297 lines
8 KiB
C
297 lines
8 KiB
C
/*
|
||
* MINIX 1.7.x
|
||
* GNU version based on Linux 1.1.45 version
|
||
* if _MINIX_EXEC defined use old MINIX GNU format
|
||
*/
|
||
|
||
#ifndef __A_OUT_GNU_H__
|
||
#define __A_OUT_GNU_H__
|
||
|
||
#define __GNU_EXEC_MACROS__
|
||
|
||
#ifndef __STRUCT_EXEC_OVERRIDE__
|
||
|
||
struct exec
|
||
{
|
||
unsigned long a_info; /* Use macros N_MAGIC, etc for access */
|
||
unsigned a_text; /* length of text, in bytes */
|
||
unsigned a_data; /* length of data, in bytes */
|
||
unsigned a_bss; /* length of uninitialized data area for file, in bytes */
|
||
unsigned a_syms; /* length of symbol table data in file, in bytes */
|
||
unsigned a_entry; /* start address */
|
||
unsigned a_trsize; /* length of relocation info for text, in bytes */
|
||
unsigned a_drsize; /* length of relocation info for data, in bytes */
|
||
#ifdef _MINIX_EXEC
|
||
unsigned a_smagic; /* SMAGIC */
|
||
unsigned a_memsize; /* Dynamic Memory Size */
|
||
#endif
|
||
};
|
||
|
||
#ifdef _MINIX_EXEC
|
||
#define GNU_SMAGIC 0xdeadbabe
|
||
#define GNU_DYNMEM (64 * 1024)
|
||
#else
|
||
#define GNU_STACK 64 /* Default Stack */
|
||
#endif
|
||
|
||
#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 (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))
|
||
|
||
#ifdef _MINIX
|
||
#define N_SET_MEMORY(exec, mem) \
|
||
((exec).a_info = \
|
||
((exec).a_info & 0x0000FFFF) | (((mem) & 0xFFFF) << 16))
|
||
#define N_MEMORY(exec) (((exec).a_info >> 16) & 0xFFFF)
|
||
#endif
|
||
|
||
/* 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
|
||
/* This indicates a demand-paged executable with the header in the text.
|
||
The first page is unmapped to help trap NULL pointer references */
|
||
#define QMAGIC 0314
|
||
|
||
/* Code indicating core file. */
|
||
#define CMAGIC 0421
|
||
|
||
#if !defined (N_BADMAG)
|
||
#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \
|
||
&& N_MAGIC(x) != NMAGIC \
|
||
&& N_MAGIC(x) != ZMAGIC \
|
||
&& N_MAGIC(x) != QMAGIC)
|
||
#endif
|
||
|
||
#define _N_HDROFF(x) (1024 - sizeof (struct exec))
|
||
|
||
#if !defined (N_TXTOFF)
|
||
#define N_TXTOFF(x) \
|
||
(N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
|
||
(N_MAGIC(x) == QMAGIC ? 0 : 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) (N_MAGIC(x) == QMAGIC ? PAGE_SIZE : 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(vax) || defined(hp300) || defined(pyr)
|
||
#define SEGMENT_SIZE page_size
|
||
#endif
|
||
#ifdef sony
|
||
#define SEGMENT_SIZE 0x2000
|
||
#endif /* Sony. */
|
||
#ifdef is68k
|
||
#define SEGMENT_SIZE 0x20000
|
||
#endif
|
||
#if defined(m68k) && defined(PORTAR)
|
||
#define PAGE_SIZE 0x400
|
||
#define SEGMENT_SIZE PAGE_SIZE
|
||
#endif
|
||
|
||
#ifndef PAGE_SIZE
|
||
#define PAGE_SIZE 1024
|
||
#endif
|
||
|
||
#ifndef SEGMENT_SIZE
|
||
#define SEGMENT_SIZE PAGE_SIZE
|
||
#endif
|
||
|
||
#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_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. */
|
||
#ifdef NS32K
|
||
unsigned r_bsr:1;
|
||
unsigned r_disp:1;
|
||
unsigned r_pad:2;
|
||
#else
|
||
unsigned int r_pad:4;
|
||
#endif
|
||
};
|
||
#endif /* no N_RELOCATION_INFO_DECLARED. */
|
||
|
||
|
||
#endif /* __A_OUT_GNU_H__ */
|