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* a.out.gnu.h, a.out.sun4.h: Make SEGMENT_SIZE able to depend 

on the particular a.out being examined.
* a.out.sun4.h:  Define segment sizes for Sun-3's and Sun-4's.
* FIXME:  a.out.gnu.h is almost obsolete.
* FIXME:  a.out.sun4.h should be renamed a.out.sun.h now.
This commit is contained in:
John Gilmore 1991-08-23 08:56:39 +00:00
parent 299eb5f15f
commit d7f8f106b9
3 changed files with 26 additions and 5 deletions
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10
gas/a.out.gnu.h
View File

@ -100,9 +100,15 @@ enum machine_type {
&& N_MAGIC(x) != ZMAGIC)
#endif
/* By default, segment size is constant. But on some machines, it can
be a function of the a.out header (e.g. machine type). */
#ifndef N_SEGSIZE
#define N_SEGSIZE(x) SEGMENT_SIZE
#endif
/* This complexity is for encapsulated COFF support */
#ifndef _N_HDROFF
#define _N_HDROFF(x) (SEGMENT_SIZE - sizeof (struct exec))
#define _N_HDROFF(x) (N_SEGSIZE(x) - sizeof (struct exec))
#endif
#ifndef N_TXTOFF
@ -140,7 +146,7 @@ enum machine_type {
#ifndef N_DATADDR
#define N_DATADDR(x) \
(N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) \
: (SEGMENT_SIZE + ((N_TXTADDR(x)+(x).a_text-1) & ~(SEGMENT_SIZE-1))))
: (N_SEGSIZE(x) + ((N_TXTADDR(x)+(x).a_text-1) & ~(N_SEGSIZE(x)-1))))
#endif
/* Address of bss segment in memory after it is loaded. */

11
include/a.out.sun4.h
View File

@ -2,11 +2,20 @@
#define PAGE_SIZE 0x2000 /* 8K. aka NBPG in <sys/param.h> */
/* Note that some SPARCs have 4K pages, some 8K, some others. */
#define SEGMENT_SIZE PAGE_SIZE
#define SEG_SIZE_SPARC PAGE_SIZE
#define SEG_SIZE_SUN3 0x80000 /* 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. */

10
include/aout64.h
View File

@ -72,7 +72,13 @@ enum machine_type {
((exec).a_info = \
((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
#define _N_HDROFF(x) (SEGMENT_SIZE - EXEC_BYTES_SIZE)
/* By default, segment size is constant. But on some machines, it can
be a function of the a.out header (e.g. machine type). */
#ifndef N_SEGSIZE
#define N_SEGSIZE(x) SEGMENT_SIZE
#endif
#define _N_HDROFF(x) (N_SEGSIZE(x) - EXEC_BYTES_SIZE)
/* address in an a.out of the text section. When demand paged, it's
set up a bit to make nothing at 0, when an object file it's 0.
There's a special hack case when the entry point is < TEXT_START_ADDR
@ -111,7 +117,7 @@ enum machine_type {
#define N_DATADDR(x) \
(N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) \
: (SEGMENT_SIZE + ((N_TXTADDR(x)+(x).a_text-1) & ~(SEGMENT_SIZE-1))))
: (N_SEGSIZE(x) + ((N_TXTADDR(x)+(x).a_text-1) & ~(N_SEGSIZE(x)-1))))
#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)