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ba5bfe42 | 1 | /* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. |
a6353123 RM |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
16 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
17 | Cambridge, MA 02139, USA. */ | |
18 | ||
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19 | #include <setjmp.h> |
20 | #include <stdlib.h> | |
21 | ||
22 | /* Jump to the position specified by ENV, causing the | |
23 | setjmp call there to return VAL, or 1 if VAL is 0. */ | |
a6353123 | 24 | void |
6b319336 | 25 | __longjmp (__jmp_buf env, int val) |
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26 | { |
27 | /* This restores the FP and SP that setjmp's caller had, | |
28 | and puts the return address into A0 and VAL into D0. */ | |
29 | ||
30 | #if defined(__HAVE_68881__) || defined(__HAVE_FPU__) | |
31 | /* Restore the floating-point registers. */ | |
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32 | asm volatile("fmovem%.x %0, %/fp0-%/fp7" : |
33 | /* No outputs. */ : "g" (env[0].__fpregs[0])); | |
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34 | #endif |
35 | ||
36 | /* Put VAL in D0. */ | |
69c85398 | 37 | asm volatile("move%.l %0, %/d0" : /* No outputs. */ : |
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38 | "g" (val == 0 ? 1 : val) : "d0"); |
39 | ||
40 | asm volatile(/* Restore the data and address registers. */ | |
69c85398 | 41 | "movem%.l %0, %/d1-%/d7/%/a0-%/a7\n" |
a6353123 | 42 | /* Return to setjmp's caller. */ |
e982f638 | 43 | #ifdef __motorola__ |
69c85398 | 44 | "jmp (%/a0)" |
e982f638 | 45 | #else |
69c85398 | 46 | "jmp %/a0@" |
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47 | #endif |
48 | : /* No outputs. */ : "g" (env[0].__dregs[0]) | |
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49 | /* We don't bother with the clobbers, |
50 | because this code always jumps out anyway. */ | |
51 | ); | |
52 | ||
53 | /* This call avoids `volatile function does return' warnings. */ | |
54 | abort (); | |
55 | } |