summaryrefslogtreecommitdiffstats
path: root/src/runtime/sys_openbsd_mips64.s
blob: 3e4d209081c6402b8a39cd9ba0493140b262ff5f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//
// System calls and other sys.stuff for mips64, OpenBSD
// /usr/src/sys/kern/syscalls.master for syscall numbers.
//

#include "go_asm.h"
#include "go_tls.h"
#include "textflag.h"

#define CLOCK_REALTIME	$0
#define	CLOCK_MONOTONIC	$3

// Exit the entire program (like C exit)
TEXT runtime·exit(SB),NOSPLIT|NOFRAME,$0
	MOVW	code+0(FP), R4		// arg 1 - status
	MOVV	$1, R2			// sys_exit
	SYSCALL
	BEQ	R7, 3(PC)
	MOVV	$0, R2			// crash on syscall failure
	MOVV	R2, (R2)
	RET

// func exitThread(wait *uint32)
TEXT runtime·exitThread(SB),NOSPLIT,$0
	MOVV	wait+0(FP), R4		// arg 1 - notdead
	MOVV	$302, R2		// sys___threxit
	SYSCALL
	MOVV	$0, R2			// crash on syscall failure
	MOVV	R2, (R2)
	JMP	0(PC)

TEXT runtime·open(SB),NOSPLIT|NOFRAME,$0
	MOVV	name+0(FP), R4		// arg 1 - path
	MOVW	mode+8(FP), R5		// arg 2 - mode
	MOVW	perm+12(FP), R6		// arg 3 - perm
	MOVV	$5, R2			// sys_open
	SYSCALL
	BEQ	R7, 2(PC)
	MOVW	$-1, R2
	MOVW	R2, ret+16(FP)
	RET

TEXT runtime·closefd(SB),NOSPLIT|NOFRAME,$0
	MOVW	fd+0(FP), R4		// arg 1 - fd
	MOVV	$6, R2			// sys_close
	SYSCALL
	BEQ	R7, 2(PC)
	MOVW	$-1, R2
	MOVW	R2, ret+8(FP)
	RET

TEXT runtime·read(SB),NOSPLIT|NOFRAME,$0
	MOVW	fd+0(FP), R4		// arg 1 - fd
	MOVV	p+8(FP), R5		// arg 2 - buf
	MOVW	n+16(FP), R6		// arg 3 - nbyte
	MOVV	$3, R2			// sys_read
	SYSCALL
	BEQ	R7, 2(PC)
	SUBVU	R2, R0, R2	// caller expects negative errno
	MOVW	R2, ret+24(FP)
	RET

// func pipe() (r, w int32, errno int32)
TEXT runtime·pipe(SB),NOSPLIT|NOFRAME,$0-12
	MOVV	$r+0(FP), R4
	MOVW	$0, R5
	MOVV	$101, R2		// sys_pipe2
	SYSCALL
	BEQ	R7, 2(PC)
	SUBVU	R2, R0, R2	// caller expects negative errno
	MOVW	R2, errno+8(FP)
	RET

// func pipe2(flags int32) (r, w int32, errno int32)
TEXT runtime·pipe2(SB),NOSPLIT|NOFRAME,$0-20
	MOVV	$r+8(FP), R4
	MOVW	flags+0(FP), R5
	MOVV	$101, R2		// sys_pipe2
	SYSCALL
	BEQ	R7, 2(PC)
	SUBVU	R2, R0, R2	// caller expects negative errno
	MOVW	R2, errno+16(FP)
	RET

TEXT runtime·write1(SB),NOSPLIT|NOFRAME,$0
	MOVV	fd+0(FP), R4		// arg 1 - fd
	MOVV	p+8(FP), R5		// arg 2 - buf
	MOVW	n+16(FP), R6		// arg 3 - nbyte
	MOVV	$4, R2			// sys_write
	SYSCALL
	BEQ	R7, 2(PC)
	SUBVU	R2, R0, R2	// caller expects negative errno
	MOVW	R2, ret+24(FP)
	RET

TEXT runtime·usleep(SB),NOSPLIT,$24-4
	MOVWU	usec+0(FP), R3
	MOVV	R3, R5
	MOVW	$1000000, R4
	DIVVU	R4, R3
	MOVV	LO, R3
	MOVV	R3, 8(R29)		// tv_sec
	MOVW	$1000, R4
	MULVU	R3, R4
	MOVV	LO, R4
	SUBVU	R4, R5
	MOVV	R5, 16(R29)		// tv_nsec

	ADDV	$8, R29, R4		// arg 1 - rqtp
	MOVV	$0, R5			// arg 2 - rmtp
	MOVV	$91, R2			// sys_nanosleep
	SYSCALL
	RET

TEXT runtime·getthrid(SB),NOSPLIT,$0-4
	MOVV	$299, R2		// sys_getthrid
	SYSCALL
	MOVW	R2, ret+0(FP)
	RET

TEXT runtime·thrkill(SB),NOSPLIT,$0-16
	MOVW	tid+0(FP), R4		// arg 1 - tid
	MOVV	sig+8(FP), R5		// arg 2 - signum
	MOVW	$0, R6			// arg 3 - tcb
	MOVV	$119, R2		// sys_thrkill
	SYSCALL
	RET

TEXT runtime·raiseproc(SB),NOSPLIT,$0
	MOVV	$20, R4			// sys_getpid
	SYSCALL
	MOVV	R2, R4			// arg 1 - pid
	MOVW	sig+0(FP), R5		// arg 2 - signum
	MOVV	$122, R2		// sys_kill
	SYSCALL
	RET

TEXT runtime·mmap(SB),NOSPLIT,$0
	MOVV	addr+0(FP), R4		// arg 1 - addr
	MOVV	n+8(FP), R5		// arg 2 - len
	MOVW	prot+16(FP), R6		// arg 3 - prot
	MOVW	flags+20(FP), R7	// arg 4 - flags
	MOVW	fd+24(FP), R8		// arg 5 - fd
	MOVW	$0, R9			// arg 6 - pad
	MOVW	off+28(FP), R10		// arg 7 - offset
	MOVV	$197, R2		// sys_mmap
	SYSCALL
	MOVV	$0, R4
	BEQ	R7, 3(PC)
	MOVV	R2, R4			// if error, move to R4
	MOVV	$0, R2
	MOVV	R2, p+32(FP)
	MOVV	R4, err+40(FP)
	RET

TEXT runtime·munmap(SB),NOSPLIT,$0
	MOVV	addr+0(FP), R4		// arg 1 - addr
	MOVV	n+8(FP), R5		// arg 2 - len
	MOVV	$73, R2			// sys_munmap
	SYSCALL
	BEQ	R7, 3(PC)
	MOVV	$0, R2			// crash on syscall failure
	MOVV	R2, (R2)
	RET

TEXT runtime·madvise(SB),NOSPLIT,$0
	MOVV	addr+0(FP), R4		// arg 1 - addr
	MOVV	n+8(FP), R5		// arg 2 - len
	MOVW	flags+16(FP), R6	// arg 2 - flags
	MOVV	$75, R2			// sys_madvise
	SYSCALL
	BEQ	R7, 2(PC)
	MOVW	$-1, R2
	MOVW	R2, ret+24(FP)
	RET

TEXT runtime·setitimer(SB),NOSPLIT,$0
	MOVW	mode+0(FP), R4		// arg 1 - mode
	MOVV	new+8(FP), R5		// arg 2 - new value
	MOVV	old+16(FP), R6		// arg 3 - old value
	MOVV	$69, R2			// sys_setitimer
	SYSCALL
	RET

// func walltime1() (sec int64, nsec int32)
TEXT runtime·walltime1(SB), NOSPLIT, $32
	MOVW	CLOCK_REALTIME, R4	// arg 1 - clock_id
	MOVV	$8(R29), R5		// arg 2 - tp
	MOVV	$87, R2			// sys_clock_gettime
	SYSCALL

	MOVV	8(R29), R4		// sec
	MOVV	16(R29), R5		// nsec
	MOVV	R4, sec+0(FP)
	MOVW	R5, nsec+8(FP)

	RET

// int64 nanotime1(void) so really
// void nanotime1(int64 *nsec)
TEXT runtime·nanotime1(SB),NOSPLIT,$32
	MOVW	CLOCK_MONOTONIC, R4	// arg 1 - clock_id
	MOVV	$8(R29), R5		// arg 2 - tp
	MOVV	$87, R2			// sys_clock_gettime
	SYSCALL

	MOVV	8(R29), R3		// sec
	MOVV	16(R29), R5		// nsec

	MOVV	$1000000000, R4
	MULVU	R4, R3
	MOVV	LO, R3
	ADDVU	R5, R3
	MOVV	R3, ret+0(FP)
	RET

TEXT runtime·sigaction(SB),NOSPLIT,$0
	MOVW	sig+0(FP), R4		// arg 1 - signum
	MOVV	new+8(FP), R5		// arg 2 - new sigaction
	MOVV	old+16(FP), R6		// arg 3 - old sigaction
	MOVV	$46, R2			// sys_sigaction
	SYSCALL
	BEQ	R7, 3(PC)
	MOVV	$3, R2			// crash on syscall failure
	MOVV	R2, (R2)
	RET

TEXT runtime·obsdsigprocmask(SB),NOSPLIT,$0
	MOVW	how+0(FP), R4		// arg 1 - mode
	MOVW	new+4(FP), R5		// arg 2 - new
	MOVV	$48, R2			// sys_sigprocmask
	SYSCALL
	BEQ	R7, 3(PC)
	MOVV	$3, R2			// crash on syscall failure
	MOVV	R2, (R2)
	MOVW	R2, ret+8(FP)
	RET

TEXT runtime·sigfwd(SB),NOSPLIT,$0-32
	MOVW	sig+8(FP), R4
	MOVV	info+16(FP), R5
	MOVV	ctx+24(FP), R6
	MOVV	fn+0(FP), R25		// Must use R25, needed for PIC code.
	CALL	(R25)
	RET

TEXT runtime·sigtramp(SB),NOSPLIT,$192
	// initialize REGSB = PC&0xffffffff00000000
	BGEZAL	R0, 1(PC)
	SRLV	$32, R31, RSB
	SLLV	$32, RSB

	// this might be called in external code context,
	// where g is not set.
	MOVB	runtime·iscgo(SB), R1
	BEQ	R1, 2(PC)
	JAL	runtime·load_g(SB)

	MOVW	R4, 8(R29)
	MOVV	R5, 16(R29)
	MOVV	R6, 24(R29)
	MOVV	$runtime·sigtrampgo(SB), R1
	JAL	(R1)
	RET

// int32 tfork(void *param, uintptr psize, M *mp, G *gp, void (*fn)(void));
TEXT runtime·tfork(SB),NOSPLIT,$0

	// Copy mp, gp and fn off parent stack for use by child.
	MOVV	mm+16(FP), R16
	MOVV	gg+24(FP), R17
	MOVV	fn+32(FP), R18

	MOVV	param+0(FP), R4		// arg 1 - param
	MOVV	psize+8(FP), R5		// arg 2 - psize
	MOVV	$8, R2			// sys___tfork
	SYSCALL

	// Return if syscall failed.
	BEQ	R7, 4(PC)
	SUBVU	R2, R0, R2		// caller expects negative errno
	MOVW	R2, ret+40(FP)
	RET

	// In parent, return.
	BEQ	R2, 3(PC)
	MOVW	R2, ret+40(FP)
	RET

	// Initialise m, g.
	MOVV	R17, g
	MOVV	R16, g_m(g)

	// Call fn.
	CALL	(R18)

	// fn should never return.
	MOVV	$2, R8			// crash if reached
	MOVV	R8, (R8)
	RET

TEXT runtime·sigaltstack(SB),NOSPLIT,$0
	MOVV	new+0(FP), R4		// arg 1 - new sigaltstack
	MOVV	old+8(FP), R5		// arg 2 - old sigaltstack
	MOVV	$288, R2		// sys_sigaltstack
	SYSCALL
	BEQ	R7, 3(PC)
	MOVV	$0, R8			// crash on syscall failure
	MOVV	R8, (R8)
	RET

TEXT runtime·osyield(SB),NOSPLIT,$0
	MOVV	$298, R2		// sys_sched_yield
	SYSCALL
	RET

TEXT runtime·thrsleep(SB),NOSPLIT,$0
	MOVV	ident+0(FP), R4		// arg 1 - ident
	MOVW	clock_id+8(FP), R5	// arg 2 - clock_id
	MOVV	tsp+16(FP), R6		// arg 3 - tsp
	MOVV	lock+24(FP), R7		// arg 4 - lock
	MOVV	abort+32(FP), R8	// arg 5 - abort
	MOVV	$94, R2			// sys___thrsleep
	SYSCALL
	MOVW	R2, ret+40(FP)
	RET

TEXT runtime·thrwakeup(SB),NOSPLIT,$0
	MOVV	ident+0(FP), R4		// arg 1 - ident
	MOVW	n+8(FP), R5		// arg 2 - n
	MOVV	$301, R2		// sys___thrwakeup
	SYSCALL
	MOVW	R2, ret+16(FP)
	RET

TEXT runtime·sysctl(SB),NOSPLIT,$0
	MOVV	mib+0(FP), R4		// arg 1 - mib
	MOVW	miblen+8(FP), R5	// arg 2 - miblen
	MOVV	out+16(FP), R6		// arg 3 - out
	MOVV	size+24(FP), R7		// arg 4 - size
	MOVV	dst+32(FP), R8		// arg 5 - dest
	MOVV	ndst+40(FP), R9		// arg 6 - newlen
	MOVV	$202, R2		// sys___sysctl
	SYSCALL
	BEQ	R7, 2(PC)
	SUBVU	R2, R0, R2	// caller expects negative errno
	MOVW	R2, ret+48(FP)
	RET

// int32 runtime·kqueue(void);
TEXT runtime·kqueue(SB),NOSPLIT,$0
	MOVV	$269, R2		// sys_kqueue
	SYSCALL
	BEQ	R7, 2(PC)
	SUBVU	R2, R0, R2	// caller expects negative errno
	MOVW	R2, ret+0(FP)
	RET

// int32 runtime·kevent(int kq, Kevent *changelist, int nchanges, Kevent *eventlist, int nevents, Timespec *timeout);
TEXT runtime·kevent(SB),NOSPLIT,$0
	MOVW	kq+0(FP), R4		// arg 1 - kq
	MOVV	ch+8(FP), R5		// arg 2 - changelist
	MOVW	nch+16(FP), R6		// arg 3 - nchanges
	MOVV	ev+24(FP), R7		// arg 4 - eventlist
	MOVW	nev+32(FP), R8		// arg 5 - nevents
	MOVV	ts+40(FP), R9		// arg 6 - timeout
	MOVV	$72, R2			// sys_kevent
	SYSCALL
	BEQ	R7, 2(PC)
	SUBVU	R2, R0, R2	// caller expects negative errno
	MOVW	R2, ret+48(FP)
	RET

// func closeonexec(fd int32)
TEXT runtime·closeonexec(SB),NOSPLIT,$0
	MOVW	fd+0(FP), R4		// arg 1 - fd
	MOVV	$2, R5			// arg 2 - cmd (F_SETFD)
	MOVV	$1, R6			// arg 3 - arg (FD_CLOEXEC)
	MOVV	$92, R2			// sys_fcntl
	SYSCALL
	RET

// func runtime·setNonblock(int32 fd)
TEXT runtime·setNonblock(SB),NOSPLIT|NOFRAME,$0-4
	MOVW	fd+0(FP), R4		// arg 1 - fd
	MOVV	$3, R5			// arg 2 - cmd (F_GETFL)
	MOVV	$0, R6			// arg 3
	MOVV	$92, R2			// sys_fcntl
	SYSCALL
	MOVV	$4, R6			// O_NONBLOCK
	OR	R2, R6			// arg 3 - flags
	MOVW	fd+0(FP), R4		// arg 1 - fd
	MOVV	$4, R5			// arg 2 - cmd (F_SETFL)
	MOVV	$92, R2			// sys_fcntl
	SYSCALL
	RET