Warning: That file was not part of the compilation database. It may have many parsing errors.
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/generic/sysdep.h> |
23 | #include <tls.h> |
24 | |
25 | #undef SYS_ify |
26 | #define SYS_ify(syscall_name) __NR_##syscall_name |
27 | |
28 | #if __WORDSIZE == 32 |
29 | |
30 | /* Workarounds for generic code needing to handle 64-bit time_t. */ |
31 | |
32 | /* Fix sysdeps/unix/sysv/linux/clock_getcpuclockid.c. */ |
33 | #define __NR_clock_getres __NR_clock_getres_time64 |
34 | /* Fix sysdeps/nptl/lowlevellock-futex.h. */ |
35 | #define __NR_futex __NR_futex_time64 |
36 | /* Fix sysdeps/unix/sysv/linux/pause.c. */ |
37 | #define __NR_ppoll __NR_ppoll_time64 |
38 | /* Fix sysdeps/unix/sysv/linux/select.c. */ |
39 | #define __NR_pselect6 __NR_pselect6_time64 |
40 | /* Fix sysdeps/unix/sysv/linux/recvmmsg.c. */ |
41 | #define __NR_recvmmsg __NR_recvmmsg_time64 |
42 | /* Fix sysdeps/unix/sysv/linux/sigtimedwait.c. */ |
43 | #define __NR_rt_sigtimedwait __NR_rt_sigtimedwait_time64 |
44 | /* Fix sysdeps/unix/sysv/linux/semtimedop.c. */ |
45 | #define __NR_semtimedop __NR_semtimedop_time64 |
46 | /* Hack sysdeps/unix/sysv/linux/generic/utimes.c. */ |
47 | #define __NR_utimensat __NR_utimensat_time64 |
48 | |
49 | #endif /* __WORDSIZE == 32 */ |
50 | |
51 | #ifdef __ASSEMBLER__ |
52 | |
53 | # include <sys/asm.h> |
54 | |
55 | # define ENTRY(name) LEAF(name) |
56 | |
57 | # define L(label) .L ## label |
58 | |
59 | /* Performs a system call, handling errors by setting errno. Linux indicates |
60 | errors by setting a0 to a value between -1 and -4095. */ |
61 | # undef PSEUDO |
62 | # define PSEUDO(name, syscall_name, args) \ |
63 | .text; \ |
64 | .align 2; \ |
65 | ENTRY (name); \ |
66 | li a7, SYS_ify (syscall_name); \ |
67 | scall; \ |
68 | li a7, -4096; \ |
69 | bgtu a0, a7, .Lsyscall_error ## name; |
70 | |
71 | # undef PSEUDO_END |
72 | # define PSEUDO_END(sym) \ |
73 | SYSCALL_ERROR_HANDLER (sym) \ |
74 | ret; \ |
75 | END (sym) |
76 | |
77 | # if !IS_IN (libc) |
78 | # if RTLD_PRIVATE_ERRNO |
79 | # define SYSCALL_ERROR_HANDLER(name) \ |
80 | .Lsyscall_error ## name: \ |
81 | li t1, -4096; \ |
82 | neg a0, a0; \ |
83 | sw a0, rtld_errno, t1; \ |
84 | li a0, -1; |
85 | # elif defined (__PIC__) |
86 | # define SYSCALL_ERROR_HANDLER(name) \ |
87 | .Lsyscall_error ## name: \ |
88 | la.tls.ie t1, errno; \ |
89 | add t1, t1, tp; \ |
90 | neg a0, a0; \ |
91 | sw a0, 0(t1); \ |
92 | li a0, -1; |
93 | # else |
94 | # define SYSCALL_ERROR_HANDLER(name) \ |
95 | .Lsyscall_error ## name: \ |
96 | lui t1, %tprel_hi(errno); \ |
97 | add t1, t1, tp, %tprel_add(errno); \ |
98 | neg a0, a0; \ |
99 | sw a0, %tprel_lo(errno)(t1); \ |
100 | li a0, -1; |
101 | # endif |
102 | # else |
103 | # define SYSCALL_ERROR_HANDLER(name) \ |
104 | .Lsyscall_error ## name: \ |
105 | j __syscall_error; |
106 | # endif |
107 | |
108 | /* Performs a system call, not setting errno. */ |
109 | # undef PSEUDO_NEORRNO |
110 | # define PSEUDO_NOERRNO(name, syscall_name, args) \ |
111 | .align 2; \ |
112 | ENTRY (name); \ |
113 | li a7, SYS_ify (syscall_name); \ |
114 | scall; |
115 | |
116 | # undef PSEUDO_END_NOERRNO |
117 | # define PSEUDO_END_NOERRNO(name) \ |
118 | END (name) |
119 | |
120 | # undef ret_NOERRNO |
121 | # define ret_NOERRNO ret |
122 | |
123 | /* Perfroms a system call, returning the error code. */ |
124 | # undef PSEUDO_ERRVAL |
125 | # define PSEUDO_ERRVAL(name, syscall_name, args) \ |
126 | PSEUDO_NOERRNO (name, syscall_name, args) \ |
127 | neg a0, a0; |
128 | |
129 | # undef PSEUDO_END_ERRVAL |
130 | # define PSEUDO_END_ERRVAL(name) \ |
131 | END (name) |
132 | |
133 | # undef ret_ERRVAL |
134 | # define ret_ERRVAL ret |
135 | |
136 | #else /* !__ASSEMBLER__ */ |
137 | |
138 | # if __WORDSIZE == 64 |
139 | # define VDSO_NAME "LINUX_4.15" |
140 | # define VDSO_HASH 182943605 |
141 | |
142 | /* List of system calls which are supported as vsyscalls only |
143 | for RV64. */ |
144 | # define HAVE_CLOCK_GETRES64_VSYSCALL "__vdso_clock_getres" |
145 | # define HAVE_CLOCK_GETTIME64_VSYSCALL "__vdso_clock_gettime" |
146 | # define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_gettimeofday" |
147 | # else |
148 | # define VDSO_NAME "LINUX_5.4" |
149 | # define VDSO_HASH 61765876 |
150 | |
151 | /* RV32 does not support the gettime VDSO syscalls. */ |
152 | # endif |
153 | |
154 | /* List of system calls which are supported as vsyscalls (for RV32 and |
155 | RV64). */ |
156 | # define HAVE_GETCPU_VSYSCALL "__vdso_getcpu" |
157 | |
158 | # undef HAVE_INTERNAL_BRK_ADDR_SYMBOL |
159 | # define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1 |
160 | |
161 | # define INTERNAL_SYSCALL(name, nr, args...) \ |
162 | internal_syscall##nr (SYS_ify (name), args) |
163 | |
164 | # define INTERNAL_SYSCALL_NCS(number, nr, args...) \ |
165 | internal_syscall##nr (number, args) |
166 | |
167 | # define internal_syscall0(number, dummy...) \ |
168 | ({ \ |
169 | long int _sys_result; \ |
170 | \ |
171 | { \ |
172 | register long int __a7 asm ("a7") = number; \ |
173 | register long int __a0 asm ("a0"); \ |
174 | __asm__ volatile ( \ |
175 | "scall\n\t" \ |
176 | : "=r" (__a0) \ |
177 | : "r" (__a7) \ |
178 | : __SYSCALL_CLOBBERS); \ |
179 | _sys_result = __a0; \ |
180 | } \ |
181 | _sys_result; \ |
182 | }) |
183 | |
184 | # define internal_syscall1(number, arg0) \ |
185 | ({ \ |
186 | long int _sys_result; \ |
187 | long int _arg0 = (long int) (arg0); \ |
188 | \ |
189 | { \ |
190 | register long int __a7 asm ("a7") = number; \ |
191 | register long int __a0 asm ("a0") = _arg0; \ |
192 | __asm__ volatile ( \ |
193 | "scall\n\t" \ |
194 | : "+r" (__a0) \ |
195 | : "r" (__a7) \ |
196 | : __SYSCALL_CLOBBERS); \ |
197 | _sys_result = __a0; \ |
198 | } \ |
199 | _sys_result; \ |
200 | }) |
201 | |
202 | # define internal_syscall2(number, arg0, arg1) \ |
203 | ({ \ |
204 | long int _sys_result; \ |
205 | long int _arg0 = (long int) (arg0); \ |
206 | long int _arg1 = (long int) (arg1); \ |
207 | \ |
208 | { \ |
209 | register long int __a7 asm ("a7") = number; \ |
210 | register long int __a0 asm ("a0") = _arg0; \ |
211 | register long int __a1 asm ("a1") = _arg1; \ |
212 | __asm__ volatile ( \ |
213 | "scall\n\t" \ |
214 | : "+r" (__a0) \ |
215 | : "r" (__a7), "r" (__a1) \ |
216 | : __SYSCALL_CLOBBERS); \ |
217 | _sys_result = __a0; \ |
218 | } \ |
219 | _sys_result; \ |
220 | }) |
221 | |
222 | # define internal_syscall3(number, arg0, arg1, arg2) \ |
223 | ({ \ |
224 | long int _sys_result; \ |
225 | long int _arg0 = (long int) (arg0); \ |
226 | long int _arg1 = (long int) (arg1); \ |
227 | long int _arg2 = (long int) (arg2); \ |
228 | \ |
229 | { \ |
230 | register long int __a7 asm ("a7") = number; \ |
231 | register long int __a0 asm ("a0") = _arg0; \ |
232 | register long int __a1 asm ("a1") = _arg1; \ |
233 | register long int __a2 asm ("a2") = _arg2; \ |
234 | __asm__ volatile ( \ |
235 | "scall\n\t" \ |
236 | : "+r" (__a0) \ |
237 | : "r" (__a7), "r" (__a1), "r" (__a2) \ |
238 | : __SYSCALL_CLOBBERS); \ |
239 | _sys_result = __a0; \ |
240 | } \ |
241 | _sys_result; \ |
242 | }) |
243 | |
244 | # define internal_syscall4(number, arg0, arg1, arg2, arg3) \ |
245 | ({ \ |
246 | long int _sys_result; \ |
247 | long int _arg0 = (long int) (arg0); \ |
248 | long int _arg1 = (long int) (arg1); \ |
249 | long int _arg2 = (long int) (arg2); \ |
250 | long int _arg3 = (long int) (arg3); \ |
251 | \ |
252 | { \ |
253 | register long int __a7 asm ("a7") = number; \ |
254 | register long int __a0 asm ("a0") = _arg0; \ |
255 | register long int __a1 asm ("a1") = _arg1; \ |
256 | register long int __a2 asm ("a2") = _arg2; \ |
257 | register long int __a3 asm ("a3") = _arg3; \ |
258 | __asm__ volatile ( \ |
259 | "scall\n\t" \ |
260 | : "+r" (__a0) \ |
261 | : "r" (__a7), "r" (__a1), "r" (__a2), "r" (__a3) \ |
262 | : __SYSCALL_CLOBBERS); \ |
263 | _sys_result = __a0; \ |
264 | } \ |
265 | _sys_result; \ |
266 | }) |
267 | |
268 | # define internal_syscall5(number, arg0, arg1, arg2, arg3, arg4) \ |
269 | ({ \ |
270 | long int _sys_result; \ |
271 | long int _arg0 = (long int) (arg0); \ |
272 | long int _arg1 = (long int) (arg1); \ |
273 | long int _arg2 = (long int) (arg2); \ |
274 | long int _arg3 = (long int) (arg3); \ |
275 | long int _arg4 = (long int) (arg4); \ |
276 | \ |
277 | { \ |
278 | register long int __a7 asm ("a7") = number; \ |
279 | register long int __a0 asm ("a0") = _arg0; \ |
280 | register long int __a1 asm ("a1") = _arg1; \ |
281 | register long int __a2 asm ("a2") = _arg2; \ |
282 | register long int __a3 asm ("a3") = _arg3; \ |
283 | register long int __a4 asm ("a4") = _arg4; \ |
284 | __asm__ volatile ( \ |
285 | "scall\n\t" \ |
286 | : "+r" (__a0) \ |
287 | : "r" (__a7), "r"(__a1), "r"(__a2), "r"(__a3), "r" (__a4) \ |
288 | : __SYSCALL_CLOBBERS); \ |
289 | _sys_result = __a0; \ |
290 | } \ |
291 | _sys_result; \ |
292 | }) |
293 | |
294 | # define internal_syscall6(number, arg0, arg1, arg2, arg3, arg4, arg5) \ |
295 | ({ \ |
296 | long int _sys_result; \ |
297 | long int _arg0 = (long int) (arg0); \ |
298 | long int _arg1 = (long int) (arg1); \ |
299 | long int _arg2 = (long int) (arg2); \ |
300 | long int _arg3 = (long int) (arg3); \ |
301 | long int _arg4 = (long int) (arg4); \ |
302 | long int _arg5 = (long int) (arg5); \ |
303 | \ |
304 | { \ |
305 | register long int __a7 asm ("a7") = number; \ |
306 | register long int __a0 asm ("a0") = _arg0; \ |
307 | register long int __a1 asm ("a1") = _arg1; \ |
308 | register long int __a2 asm ("a2") = _arg2; \ |
309 | register long int __a3 asm ("a3") = _arg3; \ |
310 | register long int __a4 asm ("a4") = _arg4; \ |
311 | register long int __a5 asm ("a5") = _arg5; \ |
312 | __asm__ volatile ( \ |
313 | "scall\n\t" \ |
314 | : "+r" (__a0) \ |
315 | : "r" (__a7), "r" (__a1), "r" (__a2), "r" (__a3), \ |
316 | "r" (__a4), "r" (__a5) \ |
317 | : __SYSCALL_CLOBBERS); \ |
318 | _sys_result = __a0; \ |
319 | } \ |
320 | _sys_result; \ |
321 | }) |
322 | |
323 | # define internal_syscall7(number, arg0, arg1, arg2, arg3, arg4, arg5, arg6) \ |
324 | ({ \ |
325 | long int _sys_result; \ |
326 | long int _arg0 = (long int) (arg0); \ |
327 | long int _arg1 = (long int) (arg1); \ |
328 | long int _arg2 = (long int) (arg2); \ |
329 | long int _arg3 = (long int) (arg3); \ |
330 | long int _arg4 = (long int) (arg4); \ |
331 | long int _arg5 = (long int) (arg5); \ |
332 | long int _arg6 = (long int) (arg6); \ |
333 | \ |
334 | { \ |
335 | register long int __a7 asm ("a7") = number; \ |
336 | register long int __a0 asm ("a0") = _arg0; \ |
337 | register long int __a1 asm ("a1") = _arg1; \ |
338 | register long int __a2 asm ("a2") = _arg2; \ |
339 | register long int __a3 asm ("a3") = _arg3; \ |
340 | register long int __a4 asm ("a4") = _arg4; \ |
341 | register long int __a5 asm ("a5") = _arg5; \ |
342 | register long int __a6 asm ("a6") = _arg6; \ |
343 | __asm__ volatile ( \ |
344 | "scall\n\t" \ |
345 | : "+r" (__a0) \ |
346 | : "r" (__a7), "r" (__a1), "r" (__a2), "r" (__a3), \ |
347 | "r" (__a4), "r" (__a5), "r" (__a6) \ |
348 | : __SYSCALL_CLOBBERS); \ |
349 | _sys_result = __a0; \ |
350 | } \ |
351 | _sys_result; \ |
352 | }) |
353 | |
354 | # define __SYSCALL_CLOBBERS "memory" |
355 | |
356 | extern long int __syscall_error (long int neg_errno); |
357 | |
358 | #endif /* ! __ASSEMBLER__ */ |
359 | |
360 | /* Pointer mangling is not supported. */ |
361 | #define PTR_MANGLE(var) (void) (var) |
362 | #define PTR_DEMANGLE(var) (void) (var) |
363 | |
364 | #endif /* linux/riscv/sysdep.h */ |
365 |
Warning: That file was not part of the compilation database. It may have many parsing errors.