1*2fe8fb19SBen Gras/* $NetBSD: compat_setjmp.S,v 1.2 2011/01/15 07:31:13 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: compat_setjmp.S,v 1.2 2011/01/15 07:31:13 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(setjmp) 21*2fe8fb19SBen Gras mr %r6,%r3 22*2fe8fb19SBen Gras li %r3,SIG_BLOCK 23*2fe8fb19SBen Gras li %r4,0 24*2fe8fb19SBen Gras _DOSYSCALL(compat_13_sigprocmask13) # assume no error XXX 25*2fe8fb19SBen Gras mflr %r11 26*2fe8fb19SBen Gras mfcr %r12 27*2fe8fb19SBen Gras mr %r10,%r1 28*2fe8fb19SBen Gras mr %r9,%r2 29*2fe8fb19SBen Gras mr %r8,%r3 30*2fe8fb19SBen Gras stmw %r8,4(%r6) 31*2fe8fb19SBen Gras li %r3,0 32*2fe8fb19SBen Gras blr 33*2fe8fb19SBen GrasEND(setjmp) 34*2fe8fb19SBen Gras 35*2fe8fb19SBen GrasENTRY(longjmp) 36*2fe8fb19SBen Gras lmw %r8,4(%r3) 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 mr %r4,%r8 43*2fe8fb19SBen Gras li %r3,SIG_SETMASK 44*2fe8fb19SBen Gras _DOSYSCALL(compat_13_sigprocmask13) # assume no error XXX 45*2fe8fb19SBen Gras or. %r3,%r6,%r6 46*2fe8fb19SBen Gras bnelr 47*2fe8fb19SBen Gras li %r3,1 48*2fe8fb19SBen Gras blr 49*2fe8fb19SBen GrasEND(longjmp) 50