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aout68k.h revision 1.1 
      1 /*
      2  *	a.out file structure definitions
      3  *
      4  *	written by Yasha (ITOH Yasufumi)
      5  *	public domain
      6  *
      7  *	$NetBSD: aout68k.h,v 1.1 1998/09/01 19:51:08 itohy Exp $
      8  */
      9 /*
     10  * NetBSD/m68k a.out format (OMAGIC, NMAGIC)
     11  *
     12  *	----------------------------
     13  *	|  file header (32 bytes)  |
     14  *	|--------------------------|
     15  *	|  text                    |
     16  *	|--------------------------|
     17  *	|  data                    |
     18  *	|--------------------------|
     19  *	|  text relocation table   |
     20  *	|--------------------------|
     21  *	|  data relocation table   |
     22  *	|--------------------------|
     23  *	|  symbol table            |
     24  *	|--------------------------|
     25  *	|  string table            |
     26  *	----------------------------
     27  *
     28  * OMAGIC: text and data segments are loaded contiguous
     29  * NMAGIC: data segment is loaded at the next page of the text
     30  */
     31 
     32 struct aout_m68k {
     33 	be_uint32_t	a_magic;	/* encoded magic number */
     34 	be_uint32_t	a_text;		/* size of text section */
     35 	be_uint32_t	a_data;		/* size of data section */
     36 	be_uint32_t	a_bss;		/* size of bss */
     37 	be_uint32_t	a_syms;		/* size of symbol table */
     38 	be_uint32_t	a_entry;	/* entry point address */
     39 	be_uint32_t	a_trsize;	/* size of text relocation */
     40 	be_uint32_t	a_drsize;	/* size of data relocation */
     41 };
     42 
     43 #define AOUT_GET_MAGIC(e)	(((e)->a_magic.val[2]<<8) | (e)->a_magic.val[3])
     44 #define	AOUT_OMAGIC	0407
     45 #define	AOUT_NMAGIC	0410
     46 #define	AOUT_ZMAGIC	0413	/* demand paging --- header is in the text */
     47 
     48 #define AOUT_GET_FLAGS(e)	((e)->a_magic.val[0] >> 2)
     49 #define AOUT_FLAG_PIC		0x10
     50 #define AOUT_FLAG_DYNAMIC	0x20
     51 
     52 /* machine ID */
     53 #define AOUT_GET_MID(e)		((((e)->a_magic.val[0] & 0x03) << 8) |	\
     54 					(e)->a_magic.val[1])
     55 #define	AOUT_MID_M68K	135	/* m68k BSD binary, 8KB page */
     56 #define	AOUT_MID_M68K4K	136	/* m68k BSD binary, 4KB page */
     57 
     58 #define AOUT_PAGESIZE(e)	(AOUT_GET_MAGIC(e) == AOUT_OMAGIC ? 1 :	\
     59 				AOUT_GET_MID(e) == AOUT_MID_M68K ? 8192 : 4096)
     60