/*      $NetBSD: SYS.h,v 1.13 2014/08/23 02:24:22 matt Exp $    */

#include <machine/asm.h>
#include <sys/syscall.h>

#define BRANCH_TO_CERROR()      b       _C_LABEL(__cerror)

#define _DOSYSCALL(x)           li      %r0,(SYS_ ## x)         ;\
                                sc

#define _SYSCALL_NOERROR(x,y)   .text                           ;\
                                .p2align 2                      ;\
                        ENTRY(x)                                ;\
                                _DOSYSCALL(y)

#define _SYSCALL(x,y)           .text                           ;\
                                .p2align 2                      ;\
                        2:      BRANCH_TO_CERROR()              ;\
                                _SYSCALL_NOERROR(x,y)           ;\
                                bso     2b

#define SYSCALL_NOERROR(x)      _SYSCALL_NOERROR(x,x)

#define SYSCALL(x)              _SYSCALL(x,x)

#define PSEUDO_NOERROR(x,y)     _SYSCALL_NOERROR(x,y)           ;\
                                blr                             ;\
                                END(x)

#define PSEUDO(x,y)             _SYSCALL_NOERROR(x,y)           ;\
                                bnslr                           ;\
                                BRANCH_TO_CERROR()              ;\
                                END(x)

#define RSYSCALL_NOERROR(x)     PSEUDO_NOERROR(x,x)

#define RSYSCALL(x)             PSEUDO(x,x)

#define WSYSCALL(weak,strong)   WEAK_ALIAS(weak,strong)         ;\
                                PSEUDO(strong,weak)