lib/libc/arch/powerpc64/SYS.h

   1 /*      $NetBSD: SYS.h,v 1.2 2010/03/22 02:17:23 mrg Exp $      */
   2
   3 #include <machine/asm.h>
   4 #include <sys/syscall.h>
   5
   6 #ifdef __STDC__
   7 #define _DOSYSCALL(x)           li      %r0,(SYS_ ## x)         ;\
   8                                 sc
   9 #else
  10 #define _DOSYSCALL(x)           li      %r0,(SYS_/**/x)         ;\
  11                                 sc
  12 #endif /* __STDC__ */
  13
  14 #define _SYSCALL_NOERROR(x,y)   .text                           ;\
  15                                 .align  2                       ;\
  16                         ENTRY(x)                                ;\
  17                                 _DOSYSCALL(y)
  18
  19 #define _SYSCALL(x,y)           .text                           ;\
  20                                 .align  2                       ;\
  21                         2:      b       PIC_PLT(_C_LABEL(__cerror));\
  22                                 nop                             ;\
  23                                 _SYSCALL_NOERROR(x,y)           ;\
  24                                 bso     2b
  25
  26 #define SYSCALL_NOERROR(x)      _SYSCALL_NOERROR(x,x)
  27
  28 #define SYSCALL(x)              _SYSCALL(x,x)
  29
  30 #define PSEUDO_NOERROR(x,y)     _SYSCALL_NOERROR(x,y)           ;\
  31                                 blr
  32
  33 #define PSEUDO(x,y)             _SYSCALL_NOERROR(x,y)           ;\
  34                                 bnslr                           ;\
  35                                 b       PIC_PLT(_C_LABEL(__cerror));\
  36                                 nop
  37
  38 #define RSYSCALL_NOERROR(x)     PSEUDO_NOERROR(x,x)
  39
  40 #define RSYSCALL(x)             PSEUDO(x,x)
  41
  42 #define WSYSCALL(weak,strong)   WEAK_ALIAS(weak,strong)         ;\
  43                                 PSEUDO(strong,weak)