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<a.out.h>, MINIX style: remove as obsolete

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Change-Id: Icc8b7210d60a93ac9cc4610d676dcba270756410
This commit is contained in:
Antoine Leca
2013-04-04 12:21:23 +02:00
committed by Gerrit Code Review
parent 14f89a8efe
commit da82f9b2e8
22 changed files with 6 additions and 261 deletions
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1
lib/libcompat_minix/include/Makefile.inc
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@@ -3,6 +3,5 @@
INCSDIR= /usr/include
INCS+= configfile.h
INCS+= compat/a.out.h
INCS+= net/gen/netdb.h net/gen/resolv.h net/gen/nameser.h
INCS+= sys/jmp_buf.h ${MACHINE}/compat_jmp_buf.h

113
lib/libcompat_minix/include/compat/a.out.h
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@@ -1,113 +0,0 @@
/* 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 */
int nlist(char *_file, struct nlist *_nl);
#endif /* _AOUT_H */

2
lib/libexec/Makefile
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@@ -5,7 +5,7 @@ NOGCCERROR:= yes
LIB= exec
INCS= libexec.h
SRCS= exec_aout.c exec_elf.c exec_general.c
SRCS= exec_elf.c exec_general.c
INCSDIR= /usr/include

83
lib/libexec/exec_aout.c
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@@ -1,83 +0,0 @@
#define _SYSTEM 1
#include <minix/type.h>
#include <minix/const.h>
#include <a.out.h>
#include <assert.h>
#include <unistd.h>
#include <errno.h>
#include <libexec.h>
int read_header_aout(
const char *exec_hdr, /* executable header */
size_t exec_len, /* executable file size */
int *sep_id, /* true iff sep I&D */
vir_bytes *text_bytes, /* place to return text size */
vir_bytes *data_bytes, /* place to return initialized data size */
vir_bytes *bss_bytes, /* place to return bss size */
phys_bytes *tot_bytes, /* place to return total size */
vir_bytes *pc, /* program entry point (initial PC) */
int *hdrlenp
)
{
/* Read the header and extract the text, data, bss and total sizes from it. */
struct exec *hdr; /* a.out header is read in here */
/* Read the header and check the magic number. The standard MINIX header
* is defined in <a.out.h>. It consists of 8 chars followed by 6 longs.
* Then come 4 more longs that are not used here.
* Byte 0: magic number 0x01
* Byte 1: magic number 0x03
* Byte 2: normal = 0x10 (not checked, 0 is OK), separate I/D = 0x20
* Byte 3: CPU type, Intel 16 bit = 0x04, Intel 32 bit = 0x10,
* Motorola = 0x0B, Sun SPARC = 0x17
* Byte 4: Header length = 0x20
* Bytes 5-7 are not used.
*
* Now come the 6 longs
* Bytes 8-11: size of text segments in bytes
* Bytes 12-15: size of initialized data segment in bytes
* Bytes 16-19: size of bss in bytes
* Bytes 20-23: program entry point
* Bytes 24-27: total memory allocated to program (text, data + stack)
* Bytes 28-31: size of symbol table in bytes
* The longs are represented in a machine dependent order,
* little-endian on the 8088, big-endian on the 68000.
* The header is followed directly by the text and data segments, and the
* symbol table (if any). The sizes are given in the header. Only the
* text and data segments are copied into memory by exec. The header is
* used here only. The symbol table is for the benefit of a debugger and
* is ignored here.
*/
assert(exec_hdr != NULL);
hdr = (struct exec *)exec_hdr;
if (exec_len < A_MINHDR) return(ENOEXEC);
/* Check magic number, cpu type, and flags. */
if (BADMAG(*hdr)) return(ENOEXEC);
#if defined(__i386__)
if (hdr->a_cpu != A_I80386) return(ENOEXEC);
#endif
if ((hdr->a_flags & ~(A_NSYM | A_EXEC | A_SEP)) != 0) return(ENOEXEC);
*sep_id = !!(hdr->a_flags & A_SEP); /* separate I & D or not */
/* Get text and data sizes. */
*text_bytes = (vir_bytes) hdr->a_text; /* text size in bytes */
*data_bytes = (vir_bytes) hdr->a_data; /* data size in bytes */
*bss_bytes = (vir_bytes) hdr->a_bss; /* bss size in bytes */
*tot_bytes = hdr->a_total; /* total bytes to allocate for prog */
if (*tot_bytes == 0) return(ENOEXEC);
if (!*sep_id) {
/* If I & D space is not separated, it is all considered data. Text=0*/
*data_bytes += *text_bytes;
*text_bytes = 0;
}
*pc = hdr->a_entry; /* initial address to start execution */
*hdrlenp = hdr->a_hdrlen & BYTE; /* header length */
return(OK);
}