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f0e69449 AS |
1 | /* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1997, 2009 |
2 | Free Software Foundation, Inc. | |
36e28152 | 3 | This file is part of the GNU C Library. |
a6353123 | 4 | |
36e28152 | 5 | The GNU C Library is free software; you can redistribute it and/or |
3214b89b AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
a6353123 | 9 | |
36e28152 UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
3214b89b | 13 | Lesser General Public License for more details. |
a6353123 | 14 | |
3214b89b | 15 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
a6353123 | 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 | ||
f0e69449 AS |
30 | #ifdef CHECK_SP |
31 | CHECK_SP (env[0].__sp); | |
32 | #endif | |
33 | ||
a6353123 RM |
34 | #if defined(__HAVE_68881__) || defined(__HAVE_FPU__) |
35 | /* Restore the floating-point registers. */ | |
69c85398 RM |
36 | asm volatile("fmovem%.x %0, %/fp0-%/fp7" : |
37 | /* No outputs. */ : "g" (env[0].__fpregs[0])); | |
9c986f87 AS |
38 | #elif defined (__mcffpu__) |
39 | asm volatile("fmovem %0, %/fp0-%/fp7" : | |
40 | /* No outputs. */ : "m" (env[0].__fpregs[0])); | |
a6353123 RM |
41 | #endif |
42 | ||
43 | /* Put VAL in D0. */ | |
69c85398 | 44 | asm volatile("move%.l %0, %/d0" : /* No outputs. */ : |
a6353123 RM |
45 | "g" (val == 0 ? 1 : val) : "d0"); |
46 | ||
47 | asm volatile(/* Restore the data and address registers. */ | |
69c85398 | 48 | "movem%.l %0, %/d1-%/d7/%/a0-%/a7\n" |
a6353123 | 49 | /* Return to setjmp's caller. */ |
e982f638 | 50 | #ifdef __motorola__ |
69c85398 | 51 | "jmp (%/a0)" |
e982f638 | 52 | #else |
69c85398 | 53 | "jmp %/a0@" |
e982f638 RM |
54 | #endif |
55 | : /* No outputs. */ : "g" (env[0].__dregs[0]) | |
a6353123 RM |
56 | /* We don't bother with the clobbers, |
57 | because this code always jumps out anyway. */ | |
58 | ); | |
59 | ||
e1da1289 UD |
60 | /* Avoid `volatile function does return' warnings. */ |
61 | for (;;); | |
a6353123 | 62 | } |