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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 | ||
a6353123 RM |
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) |
a6353123 RM |
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. */ | |
32 | asm volatile("fmovem%.x %0, fp0-fp7" : | |
33 | /* No outputs. */ : "g" (env[0].__fpregs[0]) : | |
34 | "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7"); | |
35 | #endif | |
36 | ||
37 | /* Put VAL in D0. */ | |
38 | asm volatile("move%.l %0, d0" : /* No outputs. */ : | |
39 | "g" (val == 0 ? 1 : val) : "d0"); | |
40 | ||
41 | asm volatile(/* Restore the data and address registers. */ | |
42 | "movem%.l %0, d1-d7/a0-a7\n" | |
43 | /* Return to setjmp's caller. */ | |
e982f638 RM |
44 | #ifdef __motorola__ |
45 | "jmp (a0)" | |
46 | #else | |
47 | "jmp a0@" | |
48 | #endif | |
49 | : /* No outputs. */ : "g" (env[0].__dregs[0]) | |
a6353123 RM |
50 | /* We don't bother with the clobbers, |
51 | because this code always jumps out anyway. */ | |
52 | ); | |
53 | ||
54 | /* This call avoids `volatile function does return' warnings. */ | |
55 | abort (); | |
56 | } |