| 1 | /* Save current context. |
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| 2 | Copyright (C) 2012-2024 Free Software Foundation, Inc. |
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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 |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the 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 | #include "ucontext_i.h" |
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| 22 | |
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| 23 | |
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| 24 | ENTRY(__getcontext) |
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| 25 | /* Load address of the context data structure. */ |
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| 26 | move.l 4(%sp), %a0 |
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| 27 | |
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| 28 | /* Save the preserved registers and the return address. */ |
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| 29 | movem.l %d2-%d7, oGREGS+2*4(%a0) |
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| 30 | movem.l %a2-%a6, oGREGS+10*4(%a0) |
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| 31 | lea 4(%sp), %a1 |
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| 32 | move.l %a1, oSP(%a0) |
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| 33 | move.l (%sp), oPC(%a0) |
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| 34 | fmovem.l %fpsr/%fpcr/%fpiar, oFPREGS(%a0) |
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| 35 | fmovem.x %fp2-%fp7, oFP2(%a0) |
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| 36 | cfi_def_cfa (%a0, 0) |
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| 37 | cfi_offset (%d2, oGREGS+2*4) |
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| 38 | cfi_offset (%d3, oGREGS+3*4) |
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| 39 | cfi_offset (%pc, oPC) |
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| 40 | |
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| 41 | /* Save the current signal mask. */ |
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| 42 | lea oSIGMASK(%a0), %a1 |
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| 43 | move.l %a1, %d3 |
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| 44 | clr.l %d2 |
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| 45 | move.l #SIG_SETMASK, %d1 |
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| 46 | move.l #__NR_sigprocmask, %d0 |
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| 47 | trap #0 |
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| 48 | /* Restore registers. */ |
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| 49 | move.l oGREGS+2*4(%a0), %d2 |
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| 50 | cfi_restore (%d2) |
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| 51 | move.l oGREGS+3*4(%a0), %d3 |
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| 52 | cfi_restore (%d3) |
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| 53 | cfi_def_cfa (%sp, 4) |
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| 54 | cfi_offset (%pc, -4) |
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| 55 | cmp.l #-4095, %d0 /* Check %d0 for error. */ |
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| 56 | jcc SYSCALL_ERROR_LABEL /* Jump to error handler. */ |
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| 57 | |
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| 58 | 0: /* All done, return 0 for success. */ |
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| 59 | clr.l %d0 |
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| 60 | rts |
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| 61 | PSEUDO_END(__getcontext) |
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| 62 | |
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| 63 | weak_alias (__getcontext, getcontext) |
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| 64 | |
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