# 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. .section .ctors,"aw" .align 3 __CTOR_LIST__: .quad -1 .section .dtors,"aw" .align 3 __DTOR_LIST__: .quad -1 .section .eh_frame,"aw" __EH_FRAME_BEGIN__: # # 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. br $29,1f 1: ldgp $29,0($29) jsr $26,__do_global_dtors_aux # Ideally this call would go in crtend.o, except that we can't # get hold of __EH_FRAME_BEGIN__ there. jsr $26,__do_frame_takedown # Must match the alignment we got from crti.o else we get # zero-filled holes in our _fini function and then SIGILL. .align 3 # # 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. # .data # Support recursive calls to exit. $ptr: .quad __DTOR_LIST__ .text .align 3 .ent __do_global_dtors_aux __do_global_dtors_aux: lda $30,-16($30) .frame $30,16,$26,0 stq $9,8($30) stq $26,0($30) .mask 0x4000200,-16 .prologue 0 lda $9,$ptr br 1f 0: stq $1,0($9) jsr $26,($27) 1: ldq $1,0($9) ldq $27,8($1) addq $1,8,$1 bne $27,0b 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 $object,@object .align 3 $object: .zero 48 .size $object, 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 $17,$object jsr $26,__register_frame_info ldq $26,0($30) 0: lda $30,16($30) ret .end __do_frame_setup # # Remove our frame info. # .align 3 .ent __do_frame_takedown __do_frame_takedown: ldgp $29,0($27) lda $30,-16($30) .frame $30,16,$26,0 stq $26,0($30) .mask 0x4000000,-16 .prologue 1 lda $1,__deregister_frame_info beq $1,0f lda $16,__EH_FRAME_BEGIN__ jsr $26,__deregister_frame_info ldq $26,0($30) 0: lda $30,16($30) ret .end __do_frame_takedown .weak __register_frame_info .weak __deregister_frame_info