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2b778ceb | 1 | /* Copyright (C) 1991-2021 Free Software Foundation, Inc. |
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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 | |
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5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
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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 | |
3214b89b | 12 | Lesser General Public License for more details. |
36e28152 | 13 | |
3214b89b | 14 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff | 15 | License along with the GNU C Library. If not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
61de1372 | 17 | |
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18 | #include <setjmp.h> |
19 | ||
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20 | /* Save the current program position in ENV and return 0. */ |
21 | int | |
6eb7e1da | 22 | inhibit_stack_protector |
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23 | #if defined BSD_SETJMP |
24 | # undef setjmp | |
dfc1be7a | 25 | # define savemask 1 |
c70d76bb AS |
26 | setjmp (jmp_buf env) |
27 | #elif defined BSD__SETJMP | |
28 | # undef _setjmp | |
dfc1be7a | 29 | # define savemask 0 |
c70d76bb AS |
30 | _setjmp (jmp_buf env) |
31 | #else | |
1f58923f | 32 | __sigsetjmp (jmp_buf env, int savemask) |
c70d76bb | 33 | #endif |
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34 | { |
35 | /* Save data registers D1 through D7. */ | |
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36 | asm volatile ("movem%.l %/d1-%/d7, %0" |
37 | : : "m" (env[0].__jmpbuf[0].__dregs[0])); | |
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38 | |
39 | /* Save return address in place of register A0. */ | |
23cd7e44 | 40 | env[0].__jmpbuf[0].__aregs[0] = __builtin_return_address (0); |
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41 | |
42 | /* Save address registers A1 through A5. */ | |
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43 | asm volatile ("movem%.l %/a1-%/a5, %0" |
44 | : : "m" (env[0].__jmpbuf[0].__aregs[1])); | |
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45 | |
46 | /* Save caller's FP, not our own. */ | |
23cd7e44 | 47 | env[0].__jmpbuf[0].__fp = *(int **) __builtin_frame_address (0); |
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48 | |
49 | /* Save caller's SP, not our own. */ | |
23cd7e44 | 50 | env[0].__jmpbuf[0].__sp = (int *) __builtin_frame_address (0) + 2; |
61de1372 | 51 | |
c70d76bb | 52 | #if defined __HAVE_68881__ || defined __HAVE_FPU__ |
61de1372 | 53 | /* Save floating-point (68881) registers FP0 through FP7. */ |
69c85398 | 54 | asm volatile ("fmovem%.x %/fp0-%/fp7, %0" |
fd339eec | 55 | : : "m" (env[0].__jmpbuf[0].__fpregs[0])); |
9c986f87 AS |
56 | #elif defined (__mcffpu__) |
57 | asm volatile ("fmovem %/fp0-%/fp7, %0" | |
58 | : : "m" (env[0].__jmpbuf[0].__fpregs[0])); | |
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59 | #endif |
60 | ||
a3848485 | 61 | #if IS_IN (rtld) |
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62 | /* In ld.so we never save the signal mask. */ |
63 | return 0; | |
64 | #else | |
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65 | /* Save the signal mask if requested. */ |
66 | return __sigjmp_save (env, savemask); | |
23cd7e44 | 67 | #endif |
61de1372 | 68 | } |
3dc8a4b2 | 69 | #if !defined BSD_SETJMP && !defined BSD__SETJMP |
9c986f87 | 70 | libc_hidden_def (__sigsetjmp) |
3dc8a4b2 | 71 | #endif |