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Diffstat (limited to 'sysdeps/alpha/elf/crtbegin.S')
| -rw-r--r-- | sysdeps/alpha/elf/crtbegin.S | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/sysdeps/alpha/elf/crtbegin.S b/sysdeps/alpha/elf/crtbegin.S new file mode 100644 index 0000000000..f75673e35f --- /dev/null +++ b/sysdeps/alpha/elf/crtbegin.S @@ -0,0 +1,91 @@ +/* Copyright (C) 1996 Free Software Foundation, Inc. + Contributed by Richard Henderson (rth@tamu.edu) + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + + +/* + * 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 + + +/* + * 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 $gp,1f +1: ldgp $gp,0($gp) + 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 thense SIGILL. */ + .align 3 + +/* + * Invoke our destructors in order. + */ + +.text + + .align 3 + .ent __do_global_dtors_aux + +__do_global_dtors_aux: + .frame $sp,16,$26,0 + /* GP already loaded in .fini */ + lda $sp,-16($sp) + stq $9,8($sp) + stq $26,0($sp) + .mask (1<<26)|(1<<9), -16 + .prologue 1 + + lda $9,__DTOR_LIST__ + br 1f +0: jsr $26,($27) +1: ldq $27,8($9) + addq $9,8,$9 + bne $27,0b + + ldq $26,0($sp) + ldq $9,8($sp) + lda $sp,16($sp) + ret + + .end __do_global_dtors_aux |