diff options
Diffstat (limited to 'sysdeps/hppa/crtn.S')
| -rw-r--r-- | sysdeps/hppa/crtn.S | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/sysdeps/hppa/crtn.S b/sysdeps/hppa/crtn.S new file mode 100644 index 0000000000..007ccec074 --- /dev/null +++ b/sysdeps/hppa/crtn.S @@ -0,0 +1,87 @@ +/* Special .init and .fini section support for HPPA + Copyright (C) 2000-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file with other + programs, and to distribute those programs without any restriction + coming from the use of this file. (The GNU Lesser General Public + License restrictions do apply in other respects; for example, they + cover modification of the file, and distribution when not linked + into another program.) + + Note that people who make modified versions of this file are not + obligated to grant this special exception for their modified + versions; it is their choice whether to do so. The GNU Lesser + General Public License gives permission to release a modified + version without this exception; this exception also makes it + possible to release a modified version which carries forward this + exception. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +/* crtn.S puts function epilogues in the .init and .fini sections + corresponding to the prologues in crti.S. */ + +/* Note that we cannot have a weak undefined __gmon_start__, because + that would require this to be PIC, and the linker is currently not + able to generate a proper procedure descriptor for _init. Sad but + true. Anyway, HPPA is one of those horrible architectures where + making the comparison and indirect call is quite expensive (see the + comment in sysdeps/generic/initfini.c). */ + .text + .align 4 + .weak __gmon_start__ + .type __gmon_start__,@function +__gmon_start__: + .proc + .callinfo + .entry + bv,n %r0(%r2) + .exit + .procend + +/* Here is the tail end of _init. We put __gmon_start before this so + that the assembler creates the .PARISC.unwind section for us, ie. + with the right attributes. */ + .section .init, "ax", @progbits + ldw -84(%sp),%rp + copy %r4,%r19 + bv %r0(%rp) +_end_init: + ldwm -64(%sp),%r4 + +/* Our very own unwind info, because the assembler can't handle + functions split into two or more pieces. */ + .section .PARISC.unwind + .extern _init + .word _init, _end_init + .byte 0x08, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x08 + +/* Here is the tail end of _fini. */ + .section .fini, "ax", @progbits + ldw -84(%sp),%rp + copy %r4,%r19 + bv %r0(%rp) +_end_fini: + ldwm -64(%sp),%r4 + + .section .PARISC.unwind + .extern _fini + .word _fini, _end_fini + .byte 0x08, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x08 |