[deliverable/binutils-gdb.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 */
#define N_HEADER_IN_TEXT(x) 1

/* 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)

/* 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+EXEC_BYTES_SIZE)
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 */
8a400a18	10	#define N_HEADER_IN_TEXT(x) 1
a07cc613	11
66d4e1bb	12	/* Non-default definitions of the accessor macros... */
a07cc613	13
d7f8f106 JG	14	/* Segment size varies on Sun-3 versus Sun-4. */
	15
	16	#define N_SEGSIZE(x) (N_MACHTYPE(x) == M_SPARC? SEG_SIZE_SPARC: \
	17	N_MACHTYPE(x) == M_68020? SEG_SIZE_SUN3: \
	18	/* Guess? */ PAGE_SIZE)
	19
66d4e1bb JG	20	/* Virtual Address of text segment from the a.out file. For OMAGIC,
	21	(almost always "unlinked .o's" these days), should be zero.
	22	Sun added a kludge so that shared libraries linked ZMAGIC get
	23	an address of zero if a_entry (!!!) is lower than the otherwise
	24	expected text address. These kludges have gotta go!
	25	For linked files, should reflect reality if we know it. */
	26
	27	#define N_TXTADDR(x) \
	28	(N_MAGIC(x)==OMAGIC? 0 \
	29	: (N_MAGIC(x) == ZMAGIC && (x).a_entry < TEXT_START_ADDR)? 0 \
8a400a18	30	: TEXT_START_ADDR+EXEC_BYTES_SIZE)