| 1 | /* Copyright (C) 1997-2024 Free Software Foundation, Inc. |
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| 2 | |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public License as |
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| 7 | published by the Free Software Foundation; either version 2.1 of the |
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| 8 | License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library. If not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <sysdep.h> |
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| 20 | |
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| 21 | /* This source produces 3 functions: |
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| 22 | __sigsetjmp (jmpbuf,savemask) |
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| 23 | setjmp (jmpbuf) - equivalent to __sigsetjump (jmpbuf, 1) |
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| 24 | _setjmp (jmpbuf) - equivalent to __sigsetjump (jmpbuf, 0) |
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| 25 | */ |
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| 26 | |
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| 27 | #ifndef setjmp_name |
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| 28 | # define setjmp_name __sigsetjmp |
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| 29 | # define SET_MASK_ARG |
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| 30 | #else |
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| 31 | # define SET_MASK_ARG addik r6,r0,SAVEMASK |
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| 32 | #endif |
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| 33 | |
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| 34 | ENTRY (setjmp_name) |
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| 35 | swi r1,r5,0 |
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| 36 | swi r2,r5,4 |
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| 37 | swi r13,r5,8 |
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| 38 | swi r14,r5,12 |
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| 39 | swi r15,r5,16 |
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| 40 | swi r16,r5,20 |
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| 41 | swi r17,r5,24 |
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| 42 | swi r18,r5,28 |
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| 43 | swi r19,r5,32 |
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| 44 | swi r20,r5,36 |
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| 45 | swi r21,r5,40 |
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| 46 | swi r22,r5,44 |
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| 47 | swi r23,r5,48 |
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| 48 | swi r24,r5,52 |
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| 49 | swi r25,r5,56 |
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| 50 | swi r26,r5,60 |
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| 51 | swi r27,r5,64 |
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| 52 | swi r28,r5,68 |
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| 53 | swi r29,r5,72 |
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| 54 | swi r30,r5,76 |
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| 55 | swi r31,r5,80 |
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| 56 | |
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| 57 | SET_MASK_ARG |
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| 58 | |
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| 59 | /* Make a tail call to __sigjmp_save; it takes the same args. */ |
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| 60 | #ifdef PIC |
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| 61 | /* We cannot use the PLT, because it requires that r20 be set, but |
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| 62 | we can't save and restore our caller's value. Instead, we do an |
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| 63 | indirect jump through the GOT, using the temporary register |
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| 64 | %ecx, which is call-clobbered. */ |
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| 65 | mfs r12,rpc |
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| 66 | addik r12,r12,_GLOBAL_OFFSET_TABLE_+8 |
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| 67 | lwi r12,r12,__sigjmp_save@GOT |
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| 68 | brad r12 |
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| 69 | #else |
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| 70 | brid __sigjmp_save |
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| 71 | #endif |
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| 72 | nop |
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| 73 | END (setjmp_name) |
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| 74 | |
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| 75 | libc_hidden_def (setjmp_name) |
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| 76 | |
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