- # Copyright (C) 1996, 1998 Free Software Foundation, Inc.
- # Contributed by Richard Henderson (rth@tamu.edu)
- #
- # This file 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 2, or (at your option) any
- # later version.
- #
- # In addition to the permissions in the GNU 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 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.)
- #
- # This file 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.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program; see the file COPYING. If not, write to
- # the Free Software Foundation, 59 Temple Place - Suite 330,
- # Boston, MA 02111-1307, USA.
- #
- # As a special exception, if you link this library with files
- # compiled with GCC to produce an executable, this does not cause
- # the resulting executable to be covered by the GNU General Public License.
- # This exception does not however invalidate any other reasons why
- # the executable file might be covered by the GNU General Public License.
-
- #
- # Heads of the constructor/destructor lists.
- #
-
- # The __*TOR_LIST__ symbols are not global because when this file is used
- # in a shared library, we do not want the symbol to fall over to the
- # application's lists.
+/*
+ * Copyright (C) 1996, 1998, 2000 Free Software Foundation, Inc.
+ * Contributed by Richard Henderson (rth@tamu.edu)
+ *
+ * This file 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 2, or (at your option) any
+ * later version.
+ *
+ * In addition to the permissions in the GNU 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 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.)
+ *
+ * This file 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * As a special exception, if you link this library with files
+ * compiled with GCC to produce an executable, this does not cause
+ * the resulting executable to be covered by the GNU General Public License.
+ * This exception does not however invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public License.
+ */
+
+#include "auto-host.h"
+
+
+/*
+ * Heads of the constructor/destructor lists.
+ */
+
+/* The __*TOR_LIST__ symbols are not global because when this file is used
+ in a shared library, we do not want the symbol to fall over to the
+ application's lists. */
.section .ctors,"aw"
__DTOR_LIST__:
.quad -1
+.section .eh_frame,"aw"
+__EH_FRAME_BEGIN__:
- #
- # Fragment of the ELF _fini routine that invokes our dtor cleanup.
- #
+/*
+ * Fragment of the ELF _fini routine that invokes our dtor cleanup.
+ */
.section .fini,"ax"
- # Since the bits of the _fini function are spread across many
- # object files, each potentially with its own GP, we must
- # assume we need to load ours. Further, our .fini section
- # can easily be more than 4MB away from our .text bits so we
- # can't use bsr.
+ /* Since the bits of the _fini function are spread across many
+ object files, each potentially with its own GP, we must
+ assume we need to load ours. Further, our .fini section
+ can easily be more than 4MB away from our .text bits so we
+ can't use bsr. */
br $29,1f
1: ldgp $29,0($29)
jsr $26,__do_global_dtors_aux
- # Must match the alignment we got from crti.o else we get
- # zero-filled holes in our _fini function and then SIGILL.
+ /* Must match the alignment we got from crti.o else we get
+ zero-filled holes in our _fini function and then SIGILL. */
.align 3
- #
- # Invoke our destructors in order.
- #
-
-.data
-
- # Support recursive calls to exit.
-9: .quad __DTOR_LIST__
+/*
+ * Fragment of the ELF _init routine that sets up the frame info.
+ */
+
+.section .init,"ax"
+ br $29,1f
+1: ldgp $29,0($29)
+ jsr $26,__do_frame_setup
+ .align 3
+
+/*
+ * Invoke our destructors in order.
+ */
+
+.section .sdata
+
+/* Support recursive calls to exit. */
+ .type dtor_ptr,@object
+ .size dtor_ptr,8
+dtor_ptr:
+ .quad __DTOR_LIST__ + 8
+
+/* A globally unique widget for c++ local destructors to hang off.
+
+ This has a unique value in every dso; in the main program its
+ value is zero. The object should be protected. This means the
+ instance in any dso or the main program is not used in any other
+ dso. The dynamic linker takes care of this. */
+
+ .global __dso_handle
+ .type __dso_handle,@object
+ .size __dso_handle,8
+#ifdef SHARED
+.section .data
+ .align 3
+__dso_handle:
+ .quad __dso_handle
+#else
+.section .bss
+ .align 3
+__dso_handle:
+ .zero 8
+#endif
+#ifdef HAVE_GAS_HIDDEN
+ .hidden __dso_handle
+#endif
.text
.mask 0x4000200,-16
.prologue 1
- lda $9,9b
- br 1f
-0: stq $1,0($9)
+#ifdef SHARED
+ /* Do c++ local destructors. */
+ lda $1,__cxa_finalize
+ beq $1,0f
+ lda $16,__dso_handle
+ jsr $26,__cxa_finalize
+ ldgp $29,0($26)
+#endif
+
+0: lda $9,dtor_ptr
+ br 2f
+1: stq $1,0($9)
jsr $26,($27)
-1: ldq $1,0($9)
- ldq $27,8($1)
+ ldgp $29,0($26)
+2: ldq $1,0($9)
+ ldq $27,0($1)
addq $1,8,$1
- bne $27,0b
+ bne $27,1b
- ldq $26,0($30)
+ /* Remove our frame info. */
+ lda $1,__deregister_frame_info
+ beq $1,3f
+ lda $16,__EH_FRAME_BEGIN__
+ jsr $26,__deregister_frame_info
+ ldgp $29,0($26)
+
+3: ldq $26,0($30)
ldq $9,8($30)
lda $30,16($30)
ret
.end __do_global_dtors_aux
+
+/*
+ * Install our frame info.
+ */
+
+/* ??? How can we rationally keep this size correct? */
+
+.section .bss
+ .type frame_object,@object
+ .size frame_object, 48
+ .align 3
+frame_object:
+ .zero 48
+
+.text
+
+ .align 3
+ .ent __do_frame_setup
+
+__do_frame_setup:
+ ldgp $29,0($27)
+ lda $30,-16($30)
+ .frame $30,16,$26,0
+ stq $26,0($30)
+ .mask 0x4000000,-16
+ .prologue 1
+
+ lda $1,__register_frame_info
+ beq $1,0f
+ lda $16,__EH_FRAME_BEGIN__
+ lda $17,frame_object
+ jsr $26,__register_frame_info
+ ldgp $29,0($26)
+
+ ldq $26,0($30)
+0: lda $30,16($30)
+ ret
+
+ .end __do_frame_setup
+
+.weak __register_frame_info
+.weak __deregister_frame_info
+#ifdef SHARED
+.weak __cxa_finalize
+#endif
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