| 1 | /* x86-64 PLT dl-trampoline state macros. |
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| 2 | Copyright (C) 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 | #if (STATE_SAVE_ALIGNMENT % 16) != 0 |
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| 20 | # error STATE_SAVE_ALIGNMENT must be multiple of 16 |
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| 21 | #endif |
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| 22 | |
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| 23 | #if (STATE_SAVE_OFFSET % STATE_SAVE_ALIGNMENT) != 0 |
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| 24 | # error STATE_SAVE_OFFSET must be multiple of STATE_SAVE_ALIGNMENT |
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| 25 | #endif |
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| 26 | |
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| 27 | #if DL_RUNTIME_RESOLVE_REALIGN_STACK |
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| 28 | /* Local stack area before jumping to function address: RBX. */ |
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| 29 | # define LOCAL_STORAGE_AREA 8 |
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| 30 | # define BASE rbx |
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| 31 | # ifdef USE_FXSAVE |
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| 32 | /* Use fxsave to save XMM registers. */ |
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| 33 | # define REGISTER_SAVE_AREA (512 + STATE_SAVE_OFFSET) |
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| 34 | # if (REGISTER_SAVE_AREA % 16) != 0 |
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| 35 | # error REGISTER_SAVE_AREA must be multiple of 16 |
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| 36 | # endif |
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| 37 | # endif |
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| 38 | #else |
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| 39 | # ifndef USE_FXSAVE |
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| 40 | # error USE_FXSAVE must be defined |
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| 41 | # endif |
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| 42 | /* Use fxsave to save XMM registers. */ |
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| 43 | # define REGISTER_SAVE_AREA (512 + STATE_SAVE_OFFSET + 8) |
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| 44 | /* Local stack area before jumping to function address: All saved |
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| 45 | registers. */ |
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| 46 | # define LOCAL_STORAGE_AREA REGISTER_SAVE_AREA |
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| 47 | # define BASE rsp |
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| 48 | # if (REGISTER_SAVE_AREA % 16) != 8 |
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| 49 | # error REGISTER_SAVE_AREA must be odd multiple of 8 |
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| 50 | # endif |
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| 51 | #endif |
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| 52 | |
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