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/* Copyright (C) 2000, 2001, 2003, 2005, 2009 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 .jcr,"aw","progbits"
        .align  8
__JCR_LIST__:

.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


#ifdef HAVE_INITFINI_ARRAY_SUPPORT

.section .fini_array, "a"
        data8 @fptr(__do_global_dtors_aux)

.section .init_array, "a"
        data8 @fptr(__do_jv_register_classes)
        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
        }

/* Likewise for _init.  */

.section .init,"ax","progbits"
        { .mlx
          movl r2 = @pcrel(__do_jv_register_classes - 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

        .align  32
        .proc   __do_jv_register_classes
__do_jv_register_classes:
        .prologue
        .save ar.pfs, r33
        alloc loc1 = ar.pfs, 0, 3, 1, 0
        movl out0 = @gprel(__JCR_LIST__)
        ;;

        addl r14 = @ltoff(@fptr(_Jv_RegisterClasses)), gp
        add out0 = out0, gp
        .save rp, loc0
        mov loc0 = rp
        .body
        ;;

        ld8 r14 = [r14]
        ld8 r15 = [out0]
        cmp.ne p6, p0 = r0, r0
        ;;

        cmp.eq.or p6, p0 = r0, r14
        cmp.eq.or p6, p0 = r0, r15
(p6)    br.ret.sptk.many rp

        ld8 r15 = [r14], 8
        ;;
        nop 0
        mov b6 = r15

        mov loc2 = gp
        ld8 gp = [r14]
        br.call.sptk.many rp = b6
        ;;

        mov gp = loc2
        mov rp = loc0
        mov ar.pfs = loc1

        nop 0
        nop 0
        br.ret.sptk.many rp
        .endp   __do_jv_register_classes

#ifdef SHARED
.weak __cxa_finalize
#endif
.weak _Jv_RegisterClasses