c3-lang/libbsd/include/bsd/nlist.h

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• Hash : e8d340de
  Author :
  Date : 2017-06-05T05:30:27
  

  Remove a.out support from nlist() Some libc libraries do not have an <a.out.h> header. And a.out as an executable format is very much obsolete on pretty much all currently supported systems, even if they might still support loading such objects. Remove the a.out support to increase portability.

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• include/bsd/nlist.h

• /*
   * Copyright © 2009 Guillem Jover <guillem@hadrons.org>
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
   * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
   * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef LIBBSD_NLIST_H
  #define LIBBSD_NLIST_H
  
  #include <sys/cdefs.h>
  
  struct nlist {
  	union {
  		char *n_name;
  		struct n_list *n_next;
  		long n_strx;
  	} n_un;
  	unsigned char n_type;
  	char n_other;
  	short n_desc;
  	unsigned long n_value;
  };
  
  #define n_hash	n_desc		/* used internally by ld(1); XXX */
  
  /*
   * Defines for n_type.
   */
  #define N_UNDF	0x00		/* Undefined */
  #define N_ABS	0x02		/* Absolute address */
  #define N_TEXT	0x04		/* Text segment */
  #define N_DATA	0x06		/* Data segment */
  #define N_BSS	0x08		/* Bss segment */
  #define N_INDR	0x0a		/* Alias definition */
  #define N_SIZE	0x0c		/* Pseudo type, defines a symbol's size */
  #define N_COMM	0x12		/* Common reference */
  /* GNU extensions */
  #define N_SETA	0x14		/* Absolute set element symbol */
  #define N_SETT	0x16		/* Text set element symbol */
  #define N_SETD	0x18		/* Data set element symbol */
  #define N_SETB	0x1a		/* Bss set element symbol */
  #define N_SETV	0x1c		/* Set vector symbol */
  /* end GNU extensions */
  #define N_FN	0x1e		/* File name (N_EXT on) */
  #define N_WARN	0x1e		/* Warning message (N_EXT off) */
  
  #define N_EXT	0x01		/* External (global) bit, OR'ed in */
  #define N_TYPE	0x1e		/* Mask for all the type bits */
  #define N_STAB	0xe0		/* Mask for debugger symbols -- stab(5) */
  
  #define N_NAME(p)	((p)->n_un.n_name)
  
  /*
   * Defines for n_other.  It contains the ".type" (AUX) field in the least
   * significant 4 bits, and the binding (for weak symbols) in the most
   * significant 4 bits.
   */
  #define N_AUX(p)	((p)->n_other & 0xf)
  #define N_BIND(p)	(((unsigned int)(p)->n_other >> 4) & 0xf)
  #define N_OTHER(r, v)	(((unsigned int)(r) << 4) | ((v) & 0xf))
  
  #define AUX_OBJECT	1	/* Data object */
  #define AUX_FUNC	2	/* Function */
  
  /*#define BIND_LOCAL	0	Not used */
  /*#define BIND_GLOBAL	1	Not used */
  #define BIND_WEAK	2	/* Weak binding */
  
  #define N_FORMAT	"%08x"	/* namelist value format; XXX */
  
  __BEGIN_DECLS
  extern int nlist(const char *filename, struct nlist *list);
  __END_DECLS
  
  #endif
  

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