]>
Commit | Line | Data |
---|---|---|
04277e02 | 1 | /* Copyright (C) 1992-2019 Free Software Foundation, Inc. |
c751295f UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995. | |
4 | ARM changes by Philip Blundell, <pjb27@cam.ac.uk>, May 1997. | |
8d2485ed | 5 | |
c751295f | 6 | The GNU C Library is free software; you can redistribute it and/or |
3214b89b AJ |
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. | |
8d2485ed | 10 | |
c751295f UD |
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 | |
3214b89b | 14 | Lesser General Public License for more details. |
8d2485ed | 15 | |
3214b89b | 16 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff | 17 | License along with the GNU C Library. If not, see |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
8d2485ed UD |
19 | |
20 | #ifndef _LINUX_ARM_SYSDEP_H | |
21 | #define _LINUX_ARM_SYSDEP_H 1 | |
22 | ||
23 | /* There is some commonality. */ | |
fb1cf108 | 24 | #include <sysdeps/unix/sysv/linux/sysdep.h> |
16c82ad7 | 25 | #include <sysdeps/unix/arm/sysdep.h> |
8d2485ed | 26 | |
02a9f771 DJ |
27 | /* Defines RTLD_PRIVATE_ERRNO and USE_DL_SYSINFO. */ |
28 | #include <dl-sysdep.h> | |
29 | ||
a68f927f DJ |
30 | #include <tls.h> |
31 | ||
26ed7fb1 JM |
32 | /* In order to get __set_errno() definition in INLINE_SYSCALL. */ |
33 | #ifndef __ASSEMBLER__ | |
34 | #include <errno.h> | |
35 | #endif | |
36 | ||
8d2485ed UD |
37 | /* For Linux we can use the system call table in the header file |
38 | /usr/include/asm/unistd.h | |
39 | of the kernel. But these symbols do not follow the SYS_* syntax | |
40 | so we have to redefine the `SYS_ify' macro here. */ | |
41 | #undef SYS_ify | |
d2099b0d | 42 | #define SYS_ify(syscall_name) (__NR_##syscall_name) |
8d2485ed | 43 | |
c0ddea5a | 44 | #include <bits/hwcap.h> |
4b860fb9 | 45 | |
e0ebc3b2 | 46 | #ifdef __ASSEMBLER__ |
8d2485ed | 47 | |
79fd8731 | 48 | #ifndef ARCH_HAS_HARD_TP |
5232b909 RH |
49 | /* Internal macro calling the linux kernel kuser_get_tls helper. |
50 | Note that in thumb mode, a constant pool break is often out of range, so | |
51 | we always expand the constant inline. */ | |
79fd8731 RH |
52 | # ifdef __thumb2__ |
53 | # define GET_TLS_BODY \ | |
5232b909 RH |
54 | movw r0, #0x0fe0; \ |
55 | movt r0, #0xffff; \ | |
56 | blx r0 | |
79fd8731 RH |
57 | # else |
58 | # define GET_TLS_BODY \ | |
5232b909 RH |
59 | mov r0, #0xffff0fff; /* Point to the high page. */ \ |
60 | mov lr, pc; /* Save our return address. */ \ | |
61 | sub pc, r0, #31 /* Jump to the TLS entry. */ | |
79fd8731 | 62 | # endif |
5232b909 RH |
63 | |
64 | /* Helper to get the TLS base pointer. Save LR in TMP, return in R0, | |
65 | and no other registers clobbered. TMP may be LR itself to indicate | |
66 | that no save is necessary. */ | |
79fd8731 RH |
67 | # undef GET_TLS |
68 | # define GET_TLS(TMP) \ | |
5232b909 RH |
69 | .ifnc TMP, lr; \ |
70 | mov TMP, lr; \ | |
71 | cfi_register (lr, TMP); \ | |
72 | GET_TLS_BODY; \ | |
73 | mov lr, TMP; \ | |
74 | cfi_restore (lr); \ | |
75 | .else; \ | |
76 | GET_TLS_BODY; \ | |
77 | .endif | |
79fd8731 | 78 | #endif /* ARCH_HAS_HARD_TP */ |
5232b909 | 79 | |
8d2485ed UD |
80 | /* Linux uses a negative return value to indicate syscall errors, |
81 | unlike most Unices, which use the condition codes' carry flag. | |
82 | ||
83 | Since version 2.1 the return value of a system call might be | |
84 | negative even if the call succeeded. E.g., the `lseek' system call | |
85 | might return a large offset. Therefore we must not anymore test | |
0f2a261a | 86 | for < 0, but test for a real error by making sure the value in R0 |
8d2485ed | 87 | is a real error number. Linus said he will make sure the no syscall |
02a9f771 | 88 | returns a value in -1 .. -4095 as a valid result so we can safely |
8d2485ed | 89 | test with -4095. */ |
ff550b1f | 90 | |
8d2485ed | 91 | #undef PSEUDO |
63cc0e75 RH |
92 | #define PSEUDO(name, syscall_name, args) \ |
93 | .text; \ | |
94 | ENTRY (name); \ | |
95 | DO_CALL (syscall_name, args); \ | |
96 | cmn r0, $4096; | |
97 | ||
98 | #define PSEUDO_RET \ | |
6ccd0107 | 99 | it cc; \ |
63cc0e75 RH |
100 | RETINSTR(cc, lr); \ |
101 | b PLTJMP(SYSCALL_ERROR) | |
63ac74aa UD |
102 | #undef ret |
103 | #define ret PSEUDO_RET | |
8d2485ed UD |
104 | |
105 | #undef PSEUDO_END | |
63cc0e75 RH |
106 | #define PSEUDO_END(name) \ |
107 | SYSCALL_ERROR_HANDLER; \ | |
8d2485ed UD |
108 | END (name) |
109 | ||
98f7320f | 110 | #undef PSEUDO_NOERRNO |
63cc0e75 RH |
111 | #define PSEUDO_NOERRNO(name, syscall_name, args) \ |
112 | .text; \ | |
113 | ENTRY (name); \ | |
114 | DO_CALL (syscall_name, args); | |
98f7320f | 115 | |
63cc0e75 RH |
116 | #define PSEUDO_RET_NOERRNO \ |
117 | DO_RET (lr); | |
44acff5d | 118 | |
98f7320f UD |
119 | #undef ret_NOERRNO |
120 | #define ret_NOERRNO PSEUDO_RET_NOERRNO | |
121 | ||
122 | #undef PSEUDO_END_NOERRNO | |
63cc0e75 | 123 | #define PSEUDO_END_NOERRNO(name) \ |
98f7320f UD |
124 | END (name) |
125 | ||
ae53e7a7 UD |
126 | /* The function has to return the error code. */ |
127 | #undef PSEUDO_ERRVAL | |
63cc0e75 RH |
128 | #define PSEUDO_ERRVAL(name, syscall_name, args) \ |
129 | .text; \ | |
130 | ENTRY (name) \ | |
131 | DO_CALL (syscall_name, args); \ | |
132 | rsb r0, r0, #0 | |
ae53e7a7 UD |
133 | |
134 | #undef PSEUDO_END_ERRVAL | |
63cc0e75 | 135 | #define PSEUDO_END_ERRVAL(name) \ |
ae53e7a7 UD |
136 | END (name) |
137 | ||
138 | #define ret_ERRVAL PSEUDO_RET_NOERRNO | |
139 | ||
4f41c682 | 140 | #if !IS_IN (libc) |
2f0910ca | 141 | # define SYSCALL_ERROR __local_syscall_error |
02a9f771 DJ |
142 | # if RTLD_PRIVATE_ERRNO |
143 | # define SYSCALL_ERROR_HANDLER \ | |
144 | __local_syscall_error: \ | |
cd24e113 RH |
145 | rsb r0, r0, #0; \ |
146 | LDST_PCREL(str, r0, r1, C_SYMBOL_NAME(rtld_errno)); \ | |
147 | mvn r0, #0; \ | |
148 | DO_RET(lr) | |
02a9f771 | 149 | # else |
01b32e73 TS |
150 | # if defined(__ARM_ARCH_4T__) && defined(__THUMB_INTERWORK__) |
151 | # define POP_PC \ | |
55668624 | 152 | pop { lr }; \ |
01b32e73 TS |
153 | cfi_adjust_cfa_offset (-4); \ |
154 | cfi_restore (lr); \ | |
155 | bx lr | |
156 | # else | |
55668624 | 157 | # define POP_PC pop { pc } |
01b32e73 | 158 | # endif |
02a9f771 | 159 | # define SYSCALL_ERROR_HANDLER \ |
2f0910ca | 160 | __local_syscall_error: \ |
55668624 | 161 | push { lr }; \ |
01b32e73 TS |
162 | cfi_adjust_cfa_offset (4); \ |
163 | cfi_rel_offset (lr, 0); \ | |
55668624 | 164 | push { r0 }; \ |
01b32e73 | 165 | cfi_adjust_cfa_offset (4); \ |
2f0910ca | 166 | bl PLTJMP(C_SYMBOL_NAME(__errno_location)); \ |
55668624 | 167 | pop { r1 }; \ |
01b32e73 | 168 | cfi_adjust_cfa_offset (-4); \ |
2f0910ca UD |
169 | rsb r1, r1, #0; \ |
170 | str r1, [r0]; \ | |
171 | mvn r0, #0; \ | |
b2b2415f | 172 | POP_PC; |
02a9f771 | 173 | # endif |
2f0910ca UD |
174 | #else |
175 | # define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */ | |
176 | # define SYSCALL_ERROR __syscall_error | |
177 | #endif | |
ff550b1f | 178 | |
25593dca JM |
179 | /* The ARM EABI user interface passes the syscall number in r7, instead |
180 | of in the swi. This is more efficient, because the kernel does not need | |
181 | to fetch the swi from memory to find out the number; which can be painful | |
182 | with separate I-cache and D-cache. Make sure to use 0 for the SWI | |
183 | argument; otherwise the (optional) compatibility code for APCS binaries | |
184 | may be invoked. */ | |
185 | ||
ff550b1f | 186 | /* Linux takes system call args in registers: |
ff550b1f UD |
187 | arg 1 r0 |
188 | arg 2 r1 | |
189 | arg 3 r2 | |
190 | arg 4 r3 | |
191 | arg 5 r4 (this is different from the APCS convention) | |
62749187 UD |
192 | arg 6 r5 |
193 | arg 7 r6 | |
ff550b1f UD |
194 | |
195 | The compiler is going to form a call by coming here, through PSEUDO, with | |
196 | arguments | |
4ac049e1 JM |
197 | syscall number in the DO_CALL macro |
198 | arg 1 r0 | |
199 | arg 2 r1 | |
200 | arg 3 r2 | |
201 | arg 4 r3 | |
202 | arg 5 [sp] | |
62749187 UD |
203 | arg 6 [sp+4] |
204 | arg 7 [sp+8] | |
ff550b1f | 205 | |
62749187 UD |
206 | We need to shuffle values between R4..R6 and the stack so that the |
207 | caller's v1..v3 and stack frame are not corrupted, and the kernel | |
208 | sees the right arguments. | |
ff550b1f UD |
209 | |
210 | */ | |
8d2485ed | 211 | |
25593dca JM |
212 | /* We must save and restore r7 (call-saved) for the syscall number. |
213 | We never make function calls from inside here (only potentially | |
214 | signal handlers), so we do not bother with doubleword alignment. | |
215 | ||
216 | Just like the APCS syscall convention, the EABI syscall convention uses | |
217 | r0 through r6 for up to seven syscall arguments. None are ever passed to | |
218 | the kernel on the stack, although incoming arguments are on the stack for | |
219 | syscalls with five or more arguments. | |
220 | ||
221 | The assembler will convert the literal pool load to a move for most | |
222 | syscalls. */ | |
223 | ||
8d2485ed | 224 | #undef DO_CALL |
63cc0e75 RH |
225 | #define DO_CALL(syscall_name, args) \ |
226 | DOARGS_##args; \ | |
227 | ldr r7, =SYS_ify (syscall_name); \ | |
228 | swi 0x0; \ | |
229 | UNDOARGS_##args | |
ff550b1f | 230 | |
25593dca | 231 | #undef DOARGS_0 |
63cc0e75 RH |
232 | #define DOARGS_0 \ |
233 | .fnstart; \ | |
55668624 | 234 | push { r7 }; \ |
63cc0e75 RH |
235 | cfi_adjust_cfa_offset (4); \ |
236 | cfi_rel_offset (r7, 0); \ | |
237 | .save { r7 } | |
25593dca JM |
238 | #undef DOARGS_1 |
239 | #define DOARGS_1 DOARGS_0 | |
240 | #undef DOARGS_2 | |
241 | #define DOARGS_2 DOARGS_0 | |
242 | #undef DOARGS_3 | |
243 | #define DOARGS_3 DOARGS_0 | |
244 | #undef DOARGS_4 | |
245 | #define DOARGS_4 DOARGS_0 | |
246 | #undef DOARGS_5 | |
63cc0e75 RH |
247 | #define DOARGS_5 \ |
248 | .fnstart; \ | |
55668624 | 249 | push {r4, r7}; \ |
63cc0e75 RH |
250 | cfi_adjust_cfa_offset (8); \ |
251 | cfi_rel_offset (r4, 0); \ | |
252 | cfi_rel_offset (r7, 4); \ | |
253 | .save { r4, r7 }; \ | |
254 | ldr r4, [sp, #8] | |
25593dca | 255 | #undef DOARGS_6 |
63cc0e75 RH |
256 | #define DOARGS_6 \ |
257 | .fnstart; \ | |
258 | mov ip, sp; \ | |
55668624 | 259 | push {r4, r5, r7}; \ |
63cc0e75 RH |
260 | cfi_adjust_cfa_offset (12); \ |
261 | cfi_rel_offset (r4, 0); \ | |
262 | cfi_rel_offset (r5, 4); \ | |
263 | cfi_rel_offset (r7, 8); \ | |
264 | .save { r4, r5, r7 }; \ | |
265 | ldmia ip, {r4, r5} | |
25593dca | 266 | #undef DOARGS_7 |
63cc0e75 RH |
267 | #define DOARGS_7 \ |
268 | .fnstart; \ | |
269 | mov ip, sp; \ | |
55668624 | 270 | push {r4, r5, r6, r7}; \ |
63cc0e75 RH |
271 | cfi_adjust_cfa_offset (16); \ |
272 | cfi_rel_offset (r4, 0); \ | |
273 | cfi_rel_offset (r5, 4); \ | |
274 | cfi_rel_offset (r6, 8); \ | |
275 | cfi_rel_offset (r7, 12); \ | |
276 | .save { r4, r5, r6, r7 }; \ | |
277 | ldmia ip, {r4, r5, r6} | |
ff550b1f | 278 | |
25593dca | 279 | #undef UNDOARGS_0 |
63cc0e75 | 280 | #define UNDOARGS_0 \ |
55668624 | 281 | pop {r7}; \ |
63cc0e75 RH |
282 | cfi_adjust_cfa_offset (-4); \ |
283 | cfi_restore (r7); \ | |
284 | .fnend | |
25593dca JM |
285 | #undef UNDOARGS_1 |
286 | #define UNDOARGS_1 UNDOARGS_0 | |
287 | #undef UNDOARGS_2 | |
288 | #define UNDOARGS_2 UNDOARGS_0 | |
289 | #undef UNDOARGS_3 | |
290 | #define UNDOARGS_3 UNDOARGS_0 | |
291 | #undef UNDOARGS_4 | |
292 | #define UNDOARGS_4 UNDOARGS_0 | |
293 | #undef UNDOARGS_5 | |
63cc0e75 | 294 | #define UNDOARGS_5 \ |
55668624 | 295 | pop {r4, r7}; \ |
63cc0e75 RH |
296 | cfi_adjust_cfa_offset (-8); \ |
297 | cfi_restore (r4); \ | |
298 | cfi_restore (r7); \ | |
299 | .fnend | |
25593dca | 300 | #undef UNDOARGS_6 |
63cc0e75 | 301 | #define UNDOARGS_6 \ |
55668624 | 302 | pop {r4, r5, r7}; \ |
63cc0e75 RH |
303 | cfi_adjust_cfa_offset (-12); \ |
304 | cfi_restore (r4); \ | |
305 | cfi_restore (r5); \ | |
306 | cfi_restore (r7); \ | |
307 | .fnend | |
25593dca | 308 | #undef UNDOARGS_7 |
63cc0e75 | 309 | #define UNDOARGS_7 \ |
55668624 | 310 | pop {r4, r5, r6, r7}; \ |
63cc0e75 RH |
311 | cfi_adjust_cfa_offset (-16); \ |
312 | cfi_restore (r4); \ | |
313 | cfi_restore (r5); \ | |
314 | cfi_restore (r6); \ | |
315 | cfi_restore (r7); \ | |
316 | .fnend | |
8d2485ed | 317 | |
ba023f01 UD |
318 | #else /* not __ASSEMBLER__ */ |
319 | ||
320 | /* Define a macro which expands into the inline wrapper code for a system | |
321 | call. */ | |
322 | #undef INLINE_SYSCALL | |
2f0910ca | 323 | #define INLINE_SYSCALL(name, nr, args...) \ |
114e7d50 UD |
324 | ({ unsigned int _sys_result = INTERNAL_SYSCALL (name, , nr, args); \ |
325 | if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (_sys_result, ), 0)) \ | |
2f0910ca | 326 | { \ |
114e7d50 | 327 | __set_errno (INTERNAL_SYSCALL_ERRNO (_sys_result, )); \ |
2f0910ca UD |
328 | _sys_result = (unsigned int) -1; \ |
329 | } \ | |
330 | (int) _sys_result; }) | |
331 | ||
aeeec7fb UD |
332 | #undef INTERNAL_SYSCALL_DECL |
333 | #define INTERNAL_SYSCALL_DECL(err) do { } while (0) | |
334 | ||
25593dca JM |
335 | #if defined(__thumb__) |
336 | /* We can not expose the use of r7 to the compiler. GCC (as | |
337 | of 4.5) uses r7 as the hard frame pointer for Thumb - although | |
338 | for Thumb-2 it isn't obviously a better choice than r11. | |
339 | And GCC does not support asms that conflict with the frame | |
340 | pointer. | |
341 | ||
342 | This would be easier if syscall numbers never exceeded 255, | |
343 | but they do. For the moment the LOAD_ARGS_7 is sacrificed. | |
344 | We can't use push/pop inside the asm because that breaks | |
345 | unwinding (i.e. thread cancellation) for this frame. We can't | |
346 | locally save and restore r7, because we do not know if this | |
347 | function uses r7 or if it is our caller's r7; if it is our caller's, | |
348 | then unwinding will fail higher up the stack. So we move the | |
349 | syscall out of line and provide its own unwind information. */ | |
350 | # undef INTERNAL_SYSCALL_RAW | |
351 | # define INTERNAL_SYSCALL_RAW(name, err, nr, args...) \ | |
352 | ({ \ | |
353 | register int _a1 asm ("a1"); \ | |
354 | int _nametmp = name; \ | |
355 | LOAD_ARGS_##nr (args) \ | |
356 | register int _name asm ("ip") = _nametmp; \ | |
357 | asm volatile ("bl __libc_do_syscall" \ | |
358 | : "=r" (_a1) \ | |
359 | : "r" (_name) ASM_ARGS_##nr \ | |
360 | : "memory", "lr"); \ | |
361 | _a1; }) | |
362 | #else /* ARM */ | |
363 | # undef INTERNAL_SYSCALL_RAW | |
364 | # define INTERNAL_SYSCALL_RAW(name, err, nr, args...) \ | |
365 | ({ \ | |
366 | register int _a1 asm ("r0"), _nr asm ("r7"); \ | |
ba023f01 | 367 | LOAD_ARGS_##nr (args) \ |
25593dca JM |
368 | _nr = name; \ |
369 | asm volatile ("swi 0x0 @ syscall " #name \ | |
ba023f01 | 370 | : "=r" (_a1) \ |
25593dca | 371 | : "r" (_nr) ASM_ARGS_##nr \ |
cf666e4b | 372 | : "memory"); \ |
25593dca JM |
373 | _a1; }) |
374 | #endif | |
ba023f01 | 375 | |
485a9bb9 DJ |
376 | #undef INTERNAL_SYSCALL |
377 | #define INTERNAL_SYSCALL(name, err, nr, args...) \ | |
378 | INTERNAL_SYSCALL_RAW(SYS_ify(name), err, nr, args) | |
379 | ||
380 | #undef INTERNAL_SYSCALL_ARM | |
381 | #define INTERNAL_SYSCALL_ARM(name, err, nr, args...) \ | |
382 | INTERNAL_SYSCALL_RAW(__ARM_NR_##name, err, nr, args) | |
383 | ||
2f0910ca | 384 | #undef INTERNAL_SYSCALL_ERROR_P |
aeeec7fb UD |
385 | #define INTERNAL_SYSCALL_ERROR_P(val, err) \ |
386 | ((unsigned int) (val) >= 0xfffff001u) | |
2f0910ca UD |
387 | |
388 | #undef INTERNAL_SYSCALL_ERRNO | |
aeeec7fb | 389 | #define INTERNAL_SYSCALL_ERRNO(val, err) (-(val)) |
2f0910ca | 390 | |
b8386c28 AZ |
391 | #define VDSO_NAME "LINUX_2.6" |
392 | #define VDSO_HASH 61765110 | |
393 | ||
b65d3e5f | 394 | /* List of system calls which are supported as vsyscalls. */ |
eb502f72 AS |
395 | #define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_clock_gettime" |
396 | #define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_gettimeofday" | |
b65d3e5f | 397 | |
ba023f01 UD |
398 | #define LOAD_ARGS_0() |
399 | #define ASM_ARGS_0 | |
400 | #define LOAD_ARGS_1(a1) \ | |
9806fbba JM |
401 | int _a1tmp = (int) (a1); \ |
402 | LOAD_ARGS_0 () \ | |
403 | _a1 = _a1tmp; | |
ba023f01 UD |
404 | #define ASM_ARGS_1 ASM_ARGS_0, "r" (_a1) |
405 | #define LOAD_ARGS_2(a1, a2) \ | |
9806fbba JM |
406 | int _a2tmp = (int) (a2); \ |
407 | LOAD_ARGS_1 (a1) \ | |
408 | register int _a2 asm ("a2") = _a2tmp; | |
ba023f01 UD |
409 | #define ASM_ARGS_2 ASM_ARGS_1, "r" (_a2) |
410 | #define LOAD_ARGS_3(a1, a2, a3) \ | |
9806fbba JM |
411 | int _a3tmp = (int) (a3); \ |
412 | LOAD_ARGS_2 (a1, a2) \ | |
413 | register int _a3 asm ("a3") = _a3tmp; | |
ba023f01 UD |
414 | #define ASM_ARGS_3 ASM_ARGS_2, "r" (_a3) |
415 | #define LOAD_ARGS_4(a1, a2, a3, a4) \ | |
9806fbba JM |
416 | int _a4tmp = (int) (a4); \ |
417 | LOAD_ARGS_3 (a1, a2, a3) \ | |
418 | register int _a4 asm ("a4") = _a4tmp; | |
ba023f01 UD |
419 | #define ASM_ARGS_4 ASM_ARGS_3, "r" (_a4) |
420 | #define LOAD_ARGS_5(a1, a2, a3, a4, a5) \ | |
9806fbba JM |
421 | int _v1tmp = (int) (a5); \ |
422 | LOAD_ARGS_4 (a1, a2, a3, a4) \ | |
423 | register int _v1 asm ("v1") = _v1tmp; | |
ba023f01 | 424 | #define ASM_ARGS_5 ASM_ARGS_4, "r" (_v1) |
62749187 | 425 | #define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \ |
9806fbba JM |
426 | int _v2tmp = (int) (a6); \ |
427 | LOAD_ARGS_5 (a1, a2, a3, a4, a5) \ | |
428 | register int _v2 asm ("v2") = _v2tmp; | |
62749187 | 429 | #define ASM_ARGS_6 ASM_ARGS_5, "r" (_v2) |
25593dca JM |
430 | #ifndef __thumb__ |
431 | # define LOAD_ARGS_7(a1, a2, a3, a4, a5, a6, a7) \ | |
432 | int _v3tmp = (int) (a7); \ | |
433 | LOAD_ARGS_6 (a1, a2, a3, a4, a5, a6) \ | |
9806fbba | 434 | register int _v3 asm ("v3") = _v3tmp; |
25593dca JM |
435 | # define ASM_ARGS_7 ASM_ARGS_6, "r" (_v3) |
436 | #endif | |
437 | ||
438 | /* For EABI, non-constant syscalls are actually pretty easy... */ | |
439 | #undef INTERNAL_SYSCALL_NCS | |
440 | #define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \ | |
441 | INTERNAL_SYSCALL_RAW (number, err, nr, args) | |
02a9f771 | 442 | |
09c76a74 AZ |
443 | #define SINGLE_THREAD_BY_GLOBAL 1 |
444 | ||
e0ebc3b2 | 445 | #endif /* __ASSEMBLER__ */ |
8d2485ed UD |
446 | |
447 | #endif /* linux/arm/sysdep.h */ |