| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Special .init and .fini section support for HPPA |
| 2 | Copyright (C) 2000-2015 Free Software Foundation, Inc. |
| 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 |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | In addition to the permissions in the GNU Lesser General Public |
| 11 | License, the Free Software Foundation gives you unlimited |
| 12 | permission to link the compiled version of this file with other |
| 13 | programs, and to distribute those programs without any restriction |
| 14 | coming from the use of this file. (The GNU Lesser General Public |
| 15 | License restrictions do apply in other respects; for example, they |
| 16 | cover modification of the file, and distribution when not linked |
| 17 | into another program.) |
| 18 | |
| 19 | Note that people who make modified versions of this file are not |
| 20 | obligated to grant this special exception for their modified |
| 21 | versions; it is their choice whether to do so. The GNU Lesser |
| 22 | General Public License gives permission to release a modified |
| 23 | version without this exception; this exception also makes it |
| 24 | possible to release a modified version which carries forward this |
| 25 | exception. |
| 26 | |
| 27 | The GNU C Library is distributed in the hope that it will be useful, |
| 28 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 29 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 30 | Lesser General Public License for more details. |
| 31 | |
| 32 | You should have received a copy of the GNU Lesser General Public |
| 33 | License along with the GNU C Library. If not, see |
| 34 | <http://www.gnu.org/licenses/>. */ |
| 35 | |
| 36 | #include <sysdep.h> |
| 37 | |
| 38 | /* crtn.S puts function epilogues in the .init and .fini sections |
| 39 | corresponding to the prologues in crti.S. */ |
| 40 | |
| 41 | /* Note that we cannot have a weak undefined __gmon_start__, because |
| 42 | that would require this to be PIC, and the linker is currently not |
| 43 | able to generate a proper procedure descriptor for _init. Sad but |
| 44 | true. Anyway, HPPA is one of those horrible architectures where |
| 45 | making the comparison and indirect call is quite expensive (see the |
| 46 | comment in sysdeps/generic/initfini.c). */ |
| 47 | .text |
| 48 | .align 4 |
| 49 | .weak __gmon_start__ |
| 50 | .type __gmon_start__,@function |
| 51 | __gmon_start__: |
| 52 | .proc |
| 53 | .callinfo |
| 54 | .entry |
| 55 | bv,n %r0(%r2) |
| 56 | .exit |
| 57 | .procend |
| 58 | |
| 59 | /* Here is the tail end of _init. We put __gmon_start before this so |
| 60 | that the assembler creates the .PARISC.unwind section for us, ie. |
| 61 | with the right attributes. */ |
| 62 | .section .init, "ax", @progbits |
| 63 | ldw -84(%sp),%rp |
| 64 | copy %r4,%r19 |
| 65 | bv %r0(%rp) |
| 66 | _end_init: |
| 67 | ldwm -64(%sp),%r4 |
| 68 | |
| 69 | /* Our very own unwind info, because the assembler can't handle |
| 70 | functions split into two or more pieces. */ |
| 71 | .section .PARISC.unwind |
| 72 | .extern _init |
| 73 | .word _init, _end_init |
| 74 | .byte 0x08, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x08 |
| 75 | |
| 76 | /* Here is the tail end of _fini. */ |
| 77 | .section .fini, "ax", @progbits |
| 78 | ldw -84(%sp),%rp |
| 79 | copy %r4,%r19 |
| 80 | bv %r0(%rp) |
| 81 | _end_fini: |
| 82 | ldwm -64(%sp),%r4 |
| 83 | |
| 84 | .section .PARISC.unwind |
| 85 | .extern _fini |
| 86 | .word _fini, _end_fini |
| 87 | .byte 0x08, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x08 |