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/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
Contributed by Jes Sorensen, <Jes.Sorensen@cern.ch>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC 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 General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#include "auto-host.h"
.section .ctors,"aw","progbits"
.align 8
__CTOR_LIST__:
data8 -1
.section .dtors,"aw","progbits"
.align 8
__DTOR_LIST__:
data8 -1
.section .sdata
.type dtor_ptr,@object
.size dtor_ptr,8
dtor_ptr:
data8 @gprel(__DTOR_LIST__ + 8)
/* A handle for __cxa_finalize to manage c++ local destructors. */
.global __dso_handle
.type __dso_handle,@object
.size __dso_handle,8
#ifdef SHARED
.section .data
__dso_handle:
data8 __dso_handle
#else
.section .bss
.align 8
__dso_handle:
.skip 8
#endif
.hidden __dso_handle
#if HAVE_INITFINI_ARRAY_SUPPORT
.section .fini_array, "a"
data8 @fptr(__do_global_dtors_aux)
.section .init_array, "a"
data8 @fptr(__do_global_ctors_aux)
#else /* !HAVE_INITFINI_ARRAY_SUPPORT */
/*
* Fragment of the ELF _fini routine that invokes our dtor cleanup.
*
* We make the call by indirection, because in large programs the
* .fini and .init sections are not in range of the destination, and
* we cannot allow the linker to insert a stub at the end of this
* fragment of the _fini function. Further, Itanium does not implement
* the long branch instructions, and we do not wish every program to
* trap to the kernel for emulation.
*
* Note that we require __do_global_dtors_aux to preserve the GP,
* so that the next fragment in .fini gets the right value.
*/
.section .fini,"ax","progbits"
{ .mlx
movl r2 = @pcrel(__do_global_dtors_aux - 16)
}
{ .mii
mov r3 = ip
;;
add r2 = r2, r3
;;
}
{ .mib
nop 0
mov b6 = r2
br.call.sptk.many b0 = b6
}
#endif /* !HAVE_INITFINI_ARRAY_SUPPORT */
.section .text
.align 32
.proc __do_global_dtors_aux
__do_global_dtors_aux:
.prologue
#ifndef SHARED
.save ar.pfs, r35
alloc loc3 = ar.pfs, 0, 4, 1, 0
addl loc0 = @gprel(dtor_ptr), gp
.save rp, loc1
mov loc1 = rp
.body
mov loc2 = gp
nop 0
br.sptk.many .entry
#else
/*
if (__cxa_finalize)
__cxa_finalize(__dso_handle)
*/
.save ar.pfs, r35
alloc loc3 = ar.pfs, 0, 4, 1, 0
addl loc0 = @gprel(dtor_ptr), gp
addl r16 = @ltoff(@fptr(__cxa_finalize)), gp
;;
ld8 r16 = [r16]
;;
addl out0 = @ltoff(__dso_handle), gp
cmp.ne p7, p0 = r0, r16
;;
ld8 out0 = [out0]
(p7) ld8 r18 = [r16], 8
.save rp, loc1
mov loc1 = rp
.body
;;
mov loc2 = gp
(p7) ld8 gp = [r16]
(p7) mov b6 = r18
nop 0
nop 0
(p7) br.call.sptk.many rp = b6
;;
nop 0
nop 0
br.sptk.many .entry
#endif
/*
do {
dtor_ptr++;
(*(dtor_ptr-1)) ();
} while (dtor_ptr);
*/
.loop:
st8 [loc0] = r15 // update dtor_ptr (in memory)
ld8 r17 = [r16], 8 // r17 <- dtor's entry-point
nop 0
;;
ld8 gp = [r16] // gp <- dtor's gp
mov b6 = r17
br.call.sptk.many rp = b6
.entry: ld8 r15 = [loc0] // r15 <- dtor_ptr (gp-relative)
;;
add r16 = r15, loc2 // r16 <- dtor_ptr (absolute)
adds r15 = 8, r15
;;
ld8 r16 = [r16] // r16 <- pointer to dtor's fdesc
mov rp = loc1
mov ar.pfs = loc3
;;
cmp.ne p6, p0 = r0, r16
(p6) br.cond.sptk.few .loop
br.ret.sptk.many rp
.endp __do_global_dtors_aux
#ifdef SHARED
.weak __cxa_finalize
#endif
.weak _Jv_RegisterClasses
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