1! gcrt1.s for solaris 2.0.
2
3!   Copyright (C) 1992 Free Software Foundation, Inc.
4!   Written By David Vinayak Henkel-Wallace, June 1992
5! 
6! This file is free software; you can redistribute it and/or modify it
7! under the terms of the GNU General Public License as published by the
8! Free Software Foundation; either version 2, or (at your option) any
9! later version.
10! 
11! In addition to the permissions in the GNU General Public License, the
12! Free Software Foundation gives you unlimited permission to link the
13! compiled version of this file with other programs, and to distribute
14! those programs without any restriction coming from the use of this
15! file.  (The General Public License restrictions do apply in other
16! respects; for example, they cover modification of the file, and
17! distribution when not linked into another program.)
18! 
19! This file is distributed in the hope that it will be useful, but
20! WITHOUT ANY WARRANTY; without even the implied warranty of
21! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
22! General Public License for more details.
23! 
24! You should have received a copy of the GNU General Public License
25! along with this program; see the file COPYING.  If not, write to
26! the Free Software Foundation, 59 Temple Place - Suite 330,
27! Boston, MA 02111-1307, USA.
28! 
29!    As a special exception, if you link this library with files
30!    compiled with GCC to produce an executable, this does not cause
31!    the resulting executable to be covered by the GNU General Public License.
32!    This exception does not however invalidate any other reasons why
33!    the executable file might be covered by the GNU General Public License.
34! 
35
36! This file takes control of the process from the kernel, as specified
37! in section 3 of the SVr4 ABI.
38! This file is the first thing linked into any executable.
39
40	.section	".text"
41	.proc	022
42	.global	_start
43
44_start:
45	mov	0, %fp		! Mark bottom frame pointer
46	ld	[%sp + 64], %l0	! argc
47	add	%sp, 68, %l1	! argv
48
49	! Leave some room for a call.  Sun leaves 32 octets (to sit on
50	! a cache line?) so we do too.
51	sub	%sp, 32, %sp
52
53	! %g1 may contain a function to be registered w/atexit
54	orcc	%g0, %g1, %g0
55	be	.nope
56	mov	%g1, %o0
57	call	atexit
58	nop   
59.nope:
60	! Now make sure constructors and destructors are handled.
61	set	_fini, %o0
62	call	atexit, 1
63	nop
64	call	_init, 0
65	nop
66
67	! We ignore the auxiliary vector; there's no defined way to
68	! access those data anyway.  Instead, go straight to main:
69	mov	%l0, %o0	! argc
70	mov	%l1, %o1	! argv
71	set	___Argv, %o3
72	st	%o1, [%o3]	! *___Argv
73	! Skip argc words past argv, to env:
74	sll	%l0, 2, %o2
75	add	%o2, 4, %o2
76	add	%l1, %o2, %o2	! env
77	set	_environ, %o3
78	st	%o2, [%o3]	! *_environ
79	call	main, 4
80	nop   
81	call	exit, 0
82	nop   
83	call	_exit, 0
84	nop   
85	! We should never get here.
86
87	.type	_start,#function
88	.size	_start,.-_start
89