Subversion Repositories openrisc_me

/* Copyright (C) 2001, 2002, 2009 Free Software Foundation, Inc.
   Contributed by Hans-Peter Nilsson <hp@bitrange.com>

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 3, or (at your option) any
later version.

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.

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/>.  */

% This must be the last file on the link-line, allocating global registers
% from the top.

% Register $254 is the stack-pointer.
sp GREG

% Register $253 is frame-pointer.  It's not supposed to be used in most
% functions.
fp GREG

% $252 is the static chain register; nested functions receive the
% context of the surrounding function through a pointer passed in this
% register.
static_chain GREG
struct_value_reg GREG

% These registers are used to pass state at an exceptional return (C++).
eh_state_3 GREG
eh_state_2 GREG
eh_state_1 GREG
eh_state_0 GREG

#ifdef __MMIX_ABI_GNU__

% Allocate global registers used by the GNU ABI.
gnu_parm_reg_16 GREG
gnu_parm_reg_15 GREG
gnu_parm_reg_14 GREG
gnu_parm_reg_13 GREG
gnu_parm_reg_12 GREG
gnu_parm_reg_11 GREG
gnu_parm_reg_10 GREG
gnu_parm_reg_9 GREG
gnu_parm_reg_8 GREG
gnu_parm_reg_7 GREG
gnu_parm_reg_6 GREG
gnu_parm_reg_5 GREG
gnu_parm_reg_4 GREG
gnu_parm_reg_3 GREG
gnu_parm_reg_2 GREG
gnu_parm_reg_1 GREG

#endif /* __MMIX_ABI_GNU__ */

% Provide last part of _init and _fini.

% The return address is stored in the topmost stored register in the
% register-stack.  We ignore the current value in rJ.  It is probably
% garbage because each fragment of _init and _fini may have their own idea
% of the current stack frame, if they're cut out from a "real" function
% like in gcc/crtstuff.c.

        .section .init,"ax",@progbits
        GETA    $255,0F
        PUT     rJ,$255
        POP     0,0
0H      PUT     rJ,$0
        POP     0,0
        
        .section .fini,"ax",@progbits
        GETA    $255,0F
        PUT     rJ,$255
        POP     0,0
0H      PUT     rJ,$0
        POP     0,0