usr/src/lib/libc/tahoe/sys/sigreturn.s

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that this notice is preserved and that due credit is given
 * to the University of California at Berkeley. The name of the University
 * may not be used to endorse or promote products derived from this
 * software without specific written prior permission. This software
 * is provided ``as is'' without express or implied warranty.
 */

#if defined(SYSLIBC_SCCS) && !defined(lint)
_sccsid:.asciz  "@(#)sigreturn.s        5.2 (Berkeley) %G%"
#endif /* SYSLIBC_SCCS and not lint */

#include "SYS.h"

/*
 * We must preserve the state of the registers as the user has set them up.
 */
#ifdef PROF
#define POPR(r) movl (sp)+,r
#undef ENTRY
#define ENTRY(x) \
        .globl _/**/x; .align 2; _/**/x: .word 0; \
        pushl r0; pushl r1; pushl r2; pushl r3; pushl r4; pushl r5; \
        .data; 1:; .long 0; .text; pushl $1b; callf $8,mcount; \
        POPR(r5); POPR(r4); POPR(r3); POPR(r2); POPR(r1); POPR(r0);
#endif PROF

SYSCALL(sigreturn)
        ret