| 1 | /* Copyright (C) 1997-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 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 |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | /* __sigsetjmp is implemented in terms of the getcontext trap on |
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| 19 | Linux/Sparc64. */ |
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| 20 | |
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| 21 | #include <sysdep.h> |
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| 22 | |
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| 23 | /* Offsets into the jmp_buf structure. */ |
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| 24 | |
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| 25 | #define O_mask_was_saved 512 |
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| 26 | #define O_gregs 32 |
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| 27 | #define O_g1 (O_gregs + 4*8) |
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| 28 | |
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| 29 | /* int _setjmp(jmp_buf) */ |
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| 30 | |
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| 31 | ENTRY(_setjmp) |
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| 32 | ba __sigsetjmp_local |
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| 33 | set 0, %o1 |
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| 34 | END(_setjmp) |
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| 35 | libc_hidden_def (_setjmp) |
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| 36 | |
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| 37 | /* int setjmp(jmp_buf) */ |
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| 38 | |
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| 39 | ENTRY(setjmp) |
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| 40 | ba,pt %xcc, __sigsetjmp_local |
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| 41 | set 1, %o1 |
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| 42 | END(setjmp) |
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| 43 | |
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| 44 | /* int __sigsetjmp(jmp_buf, savemask) */ |
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| 45 | |
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| 46 | ENTRY(__sigsetjmp) |
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| 47 | __sigsetjmp_local: |
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| 48 | |
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| 49 | /* Record whether the user is intending to save the sigmask. */ |
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| 50 | st %o1, [%o0 + O_mask_was_saved] |
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| 51 | |
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| 52 | /* Load up our return value, as longjmp is going to override |
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| 53 | the jmp_buf on its way back. */ |
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| 54 | mov %g0, %g1 |
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| 55 | |
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| 56 | /* And call getcontext! */ |
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| 57 | ta 0x6e |
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| 58 | |
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| 59 | retl |
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| 60 | mov %g1, %o0 |
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| 61 | |
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| 62 | END(__sigsetjmp) |
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| 63 | hidden_def (__sigsetjmp) |
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| 64 | |
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| 65 | weak_extern(_setjmp) |
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| 66 | weak_extern(setjmp) |
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| 67 | |
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