/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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#ifndef __A_OUT_GNU_H__

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#define __A_OUT_GNU_H__

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#define __GNU_EXEC_MACROS__

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#ifndef __STRUCT_EXEC_OVERRIDE__

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#include <asm/a.out.h>

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#endif /* __STRUCT_EXEC_OVERRIDE__ */

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#ifndef __ASSEMBLY__

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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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M_MIPS1 = 151, /* MIPS R3000/R3000 binary */

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M_MIPS2 = 152 /* MIPS R6000/R4000 binary */

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};

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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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/* 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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/* This indicates a demand-paged executable with the header in the text.

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The first page is unmapped to help trap NULL pointer references */

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#define QMAGIC 0314

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/* Code indicating core file. */

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#define CMAGIC 0421

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#if !defined (N_BADMAG)

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#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \

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&& N_MAGIC(x) != NMAGIC \

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&& N_MAGIC(x) != ZMAGIC \

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&& N_MAGIC(x) != QMAGIC)

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#endif

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#define _N_HDROFF(x) (1024 - sizeof (struct exec))

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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) : \

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(N_MAGIC(x) == QMAGIC ? 0 : 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) + N_TRSIZE(x))

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#endif

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#if !defined (N_SYMOFF)

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#define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x))

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#endif

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#if !defined (N_STROFF)

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#define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x))

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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) (N_MAGIC(x) == QMAGIC ? PAGE_SIZE : 0)

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#endif

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/* Address of data segment in memory after it is loaded. */

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#include <unistd.h>

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#if defined(__i386__) || defined(__mc68000__)

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#define SEGMENT_SIZE 1024

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#else

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#ifndef SEGMENT_SIZE

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#define SEGMENT_SIZE getpagesize()

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#endif

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#endif

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#define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE)

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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_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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#endif /*__ASSEMBLY__ */

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#endif /* __A_OUT_GNU_H__ */

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