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1/* Startup code for Alpha/ELF.
2 Copyright (C) 1993-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Richard Henderson <rth@tamu.edu>
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 In addition to the permissions in the GNU Lesser General Public
12 License, the Free Software Foundation gives you unlimited
13 permission to link the compiled version of this file with other
14 programs, and to distribute those programs without any restriction
15 coming from the use of this file. (The GNU Lesser General Public
16 License restrictions do apply in other respects; for example, they
17 cover modification of the file, and distribution when not linked
18 into another program.)
19
20 Note that people who make modified versions of this file are not
21 obligated to grant this special exception for their modified
22 versions; it is their choice whether to do so. The GNU Lesser
23 General Public License gives permission to release a modified
24 version without this exception; this exception also makes it
25 possible to release a modified version which carries forward this
26 exception.
27
28 The GNU C Library is distributed in the hope that it will be useful,
29 but WITHOUT ANY WARRANTY; without even the implied warranty of
30 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
31 Lesser General Public License for more details.
32
33 You should have received a copy of the GNU Lesser General Public
34 License along with the GNU C Library. If not, see
35 <http://www.gnu.org/licenses/>. */
36
37#include <sysdep.h>
38
39 .text
40 .align 3
41 .globl _start
42 .ent _start, 0
43 .type _start,@function
44_start:
45 .frame $15, 0, $15
46 br gp, 1f
471: ldgp gp, 0(gp)
48 subq sp, 16, sp
49 mov 0, $15
50 .prologue 0
51
52 /* Load address of the user's main function. */
53 lda a0, main
54
55 ldl a1, 16(sp) /* get argc */
56 lda a2, 24(sp) /* get argv */
57
58 /* Load address of our own entry points to .fini and .init. */
59 lda a3, __libc_csu_init
60 lda a4, __libc_csu_fini
61
62 /* Store address of the shared library termination function. */
63 mov v0, a5
64
65 /* Provide the highest stack address to the user code. */
66 stq sp, 0(sp)
67
68 /* Call the user's main function, and exit with its value.
69 But let the libc call main. */
70 jsr ra, __libc_start_main
71
72 /* Die very horribly if exit returns. Call_pal hlt is callable from
73 kernel mode only; this will result in an illegal instruction trap. */
74 call_pal 0
75 .end _start
76
77/* For ECOFF backwards compatibility. */
78weak_alias (_start, __start)
79
80/* Define a symbol for the first piece of initialized data. */
81 .data
82 .globl __data_start
83__data_start:
84 .weak data_start
85 data_start = __data_start
86

Warning: That file was not part of the compilation database. It may have many parsing errors.