1 /* Implementation of profiling support. C-SKY ABIV2 version.
2 Copyright (C) 2018-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library. If not, see
17 <https://www.gnu.org/licenses/>. */
21 /* Use an assembly stub with a special ABI. The calling lr has been
22 pushed to the stack (which will be misaligned). We should preserve
23 all registers except ip and pop a word off the stack.
25 NOTE: This assumes mcount_internal does not clobber any non-core
26 (coprocessor) registers. Currently this is true, but may require
27 additional attention in the future.
29 The calling sequence looks something like:
36 /* Don't call mcount when calling mcount... */
53 lrw t0, __mcount_internal@PLT
54 ldr.w t0, (t1, t0 << 0)
57 jsri __mcount_internal