code.delx.au - gnu-emacs/blob - src/m/sun3.h

   1 /* machine description file for Sun 68000's OPERATING SYSTEM version 3
   2    (for either 68000 or 68020 systems).  */
   3
   4 #include "sun2.h"
   5 #undef sun2
   6 #ifndef sun3
   7 #define sun3
   8 #endif
   9
  10 /* The following line tells the configuration script what sort of
  11    operating system this machine is likely to run.
  12    USUAL-OPSYS="note"
  13
  14 NOTE-START
  15 Sun 1, 2 and 3 (-machine=sun1, -machine=sun2, -machine=sun3;
  16                 -opsystem=bsd4-2 or -opsystem=sunos4)
  17
  18   Whether you should use sun1, sun2 or sun3 depends on the
  19                    VERSION OF THE OPERATING SYSTEM
  20   you have.  There are three machine types for different versions of
  21   SunOS.  All are derived from Berkeley 4.2, meaning that you should
  22   use -opsystem=bsd4-2.  Emacs 17 has run on all of them.  You will
  23   need to use sun3 on Sun 2's running SunOS release 3.
  24
  25   For SunOS release 4 on a Sun 3, use -machine=sun3 and
  26   -opsystem=sunos4.  See the file share-lib/SUNBUG for how to solve
  27   problems caused by bugs in the "export" version of SunOS 4.
  28 NOTE-END  */
  29
  30 /* Say that the text segment of a.out includes the header;
  31    the header actually occupies the first few bytes of the text segment
  32    and is counted in hdr.a_text.  */
  33
  34 #define A_TEXT_OFFSET(HDR) sizeof (HDR)
  35
  36 /* This is the offset of the executable's text, from the start of the file.  */
  37
  38 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
  39
  40 /* In case we are using floating point, work together with crt0.c.  */
  41
  42 #ifndef __GNUC__
  43 #define C_SWITCH_MACHINE -fsoft
  44 #endif
  45
  46 /* This line is needed if you are linking with X windows
  47    and the library xlib was compiled to use the 68881.
  48    For maximum cleanliness, don't edit this file;
  49    instead, insert this line in config.h.  */
  50 /* #define START_FILES crt0.o /usr/lib/Mcrt1.o  */