diff options
Diffstat (limited to 'include/aout')
| -rw-r--r-- | include/aout/encap.h | 135 | ||||
| -rw-r--r-- | include/aout/host.h | 22 | ||||
| -rw-r--r-- | include/aout/hp.h | 82 | ||||
| -rw-r--r-- | include/aout/reloc.h | 66 | ||||
| -rw-r--r-- | include/aout/sun4.h | 30 |
5 files changed, 335 insertions, 0 deletions
diff --git a/include/aout/encap.h b/include/aout/encap.h new file mode 100644 index 0000000..cebedf3 --- /dev/null +++ b/include/aout/encap.h @@ -0,0 +1,135 @@ +/* Yet Another Try at encapsulating bsd object files in coff. + Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc. + Written by Pace Willisson 12/9/88 + + This file is obsolete. It needs to be converted to just define a bunch + of stuff that BFD can use to do coff-encapsulated files. --gnu@cygnus.com + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* + * We only use the coff headers to tell the kernel + * how to exec the file. Therefore, the only fields that need to + * be filled in are the scnptr and vaddr for the text and data + * sections, and the vaddr for the bss. As far as coff is concerned, + * there is no symbol table, relocation, or line numbers. + * + * A normal bsd header (struct exec) is placed after the coff headers, + * and before the real text. I defined a the new fields 'a_machtype' + * and a_flags. If a_machtype is M_386, and a_flags & A_ENCAP is + * true, then the bsd header is preceeded by a coff header. Macros + * like N_TXTOFF and N_TXTADDR use this field to find the bsd header. + * + * The only problem is to track down the bsd exec header. The + * macros HEADER_OFFSET, etc do this. + */ + +#define N_FLAGS_COFF_ENCAPSULATE 0x20 /* coff header precedes bsd header */ + +/* Describe the COFF header used for encapsulation. */ + +struct coffheader +{ + /* filehdr */ + unsigned short f_magic; + unsigned short f_nscns; + long f_timdat; + long f_symptr; + long f_nsyms; + unsigned short f_opthdr; + unsigned short f_flags; + /* aouthdr */ + short magic; + short vstamp; + long tsize; + long dsize; + long bsize; + long entry; + long text_start; + long data_start; + struct coffscn + { + char s_name[8]; + long s_paddr; + long s_vaddr; + long s_size; + long s_scnptr; + long s_relptr; + long s_lnnoptr; + unsigned short s_nreloc; + unsigned short s_nlnno; + long s_flags; + } scns[3]; +}; + +/* Describe some of the parameters of the encapsulation, + including how to find the encapsulated BSD header. */ + +/* FIXME, this is dumb. The same tools can't handle a.outs for different + architectures, just because COFF_MAGIC is different; so you need a + separate GNU nm for every architecture!!? Unfortunately, it needs to + be this way, since the COFF_MAGIC value is determined by the kernel + we're trying to fool here. */ + +#define COFF_MAGIC_I386 0514 /* I386MAGIC */ +#define COFF_MAGIC_M68K 0520 /* MC68MAGIC */ +#define COFF_MAGIC_A29K 0x17A /* Used by asm29k cross-tools */ + +#ifdef COFF_MAGIC +short __header_offset_temp; +#define HEADER_OFFSET(f) \ + (__header_offset_temp = 0, \ + fread ((char *)&__header_offset_temp, sizeof (short), 1, (f)), \ + fseek ((f), -sizeof (short), 1), \ + __header_offset_temp==COFF_MAGIC ? sizeof(struct coffheader) : 0) +#else +#define HEADER_OFFSET(f) 0 +#endif + +#define HEADER_SEEK(f) (fseek ((f), HEADER_OFFSET((f)), 1)) + +/* Describe the characteristics of the BSD header + that appears inside the encapsulation. */ + +/* Encapsulated coff files that are linked ZMAGIC have a text segment + offset just past the header (and a matching TXTADDR), excluding + the headers from the text segment proper but keeping the physical + layout and the virtual memory layout page-aligned. + + Non-encapsulated a.out files that are linked ZMAGIC have a text + segment that starts at 0 and an N_TXTADR similarly offset to 0. + They too are page-aligned with each other, but they include the + a.out header as part of the text. + + The _N_HDROFF gets sizeof struct exec added to it, so we have + to compensate here. See <a.out.gnu.h>. */ + +#undef _N_HDROFF +#undef N_TXTADDR +#undef N_DATADDR + +#define _N_HDROFF(x) ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \ + sizeof (struct coffheader) : 0) + +/* Address of text segment in memory after it is loaded. */ +#define N_TXTADDR(x) \ + ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \ + sizeof (struct coffheader) + sizeof (struct exec) : 0) +#define SEGMENT_SIZE 0x400000 + +#define N_DATADDR(x) \ + ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \ + (SEGMENT_SIZE + ((N_TXTADDR(x)+(x).a_text-1) & ~(SEGMENT_SIZE-1))) : \ + (N_TXTADDR(x)+(x).a_text)) diff --git a/include/aout/host.h b/include/aout/host.h new file mode 100644 index 0000000..5d3488a --- /dev/null +++ b/include/aout/host.h @@ -0,0 +1,22 @@ +/* Parameters about the a.out format, based on the host system on which + the program is compiled. */ + +/* Address of data segment in memory after it is loaded. + It is up to you to define SEGMENT_SIZE + on machines not listed here. */ +#ifndef SEGMENT_SIZE +#if defined(hp300) || defined(pyr) +#define SEGMENT_SIZE page_size +#endif +#ifdef sony +#define SEGMENT_SIZE 0x1000 +#endif /* Sony. */ +#ifdef is68k +#define SEGMENT_SIZE 0x20000 +#endif +#if defined(m68k) && defined(PORTAR) +#define PAGE_SIZE 0x400 +#define SEGMENT_SIZE PAGE_SIZE +#endif +#endif /*!defined(SEGMENT_SIZE)*/ + diff --git a/include/aout/hp.h b/include/aout/hp.h new file mode 100644 index 0000000..dbd2af9 --- /dev/null +++ b/include/aout/hp.h @@ -0,0 +1,82 @@ +/* Special version of <a.out.h> for use under hp-ux. + Copyright 1988, 1991 Free Software Foundation, Inc. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* THIS FILE IS OBSOLETE. It needs to be revised as a variant "external" + a.out format for use with BFD. */ + +/* The `exec' structure and overall layout must be close to HP's when + we are running on an HP system, otherwise we will not be able to + execute the resulting file. */ + +/* Allow this file to be included twice. */ +#ifndef __GNU_EXEC_MACROS__ + +struct exec +{ + unsigned short a_machtype; /* machine type */ + unsigned short a_magic; /* magic number */ + unsigned long a_spare1; + unsigned long a_spare2; + unsigned long a_text; /* length of text, in bytes */ + unsigned long a_data; /* length of data, in bytes */ + unsigned long a_bss; /* length of uninitialized data area for file, in bytes */ + unsigned long a_trsize; /* length of relocation info for text, in bytes */ + unsigned long a_drsize; /* length of relocation info for data, in bytes */ + unsigned long a_spare3; /* HP = pascal interface size */ + unsigned long a_spare4; /* HP = symbol table size */ + unsigned long a_spare5; /* HP = debug name table size */ + unsigned long a_entry; /* start address */ + unsigned long a_spare6; /* HP = source line table size */ + unsigned long a_spare7; /* HP = value table size */ + unsigned long a_syms; /* length of symbol table data in file, in bytes */ + unsigned long a_spare8; +}; + +/* Tell a.out.gnu.h not to define `struct exec'. */ +#define __STRUCT_EXEC_OVERRIDE__ + +#include "../a.out.gnu.h" + +#undef N_MAGIC +#undef N_MACHTYPE +#undef N_FLAGS +#undef N_SET_INFO +#undef N_SET_MAGIC +#undef N_SET_MACHTYPE +#undef N_SET_FLAGS + +#define N_MAGIC(exec) ((exec) . a_magic) +#define N_MACHTYPE(exec) ((exec) . a_machtype) +#define N_SET_MAGIC(exec, magic) (((exec) . a_magic) = (magic)) +#define N_SET_MACHTYPE(exec, machtype) (((exec) . a_machtype) = (machtype)) + +#undef N_BADMAG +#define N_BADMAG(x) ((_N_BADMAG (x)) || (_N_BADMACH (x))) + +#define _N_BADMACH(x) \ +(((N_MACHTYPE (x)) != HP9000S200_ID) && \ + ((N_MACHTYPE (x)) != HP98x6_ID)) + +#define HP98x6_ID 0x20A +#define HP9000S200_ID 0x20C + +#undef _N_HDROFF +#define _N_HDROFF(x) (SEGMENT_SIZE - (sizeof (struct exec))) + +#define SEGMENT_SIZE 0x1000 + +#endif /* __GNU_EXEC_MACROS__ */ diff --git a/include/aout/reloc.h b/include/aout/reloc.h new file mode 100644 index 0000000..1811b73 --- /dev/null +++ b/include/aout/reloc.h @@ -0,0 +1,66 @@ +/* reloc.h -- Header file for relocation information. + Copyright 1989-1991 Free Software Foundation, Inc. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* Relocation types for a.out files using reloc_info_extended + (SPARC and AMD 29000). */ + +#ifndef _RELOC_H_READ_ +#define _RELOC_H_READ_ 1 + +enum reloc_type + { + RELOC_8, RELOC_16, RELOC_32, /* simple relocations */ + RELOC_DISP8, RELOC_DISP16, RELOC_DISP32, /* pc-rel displacement */ + RELOC_WDISP30, RELOC_WDISP22, + RELOC_HI22, RELOC_22, + RELOC_13, RELOC_LO10, + RELOC_SFA_BASE, RELOC_SFA_OFF13, + RELOC_BASE10, RELOC_BASE13, RELOC_BASE22, /* P.I.C. (base-relative) */ + RELOC_PC10, RELOC_PC22, /* for some sort of pc-rel P.I.C. (?) */ + RELOC_JMP_TBL, /* P.I.C. jump table */ + RELOC_SEGOFF16, /* reputedly for shared libraries somehow */ + RELOC_GLOB_DAT, RELOC_JMP_SLOT, RELOC_RELATIVE, + RELOC_11, + RELOC_WDISP2_14, + RELOC_WDISP19, + RELOC_HHI22, + RELOC_HLO10, + + /* 29K relocation types */ + RELOC_JUMPTARG, RELOC_CONST, RELOC_CONSTH, + + RELOC_WDISP14, RELOC_WDISP21, + + NO_RELOC + }; + +#define RELOC_TYPE_NAMES \ +"8", "16", "32", "DISP8", \ +"DISP16", "DISP32", "WDISP30", "WDISP22", \ +"HI22", "22", "13", "LO10", \ +"SFA_BASE", "SFAOFF13", "BASE10", "BASE13", \ +"BASE22", "PC10", "PC22", "JMP_TBL", \ +"SEGOFF16", "GLOB_DAT", "JMP_SLOT", "RELATIVE", \ +"11", "WDISP2_14", "WDISP19", "HHI22", \ +"HLO10", \ +"JUMPTARG", "CONST", "CONSTH", "WDISP14", \ +"WDISP21", \ +"NO_RELOC" + +#endif /* _RELOC_H_READ_ */ + +/* end of reloc.h */ diff --git a/include/aout/sun4.h b/include/aout/sun4.h new file mode 100644 index 0000000..5ad4845 --- /dev/null +++ b/include/aout/sun4.h @@ -0,0 +1,30 @@ +/* SPARC-specific values for a.out files */ + +#define PAGE_SIZE 0x2000 /* 8K. aka NBPG in <sys/param.h> */ +/* Note that some SPARCs have 4K pages, some 8K, some others. */ + +#define SEG_SIZE_SPARC PAGE_SIZE +#define SEG_SIZE_SUN3 0x20000 /* Resolution of r/w protection hw */ + +#define TEXT_START_ADDR PAGE_SIZE /* Location 0 is not accessible */ +#define N_HEADER_IN_TEXT(x) 1 + +/* Non-default definitions of the accessor macros... */ + +/* Segment size varies on Sun-3 versus Sun-4. */ + +#define N_SEGSIZE(x) (N_MACHTYPE(x) == M_SPARC? SEG_SIZE_SPARC: \ + N_MACHTYPE(x) == M_68020? SEG_SIZE_SUN3: \ + /* Guess? */ PAGE_SIZE) + +/* Virtual Address of text segment from the a.out file. For OMAGIC, + (almost always "unlinked .o's" these days), should be zero. + Sun added a kludge so that shared libraries linked ZMAGIC get + an address of zero if a_entry (!!!) is lower than the otherwise + expected text address. These kludges have gotta go! + For linked files, should reflect reality if we know it. */ + +#define N_TXTADDR(x) \ + (N_MAGIC(x)==OMAGIC? 0 \ + : (N_MAGIC(x) == ZMAGIC && (x).a_entry < TEXT_START_ADDR)? 0 \ + : TEXT_START_ADDR+EXEC_BYTES_SIZE) |