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[/] [or1k/] [tags/] [initial/] [uclinux/] [uC-libc/] [include/] [a.out.h] - Rev 1769
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/* Copyright (C) 1990-1996 * This file is part of the ld86 command for Linux-86 * It is distributed under the GNU Library General Public License. * * - This may actually be BSD or Minix code, can someone clarify please. -RDB */ #ifndef __AOUT_H #define __AOUT_H struct exec { /* a.out header */ unsigned char a_magic[2]; /* magic number */ unsigned char a_flags; /* flags, see below */ unsigned char a_cpu; /* cpu id */ unsigned char a_hdrlen; /* length of header */ unsigned char a_unused; /* reserved for future use */ unsigned short a_version; /* version stamp (not used at present) */ long a_text; /* size of text segement in bytes */ long a_data; /* size of data segment in bytes */ long a_bss; /* size of bss segment in bytes */ long a_entry; /* entry point */ long a_total; /* total memory allocated */ long a_syms; /* size of symbol table */ /* SHORT FORM ENDS HERE */ long a_trsize; /* text relocation size */ long a_drsize; /* data relocation size */ long a_tbase; /* text relocation base */ long a_dbase; /* data relocation base */ }; #define A_MAGIC0 (unsigned char) 0x01 #define A_MAGIC1 (unsigned char) 0x03 #define BADMAG(X) ((X).a_magic[0] != A_MAGIC0 ||(X).a_magic[1] != A_MAGIC1) /* CPU Id of TARGET machine (byte order coded in low order two bits) */ #define A_NONE 0x00 /* unknown */ #define A_I8086 0x04 /* intel i8086/8088 */ #define A_M68K 0x0B /* motorola m68000 */ #define A_NS16K 0x0C /* national semiconductor 16032 */ #define A_I80386 0x10 /* intel i80386 */ #define A_SPARC 0x17 /* Sun SPARC */ #define A_BLR(cputype) ((cputype&0x01)!=0) /* TRUE if bytes left-to-right */ #define A_WLR(cputype) ((cputype&0x02)!=0) /* TRUE if words left-to-right */ /* Flags. */ #define A_UZP 0x01 /* unmapped zero page (pages) */ #define A_PAL 0x02 /* page aligned executable */ #define A_NSYM 0x04 /* new style symbol table */ #define A_EXEC 0x10 /* executable */ #define A_SEP 0x20 /* separate I/D */ #define A_PURE 0x40 /* pure text */ #define A_TOVLY 0x80 /* text overlay */ /* Offsets of various things. */ #define A_MINHDR 32 #define A_TEXTPOS(X) ((long)(X).a_hdrlen) #define A_DATAPOS(X) (A_TEXTPOS(X) + (X).a_text) #define A_HASRELS(X) ((X).a_hdrlen > (unsigned char) A_MINHDR) #define A_HASEXT(X) ((X).a_hdrlen > (unsigned char) (A_MINHDR + 8)) #define A_HASLNS(X) ((X).a_hdrlen > (unsigned char) (A_MINHDR + 16)) #define A_HASTOFF(X) ((X).a_hdrlen > (unsigned char) (A_MINHDR + 24)) #define A_TRELPOS(X) (A_DATAPOS(X) + (X).a_data) #define A_DRELPOS(X) (A_TRELPOS(X) + (X).a_trsize) #define A_SYMPOS(X) (A_TRELPOS(X) + (A_HASRELS(X) ? \ ((X).a_trsize + (X).a_drsize) : 0)) struct reloc { long r_vaddr; /* virtual address of reference */ unsigned short r_symndx; /* internal segnum or extern symbol num */ unsigned short r_type; /* relocation type */ }; /* r_tyep values: */ #define R_ABBS 0 #define R_RELLBYTE 2 #define R_PCRBYTE 3 #define R_RELWORD 4 #define R_PCRWORD 5 #define R_RELLONG 6 #define R_PCRLONG 7 #define R_REL3BYTE 8 #define R_KBRANCHE 9 /* r_symndx for internal segments */ #define S_ABS ((unsigned short)-1) #define S_TEXT ((unsigned short)-2) #define S_DATA ((unsigned short)-3) #define S_BSS ((unsigned short)-4) struct nlist { /* symbol table entry */ char n_name[8]; /* symbol name */ long n_value; /* value */ unsigned char n_sclass; /* storage class */ unsigned char n_numaux; /* number of auxiliary entries (not used) */ unsigned short n_type; /* language base and derived type (not used) */ }; /* Low bits of storage class (section). */ #define N_SECT 07 /* section mask */ #define N_UNDF 00 /* undefined */ #define N_ABS 01 /* absolute */ #define N_TEXT 02 /* text */ #define N_DATA 03 /* data */ #define N_BSS 04 /* bss */ #define N_COMM 05 /* (common) */ /* High bits of storage class. */ #define N_CLASS 0370 /* storage class mask */ #define C_NULL #define C_EXT 0020 /* external symbol */ #define C_STAT 0030 /* static */ #endif /* _AOUT_H */
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