Cody Boone Ferguson
00e0bcc105
This included adding the 'a.out.h' as not all systems have it and also I wanted it as close to the original as possible so I got a copy (https://raw.githubusercontent.com/dspinellis/unix-history-repo/Research-Release/usr/include/a.out.h) from the fabulous Unix History repo (https://github.com/dspinellis/unix-history-repo) which I highly recommend anyone interested in the evolution of Unix to check out! ... and yes: the repo is under the account of Diomidis Spinellis who is a previous IOCCC winner! To generate the tool run `make gentab'. Note that keeping the short ints short generates a lot of negative numbers but this might or might not be a problem: the original mullender.c has a negative number for instance. Updated .gitignore and README.md files.
34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
struct exec { /* a.out header */
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int a_magic; /* magic number */
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unsigned a_text; /* size of text segment */
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unsigned a_data; /* size of initialized data */
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unsigned a_bss; /* size of unitialized data */
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unsigned a_syms; /* size of symbol table */
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unsigned a_entry; /* entry point */
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unsigned a_unused; /* not used */
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unsigned a_flag; /* relocation info stripped */
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};
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#define A_MAGIC1 0407 /* normal */
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#define A_MAGIC2 0410 /* read-only text */
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#define A_MAGIC3 0411 /* separated I&D */
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#define A_MAGIC4 0405 /* overlay */
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struct nlist { /* symbol table entry */
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char n_name[8]; /* symbol name */
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int n_type; /* type flag */
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unsigned n_value; /* value */
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};
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/* values for type flag */
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#define N_UNDF 0 /* undefined */
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#define N_ABS 01 /* absolute */
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#define N_TEXT 02 /* text symbol */
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#define N_DATA 03 /* data symbol */
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#define N_BSS 04 /* bss symbol */
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#define N_TYPE 037
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#define N_REG 024 /* register name */
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#define N_FN 037 /* file name symbol */
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#define N_EXT 040 /* external bit, or'ed in */
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#define FORMAT "%06o" /* to print a value */
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