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1/* Copyright (C) 1993-2019 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Brendan Kehoe (brendan@zen.org).
4
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.
9
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.
14
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 <http://www.gnu.org/licenses/>. */
18
19#include <sysdep.h>
20#include <features.h>
21
22#if defined(PIC)
23 /* Put this at the end of libc's text segment so that all of
24 the direct branches from the syscalls are forward, and
25 thus predicted not taken. */
26 .section .text.last, "ax", @progbits
27#else
28 .text
29#endif
30
31#if IS_IN (libc)
32# define SYSCALL_ERROR_ERRNO __libc_errno
33#else
34# define SYSCALL_ERROR_ERRNO errno
35#endif
36
37 .align 4
38 .globl __syscall_error
39 .ent __syscall_error
40__syscall_error:
41 /* When building a shared library, we branch here without having
42 loaded the GP. Nor, since it was a direct branch, have we
43 loaded PV with our address.
44
45 When building a static library, we tail call here from another
46 object file, possibly with a different GP, and must return with
47 the GP of our caller in place so that linker relaxation works.
48
49 Both issues are solved by computing the GP into T1 instead of
50 clobbering the traditional GP register. */
51 .prologue 0
52 mov v0, t0
53 br t1, 1f
541: ldah t1, 0(t1) !gpdisp!1
55 call_pal PAL_rduniq
56
57 lda t1, 0(t1) !gpdisp!1
58 ldq t1, SYSCALL_ERROR_ERRNO(t1) !gottprel
59 addq v0, t1, t1
60 lda v0, -1
61
62 stl t0, 0(t1)
63 ret
64
65 .end __syscall_error
66

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