e83f7ba2c9
. file- and functionality-compatible with previous situation
(FreeBSD csu) (with a crt1.o -> crt0.o symlink in /usr/lib)
. harmonizes source with netbsd
. harmonizes linker invocation (e.g. clang) with netbsd
. helpful to get some arm code in there for the arm port project
157 lines
3.3 KiB
ArmAsm
157 lines
3.3 KiB
ArmAsm
/* $NetBSD: crtbegin.S,v 1.2 2010/11/30 18:37:59 joerg Exp $ */
|
|
/*-
|
|
* Copyright (c) 2010 Joerg Sonnenberger <joerg@NetBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <machine/asm.h>
|
|
|
|
RCSID("$NetBSD: crtbegin.S,v 1.2 2010/11/30 18:37:59 joerg Exp $")
|
|
|
|
.section .ctors, "aw", @progbits
|
|
.align 8
|
|
__CTOR_LIST__:
|
|
.quad -1
|
|
|
|
.section .dtors, "aw", @progbits
|
|
.align 8
|
|
__DTOR_LIST__:
|
|
.quad -1
|
|
|
|
.section .eh_frame, "a", @progbits
|
|
.align 8
|
|
__EH_FRAME_LIST__:
|
|
|
|
.section .jcr, "aw", @progbits
|
|
.align 8
|
|
__JCR_LIST__:
|
|
|
|
.section .data.rel, "aw", @progbits
|
|
.align 8
|
|
.type __dso_handle, @object
|
|
.size __dso_handle, 8
|
|
.globl __dso_handle
|
|
.hidden __dso_handle
|
|
__dso_handle:
|
|
#ifdef SHARED
|
|
.quad __dso_handle
|
|
#else
|
|
.quad 0
|
|
#endif
|
|
|
|
__dwarf_eh_object:
|
|
.zero 64
|
|
|
|
__initialized:
|
|
.zero 1
|
|
__finished:
|
|
.zero 1
|
|
|
|
.text
|
|
.weak __cxa_finalize
|
|
.weak __deregister_frame_info
|
|
.weak __register_frame_info
|
|
.weak _Jv_RegisterClasses
|
|
|
|
__do_global_dtors_aux:
|
|
cmpb $0, __finished(%rip)
|
|
je 1f
|
|
ret
|
|
1:
|
|
pushq %rbx
|
|
movb $1, __finished(%rip)
|
|
|
|
|
|
#ifdef SHARED
|
|
cmpq $0, __cxa_finalize@GOTPCREL(%rip)
|
|
je 2f
|
|
movq __dso_handle(%rip), %rdi
|
|
call __cxa_finalize@PLT
|
|
2:
|
|
#endif
|
|
|
|
leaq 8+__DTOR_LIST__(%rip), %rbx
|
|
3:
|
|
movq (%rbx), %rax
|
|
testq %rax, %rax
|
|
je 4f
|
|
call *%rax
|
|
addq $8, %rbx
|
|
jmp 3b
|
|
4:
|
|
|
|
cmpq $0, __deregister_frame_info@GOTPCREL(%rip)
|
|
je 5f
|
|
leaq __EH_FRAME_LIST__(%rip), %rdi
|
|
call __deregister_frame_info@PLT
|
|
5:
|
|
popq %rbx
|
|
ret
|
|
|
|
|
|
__do_global_ctors_aux:
|
|
cmpb $0, __initialized(%rip)
|
|
je 1f
|
|
ret
|
|
1:
|
|
pushq %rbx
|
|
movb $1, __initialized(%rip)
|
|
|
|
cmpq $0, __register_frame_info@GOTPCREL(%rip)
|
|
je 2f
|
|
leaq __dwarf_eh_object(%rip), %rsi
|
|
leaq __EH_FRAME_LIST__(%rip), %rdi
|
|
call __register_frame_info@PLT
|
|
|
|
2:
|
|
cmpq $0, _Jv_RegisterClasses@GOTPCREL(%rip)
|
|
je 3f
|
|
leaq __JCR_LIST__(%rip), %rdi
|
|
cmpq $0, (%rdi)
|
|
je 3f
|
|
call _Jv_RegisterClasses@PLT
|
|
3:
|
|
|
|
leaq -8+__CTOR_LIST_END__(%rip), %rbx
|
|
4:
|
|
movq (%rbx), %rax
|
|
cmpq $-1, %rax
|
|
je 5f
|
|
call *%rax
|
|
subq $8, %rbx
|
|
jmp 4b
|
|
|
|
5:
|
|
popq %rbx
|
|
|
|
ret
|
|
|
|
.section .init, "ax", @progbits
|
|
call __do_global_ctors_aux
|
|
.section .fini, "ax", @progbits
|
|
call __do_global_dtors_aux
|