projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 83ffe9cd | 1 | /* Copyright (C) 2000-2023 Free Software Foundation, Inc. |
| 1a66cd67 AO |
2 | This file was adapted from glibc sources. |
| 3 | ||
| 7ec022b2 | 4 | This file is part of GCC. |
| 1a66cd67 | 5 | |
| 7ec022b2 | 6 | GCC is free software; you can redistribute it and/or modify it |
| 1a66cd67 | 7 | under the terms of the GNU General Public License as published by the |
| 748086b7 | 8 | Free Software Foundation; either version 3, or (at your option) any |
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9 | later version. |
| 10 | ||
| 7ec022b2 | 11 | GCC is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | General Public License for more details. | |
| 15 | ||
| 748086b7 JJ |
16 | Under Section 7 of GPL version 3, you are granted additional |
| 17 | permissions described in the GCC Runtime Library Exception, version | |
| 18 | 3.1, as published by the Free Software Foundation. | |
| 19 | ||
| 20 | You should have received a copy of the GNU General Public License and | |
| 21 | a copy of the GCC Runtime Library Exception along with this program; | |
| 22 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 23 | <http://www.gnu.org/licenses/>. */ | |
| 24 | ||
| 69044fa9 | 25 | #include "crt.h" |
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26 | |
| 27 | /* The code in sections .init and .fini is supposed to be a single | |
| 28 | regular function. The function in .init is called directly from | |
| 5f73c6cc | 29 | start in crt1.S. The function in .fini is atexit()ed in crt1.S |
| 1a66cd67 AO |
30 | too. |
| 31 | ||
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32 | crti.S contributes the prologue of a function to these sections, |
| 33 | and crtn.S comes up the epilogue. STARTFILE_SPEC should list | |
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34 | crti.o before any other object files that might add code to .init |
| 35 | or .fini sections, and ENDFILE_SPEC should list crtn.o after any | |
| 36 | such object files. */ | |
| 37 | ||
| 38 | .section .init | |
| ef14c259 | 39 | /* The alignment below can't be smaller, otherwise the mova below |
| 1a66cd67 AO |
40 | breaks. Yes, we might align just the label, but then we'd be |
| 41 | exchanging an alignment here for one there, since the code fragment | |
| 42 | below ensures 4-byte alignment on __ELF__. */ | |
| 43 | #ifdef __ELF__ | |
| 44 | .p2align 2 | |
| 45 | #else | |
| 46 | .p2align 1 | |
| 47 | #endif | |
| 69044fa9 OE |
48 | .global GLOBAL(_init) |
| 49 | GLOBAL(_init): | |
| 1a66cd67 AO |
50 | #ifdef __ELF__ |
| 51 | mov.l r12,@-r15 | |
| 52 | mova 0f,r0 | |
| 53 | mov.l 0f,r12 | |
| 54 | #endif | |
| 55 | mov.l r14,@-r15 | |
| 56 | #ifdef __ELF__ | |
| 57 | add r0,r12 | |
| 58 | #endif | |
| 59 | sts.l pr,@-r15 | |
| 60 | #ifdef __ELF__ | |
| 61 | bra 1f | |
| 62 | #endif | |
| 63 | mov r15,r14 | |
| 64 | #ifdef __ELF__ | |
| 65 | 0: .long _GLOBAL_OFFSET_TABLE_ | |
| 66 | 1: | |
| 67 | #endif | |
| 68 | ||
| 69 | .section .fini | |
| ef14c259 | 70 | /* The alignment below can't be smaller, otherwise the mova below |
| 1a66cd67 AO |
71 | breaks. Yes, we might align just the label, but then we'd be |
| 72 | exchanging an alignment here for one there, since the code fragment | |
| 73 | below ensures 4-byte alignment on __ELF__. */ | |
| 74 | #ifdef __ELF__ | |
| 75 | .p2align 2 | |
| 76 | #else | |
| 77 | .p2align 1 | |
| 78 | #endif | |
| 69044fa9 OE |
79 | .global GLOBAL(_fini) |
| 80 | GLOBAL(_fini): | |
| 1a66cd67 AO |
81 | #ifdef __ELF__ |
| 82 | mov.l r12,@-r15 | |
| 83 | mova 0f,r0 | |
| 84 | mov.l 0f,r12 | |
| 85 | #endif | |
| 86 | mov.l r14,@-r15 | |
| 87 | #ifdef __ELF__ | |
| 88 | add r0,r12 | |
| 89 | #endif | |
| 90 | sts.l pr,@-r15 | |
| 91 | #ifdef __ELF__ | |
| 92 | bra 1f | |
| 93 | #endif | |
| 94 | mov r15,r14 | |
| 95 | #ifdef __ELF__ | |
| 96 | 0: .long _GLOBAL_OFFSET_TABLE_ | |
| 97 | 1: | |
| 98 | #endif |