source: trunk/libs/newlib/src/libgloss/arc/gcrt0.S @ 546

Last change on this file since 546 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 2.4 KB
Line 
1/*
2   Copyright (c) 2016, Synopsys, Inc. All rights reserved.
3
4   Redistribution and use in source and binary forms, with or without
5   modification, are permitted provided that the following conditions are met:
6
7   1) Redistributions of source code must retain the above copyright notice,
8   this list of conditions and the following disclaimer.
9
10   2) Redistributions in binary form must reproduce the above copyright notice,
11   this list of conditions and the following disclaimer in the documentation
12   and/or other materials provided with the distribution.
13
14   3) Neither the name of the Synopsys, Inc., nor the names of its contributors
15   may be used to endorse or promote products derived from this software
16   without specific prior written permission.
17
18   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28   POSSIBILITY OF SUCH DAMAGE.
29*/
30#define PROFILE_SUPPORT 1
31
32#include "crt0.S"
33
34        .global __mcount
35        .type   __mcount, @function
36        .align 4
37__mcount:
38        ;; When a function is compiled for profiling, gcc will insert
39        ;; a call to __mcount without checking for resources.  Hence,
40        ;; we need save all of the argument registers and temp registers,
41        ;; extract the address of <func_name>, and call the _mcount_internal
42        ;; to do the real work.  Finally, restore all the argument registers
43        ;; before returning.
44        push_s  blink
45        push_s  r0
46        push_s  r1
47        push_s  r2
48        push_s  r3
49#ifndef __ARC_RF16__
50        push    r4
51        push    r5
52        push    r6
53        push    r7
54        push    r8
55        push    r9
56#endif
57        push    r10
58        push    r11
59        push    r12
60        mov     r0,blink
61        jl      @_mcount_internal
62        pop     r12
63        pop     r11
64        pop     r10
65#ifndef __ARC_RF16__
66        pop     r9
67        pop     r8
68        pop     r7
69        pop     r6
70        pop     r5
71        pop     r4
72#endif
73        pop_s   r3
74        pop_s   r2
75        pop_s   r1
76        pop_s   r0
77        pop_s   blink
78        j_s     [blink]
79        .size __mcount, . - __mcount
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