2.11BSD#431 - /usr/src/lib/libc/pdp/sys/SYS.h

   1: /*
   2:  * Copyright (c) 1983 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)SYS.h	1.5 (2.11BSD GTE) 1995/05/08
   7:  */
   8: 
   9: #include <syscall.h>
  10: 
  11: .comm   _errno,2
  12: 
  13: #define ENTRY(x)        .globl _/**/x; \
  14:                 _/**/x: \
  15:                         PROFCODE(_/**/x);
  16: 
  17: #define ASENTRY(x)      .globl x; \
  18:                 x: \
  19:                         PROFCODE(x);
  20: 
  21: #ifdef PROF
  22: #define PROFCODE(x)     .data; \
  23:                 1:      x+1; \
  24:                         .text; \
  25:                         .globl  mcount; \
  26:                         mov     $1b, r0; \
  27:                         jsr     pc,mcount;
  28: #else !PROF
  29: #define PROFCODE(x)     ;
  30: #endif PROF
  31: 
  32: #define SYS(s)          sys     SYS_/**/s.
  33: 
  34: #define SYSCALL(s, r)   ENTRY(s); \
  35:                         SYS(s); \
  36:                         EXIT_/**/r
  37: 
  38:                 .globl  x_norm, x_error
  39: 
  40: #define EXIT_norm               jmp     x_norm
  41: 
  42: #define EXIT_long               bcc     1f; \
  43:                                 mov     r0,_errno; \
  44:                                 mov     $-1,r1; \
  45:                                 sxt     r0; \
  46:                                 1: rts  pc;
  47: 
  48: #define EXIT_error              jmp     x_error
  49: 
  50: #define EXIT_noerror            rts     pc;

Defined variables

Defined macros

Usage of this include