2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
119 lines
4 KiB
C
119 lines
4 KiB
C
/* 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_IMG 0x08 /* image instead of executable (e.g. root FS) */
|
|
#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_type 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 _MINIX_ANSI_H
|
|
#include <minix/ansi.h>
|
|
#endif
|
|
|
|
_PROTOTYPE( int nlist, (char *_file, struct nlist *_nl) );
|
|
|
|
#endif /* _AOUT_H */
|