1*2fe8fb19SBen Gras/* $NetBSD: __setjmp14.S,v 1.5 2011/01/15 07:31:12 matt Exp $ */ 2*2fe8fb19SBen Gras 3*2fe8fb19SBen Gras#include "SYS.h" 4*2fe8fb19SBen Gras#include "assym.h" 5*2fe8fb19SBen Gras 6*2fe8fb19SBen Gras#if defined(LIBC_SCCS) 7*2fe8fb19SBen Gras__RCSID("$NetBSD: __setjmp14.S,v 1.5 2011/01/15 07:31:12 matt Exp $") 8*2fe8fb19SBen Gras#endif 9*2fe8fb19SBen Gras 10*2fe8fb19SBen Gras/* 11*2fe8fb19SBen Gras * C library -- _setjmp, _longjmp 12*2fe8fb19SBen Gras * 13*2fe8fb19SBen Gras * longjmp(a,v) 14*2fe8fb19SBen Gras * will generate a "return(v?v:1)" from the last call to 15*2fe8fb19SBen Gras * setjmp(a) 16*2fe8fb19SBen Gras * by restoring registers from the stack. 17*2fe8fb19SBen Gras * The previous signal state is restored. 18*2fe8fb19SBen Gras */ 19*2fe8fb19SBen Gras 20*2fe8fb19SBen GrasENTRY(__setjmp14) 21*2fe8fb19SBen Gras mr %r6,%r3 22*2fe8fb19SBen Gras li %r3,SIG_BLOCK 23*2fe8fb19SBen Gras li %r4,0 24*2fe8fb19SBen Gras addi %r5,%r6,4*(1+24) # &sigmask 25*2fe8fb19SBen Gras _DOSYSCALL(__sigprocmask14) # assume no error XXX 26*2fe8fb19SBen Gras mflr %r11 27*2fe8fb19SBen Gras mfcr %r12 28*2fe8fb19SBen Gras mr %r10,%r1 29*2fe8fb19SBen Gras mr %r9,%r2 30*2fe8fb19SBen Gras stmw %r8,4(%r6) # save r8-r31 31*2fe8fb19SBen Gras li %r3,0 32*2fe8fb19SBen Gras blr 33*2fe8fb19SBen GrasEND(__setjmp14) 34*2fe8fb19SBen Gras 35*2fe8fb19SBen GrasENTRY(__longjmp14) 36*2fe8fb19SBen Gras lmw %r8,4(%r3) # load r8-r31 37*2fe8fb19SBen Gras mr %r6,%r4 38*2fe8fb19SBen Gras mtlr %r11 39*2fe8fb19SBen Gras mtcr %r12 40*2fe8fb19SBen Gras mr %r2,%r9 41*2fe8fb19SBen Gras mr %r1,%r10 42*2fe8fb19SBen Gras addi %r4,%r3,4*(1+24) # &sigmask 43*2fe8fb19SBen Gras li %r3,SIG_SETMASK 44*2fe8fb19SBen Gras li %r5,0 45*2fe8fb19SBen Gras _DOSYSCALL(__sigprocmask14) # assume no error XXX 46*2fe8fb19SBen Gras or. %r3,%r6,%r6 47*2fe8fb19SBen Gras bnelr 48*2fe8fb19SBen Gras li %r3,1 49*2fe8fb19SBen Gras blr 50*2fe8fb19SBen GrasEND(__longjmp14) 51