298 lines
8 KiB
C
298 lines
8 KiB
C
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/*
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* MINIX 1.7.x
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* GNU version based on Linux 1.1.45 version
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* if _MINIX_EXEC defined use old MINIX GNU format
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*/
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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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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; /* length of text, in bytes */
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unsigned a_data; /* length of data, in bytes */
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unsigned a_bss; /* length of uninitialized data area for file, in bytes */
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unsigned a_syms; /* length of symbol table data in file, in bytes */
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unsigned a_entry; /* start address */
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unsigned a_trsize; /* length of relocation info for text, in bytes */
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unsigned a_drsize; /* length of relocation info for data, in bytes */
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#ifdef _MINIX_EXEC
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unsigned a_smagic; /* SMAGIC */
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unsigned a_memsize; /* Dynamic Memory Size */
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#endif
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};
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#ifdef _MINIX_EXEC
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#define GNU_SMAGIC 0xdeadbabe
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#define GNU_DYNMEM (64 * 1024)
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#else
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#define GNU_STACK 64 /* Default Stack */
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#endif
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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 (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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#ifdef _MINIX
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#define N_SET_MEMORY(exec, mem) \
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((exec).a_info = \
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((exec).a_info & 0x0000FFFF) | (((mem) & 0xFFFF) << 16))
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#define N_MEMORY(exec) (((exec).a_info >> 16) & 0xFFFF)
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#endif
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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) + (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) (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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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(vax) || defined(hp300) || defined(pyr)
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#define SEGMENT_SIZE page_size
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#endif
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#ifdef sony
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#define SEGMENT_SIZE 0x2000
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#endif /* Sony. */
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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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#define SEGMENT_SIZE PAGE_SIZE
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#endif
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#ifndef PAGE_SIZE
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#define PAGE_SIZE 1024
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#endif
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#ifndef SEGMENT_SIZE
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#define SEGMENT_SIZE PAGE_SIZE
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#endif
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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_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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#ifdef NS32K
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unsigned r_bsr:1;
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unsigned r_disp:1;
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unsigned r_pad:2;
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#else
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unsigned int r_pad:4;
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#endif
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};
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#endif /* no N_RELOCATION_INFO_DECLARED. */
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#endif /* __A_OUT_GNU_H__ */
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