4204 lines
114 KiB
C
4204 lines
114 KiB
C
/* Support for the generic parts of most COFF variants, for BFD.
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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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/*
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Most of this hacked by Steve Chamberlain,
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sac@cygnus.com
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*/
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/*
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SECTION
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coff backends
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BFD supports a number of different flavours of coff format.
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The major difference between formats are the sizes and
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alignments of fields in structures on disk, and the occasional
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extra field.
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Coff in all its varieties is implimented with a few common
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files and a number of implementation specific files. For
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example, The 88k bcs coff format is implemented in the file
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@code{coff-m88k.c}. This file @code{#include}s
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@code{coff-m88k.h} which defines the external structure of the
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coff format for the 88k, and @code{internalcoff.h} which
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defines the internal structure. @code{coff-m88k.c} also
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defines pthe relocations used by the 88k format
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@xref{Relocations}. Then the major portion of coff code is
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included (@code{coffcode.h}) which defines the methods used to
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act upon the types defined in @code{coff-m88k.h} and
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@code{internalcoff.h}.
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The Intel i960 processor version of coff is implemented in
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@code{coff-i960.c}. This file has the same structure as
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@code{coff-m88k.c}, except that it includes @code{coff-i960.h}
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rather than @code{coff-m88k.h}.
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SUBSECTION
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Porting To A New Version of Coff
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The recommended method is to select from the existing
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implimentations the version of coff which is most like the one
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you want to use, for our purposes, we'll say that i386 coff is
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the one you select, and that your coff flavour is called foo.
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Copy the @code{i386coff.c} to @code{foocoff.c}, copy
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@code{../include/i386coff.h} to @code{../include/foocoff.h}
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and add the lines to @code{targets.c} and @code{Makefile.in}
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so that your new back end is used. Alter the shapes of the
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structures in @code{../include/foocoff.h} so that they match
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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,
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and making sure that its version of what's going on at your
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host systems idea (assuming it has the pretty standard coff
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dump utility (usually called @code{att-dump} or just
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@code{dump})) are the same. Then clean up your code, and send
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what you've done to Cygnus. Then your stuff will be in the
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next release, and you won't have to keep integrating it.
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SUBSECTION
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How The Coff Backend Works
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SUBSUBSECTION
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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
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an internal description of the coff layout (in
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@code{internalcoff.h}) file (@code{}). A major function of the
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coff backend is swapping the bytes and twiddling the bits to
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translate the external form of the structures into the normal
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internal form. This is all performed in the
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@code{bfd_swap}_@i{thing}_@i{direction} routines. Some
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elements are different sizes between different versions of
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coff, it is the duty of the coff version specific include file
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to override the definitions of various packing routines in
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@code{coffcode.h}. Eg the size of line number entry in coff is
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sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
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@code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
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correct one. No doubt, some day someone will find a version of
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coff which has a varying field size not catered for at the
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moment. 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
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@code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
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and @code{coff_swap_linno_in}. @code{GDB} reads the symbol
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table on its own, but uses BFD to fix things up. More of the
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bit twiddlers are exported for @code{gas};
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@code{coff_swap_aux_out}, @code{coff_swap_sym_out},
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@code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
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@code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
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@code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
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of all the symbol table and reloc drudgery itself, thereby
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saving the internal BFD overhead, but uses BFD to swap things
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on the way out, making cross ports much safer. This also
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allows BFD (and thus the linker) to use the same header files
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as @code{gas}, which makes one avenue to disaster disappear.
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SUBSUBSECTION
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Symbol Reading
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The simple canonical form for symbols used by BFD is not rich
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enough to keep all the information available in a coff symbol
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table. The back end gets around this by keeping the original
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symbol table around, "behind the scenes".
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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
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the coff file and swaps all the structures inside into the
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internal form. It also fixes up all the pointers in the table
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(represented in the file by offsets from the first symbol in
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the table) into physical pointers to elements in the new
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internal table. This involves some work since the meanings of
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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
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may be the size in bytes of a structure in the next. Another
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pass is made over the table. All symbols which mark file names
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(<<C_FILE>> symbols) are modified so that the internal
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string points to the value in the auxent (the real filename)
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rather than the normal text associated with the symbol
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(@code{".file"}).
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At this time the symbol names are moved around. Coff stores
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all symbols less than nine characters long physically
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within the symbol table, longer strings are kept at the end of
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the file in the string table. This pass moves all strings
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into memory, and replaces them with pointers to the strings.
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The symbol table is massaged once again, this time to create
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the canonical table used by the BFD application. Each symbol
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is inspected in turn, and a decision made (using the
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@code{sclass} field) about the various flags to set in the
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@code{asymbol} @xref{Symbols}. The generated canonical table
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shares strings with the hidden internal symbol table.
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Any linenumbers are read from the coff file too, and attached
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to the symbols which own the functions the linenumbers belong to.
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SUBSUBSECTION
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Symbol Writing
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Writing a symbol to a coff file which didn't come from a coff
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file will lose any debugging information. The @code{asymbol}
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structure remembers the BFD from which was born, and on output
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the back end makes sure that the same destination target as
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source target is present.
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When the symbols have come from a coff file then all the
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debugging information is preserved.
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Symbol tables are provided for writing to the back end in a
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vector of pointers to pointers. This allows applications like
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the linker to accumulate and output large symbol tables
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without having to do too much byte copying.
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This function runs through the provided symbol table and
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patches each symbol marked as a file place holder
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(@code{C_FILE}) to point to the next file place holder in the
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list. It also marks each @code{offset} field in the list with
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the offset from the first symbol of the current symbol.
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Another function of this procedure is to turn the canonical
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value form of BFD into the form used by coff. Internally, BFD
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expects symbol values to be offsets from a section base; so a
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symbol physically at 0x120, but in a section starting at
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0x100, would have the value 0x20. Coff expects symbols to
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contain their final value, so symbols have their values
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changed at this point to reflect their sum with their owning
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section. Note that this transformation uses the
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<<output_section>> field of the @code{asymbol}'s
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@code{asection} @xref{Sections}.
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o coff_mangle_symbols
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This routine runs though the provided symbol table and uses
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the offsets generated by the previous pass and the pointers
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generated when the symbol table was read in to create the
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structured hierachy required by coff. It changes each pointer
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to a symbol to an index into the symbol table of the symbol
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being referenced.
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o coff_write_symbols
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This routine runs through the symbol table and patches up the
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symbols from their internal form into the coff way, calls the
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bit twiddlers and writes out the tabel to the file.
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*/
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/*
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INTERNAL_DEFINITION
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coff_symbol_type
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DESCRIPTION
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The hidden information for an asymbol is described in a
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coff_ptr_struct, which is typedefed to a combined_entry_type
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CODE_FRAGMENT
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.
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.typedef struct coff_ptr_struct
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.{
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.
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. {* Remembers the offset from the first symbol in the file for
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. this symbol. Generated by coff_renumber_symbols. *}
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.unsigned int offset;
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.
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. {* Should the tag field of this symbol be renumbered.
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. Created by coff_pointerize_aux. *}
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.char fix_tag;
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.
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. {* Should the endidx field of this symbol be renumbered.
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. Created by coff_pointerize_aux. *}
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.char fix_end;
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.
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. {* The container for the symbol structure as read and translated
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. from the file. *}
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.
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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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.
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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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.
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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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.
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. {* Have the line numbers been relocated yet ? *}
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.boolean done_lineno;
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.} coff_symbol_type;
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*/
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#include "seclet.h"
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extern bfd_error_vector_type bfd_error_vector;
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#define PUTWORD bfd_h_put_32
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#define PUTHALF bfd_h_put_16
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#define PUTBYTE bfd_h_put_8
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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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#ifndef GET_LINENO_LNNO
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#define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno));
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#endif
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#ifndef PUT_LINENO_LNNO
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#define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val, (bfd_byte *) (ext->l_lnno));
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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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#ifdef _COMMENT
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} else if (!strcmp(sec_name, _COMMENT)) {
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return((long)STYP_INFO);
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#endif /* _COMMENT */
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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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||
* Return a word with SEC_* flags set to represent the incoming
|
||
* STYP_* flags (from scnhdr.s_flags). The inverse of this
|
||
* function is sec_to_styp_flags().
|
||
* NOTE: If you add to/change this routine, you should mirror the changes
|
||
* in sec_to_styp_flags().
|
||
*/
|
||
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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||
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if ((styp_flags & STYP_TEXT) || (styp_flags & STYP_DATA))
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||
{
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||
sec_flags = SEC_LOAD | SEC_ALLOC;
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||
}
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||
else if (styp_flags & STYP_BSS)
|
||
{
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||
sec_flags = SEC_ALLOC;
|
||
}
|
||
else if (styp_flags & STYP_INFO)
|
||
{
|
||
sec_flags = SEC_NEVER_LOAD;
|
||
}
|
||
else
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||
{
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||
sec_flags = SEC_ALLOC | SEC_LOAD;
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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);
|
||
}
|
||
#endif /* STYP_LIT */
|
||
#ifdef STYP_OTHER_LOAD /* Other loaded sections */
|
||
if (styp_flags & STYP_OTHER_LOAD)
|
||
{
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||
sec_flags = (SEC_LOAD | SEC_ALLOC);
|
||
}
|
||
#endif /* STYP_SDATA */
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||
|
||
return(sec_flags);
|
||
}
|
||
|
||
#define get_index(symbol) ((int) (symbol)->udata)
|
||
#define set_index(symbol, idx) ((symbol)->udata =(PTR) (idx))
|
||
|
||
/* **********************************************************************
|
||
Here are all the routines for swapping the structures seen in the
|
||
outside world into the internal forms.
|
||
*/
|
||
|
||
|
||
static void
|
||
DEFUN(bfd_swap_reloc_in,(abfd, reloc_src, reloc_dst),
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||
bfd *abfd AND
|
||
RELOC *reloc_src AND
|
||
struct internal_reloc *reloc_dst)
|
||
{
|
||
reloc_dst->r_vaddr = bfd_h_get_32(abfd, (bfd_byte *)reloc_src->r_vaddr);
|
||
reloc_dst->r_symndx = bfd_h_get_32(abfd, (bfd_byte *) reloc_src->r_symndx);
|
||
|
||
#ifdef RS6000COFF_C
|
||
reloc_dst->r_type = bfd_h_get_8(abfd, reloc_src->r_type);
|
||
reloc_dst->r_size = bfd_h_get_8(abfd, reloc_src->r_size);
|
||
#else
|
||
reloc_dst->r_type = bfd_h_get_16(abfd, (bfd_byte *) reloc_src->r_type);
|
||
#endif
|
||
|
||
#ifdef SWAP_IN_RELOC_OFFSET
|
||
reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET(abfd,
|
||
(bfd_byte *) reloc_src->r_offset);
|
||
#endif
|
||
}
|
||
|
||
|
||
static unsigned int
|
||
DEFUN(coff_swap_reloc_out,(abfd, src, dst),
|
||
bfd *abfd AND
|
||
PTR src AND
|
||
PTR dst)
|
||
{
|
||
struct internal_reloc *reloc_src = (struct internal_reloc *)src;
|
||
struct external_reloc *reloc_dst = (struct external_reloc *)dst;
|
||
bfd_h_put_32(abfd, reloc_src->r_vaddr, (bfd_byte *) reloc_dst->r_vaddr);
|
||
bfd_h_put_32(abfd, reloc_src->r_symndx, (bfd_byte *) reloc_dst->r_symndx);
|
||
bfd_h_put_16(abfd, reloc_src->r_type, (bfd_byte *)
|
||
reloc_dst->r_type);
|
||
|
||
#ifdef SWAP_OUT_RELOC_OFFSET
|
||
SWAP_OUT_RELOC_OFFSET(abfd,
|
||
reloc_src->r_offset,
|
||
(bfd_byte *) reloc_dst->r_offset);
|
||
#endif
|
||
#ifdef SWAP_OUT_RELOC_EXTRA
|
||
SWAP_OUT_RELOC_EXTRA(abfd,reloc_src, reloc_dst);
|
||
#endif
|
||
|
||
return sizeof(struct external_reloc);
|
||
}
|
||
|
||
static void
|
||
DEFUN(bfd_swap_filehdr_in,(abfd, filehdr_src, filehdr_dst),
|
||
bfd *abfd AND
|
||
FILHDR *filehdr_src AND
|
||
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 unsigned int
|
||
DEFUN(coff_swap_filehdr_out,(abfd, in, out),
|
||
bfd *abfd AND
|
||
PTR in AND
|
||
PTR out)
|
||
{
|
||
struct internal_filehdr *filehdr_in = (struct internal_filehdr *)in;
|
||
FILHDR *filehdr_out = (FILHDR *)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);
|
||
return sizeof(FILHDR);
|
||
}
|
||
|
||
|
||
#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 unsigned int
|
||
DEFUN(coff_swap_sym_out,(abfd, inp, extp),
|
||
bfd *abfd AND
|
||
PTR inp AND
|
||
PTR extp)
|
||
{
|
||
struct internal_syment *in = (struct internal_syment *)inp;
|
||
SYMENT *ext =(SYMENT *)extp;
|
||
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);
|
||
return sizeof(SYMENT);
|
||
}
|
||
|
||
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;
|
||
|
||
/* RS/6000 "csect" auxents */
|
||
#ifdef RS6000COFF_C
|
||
case C_EXT:
|
||
case C_HIDEXT:
|
||
in->x_csect.x_scnlen = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_scnlen);
|
||
in->x_csect.x_parmhash = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_parmhash);
|
||
in->x_csect.x_snhash = bfd_h_get_16 (abfd, (bfd_byte *) ext->x_csect.x_snhash);
|
||
/* We don't have to hack bitfields in x_smtyp because it's defined by
|
||
shifts-and-ands, which are equivalent on all byte orders. */
|
||
in->x_csect.x_smtyp = bfd_h_get_8 (abfd, (bfd_byte *) ext->x_csect.x_smtyp);
|
||
in->x_csect.x_smclas = bfd_h_get_8 (abfd, (bfd_byte *) ext->x_csect.x_smclas);
|
||
in->x_csect.x_stab = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_stab);
|
||
in->x_csect.x_snstab = bfd_h_get_16 (abfd, (bfd_byte *) ext->x_csect.x_snstab);
|
||
break;
|
||
#endif
|
||
|
||
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 unsigned int
|
||
DEFUN(coff_swap_aux_out,(abfd, inp, type, class, extp),
|
||
bfd *abfd AND
|
||
PTR inp AND
|
||
int type AND
|
||
int class AND
|
||
PTR extp)
|
||
{
|
||
union internal_auxent *in = (union internal_auxent *)inp;
|
||
AUXENT *ext = (AUXENT *)extp;
|
||
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;
|
||
|
||
#ifdef RS6000COFF_C
|
||
/* RS/6000 "csect" auxents */
|
||
case C_EXT:
|
||
case C_HIDEXT:
|
||
PUTWORD (abfd, in->x_csect.x_scnlen, ext->x_csect.x_scnlen);
|
||
PUTWORD (abfd, in->x_csect.x_parmhash, ext->x_csect.x_parmhash);
|
||
PUTHALF (abfd, in->x_csect.x_snhash, ext->x_csect.x_snhash);
|
||
/* We don't have to hack bitfields in x_smtyp because it's defined by
|
||
shifts-and-ands, which are equivalent on all byte orders. */
|
||
PUTBYTE (abfd, in->x_csect.x_smtyp, ext->x_csect.x_smtyp);
|
||
PUTBYTE (abfd, in->x_csect.x_smclas, ext->x_csect.x_smclas);
|
||
PUTWORD (abfd, in->x_csect.x_stab, ext->x_csect.x_stab);
|
||
PUTHALF (abfd, in->x_csect.x_snstab, ext->x_csect.x_snstab);
|
||
break;
|
||
#endif
|
||
|
||
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
|
||
bfd_h_put_16(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);
|
||
|
||
|
||
}
|
||
}
|
||
return sizeof(AUXENT);
|
||
}
|
||
|
||
#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);
|
||
in->l_lnno = GET_LINENO_LNNO(abfd, ext);
|
||
}
|
||
|
||
static unsigned int
|
||
DEFUN(coff_swap_lineno_out,(abfd, inp, outp),
|
||
bfd *abfd AND
|
||
PTR inp AND
|
||
PTR outp)
|
||
{
|
||
struct internal_lineno *in = (struct internal_lineno *)inp;
|
||
struct external_lineno *ext = (struct external_lineno *)outp;
|
||
PUTWORD(abfd, in->l_addr.l_symndx, (bfd_byte *)
|
||
ext->l_addr.l_symndx);
|
||
|
||
PUT_LINENO_LNNO (abfd, in->l_lnno, ext);
|
||
return sizeof(struct external_lineno);
|
||
}
|
||
|
||
#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
|
||
|
||
#ifdef RS6000COFF_C
|
||
aouthdr_int->o_toc = bfd_h_get_32(abfd, aouthdr_ext->o_toc);
|
||
aouthdr_int->o_snentry = bfd_h_get_16(abfd, aouthdr_ext->o_snentry);
|
||
aouthdr_int->o_sntext = bfd_h_get_16(abfd, aouthdr_ext->o_sntext);
|
||
aouthdr_int->o_sndata = bfd_h_get_16(abfd, aouthdr_ext->o_sndata);
|
||
aouthdr_int->o_sntoc = bfd_h_get_16(abfd, aouthdr_ext->o_sntoc);
|
||
aouthdr_int->o_snloader = bfd_h_get_16(abfd, aouthdr_ext->o_snloader);
|
||
aouthdr_int->o_snbss = bfd_h_get_16(abfd, aouthdr_ext->o_snbss);
|
||
aouthdr_int->o_algntext = bfd_h_get_16(abfd, aouthdr_ext->o_algntext);
|
||
aouthdr_int->o_algndata = bfd_h_get_16(abfd, aouthdr_ext->o_algndata);
|
||
aouthdr_int->o_modtype = bfd_h_get_16(abfd, aouthdr_ext->o_modtype);
|
||
aouthdr_int->o_maxstack = bfd_h_get_32(abfd, aouthdr_ext->o_maxstack);
|
||
#endif
|
||
}
|
||
|
||
static unsigned int
|
||
DEFUN(coff_swap_aouthdr_out,(abfd, in, out),
|
||
bfd *abfd AND
|
||
PTR in AND
|
||
PTR out)
|
||
{
|
||
struct internal_aouthdr *aouthdr_in = (struct internal_aouthdr *)in;
|
||
AOUTHDR *aouthdr_out = (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
|
||
return sizeof(AOUTHDR);
|
||
}
|
||
|
||
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 unsigned int
|
||
DEFUN(coff_swap_scnhdr_out,(abfd, in, out),
|
||
bfd *abfd AND
|
||
PTR in AND
|
||
PTR out)
|
||
{
|
||
struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *)in;
|
||
SCNHDR *scnhdr_ext = (SCNHDR *)out;
|
||
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
|
||
return sizeof(SCNHDR);
|
||
}
|
||
|
||
|
||
/*
|
||
initialize a section structure with information peculiar to this
|
||
particular implementation of coff
|
||
*/
|
||
|
||
static boolean
|
||
DEFUN(coff_new_section_hook,(abfd, section),
|
||
bfd *abfd AND
|
||
asection *section)
|
||
{
|
||
section->alignment_power = abfd->xvec->align_power_min;
|
||
/* Allocate aux records for section symbols, to store size and
|
||
related info.
|
||
|
||
@@ Shouldn't use constant multiplier here! */
|
||
coffsymbol (section->symbol)->native =
|
||
(combined_entry_type *) bfd_zalloc (abfd,
|
||
sizeof (combined_entry_type) * 10);
|
||
return true;
|
||
}
|
||
|
||
static asection bfd_debug_section = { "*DEBUG*" };
|
||
|
||
/* 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, target_index),
|
||
bfd *abfd AND
|
||
struct internal_scnhdr *hdr AND
|
||
unsigned int target_index)
|
||
{
|
||
asection *return_section;
|
||
char *name;
|
||
|
||
/* Assorted wastage to null-terminate the name, thanks AT&T! */
|
||
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);
|
||
if (return_section == NULL)
|
||
return false;
|
||
|
||
/* s_paddr is presumed to be = to s_vaddr */
|
||
|
||
return_section->vma = hdr->s_vaddr;
|
||
return_section->_raw_size = hdr->s_size;
|
||
return_section->filepos = hdr->s_scnptr;
|
||
return_section->rel_filepos = hdr->s_relptr;
|
||
return_section->reloc_count = hdr->s_nreloc;
|
||
#ifdef I960
|
||
|
||
/* FIXME, use a temp var rather than alignment_power */
|
||
return_section->alignment_power = hdr->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
|
||
return_section->line_filepos = hdr->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);
|
||
|
||
return_section->target_index = target_index;
|
||
|
||
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)
|
||
{
|
||
abfd->tdata.coff_obj_data = (struct coff_tdata *)bfd_zalloc (abfd,sizeof(coff_data_type));
|
||
if (abfd->tdata.coff_obj_data == 0){
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
coff_data(abfd)->relocbase = 0;
|
||
/* make_abs_section(abfd);*/
|
||
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;
|
||
enum bfd_architecture arch;
|
||
long machine;
|
||
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, i+1);
|
||
}
|
||
}
|
||
|
||
/* make_abs_section(abfd);*/
|
||
|
||
/* Determine the machine architecture and type. */
|
||
machine = 0;
|
||
switch (internal_f->f_magic) {
|
||
#ifdef I386MAGIC
|
||
case I386MAGIC:
|
||
arch = bfd_arch_i386;
|
||
machine = 0;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef A29K_MAGIC_BIG
|
||
case A29K_MAGIC_BIG:
|
||
case A29K_MAGIC_LITTLE:
|
||
arch = bfd_arch_a29k;
|
||
machine = 0;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef MIPS
|
||
case MIPS_MAGIC_1:
|
||
case MIPS_MAGIC_2:
|
||
case MIPS_MAGIC_3:
|
||
arch = bfd_arch_mips;
|
||
machine = 0;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef MC68MAGIC
|
||
case MC68MAGIC:
|
||
case M68MAGIC:
|
||
arch = bfd_arch_m68k;
|
||
machine = 68020;
|
||
break;
|
||
#endif
|
||
#ifdef MC88MAGIC
|
||
case MC88MAGIC:
|
||
case MC88DMAGIC:
|
||
case MC88OMAGIC:
|
||
arch = bfd_arch_m88k;
|
||
machine = 88100;
|
||
break;
|
||
#endif
|
||
#ifdef Z8KMAGIC
|
||
case Z8KMAGIC:
|
||
arch = bfd_arch_z8k;
|
||
switch (internal_f->f_flags & F_MACHMASK)
|
||
{
|
||
case F_Z8001:
|
||
machine = bfd_mach_z8001;
|
||
break;
|
||
case F_Z8002:
|
||
machine = bfd_mach_z8002;
|
||
break;
|
||
default:
|
||
goto fail;
|
||
}
|
||
break;
|
||
#endif
|
||
#ifdef I960
|
||
#ifdef I960ROMAGIC
|
||
case I960ROMAGIC:
|
||
case I960RWMAGIC:
|
||
arch = bfd_arch_i960;
|
||
switch (F_I960TYPE & internal_f->f_flags)
|
||
{
|
||
default:
|
||
case F_I960CORE:
|
||
machine = bfd_mach_i960_core;
|
||
break;
|
||
case F_I960KB:
|
||
machine = bfd_mach_i960_kb_sb;
|
||
break;
|
||
case F_I960MC:
|
||
machine = bfd_mach_i960_mc;
|
||
break;
|
||
case F_I960XA:
|
||
machine = bfd_mach_i960_xa;
|
||
break;
|
||
case F_I960CA:
|
||
machine = bfd_mach_i960_ca;
|
||
break;
|
||
case F_I960KA:
|
||
machine = bfd_mach_i960_ka_sa;
|
||
break;
|
||
}
|
||
break;
|
||
#endif
|
||
#endif
|
||
|
||
#ifdef U802ROMAGIC
|
||
case U802ROMAGIC:
|
||
case U802WRMAGIC:
|
||
case U802TOCMAGIC:
|
||
arch = bfd_arch_rs6000;
|
||
machine = 6000;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef WE32KMAGIC
|
||
case WE32KMAGIC:
|
||
arch = bfd_arch_we32k;
|
||
machine = 0;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef H8300MAGIC
|
||
case H8300MAGIC:
|
||
arch = bfd_arch_h8300;
|
||
machine = 0;
|
||
break;
|
||
#endif
|
||
|
||
default: /* Unreadable input file type */
|
||
arch = bfd_arch_obscure;
|
||
break;
|
||
}
|
||
|
||
bfd_default_set_arch_mach(abfd, arch, machine);
|
||
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
|
||
*/
|
||
|
||
#if defined(M88) || defined(I960)
|
||
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) {
|
||
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)
|
||
return (coff_symbol_type *)NULL;
|
||
|
||
if (symbol->the_bfd->tdata.coff_obj_data == (coff_data_type*)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.section == &bfd_com_section) {
|
||
/* 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.section == & bfd_und_section) {
|
||
syment->n_scnum = N_UNDEF;
|
||
syment->n_value = 0;
|
||
}
|
||
else {
|
||
if (coff_symbol_ptr->symbol.section) {
|
||
syment->n_scnum =
|
||
coff_symbol_ptr->symbol.section->output_section->target_index;
|
||
|
||
syment->n_value =
|
||
coff_symbol_ptr->symbol.value +
|
||
coff_symbol_ptr->symbol.section->output_offset +
|
||
coff_symbol_ptr->symbol.section->output_section->vma;
|
||
}
|
||
else {
|
||
BFD_ASSERT(0);
|
||
/* This can happen, but I don't know why yet (steve@cygnus.com) */
|
||
syment->n_scnum = N_ABS;
|
||
syment->n_value = coff_symbol_ptr->symbol.value;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* 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;
|
||
|
||
/* COFF demands that undefined symbols come after all other symbols.
|
||
Since we don't need to impose this extra knowledge on all our client
|
||
programs, deal with that here. Sort the symbol table; just move the
|
||
undefined symbols to the end, leaving the rest alone. */
|
||
/* @@ Do we have some condition we could test for, so we don't always
|
||
have to do this? I don't think relocatability is quite right, but
|
||
I'm not certain. [raeburn:19920508.1711EST] */
|
||
{
|
||
asymbol **newsyms;
|
||
int i;
|
||
|
||
newsyms = (asymbol **) bfd_alloc_by_size_t (bfd_ptr,
|
||
sizeof (asymbol *)
|
||
* (symbol_count + 1));
|
||
bfd_ptr->outsymbols = newsyms;
|
||
for (i = 0; i < symbol_count; i++)
|
||
if (symbol_ptr_ptr[i]->section != &bfd_und_section)
|
||
*newsyms++ = symbol_ptr_ptr[i];
|
||
for (i = 0; i < symbol_count; i++)
|
||
if (symbol_ptr_ptr[i]->section == &bfd_und_section)
|
||
*newsyms++ = symbol_ptr_ptr[i];
|
||
*newsyms = (asymbol *) NULL;
|
||
symbol_ptr_ptr = bfd_ptr->outsymbols;
|
||
}
|
||
|
||
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++;
|
||
}
|
||
}
|
||
obj_conv_table_size (bfd_ptr) = 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;
|
||
a->fix_tag = 0;
|
||
}
|
||
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;
|
||
a->fix_end = 0;
|
||
|
||
}
|
||
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
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;
|
||
|
||
/* @@ bfd_debug_section isn't accessible outside this file, but we know
|
||
that C_FILE symbols belong there. So move them. */
|
||
if (native->u.syment.n_sclass == C_FILE)
|
||
symbol->section = &bfd_debug_section;
|
||
|
||
if (symbol->section == &bfd_abs_section)
|
||
{
|
||
native->u.syment.n_scnum = N_ABS;
|
||
}
|
||
else if (symbol->section == &bfd_debug_section)
|
||
{
|
||
native->u.syment.n_scnum = N_DEBUG;
|
||
}
|
||
else if (symbol->section == &bfd_und_section)
|
||
{
|
||
native->u.syment.n_scnum = N_UNDEF;
|
||
}
|
||
else
|
||
{
|
||
native->u.syment.n_scnum =
|
||
symbol->section->output_section->target_index;
|
||
}
|
||
|
||
|
||
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;
|
||
memset((PTR)&buf, 0, AUXESZ);
|
||
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->section == &bfd_und_section)
|
||
{
|
||
native->u.syment.n_scnum = N_UNDEF;
|
||
native->u.syment.n_value = symbol->value;
|
||
}
|
||
else if (symbol->section == &bfd_com_section)
|
||
{
|
||
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->target_index;
|
||
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 && !symbol->done_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) {
|
||
#if 0
|
||
/* 13 april 92. sac
|
||
I've been told this, but still need proof:
|
||
> The second bug is also in `bfd/coffcode.h'. This bug causes the linker to screw
|
||
> up the pc-relocations for all the line numbers in COFF code. This bug isn't
|
||
> only specific to A29K implementations, but affects all systems using COFF
|
||
> format binaries. Note that in COFF object files, the line number core offsets
|
||
> output by the assembler are relative to the start of each procedure, not
|
||
> to the start of the .text section. This patch relocates the line numbers
|
||
> relative to the `native->u.syment.n_value' instead of the section virtual
|
||
> address. modular!olson@cs.arizona.edu (Jon Olson)
|
||
*/
|
||
lineno[count].u.offset += native->u.syment.n_value;
|
||
|
||
#else
|
||
lineno[count].u.offset +=
|
||
symbol->symbol.section->output_section->vma +
|
||
symbol->symbol.section->output_offset;
|
||
#endif
|
||
count++;
|
||
}
|
||
symbol->done_lineno = true;
|
||
|
||
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);
|
||
|
||
}
|
||
}
|
||
|
||
/*
|
||
SUBSUBSECTION
|
||
Writing Relocations
|
||
|
||
To write 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));
|
||
|
||
|
||
#ifndef SWAP_OUT_RELOC_OFFSET
|
||
/* @@FIXME COFF relocs don't support addends. Code should probably be
|
||
in the target-independent code, using a target flag to decide whether
|
||
to fold the addend into the section contents. */
|
||
|
||
if (q->addend != 0)
|
||
#ifdef R_IHCONST
|
||
if (q->howto->type != R_IHCONST)
|
||
#endif
|
||
abort ();
|
||
#endif
|
||
|
||
n.r_vaddr = q->address + s->vma;
|
||
/* The 29k const/consth reloc pair is a real kludge - the consth
|
||
part doesn't have a symbol - it has an offset. So rebuilt
|
||
that here */
|
||
#ifdef R_IHCONST
|
||
if (q->howto->type == R_IHCONST)
|
||
n.r_symndx = q->addend;
|
||
else
|
||
#endif
|
||
|
||
if (q->sym_ptr_ptr) {
|
||
n.r_symndx = get_index((*(q->sym_ptr_ptr)));
|
||
/* Take notice if the symbol reloc points to a symbol we don't have
|
||
in our symbol table. What should we do for this?? */
|
||
if (n.r_symndx > obj_conv_table_size (abfd))
|
||
abort ();
|
||
}
|
||
#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
|
||
coff_swap_reloc_out(abfd, &n, &dst);
|
||
bfd_write((PTR) &dst, 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->symbol.section = 0;
|
||
new->native = 0;
|
||
new->lineno = (alent *) NULL;
|
||
new->done_lineno = false;
|
||
new->symbol.the_bfd = abfd;
|
||
return &new->symbol;
|
||
}
|
||
|
||
#ifndef NO_COFF_SYMBOLS
|
||
|
||
static asymbol *
|
||
DEFUN (coff_make_debug_symbol, (abfd, ptr, sz),
|
||
bfd *abfd AND
|
||
PTR ptr AND
|
||
unsigned long sz)
|
||
{
|
||
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 */
|
||
/* @@ This shouldn't be using a constant multiplier. */
|
||
new->native = (combined_entry_type *) bfd_zalloc (abfd, sizeof (combined_entry_type) * 10);
|
||
new->symbol.section = &bfd_debug_section;
|
||
new->lineno = (alent *) NULL;
|
||
new->done_lineno = false;
|
||
new->symbol.the_bfd = abfd;
|
||
return &new->symbol;
|
||
}
|
||
|
||
static void
|
||
DEFUN(coff_print_symbol,(ignore_abfd, filep, symbol, how),
|
||
bfd *ignore_abfd AND
|
||
PTR filep AND
|
||
asymbol *symbol AND
|
||
bfd_print_symbol_type how)
|
||
{
|
||
FILE *file = (FILE *)filep;
|
||
switch (how) {
|
||
case bfd_print_symbol_name:
|
||
fprintf(file, "%s", symbol->name);
|
||
break;
|
||
case bfd_print_symbol_more:
|
||
fprintf(file, "coff %lx %lx", (unsigned long) coffsymbol(symbol)->native,
|
||
(unsigned long) coffsymbol(symbol)->lineno);
|
||
break;
|
||
case bfd_print_symbol_nm:
|
||
|
||
{
|
||
CONST char *section_name = 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;
|
||
case bfd_print_symbol_all:
|
||
/* Print out the symbols in a reasonable way */
|
||
{
|
||
CONST char *section_name = symbol->section->name;
|
||
|
||
|
||
if (coffsymbol(symbol)->native)
|
||
{
|
||
unsigned int aux;
|
||
combined_entry_type *combined = coffsymbol(symbol)->native;
|
||
combined_entry_type *root = obj_raw_syments(ignore_abfd);
|
||
|
||
fprintf(file,"[%3d]",
|
||
combined - root);
|
||
|
||
|
||
fprintf(file, "(sc %2d)(fl%4x)(ty%3x)(sc%3d) nx(%d) %08x %s",
|
||
combined->u.syment.n_scnum,
|
||
combined->u.syment.n_flags,
|
||
combined->u.syment.n_type,
|
||
combined->u.syment.n_sclass,
|
||
combined->u.syment.n_numaux,
|
||
combined->u.syment.n_value,
|
||
symbol->name
|
||
);
|
||
for (aux = 0; aux < combined->u.syment.n_numaux; aux++)
|
||
{
|
||
fprintf(file,"\n");
|
||
switch (combined->u.syment.n_sclass) {
|
||
case C_FILE:
|
||
fprintf(file, "File ");
|
||
break;
|
||
default:
|
||
fprintf(file, "AUX lnno %x size %x tagndx %x",
|
||
combined[aux+1].u.auxent.x_sym.x_misc.x_lnsz.x_lnno,
|
||
combined[aux+1].u.auxent.x_sym.x_misc.x_lnsz.x_size,
|
||
combined[aux+1].u.auxent.x_sym.x_tagndx.l);
|
||
break;
|
||
|
||
}
|
||
|
||
}
|
||
|
||
{
|
||
struct lineno_cache_entry *l = coffsymbol(symbol)->lineno;
|
||
if (l)
|
||
{
|
||
printf("\n%s :", l->u.sym->name);
|
||
l++;
|
||
while (l->line_number)
|
||
{
|
||
printf("\n%4d : %x",
|
||
l->line_number,
|
||
l->u.offset);
|
||
l++;
|
||
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
}
|
||
|
||
else {
|
||
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);
|
||
}
|
||
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
#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 (bfd_get_arch(abfd)) {
|
||
#ifdef Z8KMAGIC
|
||
case bfd_arch_z8k:
|
||
*magicp = Z8KMAGIC;
|
||
switch (bfd_get_mach(abfd))
|
||
{
|
||
case bfd_mach_z8001:
|
||
*flagsp = F_Z8001;
|
||
break;
|
||
case bfd_mach_z8002:
|
||
*flagsp = F_Z8002;
|
||
break;
|
||
default:
|
||
return false;
|
||
}
|
||
return true;
|
||
#endif
|
||
#ifdef I960ROMAGIC
|
||
|
||
case bfd_arch_i960:
|
||
|
||
{
|
||
unsigned flags;
|
||
*magicp = I960ROMAGIC;
|
||
/*
|
||
((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
|
||
I960RWMAGIC); FIXME???
|
||
*/
|
||
switch (bfd_get_mach(abfd)) {
|
||
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;
|
||
break;
|
||
#endif
|
||
#ifdef MC68MAGIC
|
||
case bfd_arch_m68k:
|
||
*magicp = MC68MAGIC;
|
||
return true;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef MC88MAGIC
|
||
case bfd_arch_m88k:
|
||
*magicp = MC88OMAGIC;
|
||
return true;
|
||
break;
|
||
#endif
|
||
#ifdef H8300MAGIC
|
||
case bfd_arch_h8300:
|
||
*magicp = H8300MAGIC;
|
||
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
|
||
|
||
#ifdef WE32KMAGIC
|
||
case bfd_arch_we32k:
|
||
*magicp = WE32KMAGIC;
|
||
return true;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef U802TOCMAGIC
|
||
case bfd_arch_rs6000:
|
||
*magicp = U802TOCMAGIC;
|
||
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;
|
||
bfd_default_set_arch_mach(abfd, arch, 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;
|
||
asection *previous = (asection *)NULL;
|
||
file_ptr sofar = FILHSZ;
|
||
file_ptr old_sofar;
|
||
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
|
||
{
|
||
/* make sure this section is aligned on the right boundary - by
|
||
padding the previous section up if necessary */
|
||
|
||
old_sofar= sofar;
|
||
sofar = BFD_ALIGN(sofar, 1 << current->alignment_power);
|
||
if (previous != (asection *)NULL) {
|
||
previous->_raw_size += sofar - old_sofar;
|
||
}
|
||
}
|
||
|
||
#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->_raw_size;
|
||
#ifndef I960
|
||
/* make sure that this section is of the right size too */
|
||
old_sofar = sofar;
|
||
sofar = BFD_ALIGN(sofar, 1 << current->alignment_power);
|
||
current->_raw_size += sofar - old_sofar ;
|
||
#endif
|
||
|
||
previous = current;
|
||
}
|
||
obj_relocbase(abfd) = sofar;
|
||
}
|
||
|
||
#ifndef NO_COFF_SYMBOLS
|
||
static asymbol *
|
||
coff_section_symbol (abfd, name)
|
||
bfd *abfd;
|
||
char *name;
|
||
{
|
||
asection *sec = bfd_get_section_by_name (abfd, name);
|
||
asymbol *sym;
|
||
combined_entry_type *csym;
|
||
|
||
if (!sec)
|
||
{
|
||
/* create empty symbol */
|
||
abort ();
|
||
}
|
||
sym = sec->symbol;
|
||
if (coff_symbol_from (abfd, sym))
|
||
csym = coff_symbol_from (abfd, sym)->native;
|
||
else
|
||
csym = 0;
|
||
/* Make sure back-end COFF stuff is there. */
|
||
if (csym == 0)
|
||
{
|
||
struct foo {
|
||
coff_symbol_type sym;
|
||
/* @@FIXME This shouldn't use a fixed size!! */
|
||
combined_entry_type e[10];
|
||
};
|
||
struct foo *f;
|
||
f = (struct foo *) bfd_alloc_by_size_t (abfd, sizeof (*f));
|
||
memset ((char *) f, 0, sizeof (*f));
|
||
coff_symbol_from (abfd, sym)->native = csym = f->e;
|
||
}
|
||
csym[0].u.syment.n_sclass = C_STAT;
|
||
csym[0].u.syment.n_numaux = 1;
|
||
/* SF_SET_STATICS (sym); @@ ??? */
|
||
if (sec)
|
||
{
|
||
csym[1].u.auxent.x_scn.x_scnlen = sec->_raw_size;
|
||
csym[1].u.auxent.x_scn.x_nreloc = sec->reloc_count;
|
||
csym[1].u.auxent.x_scn.x_nlinno = sec->lineno_count;
|
||
}
|
||
else
|
||
{
|
||
csym[1].u.auxent.x_scn.x_scnlen = 0;
|
||
csym[1].u.auxent.x_scn.x_nreloc = 0;
|
||
csym[1].u.auxent.x_scn.x_nlinno = 0;
|
||
}
|
||
return sym;
|
||
}
|
||
|
||
/* If .file, .text, .data, .bss symbols are missing, add them. */
|
||
/* @@ Should we only be adding missing symbols, or overriding the aux
|
||
values for existing section symbols? */
|
||
static void
|
||
coff_add_missing_symbols (abfd)
|
||
bfd *abfd;
|
||
{
|
||
unsigned int nsyms = bfd_get_symcount (abfd);
|
||
asymbol **sympp = abfd->outsymbols;
|
||
asymbol **sympp2;
|
||
unsigned int i;
|
||
int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
|
||
coff_data_type *cdata = coff_data (abfd);
|
||
|
||
for (i = 0; i < nsyms; i++)
|
||
{
|
||
coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
|
||
CONST char *name;
|
||
if (csym)
|
||
{
|
||
/* only do this if there is a coff representation of the input
|
||
symbol */
|
||
if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
|
||
{
|
||
need_file = 0;
|
||
continue;
|
||
}
|
||
name = csym->symbol.name;
|
||
if (!name)
|
||
continue;
|
||
if (!strcmp (name, _TEXT))
|
||
need_text = 0;
|
||
else if (!strcmp (name, _DATA))
|
||
need_data = 0;
|
||
else if (!strcmp (name, _BSS))
|
||
need_bss = 0;
|
||
}
|
||
}
|
||
/* Now i == bfd_get_symcount (abfd). */
|
||
/* @@ For now, don't deal with .file symbol. */
|
||
need_file = 0;
|
||
|
||
if (!need_text && !need_data && !need_bss && !need_file)
|
||
return;
|
||
nsyms += need_text + need_data + need_bss + need_file;
|
||
sympp2 = (asymbol**) bfd_alloc_by_size_t (abfd, nsyms * sizeof (asymbol *));
|
||
memcpy (sympp2, sympp, i * sizeof (asymbol *));
|
||
if (need_file)
|
||
{
|
||
/* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
|
||
abort ();
|
||
}
|
||
if (need_text)
|
||
sympp2[i++] = coff_section_symbol (abfd, _TEXT);
|
||
if (need_data)
|
||
sympp2[i++] = coff_section_symbol (abfd, _DATA);
|
||
if (need_bss)
|
||
sympp2[i++] = coff_section_symbol (abfd, _BSS);
|
||
BFD_ASSERT (i == nsyms);
|
||
bfd_set_symtab (abfd, sympp2, nsyms);
|
||
}
|
||
#endif /* NO_COFF_SYMBOLS */
|
||
|
||
/* SUPPRESS 558 */
|
||
/* SUPPRESS 529 */
|
||
static boolean
|
||
DEFUN(coff_write_object_contents,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
asection *current;
|
||
unsigned int count;
|
||
|
||
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;
|
||
/* Number the output sections, starting from one on the first section
|
||
with a name which doesn't start with a *.
|
||
@@ The code doesn't make this check. Is it supposed to be done,
|
||
or isn't it?? */
|
||
count = 1;
|
||
for (current = abfd->sections; current != (asection *)NULL;
|
||
current = current->next)
|
||
{
|
||
current->target_index = count;
|
||
count++;
|
||
}
|
||
|
||
|
||
|
||
|
||
|
||
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)
|
||
{
|
||
/* We give section headers to +ve indexes */
|
||
if (current->target_index > 0)
|
||
{
|
||
|
||
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->target_index > 0)
|
||
{
|
||
|
||
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 * RELSZ;
|
||
}
|
||
else {
|
||
current->rel_filepos = 0;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* Write section headers to the file. */
|
||
internal_f.f_nscns = 0;
|
||
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;
|
||
if (current->target_index > 0)
|
||
{
|
||
internal_f.f_nscns ++;
|
||
strncpy(&(section.s_name[0]), current->name, 8);
|
||
section.s_vaddr = current->vma + pad;
|
||
section.s_paddr = current->vma + pad;
|
||
section.s_size = current->_raw_size - pad;
|
||
/*
|
||
If this section has no size or is unloadable then the scnptr
|
||
will be 0 too
|
||
*/
|
||
if (current->_raw_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;
|
||
|
||
coff_swap_scnhdr_out(abfd, §ion, &buff);
|
||
bfd_write((PTR) (&buff), 1, SCNHSZ, abfd);
|
||
|
||
}
|
||
|
||
pad = 0;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* OK, now set up the filehdr... */
|
||
|
||
/* Don't include the internal abs section in the 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, and now we have *customers* who have requested it,
|
||
so I'm conditionally compiling it in.
|
||
|
||
sac@cygnus.com
|
||
*/
|
||
#ifndef NOCOFF_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 (!abfd->xvec->byteorder_big_p)
|
||
internal_f.f_flags |= F_AR32WR;
|
||
else
|
||
internal_f.f_flags |= F_AR32W;
|
||
|
||
/*
|
||
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 || MIPS || WE32K
|
||
#define __A_MAGIC_SET__
|
||
/* Never was anything here for the 68k */
|
||
#endif /* M68 || MIPS || WE32K */
|
||
|
||
#if I386
|
||
# define __A_MAGIC_SET__
|
||
internal_a.magic = ZMAGIC;
|
||
#endif /* I386 */
|
||
|
||
#if RS6000COFF_C
|
||
#define __A_MAGIC_SET__
|
||
internal_a.magic = (abfd->flags & D_PAGED)? RS6K_AOUTHDR_ZMAGIC:
|
||
(abfd->flags & WP_TEXT)? RS6K_AOUTHDR_NMAGIC:
|
||
RS6K_AOUTHDR_OMAGIC;
|
||
#endif
|
||
|
||
#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_add_missing_symbols (abfd);
|
||
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 = bfd_get_section_size_before_reloc(text_sec);
|
||
internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
|
||
}
|
||
if (data_sec) {
|
||
internal_a.dsize = bfd_get_section_size_before_reloc(data_sec);
|
||
internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
|
||
}
|
||
if (bss_sec) {
|
||
internal_a.bsize = bfd_get_section_size_before_reloc(bss_sec);
|
||
}
|
||
|
||
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;
|
||
coff_swap_filehdr_out(abfd, (PTR)&internal_f, (PTR)&buff);
|
||
bfd_write((PTR) &buff, 1, FILHSZ, abfd);
|
||
}
|
||
if (abfd->flags & EXEC_P) {
|
||
AOUTHDR buff;
|
||
coff_swap_aouthdr_out(abfd, (PTR)&internal_a, (PTR)&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;
|
||
}
|
||
|
||
/* Allocate space for the ".debug" section, and read it.
|
||
We did not read the debug section until now, because
|
||
we didn't want to go to the trouble until someone needed it. */
|
||
|
||
static char *
|
||
DEFUN(build_debug_section,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
char *debug_section;
|
||
long position;
|
||
|
||
asection *sect = bfd_get_section_by_name (abfd, ".debug");
|
||
|
||
if (!sect) {
|
||
bfd_error = no_debug_section;
|
||
return NULL;
|
||
}
|
||
|
||
debug_section = (PTR) bfd_alloc (abfd,
|
||
bfd_get_section_size_before_reloc (sect));
|
||
if (debug_section == NULL) {
|
||
bfd_error = no_memory;
|
||
return NULL;
|
||
}
|
||
|
||
/* Seek to the beginning of the `.debug' section and read it.
|
||
Save the current position first; it is needed by our caller.
|
||
Then read debug section and reset the file pointer. */
|
||
|
||
position = bfd_tell (abfd);
|
||
bfd_seek (abfd, sect->filepos, SEEK_SET);
|
||
if (bfd_read (debug_section,
|
||
bfd_get_section_size_before_reloc (sect), 1, abfd)
|
||
!= bfd_get_section_size_before_reloc(sect)) {
|
||
bfd_error = system_call_error;
|
||
return NULL;
|
||
}
|
||
bfd_seek (abfd, position, SEEK_SET);
|
||
return debug_section;
|
||
}
|
||
|
||
|
||
/* 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 bfd_allocated 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. */
|
||
|
||
#ifndef SYMNAME_IN_DEBUG
|
||
#define SYMNAME_IN_DEBUG(x) 0
|
||
#endif
|
||
|
||
static combined_entry_type *
|
||
DEFUN(get_normalized_symtab,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
combined_entry_type *internal;
|
||
combined_entry_type *internal_ptr;
|
||
combined_entry_type *symbol_ptr;
|
||
combined_entry_type *internal_end;
|
||
SYMENT *raw;
|
||
SYMENT *raw_src;
|
||
SYMENT *raw_end;
|
||
char *string_table = NULL;
|
||
char *debug_section = 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, (PTR)raw_src, (PTR)&internal_ptr->u.syment);
|
||
internal_ptr->fix_tag = 0;
|
||
internal_ptr->fix_end = 0;
|
||
symbol_ptr = internal_ptr;
|
||
|
||
for (i = 0;
|
||
i < symbol_ptr->u.syment.n_numaux;
|
||
i++)
|
||
{
|
||
internal_ptr++;
|
||
raw_src++;
|
||
|
||
internal_ptr->fix_tag = 0;
|
||
internal_ptr->fix_end = 0;
|
||
coff_swap_aux_in(abfd, (char *)(raw_src),
|
||
symbol_ptr->u.syment.n_type,
|
||
symbol_ptr->u.syment.n_sclass,
|
||
&(internal_ptr->u.auxent));
|
||
/* Remember that bal entries arn't pointerized */
|
||
if (i != 1 || symbol_ptr->u.syment.n_sclass != C_LEAFPROC)
|
||
{
|
||
|
||
coff_pointerize_aux(abfd,
|
||
internal,
|
||
symbol_ptr->u.syment.n_type,
|
||
symbol_ptr->u.syment.n_sclass,
|
||
internal_ptr);
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
/* Free all the raw stuff */
|
||
bfd_release(abfd, raw);
|
||
|
||
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 */
|
||
memset(newstring, 0, 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 if (!SYMNAME_IN_DEBUG(&internal_ptr->u.syment)) {
|
||
/* Long name already. Point symbol at the string in the 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->u.syment._n._n_n._n_offset);
|
||
}
|
||
else {
|
||
/* Long name in debug section. Very similar. */
|
||
if (debug_section == NULL) {
|
||
debug_section = build_debug_section(abfd);
|
||
}
|
||
internal_ptr->u.syment._n._n_n._n_offset = (int)
|
||
(debug_section + internal_ptr->u.syment._n._n_n._n_offset);
|
||
}
|
||
}
|
||
internal_ptr += internal_ptr->u.syment.n_numaux;
|
||
}
|
||
|
||
obj_raw_syments(abfd) = internal;
|
||
|
||
return (internal);
|
||
} /* get_normalized_symtab() */
|
||
|
||
#endif /* NO_COFF_SYMBOLS */
|
||
|
||
static
|
||
struct sec *
|
||
DEFUN(section_from_bfd_index,(abfd, index),
|
||
bfd *abfd AND
|
||
int index)
|
||
{
|
||
struct sec *answer = abfd->sections;
|
||
|
||
if (index == N_ABS)
|
||
{
|
||
return &bfd_abs_section;
|
||
}
|
||
if (index == N_UNDEF)
|
||
{
|
||
return &bfd_und_section;
|
||
}
|
||
if(index == N_DEBUG)
|
||
{
|
||
return &bfd_debug_section;
|
||
|
||
}
|
||
|
||
while (answer) {
|
||
if (answer->target_index == index)
|
||
return answer;
|
||
answer = answer->next;
|
||
}
|
||
BFD_ASSERT(0);
|
||
return &bfd_und_section; /* For gcc -W and lint. Never executed. */
|
||
}
|
||
|
||
#ifndef NO_COFF_LINENOS
|
||
|
||
/*
|
||
SUBSUBSECTION
|
||
Reading Linenumbers
|
||
|
||
Creating 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_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);
|
||
dst->symbol.flags = 0;
|
||
dst->done_lineno = false;
|
||
|
||
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:
|
||
#ifdef RS6000COFF_C
|
||
case C_HIDEXT:
|
||
#endif
|
||
if ((src->u.syment.n_scnum) == 0) {
|
||
if ((src->u.syment.n_value) == 0) {
|
||
dst->symbol.section = &bfd_und_section;
|
||
dst->symbol.value= 0;
|
||
}
|
||
else {
|
||
dst->symbol.section = &bfd_com_section;
|
||
dst->symbol.value = (src->u.syment.n_value);
|
||
}
|
||
}
|
||
else {
|
||
/*
|
||
Base the value as an index from the base of the
|
||
section
|
||
*/
|
||
|
||
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 */
|
||
if (src->u.syment.n_scnum == -2)
|
||
dst->symbol.flags = BSF_DEBUGGING;
|
||
else
|
||
dst->symbol.flags = BSF_LOCAL;
|
||
/*
|
||
Base the value as an index from the base of the section, if
|
||
there is one
|
||
*/
|
||
if (dst->symbol.section)
|
||
dst->symbol.value = (src->u.syment.n_value) -
|
||
dst->symbol.section->vma;
|
||
else
|
||
dst->symbol.value = (src->u.syment.n_value) ;
|
||
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 */
|
||
#ifdef RS6000COFF_C
|
||
case C_BINCL: /* beginning of include file */
|
||
case C_EINCL: /* ending of include file */
|
||
case C_GSYM:
|
||
case C_LSYM:
|
||
case C_PSYM:
|
||
case C_RSYM:
|
||
case C_RPSYM:
|
||
case C_STSYM:
|
||
case C_DECL:
|
||
case C_ENTRY:
|
||
case C_FUN:
|
||
case C_BSTAT:
|
||
case C_ESTAT:
|
||
#endif
|
||
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;
|
||
|
||
obj_conv_table_size (abfd) = bfd_get_symcount (abfd);
|
||
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
|
||
DEFUN(coff_get_symtab, (abfd, alocation),
|
||
bfd *abfd AND
|
||
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;
|
||
|
||
symbase = obj_symbols(abfd);
|
||
while (counter < bfd_get_symcount(abfd))
|
||
{
|
||
/* This nasty code looks at the symbol to decide whether or
|
||
not it is descibes a constructor/destructor entry point. It
|
||
is structured this way to (hopefully) speed non matches */
|
||
#if 0
|
||
if (0 && symbase->symbol.name[9] == '$')
|
||
{
|
||
bfd_constructor_entry(abfd,
|
||
(asymbol **)location,
|
||
symbase->symbol.name[10] == 'I' ?
|
||
"CTOR" : "DTOR");
|
||
}
|
||
#endif
|
||
*(location++) = symbase++;
|
||
counter++;
|
||
}
|
||
*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 *);
|
||
}
|
||
|
||
/*
|
||
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:
|
||
|
||
o The entire coff relocation table is read into memory.
|
||
|
||
o Each relocation is processed in turn, first it is swapped from the
|
||
external to the internal form.
|
||
|
||
o The symbol referenced in the relocation's symbol index is
|
||
turned intoa 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.
|
||
|
||
o 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.
|
||
|
||
|
||
*/
|
||
|
||
#ifndef CALC_ADDEND
|
||
#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
|
||
if (ptr && ptr->the_bfd == abfd \
|
||
&& ((ptr->flags & BSF_OLD_COMMON)== 0)) \
|
||
{ \
|
||
cache_ptr->addend = -(ptr->section->vma + ptr->value); \
|
||
} \
|
||
else { \
|
||
cache_ptr->addend = 0; \
|
||
}
|
||
#endif
|
||
|
||
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;
|
||
arelent *cache_ptr;
|
||
|
||
unsigned int idx;
|
||
|
||
if (asect->relocation)
|
||
return true;
|
||
if (asect->reloc_count == 0)
|
||
return true;
|
||
if (asect->flags & SEC_CONSTRUCTOR)
|
||
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;
|
||
}
|
||
|
||
|
||
for (idx = 0; idx < asect->reloc_count; idx ++)
|
||
{
|
||
#ifdef RELOC_PROCESSING
|
||
struct internal_reloc dst;
|
||
struct external_reloc *src;
|
||
|
||
cache_ptr = reloc_cache + idx;
|
||
src = native_relocs + idx;
|
||
bfd_swap_reloc_in(abfd, src, &dst);
|
||
|
||
RELOC_PROCESSING(cache_ptr, &dst, symbols, abfd, asect);
|
||
#else
|
||
struct internal_reloc dst;
|
||
asymbol *ptr;
|
||
struct external_reloc *src;
|
||
|
||
cache_ptr = reloc_cache + idx;
|
||
src = native_relocs + idx;
|
||
|
||
bfd_swap_reloc_in(abfd, src, &dst);
|
||
|
||
|
||
cache_ptr->address = dst.r_vaddr;
|
||
|
||
if (dst.r_symndx != -1)
|
||
{
|
||
/* @@ Should never be greater than count of symbols! */
|
||
if (dst.r_symndx >= obj_conv_table_size (abfd))
|
||
abort ();
|
||
cache_ptr->sym_ptr_ptr = symbols + obj_convert(abfd)[dst.r_symndx];
|
||
ptr = *(cache_ptr->sym_ptr_ptr);
|
||
}
|
||
else
|
||
{
|
||
cache_ptr->sym_ptr_ptr= bfd_abs_section.symbol_ptr_ptr;
|
||
ptr = 0;
|
||
}
|
||
|
||
/*
|
||
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 */
|
||
|
||
/* Calculate any reloc addend by looking at the symbol */
|
||
CALC_ADDEND(abfd, ptr, dst, cache_ptr);
|
||
|
||
cache_ptr->address -= asect->vma;
|
||
/* !! cache_ptr->section = (asection *) NULL;*/
|
||
|
||
/* Fill in the cache_ptr->howto field from dst.r_type */
|
||
RTYPE2HOWTO(cache_ptr, &dst);
|
||
#endif
|
||
|
||
}
|
||
|
||
asect->relocation = reloc_cache;
|
||
return true;
|
||
}
|
||
|
||
|
||
/* This is stupid. This function should be a boolean predicate */
|
||
static unsigned int
|
||
DEFUN(coff_canonicalize_reloc, (abfd, section, relptr, symbols),
|
||
bfd *abfd AND
|
||
sec_ptr section AND
|
||
arelent **relptr AND
|
||
asymbol **symbols)
|
||
{
|
||
arelent *tblptr = section->relocation;
|
||
unsigned int count = 0;
|
||
|
||
|
||
if (section->flags & SEC_CONSTRUCTOR)
|
||
{
|
||
/* this section has relocs made up by us, they are not in the
|
||
file, so take them out of their chain and place them into
|
||
the data area provided */
|
||
arelent_chain *chain = section->constructor_chain;
|
||
for (count = 0; count < section->reloc_count; count ++)
|
||
{
|
||
*relptr ++ = &chain->relent;
|
||
chain = chain->next;
|
||
}
|
||
|
||
}
|
||
else
|
||
{
|
||
coff_slurp_reloc_table(abfd, section, symbols);
|
||
|
||
|
||
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)
|
||
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;
|
||
}
|
||
|
||
static bfd_vma
|
||
DEFUN(get_value,(reloc, seclet),
|
||
arelent *reloc AND
|
||
bfd_seclet_type *seclet)
|
||
{
|
||
bfd_vma value;
|
||
asymbol *symbol = *(reloc->sym_ptr_ptr);
|
||
/* A symbol holds a pointer to a section, and an offset from the
|
||
base of the section. To relocate, we find where the section will
|
||
live in the output and add that in */
|
||
|
||
if (symbol->section == &bfd_und_section)
|
||
{
|
||
/* Ouch, this is an undefined symbol.. */
|
||
bfd_error_vector.undefined_symbol(reloc, seclet);
|
||
value = symbol->value;
|
||
}
|
||
else
|
||
{
|
||
value = symbol->value +
|
||
symbol->section->output_offset +
|
||
symbol->section->output_section->vma;
|
||
}
|
||
|
||
|
||
/* Add the value contained in the relocation */
|
||
value += (short)((reloc->addend) & 0xffff);
|
||
|
||
return value;
|
||
}
|
||
|
||
static void
|
||
DEFUN(perform_slip,(s, slip, input_section, value),
|
||
asymbol **s AND
|
||
unsigned int slip AND
|
||
asection *input_section AND
|
||
bfd_vma value)
|
||
{
|
||
|
||
/* Find all symbols past this point, and make them know
|
||
what's happened */
|
||
while (*s)
|
||
{
|
||
asymbol *p = *s;
|
||
if (p->section == input_section)
|
||
{
|
||
/* This was pointing into this section, so mangle it */
|
||
if (p->value > value)
|
||
{
|
||
p->value -= slip;
|
||
}
|
||
}
|
||
s++;
|
||
|
||
}
|
||
}
|
||
static int
|
||
DEFUN(movb1,(input_section, symbols, r, shrink),
|
||
asection *input_section AND
|
||
asymbol **symbols AND
|
||
arelent *r AND
|
||
unsigned int shrink)
|
||
{
|
||
bfd_vma value = get_value(r,0);
|
||
|
||
if (value >= 0xff00)
|
||
{
|
||
|
||
/* Change the reloc type from 16bit, possible 8 to 8bit
|
||
possible 16 */
|
||
r->howto = r->howto + 1;
|
||
/* The place to relc moves back by one */
|
||
r->address -=1;
|
||
|
||
/* This will be two bytes smaller in the long run */
|
||
shrink +=2 ;
|
||
perform_slip(symbols, 2, input_section, r->address - shrink +1);
|
||
|
||
|
||
}
|
||
return shrink;
|
||
}
|
||
|
||
static int
|
||
DEFUN(jmp1,(input_section, symbols, r, shrink),
|
||
asection *input_section AND
|
||
asymbol **symbols AND
|
||
arelent *r AND
|
||
unsigned int shrink)
|
||
{
|
||
|
||
|
||
bfd_vma value = get_value(r, 0);
|
||
|
||
bfd_vma dot = input_section->output_section->vma +
|
||
input_section->output_offset + r->address;
|
||
bfd_vma gap;
|
||
|
||
/* See if the address we're looking at within 127 bytes of where
|
||
we are, if so then we can use a small branch rather than the
|
||
jump we were going to */
|
||
|
||
gap = value - (dot - shrink);
|
||
|
||
|
||
if (-120 < (long)gap && (long)gap < 120 )
|
||
{
|
||
|
||
/* Change the reloc type from 16bit, possible 8 to 8bit
|
||
possible 16 */
|
||
r->howto = r->howto + 1;
|
||
/* The place to relc moves back by one */
|
||
r->address -=1;
|
||
|
||
/* This will be two bytes smaller in the long run */
|
||
shrink +=2 ;
|
||
perform_slip(symbols, 2, input_section, r->address-shrink +1);
|
||
|
||
|
||
}
|
||
return shrink;
|
||
}
|
||
|
||
static boolean
|
||
DEFUN(bfd_coff_relax_section,(abfd, i, symbols),
|
||
bfd *abfd AND
|
||
asection *i AND
|
||
asymbol **symbols)
|
||
{
|
||
|
||
/* Get enough memory to hold the stuff */
|
||
bfd *input_bfd = i->owner;
|
||
asection *input_section = i;
|
||
int shrink = 0 ;
|
||
boolean new = false;
|
||
|
||
bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
|
||
input_section);
|
||
arelent **reloc_vector = (arelent **)bfd_xmalloc(reloc_size);
|
||
|
||
/* Get the relocs and think about them */
|
||
if (bfd_canonicalize_reloc(input_bfd,
|
||
input_section,
|
||
reloc_vector,
|
||
symbols))
|
||
{
|
||
arelent **parent;
|
||
for (parent = reloc_vector; *parent; parent++)
|
||
{
|
||
arelent *r = *parent;
|
||
switch (r->howto->type) {
|
||
case R_MOVB2:
|
||
case R_JMP2:
|
||
|
||
shrink+=2;
|
||
break;
|
||
|
||
case R_MOVB1:
|
||
shrink = movb1(input_section, symbols, r, shrink);
|
||
new = true;
|
||
|
||
break;
|
||
case R_JMP1:
|
||
shrink = jmp1(input_section, symbols, r, shrink);
|
||
new = true;
|
||
|
||
break;
|
||
}
|
||
}
|
||
|
||
}
|
||
input_section->_cooked_size -= shrink;
|
||
free((char *)reloc_vector);
|
||
return new;
|
||
}
|
||
|
||
static bfd_byte *
|
||
DEFUN(bfd_coff_get_relocated_section_contents,(in_abfd, seclet, data),
|
||
bfd *in_abfd AND
|
||
bfd_seclet_type *seclet AND
|
||
bfd_byte *data)
|
||
|
||
{
|
||
/* Get enough memory to hold the stuff */
|
||
bfd *input_bfd = seclet->u.indirect.section->owner;
|
||
asection *input_section = seclet->u.indirect.section;
|
||
bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
|
||
input_section);
|
||
arelent **reloc_vector = (arelent **)bfd_xmalloc(reloc_size);
|
||
|
||
/* read in the section */
|
||
bfd_get_section_contents(input_bfd,
|
||
input_section,
|
||
data,
|
||
0,
|
||
input_section->_raw_size);
|
||
|
||
|
||
if (bfd_canonicalize_reloc(input_bfd,
|
||
input_section,
|
||
reloc_vector,
|
||
seclet->u.indirect.symbols) )
|
||
{
|
||
arelent **parent = reloc_vector;
|
||
arelent *reloc ;
|
||
|
||
|
||
|
||
unsigned int dst_address = 0;
|
||
unsigned int src_address = 0;
|
||
unsigned int run;
|
||
unsigned int idx;
|
||
|
||
/* Find how long a run we can do */
|
||
while (dst_address < seclet->size)
|
||
{
|
||
|
||
reloc = *parent;
|
||
if (reloc)
|
||
{
|
||
/* Note that the relaxing didn't tie up the addresses in the
|
||
relocation, so we use the original address to work out the
|
||
run of non-relocated data */
|
||
run = reloc->address - src_address;
|
||
parent++;
|
||
|
||
}
|
||
else
|
||
{
|
||
run = seclet->size - dst_address;
|
||
}
|
||
/* Copy the bytes */
|
||
for (idx = 0; idx < run; idx++)
|
||
{
|
||
data[dst_address++] = data[src_address++];
|
||
}
|
||
|
||
/* Now do the relocation */
|
||
|
||
if (reloc)
|
||
{
|
||
switch (reloc->howto->type)
|
||
{
|
||
case R_JMP2:
|
||
/* Speciial relaxed type */
|
||
{
|
||
bfd_vma dot = seclet->offset + dst_address + seclet->u.indirect.section->output_section->vma;
|
||
int gap = get_value(reloc,seclet)-dot-1;
|
||
if ((gap & ~0xff ) != 0 &&((gap & 0xff00)!= 0xff00)) abort();
|
||
|
||
bfd_put_8(in_abfd,gap, data+dst_address);
|
||
|
||
switch (data[dst_address-1])
|
||
{
|
||
|
||
case 0x5e:
|
||
/* jsr -> bsr */
|
||
bfd_put_8(in_abfd, 0x55, data+dst_address-1);
|
||
break;
|
||
case 0x5a:
|
||
/* jmp ->bra */
|
||
bfd_put_8(in_abfd, 0x40, data+dst_address-1);
|
||
break;
|
||
|
||
default:
|
||
abort();
|
||
|
||
}
|
||
|
||
|
||
|
||
|
||
dst_address++;
|
||
src_address+=3;
|
||
|
||
break;
|
||
}
|
||
|
||
|
||
case R_MOVB2:
|
||
/* Special relaxed type, there will be a gap between where we
|
||
get stuff from and where we put stuff to now
|
||
|
||
for a mov.b @aa:16 -> mov.b @aa:8
|
||
opcode 0x6a 0x0y offset
|
||
-> 0x2y off
|
||
*/
|
||
if (data[dst_address-1] != 0x6a)
|
||
abort();
|
||
switch (data[src_address] & 0xf0)
|
||
{
|
||
case 0x00:
|
||
/* Src is memory */
|
||
data[dst_address-1] = (data[src_address] & 0xf) | 0x20;
|
||
break;
|
||
case 0x80:
|
||
/* Src is reg */
|
||
data[dst_address-1] = (data[src_address] & 0xf) | 0x30;
|
||
break;
|
||
default:
|
||
abort();
|
||
}
|
||
|
||
/* the offset must fit ! after all, what was all the relaxing
|
||
about ? */
|
||
|
||
bfd_put_8(in_abfd, get_value(reloc, seclet), data + dst_address);
|
||
|
||
/* Note the magic - src goes up by two bytes, but dst by only
|
||
one */
|
||
dst_address+=1;
|
||
src_address+=3;
|
||
|
||
break;
|
||
/* PCrel 8 bits */
|
||
case R_PCRBYTE:
|
||
{
|
||
bfd_vma dot = seclet->offset + dst_address + seclet->u.indirect.section->output_section->vma;
|
||
int gap = get_value(reloc,seclet)-dot;
|
||
if (gap > 127 || gap < -128)
|
||
{
|
||
bfd_error_vector.reloc_value_truncated(reloc, seclet);
|
||
}
|
||
|
||
bfd_put_8(in_abfd,gap, data+dst_address);
|
||
dst_address++;
|
||
src_address++;
|
||
|
||
break;
|
||
}
|
||
|
||
case R_RELBYTE:
|
||
{
|
||
unsigned int gap =get_value(reloc,seclet);
|
||
if (gap > 0xff && gap < ~0xff)
|
||
{
|
||
bfd_error_vector.reloc_value_truncated(reloc, seclet);
|
||
}
|
||
|
||
bfd_put_8(in_abfd, gap, data+dst_address);
|
||
dst_address+=1;
|
||
src_address+=1;
|
||
|
||
|
||
}
|
||
break;
|
||
case R_JMP1:
|
||
/* A relword which would have like to have been a pcrel */
|
||
case R_MOVB1:
|
||
/* A relword which would like to have been modified but
|
||
didn't make it */
|
||
case R_RELWORD:
|
||
bfd_put_16(in_abfd, get_value(reloc,seclet), data+dst_address);
|
||
dst_address+=2;
|
||
src_address+=2;
|
||
break;
|
||
#ifdef EXTRA_CASES
|
||
EXTRA_CASES
|
||
#else
|
||
|
||
default:
|
||
abort();
|
||
#endif
|
||
}
|
||
}
|
||
}
|
||
}
|
||
free((char *)reloc_vector);
|
||
return data;
|
||
|
||
}
|
||
|
||
|
||
#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
|
||
#define coff_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
|
||
#define coff_bfd_relax_section bfd_generic_relax_section
|
||
|