mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-29 22:11:18 +00:00
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__
|
||
#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__ */
|