| 1 | /* Copyright (C) 1991-2022 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 | #include <setjmp.h> |
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| 19 | #include <stdlib.h> |
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| 20 | |
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| 21 | /* Jump to the position specified by ENV, causing the |
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| 22 | setjmp call there to return VAL, or 1 if VAL is 0. */ |
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| 23 | void |
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| 24 | __longjmp (__jmp_buf env, int val) |
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| 25 | { |
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| 26 | /* This restores the FP and SP that setjmp's caller had, |
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| 27 | and puts the return address into A0 and VAL into D0. */ |
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| 28 | |
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| 29 | #ifdef CHECK_SP |
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| 30 | CHECK_SP (env[0].__sp); |
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| 31 | #endif |
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| 32 | |
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| 33 | #if defined(__HAVE_68881__) || defined(__HAVE_FPU__) |
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| 34 | /* Restore the floating-point registers. */ |
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| 35 | asm volatile("fmovem%.x %0, %/fp0-%/fp7" : |
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| 36 | /* No outputs. */ : "g" (env[0].__fpregs[0])); |
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| 37 | #elif defined (__mcffpu__) |
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| 38 | asm volatile("fmovem %0, %/fp0-%/fp7" : |
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| 39 | /* No outputs. */ : "m" (env[0].__fpregs[0])); |
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| 40 | #endif |
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| 41 | |
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| 42 | /* Put VAL in D0. */ |
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| 43 | asm volatile("move%.l %0, %/d0" : /* No outputs. */ : |
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| 44 | "g" (val == 0 ? 1 : val) : "d0" ); |
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| 45 | |
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| 46 | asm volatile(/* Restore the data and address registers. */ |
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| 47 | "movem%.l %0, %/d1-%/d7/%/a0-%/a7\n" |
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| 48 | /* Return to setjmp's caller. */ |
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| 49 | #ifdef __motorola__ |
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| 50 | "jmp (%/a0)" |
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| 51 | #else |
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| 52 | "jmp %/a0@" |
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| 53 | #endif |
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| 54 | : /* No outputs. */ : "g" (env[0].__dregs[0]) |
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| 55 | /* We don't bother with the clobbers, |
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| 56 | because this code always jumps out anyway. */ |
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| 57 | ); |
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| 58 | |
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| 59 | /* Avoid `volatile function does return' warnings. */ |
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| 60 | for (;;); |
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| 61 | } |
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| 62 | |
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