?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux: Remove unused generic Makefile
[glibc.git] / sysdeps / unix / sysv / linux / riscv / sysdep.h
blob4af5fe5dbcb199d2f44c705699b3268df5ada2bf
1 /* Assembly macros for RISC-V.
2 Copyright (C) 2011-2018
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 <https://www.gnu.org/licenses/>. */
18
19 #ifndef _LINUX_RISCV_SYSDEP_H
20 #define _LINUX_RISCV_SYSDEP_H 1
21
22 #include <sysdeps/unix/sysv/linux/sysdep.h>
23 #include <sysdeps/unix/sysdep.h>
24 #include <tls.h>
25
26 #undef SYS_ify
27 #define SYS_ify(syscall_name) __NR_##syscall_name
28
29 #if __WORDSIZE == 32
30
31 /* Workarounds for generic code needing to handle 64-bit time_t. */
32
33 /* Fix sysdeps/unix/sysv/linux/clock_getcpuclockid.c. */
34 #define __NR_clock_getres __NR_clock_getres_time64
35 /* Fix sysdeps/nptl/lowlevellock-futex.h. */
36 #define __NR_futex __NR_futex_time64
37 /* Fix sysdeps/unix/sysv/linux/pause.c. */
38 #define __NR_ppoll __NR_ppoll_time64
39 /* Fix sysdeps/unix/sysv/linux/select.c. */
40 #define __NR_pselect6 __NR_pselect6_time64
41 /* Fix sysdeps/unix/sysv/linux/recvmmsg.c. */
42 #define __NR_recvmmsg __NR_recvmmsg_time64
43 /* Fix sysdeps/unix/sysv/linux/sigtimedwait.c. */
44 #define __NR_rt_sigtimedwait __NR_rt_sigtimedwait_time64
45 /* Fix sysdeps/unix/sysv/linux/semtimedop.c. */
46 #define __NR_semtimedop __NR_semtimedop_time64
47 /* Hack sysdeps/unix/sysv/linux/generic/utimes.c. */
48 #define __NR_utimensat __NR_utimensat_time64
49
50 #endif /* __WORDSIZE == 32 */
51
52 #ifdef __ASSEMBLER__
53
54 # include <sys/asm.h>
55
56 # define ENTRY(name) LEAF(name)
57
58 # define L(label) .L ## label
59
60 /* Performs a system call, handling errors by setting errno. Linux indicates
61 errors by setting a0 to a value between -1 and -4095. */
62 # undef PSEUDO
63 # define PSEUDO(name, syscall_name, args) \
64 .text; \
65 .align 2; \
66 ENTRY (name); \
67 li a7, SYS_ify (syscall_name); \
68 scall; \
69 li a7, -4096; \
70 bgtu a0, a7, .Lsyscall_error ## name;
71
72 # undef PSEUDO_END
73 # define PSEUDO_END(sym) \
74 SYSCALL_ERROR_HANDLER (sym) \
75 ret; \
76 END (sym)
77
78 # if !IS_IN (libc)
79 # if RTLD_PRIVATE_ERRNO
80 # define SYSCALL_ERROR_HANDLER(name) \
81 .Lsyscall_error ## name: \
82 li t1, -4096; \
83 neg a0, a0; \
84 sw a0, rtld_errno, t1; \
85 li a0, -1;
86 # elif defined (__PIC__)
87 # define SYSCALL_ERROR_HANDLER(name) \
88 .Lsyscall_error ## name: \
89 la.tls.ie t1, errno; \
90 add t1, t1, tp; \
91 neg a0, a0; \
92 sw a0, 0(t1); \
93 li a0, -1;
94 # else
95 # define SYSCALL_ERROR_HANDLER(name) \
96 .Lsyscall_error ## name: \
97 lui t1, %tprel_hi(errno); \
98 add t1, t1, tp, %tprel_add(errno); \
99 neg a0, a0; \
100 sw a0, %tprel_lo(errno)(t1); \
101 li a0, -1;
102 # endif
103 # else
104 # define SYSCALL_ERROR_HANDLER(name) \
105 .Lsyscall_error ## name: \
106 tail __syscall_error;
107 # endif
108
109 /* Performs a system call, not setting errno. */
110 # undef PSEUDO_NEORRNO
111 # define PSEUDO_NOERRNO(name, syscall_name, args) \
112 .align 2; \
113 ENTRY (name); \
114 li a7, SYS_ify (syscall_name); \
115 scall;
116
117 # undef PSEUDO_END_NOERRNO
118 # define PSEUDO_END_NOERRNO(name) \
119 END (name)
120
121 # undef ret_NOERRNO
122 # define ret_NOERRNO ret
123
124 /* Perfroms a system call, returning the error code. */
125 # undef PSEUDO_ERRVAL
126 # define PSEUDO_ERRVAL(name, syscall_name, args) \
127 PSEUDO_NOERRNO (name, syscall_name, args) \
128 neg a0, a0;
129
130 # undef PSEUDO_END_ERRVAL
131 # define PSEUDO_END_ERRVAL(name) \
132 END (name)
133
134 # undef ret_ERRVAL
135 # define ret_ERRVAL ret
136
137 #else /* !__ASSEMBLER__ */
138
139 # if __WORDSIZE == 64
140 # define VDSO_NAME "LINUX_4.15"
141 # define VDSO_HASH 182943605
142
143 /* List of system calls which are supported as vsyscalls only
144 for RV64. */
145 # define HAVE_CLOCK_GETRES64_VSYSCALL "__vdso_clock_getres"
146 # define HAVE_CLOCK_GETTIME64_VSYSCALL "__vdso_clock_gettime"
147 # define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_gettimeofday"
148 # else
149 # define VDSO_NAME "LINUX_5.4"
150 # define VDSO_HASH 61765876
151
152 /* RV32 does not support the gettime VDSO syscalls. */
153 # endif
154
155 /* List of system calls which are supported as vsyscalls (for RV32 and
156 RV64). */
157 # define HAVE_GETCPU_VSYSCALL "__vdso_getcpu"
158
159 # undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
160 # define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
161
162 # define INTERNAL_SYSCALL(name, nr, args...) \
163 internal_syscall##nr (SYS_ify (name), args)
164
165 # define INTERNAL_SYSCALL_NCS(number, nr, args...) \
166 internal_syscall##nr (number, args)
167
168 # define internal_syscall0(number, dummy...) \
169 ({ \
170 long int _sys_result; \
171 \
172 { \
173 register long int __a7 asm ("a7") = number; \
174 register long int __a0 asm ("a0"); \
175 __asm__ volatile ( \
176 "scall\n\t" \
177 : "=r" (__a0) \
178 : "r" (__a7) \
179 : __SYSCALL_CLOBBERS); \
180 _sys_result = __a0; \
181 } \
182 _sys_result; \
183 })
184
185 # define internal_syscall1(number, arg0) \
186 ({ \
187 long int _sys_result; \
188 long int _arg0 = (long int) (arg0); \
189 \
190 { \
191 register long int __a7 asm ("a7") = number; \
192 register long int __a0 asm ("a0") = _arg0; \
193 __asm__ volatile ( \
194 "scall\n\t" \
195 : "+r" (__a0) \
196 : "r" (__a7) \
197 : __SYSCALL_CLOBBERS); \
198 _sys_result = __a0; \
199 } \
200 _sys_result; \
201 })
202
203 # define internal_syscall2(number, arg0, arg1) \
204 ({ \
205 long int _sys_result; \
206 long int _arg0 = (long int) (arg0); \
207 long int _arg1 = (long int) (arg1); \
208 \
209 { \
210 register long int __a7 asm ("a7") = number; \
211 register long int __a0 asm ("a0") = _arg0; \
212 register long int __a1 asm ("a1") = _arg1; \
213 __asm__ volatile ( \
214 "scall\n\t" \
215 : "+r" (__a0) \
216 : "r" (__a7), "r" (__a1) \
217 : __SYSCALL_CLOBBERS); \
218 _sys_result = __a0; \
219 } \
220 _sys_result; \
221 })
222
223 # define internal_syscall3(number, arg0, arg1, arg2) \
224 ({ \
225 long int _sys_result; \
226 long int _arg0 = (long int) (arg0); \
227 long int _arg1 = (long int) (arg1); \
228 long int _arg2 = (long int) (arg2); \
229 \
230 { \
231 register long int __a7 asm ("a7") = number; \
232 register long int __a0 asm ("a0") = _arg0; \
233 register long int __a1 asm ("a1") = _arg1; \
234 register long int __a2 asm ("a2") = _arg2; \
235 __asm__ volatile ( \
236 "scall\n\t" \
237 : "+r" (__a0) \
238 : "r" (__a7), "r" (__a1), "r" (__a2) \
239 : __SYSCALL_CLOBBERS); \
240 _sys_result = __a0; \
241 } \
242 _sys_result; \
243 })
244
245 # define internal_syscall4(number, arg0, arg1, arg2, arg3) \
246 ({ \
247 long int _sys_result; \
248 long int _arg0 = (long int) (arg0); \
249 long int _arg1 = (long int) (arg1); \
250 long int _arg2 = (long int) (arg2); \
251 long int _arg3 = (long int) (arg3); \
252 \
253 { \
254 register long int __a7 asm ("a7") = number; \
255 register long int __a0 asm ("a0") = _arg0; \
256 register long int __a1 asm ("a1") = _arg1; \
257 register long int __a2 asm ("a2") = _arg2; \
258 register long int __a3 asm ("a3") = _arg3; \
259 __asm__ volatile ( \
260 "scall\n\t" \
261 : "+r" (__a0) \
262 : "r" (__a7), "r" (__a1), "r" (__a2), "r" (__a3) \
263 : __SYSCALL_CLOBBERS); \
264 _sys_result = __a0; \
265 } \
266 _sys_result; \
267 })
268
269 # define internal_syscall5(number, arg0, arg1, arg2, arg3, arg4) \
270 ({ \
271 long int _sys_result; \
272 long int _arg0 = (long int) (arg0); \
273 long int _arg1 = (long int) (arg1); \
274 long int _arg2 = (long int) (arg2); \
275 long int _arg3 = (long int) (arg3); \
276 long int _arg4 = (long int) (arg4); \
277 \
278 { \
279 register long int __a7 asm ("a7") = number; \
280 register long int __a0 asm ("a0") = _arg0; \
281 register long int __a1 asm ("a1") = _arg1; \
282 register long int __a2 asm ("a2") = _arg2; \
283 register long int __a3 asm ("a3") = _arg3; \
284 register long int __a4 asm ("a4") = _arg4; \
285 __asm__ volatile ( \
286 "scall\n\t" \
287 : "+r" (__a0) \
288 : "r" (__a7), "r"(__a1), "r"(__a2), "r"(__a3), "r" (__a4) \
289 : __SYSCALL_CLOBBERS); \
290 _sys_result = __a0; \
291 } \
292 _sys_result; \
293 })
294
295 # define internal_syscall6(number, arg0, arg1, arg2, arg3, arg4, arg5) \
296 ({ \
297 long int _sys_result; \
298 long int _arg0 = (long int) (arg0); \
299 long int _arg1 = (long int) (arg1); \
300 long int _arg2 = (long int) (arg2); \
301 long int _arg3 = (long int) (arg3); \
302 long int _arg4 = (long int) (arg4); \
303 long int _arg5 = (long int) (arg5); \
304 \
305 { \
306 register long int __a7 asm ("a7") = number; \
307 register long int __a0 asm ("a0") = _arg0; \
308 register long int __a1 asm ("a1") = _arg1; \
309 register long int __a2 asm ("a2") = _arg2; \
310 register long int __a3 asm ("a3") = _arg3; \
311 register long int __a4 asm ("a4") = _arg4; \
312 register long int __a5 asm ("a5") = _arg5; \
313 __asm__ volatile ( \
314 "scall\n\t" \
315 : "+r" (__a0) \
316 : "r" (__a7), "r" (__a1), "r" (__a2), "r" (__a3), \
317 "r" (__a4), "r" (__a5) \
318 : __SYSCALL_CLOBBERS); \
319 _sys_result = __a0; \
320 } \
321 _sys_result; \
322 })
323
324 # define internal_syscall7(number, arg0, arg1, arg2, arg3, arg4, arg5, arg6) \
325 ({ \
326 long int _sys_result; \
327 long int _arg0 = (long int) (arg0); \
328 long int _arg1 = (long int) (arg1); \
329 long int _arg2 = (long int) (arg2); \
330 long int _arg3 = (long int) (arg3); \
331 long int _arg4 = (long int) (arg4); \
332 long int _arg5 = (long int) (arg5); \
333 long int _arg6 = (long int) (arg6); \
334 \
335 { \
336 register long int __a7 asm ("a7") = number; \
337 register long int __a0 asm ("a0") = _arg0; \
338 register long int __a1 asm ("a1") = _arg1; \
339 register long int __a2 asm ("a2") = _arg2; \
340 register long int __a3 asm ("a3") = _arg3; \
341 register long int __a4 asm ("a4") = _arg4; \
342 register long int __a5 asm ("a5") = _arg5; \
343 register long int __a6 asm ("a6") = _arg6; \
344 __asm__ volatile ( \
345 "scall\n\t" \
346 : "+r" (__a0) \
347 : "r" (__a7), "r" (__a1), "r" (__a2), "r" (__a3), \
348 "r" (__a4), "r" (__a5), "r" (__a6) \
349 : __SYSCALL_CLOBBERS); \
350 _sys_result = __a0; \
351 } \
352 _sys_result; \
353 })
354
355 # define __SYSCALL_CLOBBERS "memory"
356
357 extern long int __syscall_error (long int neg_errno);
358
359 #endif /* ! __ASSEMBLER__ */
360
361 #endif /* linux/riscv/sysdep.h */
sources.redhat.com git mirror of glibc CVS