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4770745624
Tue Dec 3 08:38:15 1996 Richard Henderson <rth@tamu.edu> * sysdeps/unix/alpha/sysdep.S: Remove definition of __errno_location. Reformat copyright. * elf/rtld.c (_dl_start): Don't dereference the value returned by elf_machine_got to get _DYNAMIC, instead call new function elf_machine_dynamic. * sysdeps/alpha/dl-machine.h: Permute elf_machine_got to elf_machine_dynamic. Reformat copyright. * sysdeps/i386/dl-machine.h: Likewise. * sysdeps/m68k/dl-machine.h: Likewise. * sysdeps/mips/dl-machine.h: Likewise. * sysdeps/sparc/dl-machine.h: Likewise. * sysdeps/stub/dl-machine.h: Likewise. Tue Oct 15 23:46:00 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * MakeTAGS (sysdep_dirs): Include add-on sysdep directories. Tue Dec 3 02:06:18 1996 Ulrich Drepper <drepper@cygnus.com> * Makerules ($(libdir)/libc.so): Make first line of generated link script contain `/* GNU ld script'. This will be used in ldconfig to check for linker scripts. * sysdeps/mach/hurd/libc-ldscript: Likewise. * sysdeps/mach/hurd/libc_p-ldscript: Likewise. * stdlib/getsubopt.c: Update copyright. Correct typo in comment.
340 lines
9.7 KiB
C
340 lines
9.7 KiB
C
#ifndef __A_OUT_GNU_H__
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#define __A_OUT_GNU_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define __GNU_EXEC_MACROS__
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#ifndef __STRUCT_EXEC_OVERRIDE__
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struct exec
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{
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unsigned long a_info; /* Use macros N_MAGIC, etc for access */
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unsigned a_text; /* size of text, in bytes */
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unsigned a_data; /* size of data, in bytes */
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unsigned a_bss; /* size of uninitialized data area, in bytes */
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unsigned a_syms; /* length of symbol table data, in bytes */
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unsigned a_entry; /* start address */
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unsigned a_trsize; /* size of reloc info for text, in bytes */
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unsigned a_drsize; /* size of reloc info for data, in bytes */
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#if defined (sequent) && defined (i386)
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struct gdtbl
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{ /* Global Descriptor Table */
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unsigned g_code[2];
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unsigned g_data[2];
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unsigned g_desc[2];
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} a_gdtbl;
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unsigned a_shdata; /* size of initialized shared data */
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unsigned a_shbss; /* size of uninitialized shared data */
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unsigned a_shdrsize; /* size of shared data relocation */
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unsigned a_bootstrap[11]; /* bootstrap for standalone */
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unsigned a_reserved[3]; /* reserved for future use */
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unsigned a_version; /* object version */
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#endif /* Sequent Symmetry, Dynix 3.x */
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};
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#endif /* __STRUCT_EXEC_OVERRIDE__ */
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/* these go in the N_MACHTYPE field */
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enum machine_type {
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#if defined (M_OLDSUN2)
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M__OLDSUN2 = M_OLDSUN2,
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#else
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M_OLDSUN2 = 0,
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#endif
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#if defined (M_68010)
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M__68010 = M_68010,
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#else
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M_68010 = 1,
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#endif
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#if defined (M_68020)
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M__68020 = M_68020,
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#else
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M_68020 = 2,
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#endif
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#if defined (M_SPARC)
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M__SPARC = M_SPARC,
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#else
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M_SPARC = 3,
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#endif
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/* skip a bunch so we don't run into any of sun's numbers */
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M_386 = 100
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};
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#if defined (sequent) && defined (i386)
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/* Dynix 3 wants the magic number to be the whole first longword. */
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#define N_MAGIC(exec) ((exec).a_info)
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#define N_MACHTYPE(exec) 0
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#define N_FLAGS(exec) 0
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#define N_SET_INFO(exec, magic, type, flags) N_SET_MAGIC ((exec), (magic))
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#define N_SET_MAGIC(exec, magic) ((exec).a_info = (magic))
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#define N_SET_MACHTYPE(exec, machtype) ((void) 0)
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#define N_SET_FLAGS(exec, flags) ((void) 0)
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#define OMAGIC 0x12eb /* impure format - for .o's */
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#define ZMAGIC 0x22eb /* demand load format - zero at zero */
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#define NMAGIC you lose /* syntax error -- no pure format */
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#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != ZMAGIC)
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#define N_ADDRADJ(x) (N_MAGIC(x) == ZMAGIC ? SEGMENT_SIZE : 0)
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#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text - N_ADDRADJ(x))
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#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data + (x).a_shdata)
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#define N_SYMOFF(x) (N_DRELOFF(x) + (x).a_drsize + (x).a_shdrsize)
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#define N_TXTADDR(x) SEGMENT_SIZE
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#define N_COMM 0x0a /** conflicts with N_INDR **/
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#define N_FN 0x0c
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/* Note that the Dynix binutils believe that N_SET[TDB] are
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N_SH{DATA,BSS,COMM} -- be wary when mixing GNU & Dynix objects. */
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#define PAGE_SIZE 4096
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#define SEGMENT_SIZE PAGE_SIZE
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#else /* !(sequent && i386) */
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#if !defined (N_MAGIC)
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#define N_MAGIC(exec) ((exec).a_info & 0xffff)
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#endif
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#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
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#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
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#define N_SET_INFO(exec, magic, type, flags) \
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((exec).a_info = ((magic) & 0xffff) \
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| (((int)(type) & 0xff) << 16) \
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| (((flags) & 0xff) << 24))
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#define N_SET_MAGIC(exec, magic) \
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((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
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#define N_SET_MACHTYPE(exec, machtype) \
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((exec).a_info = \
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((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
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#define N_SET_FLAGS(exec, flags) \
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((exec).a_info = \
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((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
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#endif /* sequent && i386 */
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#ifndef OMAGIC
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/* Code indicating object file or impure executable. */
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#define OMAGIC 0407
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/* Code indicating pure executable. */
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#define NMAGIC 0410
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/* Code indicating demand-paged executable. */
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#define ZMAGIC 0413
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#endif /* not OMAGIC */
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#if !defined (N_BADMAG)
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#define N_BADMAG(x) \
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(N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \
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&& N_MAGIC(x) != ZMAGIC)
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#endif
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#define _N_BADMAG(x) \
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(N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \
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&& N_MAGIC(x) != ZMAGIC)
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#ifndef sparc
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#define _N_HDROFF(x) (SEGMENT_SIZE - sizeof (struct exec))
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#else
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#define _N_HDROFF(x) (- sizeof (struct exec))
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#endif
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#if !defined (N_TXTOFF)
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#define N_TXTOFF(x) \
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(N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : sizeof (struct exec))
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#endif
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#if !defined (N_DATOFF)
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#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
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#endif
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#if !defined (N_TRELOFF)
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#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
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#endif
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#if !defined (N_DRELOFF)
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#define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize)
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#endif
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#if !defined (N_SYMOFF)
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#define N_SYMOFF(x) (N_DRELOFF(x) + (x).a_drsize)
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#endif
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#if !defined (N_STROFF)
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#define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms)
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#endif
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/* Address of text segment in memory after it is loaded. */
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#if !defined (N_TXTADDR)
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#define N_TXTADDR(x) 0
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#endif
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/* Address of data segment in memory after it is loaded.
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Note that it is up to you to define SEGMENT_SIZE
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on machines not listed here. */
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#if defined (hp300) || defined (mips)
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#define PAGE_SIZE 4096
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#endif
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#if defined (sparc) || defined (NeXT)
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#define PAGE_SIZE 0x2000
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#endif
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#if defined (sony) || (defined (sun) && defined (mc68000))
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#define SEGMENT_SIZE 0x2000
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#endif /* Sony or 68k Sun. */
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#ifdef is68k
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#define SEGMENT_SIZE 0x20000
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#endif
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#if defined(m68k) && defined(PORTAR)
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#define PAGE_SIZE 0x400
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#endif
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#if defined(i386) && !defined(sequent)
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/* For COFF encapsulation. */
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#define SEGMENT_SIZE 0x400000
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#endif
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#ifndef SEGMENT_SIZE
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/* This used to be first in this paragraph and under:
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if (defined(vax) || defined(hp300) || defined(pyr) || defined(sparc) \
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|| (defined(m68k) && defined(PORTAR)) \
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|| defined (NeXT) || defined (mips)) */
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#define SEGMENT_SIZE PAGE_SIZE
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#endif
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#ifndef PAGE_SIZE
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/* This value is for i386-minix, but that has no predefine.
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Making it default will only cause confusion on machines
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which have no proper value defined. */
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#define PAGE_SIZE 16
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#endif
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#define PAGSIZ PAGE_SIZE
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#define SEGSIZ SEGMENT_SIZE
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#define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1))
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#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
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#ifndef N_DATADDR
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#define N_DATADDR(x) \
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(N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \
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: (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
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#endif
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/* Address of bss segment in memory after it is loaded. */
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#if !defined (N_BSSADDR)
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#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
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#endif
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#if !defined (N_NLIST_DECLARED)
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struct nlist {
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union {
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char *n_name;
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struct nlist *n_next;
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long n_strx;
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} n_un;
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unsigned char n_type;
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char n_other;
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short n_desc;
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unsigned long n_value;
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};
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#endif /* no N_NLIST_DECLARED. */
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#if !defined (N_UNDF)
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#define N_UNDF 0
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#endif
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#if !defined (N_ABS)
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#define N_ABS 2
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#endif
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#if !defined (N_TEXT)
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#define N_TEXT 4
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#endif
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#if !defined (N_DATA)
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#define N_DATA 6
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#endif
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#if !defined (N_BSS)
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#define N_BSS 8
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#endif
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#if !defined (N_COMM)
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#define N_COMM 18
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#endif
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#if !defined (N_FN)
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#define N_FN 15
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#endif
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#if !defined (N_EXT)
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#define N_EXT 1
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#endif
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#if !defined (N_TYPE)
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#define N_TYPE 036
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#endif
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#if !defined (N_STAB)
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#define N_STAB 0340
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#endif
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/* The following type indicates the definition of a symbol as being
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an indirect reference to another symbol. The other symbol
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appears as an undefined reference, immediately following this symbol.
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Indirection is asymmetrical. The other symbol's value will be used
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to satisfy requests for the indirect symbol, but not vice versa.
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If the other symbol does not have a definition, libraries will
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be searched to find a definition. */
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#define N_INDR 0xa
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/* The following symbols refer to set elements.
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All the N_SET[ATDB] symbols with the same name form one set.
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Space is allocated for the set in the text section, and each set
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element's value is stored into one word of the space.
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The first word of the space is the length of the set (number of elements).
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The address of the set is made into an N_SETV symbol
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whose name is the same as the name of the set.
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This symbol acts like a N_DATA global symbol
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in that it can satisfy undefined external references. */
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/* These appear as input to LD, in a .o file. */
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#define N_SETA 0x14 /* Absolute set element symbol */
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#define N_SETT 0x16 /* Text set element symbol */
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#define N_SETD 0x18 /* Data set element symbol */
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#define N_SETB 0x1A /* Bss set element symbol */
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/* This is output from LD. */
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#define N_SETV 0x1C /* Pointer to set vector in data area. */
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#if !defined (N_RELOCATION_INFO_DECLARED)
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/* This structure describes a single relocation to be performed.
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The text-relocation section of the file is a vector of these structures,
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all of which apply to the text section.
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Likewise, the data-relocation section applies to the data section. */
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struct relocation_info
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{
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/* Address (within segment) to be relocated. */
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int r_address;
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/* The meaning of r_symbolnum depends on r_extern. */
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unsigned int r_symbolnum:24;
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/* Nonzero means value is a pc-relative offset
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and it should be relocated for changes in its own address
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as well as for changes in the symbol or section specified. */
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unsigned int r_pcrel:1;
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/* Length (as exponent of 2) of the field to be relocated.
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Thus, a value of 2 indicates 1<<2 bytes. */
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unsigned int r_length:2;
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/* 1 => relocate with value of symbol.
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r_symbolnum is the index of the symbol
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in file's the symbol table.
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0 => relocate with the address of a segment.
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r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS
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(the N_EXT bit may be set also, but signifies nothing). */
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unsigned int r_extern:1;
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/* Four bits that aren't used, but when writing an object file
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it is desirable to clear them. */
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unsigned int r_pad:4;
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};
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#endif /* no N_RELOCATION_INFO_DECLARED. */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __A_OUT_GNU_H__ */
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