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1/* Syscall definitions, Linux s390 version.
2 Copyright (C) 2019-2025 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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#ifndef __ASSEMBLY__
20
21#undef SYS_ify
22#define SYS_ify(syscall_name) __NR_##syscall_name
23
24#undef INTERNAL_SYSCALL_NCS
25#define INTERNAL_SYSCALL_NCS(no, nr, args...) \
26 ({ \
27 DECLARGS_##nr(args) \
28 register unsigned long int _nr __asm__("1") = (unsigned long int)(no); \
29 register long int _ret __asm__("2"); \
30 __asm__ __volatile__ ( \
31 "svc 0\n\t" \
32 : "=d" (_ret) \
33 : "d" (_nr) ASMFMT_##nr \
34 : "memory" ); \
35 _ret; })
36
37#undef INTERNAL_SYSCALL
38#define INTERNAL_SYSCALL(name, nr, args...) \
39 INTERNAL_SYSCALL_NCS(__NR_##name, nr, args)
40
41#define DECLARGS_0()
42#define DECLARGS_1(arg1) \
43 register unsigned long int gpr2 __asm__ ("2") = (unsigned long int)(arg1);
44#define DECLARGS_2(arg1, arg2) \
45 DECLARGS_1(arg1) \
46 register unsigned long int gpr3 __asm__ ("3") = (unsigned long int)(arg2);
47#define DECLARGS_3(arg1, arg2, arg3) \
48 DECLARGS_2(arg1, arg2) \
49 register unsigned long int gpr4 __asm__ ("4") = (unsigned long int)(arg3);
50#define DECLARGS_4(arg1, arg2, arg3, arg4) \
51 DECLARGS_3(arg1, arg2, arg3) \
52 register unsigned long int gpr5 __asm__ ("5") = (unsigned long int)(arg4);
53#define DECLARGS_5(arg1, arg2, arg3, arg4, arg5) \
54 DECLARGS_4(arg1, arg2, arg3, arg4) \
55 register unsigned long int gpr6 __asm__ ("6") = (unsigned long int)(arg5);
56#define DECLARGS_6(arg1, arg2, arg3, arg4, arg5, arg6) \
57 DECLARGS_5(arg1, arg2, arg3, arg4, arg5) \
58 register unsigned long int gpr7 __asm__ ("7") = (unsigned long int)(arg6);
59
60#define ASMFMT_0
61#define ASMFMT_1 , "0" (gpr2)
62#define ASMFMT_2 , "0" (gpr2), "d" (gpr3)
63#define ASMFMT_3 , "0" (gpr2), "d" (gpr3), "d" (gpr4)
64#define ASMFMT_4 , "0" (gpr2), "d" (gpr3), "d" (gpr4), "d" (gpr5)
65#define ASMFMT_5 , "0" (gpr2), "d" (gpr3), "d" (gpr4), "d" (gpr5), "d" (gpr6)
66#define ASMFMT_6 , "0" (gpr2), "d" (gpr3), "d" (gpr4), "d" (gpr5), "d" (gpr6), "d" (gpr7)
67
68#define VDSO_NAME "LINUX_2.6.29"
69#define VDSO_HASH 123718585
70
71/* List of system calls which are supported as vsyscalls. */
72#ifdef __s390x__
73#define HAVE_CLOCK_GETRES64_VSYSCALL "__kernel_clock_getres"
74#define HAVE_CLOCK_GETTIME64_VSYSCALL "__kernel_clock_gettime"
75#define HAVE_GETRANDOM_VSYSCALL "__kernel_getrandom"
76#else
77#define HAVE_CLOCK_GETRES_VSYSCALL "__kernel_clock_getres"
78#define HAVE_CLOCK_GETTIME_VSYSCALL "__kernel_clock_gettime"
79#endif
80#define HAVE_GETTIMEOFDAY_VSYSCALL "__kernel_gettimeofday"
81#define HAVE_GETCPU_VSYSCALL "__kernel_getcpu"
82
83#define HAVE_CLONE3_WRAPPER 1
84#endif