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aa6ab546 | 1 | /* Startup code for Alpha/ELF. |
688903eb | 2 | Copyright (C) 1993-2018 Free Software Foundation, Inc. |
db31c863 UD |
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 | |
3214b89b AJ |
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. | |
db31c863 | 10 | |
0bec0145 RM |
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 | ||
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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 | |
3214b89b | 31 | Lesser General Public License for more details. |
db31c863 | 32 | |
3214b89b | 33 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff PE |
34 | License along with the GNU C Library. If not, see |
35 | <http://www.gnu.org/licenses/>. */ | |
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36 | |
37 | #include <sysdep.h> | |
38 | ||
6932e444 | 39 | .text |
93b781dd | 40 | .align 3 |
44b8acdd | 41 | .globl _start |
11309adf | 42 | .ent _start, 0 |
13906e12 | 43 | .type _start,@function |
dca26bcb | 44 | _start: |
13e579e4 | 45 | .frame $15, 0, $15 |
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46 | br gp, 1f |
47 | 1: ldgp gp, 0(gp) | |
94cd6191 | 48 | subq sp, 16, sp |
13e579e4 | 49 | mov 0, $15 |
4bb0cd80 | 50 | .prologue 0 |
93b781dd | 51 | |
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52 | /* Load address of the user's main function. */ |
53 | lda a0, main | |
93b781dd | 54 | |
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55 | ldl a1, 16(sp) /* get argc */ |
56 | lda a2, 24(sp) /* get argv */ | |
6932e444 | 57 | |
f709e937 | 58 | /* Load address of our own entry points to .fini and .init. */ |
f8a26bed RM |
59 | lda a3, __libc_csu_init |
60 | lda a4, __libc_csu_fini | |
6932e444 | 61 | |
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62 | /* Store address of the shared library termination function. */ |
63 | mov v0, a5 | |
6932e444 | 64 | |
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65 | /* Provide the highest stack address to the user code. */ |
66 | stq sp, 0(sp) | |
67 | ||
f709e937 | 68 | /* Call the user's main function, and exit with its value. |
94cd6191 | 69 | But let the libc call main. */ |
f709e937 | 70 | jsr ra, __libc_start_main |
11309adf | 71 | |
93b781dd RM |
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 | |
11309adf UD |
75 | .end _start |
76 | ||
77 | /* For ECOFF backwards compatibility. */ | |
8796ce21 | 78 | weak_alias (_start, __start) |
d284ba97 UD |
79 | |
80 | /* Define a symbol for the first piece of initialized data. */ | |
81 | .data | |
82 | .globl __data_start | |
83 | __data_start: | |
d284ba97 UD |
84 | .weak data_start |
85 | data_start = __data_start |