| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 1997-2015 Free Software Foundation, Inc. |
| 2 | |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public License as |
| 7 | published by the Free Software Foundation; either version 2.1 of the |
| 8 | License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library. If not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <sysdep.h> |
| 20 | #include <jmpbuf-offsets.h> |
| 21 | #include <stap-probe.h> |
| 22 | |
| 23 | /* Keep traditional entry points in with sigsetjmp(). */ |
| 24 | ENTRY (setjmp) |
| 25 | mov x1, #1 |
| 26 | b 1f |
| 27 | END (setjmp) |
| 28 | |
| 29 | ENTRY (_setjmp) |
| 30 | mov x1, #0 |
| 31 | b 1f |
| 32 | END (_setjmp) |
| 33 | libc_hidden_def (_setjmp) |
| 34 | |
| 35 | ENTRY (__sigsetjmp) |
| 36 | |
| 37 | 1: |
| 38 | stp x19, x20, [x0, #JB_X19<<3] |
| 39 | stp x21, x22, [x0, #JB_X21<<3] |
| 40 | stp x23, x24, [x0, #JB_X23<<3] |
| 41 | stp x25, x26, [x0, #JB_X25<<3] |
| 42 | stp x27, x28, [x0, #JB_X27<<3] |
| 43 | |
| 44 | #ifdef PTR_MANGLE |
| 45 | PTR_MANGLE (x4, x30, x3, x2) |
| 46 | stp x29, x4, [x0, #JB_X29<<3] |
| 47 | #else |
| 48 | stp x29, x30, [x0, #JB_X29<<3] |
| 49 | #endif |
| 50 | /* setjmp probe takes 3 arguments, address of jump buffer |
| 51 | first argument (8@x0), return value second argument (-4@x1), |
| 52 | and target address (8@x30), respectively. */ |
| 53 | LIBC_PROBE (setjmp, 3, 8@x0, -4@x1, 8@x30) |
| 54 | stp d8, d9, [x0, #JB_D8<<3] |
| 55 | stp d10, d11, [x0, #JB_D10<<3] |
| 56 | stp d12, d13, [x0, #JB_D12<<3] |
| 57 | stp d14, d15, [x0, #JB_D14<<3] |
| 58 | #ifdef PTR_MANGLE |
| 59 | mov x4, sp |
| 60 | PTR_MANGLE (x5, x4, x3, x2) |
| 61 | str x5, [x0, #JB_SP<<3] |
| 62 | #else |
| 63 | mov x2, sp |
| 64 | str x2, [x0, #JB_SP<<3] |
| 65 | #endif |
| 66 | #if IS_IN (rtld) |
| 67 | /* In ld.so we never save the signal mask */ |
| 68 | mov w0, #0 |
| 69 | RET |
| 70 | #else |
| 71 | b C_SYMBOL_NAME(__sigjmp_save) |
| 72 | #endif |
| 73 | END (__sigsetjmp) |
| 74 | hidden_def (__sigsetjmp) |