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55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
/* aout.h - parse and load the contents of a UNIX a.out file, for
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* several flavours of PDP-11 UNIX
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*
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* $Revision: 1.4 $
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* $Date: 2000/08/11 07:07:35 $
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*/
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#include <unistd.h>
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#define EIGHT_K 8192
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/* UNIX magic numbers for the a.out header */
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#define V1_NORMAL 0405 /* normal: 1st Edition, six words long */
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#define ANY_NORMAL 0407 /* normal: V5,V6,V7,2.11BSD */
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#define ANY_ROTEXT 0410 /* read-only text: V5,V6,V7,2.11BSD */
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#define ANY_SPLITID 0411 /* seperated I&D: V5,V6,V7,2.11BSD */
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#define BSD_OVERLAY 0430 /* 2.11BSD overlay, non-separate */
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#define BSD_ROVERLAY 0431 /* 2.11BSD overlay, separate */
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#define ANY_SCRIPT 020443 /* Shell script, i.e #! */
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#define A68_MAGIC 0 /* Algol68 binaries have these magic nums */
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#define A68_DATA 0107116 /* Algol68 binaries have these magic nums */
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#define UNKNOWN_AOUT 034567 /* An unknown a.out header */
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/* a.out header for nearly all UNIX flavours */
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struct exec {
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u_int16_t a_magic; /* magic number */
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u_int16_t a_text; /* size of text segment */
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u_int16_t a_data; /* size of initialised data */
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u_int16_t a_bss; /* size of initialised bss */
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u_int16_t a_syms; /* size of symbol table */
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u_int16_t a_entry; /* entry point */
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u_int16_t a_unused; /* unused */
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u_int16_t a_flag; /* relocation info stripped */
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/* 16 bytes up to here */
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/* 2.11BSD overlay files have the following */
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#define NOVL 15
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int16_t max_ovl; /* maximum overlay size */
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u_int16_t ov_siz[NOVL]; /* size of the i'th overlay */
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/* Note that if the file isn't a 2.11BSD */
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/* overlay, we have to rewind to undo */
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/* the read of this section */
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};
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/* Because V5, V6, V7 and 2.11BSD share several magic numbers
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* in their a.out headers, we must distinguish them so as to
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* set up the correct emulated environment. This is done by
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* observing the differences in their crt0.s code: they all
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* differ at position 021
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*/
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#define a_magic2 ov_siz[0]
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#define V2_M2 0177304 /* Doesn't apply to all, tho */
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#define V6_M2 0010600
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#define V7_M2 0016600
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#define BSD_M2 0162706
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