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1.1 root 1: ! crt1.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
1.1.1.2 ! root 26: ! the Free Software Foundation, 59 Temple Place - Suite 330,
! 27: ! Boston, MA 02111-1307, USA.
1.1 root 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: ! Skip argc words past argv, to env:
72: sll %l0, 2, %o2
73: add %o2, 4, %o2
74: add %l1, %o2, %o2 ! env
75: set _environ, %o3
76: st %o2, [%o3] ! *_environ
77: call main, 4
78: nop
79: call exit, 0
80: nop
81: call _exit, 0
82: nop
83: ! We should never get here.
84:
85: .type _start,#function
86: .size _start,.-_start
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