diff options
| -rwxr-xr-x | bfd/bfd.texinfo | 430 | ||||
| -rw-r--r-- | bfd/coff-a29k.c | 244 | ||||
| -rw-r--r-- | binutils/am29k-pinsn.c | 348 | ||||
| -rwxr-xr-x | include/coff-a29k.h | 303 | ||||
| -rwxr-xr-x | ld/config/hmake-rtbsd | 4 | ||||
| -rwxr-xr-x | ld/config/tmake-coff-a29k | 1 | ||||
| -rwxr-xr-x | ld/ldglda29k.c | 144 | ||||
| -rwxr-xr-x | ld/ldglda29k.script | 38 | ||||
| -rwxr-xr-x | ld/ldglda29kUr.script | 32 | ||||
| -rwxr-xr-x | ld/ldglda29kr.script | 32 |
10 files changed, 1576 insertions, 0 deletions
diff --git a/bfd/bfd.texinfo b/bfd/bfd.texinfo new file mode 100755 index 0000000..a88f819 --- /dev/null +++ b/bfd/bfd.texinfo @@ -0,0 +1,430 @@ +\input cyginfo +@c\input texinfo +@setfilename bfdinfo +@c $Id$ +@synindex ky cp +@ifinfo +This file documents the BFD library. + +Copyright (C) 1991 Cygnus Support. + +Permission is granted to make and distribute verbatim copies of +this manual provided the copyright notice and this permission notice +are preserved on all copies. + +@ignore +Permission is granted to process this file through Tex and print the +results, provided the printed document carries copying permission +notice identical to this one except for the removal of this paragraph +(this paragraph not being relevant to the printed manual). + +@end ignore +Permission is granted to copy and distribute modified versions of this +manual under the conditions for verbatim copying, provided also that the +section entitled ``GNU General Public License'' is included exactly as +in the original, and provided that the entire resulting derived work is +distributed under the terms of a permission notice identical to this +one. + +Permission is granted to copy and distribute translations of this manual +into another language, under the above conditions for modified versions, +except that the section entitled ``GNU General Public License'' may be +included in a translation approved by the author instead of in the +original English. +@end ifinfo +@iftex +@c this removes the gaps around @examples + +@c@finalout +@c@setchapternewpage odd +@settitle LIB BFD, the Binary File Desciptor Library +@titlepage +@title{libbfd} +@subtitle{The Big File Descriptor Library} +@sp 1 +@subtitle First Edition---@code{bfd} version < 2.0 +@subtitle April 1991 +@author {Steve Chamberlain} +@author {Cygnus Support} +@page + +@tex +\def\$#1${{#1}} % Kluge: collect RCS revision info without $...$ +\xdef\manvers{\$Revision$} % For use in headers, footers too +{\parskip=0pt +\hfill Cygnus Support\par +\hfill steve\@cygnus.com\par +\hfill {\it BFD}, \manvers\par +\hfill \TeX{}info \texinfoversion\par +} +\global\parindent=0pt % Steve likes it this way +@end tex + +@vskip 0pt plus 1filll +Copyright @copyright{} 1991 Cygnus Support. + +Permission is granted to make and distribute verbatim copies of +this manual provided the copyright notice and this permission notice +are preserved on all copies. + +Permission is granted to copy and distribute modified versions of this +manual under the conditions for verbatim copying, provided also that +the entire resulting derived work is distributed under the terms of a +permission notice identical to this one. + +Permission is granted to copy and distribute translations of this manual +into another language, under the above conditions for modified versions. +@end titlepage +@end iftex +@c FIXME: Talk about importance of *order* of args, cmds to linker! + +@node Top, Overview, (dir), (dir) +@ifinfo +This file documents the binary file descriptor library libbfd. +@end ifinfo + +@menu +* Overview:: Overview of bfd +* History:: History of bfd +* Backends:: Backends +* Porting:: Porting +* Future:: Future +* Index:: Index + +BFD body: +* Sections:: +* Symbols:: +* Archives:: +* Formats:: +* Relocations:: +* Core Files:: +* Targets:: +* Architecturs:: +* Opening and Closing:: +* Internal:: +* File Caching:: + +Bfd backends: +* a.out backends:: +* coff backends:: +@end menu + +@node Overview, History, Top, Top +@chapter Introduction +@cindex BFD +@cindex what is it? +Simply put, @code{bfd} is a package which allow applications to use the +same routines to operate on object files whatever the object file +format. A different object file format can be supported simply by +creating a new BFD back end and adding it to the library. + +BFD is split into two parts; the front end and the many back ends. +@itemize @bullet +@item The front end of bfd provides the interface to the user. It manages +memory, and various canonical data structures. The front end also +decides which back end to use, and when to call back end routines. +@item The back ends provide bfd its view of the real world. Each back +end provides a set of calls which the bfd front end can use to maintain +its canonical form. The back ends also may keep around information for +their own use, for greater efficiency. +@end itemize +@node History, How It Works, Overview,Top +@section History + +Gumby really knows this, so his bit goes here. +One spur behind @code{bfd} was the Intel Oregon's GNU 960 team desire for +interoperability of applications on their COFF and b.out file formats. +Cygnus was providing GNU support for the team, and Cygnus were +contracted to provid the required functionality. + +The name came from a conversation Gumby Wallace was +having with Richard Stallman about the library, RMS said that it +would be quite hard, Gumby said BFD. (Stallman was right, but the name +stuck). + +At the same time, Ready Systems wanted much the same thing, but for +different object file formats, IEEE-695, Oasys, Srecords, a.out and 68k coff. + +BFD was first implemented by Steve Chamberlain (steve@@cygnus.com), +John Gilmore (gnu@@cygnus.com), K. Richard Pixley (rich@@cygnus.com) and +Gumby Wallace (gumby@@cygnus.com). + +@node How It Works, History, Porting, Top +@section How It Works +@code{bfd} provides a common interface to the parts of an object file +to a calling application. + +When an application sucessfully opens a +target file (object, archive or whatever) a pointer to an internal +structure is returned. This pointer points to structure described in +@code{include/bfd.h}, called @code{bfd}. Conventionally this pointer is +called a @code{bfd}, and instances of it within code are called +@code{abfd}. All operations on the target object file are applied as +methods to the @code{bfd}, the mapping is defined within @code{bfd.h} in +a set of macros, all beginning @code{bfd}_something. + +For example, this sequence would do what you expect: +@tex +\globaldefs=1 +\def\example{\begingroup\inENV %This group ends at the end of the @lisp body +\hfuzz=12truept % Don't be fussy +% Make spaces be word-separators rather than space tokens. +\sepspaces % +% Single space lines +\singlespace % +% The following causes blank lines not to be ignored +% by adding a space to the end of each line. +\let\par=\lisppar +\def\Eexample{\endgroup}% +\parskip=0pt +\advance \leftskip by \lispnarrowing +\parindent=0pt +\let\exdent=\internalexdent +\obeyspaces \obeylines \tt \rawbackslash +\def\next##1{}\next} +\globaldefs=0 +@end tex + +@lisp +@w{ +#include "bfd.h" + +unsigned int number_of_sections(abfd) +bfd *abfd; +@{ + return bfd_count_sections(abfd); +@} +} +@end lisp + +The metaphor used within @code{bfd} is that an object file has a header, +a numbber of sections containing raw data, a set of relocations and some +symbol information. Also, @code{bfd}s opened upon archives have the +additional attribute of an index and contained sub bfds. This approach is +find for a.out and coff, but looses efficiency when applied to formats +such as S-records and IEEE-695. + +@section What BFD Version 1 Can't Do +As different information from the the object files is required, +BFD reads from different sections of the file and processes them. +For example a very common operation for the linker is processing symbol +tables. Each BFD back end provides a routine for converting +between the object file's representation of symbols and an internal +canonical format. When the linker asks for the symbol table of an object +file, it calls through the memory pointer to the relevant BFD +back end routine which reads and converts the table into a canonical +form. The linker then operates upon the common form. When the link is +finished and the linker writes the symbol table of the output file, +another BFD back end routine is called which takes the newly +created symbol table and converts it into the chosen output format. + +@node BFD information loss, Mechanism, BFD outline, BFD +@subsection Information Loss +@emph{Some information is lost due to the nature of the file format.} The output targets +supported by BFD do not provide identical facilities, and +information which may be described in one form has nowhere to go in +another format. One example of this is alignment information in +@code{b.out}. There is nowhere in an @code{a.out} format file to store +alignment information on the contained data, so when a file is linked +from @code{b.out} and an @code{a.out} image is produced, alignment +information will not propagate to the output file. (The linker will +still use the alignment information internally, so the link is performed +correctly). + +Another example is COFF section names. COFF files may contain an +unlimited number of sections, each one with a textual section name. If +the target of the link is a format which does not have many sections (eg +@code{a.out}) or has sections without names (eg the Oasys format) the +link cannot be done simply. You can circumvent this problem by +describing the desired input-to-output section mapping with the linker command +language. + +@emph{Information can be lost during canonicalization.} The BFD +internal canonical form of the external formats is not exhaustive; there +are structures in input formats for which there is no direct +representation internally. This means that the BFD back ends +cannot maintain all possible data richness through the transformation +between external to internal and back to external formats. + +This limitation is only a problem when using the linker to read one + format and write another. Each BFD back end is responsible for +maintaining as much data as possible, and the internal BFD +canonical form has structures which are opaque to the BFD core, +and exported only to the back ends. When a file is read in one format, +the canonical form is generated for BFD and the linker. At the +same time, the back end saves away any information which may otherwise +be lost. If the data is then written back in the same format, the back +end routine will be able to use the canonical form provided by the +BFD core as well as the information it prepared earlier. Since +there is a great deal of commonality between back ends, this mechanism +is very useful. There is no information lost for this reason when +linking big endian COFF to little endian COFF, or from @code{a.out} to +@code{b.out}. When a mixture of formats is linked, the information is +only lost from the files whose format differs from the destination. + +@node Mechanism, , BFD information loss, BFD +@subsection Mechanism +The greatest potential for loss of information is when there is least +overlap between the information provided by the source format, that +stored by the canonical format, and the information needed by the +destination format. A brief description of the canonical form may help +you appreciate what kinds of data you can count on preserving across +conversions. +@cindex BFD canonical format +@cindex internal object-file format + +@table @emph +@item files +Information on target machine architecture, particular implementation +and format type are stored on a per-file basis. Other information +includes a demand pageable bit and a write protected bit. Note that +information like Unix magic numbers is not stored here---only the magic +numbers' meaning, so a @code{ZMAGIC} file would have both the demand pageable +bit and the write protected text bit set. + +The byte order of the target is stored on a per-file basis, so that big- +and little-endian object files may be linked with one another. + +@item sections +Each section in the input file contains the name of the section, the +original address in the object file, various flags, size and alignment +information and pointers into other BFD data structures. + +@item symbols +Each symbol contains a pointer to the object file which originally +defined it, its name, its value, and various flag bits. When a +BFD back end reads in a symbol table, the back end relocates all +symbols to make them relative to the base of the section where they were +defined. This ensures that each symbol points to its containing +section. Each symbol also has a varying amount of hidden data to contain +private data for the BFD back end. Since the symbol points to the +original file, the private data format for that symbol is accessible. +@code{gld} can operate on a collection of symbols of wildly different +formats without problems. + +Normal global and simple local symbols are maintained on output, so an +output file (no matter its format) will retain symbols pointing to +functions and to global, static, and common variables. Some symbol +information is not worth retaining; in @code{a.out} type information is +stored in the symbol table as long symbol names. This information would +be useless to most COFF debuggers and may be thrown away with +appropriate command line switches. (The GNU debugger @code{gdb} does +support @code{a.out} style debugging information in COFF). + +There is one word of type information within the symbol, so if the +format supports symbol type information within symbols (for example COFF, +IEEE, Oasys) and the type is simple enough to fit within one word +(nearly everything but aggregates) the information will be preserved. + +@item relocation level +Each canonical BFD relocation record contains a pointer to the symbol to +relocate to, the offset of the data to relocate, the section the data +is in and a pointer to a relocation type descriptor. Relocation is +performed effectively by message passing through the relocation type +descriptor and symbol pointer. It allows relocations to be performed +on output data using a relocation method only available in one of the +input formats. For instance, Oasys provides a byte relocation format. +A relocation record requesting this relocation type would point +indirectly to a routine to perform this, so the relocation may be +performed on a byte being written to a COFF file, even though 68k COFF +has no such relocation type. + +@item line numbers +Object formats can contain, for debugging purposes, some form of mapping +between symbols, source line numbers, and addresses in the output file. +These addresses have to be relocated along with the symbol information. +Each symbol with an associated list of line number records points to the +first record of the list. The head of a line number list consists of a +pointer to the symbol, which allows divination of the address of the +function whose line number is being described. The rest of the list is +made up of pairs: offsets into the section and line numbers. Any format +which can simply derive this information can pass it successfully +between formats (COFF, IEEE and Oasys). +@end table + + +What is a backend +@node BFD front end, BFD back end, Mechanism, Top +@page +@chapter BFD front end +@include doc/bfd.doc +@page +@node Sections, Symbols , bfd, Top +@include doc/section.doc +@page +@node Symbols, Archives ,Sections, To +@include doc/syms.doc +@page +@node Archives, Formats, Symbols, Top +@include doc/archive.doc +@page +@node Formats, Relocations, Archives, Top +@include doc/format.doc +@page +@node Relocations, Core Files,Formats, Top +@include doc/reloc.doc +@page +@node Core Files, Targets, Relocations, Top +@include doc/core.doc +@page +@node Targets, Architectures, Core Files, Top +@include doc/targets.doc +@page +@node Architectures, Opening and Closing, Targets, Top +@include doc/archures.doc +@page +@node Opening and Closing, Internal, Architectures, Top +@include doc/opncls.doc +@page +@node Internal, File Caching, Opening and Closing, Top +@include doc/libbfd.doc +@page +@node File Caching, Top, Internal, Top +@include doc/cache.doc +@page +@chapter BFD back end +@node BFD back end, ,BFD front end, Top +@menu +* What to put where +* a.out backends:: +* coff backends:: +* oasys backend:: +* ieee backend:: +* srecord backend:: +@end menu +@node What to Put Where, aout backends, BFD back end, BFD back end +All of bfd lives in one directory. +@page +@node aout backends, coff backends, What to Put Where, BFD back end +@include doc/aoutx.doc +@page +@node coff backends, oasys backends, aout backends, BFD back end +@include doc/coffcode.doc +@page +@node Index, , BFD, Top +@unnumbered Function Index +@printindex fn +@setchapternewpage on +@unnumbered Index +@printindex cp + +@tex +% I think something like @colophon should be in texinfo. In the +% meantime: +\long\def\colophon{\hbox to0pt{}\vfill +\centerline{The body of this manual is set in} +\centerline{\fontname\tenrm,} +\centerline{with headings in {\bf\fontname\tenbf}} +\centerline{and examples in {\tt\fontname\tentt}.} +\centerline{{\it\fontname\tenit\/} and} +\centerline{{\sl\fontname\tensl\/}} +\centerline{are used for emphasis.}\vfill} +\page\colophon +% Blame: pesch@cygnus.com, 28mar91. +@end tex + + +@contents +@bye + + diff --git a/bfd/coff-a29k.c b/bfd/coff-a29k.c new file mode 100644 index 0000000..c52f6f1 --- /dev/null +++ b/bfd/coff-a29k.c @@ -0,0 +1,244 @@ +/* Copyright (C) 1990, 1991 Free Software Foundation, Inc. + Contributed by David Wood at New York University 7/8/91 + +This file is part of BFD, the Binary File Diddler. + +BFD is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 1, or (at your option) +any later version. + +BFD is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with BFD; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + + +/* $Id$ */ + +#define A29K 1 + +#include <ansidecl.h> +#include <sysdep.h> +#include "bfd.h" +#include "libbfd.h" +#include "obstack.h" +#include "amdcoff.h" +#include "internalcoff.h" +#include "libcoff.h" + +#define INSERT_HWORD(WORD,HWORD) \ + (((WORD) & 0xff00ff00) | (((HWORD) & 0xff00) << 8) | ((HWORD)& 0xff)) +#define EXTRACT_HWORD(WORD) (((WORD) & 0x00ff0000) >> 8) | ((WORD) & 0xff) + +/* Provided the symbol, returns the value reffed */ +static long +get_symbol_value(symbol) +asymbol *symbol; +{ + long relocation = 0; + + if (symbol != (asymbol *)NULL) { + if (symbol->flags & BSF_FORT_COMM) { + relocation = 0; + } else { + relocation = symbol->value; + } + if (symbol->section != (asection *)NULL) { + relocation += symbol->section->output_section->vma + + symbol->section->output_offset; + } + } + return(relocation); +} + +static bfd_reloc_status_enum_type +a29k_reloc(abfd, reloc_entry, symbol_in, data, input_section) +bfd *abfd; +arelent *reloc_entry; +asymbol *symbol_in; +unsigned char *data; +asection *input_section; +{ + static unsigned long part1_consth_active=0; + static unsigned long part1_consth_value; + unsigned long insn, value, sym_value; + unsigned short r_type; +/* bfd_reloc_status_enum_type result;*/ +/* coff_symbol_type *cs = coffsymbol(symbol_in);*/ + + r_type = reloc_entry->howto->type; + + /* FIXME: Do we need to check for partial linking here */ + if (symbol_in && (symbol_in->flags & BSF_UNDEFINED)) { + /* Keep the state machine happy in case we're called again */ + if (r_type == R_IHIHALF) { + part1_consth_active = 1; + part1_consth_value = 0; + } + return(bfd_reloc_undefined); + } + + if ((part1_consth_active) && (r_type != R_IHCONST)) { + fprintf(stderr,"Relocation problem : "); + fprintf(stderr,"Missing IHCONST in module %s\n",abfd->filename); + part1_consth_active = 0; + return(bfd_reloc_dangerous); + } + + insn = bfd_get_32(abfd, data + reloc_entry->address); + sym_value = get_symbol_value(symbol_in); + + switch (r_type) { + case R_IREL: + value = EXTRACT_HWORD(insn) << 2; + value += sym_value + reloc_entry->addend; + if (value <= 0x3ffff) { /* Absolute jmp/call */ + insn |= 0x01000000; /* Make it absolute */ + /* FIXME: Should we change r_type to R_IABS */ + } else { /* Relative jmp/call */ + value -= reloc_entry->address; + if (value > 0x3ffff) { + fprintf(stderr,"Relocation problem : "); + fprintf(stderr,"Jmp/call too far; to %d from %s\n", + symbol_in->name,abfd->filename); + return(bfd_reloc_outofrange); + } + } + value >>= 2; + insn = INSERT_HWORD(insn,value); + break; + case R_ILOHALF: + value = EXTRACT_HWORD(insn); + value += sym_value + reloc_entry->addend; + insn = INSERT_HWORD(insn,value); + break; + case R_IHIHALF: /* consth, part 1 */ + /* Just get the symbol value that is referenced */ + part1_consth_active = 1; + part1_consth_value = sym_value + reloc_entry->addend; + return(bfd_reloc_ok); /* Don't modify insn until R_IHCONST */ + break; + case R_IHCONST: /* consth, part 2 */ + /* Now relocate the reference */ + if (!part1_consth_active) { + fprintf(stderr,"Relocation problem : "); + fprintf(stderr,"IHIHALF missing in module %s\n", + abfd->filename); + part1_consth_active = 0; + return(bfd_reloc_dangerous); + } + /* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */ + value = (unsigned int)reloc_entry->addend; /* r_symndx */ + value += part1_consth_value; + value >>= 16; + insn = INSERT_HWORD(insn,value); + part1_consth_active = 0; + break; + case R_BYTE: + value = (insn >> 24) + sym_value + reloc_entry->addend; + if (value & 0xffffff00) { + fprintf(stderr,"Relocation problem : "); + fprintf(stderr,"byte value too large in module %s\n", + abfd->filename); + return(bfd_reloc_overflow); + } + insn = (insn & 0x00ffffff) | (value << 24); + break; + case R_HWORD: + value = (insn >> 16) + sym_value + reloc_entry->addend; + if (value & 0xffff0000) { + fprintf(stderr,"Relocation problem : "); + fprintf(stderr,"hword value too large in module %s\n", + abfd->filename); + return(bfd_reloc_overflow); + } + insn = (insn & 0x0000ffff) | (value<<16); + break; + case R_WORD: + insn += sym_value + reloc_entry->addend; + break; + default: + fprintf(stderr,"Relocation problem : "); + fprintf(stderr,"Unrecognized reloc type %d, in module %s\n", + r_type,abfd->filename); + return (bfd_reloc_dangerous); + } + + bfd_put_32(abfd, insn, data+reloc_entry->address); + return(bfd_reloc_ok); +} + +/* type rightshift + size + bitsize + pc-relative + bitpos + absolute + complain_on_overflow + special_function + relocation name + partial_inplace + src_mask +*/ + +/*FIXME: I'm not real sure about this table */ +#define NA 0 /* Obsolete fields, via the documentation */ +static reloc_howto_type howto_table[] = +{ + {R_ABS, 0, 3, NA, false, NA, NA, true,a29k_reloc,"ABS", true, 0xffffffff,0xffffffff, false}, + {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}, {10}, + {11}, {12}, {13}, {14}, {15}, {16}, {17}, {18}, {19}, {20}, + {21}, {22}, {23}, + {R_IREL, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IREL", true, 0xffffffff,0xffffffff, false}, + {R_IABS, 0, 3, NA, false, NA, NA, true,a29k_reloc,"IABS", true, 0xffffffff,0xffffffff, false}, + {R_ILOHALF, 0, 3, NA, true, NA, NA, true,a29k_reloc,"ILOHALF", true, 0x0000ffff,0x0000ffff, false}, + {R_IHIHALF, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IHIHALF", true, 0xffff0000,0xffff0000, false}, + {R_IHCONST, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IHCONST", true, 0xffff0000,0xffff0000, false}, + {R_BYTE, 0, 0, NA, false, NA, NA, true,a29k_reloc,"BYTE", true, 0x000000ff,0x000000ff, false}, + {R_HWORD, 0, 1, NA, false, NA, NA, true,a29k_reloc,"HWORD", true, 0x0000ffff,0x0000ffff, false}, + {R_WORD, 0, 2, NA, false, NA, NA, true,a29k_reloc,"WORD", true, 0xffffffff,0xffffffff, false}, +}; +#undef NA + +#define BADMAG(x) A29KBADMAG(x) + +#include "coffcode.h" + +bfd_target a29kcoff_big_vec = +{ + "coff-a29k-big", /* name */ + bfd_target_coff_flavour_enum, + true, /* data byte order is big */ + true, /* header byte order is big */ + + (HAS_RELOC | EXEC_P | /* object flags */ + HAS_LINENO | HAS_DEBUG | + HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT), + + (SEC_HAS_CONTENTS | SEC_ALLOC /* section flags */ + | SEC_LOAD | SEC_RELOC + | SEC_READONLY ), + '/', /* ar_pad_char */ + 15, /* ar_max_namelen */ + + 3, /* minimum section alignment */ +_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */ +_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */ + + + {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ + bfd_generic_archive_p, _bfd_dummy_target}, + {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ + bfd_false}, + {bfd_false, coff_write_object_contents, /* bfd_write_contents */ + _bfd_write_archive_contents, bfd_false}, + + JUMP_TABLE(coff), + COFF_SWAP_TABLE + }; + diff --git a/binutils/am29k-pinsn.c b/binutils/am29k-pinsn.c new file mode 100644 index 0000000..7207fff --- /dev/null +++ b/binutils/am29k-pinsn.c @@ -0,0 +1,348 @@ +/* Instruction printing code for the AMD 29000 + Copyright (C) 1990 Free Software Foundation, Inc. + Contributed by Cygnus Support. Written by Jim Kingdon. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 1, or (at your option) +any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include <stdio.h> + +#ifdef GDB +# include "defs.h" +# include "target.h" +# include "am29k-opcode.h" +#else +# include "sysdep.h" +# include "bfd.h" +# include "a29k-opcode.h" +# define am29k_opcodes a29k_opcodes +# define am29k_opcode a29k_opcode +# define NUM_OPCODES num_opcodes +# define fprintf_filtered fprintf +#endif + + +/* Print a symbolic representation of a general-purpose + register number NUM on STREAM. + NUM is a number as found in the instruction, not as found in + debugging symbols; it must be in the range 0-255. */ +static void +print_general (num, stream) + int num; + FILE *stream; +{ + if (num < 128) + fprintf_filtered (stream, "gr%d", num); + else + fprintf_filtered (stream, "lr%d", num - 128); +} + +/* Like print_general but a special-purpose register. + + The mnemonics used by the AMD assembler are not quite the same + as the ones in the User's Manual. We use the ones that the + assembler uses. */ +static void +print_special (num, stream) + int num; + FILE *stream; +{ + /* Register names of registers 0-SPEC0_NUM-1. */ + static char *spec0_names[] = { + "vab", "ops", "cps", "cfg", "cha", "chd", "chc", "rbp", "tmc", "tmr", + "pc0", "pc1", "pc2", "mmu", "lru" + }; +#define SPEC0_NUM ((sizeof spec0_names) / (sizeof spec0_names[0])) + + /* Register names of registers 128-128+SPEC128_NUM-1. */ + static char *spec128_names[] = { + "ipc", "ipa", "ipb", "q", "alu", "bp", "fc", "cr" + }; +#define SPEC128_NUM ((sizeof spec128_names) / (sizeof spec128_names[0])) + + /* Register names of registers 160-160+SPEC160_NUM-1. */ + static char *spec160_names[] = { + "fpe", "inte", "fps", "sr163", "exop" + }; +#define SPEC160_NUM ((sizeof spec160_names) / (sizeof spec160_names[0])) + + if (num < SPEC0_NUM) + fprintf_filtered (stream, spec0_names[num]); + else if (num >= 128 && num < 128 + SPEC128_NUM) + fprintf_filtered (stream, spec128_names[num-128]); + else if (num >= 160 && num < 160 + SPEC160_NUM) + fprintf_filtered (stream, spec160_names[num-160]); + else + fprintf_filtered (stream, "sr%d", num); +} + +/* Is an instruction with OPCODE a delayed branch? */ +static int +is_delayed_branch (opcode) + int opcode; +{ + return (opcode == 0xa8 || opcode == 0xa9 || opcode == 0xa0 || opcode == 0xa1 + || opcode == 0xa4 || opcode == 0xa5 + || opcode == 0xb4 || opcode == 0xb5 + || opcode == 0xc4 || opcode == 0xc0 + || opcode == 0xac || opcode == 0xad + || opcode == 0xcc); +} + +/* Now find the four bytes of INSN and put them in *INSN{0,8,16,24}. + Note that the amd can be set up as either + big or little-endian (the tm file says which) and we can't assume + the host machine is the same. */ +static void +find_bytes (insn, insn0, insn8, insn16, insn24) + char *insn; + unsigned char *insn0; + unsigned char *insn8; + unsigned char *insn16; + unsigned char *insn24; +{ +#if TARGET_BYTE_ORDER == BIG_ENDIAN + *insn24 = insn[0]; + *insn16 = insn[1]; + *insn8 = insn[2]; + *insn0 = insn[3]; +#else /* Little-endian. */ + *insn24 = insn[3]; + *insn16 = insn[2]; + *insn8 = insn[1]; + *insn0 = insn[0]; +#endif /* Little-endian. */ +} + +/* Print one instruction from MEMADDR on STREAM. + Return the size of the instruction (always 4 on am29k). */ +#ifdef GDB +print_insn (memaddr, stream) + CORE_ADDR memaddr; + FILE *stream; +#else +int +print_insn_a29k (memaddr, buffer, stream) + bfd_vma memaddr; + uint8e_type *buffer; + FILE *stream; +#endif +{ + /* The raw instruction. */ + char insn[4]; + + /* The four bytes of the instruction. */ + unsigned char insn24, insn16, insn8, insn0; + + struct am29k_opcode *opcode; + +#ifdef GDB + read_memory (memaddr, &insn[0], 4); +#else + insn[0] = ((char*)buffer)[0]; + insn[1] = ((char*)buffer)[1]; + insn[2] = ((char*)buffer)[2]; + insn[3] = ((char*)buffer)[3]; +#endif + + find_bytes (insn, &insn0, &insn8, &insn16, &insn24); + + /* Handle the nop (aseq 0x40,gr1,gr1) specially */ + if ((insn24==0x70) && (insn16==0x40) && (insn8==0x01) && (insn0==0x01)) { + fprintf_filtered (stream,"nop"); + return 4; + } + + + /* The opcode is always in insn24. */ + for (opcode = &am29k_opcodes[0]; + opcode < &am29k_opcodes[NUM_OPCODES]; + ++opcode) + { +#ifdef GDB + if (insn24 == opcode->opcode) +#else + if (insn24 == (opcode->opcode >> 24)) +#endif + { + char *s; + + fprintf_filtered (stream, "%s ", opcode->name); + for (s = opcode->args; *s != '\0'; ++s) + { + switch (*s) + { + case 'a': + print_general (insn8, stream); + break; + + case 'b': + print_general (insn0, stream); + break; + + case 'c': + print_general (insn16, stream); + break; + + case 'i': + fprintf_filtered (stream, "%d", insn0); + break; + + case 'x': + fprintf_filtered (stream, "%d", (insn16 << 8) + insn0); + break; + + case 'h': + fprintf_filtered (stream, "0x%x", + (insn16 << 24) + (insn0 << 16)); + break; + + case 'X': + fprintf_filtered (stream, "%d", + ((insn16 << 8) + insn0) | 0xffff0000); + break; + + case 'P': + /* This output looks just like absolute addressing, but + maybe that's OK (it's what the GDB 68k and EBMON + 29k disassemblers do). */ + /* All the shifting is to sign-extend it. p*/ + print_address + (memaddr + + (((int)((insn16 << 10) + (insn0 << 2)) << 14) >> 14), + stream); + break; + + case 'A': + print_address ((insn16 << 10) + (insn0 << 2), stream); + break; + + case 'e': + fprintf_filtered (stream, "%d", insn16 >> 7); + break; + + case 'n': + fprintf_filtered (stream, "0x%x", insn16 & 0x7f); + break; + + case 'v': + fprintf_filtered (stream, "%x", insn16); + break; + + case 's': + print_special (insn8, stream); + break; + + case 'u': + fprintf_filtered (stream, "%d", insn0 >> 7); + break; + + case 'r': + fprintf_filtered (stream, "%d", (insn0 >> 4) & 7); + break; + + case 'd': + fprintf_filtered (stream, "%d", (insn0 >> 2) & 3); + break; + + case 'f': + fprintf_filtered (stream, "%d", insn0 & 3); + break; + + case 'F': + fprintf_filtered (stream, "%d", (insn0 >> 18) & 15); + break; + + case 'C': + fprintf_filtered (stream, "%d", (insn0 >> 16) & 3); + break; + + default: + fprintf_filtered (stream, "%c", *s); + } + } + + /* Now we look for a const,consth pair of instructions, + in which case we try to print the symbolic address. */ + if (insn24 == 2) /* consth */ + { + int errcode; + char prev_insn[4]; + unsigned char prev_insn0, prev_insn8, prev_insn16, prev_insn24; + +#ifdef GDB + errcode = target_read_memory (memaddr - 4, + &prev_insn[0], + 4); +#else + prev_insn[0] = ((char*)buffer)[0-4]; + prev_insn[1] = ((char*)buffer)[1-4]; + prev_insn[2] = ((char*)buffer)[2-4]; + prev_insn[3] = ((char*)buffer)[3-4]; + errcode = 0; +#endif + if (errcode == 0) + { + /* If it is a delayed branch, we need to look at the + instruction before the delayed brach to handle + things like + + const _foo + call _printf + consth _foo + */ + find_bytes (prev_insn, &prev_insn0, &prev_insn8, + &prev_insn16, &prev_insn24); + if (is_delayed_branch (prev_insn24)) + { +#ifdef GDB + errcode = target_read_memory + (memaddr - 8, &prev_insn[0], 4); +#else + prev_insn[0] = ((char*)buffer)[0-8]; + prev_insn[1] = ((char*)buffer)[1-8]; + prev_insn[2] = ((char*)buffer)[2-8]; + prev_insn[3] = ((char*)buffer)[3-8]; + errcode = 0; +#endif + find_bytes (prev_insn, &prev_insn0, &prev_insn8, + &prev_insn16, &prev_insn24); + } + } + + /* If there was a problem reading memory, then assume + the previous instruction was not const. */ + if (errcode == 0) + { + /* Is it const to the same register? */ + if (prev_insn24 == 3 + && prev_insn8 == insn8) + { + fprintf_filtered (stream, "\t; "); + print_address (((insn16 << 24) + (insn0 << 16) + + (prev_insn16 << 8) + (prev_insn0)), + stream); + } + } + } + + return 4; + } + } + fprintf_filtered (stream, ".word %8x", + (insn24 << 24) + (insn16 << 16) + (insn8 << 8) + insn0); + return 4; +} diff --git a/include/coff-a29k.h b/include/coff-a29k.h new file mode 100755 index 0000000..35e4ddd --- /dev/null +++ b/include/coff-a29k.h @@ -0,0 +1,303 @@ +/* COFF spec for AMD 290*0 + Contributed by David Wood @ New York University. + */ + +#ifndef AMD +# define AMD +#endif + +/****************************************************************/ + +/* +** File Header and related definitions +*/ + +struct external_filehdr +{ + char f_magic[2]; /* magic number */ + char f_nscns[2]; /* number of sections */ + char f_timdat[4]; /* time & date stamp */ + char f_symptr[4]; /* file pointer to symtab */ + char f_nsyms[4]; /* number of symtab entries */ + char f_opthdr[2]; /* sizeof(optional hdr) */ + char f_flags[2]; /* flags */ +}; + +#define FILHDR struct external_filehdr +#define FILHSZ sizeof (FILHDR) + +/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/ + +/* +** Magic numbers for Am29000 +** (AT&T will assign the "real" magic number) +*/ + +#define SIPFBOMAGIC 0572 /* Am29000 (Byte 0 is MSB) */ +#define SIPRBOMAGIC 0573 /* Am29000 (Byte 0 is LSB) */ + +#define A29K_MAGIC_BIG SIPFBOMAGIC +#define A29K_MAGIC_LITTLE SIPRBOMAGIC +#define A29KBADMAG(x) (((x).f_magic!=A29K_MAGIC_BIG) && \ + ((x).f_magic!=A29K_MAGIC_LITTLE)) + + +/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/ + +/* +** File header flags currently known to us. +** +** Am29000 will use the F_AR32WR and F_AR32W flags to indicate +** the byte ordering in the file. +*/ + +/*--------------------------------------------------------------*/ + +/* +** Optional (a.out) header +*/ + +typedef struct external_aouthdr +{ + char magic[2]; /* type of file */ + char vstamp[2]; /* version stamp */ + char tsize[4]; /* text size in bytes, padded to FW bdry*/ + char dsize[4]; /* initialized data " " */ + char bsize[4]; /* uninitialized data " " */ + char entry[4]; /* entry pt. */ + char text_start[4]; /* base of text used for this file */ + char data_start[4]; /* base of data used for this file */ +} AOUTHDR; + +#define AOUTSZ (sizeof(AOUTHDR)) + +/* aouthdr magic numbers */ +#define NMAGIC 0410 /* separate i/d executable */ +#define SHMAGIC 0406 /* NYU/Ultra3 shared data executable + (writable text) */ + +#define _ETEXT "_etext" + +/*--------------------------------------------------------------*/ + +/* +** Section header and related definitions +*/ + +struct external_scnhdr +{ + char s_name[8]; /* section name */ + char s_paddr[4]; /* physical address, aliased s_nlib */ + char s_vaddr[4]; /* virtual address */ + char s_size[4]; /* section size */ + char s_scnptr[4]; /* file ptr to raw data for section */ + char s_relptr[4]; /* file ptr to relocation */ + char s_lnnoptr[4]; /* file ptr to line numbers */ + char s_nreloc[2]; /* number of relocation entries */ + char s_nlnno[2]; /* number of line number entries*/ + char s_flags[4]; /* flags */ +}; + +#define SCNHDR struct external_scnhdr +#define SCNHSZ sizeof (SCNHDR) + +/* + * names of "special" sections + */ +#define _TEXT ".text" +#define _DATA ".data" +#define _BSS ".bss" + +/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/ + +/* +** Section types - with additional section type for global +** registers which will be relocatable for the Am29000. +** +** In instances where it is necessary for a linker to produce an +** output file which contains text or data not based at virtual +** address 0, e.g. for a ROM, then the linker should accept +** address base information as command input and use PAD sections +** to skip over unused addresses. +*/ + +#define STYP_BSSREG 0x1200 /* Global register area (like STYP_INFO) */ +#define STYP_ENVIR 0x2200 /* Environment (like STYP_INFO) */ +#define STYP_ABS 0x4000 /* Absolute (allocated, not reloc, loaded) */ +#define STYP_LIT 0x8020 /* Literal data (like STYP_TEXT) */ + +/*--------------------------------------------------------------*/ + +/* +** Relocation information declaration and related definitions +*/ + +struct external_reloc { + char r_vaddr[4]; /* (virtual) address of reference */ + char r_symndx[4]; /* index into symbol table */ + char r_type[2]; /* relocation type */ +}; + +#define RELOC struct external_reloc +#define RELSZ 10 /* sizeof (RELOC) */ + +/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/ + +/* +** Relocation types for the Am29000 +*/ + +#define R_ABS 0 /* reference is absolute */ + +#define R_IREL 030 /* instruction relative (jmp/call) */ +#define R_IABS 031 /* instruction absolute (jmp/call) */ +#define R_ILOHALF 032 /* instruction low half (const) */ +#define R_IHIHALF 033 /* instruction high half (consth) part 1 */ +#define R_IHCONST 034 /* instruction high half (consth) part 2 */ + /* constant offset of R_IHIHALF relocation */ +#define R_BYTE 035 /* relocatable byte value */ +#define R_HWORD 036 /* relocatable halfword value */ +#define R_WORD 037 /* relocatable word value */ + +#define R_IGLBLRC 040 /* instruction global register RC */ +#define R_IGLBLRA 041 /* instruction global register RA */ +#define R_IGLBLRB 042 /* instruction global register RB */ + +/* +NOTE: +All the "I" forms refer to 29000 instruction formats. The linker is +expected to know how the numeric information is split and/or aligned +within the instruction word(s). R_BYTE works for instructions, too. + +If the parameter to a CONSTH instruction is a relocatable type, two +relocation records are written. The first has an r_type of R_IHIHALF +(33 octal) and a normal r_vaddr and r_symndx. The second relocation +record has an r_type of R_IHCONST (34 octal), a normal r_vaddr (which +is redundant), and an r_symndx containing the 32-bit constant offset +to the relocation instead of the actual symbol table index. This +second record is always written, even if the constant offset is zero. +The constant fields of the instruction are set to zero. +*/ + +/*--------------------------------------------------------------*/ + +/* +** Line number entry declaration and related definitions +*/ + +struct external_lineno +{ + union { + char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ + char l_paddr[4]; /* (physical) address of line number */ + } l_addr; + char l_lnno[2]; /* line number */ +}; + +#define LINENO struct external_lineno +#define LINESZ 6 /* sizeof (LINENO) */ + +/*--------------------------------------------------------------*/ + +/* +** Symbol entry declaration and related definitions +*/ + +#define SYMNMLEN 8 /* Number of characters in a symbol name */ + +struct external_syment +{ + union { + char e_name[SYMNMLEN]; + struct { + char e_zeroes[4]; + char e_offset[4]; + } e; + } e; + char e_value[4]; + char e_scnum[2]; + char e_type[2]; + char e_sclass[1]; + char e_numaux[1]; +}; + +#define SYMENT struct external_syment +#define SYMESZ sizeof(SYMENT) + +/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/ + +/* +** Storage class definitions - new classes for global registers. +*/ + +#define C_GLBLREG 19 /* global register */ +#define C_EXTREG 20 /* external global register */ +#define C_DEFREG 21 /* ext. def. of global register */ + + +/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/ + +/* +** Derived symbol mask/shifts. +*/ + +#define N_BTMASK (0xf) +#define N_BTSHFT (4) +#define N_TMASK (0x30) +#define N_TSHIFT (2) + +/*--------------------------------------------------------------*/ + +/* +** Auxiliary symbol table entry declaration and related +** definitions. +*/ + +#define FILNMLEN 14 /* # characters in a file name */ +#define DIMNUM 4 /* # array dimensions in auxiliary entry */ + +union external_auxent { + struct { + char x_tagndx[4]; /* str, un, or enum tag indx */ + union { + struct { + char x_lnno[2]; /* declaration line number */ + char x_size[2]; /* str/union/array size */ + } x_lnsz; + char x_fsize[4]; /* size of function */ + } x_misc; + union { + struct { /* if ISFCN, tag, or .bb */ + char x_lnnoptr[4]; /* ptr to fcn line # */ + char x_endndx[4]; /* entry ndx past block end */ + } x_fcn; + struct { /* if ISARY, up to 4 dimen. */ + char x_dimen[DIMNUM][2]; + } x_ary; + } x_fcnary; + char x_tvndx[2]; /* tv index */ + } x_sym; + + union { + char x_fname[FILNMLEN]; + struct { + char x_zeroes[4]; + char x_offset[4]; + } x_n; + } x_file; + + struct { + char x_scnlen[4]; /* section length */ + char x_nreloc[2]; /* # relocation entries */ + char x_nlinno[2]; /* # line numbers */ + } x_scn; + + struct { + char x_tvfill[4]; /* tv fill value */ + char x_tvlen[2]; /* length of .tv */ + char x_tvran[2][2]; /* tv range */ + } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ +}; + +#define AUXENT union external_auxent +#define AUXESZ 18 diff --git a/ld/config/hmake-rtbsd b/ld/config/hmake-rtbsd new file mode 100755 index 0000000..8c75d97 --- /dev/null +++ b/ld/config/hmake-rtbsd @@ -0,0 +1,4 @@ +YACC = yacc -d +HDEFINES = -DHOST_SYS=RTBSD_SYS -DNO_VARARGS +LDFLAGS = +CC=gcc diff --git a/ld/config/tmake-coff-a29k b/ld/config/tmake-coff-a29k new file mode 100755 index 0000000..5c55415 --- /dev/null +++ b/ld/config/tmake-coff-a29k @@ -0,0 +1 @@ +TDEFINES = -DDEFAULT_EMULATION=GLD29K_EMULATION_NAME diff --git a/ld/ldglda29k.c b/ld/ldglda29k.c new file mode 100755 index 0000000..45662f0 --- /dev/null +++ b/ld/ldglda29k.c @@ -0,0 +1,144 @@ +/* Copyright (C) 1991 Free Software Foundation, Inc. + +This file is part of GLD, the Gnu Linker. + +GLD is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 1, or (at your option) +any later version. + +GLD is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GLD; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* + * $Id:# +*/ + +/* + * emulate the original gld running on an a29k system + * + * Written by David Wood @ New York University + */ + + +#include "sysdep.h" +#include "bfd.h" + +#include "ld.h" +#include "config.h" +#include "ldemul.h" +#include "ldfile.h" +#include "ldmisc.h" + +extern boolean lang_float_flag; + + +extern enum bfd_architecture ldfile_output_architecture; +extern unsigned long ldfile_output_machine; +extern char *ldfile_output_machine_name; + +extern bfd *output_bfd; + + + +static void gld29k_before_parse() +{ +#ifndef NOTDEF /* Cross developing for now */ + ldfile_add_library_path("/lib"); + ldfile_add_library_path("/usr/lib"); + ldfile_add_library_path("/usr/local/lib"); +#endif + ldfile_output_architecture = bfd_arch_a29k; +} + + +static void +gld29k_after_parse() +{ + +} + +static void +gld29k_after_allocation() +{ + +} + +static void +gld29k_before_allocation() +{ + +} + +static void +gld29k_set_output_arch() +{ + /* Set the output architecture and machine if possible */ + unsigned long machine = 0; + bfd_set_arch_mach(output_bfd, ldfile_output_architecture, machine); +} + +static char * +gld29k_choose_target() +{ + char *from_outside = getenv(TARGET_ENVIRON); + if (from_outside != (char *)NULL) + return from_outside; + return GLD29K_TARGET; +} + +static void +gld29k_syslib() +{ + info("%S SYSLIB ignored\n"); +} + +static void +gld29k_hll(ignore) +char *ignore; +{ + info("%S HLL ignored\n"); +} + +static char *gld29k_script = +#include "ldglda29k.x" +; + +static char *gld29k_script_option_Ur = +#include "ldglda29kUr.x" +; +static char *gld29k_script_option_r = +#include "ldglda29kr.x" +; +static char *gld29k_get_script() +{ + extern ld_config_type config; + if (config.relocateable_output == true && + config.build_constructors == true) { + return gld29k_script_option_Ur; + } + if (config.relocateable_output) { + return gld29k_script_option_r; + } + + return gld29k_script; +} +struct ld_emulation_xfer_struct ld_gld29k_emulation = +{ + gld29k_before_parse, + gld29k_syslib, + gld29k_hll, + gld29k_after_parse, + gld29k_after_allocation, + gld29k_set_output_arch, + gld29k_choose_target, + gld29k_before_allocation, + gld29k_get_script, +}; + diff --git a/ld/ldglda29k.script b/ld/ldglda29k.script new file mode 100755 index 0000000..6d7d19a --- /dev/null +++ b/ld/ldglda29k.script @@ -0,0 +1,38 @@ +OUTPUT_FORMAT("coff-a29k-big") +INPUT(/lab3/u3/sym1/tools/usr/lib/segments.o) /* Has .rstack/.mstack */ +SEARCH_DIR(/lab3/u3/sym1/tools/lib) +SEARCH_DIR(/lab3/u3/sym1/tools/usr/lib) +SEARCH_DIR(/lab3/u3/sym1/tools/usr/local/lib) +MEMORY { + text : ORIGIN = 0x1000000, LENGTH = 0x1000000 + talias : ORIGIN = 0x2000000, LENGTH = 0x1000000 + data : ORIGIN = 0x3000000, LENGTH = 0x1000000 + mstack : ORIGIN = 0x4000000, LENGTH = 0x1000000 + rstack : ORIGIN = 0x5000000, LENGTH = 0x1000000 +} +SECTIONS +{ + .text : { + *(.text) + __etext = .; + *(.lit) + *(.shdata) + } > text + .shbss SIZEOF(.text) + ADDR(.text) : { + *(.shbss) + } + .talias : { } > talias + .data : { + *(.data) + __edata = .; + } > data + .bss SIZEOF(.data) + ADDR(.data) : + { + *(.bss) + [COMMON] + __end = ALIGN(0x8); + } + .mstack : { } > mstack + .rstack : { } > rstack +} + diff --git a/ld/ldglda29kUr.script b/ld/ldglda29kUr.script new file mode 100755 index 0000000..c8e8e2c --- /dev/null +++ b/ld/ldglda29kUr.script @@ -0,0 +1,32 @@ +OUTPUT_FORMAT("coff-a29k-big") +SEARCH_DIR(/lab3/u3/sym1/tools/lib) +SEARCH_DIR(/lab3/u3/sym1/tools/usr/lib) +SEARCH_DIR(/lab3/u3/sym1/tools/usr/local/lib) +MEMORY { + text : ORIGIN = 0x1000000, LENGTH = 0x1000000 + talias : ORIGIN = 0x2000000, LENGTH = 0x1000000 + data : ORIGIN = 0x3000000, LENGTH = 0x1000000 + mstack : ORIGIN = 0x4000000, LENGTH = 0x1000000 + rstack : ORIGIN = 0x5000000, LENGTH = 0x1000000 +} +SECTIONS +{ + .text 0 : { + *(.text) + __etext = .; + *(.lit) + *(.shdata) + } > text + .shbss SIZEOF(.text) + ADDR(.text) : { + *(.shbss) + } + .data SIZEOF(.shbss) + ADDR(.shbss): { + *(.data) + } + .bss SIZEOF(.data) + ADDR(.data) : + { + *(.bss) + [COMMON] + } +} + diff --git a/ld/ldglda29kr.script b/ld/ldglda29kr.script new file mode 100755 index 0000000..c8e8e2c --- /dev/null +++ b/ld/ldglda29kr.script @@ -0,0 +1,32 @@ +OUTPUT_FORMAT("coff-a29k-big") +SEARCH_DIR(/lab3/u3/sym1/tools/lib) +SEARCH_DIR(/lab3/u3/sym1/tools/usr/lib) +SEARCH_DIR(/lab3/u3/sym1/tools/usr/local/lib) +MEMORY { + text : ORIGIN = 0x1000000, LENGTH = 0x1000000 + talias : ORIGIN = 0x2000000, LENGTH = 0x1000000 + data : ORIGIN = 0x3000000, LENGTH = 0x1000000 + mstack : ORIGIN = 0x4000000, LENGTH = 0x1000000 + rstack : ORIGIN = 0x5000000, LENGTH = 0x1000000 +} +SECTIONS +{ + .text 0 : { + *(.text) + __etext = .; + *(.lit) + *(.shdata) + } > text + .shbss SIZEOF(.text) + ADDR(.text) : { + *(.shbss) + } + .data SIZEOF(.shbss) + ADDR(.shbss): { + *(.data) + } + .bss SIZEOF(.data) + ADDR(.data) : + { + *(.bss) + [COMMON] + } +} + |