2 * Copyright (c) 1980, 1993
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32 #if defined(LIBC_SCCS) && !defined(lint)
33 /* .asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93" */
34 RCSID("$NetBSD: _setjmp.S,v 1.10 2011/01/25 02:38:15 matt Exp $")
35 #endif /* LIBC_SCCS and not lint */
38 * C library -- _setjmp, _longjmp
41 * will generate a "return(v)" from
44 * by restoring registers from the stack,
45 * The previous signal state is NOT restored.
47 * Even though we don't use sigreturn14, we still store things in a sigcontext
48 * in order to be consistent.
53 movl 12(%fp),12(%r0) # save frame pointer of caller
54 movl 16(%fp),20(%r0) # save pc of caller
55 movl 8(%fp),16(%r0) # save ap of caller
56 clrl %r1 # clear arg count
57 bbc $13,6(%fp),1f # was this a callg?
58 addl3 $1,(%ap),%r1 # get real arg count+1 for calls
59 1: moval 24(%fp)[%r1],8(%r0) # save sp of caller
60 movpsl 24(%r0) # save current psl
61 movw 4(%fp),24(%r0) # save psw of caller
62 movq %r6,44(%r0) # save r6/r7
63 movq %r8,52(%r0) # save r8/r9
64 movq %r10,60(%r0) # save r10/r11
70 movl 8(%ap),%r0 # return(v)
71 movl 4(%ap),%r1 # fetch buffer
72 tstl 12(%r1) # is fp null
74 movq 44(%r1),%r6 # restore r6/r7
75 movq 52(%r1),%r8 # restore r8/r9
76 movq 60(%r1),%r10 # restore r10/r11
77 movl 16(%r1),%ap # restore ap
78 movl 8(%r1),%sp # restore sp
79 movl 12(%r1),%fp # restore fp
80 movq 20(%r1),-(%sp) # save pc/psl to new stack
81 rei # and go back to saved pc/psl
84 calls $0,_C_LABEL(longjmperror)