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2b778ceb | 1 | /* Copyright (C) 2009-2021 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
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17 | |
18 | .section .rodata.str1.1,"aMS",@progbits,1 | |
19 | .type longjmp_msg,@object | |
20 | longjmp_msg: | |
21 | .string "longjmp causes uninitialized stack frame" | |
22 | .size longjmp_msg, .-longjmp_msg | |
23 | .text | |
24 | ||
25 | #define __longjmp ____longjmp_chk | |
26 | ||
27 | #ifdef PIC | |
28 | # define CALL_FAIL \ | |
29 | mov.l .Lfail, r1; \ | |
30 | mov.l .Lstr, r4; \ | |
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31 | mov.l r12, @-r15; \ |
32 | cfi_remember_state; \ | |
33 | cfi_adjust_cfa_offset (4); \ | |
34 | cfi_rel_offset (r12, 0); \ | |
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35 | mova .Lgot, r0; \ |
36 | mov.l .Lgot, r12; \ | |
37 | add r0, r12; \ | |
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38 | sts.l pr, @-r15; \ |
39 | cfi_adjust_cfa_offset (4); \ | |
40 | cfi_rel_offset (pr, 0); \ | |
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41 | bsrf r1; \ |
42 | add r12, r4; \ | |
1518f58b | 43 | /* Unreachable. */ \ |
04733592 | 44 | .Lfail0: \ |
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45 | .align 2; \ |
46 | .Lgot: \ | |
47 | .long _GLOBAL_OFFSET_TABLE_; \ | |
48 | .Lstr: \ | |
49 | .long longjmp_msg@GOTOFF; \ | |
50 | .Lfail: \ | |
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51 | .long __GI___fortify_fail@PLT-(.Lfail0-.); \ |
52 | cfi_restore_state; | |
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53 | #else |
54 | # define CALL_FAIL \ | |
55 | mov.l .Lfail, r1; \ | |
56 | mov.l .Lstr, r4; \ | |
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57 | sts.l pr, @-r15; \ |
58 | cfi_remember_state; \ | |
59 | cfi_adjust_cfa_offset (4); \ | |
60 | cfi_rel_offset (pr, 0); \ | |
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61 | jsr @r1; \ |
62 | nop; \ | |
1518f58b | 63 | /* Unreachable. */ \ |
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64 | .align 2; \ |
65 | .Lstr: \ | |
66 | .long longjmp_msg; \ | |
67 | .Lfail: \ | |
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68 | .long __fortify_fail; \ |
69 | cfi_restore_state; | |
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70 | #endif |
71 | ||
72 | #define CHECK_SP(reg) \ | |
73 | cmp/hs r15, reg; \ | |
74 | bt .Lok; \ | |
75 | CALL_FAIL \ | |
76 | .Lok: | |
77 | ||
78 | #include <__longjmp.S> |