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c053fa34 | 1 | /* Special .init and .fini section support for HPPA |
b168057a | 2 | Copyright (C) 2000-2015 Free Software Foundation, Inc. |
c053fa34 CD |
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 |