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