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author | Robert de Bath <rdebath@poboxes.com> | 1996-03-24 17:45:55 +0100 |
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committer | Lubomir Rintel <lkundrak@v3.sk> | 2013-10-23 23:29:43 +0200 |
commit | fe22c37817ce338fbbc90b239320248c270957fa (patch) | |
tree | d9550410c4a20bdd382fcc58d2d3d7c5e04e5245 /dis88/old_a.out.h | |
parent | a7aba15e8efffb1c5d3097656f1a93955a64f01f (diff) | |
parent | 42192453ea219b80d0bf9f41e51e36d3d4d0740b (diff) | |
download | dev86-fe22c37817ce338fbbc90b239320248c270957fa.tar.gz |
Import Dev86-0.0.4.tar.gzv0.0.4
Diffstat (limited to 'dis88/old_a.out.h')
-rw-r--r-- | dis88/old_a.out.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/dis88/old_a.out.h b/dis88/old_a.out.h new file mode 100644 index 0000000..1a36dfb --- /dev/null +++ b/dis88/old_a.out.h @@ -0,0 +1,117 @@ +/* The <a.out> header file describes the format of executable files. */ + +#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 */ /* not used */ +#define A_TOVLY 0x80 /* text overlay */ /* not used */ + +/* 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 */ + +/* Function prototypes. */ +#ifndef _ANSI_H +#include "ansi.h" +#endif + +_PROTOTYPE( int nlist, (char *_file, struct nlist *_nl) ); + +#endif /* _AOUT_H */ |