[binutils.git] / include / a.out.sun4.h

/* SPARC-specific values for a.out files */

#define PAGE_SIZE	0x2000		/* 8K.  aka NBPG in <sys/param.h> */
/* Note that some SPARCs have 4K pages, some 8K, some others.  */

#define SEG_SIZE_SPARC	PAGE_SIZE
#define	SEG_SIZE_SUN3	0x20000		/* Resolution of r/w protection hw */

#define TEXT_START_ADDR	PAGE_SIZE	/* Location 0 is not accessible */

/* Non-default definitions of the accessor macros... */

/* Segment size varies on Sun-3 versus Sun-4.  */

#define N_SEGSIZE(x)	(N_MACHTYPE(x) == M_SPARC?	SEG_SIZE_SPARC:	\
			 N_MACHTYPE(x) == M_68020?	SEG_SIZE_SUN3:	\
			/* Guess? */			PAGE_SIZE)

/* Offset in a.out file of the text section.  For ZMAGIC, the text section
   actually includes the a.out header.  */

#define N_TXTOFF(x)	( (N_MAGIC((x)) == ZMAGIC) ? 0 : EXEC_BYTES_SIZE)

/* Virtual Address of text segment from the a.out file.  For OMAGIC,
   (almost always "unlinked .o's" these days), should be zero.
   Sun added a kludge so that shared libraries linked ZMAGIC get
   an address of zero if a_entry (!!!) is lower than the otherwise
   expected text address.  These kludges have gotta go!
   For linked files, should reflect reality if we know it.  */

#define N_TXTADDR(x) \
    (N_MAGIC(x)==OMAGIC? 0 \
     : (N_MAGIC(x) == ZMAGIC && (x).a_entry < TEXT_START_ADDR)? 0 \
     : TEXT_START_ADDR)
Commit	Line	Data
a07cc613 JG	1	/* SPARC-specific values for a.out files */
a07cc613 JG	2
66d4e1bb	3	#define PAGE_SIZE 0x2000 /* 8K. aka NBPG in <sys/param.h> */
a07cc613	4	/* Note that some SPARCs have 4K pages, some 8K, some others. */
d7f8f106 JG	5
d7f8f106 JG	6	#define SEG_SIZE_SPARC PAGE_SIZE
e10f519d	7	#define SEG_SIZE_SUN3 0x20000 /* Resolution of r/w protection hw */
d7f8f106	8
66d4e1bb	9	#define TEXT_START_ADDR PAGE_SIZE /* Location 0 is not accessible */
a07cc613	10
66d4e1bb	11	/* Non-default definitions of the accessor macros... */
a07cc613	12
d7f8f106 JG	13	/* Segment size varies on Sun-3 versus Sun-4. */
	14
	15	#define N_SEGSIZE(x) (N_MACHTYPE(x) == M_SPARC? SEG_SIZE_SPARC: \
	16	N_MACHTYPE(x) == M_68020? SEG_SIZE_SUN3: \
	17	/* Guess? */ PAGE_SIZE)
	18
66d4e1bb JG	19	/* Offset in a.out file of the text section. For ZMAGIC, the text section
66d4e1bb JG	20	actually includes the a.out header. */
a07cc613	21
19b03b7a	22	#define N_TXTOFF(x) ( (N_MAGIC((x)) == ZMAGIC) ? 0 : EXEC_BYTES_SIZE)
a07cc613	23
66d4e1bb JG	24	/* Virtual Address of text segment from the a.out file. For OMAGIC,
	25	(almost always "unlinked .o's" these days), should be zero.
	26	Sun added a kludge so that shared libraries linked ZMAGIC get
	27	an address of zero if a_entry (!!!) is lower than the otherwise
	28	expected text address. These kludges have gotta go!
	29	For linked files, should reflect reality if we know it. */
	30
	31	#define N_TXTADDR(x) \
	32	(N_MAGIC(x)==OMAGIC? 0 \
	33	: (N_MAGIC(x) == ZMAGIC && (x).a_entry < TEXT_START_ADDR)? 0 \
	34	: TEXT_START_ADDR)