update from main archive 961203

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.

1 files changed, 339 insertions, 0 deletions

diff --git a/sysdeps/generic/a.out.h b/sysdeps/generic/a.out.h
new file mode 100644
index 0000000000..2c13762703
--- /dev/null
+++ b/sysdeps/generic/a.out.h
@@ -0,0 +1,339 @@
+#ifndef __A_OUT_GNU_H__
+#define __A_OUT_GNU_H__
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#define __GNU_EXEC_MACROS__
+
+#ifndef __STRUCT_EXEC_OVERRIDE__
+
+struct exec
+{
+  unsigned long a_info;		/* Use macros N_MAGIC, etc for access */
+  unsigned a_text;		/* size of text, in bytes */
+  unsigned a_data;		/* size of data, in bytes */
+  unsigned a_bss;		/* size of uninitialized data area, in bytes */
+  unsigned a_syms;		/* length of symbol table data, in bytes */
+  unsigned a_entry;		/* start address */
+  unsigned a_trsize;		/* size of reloc info for text, in bytes */
+  unsigned a_drsize;		/* size of reloc info for data, in bytes */
+
+#if defined (sequent) && defined (i386)
+  struct gdtbl
+    {				/* Global Descriptor Table */
+      unsigned g_code[2];
+      unsigned g_data[2];
+      unsigned g_desc[2];
+    } a_gdtbl;
+   unsigned a_shdata;		/* size of initialized shared data */
+   unsigned a_shbss;		/* size of uninitialized shared data */
+   unsigned a_shdrsize;		/* size of shared data relocation */
+   unsigned a_bootstrap[11];	/* bootstrap for standalone */
+   unsigned a_reserved[3];	/* reserved for future use */
+   unsigned a_version;		/* object version */
+#endif /* Sequent Symmetry, Dynix 3.x */
+};
+
+#endif /* __STRUCT_EXEC_OVERRIDE__ */
+
+/* these go in the N_MACHTYPE field */
+enum machine_type {
+#if defined (M_OLDSUN2)
+  M__OLDSUN2 = M_OLDSUN2,
+#else
+  M_OLDSUN2 = 0,
+#endif
+#if defined (M_68010)
+  M__68010 = M_68010,
+#else
+  M_68010 = 1,
+#endif
+#if defined (M_68020)
+  M__68020 = M_68020,
+#else
+  M_68020 = 2,
+#endif
+#if defined (M_SPARC)
+  M__SPARC = M_SPARC,
+#else
+  M_SPARC = 3,
+#endif
+  /* skip a bunch so we don't run into any of sun's numbers */
+  M_386 = 100
+};
+
+#if defined (sequent) && defined (i386)
+
+/* Dynix 3 wants the magic number to be the whole first longword.  */
+
+#define N_MAGIC(exec)		((exec).a_info)
+#define N_MACHTYPE(exec)	0
+#define N_FLAGS(exec)		0
+#define N_SET_INFO(exec, magic, type, flags) N_SET_MAGIC ((exec), (magic))
+#define N_SET_MAGIC(exec, magic)	((exec).a_info = (magic))
+#define N_SET_MACHTYPE(exec, machtype)	((void) 0)
+#define N_SET_FLAGS(exec, flags)	((void) 0)
+#define	OMAGIC		0x12eb	/* impure format - for .o's */
+#define	ZMAGIC		0x22eb	/* demand load format - zero at zero */
+#define NMAGIC		you lose /* syntax error -- no pure format */
+#define N_BADMAG(x)	(N_MAGIC(x) != OMAGIC && N_MAGIC(x) != ZMAGIC)
+#define N_ADDRADJ(x)	(N_MAGIC(x) == ZMAGIC ? SEGMENT_SIZE : 0)
+#define N_DATOFF(x)	(N_TXTOFF(x) + (x).a_text - N_ADDRADJ(x))
+#define N_TRELOFF(x)	(N_DATOFF(x) + (x).a_data + (x).a_shdata)
+#define N_SYMOFF(x)	(N_DRELOFF(x) + (x).a_drsize + (x).a_shdrsize)
+#define N_TXTADDR(x)	SEGMENT_SIZE
+#define N_COMM		0x0a	/** conflicts with N_INDR **/
+#define N_FN		0x0c
+/* Note that the Dynix binutils believe that N_SET[TDB] are
+   N_SH{DATA,BSS,COMM} -- be wary when mixing GNU & Dynix objects.  */
+#define PAGE_SIZE	4096
+#define SEGMENT_SIZE	PAGE_SIZE
+
+#else /* !(sequent && i386) */
+
+#if !defined (N_MAGIC)
+#define N_MAGIC(exec) ((exec).a_info & 0xffff)
+#endif
+#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
+#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
+#define N_SET_INFO(exec, magic, type, flags) \
+	((exec).a_info = ((magic) & 0xffff) \
+	 | (((int)(type) & 0xff) << 16) \
+	 | (((flags) & 0xff) << 24))
+#define N_SET_MAGIC(exec, magic) \
+	((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
+
+#define N_SET_MACHTYPE(exec, machtype) \
+	((exec).a_info = \
+	 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
+
+#define N_SET_FLAGS(exec, flags) \
+	((exec).a_info = \
+	 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
+
+#endif	/* sequent && i386 */
+
+#ifndef OMAGIC
+/* Code indicating object file or impure executable.  */
+#define OMAGIC 0407
+/* Code indicating pure executable.  */
+#define NMAGIC 0410
+/* Code indicating demand-paged executable.  */
+#define ZMAGIC 0413
+#endif /* not OMAGIC */
+
+#if !defined (N_BADMAG)
+#define N_BADMAG(x)					\
+ (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC		\
+  && N_MAGIC(x) != ZMAGIC)
+#endif
+
+#define _N_BADMAG(x)					\
+ (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC		\
+  && N_MAGIC(x) != ZMAGIC)
+
+#ifndef	sparc
+#define _N_HDROFF(x) (SEGMENT_SIZE - sizeof (struct exec))
+#else
+#define _N_HDROFF(x) (- sizeof (struct exec))
+#endif
+
+#if !defined (N_TXTOFF)
+#define N_TXTOFF(x) \
+ (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : sizeof (struct exec))
+#endif
+
+#if !defined (N_DATOFF)
+#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
+#endif
+
+#if !defined (N_TRELOFF)
+#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
+#endif
+
+#if !defined (N_DRELOFF)
+#define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize)
+#endif
+
+#if !defined (N_SYMOFF)
+#define N_SYMOFF(x) (N_DRELOFF(x) + (x).a_drsize)
+#endif
+
+#if !defined (N_STROFF)
+#define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms)
+#endif
+
+/* Address of text segment in memory after it is loaded.  */
+#if !defined (N_TXTADDR)
+#define N_TXTADDR(x) 0
+#endif
+
+/* Address of data segment in memory after it is loaded.
+   Note that it is up to you to define SEGMENT_SIZE
+   on machines not listed here.  */
+#if	defined (hp300) || defined (mips)
+#define	PAGE_SIZE	4096
+#endif
+#if	defined (sparc) || defined (NeXT)
+#define	PAGE_SIZE	0x2000
+#endif
+#if	defined (sony) || (defined (sun) && defined (mc68000))
+#define	SEGMENT_SIZE	0x2000
+#endif	/* Sony or 68k Sun.  */
+#ifdef is68k
+#define SEGMENT_SIZE 0x20000
+#endif
+#if defined(m68k) && defined(PORTAR)
+#define PAGE_SIZE 0x400
+#endif
+#if defined(i386) && !defined(sequent)
+/* For COFF encapsulation.  */
+#define SEGMENT_SIZE 0x400000
+#endif
+#ifndef	SEGMENT_SIZE
+/* This used to be first in this paragraph and under:
+   if (defined(vax) || defined(hp300) || defined(pyr) || defined(sparc) \
+     || (defined(m68k) && defined(PORTAR)) \
+     || defined (NeXT) || defined (mips)) */
+#define SEGMENT_SIZE PAGE_SIZE
+#endif
+#ifndef	PAGE_SIZE
+/* This value is for i386-minix, but that has no predefine.
+   Making it default will only cause confusion on machines
+   which have no proper value defined.  */
+#define	PAGE_SIZE 16
+#endif
+
+#define	PAGSIZ	PAGE_SIZE
+#define	SEGSIZ	SEGMENT_SIZE
+
+#define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1))
+
+#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
+
+#ifndef N_DATADDR
+#define N_DATADDR(x) \
+    (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \
+     : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
+#endif
+
+/* Address of bss segment in memory after it is loaded.  */
+#if !defined (N_BSSADDR)
+#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
+#endif
+
+#if !defined (N_NLIST_DECLARED)
+struct nlist {
+  union {
+    char *n_name;
+    struct nlist *n_next;
+    long n_strx;
+  } n_un;
+  unsigned char n_type;
+  char n_other;
+  short n_desc;
+  unsigned long n_value;
+};
+#endif /* no N_NLIST_DECLARED.  */
+
+#if !defined (N_UNDF)
+#define N_UNDF 0
+#endif
+#if !defined (N_ABS)
+#define N_ABS 2
+#endif
+#if !defined (N_TEXT)
+#define N_TEXT 4
+#endif
+#if !defined (N_DATA)
+#define N_DATA 6
+#endif
+#if !defined (N_BSS)
+#define N_BSS 8
+#endif
+#if !defined (N_COMM)
+#define N_COMM 18
+#endif
+#if !defined (N_FN)
+#define N_FN 15
+#endif
+
+#if !defined (N_EXT)
+#define N_EXT 1
+#endif
+#if !defined (N_TYPE)
+#define N_TYPE 036
+#endif
+#if !defined (N_STAB)
+#define N_STAB 0340
+#endif
+
+/* The following type indicates the definition of a symbol as being
+   an indirect reference to another symbol.  The other symbol
+   appears as an undefined reference, immediately following this symbol.
+
+   Indirection is asymmetrical.  The other symbol's value will be used
+   to satisfy requests for the indirect symbol, but not vice versa.
+   If the other symbol does not have a definition, libraries will
+   be searched to find a definition.  */
+#define N_INDR 0xa
+
+/* The following symbols refer to set elements.
+   All the N_SET[ATDB] symbols with the same name form one set.
+   Space is allocated for the set in the text section, and each set
+   element's value is stored into one word of the space.
+   The first word of the space is the length of the set (number of elements).
+
+   The address of the set is made into an N_SETV symbol
+   whose name is the same as the name of the set.
+   This symbol acts like a N_DATA global symbol
+   in that it can satisfy undefined external references.  */
+
+/* These appear as input to LD, in a .o file.  */
+#define	N_SETA	0x14		/* Absolute set element symbol */
+#define	N_SETT	0x16		/* Text set element symbol */
+#define	N_SETD	0x18		/* Data set element symbol */
+#define	N_SETB	0x1A		/* Bss set element symbol */
+
+/* This is output from LD.  */
+#define N_SETV	0x1C		/* Pointer to set vector in data area.  */
+
+#if !defined (N_RELOCATION_INFO_DECLARED)
+/* This structure describes a single relocation to be performed.
+   The text-relocation section of the file is a vector of these structures,
+   all of which apply to the text section.
+   Likewise, the data-relocation section applies to the data section.  */
+
+struct relocation_info
+{
+  /* Address (within segment) to be relocated.  */
+  int r_address;
+  /* The meaning of r_symbolnum depends on r_extern.  */
+  unsigned int r_symbolnum:24;
+  /* Nonzero means value is a pc-relative offset
+     and it should be relocated for changes in its own address
+     as well as for changes in the symbol or section specified.  */
+  unsigned int r_pcrel:1;
+  /* Length (as exponent of 2) of the field to be relocated.
+     Thus, a value of 2 indicates 1<<2 bytes.  */
+  unsigned int r_length:2;
+  /* 1 => relocate with value of symbol.
+          r_symbolnum is the index of the symbol
+	  in file's the symbol table.
+     0 => relocate with the address of a segment.
+          r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS
+	  (the N_EXT bit may be set also, but signifies nothing).  */
+  unsigned int r_extern:1;
+  /* Four bits that aren't used, but when writing an object file
+     it is desirable to clear them.  */
+  unsigned int r_pad:4;
+};
+#endif /* no N_RELOCATION_INFO_DECLARED.  */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* __A_OUT_GNU_H__ */