1/*
2 * Copyright (c) 2011 Aeroflex Gaisler
3 *
4 * BSD license:
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25
26	.text
27	.global _start, main, _end
28
29_start:
30
31#ifndef _FLAT
32	save	%sp, -64, %sp
33#else
34	add	%sp, -72, %sp
35	st	%o7, [%sp+64]
36#endif
37        /* clear the bss */
38
39        sethi %hi(__bss_start),%g2
40        or    %g2,%lo(__bss_start),%g2  ! g2 = start of bss
41        sethi %hi(_end),%g3
42        or    %g3,%lo(_end),%g3         ! g3 = end of bss
43        mov   %g0,%g1                   ! so std has two zeros
44	sub   %g3, %g2, %g3
45zerobss:
46	subcc  %g3, 8, %g3
47	bge,a   zerobss
48	std    %g0,[%g2+%g3]
49
50	set    _end, %o0
51	st     %g0,[%o0]
52
53	call	bdinit2
54	 nop
55
56	call	prelibchook
57	 nop
58
59	call	_call_initcalls        /* atexit uses __atexit lock */
60	 nop
61
62	set	_fini, %o0
63	call	atexit, 1
64	 nop
65
66	call	_init
67	 nop
68
69	call    main
70         nop
71	call _exit
72	nop
73#ifndef _FLAT
74	ret
75	restore
76#else
77	ld	[%sp+64], %o7
78	retl
79	add	%sp, 72, %sp
80#endif
81
82        .seg    "data"
83        .global .bdata
84.bdata:
85        .align  8
86        .global _environ
87_environ:
88        .word   1
89
90
91
92