1/* Set flags signalling availability of kernel features based on given
 2   kernel version number.  SPARC version.
 3   Copyright (C) 1999-2025 Free Software Foundation, Inc.
 4   This file is part of the GNU C Library.
 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   The GNU C Library is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   Lesser General Public License for more details.
15
16   You should have received a copy of the GNU Lesser General Public
17   License along with the GNU C Library; if not, see
18   <https://www.gnu.org/licenses/>.  */
19
20#include_next <kernel-features.h>
21
22/* 32-bit SPARC kernels do not support
23   futex_atomic_cmpxchg_inatomic.  */
24#if !defined __arch64__ && !defined __sparc_v9__
25# undef __ASSUME_SET_ROBUST_LIST
26#endif
27
28/* These syscalls were added for 32-bit in 4.4 (but present for 64-bit
29   in all supported kernel versions); the architecture-independent
30   kernel-features.h assumes some of them to be present by default.
31   getpeername and getsockname syscalls were also added for 32-bit in
32   4.4, but only for 32-bit kernels, not in the compat syscall table
33   for 64-bit kernels.  */
34#if !defined __arch64__ && __LINUX_KERNEL_VERSION < 0x040400
35# undef __ASSUME_SENDMSG_SYSCALL
36# undef __ASSUME_RECVMSG_SYSCALL
37# undef __ASSUME_ACCEPT_SYSCALL
38# undef __ASSUME_CONNECT_SYSCALL
39# undef __ASSUME_RECVFROM_SYSCALL
40# undef __ASSUME_SENDTO_SYSCALL
41# undef __ASSUME_GETSOCKOPT_SYSCALL
42# undef __ASSUME_SETSOCKOPT_SYSCALL
43#endif
44
45/* There syscalls were added for 32-bit in compat syscall table only
46   in 4.20 (but present for 64-bit in all supported kernel versions).  */
47#if !defined __arch64__ && __LINUX_KERNEL_VERSION < 0x041400
48# undef __ASSUME_GETSOCKNAME_SYSCALL
49# undef __ASSUME_GETPEERNAME_SYSCALL
50#endif
51
52/* These syscalls were added for both 32-bit and 64-bit in 4.4.  */
53#if __LINUX_KERNEL_VERSION < 0x040400
54# undef __ASSUME_BIND_SYSCALL
55# undef __ASSUME_LISTEN_SYSCALL
56#endif
57
58#ifdef __arch64__
59/* sparc64 defines __NR_pause,  however it is not supported (ENOSYS).
60   Undefine so pause.c can use a correct alternative.  */
61# undef __NR_pause
62#endif
63
64/* sparc only supports ipc syscall before 5.1.  */
65#if __LINUX_KERNEL_VERSION < 0x050100
66# undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
67# if !defined __arch64__
68#  undef __ASSUME_SYSVIPC_DEFAULT_IPC_64
69# endif
70#endif
71
72/* Support for the renameat2 syscall was added in 3.16.  */
73#if __LINUX_KERNEL_VERSION < 0x031000
74# undef __ASSUME_RENAMEAT2
75#endif
76
77/* SPARC kernel Kconfig does not define CONFIG_CLONE_BACKWARDS, however it
78   has the same ABI as if it did, implemented by sparc-specific code
79   (sparc_do_fork).
80
81   It also has a unique return value convention:
82
83     Parent -->  %o0 == child's  pid, %o1 == 0
84     Child  -->  %o0 == parent's pid, %o1 == 1
85
86   Which required a special macro to correct issue the syscall
87   (INLINE_CLONE_SYSCALL).  */
88#undef __ASSUME_CLONE_DEFAULT
89#define __ASSUME_CLONE_BACKWARDS	1
90
91/* sparc does not provide clone3.  */
92#undef __ASSUME_CLONE3
93#define __ASSUME_CLONE3 0