}
|
||
|
||
if (!(internal_f->f_flags & F_RELFLG))
|
||
abfd->flags |= HAS_RELOC;
|
||
if ((internal_f->f_flags & F_EXEC))
|
||
abfd->flags |= EXEC_P;
|
||
if (!(internal_f->f_flags & F_LNNO))
|
||
abfd->flags |= HAS_LINENO;
|
||
if (!(internal_f->f_flags & F_LSYMS))
|
||
abfd->flags |= HAS_LOCALS;
|
||
|
||
|
||
bfd_get_symcount(abfd) = internal_f->f_nsyms;
|
||
if (internal_f->f_nsyms)
|
||
abfd->flags |= HAS_SYMS;
|
||
|
||
coff->sym_filepos = internal_f->f_symptr;
|
||
|
||
/* These members communicate important constants about the symbol table
|
||
to GDB's symbol-reading code. These `constants' unfortunately vary
|
||
from coff implementation to implementation... */
|
||
#ifndef NO_COFF_SYMBOLS
|
||
coff->local_n_btmask = N_BTMASK;
|
||
coff->local_n_btshft = N_BTSHFT;
|
||
coff->local_n_tmask = N_TMASK;
|
||
coff->local_n_tshift = N_TSHIFT;
|
||
coff->local_symesz = SYMESZ;
|
||
coff->local_auxesz = AUXESZ;
|
||
coff->local_linesz = LINESZ;
|
||
#endif
|
||
|
||
coff->symbols = (coff_symbol_type *) NULL;
|
||
bfd_get_start_address(abfd) = internal_f->f_opthdr ? internal_a->entry : 0;
|
||
|
||
return abfd->xvec;
|
||
fail:
|
||
bfd_release(abfd, coff);
|
||
return (bfd_target *)NULL;
|
||
}
|
||
|
||
static bfd_target *
|
||
DEFUN(coff_object_p,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
int nscns;
|
||
FILHDR filehdr;
|
||
AOUTHDR opthdr;
|
||
struct internal_filehdr internal_f;
|
||
struct internal_aouthdr internal_a;
|
||
|
||
bfd_error = system_call_error;
|
||
|
||
/* figure out how much to read */
|
||
if (bfd_read((PTR) &filehdr, 1, FILHSZ, abfd) != FILHSZ)
|
||
return 0;
|
||
|
||
bfd_swap_filehdr_in(abfd, &filehdr, &internal_f);
|
||
|
||
if (BADMAG(internal_f)) {
|
||
bfd_error = wrong_format;
|
||
return 0;
|
||
}
|
||
nscns =internal_f.f_nscns;
|
||
|
||
if (internal_f.f_opthdr) {
|
||
if (bfd_read((PTR) &opthdr, 1,AOUTSZ, abfd) != AOUTSZ) {
|
||
return 0;
|
||
}
|
||
bfd_swap_aouthdr_in(abfd, (char *)&opthdr, (char *)&internal_a);
|
||
}
|
||
|
||
/* Seek past the opt hdr stuff */
|
||
bfd_seek(abfd, internal_f.f_opthdr + FILHSZ, SEEK_SET);
|
||
|
||
/* if the optional header is NULL or not the correct size then
|
||
quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
|
||
and Intel 960 readwrite headers (I960WRMAGIC) is that the
|
||
optional header is of a different size.
|
||
|
||
But the mips keeps extra stuff in it's opthdr, so dont check
|
||
when doing that
|
||
*/
|
||
|
||
#ifndef MIPS
|
||
if (internal_f.f_opthdr != 0 && AOUTSZ != internal_f.f_opthdr)
|
||
return (bfd_target *)NULL;
|
||
#endif
|
||
|
||
return coff_real_object_p(abfd, nscns, &internal_f, &internal_a);
|
||
}
|
||
|
||
|
||
|
||
#ifndef NO_COFF_LINENOS
|
||
|
||
static void
|
||
DEFUN(coff_count_linenumbers,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
unsigned int limit = bfd_get_symcount(abfd);
|
||
unsigned int i;
|
||
asymbol **p;
|
||
{
|
||
asection *s = abfd->sections->output_section;
|
||
while (s) {
|
||
BFD_ASSERT(s->lineno_count == 0);
|
||
s = s->next;
|
||
}
|
||
}
|
||
|
||
|
||
for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) {
|
||
asymbol *q_maybe = *p;
|
||
if (q_maybe->the_bfd->xvec->flavour == bfd_target_coff_flavour_enum) {
|
||
coff_symbol_type *q = coffsymbol(q_maybe);
|
||
if (q->lineno) {
|
||
/*
|
||
This symbol has a linenumber, increment the owning
|
||
section's linenumber count
|
||
*/
|
||
alent *l = q->lineno;
|
||
q->symbol.section->output_section->lineno_count++;
|
||
l++;
|
||
while (l->line_number) {
|
||
q->symbol.section->output_section->lineno_count++;
|
||
l++;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
#endif /* NO_COFF_LINENOS */
|
||
|
||
#ifndef NO_COFF_SYMBOLS
|
||
|
||
/*
|
||
Takes a bfd and a symbol, returns a pointer to the coff specific area
|
||
of the symbol if there is one.
|
||
*/
|
||
static coff_symbol_type *
|
||
DEFUN(coff_symbol_from,(ignore_abfd, symbol),
|
||
bfd *ignore_abfd AND
|
||
asymbol *symbol)
|
||
{
|
||
if (symbol->the_bfd->xvec->flavour != bfd_target_coff_flavour_enum)
|
||
return (coff_symbol_type *)NULL;
|
||
|
||
if (symbol->the_bfd->tdata == (PTR)NULL)
|
||
return (coff_symbol_type *)NULL;
|
||
|
||
return (coff_symbol_type *) symbol;
|
||
}
|
||
|
||
|
||
|
||
static void
|
||
DEFUN(fixup_symbol_value,(coff_symbol_ptr, syment),
|
||
coff_symbol_type *coff_symbol_ptr AND
|
||
struct internal_syment *syment)
|
||
{
|
||
|
||
/* Normalize the symbol flags */
|
||
if (coff_symbol_ptr->symbol.flags & BSF_FORT_COMM) {
|
||
/* a common symbol is undefined with a value */
|
||
syment->n_scnum = N_UNDEF;
|
||
syment->n_value = coff_symbol_ptr->symbol.value;
|
||
}
|
||
else if (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) {
|
||
syment->n_value = coff_symbol_ptr->symbol.value;
|
||
}
|
||
else if (coff_symbol_ptr->symbol.flags & BSF_UNDEFINED) {
|
||
syment->n_scnum = N_UNDEF;
|
||
syment->n_value = 0;
|
||
}
|
||
else if (coff_symbol_ptr->symbol.flags & BSF_ABSOLUTE) {
|
||
syment->n_scnum = N_ABS;
|
||
syment->n_value = coff_symbol_ptr->symbol.value;
|
||
}
|
||
else {
|
||
syment->n_scnum =
|
||
coff_symbol_ptr->symbol.section->output_section->index+1;
|
||
|
||
syment->n_value =
|
||
coff_symbol_ptr->symbol.value +
|
||
coff_symbol_ptr->symbol.section->output_offset +
|
||
coff_symbol_ptr->symbol.section->output_section->vma;
|
||
}
|
||
}
|
||
|
||
/* run through all the symbols in the symbol table and work out what
|
||
their indexes into the symbol table will be when output
|
||
|
||
Coff requires that each C_FILE symbol points to the next one in the
|
||
chain, and that the last one points to the first external symbol. We
|
||
do that here too.
|
||
|
||
*/
|
||
static void
|
||
DEFUN(coff_renumber_symbols,(bfd_ptr),
|
||
bfd *bfd_ptr)
|
||
{
|
||
unsigned int symbol_count = bfd_get_symcount(bfd_ptr);
|
||
asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
|
||
unsigned int native_index = 0;
|
||
struct internal_syment *last_file = (struct internal_syment *)NULL;
|
||
unsigned int symbol_index;
|
||
for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
|
||
{
|
||
coff_symbol_type *coff_symbol_ptr = coff_symbol_from(bfd_ptr, symbol_ptr_ptr[symbol_index]);
|
||
if (coff_symbol_ptr && coff_symbol_ptr->native) {
|
||
combined_entry_type *s = coff_symbol_ptr->native;
|
||
int i;
|
||
|
||
if (s->u.syment.n_sclass == C_FILE)
|
||
{
|
||
if (last_file != (struct internal_syment *)NULL) {
|
||
last_file->n_value = native_index;
|
||
}
|
||
last_file = &(s->u.syment);
|
||
}
|
||
else {
|
||
|
||
/* Modify the symbol values according to their section and
|
||
type */
|
||
|
||
fixup_symbol_value(coff_symbol_ptr, &(s->u.syment));
|
||
}
|
||
for (i = 0; i < s->u.syment.n_numaux + 1; i++) {
|
||
s[i].offset = native_index ++;
|
||
}
|
||
}
|
||
else {
|
||
native_index++;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/*
|
||
Run thorough the symbol table again, and fix it so that all pointers to
|
||
entries are changed to the entries' index in the output symbol table.
|
||
|
||
*/
|
||
static void
|
||
DEFUN(coff_mangle_symbols,(bfd_ptr),
|
||
bfd *bfd_ptr)
|
||
{
|
||
unsigned int symbol_count = bfd_get_symcount(bfd_ptr);
|
||
asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
|
||
|
||
unsigned int symbol_index;
|
||
|
||
|
||
for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
|
||
{
|
||
coff_symbol_type *coff_symbol_ptr = coff_symbol_from(bfd_ptr, symbol_ptr_ptr[symbol_index]);
|
||
if (coff_symbol_ptr && coff_symbol_ptr->native ) {
|
||
int i;
|
||
combined_entry_type *s = coff_symbol_ptr->native;
|
||
|
||
|
||
|
||
|
||
|
||
for (i = 0; i < s->u.syment.n_numaux ; i++) {
|
||
combined_entry_type *a = s + i + 1;
|
||
if (a->fix_tag) {
|
||
a->u.auxent.x_sym.x_tagndx.l = a->u.auxent.x_sym.x_tagndx.p->offset;
|
||
}
|
||
if (a->fix_end) {
|
||
a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l =
|
||
a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset;
|
||
}
|
||
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
#if 0
|
||
unsigned int symbol_count = bfd_get_symcount(bfd_ptr);
|
||
asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
|
||
struct internal_syment *last_tagndx = (struct internal_syment *)NULL;
|
||
struct internal_syment *last_file = (struct internal_syment *)NULL;
|
||
struct internal_syment *last_fcn = (struct internal_syment *)NULL;
|
||
struct internal_syment *block_stack[50];
|
||
struct internal_syment **last_block = &block_stack[0];
|
||
boolean first_time = true;
|
||
unsigned int symbol_index;
|
||
unsigned int native_index = 0;
|
||
|
||
for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) {
|
||
coff_symbol_type *coff_symbol_ptr =
|
||
coff_symbol_from(bfd_ptr, symbol_ptr_ptr[symbol_index]);
|
||
if (coff_symbol_ptr == (coff_symbol_type *)NULL) {
|
||
/*
|
||
This symbol has no coff information in it, it will take up
|
||
only one slot in the output symbol table
|
||
*/
|
||
native_index++;
|
||
}
|
||
else {
|
||
struct internal_syment *syment = coff_symbol_ptr->native;
|
||
if (syment == (struct internal_syment *)NULL) {
|
||
native_index++;
|
||
}
|
||
else {
|
||
/* Normalize the symbol flags */
|
||
if (coff_symbol_ptr->symbol.flags & BSF_FORT_COMM) {
|
||
/* a common symbol is undefined with a value */
|
||
syment->n_scnum = N_UNDEF;
|
||
syment->n_value = coff_symbol_ptr->symbol.value;
|
||
}
|
||
else if (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) {
|
||
syment->n_value = coff_symbol_ptr->symbol.value;
|
||
}
|
||
else if (coff_symbol_ptr->symbol.flags & BSF_UNDEFINED) {
|
||
syment->n_scnum = N_UNDEF;
|
||
syment->n_value = 0;
|
||
}
|
||
else if (coff_symbol_ptr->symbol.flags & BSF_ABSOLUTE) {
|
||
syment->n_scnum = N_ABS;
|
||
syment->n_value = coff_symbol_ptr->symbol.value;
|
||
}
|
||
else {
|
||
syment->n_scnum =
|
||
coff_symbol_ptr->symbol.section->output_section->index+1;
|
||
|
||
syment->n_value =
|
||
coff_symbol_ptr->symbol.value +
|
||
coff_symbol_ptr->symbol.section->output_offset +
|
||
coff_symbol_ptr->symbol.section->output_section->vma;
|
||
}
|
||
|
||
|
||
/* If this symbol ties up something then do it */
|
||
|
||
if (syment->n_sclass == C_FILE && last_file != (struct internal_syment *)NULL)
|
||
{
|
||
last_file->n_value = native_index;
|
||
}
|
||
else if ((syment->n_sclass == C_EXT
|
||
|| syment->n_sclass == C_STAT
|
||
#ifdef C_LEAFEXT
|
||
|| syment->n_sclass == C_LEAFEXT
|
||
|| syment->n_sclass == C_LEAFSTAT
|
||
#endif
|
||
)
|
||
&& last_fcn != (struct internal_syment *)NULL)
|
||
{
|
||
union internal_auxent *auxent = (union internal_auxent *)(last_fcn+1);
|
||
auxent->x_sym.x_fcnary.x_fcn.x_endndx.l = native_index;
|
||
last_fcn = (struct internal_syment *)NULL;
|
||
|
||
}
|
||
else if (syment->n_sclass == C_EOS && last_tagndx != (struct internal_syment*)NULL)
|
||
{
|
||
union internal_auxent *auxent = (union internal_auxent *)(last_tagndx+1);
|
||
/* Remember that we keep the native index in the offset
|
||
so patch the beginning of the struct to point to this
|
||
*/
|
||
/*if (last_
|
||
auxent->x_sym.x_tagndx = last_tagndx->_n._n_n._n_offset;*/
|
||
auxent->x_sym.x_fcnary.x_fcn.x_endndx.l = syment->n_numaux + 1 + native_index;
|
||
/* Now point the eos to the structure */
|
||
auxent = (union internal_auxent *)(syment+1);
|
||
auxent->x_sym.x_tagndx.l = last_tagndx->_n._n_n._n_offset;
|
||
}
|
||
else if (syment->n_sclass == C_BLOCK
|
||
&& coff_symbol_ptr->symbol.name[1] == 'e')
|
||
{
|
||
union internal_auxent *auxent = (union internal_auxent *)((*(--last_block))+1);
|
||
auxent->x_sym.x_fcnary.x_fcn.x_endndx.l = native_index + syment->n_numaux + 1;
|
||
}
|
||
if (syment->n_sclass == C_EXT
|
||
&& !ISFCN(syment->n_type)
|
||
&& first_time == true
|
||
&& last_file != (struct internal_syment *)NULL) {
|
||
/* This is the first external symbol seen which isn't a
|
||
function place it in the last .file entry */
|
||
last_file->n_value = native_index;
|
||
first_time = false;
|
||
}
|
||
#ifdef C_LEAFPROC
|
||
if (syment->n_sclass == C_LEAFPROC &&
|
||
syment->n_numaux == 2) {
|
||
union internal_auxent *auxent = (union internal_auxent *)(syment+2);
|
||
/* This is the definition of a leaf proc, we'll relocate the
|
||
address */
|
||
auxent->x_bal.x_balntry =
|
||
coff_symbol_ptr->symbol.section->output_offset +
|
||
coff_symbol_ptr->symbol.section->output_section->vma +
|
||
auxent->x_bal.x_balntry ;
|
||
}
|
||
#endif
|
||
/* If this symbol needs to be tied up then remember some facts */
|
||
if (syment->n_sclass == C_FILE)
|
||
{
|
||
last_file = syment;
|
||
}
|
||
if (syment->n_numaux != 0) {
|
||
/*
|
||
If this symbol would like to point to something in the
|
||
future then remember where it is
|
||
*/
|
||
if (uses_x_sym_x_tagndx_p(bfd_ptr, syment)) {
|
||
/*
|
||
If this is a ref to a structure then we'll tie it up
|
||
now - there are never any forward refs for one
|
||
*/
|
||
if (syment->n_sclass == C_STRTAG ||
|
||
syment->n_sclass == C_ENTAG ||
|
||
syment->n_sclass == C_UNTAG) {
|
||
last_tagndx = syment;
|
||
}
|
||
else {
|
||
/*
|
||
This is a ref to a structure - the structure must
|
||
have been defined within the same file, and previous
|
||
to this point, so we can deduce the new tagndx
|
||
directly.
|
||
*/
|
||
union internal_auxent *auxent = (union internal_auxent *)(syment+1);
|
||
bfd *bfd_ptr = coff_symbol_ptr->symbol.the_bfd;
|
||
struct internal_syment *base = obj_raw_syments(bfd_ptr);
|
||
/* auxent->x_sym.x_tagndx = base[auxent->x_sym.x_tagndx]._n._n_n._n_offset;*/
|
||
|
||
|
||
}
|
||
}
|
||
if (ISFCN(syment->n_type)) {
|
||
last_fcn = syment;
|
||
}
|
||
if (syment->n_sclass == C_BLOCK
|
||
&& coff_symbol_ptr->symbol.name[1] == 'b')
|
||
{
|
||
*last_block++ = syment;
|
||
}
|
||
}
|
||
syment->_n._n_n._n_offset = native_index;
|
||
native_index = native_index + 1 + syment->n_numaux;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
#endif
|
||
static int string_size;
|
||
static void
|
||
DEFUN(coff_fix_symbol_name,(ignore_abfd, symbol, native),
|
||
bfd *ignore_abfd AND
|
||
asymbol *symbol AND
|
||
combined_entry_type *native)
|
||
{
|
||
unsigned int name_length;
|
||
union internal_auxent *auxent;
|
||
char * name = ( char *)(symbol->name);
|
||
|
||
if (name == (char *) NULL) {
|
||
/* coff symbols always have names, so we'll make one up */
|
||
symbol->name = "strange";
|
||
name = (char *)symbol->name;
|
||
}
|
||
name_length = strlen(name);
|
||
|
||
if (native->u.syment.n_sclass == C_FILE) {
|
||
strncpy(native->u.syment._n._n_name, ".file", SYMNMLEN);
|
||
auxent = &(native+1)->u.auxent;
|
||
|
||
#ifdef COFF_LONG_FILENAMES
|
||
if (name_length <= FILNMLEN) {
|
||
strncpy(auxent->x_file.x_fname, name, FILNMLEN);
|
||
}
|
||
else {
|
||
auxent->x_file.x_n.x_offset = string_size + 4;
|
||
auxent->x_file.x_n.x_zeroes = 0;
|
||
string_size += name_length + 1;
|
||
}
|
||
#else
|
||
strncpy(auxent->x_file.x_fname, name, FILNMLEN);
|
||
if (name_length > FILNMLEN) {
|
||
name[FILNMLEN] = '\0';
|
||
}
|
||
#endif
|
||
}
|
||
else
|
||
{ /* NOT A C_FILE SYMBOL */
|
||
if (name_length <= SYMNMLEN) {
|
||
/* This name will fit into the symbol neatly */
|
||
strncpy(native->u.syment._n._n_name, symbol->name, SYMNMLEN);
|
||
}
|
||
else {
|
||
native->u.syment._n._n_n._n_offset = string_size + 4;
|
||
native->u.syment._n._n_n._n_zeroes = 0;
|
||
string_size += name_length + 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
static unsigned int
|
||
DEFUN(coff_write_symbol,(abfd, symbol, native, written),
|
||
bfd *abfd AND
|
||
asymbol *symbol AND
|
||
combined_entry_type *native AND
|
||
unsigned int written)
|
||
{
|
||
unsigned int numaux = native->u.syment.n_numaux;
|
||
int type = native->u.syment.n_type;
|
||
int class = native->u.syment.n_sclass;
|
||
SYMENT buf;
|
||
unsigned int j;
|
||
|
||
coff_fix_symbol_name(abfd, symbol, native);
|
||
coff_swap_sym_out(abfd, &native->u.syment, &buf);
|
||
bfd_write((PTR)& buf, 1, SYMESZ, abfd);
|
||
for (j = 0; j != native->u.syment.n_numaux; j++)
|
||
{
|
||
AUXENT buf1;
|
||
coff_swap_aux_out(abfd,
|
||
&( (native + j + 1)->u.auxent), type, class, &buf1);
|
||
bfd_write((PTR) (&buf1), 1, AUXESZ, abfd);
|
||
}
|
||
/*
|
||
Reuse somewhere in the symbol to keep the index
|
||
*/
|
||
set_index(symbol, written);
|
||
return written + 1 + numaux;
|
||
}
|
||
|
||
|
||
static unsigned int
|
||
DEFUN(coff_write_alien_symbol,(abfd, symbol, written),
|
||
bfd *abfd AND
|
||
asymbol *symbol AND
|
||
unsigned int written)
|
||
{
|
||
/*
|
||
This symbol has been created by the loader, or come from a non
|
||
coff format. It has no native element to inherit, make our
|
||
own
|
||
*/
|
||
combined_entry_type *native;
|
||
combined_entry_type dummy;
|
||
native = &dummy;
|
||
native->u.syment.n_type = T_NULL;
|
||
#ifdef I960
|
||
native->u.syment.n_flags = 0;
|
||
#endif
|
||
if (symbol->flags & BSF_ABSOLUTE) {
|
||
native->u.syment.n_scnum = N_ABS;
|
||
native->u.syment.n_value = symbol->value;
|
||
}
|
||
else if (symbol->flags & (BSF_UNDEFINED | BSF_FORT_COMM)) {
|
||
native->u.syment.n_scnum = N_UNDEF;
|
||
native->u.syment.n_value = symbol->value;
|
||
}
|
||
else if (symbol->flags & BSF_DEBUGGING) {
|
||
/*
|
||
remove name so it doesn't take up any space
|
||
*/
|
||
symbol->name = "";
|
||
}
|
||
else {
|
||
native->u.syment.n_scnum = symbol->section->output_section->index +
|
||
1;
|
||
native->u.syment.n_value = symbol->value +
|
||
symbol->section->output_section->vma +
|
||
symbol->section->output_offset;
|
||
#ifdef I960
|
||
/* Copy the any flags from the the file hdr into the symbol */
|
||
{
|
||
coff_symbol_type *c = coff_symbol_from(abfd, symbol);
|
||
if (c != (coff_symbol_type *)NULL) {
|
||
native->u.syment.n_flags = c->symbol.the_bfd->flags;
|
||
}
|
||
}
|
||
#endif
|
||
}
|
||
|
||
#ifdef HASPAD1
|
||
native->u.syment.pad1[0] = 0;
|
||
native->u.syment.pad1[0] = 0;
|
||
#endif
|
||
|
||
native->u.syment.n_type = 0;
|
||
if (symbol->flags & BSF_LOCAL)
|
||
native->u.syment.n_sclass = C_STAT;
|
||
else
|
||
native->u.syment.n_sclass = C_EXT;
|
||
native->u.syment.n_numaux = 0;
|
||
|
||
return coff_write_symbol(abfd, symbol, native, written);
|
||
}
|
||
|
||
static unsigned int
|
||
DEFUN(coff_write_native_symbol,(abfd, symbol, written),
|
||
bfd *abfd AND
|
||
coff_symbol_type *symbol AND
|
||
unsigned int written)
|
||
{
|
||
/*
|
||
Does this symbol have an ascociated line number - if so then
|
||
make it remember this symbol index. Also tag the auxent of
|
||
this symbol to point to the right place in the lineno table
|
||
*/
|
||
combined_entry_type *native = symbol->native;
|
||
|
||
alent *lineno = symbol->lineno;
|
||
|
||
if (lineno) {
|
||
unsigned int count = 0;
|
||
lineno[count].u.offset = written;
|
||
if (native->u.syment.n_numaux) {
|
||
union internal_auxent *a = &((native+1)->u.auxent);
|
||
|
||
a->x_sym.x_fcnary.x_fcn.x_lnnoptr =
|
||
symbol->symbol.section->output_section->moving_line_filepos;
|
||
}
|
||
/*
|
||
And count and relocate all other linenumbers
|
||
*/
|
||
count++;
|
||
while (lineno[count].line_number) {
|
||
lineno[count].u.offset +=
|
||
symbol->symbol.section->output_section->vma +
|
||
symbol->symbol.section->output_offset;
|
||
count++;
|
||
}
|
||
symbol->symbol.section->output_section->moving_line_filepos +=
|
||
count * LINESZ;
|
||
|
||
}
|
||
return coff_write_symbol(abfd, &( symbol->symbol), native,written);
|
||
}
|
||
|
||
static void
|
||
DEFUN(coff_write_symbols,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
unsigned int i;
|
||
unsigned int limit = bfd_get_symcount(abfd);
|
||
unsigned int written = 0;
|
||
|
||
asymbol **p;
|
||
|
||
string_size = 0;
|
||
|
||
|
||
/* Seek to the right place */
|
||
bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET);
|
||
|
||
/* Output all the symbols we have */
|
||
|
||
written = 0;
|
||
for (p = abfd->outsymbols, i = 0; i < limit; i++, p++)
|
||
{
|
||
asymbol *symbol = *p;
|
||
coff_symbol_type *c_symbol = coff_symbol_from(abfd, symbol);
|
||
|
||
|
||
|
||
if (c_symbol == (coff_symbol_type *) NULL ||
|
||
c_symbol->native == (combined_entry_type *)NULL)
|
||
{
|
||
written = coff_write_alien_symbol(abfd, symbol, written);
|
||
}
|
||
else
|
||
{
|
||
written = coff_write_native_symbol(abfd, c_symbol, written);
|
||
}
|
||
|
||
}
|
||
|
||
bfd_get_symcount(abfd) = written;
|
||
|
||
/* Now write out strings */
|
||
|
||
if (string_size != 0)
|
||
{
|
||
unsigned int size = string_size + 4;
|
||
bfd_byte buffer[4];
|
||
|
||
bfd_h_put_32(abfd, size, buffer);
|
||
bfd_write((PTR) buffer, 1, sizeof(buffer), abfd);
|
||
for (p = abfd->outsymbols, i = 0; i < limit; i++, p++)
|
||
{
|
||
asymbol *q = *p;
|
||
size_t name_length = strlen(q->name);
|
||
int maxlen;
|
||
coff_symbol_type* c_symbol = coff_symbol_from(abfd, q);
|
||
maxlen = ((c_symbol != NULL && c_symbol->native != NULL) &&
|
||
(c_symbol->native->u.syment.n_sclass == C_FILE)) ?
|
||
FILNMLEN : SYMNMLEN;
|
||
|
||
if (name_length > maxlen) {
|
||
bfd_write((PTR) (q->name), 1, name_length + 1, abfd);
|
||
}
|
||
}
|
||
}
|
||
else {
|
||
/* We would normally not write anything here, but we'll write
|
||
out 4 so that any stupid coff reader which tries to read
|
||
the string table even when there isn't one won't croak.
|
||
*/
|
||
|
||
uint32e_type size = 4;
|
||
size = size;
|
||
bfd_write((PTR)&size, 1, sizeof(size), abfd);
|
||
|
||
}
|
||
}
|
||
|
||
/*doc*
|
||
@subsubsection Writing Relocations
|
||
To write a relocations, all the back end does is step though the
|
||
canonical relocation table, and create an @code{internal_reloc}. The
|
||
symbol index to use is removed from the @code{offset} field in the
|
||
symbol table supplied, the address comes directly from the sum of the
|
||
section base address and the relocation offset and the type is dug
|
||
directly from the howto field.
|
||
|
||
Then the @code{internal_reloc} is swapped into the shape of an
|
||
@code{external_reloc} and written out to disk.
|
||
*/
|
||
|
||
static void
|
||
DEFUN(coff_write_relocs,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
asection *s;
|
||
for (s = abfd->sections; s != (asection *) NULL; s = s->next) {
|
||
unsigned int i;
|
||
struct external_reloc dst;
|
||
|
||
arelent **p = s->orelocation;
|
||
bfd_seek(abfd, s->rel_filepos, SEEK_SET);
|
||
for (i = 0; i < s->reloc_count; i++) {
|
||
struct internal_reloc n;
|
||
arelent *q = p[i];
|
||
memset((PTR)&n, 0, sizeof(n));
|
||
n.r_vaddr = q->address + s->vma;
|
||
if (q->sym_ptr_ptr) {
|
||
n.r_symndx = get_index((*(q->sym_ptr_ptr)));
|
||
}
|
||
#ifdef SELECT_RELOC
|
||
/* Work out reloc type from what is required */
|
||
SELECT_RELOC(n.r_type, q->howto);
|
||
#else
|
||
n.r_type = q->howto->type;
|
||
#endif
|
||
bfd_swap_reloc_out(abfd, &n, &dst);
|
||
bfd_write((PTR) &n, 1, RELSZ, abfd);
|
||
}
|
||
}
|
||
}
|
||
#endif /* NO_COFF_SYMBOLS */
|
||
|
||
#ifndef NO_COFF_LINENOS
|
||
|
||
static void
|
||
DEFUN(coff_write_linenumbers,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
asection *s;
|
||
for (s = abfd->sections; s != (asection *) NULL; s = s->next) {
|
||
if (s->lineno_count) {
|
||
asymbol **q = abfd->outsymbols;
|
||
bfd_seek(abfd, s->line_filepos, SEEK_SET);
|
||
/* Find all the linenumbers in this section */
|
||
while (*q) {
|
||
asymbol *p = *q;
|
||
alent *l = BFD_SEND(p->the_bfd, _get_lineno, (p->the_bfd, p));
|
||
if (l) {
|
||
/* Found a linenumber entry, output */
|
||
struct internal_lineno out;
|
||
LINENO buff;
|
||
memset( (PTR)&out, 0, sizeof(out));
|
||
out.l_lnno = 0;
|
||
out.l_addr.l_symndx = l->u.offset;
|
||
coff_swap_lineno_out(abfd, &out, &buff);
|
||
bfd_write((PTR) &buff, 1, LINESZ, abfd);
|
||
l++;
|
||
while (l->line_number) {
|
||
out.l_lnno = l->line_number;
|
||
out.l_addr.l_symndx = l->u.offset;
|
||
coff_swap_lineno_out(abfd, &out, &buff);
|
||
bfd_write((PTR) &buff, 1, LINESZ, abfd);
|
||
l++;
|
||
}
|
||
}
|
||
q++;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static alent *
|
||
DEFUN(coff_get_lineno,(ignore_abfd, symbol),
|
||
bfd *ignore_abfd AND
|
||
asymbol *symbol)
|
||
{
|
||
return coffsymbol(symbol)->lineno;
|
||
}
|
||
|
||
#endif /* NO_COFF_LINENOS */
|
||
|
||
static asymbol *
|
||
coff_make_empty_symbol(abfd)
|
||
bfd *abfd;
|
||
{
|
||
coff_symbol_type *new = (coff_symbol_type *) bfd_alloc(abfd, sizeof(coff_symbol_type));
|
||
if (new == NULL) {
|
||
bfd_error = no_memory;
|
||
return (NULL);
|
||
} /* on error */
|
||
new->native = 0;
|
||
new->lineno = (alent *) NULL;
|
||
new->symbol.the_bfd = abfd;
|
||
return &new->symbol;
|
||
}
|
||
|
||
#ifndef NO_COFF_SYMBOLS
|
||
|
||
static void
|
||
DEFUN(coff_print_symbol,(ignore_abfd, filep, symbol, how),
|
||
bfd *ignore_abfd AND
|
||
PTR filep AND
|
||
asymbol *symbol AND
|
||
bfd_print_symbol_enum_type how)
|
||
{
|
||
FILE *file = (FILE *)filep;
|
||
switch (how) {
|
||
case bfd_print_symbol_name_enum:
|
||
fprintf(file, "%s", symbol->name);
|
||
break;
|
||
case bfd_print_symbol_type_enum:
|
||
fprintf(file, "coff %lx %lx", (unsigned long) coffsymbol(symbol)->native,
|
||
(unsigned long) coffsymbol(symbol)->lineno);
|
||
break;
|
||
case bfd_print_symbol_all_enum:
|
||
{
|
||
CONST char *section_name = symbol->section == (asection *) NULL ?
|
||
"*abs" : symbol->section->name;
|
||
bfd_print_symbol_vandf((PTR) file, symbol);
|
||
|
||
fprintf(file, " %-5s %s %s %s",
|
||
section_name,
|
||
coffsymbol(symbol)->native ? "n" : "g",
|
||
coffsymbol(symbol)->lineno ? "l" : " ",
|
||
symbol->name);
|
||
}
|
||
|
||
|
||
break;
|
||
}
|
||
}
|
||
|
||
#endif /* NO_COFF_SYMBOLS */
|
||
|
||
/* Set flags and magic number of a coff file from architecture and machine
|
||
type. Result is true if we can represent the arch&type, false if not. */
|
||
|
||
static boolean
|
||
DEFUN(coff_set_flags,(abfd, magicp, flagsp),
|
||
bfd *abfd AND
|
||
unsigned *magicp AND
|
||
unsigned short *flagsp)
|
||
{
|
||
|
||
switch (abfd->obj_arch) {
|
||
|
||
#ifdef I960ROMAGIC
|
||
|
||
case bfd_arch_i960:
|
||
|
||
{
|
||
unsigned flags;
|
||
*magicp = I960ROMAGIC;
|
||
/*
|
||
((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
|
||
I960RWMAGIC); FIXME???
|
||
*/
|
||
switch (abfd->obj_machine) {
|
||
case bfd_mach_i960_core:
|
||
flags = F_I960CORE;
|
||
break;
|
||
case bfd_mach_i960_kb_sb:
|
||
flags = F_I960KB;
|
||
break;
|
||
case bfd_mach_i960_mc:
|
||
flags = F_I960MC;
|
||
break;
|
||
case bfd_mach_i960_xa:
|
||
flags = F_I960XA;
|
||
break;
|
||
case bfd_mach_i960_ca:
|
||
flags = F_I960CA;
|
||
break;
|
||
case bfd_mach_i960_ka_sa:
|
||
flags = F_I960KA;
|
||
break;
|
||
default:
|
||
return false;
|
||
}
|
||
*flagsp = flags;
|
||
return true;
|
||
}
|
||
break;
|
||
#endif
|
||
#ifdef MIPS
|
||
case bfd_arch_mips:
|
||
*magicp = MIPS_MAGIC_2;
|
||
return true;
|
||
break;
|
||
#endif
|
||
#ifdef I386MAGIC
|
||
case bfd_arch_i386:
|
||
*magicp = I386MAGIC;
|
||
return true;
|
||
#endif
|
||
#ifdef MC68MAGIC
|
||
case bfd_arch_m68k:
|
||
*magicp = MC68MAGIC;
|
||
return true;
|
||
#endif
|
||
|
||
#ifdef MC88MAGIC
|
||
case bfd_arch_m88k:
|
||
*magicp = MC88OMAGIC;
|
||
return true;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef A29K_MAGIC_BIG
|
||
case bfd_arch_a29k:
|
||
if (abfd->xvec->byteorder_big_p)
|
||
*magicp = A29K_MAGIC_BIG;
|
||
else
|
||
*magicp = A29K_MAGIC_LITTLE;
|
||
return true;
|
||
break;
|
||
#endif
|
||
|
||
default: /* Unknown architecture */
|
||
/* return false; -- fall through to "return false" below, to avoid
|
||
"statement never reached" errors on the one below. */
|
||
break;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
|
||
static boolean
|
||
DEFUN(coff_set_arch_mach,(abfd, arch, machine),
|
||
bfd *abfd AND
|
||
enum bfd_architecture arch AND
|
||
unsigned long machine)
|
||
{
|
||
unsigned dummy1;
|
||
unsigned short dummy2;
|
||
abfd->obj_arch = arch;
|
||
abfd->obj_machine = machine;
|
||
if (arch != bfd_arch_unknown &&
|
||
coff_set_flags(abfd, &dummy1, &dummy2) != true)
|
||
return false; /* We can't represent this type */
|
||
return true; /* We're easy ... */
|
||
}
|
||
|
||
|
||
/* Calculate the file position for each section. */
|
||
|
||
static void
|
||
DEFUN(coff_compute_section_file_positions,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
asection *current;
|
||
file_ptr sofar = FILHSZ;
|
||
if (bfd_get_start_address(abfd)) {
|
||
/*
|
||
A start address may have been added to the original file. In this
|
||
case it will need an optional header to record it.
|
||
*/
|
||
abfd->flags |= EXEC_P;
|
||
}
|
||
if (abfd->flags & EXEC_P)
|
||
sofar += AOUTSZ;
|
||
|
||
|
||
sofar += abfd->section_count * SCNHSZ;
|
||
for (current = abfd->sections;
|
||
current != (asection *)NULL;
|
||
current = current->next) {
|
||
/* Only deal with sections which have contents */
|
||
if (!(current->flags & SEC_HAS_CONTENTS))
|
||
continue;
|
||
|
||
/* Align the sections in the file to the same boundary on
|
||
which they are aligned in virtual memory. I960 doesn't
|
||
do this (FIXME) so we can stay in sync with Intel. 960
|
||
doesn't yet page from files... */
|
||
#ifndef I960
|
||
sofar = ALIGN(sofar, 1 << current->alignment_power);
|
||
#endif
|
||
/* FIXME, in demand paged files, the low order bits of the file
|
||
offset must match the low order bits of the virtual address.
|
||
"Low order" is apparently implementation defined. Add code
|
||
here to round sofar up to match the virtual address. */
|
||
|
||
current->filepos = sofar;
|
||
sofar += current->size;
|
||
}
|
||
obj_relocbase(abfd) = sofar;
|
||
}
|
||
|
||
|
||
|
||
|
||
/* SUPPRESS 558 */
|
||
/* SUPPRESS 529 */
|
||
static boolean
|
||
DEFUN(coff_write_object_contents,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
asection *current;
|
||
boolean hasrelocs = false;
|
||
boolean haslinno = false;
|
||
file_ptr reloc_base;
|
||
file_ptr lineno_base;
|
||
file_ptr sym_base;
|
||
file_ptr scn_base;
|
||
file_ptr data_base;
|
||
unsigned long reloc_size = 0;
|
||
unsigned long lnno_size = 0;
|
||
asection *text_sec = NULL;
|
||
asection *data_sec = NULL;
|
||
asection *bss_sec = NULL;
|
||
|
||
struct internal_filehdr internal_f;
|
||
struct internal_aouthdr internal_a;
|
||
|
||
|
||
bfd_error = system_call_error;
|
||
|
||
|
||
if(abfd->output_has_begun == false) {
|
||
coff_compute_section_file_positions(abfd);
|
||
}
|
||
|
||
if (abfd->sections != (asection *)NULL) {
|
||
scn_base = abfd->sections->filepos;
|
||
}
|
||
else {
|
||
scn_base = 0;
|
||
}
|
||
if (bfd_seek(abfd, scn_base, SEEK_SET) != 0)
|
||
return false;
|
||
reloc_base = obj_relocbase(abfd);
|
||
|
||
/* Make a pass through the symbol table to count line number entries and
|
||
put them into the correct asections */
|
||
|
||
#ifndef NO_COFF_LINENOS
|
||
coff_count_linenumbers(abfd);
|
||
#endif
|
||
data_base = scn_base;
|
||
|
||
/* Work out the size of the reloc and linno areas */
|
||
|
||
for (current = abfd->sections; current != NULL; current = current->next) {
|
||
reloc_size += current->reloc_count * RELSZ;
|
||
#ifndef NO_COFF_LINENOS
|
||
lnno_size += current->lineno_count * LINESZ;
|
||
#endif
|
||
data_base += SCNHSZ;
|
||
}
|
||
|
||
lineno_base = reloc_base + reloc_size;
|
||
sym_base = lineno_base + lnno_size;
|
||
|
||
/* Indicate in each section->line_filepos its actual file address */
|
||
for (current = abfd->sections; current != NULL; current = current->next) {
|
||
if (current->lineno_count) {
|
||
current->line_filepos = lineno_base;
|
||
current->moving_line_filepos = lineno_base;
|
||
#ifndef NO_COFF_LINENOS
|
||
lineno_base += current->lineno_count * LINESZ;
|
||
#endif
|
||
}
|
||
else {
|
||
current->line_filepos = 0;
|
||
}
|
||
if (current->reloc_count) {
|
||
current->rel_filepos = reloc_base;
|
||
reloc_base += current->reloc_count * sizeof(struct internal_reloc);
|
||
}
|
||
else {
|
||
current->rel_filepos = 0;
|
||
}
|
||
}
|
||
|
||
/* Write section headers to the file. */
|
||
|
||
bfd_seek(abfd,
|
||
(file_ptr) ((abfd->flags & EXEC_P) ?
|
||
(FILHSZ + AOUTSZ) : FILHSZ),
|
||
SEEK_SET);
|
||
|
||
{
|
||
#if 0
|
||
unsigned int pad = abfd->flags & D_PAGED ? data_base : 0;
|
||
#endif
|
||
unsigned int pad = 0;
|
||
|
||
for (current = abfd->sections; current != NULL; current = current->next) {
|
||
struct internal_scnhdr section;
|
||
strncpy(&(section.s_name[0]), current->name, 8);
|
||
section.s_vaddr = current->vma + pad;
|
||
section.s_paddr = current->vma + pad;
|
||
section.s_size = current->size - pad;
|
||
/*
|
||
If this section has no size or is unloadable then the scnptr
|
||
will be 0 too
|
||
*/
|
||
if (current->size - pad == 0 ||
|
||
(current->flags & SEC_LOAD) == 0) {
|
||
section.s_scnptr = 0;
|
||
|
||
}
|
||
else {
|
||
section.s_scnptr = current->filepos;
|
||
}
|
||
section.s_relptr = current->rel_filepos;
|
||
section.s_lnnoptr = current->line_filepos;
|
||
section.s_nreloc = current->reloc_count;
|
||
section.s_nlnno = current->lineno_count;
|
||
if (current->reloc_count != 0)
|
||
hasrelocs = true;
|
||
if (current->lineno_count != 0)
|
||
haslinno = true;
|
||
|
||
section.s_flags = sec_to_styp_flags(current->name,current->flags);
|
||
|
||
if (!strcmp(current->name, _TEXT)) {
|
||
text_sec = current;
|
||
} else if (!strcmp(current->name, _DATA)) {
|
||
data_sec = current;
|
||
} else if (!strcmp(current->name, _BSS)) {
|
||
bss_sec = current;
|
||
}
|
||
|
||
#ifdef I960
|
||
section.s_align = (current->alignment_power
|
||
? 1 << current->alignment_power
|
||
: 0);
|
||
|
||
#endif
|
||
{
|
||
SCNHDR buff;
|
||
|
||
swap_scnhdr_out(abfd, §ion, &buff);
|
||
bfd_write((PTR) (&buff), 1, SCNHSZ, abfd);
|
||
|
||
}
|
||
pad = 0;
|
||
}
|
||
}
|
||
|
||
/* OK, now set up the filehdr... */
|
||
internal_f.f_nscns = abfd->section_count;
|
||
/*
|
||
We will NOT put a fucking timestamp in the header here. Every time you
|
||
put it back, I will come in and take it out again. I'm sorry. This
|
||
field does not belong here. We fill it with a 0 so it compares the
|
||
same but is not a reasonable time. -- gnu@cygnus.com
|
||
*/
|
||
/*
|
||
Well, I like it, so I'm conditionally compiling it in.
|
||
steve@cygnus.com
|
||
*/
|
||
#ifdef COFF_TIMESTAMP
|
||
internal_f.f_timdat = time(0);
|
||
#else
|
||
internal_f.f_timdat = 0;
|
||
#endif
|
||
|
||
if (bfd_get_symcount(abfd) != 0)
|
||
internal_f.f_symptr = sym_base;
|
||
else
|
||
internal_f.f_symptr = 0;
|
||
|
||
internal_f.f_flags = 0;
|
||
|
||
if (abfd->flags & EXEC_P)
|
||
internal_f.f_opthdr = AOUTSZ;
|
||
else
|
||
internal_f.f_opthdr = 0;
|
||
|
||
if (!hasrelocs)
|
||
internal_f.f_flags |= F_RELFLG;
|
||
if (!haslinno)
|
||
internal_f.f_flags |= F_LNNO;
|
||
if (0 == bfd_get_symcount(abfd))
|
||
internal_f.f_flags |= F_LSYMS;
|
||
if (abfd->flags & EXEC_P)
|
||
internal_f.f_flags |= F_EXEC;
|
||
#if M88
|
||
internal_f.f_flags |= F_AR32W;
|
||
#else
|
||
if (!abfd->xvec->byteorder_big_p)
|
||
internal_f.f_flags |= F_AR32WR;
|
||
#endif
|
||
/*
|
||
FIXME, should do something about the other byte orders and
|
||
architectures.
|
||
*/
|
||
|
||
/* Set up architecture-dependent stuff */
|
||
|
||
{ unsigned int magic = 0;
|
||
unsigned short flags = 0;
|
||
coff_set_flags(abfd, &magic, &flags);
|
||
internal_f.f_magic = magic;
|
||
internal_f.f_flags |= flags;
|
||
/* ...and the "opt"hdr... */
|
||
|
||
#ifdef A29K
|
||
# ifdef ULTRA3 /* NYU's machine */
|
||
/* FIXME: This is a bogus check. I really want to see if there
|
||
* is a .shbss or a .shdata section, if so then set the magic
|
||
* number to indicate a shared data executable.
|
||
*/
|
||
if (internal_f.f_nscns >= 7)
|
||
internal_a.magic = SHMAGIC; /* Shared magic */
|
||
else
|
||
# endif /* ULTRA3 */
|
||
internal_a.magic = NMAGIC; /* Assume separate i/d */
|
||
#define __A_MAGIC_SET__
|
||
#endif /* A29K */
|
||
#ifdef I960
|
||
internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
|
||
#define __A_MAGIC_SET__
|
||
#endif /* I960 */
|
||
#if M88
|
||
#define __A_MAGIC_SET__
|
||
internal_a.magic = PAGEMAGICBCS;
|
||
#endif /* M88 */
|
||
|
||
#if M68 || I386 || MIPS
|
||
#define __A_MAGIC_SET__
|
||
/* Never was anything here for the 68k */
|
||
#endif /* M88 */
|
||
|
||
#ifndef __A_MAGIC_SET__
|
||
# include "Your aouthdr magic number is not being set!"
|
||
#else
|
||
# undef __A_MAGIC_SET__
|
||
#endif
|
||
}
|
||
/* Now should write relocs, strings, syms */
|
||
obj_sym_filepos(abfd) = sym_base;
|
||
|
||
#ifndef NO_COFF_SYMBOLS
|
||
if (bfd_get_symcount(abfd) != 0) {
|
||
coff_renumber_symbols(abfd);
|
||
coff_mangle_symbols(abfd);
|
||
coff_write_symbols(abfd);
|
||
coff_write_linenumbers(abfd);
|
||
coff_write_relocs(abfd);
|
||
}
|
||
#endif /* NO_COFF_SYMBOLS */
|
||
if (text_sec) {
|
||
internal_a.tsize = text_sec->size;
|
||
internal_a.text_start =text_sec->size ? text_sec->vma : 0;
|
||
}
|
||
if (data_sec) {
|
||
internal_a.dsize = data_sec->size;
|
||
internal_a.data_start = data_sec->size ? data_sec->vma : 0;
|
||
}
|
||
if (bss_sec) {
|
||
internal_a.bsize = bss_sec->size;
|
||
}
|
||
|
||
internal_a.entry = bfd_get_start_address(abfd);
|
||
internal_f.f_nsyms = bfd_get_symcount(abfd);
|
||
|
||
/* now write them */
|
||
if (bfd_seek(abfd, 0L, SEEK_SET) != 0)
|
||
return false;
|
||
{
|
||
FILHDR buff;
|
||
bfd_swap_filehdr_out(abfd, &internal_f, &buff);
|
||
bfd_write((PTR) &buff, 1, FILHSZ, abfd);
|
||
}
|
||
if (abfd->flags & EXEC_P) {
|
||
AOUTHDR buff;
|
||
bfd_swap_aouthdr_out(abfd, &internal_a, &buff);
|
||
bfd_write((PTR) &buff, 1, AOUTSZ, abfd);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
#ifndef NO_COFF_SYMBOLS
|
||
|
||
/*
|
||
this function transforms the offsets into the symbol table into
|
||
pointers to syments.
|
||
*/
|
||
|
||
|
||
static void
|
||
DEFUN(coff_pointerize_aux,(ignore_abfd, table_base, type, class, auxent),
|
||
bfd *ignore_abfd AND
|
||
combined_entry_type *table_base AND
|
||
int type AND
|
||
int class AND
|
||
combined_entry_type *auxent)
|
||
{
|
||
/* Don't bother if this is a file or a section */
|
||
if (class == C_STAT && type == T_NULL) return;
|
||
if (class == C_FILE) return;
|
||
|
||
/* Otherwise patch up */
|
||
if (ISFCN(type) || ISTAG(class) || class == C_BLOCK) {
|
||
auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = table_base +
|
||
auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l;
|
||
auxent->fix_end = 1;
|
||
}
|
||
if (auxent->u.auxent.x_sym.x_tagndx.l != 0) {
|
||
auxent->u.auxent.x_sym.x_tagndx.p = table_base + auxent->u.auxent.x_sym.x_tagndx.l;
|
||
auxent->fix_tag = 1;
|
||
}
|
||
}
|
||
|
||
#endif /* NO_COFF_SYMBOLS */
|
||
|
||
static boolean
|
||
DEFUN(coff_set_section_contents,(abfd, section, location, offset, count),
|
||
bfd *abfd AND
|
||
sec_ptr section AND
|
||
PTR location AND
|
||
file_ptr offset AND
|
||
bfd_size_type count)
|
||
{
|
||
if (abfd->output_has_begun == false) /* set by bfd.c handler */
|
||
coff_compute_section_file_positions(abfd);
|
||
|
||
bfd_seek(abfd, (file_ptr) (section->filepos + offset), SEEK_SET);
|
||
|
||
if (count != 0) {
|
||
return (bfd_write(location, 1, count, abfd) == count) ? true : false;
|
||
}
|
||
return true;
|
||
}
|
||
#if 0
|
||
static boolean
|
||
coff_close_and_cleanup(abfd)
|
||
bfd *abfd;
|
||
{
|
||
if (!bfd_read_p(abfd))
|
||
switch (abfd->format) {
|
||
case bfd_archive:
|
||
if (!_bfd_write_archive_contents(abfd))
|
||
return false;
|
||
break;
|
||
case bfd_object:
|
||
if (!coff_write_object_contents(abfd))
|
||
return false;
|
||
break;
|
||
default:
|
||
bfd_error = invalid_operation;
|
||
return false;
|
||
}
|
||
|
||
/* We depend on bfd_close to free all the memory on the obstack. */
|
||
/* FIXME if bfd_release is not using obstacks! */
|
||
return true;
|
||
}
|
||
|
||
#endif
|
||
static PTR
|
||
buy_and_read(abfd, where, seek_direction, size)
|
||
bfd *abfd;
|
||
file_ptr where;
|
||
int seek_direction;
|
||
size_t size;
|
||
{
|
||
PTR area = (PTR) bfd_alloc(abfd, size);
|
||
if (!area) {
|
||
bfd_error = no_memory;
|
||
return (NULL);
|
||
}
|
||
bfd_seek(abfd, where, seek_direction);
|
||
if (bfd_read(area, 1, size, abfd) != size) {
|
||
bfd_error = system_call_error;
|
||
return (NULL);
|
||
} /* on error */
|
||
return (area);
|
||
} /* buy_and_read() */
|
||
|
||
|
||
#ifndef NO_COFF_SYMBOLS
|
||
|
||
static char *
|
||
DEFUN(build_string_table,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
char string_table_size_buffer[4];
|
||
unsigned int string_table_size;
|
||
char *string_table;
|
||
/*
|
||
At this point we should be "seek"'d to the end of the
|
||
symbols === the symbol table size.
|
||
*/
|
||
|
||
if (bfd_read((char *) string_table_size_buffer,
|
||
sizeof(string_table_size_buffer),
|
||
1, abfd) != sizeof(string_table_size)) {
|
||
bfd_error = system_call_error;
|
||
return (NULL);
|
||
} /* on error */
|
||
|
||
string_table_size = bfd_h_get_32(abfd, (bfd_byte *) string_table_size_buffer);
|
||
|
||
if ((string_table = (PTR) bfd_alloc(abfd, string_table_size -= 4)) == NULL) {
|
||
bfd_error = no_memory;
|
||
return (NULL);
|
||
} /* on mallocation error */
|
||
if (bfd_read(string_table, string_table_size, 1, abfd) != string_table_size) {
|
||
bfd_error = system_call_error;
|
||
return (NULL);
|
||
}
|
||
return string_table;
|
||
}
|
||
|
||
/* Return a pointer to a malloc'd copy of 'name'. 'name' may not be
|
||
\0-terminated, but will not exceed 'maxlen' characters. The copy *will*
|
||
be \0-terminated. */
|
||
static char *
|
||
DEFUN(copy_name,(abfd, name, maxlen),
|
||
bfd *abfd AND
|
||
char *name AND
|
||
int maxlen)
|
||
{
|
||
int len;
|
||
char *newname;
|
||
|
||
for (len = 0; len < maxlen; ++len) {
|
||
if (name[len] == '\0') {
|
||
break;
|
||
}
|
||
}
|
||
|
||
if ((newname = (PTR) bfd_alloc(abfd, len+1)) == NULL) {
|
||
bfd_error = no_memory;
|
||
return (NULL);
|
||
}
|
||
strncpy(newname, name, len);
|
||
newname[len] = '\0';
|
||
return newname;
|
||
}
|
||
|
||
|
||
/*
|
||
read a symbol table into freshly mallocated memory, swap it, and knit the
|
||
symbol names into a normalized form. By normalized here I mean that all
|
||
symbols have an n_offset pointer that points to a NULL terminated string.
|
||
Oh, and the first symbol MUST be a C_FILE. If there wasn't one there
|
||
before, put one there.
|
||
*/
|
||
|
||
static combined_entry_type *
|
||
DEFUN(get_normalized_symtab,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
|
||
combined_entry_type *internal;
|
||
combined_entry_type *internal_ptr;
|
||
combined_entry_type *internal_end;
|
||
SYMENT *raw;
|
||
SYMENT *raw_src;
|
||
SYMENT *raw_end;
|
||
char *string_table = NULL;
|
||
unsigned long size;
|
||
|
||
|
||
unsigned int raw_size;
|
||
if (obj_raw_syments(abfd) != (combined_entry_type *)NULL) {
|
||
return obj_raw_syments(abfd);
|
||
}
|
||
if ((size = bfd_get_symcount(abfd) * sizeof(combined_entry_type)) == 0) {
|
||
bfd_error = no_symbols;
|
||
return (NULL);
|
||
}
|
||
|
||
internal = (combined_entry_type *)bfd_alloc(abfd, size);
|
||
internal_end = internal + bfd_get_symcount(abfd);
|
||
|
||
raw_size = bfd_get_symcount(abfd) * SYMESZ;
|
||
raw = (SYMENT *)bfd_alloc(abfd,raw_size);
|
||
|
||
if (bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET) == -1
|
||
|| bfd_read((PTR)raw, raw_size, 1, abfd) != raw_size) {
|
||
bfd_error = system_call_error;
|
||
return (NULL);
|
||
}
|
||
/* mark the end of the symbols */
|
||
raw_end = raw + bfd_get_symcount(abfd);
|
||
/*
|
||
FIXME SOMEDAY. A string table size of zero is very weird, but
|
||
probably possible. If one shows up, it will probably kill us.
|
||
*/
|
||
|
||
/* Swap all the raw entries */
|
||
for (raw_src = raw, internal_ptr = internal; raw_src < raw_end; raw_src++, internal_ptr++) {
|
||
unsigned int i;
|
||
coff_swap_sym_in(abfd, (char *)raw_src, (char *)&internal_ptr->u.syment);
|
||
internal_ptr->fix_tag = 0;
|
||
internal_ptr->fix_end = 0;
|
||
|
||
for (i = internal_ptr->u.syment.n_numaux; i; --i, raw_src++, internal_ptr++) {
|
||
(internal_ptr+1)->fix_tag = 0;
|
||
(internal_ptr+1)->fix_end = 0;
|
||
|
||
coff_swap_aux_in(abfd, (char *)(raw_src +1), internal_ptr->u.syment.n_type,
|
||
internal_ptr->u.syment.n_sclass, & (internal_ptr+1)->u.auxent);
|
||
|
||
coff_pointerize_aux(abfd,
|
||
internal,
|
||
internal_ptr->u.syment.n_type,
|
||
internal_ptr->u.syment.n_sclass,
|
||
internal_ptr +1);
|
||
}
|
||
}
|
||
|
||
/* Free all the raw stuff */
|
||
bfd_release(abfd, raw_src);
|
||
|
||
for (internal_ptr = internal; internal_ptr < internal_end;
|
||
internal_ptr ++)
|
||
{
|
||
if (internal_ptr->u.syment.n_sclass == C_FILE) {
|
||
/* make a file symbol point to the name in the auxent, since
|
||
the text ".file" is redundant */
|
||
if ((internal_ptr+1)->u.auxent.x_file.x_n.x_zeroes == 0) {
|
||
/* the filename is a long one, point into the string table
|
||
*/
|
||
if (string_table == NULL) {
|
||
string_table = build_string_table(abfd);
|
||
}
|
||
|
||
internal_ptr->u.syment._n._n_n._n_offset =
|
||
(int) (string_table - 4 +
|
||
(internal_ptr+1)->u.auxent.x_file.x_n.x_offset);
|
||
}
|
||
else {
|
||
/* ordinary short filename, put into memory anyway */
|
||
internal_ptr->u.syment._n._n_n._n_offset = (int)
|
||
copy_name(abfd, (internal_ptr+1)->u.auxent.x_file.x_fname, FILNMLEN);
|
||
|
||
}
|
||
}
|
||
else {
|
||
if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) {
|
||
/*
|
||
This is a "short" name. Make it long.
|
||
*/
|
||
unsigned long i = 0;
|
||
char *newstring = NULL;
|
||
/*
|
||
find the length of this string without walking into memory
|
||
that isn't ours.
|
||
*/
|
||
|
||
for (i = 0; i < 8; ++i) {
|
||
if (internal_ptr->u.syment._n._n_name[i] == '\0') {
|
||
break;
|
||
} /* if end of string */
|
||
} /* possible lengths of this string. */
|
||
|
||
if ((newstring = (PTR) bfd_alloc(abfd, ++i)) == NULL) {
|
||
bfd_error = no_memory;
|
||
return (NULL);
|
||
} /* on error */
|
||
bzero(newstring, i);
|
||
strncpy(newstring, internal_ptr->u.syment._n._n_name, i-1);
|
||
internal_ptr->u.syment._n._n_n._n_offset = (int) newstring;
|
||
internal_ptr->u.syment._n._n_n._n_zeroes = 0;
|
||
|
||
}
|
||
else {
|
||
/* This is a long name already. Just point it at the string in memory. */
|
||
if (string_table == NULL) {
|
||
string_table = build_string_table(abfd);
|
||
}
|
||
internal_ptr->u.syment._n._n_n._n_offset =
|
||
(int) (string_table - 4 + internal_ptr->u.syment._n._n_n._n_offset);
|
||
}
|
||
}
|
||
internal_ptr += internal_ptr->u.syment.n_numaux;
|
||
}
|
||
|
||
obj_raw_syments(abfd) = internal;
|
||
obj_string_table(abfd) = string_table;
|
||
|
||
return (internal);
|
||
} /* get_normalized_symtab() */
|
||
|
||
#endif /* NO_COFF_SYMBOLS */
|
||
|
||
static
|
||
struct sec *
|
||
DEFUN(section_from_bfd_index,(abfd, index),
|
||
bfd *abfd AND
|
||
int index)
|
||
{
|
||
if (index > 0) {
|
||
struct sec *answer = abfd->sections;
|
||
while (--index) {
|
||
answer = answer->next;
|
||
}
|
||
return answer;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
#ifndef NO_COFF_LINENOS
|
||
|
||
/*doc*
|
||
@subsubsection Reading Linenumbers
|
||
Createing the linenumber table is done by reading in the entire coff
|
||
linenumber table, and creating another table for internal use.
|
||
|
||
A coff line number table is structured so that each
|
||
function is marked as having a line number of 0. Each line within the
|
||
function is an offset from the first line in the function. The base of
|
||
the line number information for the table is stored in the symbol
|
||
associated with the function.
|
||
|
||
The information is copied from the external to the internal table, and
|
||
each symbol which marks a function is marked by pointing its...
|
||
|
||
**How does this work ?**
|
||
|
||
*/
|
||
|
||
static boolean
|
||
coff_slurp_line_table(abfd, asect)
|
||
bfd *abfd;
|
||
asection *asect;
|
||
{
|
||
LINENO *native_lineno;
|
||
alent *lineno_cache;
|
||
|
||
BFD_ASSERT(asect->lineno == (alent *) NULL);
|
||
|
||
native_lineno = (LINENO *) buy_and_read(abfd,
|
||
asect->line_filepos,
|
||
SEEK_SET,
|
||
(size_t) (LINESZ *
|
||
asect->lineno_count));
|
||
lineno_cache =
|
||
(alent *) bfd_alloc(abfd, (size_t) ((asect->lineno_count + 1) * sizeof(alent)));
|
||
if (lineno_cache == NULL) {
|
||
bfd_error = no_memory;
|
||
return false;
|
||
} else {
|
||
unsigned int counter = 0;
|
||
alent *cache_ptr = lineno_cache;
|
||
LINENO *src = native_lineno;
|
||
|
||
while (counter < asect->lineno_count) {
|
||
struct internal_lineno dst;
|
||
coff_swap_lineno_in(abfd, src, &dst);
|
||
cache_ptr->line_number = dst.l_lnno;
|
||
|
||
if (cache_ptr->line_number == 0) {
|
||
coff_symbol_type *sym =
|
||
(coff_symbol_type *) (dst.l_addr.l_symndx
|
||
+ obj_symbol_slew(abfd)
|
||
+ obj_raw_syments(abfd))->u.syment._n._n_n._n_zeroes;
|
||
cache_ptr->u.sym = (asymbol *) sym;
|
||
sym->lineno = cache_ptr;
|
||
}
|
||
else {
|
||
cache_ptr->u.offset = dst.l_addr.l_paddr
|
||
- bfd_section_vma(abfd, asect);
|
||
} /* If no linenumber expect a symbol index */
|
||
|
||
cache_ptr++;
|
||
src++;
|
||
counter++;
|
||
}
|
||
cache_ptr->line_number = 0;
|
||
|
||
}
|
||
asect->lineno = lineno_cache;
|
||
/* FIXME, free native_lineno here, or use alloca or something. */
|
||
return true;
|
||
} /* coff_slurp_line_table() */
|
||
|
||
#endif /* NO_COFF_LINENOS */
|
||
|
||
#ifndef NO_COFF_LINENOS
|
||
|
||
static boolean
|
||
DEFUN(coff_slurp_symbol_table,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
combined_entry_type *native_symbols;
|
||
coff_symbol_type *cached_area;
|
||
unsigned int *table_ptr;
|
||
|
||
unsigned int number_of_symbols = 0;
|
||
if (obj_symbols(abfd))
|
||
return true;
|
||
bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET);
|
||
|
||
/* Read in the symbol table */
|
||
if ((native_symbols = get_normalized_symtab(abfd)) == NULL) {
|
||
return (false);
|
||
} /* on error */
|
||
|
||
|
||
/* Allocate enough room for all the symbols in cached form */
|
||
cached_area =
|
||
(coff_symbol_type *)
|
||
bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(coff_symbol_type)));
|
||
|
||
if (cached_area == NULL) {
|
||
bfd_error = no_memory;
|
||
return false;
|
||
} /* on error */
|
||
table_ptr =
|
||
(unsigned int *)
|
||
bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(unsigned int)));
|
||
|
||
if (table_ptr == NULL) {
|
||
bfd_error = no_memory;
|
||
return false;
|
||
} else {
|
||
coff_symbol_type *dst = cached_area;
|
||
unsigned int last_native_index = bfd_get_symcount(abfd);
|
||
unsigned int this_index = 0;
|
||
while (this_index < last_native_index) {
|
||
combined_entry_type *src = native_symbols + this_index;
|
||
table_ptr[this_index] = number_of_symbols;
|
||
dst->symbol.the_bfd = abfd;
|
||
|
||
dst->symbol.name = (char *)(src->u.syment._n._n_n._n_offset);
|
||
/*
|
||
We use the native name field to point to the cached field
|
||
*/
|
||
src->u.syment._n._n_n._n_zeroes = (int) dst;
|
||
dst->symbol.section = section_from_bfd_index(abfd,
|
||
src->u.syment.n_scnum);
|
||
switch (src->u.syment.n_sclass) {
|
||
#ifdef I960
|
||
case C_LEAFEXT:
|
||
#if 0
|
||
dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
|
||
dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
|
||
dst->symbol.flags |= BSF_NOT_AT_END;
|
||
#endif
|
||
/* Fall through to next case */
|
||
|
||
#endif
|
||
|
||
case C_EXT:
|
||
if ((src->u.syment.n_scnum) == 0) {
|
||
if ((src->u.syment.n_value) == 0) {
|
||
dst->symbol.flags = BSF_UNDEFINED;
|
||
dst->symbol.value= 0;
|
||
}
|
||
else {
|
||
dst->symbol.flags = BSF_FORT_COMM;
|
||
dst->symbol.value = (src->u.syment.n_value);
|
||
}
|
||
}
|
||
else {
|
||
/*
|
||
Base the value as an index from the base of the
|
||
section
|
||
*/
|
||
if (dst->symbol.section == (asection *) NULL) {
|
||
dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL | BSF_ABSOLUTE;
|
||
dst->symbol.value = src->u.syment.n_value;
|
||
}
|
||
else {
|
||
dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
|
||
dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
|
||
}
|
||
if (ISFCN((src->u.syment.n_type))) {
|
||
/*
|
||
A function ext does not go at the end of a file
|
||
*/
|
||
dst->symbol.flags |= BSF_NOT_AT_END;
|
||
}
|
||
}
|
||
|
||
break;
|
||
case C_STAT: /* static */
|
||
#ifdef I960
|
||
case C_LEAFSTAT: /* static leaf procedure */
|
||
#endif
|
||
case C_LABEL: /* label */
|
||
dst->symbol.flags = BSF_LOCAL;
|
||
/*
|
||
Base the value as an index from the base of the section
|
||
*/
|
||
dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma;
|
||
break;
|
||
|
||
case C_MOS: /* member of structure */
|
||
case C_EOS: /* end of structure */
|
||
#ifdef NOTDEF /* C_AUTOARG has the same value */
|
||
#ifdef C_GLBLREG
|
||
case C_GLBLREG: /* A29k-specific storage class */
|
||
#endif
|
||
#endif
|
||
case C_REGPARM: /* register parameter */
|
||
case C_REG: /* register variable */
|
||
#ifdef C_AUTOARG
|
||
case C_AUTOARG: /* 960-specific storage class */
|
||
#endif
|
||
case C_TPDEF: /* type definition */
|
||
|
||
case C_ARG:
|
||
case C_AUTO: /* automatic variable */
|
||
case C_FIELD: /* bit field */
|
||
case C_ENTAG: /* enumeration tag */
|
||
case C_MOE: /* member of enumeration */
|
||
case C_MOU: /* member of union */
|
||
case C_UNTAG: /* union tag */
|
||
|
||
dst->symbol.flags = BSF_DEBUGGING;
|
||
dst->symbol.value = (src->u.syment.n_value);
|
||
break;
|
||
|
||
case C_FILE: /* file name */
|
||
case C_STRTAG: /* structure tag */
|
||
dst->symbol.flags = BSF_DEBUGGING;
|
||
dst->symbol.value = (src->u.syment.n_value);
|
||
|
||
break;
|
||
case C_BLOCK: /* ".bb" or ".eb" */
|
||
case C_FCN: /* ".bf" or ".ef" */
|
||
case C_EFCN: /* physical end of function */
|
||
dst->symbol.flags = BSF_LOCAL;
|
||
/*
|
||
Base the value as an index from the base of the section
|
||
*/
|
||
dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma;
|
||
|
||
break;
|
||
case C_NULL:
|
||
case C_EXTDEF: /* external definition */
|
||
case C_ULABEL: /* undefined label */
|
||
case C_USTATIC: /* undefined static */
|
||
case C_LINE: /* line # reformatted as symbol table entry */
|
||
case C_ALIAS: /* duplicate tag */
|
||
case C_HIDDEN: /* ext symbol in dmert public lib */
|
||
|
||
default:
|
||
|
||
fprintf(stderr,"Unrecognized storage class %d\n",
|
||
src->u.syment.n_sclass);
|
||
abort();
|
||
dst->symbol.flags = BSF_DEBUGGING;
|
||
dst->symbol.value = (src->u.syment.n_value);
|
||
|
||
break;
|
||
}
|
||
|
||
BFD_ASSERT(dst->symbol.flags != 0);
|
||
|
||
dst->native = src;
|
||
|
||
dst->symbol.udata = 0;
|
||
dst->lineno = (alent *) NULL;
|
||
this_index += (src->u.syment.n_numaux) + 1;
|
||
dst++;
|
||
number_of_symbols++;
|
||
} /* walk the native symtab */
|
||
} /* bfdize the native symtab */
|
||
|
||
obj_symbols(abfd) = cached_area;
|
||
obj_raw_syments(abfd) = native_symbols;
|
||
|
||
bfd_get_symcount(abfd) = number_of_symbols;
|
||
obj_convert(abfd) = table_ptr;
|
||
/* Slurp the line tables for each section too */
|
||
{
|
||
asection *p;
|
||
p = abfd->sections;
|
||
while (p) {
|
||
coff_slurp_line_table(abfd, p);
|
||
p = p->next;
|
||
}
|
||
}
|
||
return true;
|
||
} /* coff_slurp_symbol_table() */
|
||
|
||
static unsigned int
|
||
coff_get_symtab_upper_bound(abfd)
|
||
bfd *abfd;
|
||
{
|
||
if (!coff_slurp_symbol_table(abfd))
|
||
return 0;
|
||
|
||
return (bfd_get_symcount(abfd) + 1) * (sizeof(coff_symbol_type *));
|
||
}
|
||
|
||
|
||
static unsigned int
|
||
coff_get_symtab(abfd, alocation)
|
||
bfd *abfd;
|
||
asymbol **alocation;
|
||
{
|
||
unsigned int counter = 0;
|
||
coff_symbol_type *symbase;
|
||
coff_symbol_type **location = (coff_symbol_type **) (alocation);
|
||
if (!coff_slurp_symbol_table(abfd))
|
||
return 0;
|
||
|
||
for (symbase = obj_symbols(abfd); counter++ < bfd_get_symcount(abfd);)
|
||
*(location++) = symbase++;
|
||
*location++ = 0;
|
||
return bfd_get_symcount(abfd);
|
||
}
|
||
|
||
#endif /* NO_COFF_SYMBOLS */
|
||
|
||
static unsigned int
|
||
coff_get_reloc_upper_bound(abfd, asect)
|
||
bfd *abfd;
|
||
sec_ptr asect;
|
||
{
|
||
if (bfd_get_format(abfd) != bfd_object) {
|
||
bfd_error = invalid_operation;
|
||
return 0;
|
||
}
|
||
return (asect->reloc_count + 1) * sizeof(arelent *);
|
||
}
|
||
|
||
/*doc*
|
||
@subsubsection Reading Relocations
|
||
Coff relocations are easily transformed into the internal BFD form
|
||
(@code{arelent}).
|
||
|
||
Reading a coff relocation table is done in the following stages:
|
||
@itemize @bullet
|
||
@item
|
||
The entire coff relocation table is read into memory.
|
||
@item
|
||
Each relocation is processed in turn, first it is swapped from the
|
||
external to the internal form.
|
||
@item
|
||
The symbol referenced in the relocation's symbol index is turned into
|
||
a pointer into the canonical symbol table. Note that this table is the
|
||
same as the one returned by a call to @code{bfd_canonicalize_symtab}.
|
||
The back end will call the routine and save the result if a
|
||
canonicalization hasn't been done.
|
||
@item
|
||
The reloc index is turned into a pointer to a howto structure, in a
|
||
back end specific way. For instance, the 386 and 960 use the
|
||
@code{r_type} to directly produce an index into a howto table vector;
|
||
the 88k subtracts a number from the @code{r_type} field and creates an
|
||
addend field.
|
||
@end itemize
|
||
*/
|
||
|
||
static boolean
|
||
DEFUN(coff_slurp_reloc_table,(abfd, asect, symbols),
|
||
bfd *abfd AND
|
||
sec_ptr asect AND
|
||
asymbol **symbols)
|
||
{
|
||
RELOC *native_relocs;
|
||
arelent *reloc_cache;
|
||
if (asect->relocation)
|
||
return true;
|
||
if (asect->reloc_count == 0)
|
||
return true;
|
||
#ifndef NO_COFF_SYMBOLS
|
||
if (!coff_slurp_symbol_table(abfd))
|
||
return false;
|
||
#endif
|
||
native_relocs =
|
||
(RELOC *) buy_and_read(abfd,
|
||
asect->rel_filepos,
|
||
SEEK_SET,
|
||
(size_t) (RELSZ *
|
||
asect->reloc_count));
|
||
reloc_cache = (arelent *)
|
||
bfd_alloc(abfd, (size_t) (asect->reloc_count * sizeof(arelent)));
|
||
|
||
if (reloc_cache == NULL) {
|
||
bfd_error = no_memory;
|
||
return false;
|
||
} { /* on error */
|
||
arelent *cache_ptr;
|
||
RELOC *src;
|
||
for (cache_ptr = reloc_cache,
|
||
src = native_relocs;
|
||
cache_ptr < reloc_cache + asect->reloc_count;
|
||
cache_ptr++,
|
||
src++) {
|
||
struct internal_reloc dst;
|
||
asymbol *ptr;
|
||
bfd_swap_reloc_in(abfd, src, &dst);
|
||
|
||
dst.r_symndx += obj_symbol_slew(abfd);
|
||
cache_ptr->sym_ptr_ptr = symbols + obj_convert(abfd)[dst.r_symndx];
|
||
#ifdef A29K
|
||
/* AMD has two relocation entries for the 'consth' instruction.
|
||
* The first is R_IHIHALF (part 1), the second is R_IHCONST
|
||
* (part 2). The second entry's r_symndx does not contain
|
||
* an index to a symbol but rather a value (apparently).
|
||
* Also, see the ifdef below for saving the r_symndx value in addend.
|
||
*/
|
||
if (dst.r_type == R_IHCONST) {
|
||
ptr = NULL;
|
||
} else
|
||
#endif
|
||
ptr = *(cache_ptr->sym_ptr_ptr);
|
||
cache_ptr->address = dst.r_vaddr;
|
||
/*
|
||
The symbols definitions that we have read in have been
|
||
relocated as if their sections started at 0. But the offsets
|
||
refering to the symbols in the raw data have not been
|
||
modified, so we have to have a negative addend to compensate.
|
||
|
||
Note that symbols which used to be common must be left alone
|
||
*/
|
||
|
||
if (ptr && ptr->the_bfd == abfd
|
||
&& ptr->section != (asection *) NULL
|
||
&& ((ptr->flags & BSF_OLD_COMMON)== 0))
|
||
{
|
||
#ifndef M88
|
||
cache_ptr->addend = -(ptr->section->vma + ptr->value);
|
||
#else
|
||
cache_ptr->addend = 0;
|
||
#endif
|
||
|
||
}
|
||
else {
|
||
cache_ptr->addend = 0;
|
||
}
|
||
|
||
cache_ptr->address -= asect->vma;
|
||
|
||
cache_ptr->section = (asection *) NULL;
|
||
|
||
#ifdef A29K
|
||
if (dst.r_type == R_IHCONST) {
|
||
/* Add in the value which was stored in the symbol index */
|
||
/* See above comment */
|
||
cache_ptr->addend += dst.r_symndx;
|
||
/* Throw away the bogus symbol pointer */
|
||
cache_ptr->sym_ptr_ptr = 0;
|
||
}
|
||
cache_ptr->howto = howto_table + dst.r_type;
|
||
#endif
|
||
#if I386
|
||
cache_ptr->howto = howto_table + dst.r_type;
|
||
#endif
|
||
#if I960
|
||
cache_ptr->howto = howto_table + dst.r_type;
|
||
#endif
|
||
#if M68
|
||
cache_ptr->howto = howto_table + dst.r_type - R_RELBYTE;
|
||
#endif
|
||
#if M88
|
||
if (dst.r_type >= R_PCR16L && dst.r_type <= R_VRT32) {
|
||
cache_ptr->howto = howto_table + dst.r_type - R_PCR16L;
|
||
cache_ptr->addend += dst.r_offset << 16;
|
||
}
|
||
else {
|
||
BFD_ASSERT(0);
|
||
}
|
||
#endif
|
||
|
||
}
|
||
|
||
}
|
||
|
||
asect->relocation = reloc_cache;
|
||
return true;
|
||
}
|
||
|
||
|
||
/* This is stupid. This function should be a boolean predicate */
|
||
static unsigned int
|
||
coff_canonicalize_reloc(abfd, section, relptr, symbols)
|
||
bfd *abfd;
|
||
sec_ptr section;
|
||
arelent **relptr;
|
||
asymbol **symbols;
|
||
{
|
||
arelent *tblptr = section->relocation;
|
||
unsigned int count = 0;
|
||
if (!(tblptr || coff_slurp_reloc_table(abfd, section, symbols)))
|
||
return 0;
|
||
tblptr = section->relocation;
|
||
if (!tblptr)
|
||
return 0;
|
||
|
||
for (; count++ < section->reloc_count;)
|
||
*relptr++ = tblptr++;
|
||
|
||
*relptr = 0;
|
||
|
||
return section->reloc_count;
|
||
}
|
||
|
||
#ifndef NO_COFF_SYMBOLS
|
||
|
||
/*
|
||
provided a BFD, a section and an offset into the section, calculate and
|
||
return the name of the source file and the line nearest to the wanted
|
||
location.
|
||
*/
|
||
|
||
static boolean
|
||
DEFUN(coff_find_nearest_line,(abfd,
|
||
section,
|
||
ignore_symbols,
|
||
offset,
|
||
filename_ptr,
|
||
functionname_ptr,
|
||
line_ptr),
|
||
bfd *abfd AND
|
||
asection *section AND
|
||
asymbol **ignore_symbols AND
|
||
bfd_vma offset AND
|
||
CONST char **filename_ptr AND
|
||
CONST char **functionname_ptr AND
|
||
unsigned int *line_ptr)
|
||
{
|
||
static bfd *cache_abfd;
|
||
static asection *cache_section;
|
||
static bfd_vma cache_offset;
|
||
static unsigned int cache_i;
|
||
static alent *cache_l;
|
||
|
||
unsigned int i = 0;
|
||
coff_data_type *cof = coff_data(abfd);
|
||
/* Run through the raw syments if available */
|
||
combined_entry_type *p;
|
||
alent *l;
|
||
unsigned int line_base = 0;
|
||
|
||
|
||
*filename_ptr = 0;
|
||
*functionname_ptr = 0;
|
||
*line_ptr = 0;
|
||
|
||
/* Don't try and find line numbers in a non coff file */
|
||
if (abfd->xvec->flavour != bfd_target_coff_flavour_enum)
|
||
return false;
|
||
|
||
if (cof == NULL)
|
||
return false;
|
||
|
||
p = cof->raw_syments;
|
||
|
||
for (i = 0; i < cof->raw_syment_count; i++) {
|
||
if (p->u.syment.n_sclass == C_FILE) {
|
||
/* File name has been moved into symbol */
|
||
*filename_ptr = (char *) p->u.syment._n._n_n._n_offset;
|
||
break;
|
||
}
|
||
p += 1 + p->u.syment.n_numaux;
|
||
}
|
||
/* Now wander though the raw linenumbers of the section */
|
||
/*
|
||
If this is the same BFD as we were previously called with and this is
|
||
the same section, and the offset we want is further down then we can
|
||
prime the lookup loop
|
||
*/
|
||
if (abfd == cache_abfd &&
|
||
section == cache_section &&
|
||
offset >= cache_offset) {
|
||
i = cache_i;
|
||
l = cache_l;
|
||
}
|
||
else {
|
||
i = 0;
|
||
l = section->lineno;
|
||
}
|
||
|
||
for (; i < section->lineno_count; i++) {
|
||
if (l->line_number == 0) {
|
||
/* Get the symbol this line number points at */
|
||
coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym);
|
||
*functionname_ptr = coff->symbol.name;
|
||
if (coff->native) {
|
||
combined_entry_type *s = coff->native;
|
||
s = s + 1 + s->u.syment.n_numaux;
|
||
/*
|
||
S should now point to the .bf of the function
|
||
*/
|
||
if (s->u.syment.n_numaux) {
|
||
/*
|
||
The linenumber is stored in the auxent
|
||
*/
|
||
union internal_auxent *a = &((s + 1)->u.auxent);
|
||
line_base = a->x_sym.x_misc.x_lnsz.x_lnno;
|
||
}
|
||
}
|
||
}
|
||
else {
|
||
if (l->u.offset > offset)
|
||
break;
|
||
*line_ptr = l->line_number + line_base + 1;
|
||
}
|
||
l++;
|
||
}
|
||
|
||
cache_abfd = abfd;
|
||
cache_section = section;
|
||
cache_offset = offset;
|
||
cache_i = i;
|
||
cache_l = l;
|
||
|
||
return true;
|
||
}
|
||
|
||
#ifdef GNU960
|
||
file_ptr
|
||
coff_sym_filepos(abfd)
|
||
bfd *abfd;
|
||
{
|
||
return obj_sym_filepos(abfd);
|
||
}
|
||
#endif
|
||
|
||
#endif /* NO_COFF_SYMBOLS */
|
||
|
||
|
||
static int
|
||
DEFUN(coff_sizeof_headers,(abfd, reloc),
|
||
bfd *abfd AND
|
||
boolean reloc)
|
||
{
|
||
size_t size;
|
||
|
||
if (reloc == false) {
|
||
size = FILHSZ + AOUTSZ;
|
||
}
|
||
else {
|
||
size = FILHSZ;
|
||
}
|
||
|
||
size += abfd->section_count * SCNHSZ;
|
||
return size;
|
||
}
|
||
|
||
|
||
#define coff_core_file_failing_command _bfd_dummy_core_file_failing_command
|
||
#define coff_core_file_failing_signal _bfd_dummy_core_file_failing_signal
|
||
#define coff_core_file_matches_executable_p _bfd_dummy_core_file_matches_executable_p
|
||
#define coff_slurp_armap bfd_slurp_coff_armap
|
||
#define coff_slurp_extended_name_table _bfd_slurp_extended_name_table
|
||
#define coff_truncate_arname bfd_dont_truncate_arname
|
||
#define coff_openr_next_archived_file bfd_generic_openr_next_archived_file
|
||
#define coff_generic_stat_arch_elt bfd_generic_stat_arch_elt
|
||
#define coff_get_section_contents bfd_generic_get_section_contents
|
||
#define coff_close_and_cleanup bfd_generic_close_and_cleanup
|
||
|
||
#define coff_bfd_debug_info_start bfd_void
|
||
#define coff_bfd_debug_info_end bfd_void
|
||
#define coff_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
|
||
|