github.com/shijuvar/go@v0.0.0-20141209052335-e8f13700b70c/src/runtime/sys_dragonfly_amd64.s (about) 1 // Copyright 2009 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 // 5 // System calls and other sys.stuff for AMD64, FreeBSD 6 // /usr/src/sys/kern/syscalls.master for syscall numbers. 7 // 8 9 #include "go_asm.h" 10 #include "go_tls.h" 11 #include "textflag.h" 12 13 TEXT runtime·sys_umtx_sleep(SB),NOSPLIT,$0 14 MOVQ addr+0(FP), DI // arg 1 - ptr 15 MOVL val+8(FP), SI // arg 2 - value 16 MOVL timeout+12(FP), DX // arg 3 - timeout 17 MOVL $469, AX // umtx_sleep 18 SYSCALL 19 JCC 2(PC) 20 NEGQ AX 21 MOVL AX, ret+16(FP) 22 RET 23 24 TEXT runtime·sys_umtx_wakeup(SB),NOSPLIT,$0 25 MOVQ addr+0(FP), DI // arg 1 - ptr 26 MOVL val+8(FP), SI // arg 2 - count 27 MOVL $470, AX // umtx_wakeup 28 SYSCALL 29 JCC 2(PC) 30 NEGQ AX 31 MOVL AX, ret+16(FP) 32 RET 33 34 TEXT runtime·lwp_create(SB),NOSPLIT,$0 35 MOVQ param+0(FP), DI // arg 1 - params 36 MOVL $495, AX // lwp_create 37 SYSCALL 38 MOVL AX, ret+8(FP) 39 RET 40 41 TEXT runtime·lwp_start(SB),NOSPLIT,$0 42 MOVQ DI, R13 // m 43 44 // set up FS to point at m->tls 45 LEAQ m_tls(R13), DI 46 CALL runtime·settls(SB) // smashes DI 47 48 // set up m, g 49 get_tls(CX) 50 MOVQ m_g0(R13), DI 51 MOVQ R13, g_m(DI) 52 MOVQ DI, g(CX) 53 54 CALL runtime·stackcheck(SB) 55 CALL runtime·mstart(SB) 56 57 MOVQ 0, AX // crash (not reached) 58 59 // Exit the entire program (like C exit) 60 TEXT runtime·exit(SB),NOSPLIT,$-8 61 MOVL code+0(FP), DI // arg 1 exit status 62 MOVL $1, AX 63 SYSCALL 64 MOVL $0xf1, 0xf1 // crash 65 RET 66 67 TEXT runtime·exit1(SB),NOSPLIT,$-8 68 MOVL code+0(FP), DI // arg 1 exit status 69 MOVL $431, AX 70 SYSCALL 71 MOVL $0xf1, 0xf1 // crash 72 RET 73 74 TEXT runtime·open(SB),NOSPLIT,$-8 75 MOVQ name+0(FP), DI // arg 1 pathname 76 MOVL mode+8(FP), SI // arg 2 flags 77 MOVL perm+12(FP), DX // arg 3 mode 78 MOVL $5, AX 79 SYSCALL 80 MOVL AX, ret+16(FP) 81 RET 82 83 TEXT runtime·close(SB),NOSPLIT,$-8 84 MOVL fd+0(FP), DI // arg 1 fd 85 MOVL $6, AX 86 SYSCALL 87 MOVL AX, ret+8(FP) 88 RET 89 90 TEXT runtime·read(SB),NOSPLIT,$-8 91 MOVL fd+0(FP), DI // arg 1 fd 92 MOVQ p+8(FP), SI // arg 2 buf 93 MOVL n+16(FP), DX // arg 3 count 94 MOVL $3, AX 95 SYSCALL 96 MOVL AX, ret+24(FP) 97 RET 98 99 TEXT runtime·write(SB),NOSPLIT,$-8 100 MOVQ fd+0(FP), DI // arg 1 fd 101 MOVQ p+8(FP), SI // arg 2 buf 102 MOVL n+16(FP), DX // arg 3 count 103 MOVL $4, AX 104 SYSCALL 105 MOVL AX, ret+24(FP) 106 RET 107 108 TEXT runtime·getrlimit(SB),NOSPLIT,$-8 109 MOVL kind+0(FP), DI 110 MOVQ limit+8(FP), SI 111 MOVL $194, AX 112 SYSCALL 113 MOVL AX, ret+16(FP) 114 RET 115 116 TEXT runtime·raise(SB),NOSPLIT,$16 117 MOVL $496, AX // lwp_gettid 118 SYSCALL 119 MOVQ $-1, DI // arg 1 - pid 120 MOVQ 8(SP), DI // arg 2 - tid 121 MOVL sig+0(FP), SI // arg 3 - signum 122 MOVL $497, AX // lwp_kill 123 SYSCALL 124 RET 125 126 TEXT runtime·setitimer(SB), NOSPLIT, $-8 127 MOVL mode+0(FP), DI 128 MOVQ new+8(FP), SI 129 MOVQ old+16(FP), DX 130 MOVL $83, AX 131 SYSCALL 132 RET 133 134 // func now() (sec int64, nsec int32) 135 TEXT time·now(SB), NOSPLIT, $32 136 MOVL $232, AX 137 MOVQ $0, DI // CLOCK_REALTIME 138 LEAQ 8(SP), SI 139 SYSCALL 140 MOVQ 8(SP), AX // sec 141 MOVQ 16(SP), DX // nsec 142 143 // sec is in AX, nsec in DX 144 MOVQ AX, sec+0(FP) 145 MOVL DX, nsec+8(FP) 146 RET 147 148 TEXT runtime·nanotime(SB), NOSPLIT, $32 149 MOVL $232, AX 150 MOVQ $4, DI // CLOCK_MONOTONIC 151 LEAQ 8(SP), SI 152 SYSCALL 153 MOVQ 8(SP), AX // sec 154 MOVQ 16(SP), DX // nsec 155 156 // sec is in AX, nsec in DX 157 // return nsec in AX 158 IMULQ $1000000000, AX 159 ADDQ DX, AX 160 MOVQ AX, ret+0(FP) 161 RET 162 163 TEXT runtime·sigaction(SB),NOSPLIT,$-8 164 MOVL sig+0(FP), DI // arg 1 sig 165 MOVQ new+8(FP), SI // arg 2 act 166 MOVQ old+16(FP), DX // arg 3 oact 167 MOVL $342, AX 168 SYSCALL 169 JCC 2(PC) 170 MOVL $0xf1, 0xf1 // crash 171 RET 172 173 TEXT runtime·sigtramp(SB),NOSPLIT,$64 174 get_tls(BX) 175 176 // check that g exists 177 MOVQ g(BX), R10 178 CMPQ R10, $0 179 JNE 5(PC) 180 MOVQ DI, 0(SP) 181 MOVQ $runtime·badsignal(SB), AX 182 CALL AX 183 RET 184 185 // save g 186 MOVQ R10, 40(SP) 187 188 // g = m->signal 189 MOVQ g_m(R10), BP 190 MOVQ m_gsignal(BP), BP 191 MOVQ BP, g(BX) 192 193 MOVQ DI, 0(SP) 194 MOVQ SI, 8(SP) 195 MOVQ DX, 16(SP) 196 MOVQ R10, 24(SP) 197 198 CALL runtime·sighandler(SB) 199 200 // restore g 201 get_tls(BX) 202 MOVQ 40(SP), R10 203 MOVQ R10, g(BX) 204 RET 205 206 TEXT runtime·mmap(SB),NOSPLIT,$0 207 MOVQ addr+0(FP), DI // arg 1 - addr 208 MOVQ n+8(FP), SI // arg 2 - len 209 MOVL prot+16(FP), DX // arg 3 - prot 210 MOVL flags+20(FP), R10 // arg 4 - flags 211 MOVL fd+24(FP), R8 // arg 5 - fd 212 MOVL off+28(FP), R9 213 SUBQ $16, SP 214 MOVQ R9, 8(SP) // arg 7 - offset (passed on stack) 215 MOVQ $0, R9 // arg 6 - pad 216 MOVL $197, AX 217 SYSCALL 218 ADDQ $16, SP 219 MOVQ AX, ret+32(FP) 220 RET 221 222 TEXT runtime·munmap(SB),NOSPLIT,$0 223 MOVQ addr+0(FP), DI // arg 1 addr 224 MOVQ n+8(FP), SI // arg 2 len 225 MOVL $73, AX 226 SYSCALL 227 JCC 2(PC) 228 MOVL $0xf1, 0xf1 // crash 229 RET 230 231 TEXT runtime·madvise(SB),NOSPLIT,$0 232 MOVQ addr+0(FP), DI 233 MOVQ n+8(FP), SI 234 MOVL flags+16(FP), DX 235 MOVQ $75, AX // madvise 236 SYSCALL 237 // ignore failure - maybe pages are locked 238 RET 239 240 TEXT runtime·sigaltstack(SB),NOSPLIT,$-8 241 MOVQ new+8(SP), DI 242 MOVQ old+16(SP), SI 243 MOVQ $53, AX 244 SYSCALL 245 JCC 2(PC) 246 MOVL $0xf1, 0xf1 // crash 247 RET 248 249 TEXT runtime·usleep(SB),NOSPLIT,$16 250 MOVL $0, DX 251 MOVL usec+0(FP), AX 252 MOVL $1000000, CX 253 DIVL CX 254 MOVQ AX, 0(SP) // tv_sec 255 MOVL $1000, AX 256 MULL DX 257 MOVQ AX, 8(SP) // tv_nsec 258 259 MOVQ SP, DI // arg 1 - rqtp 260 MOVQ $0, SI // arg 2 - rmtp 261 MOVL $240, AX // sys_nanosleep 262 SYSCALL 263 RET 264 265 // set tls base to DI 266 TEXT runtime·settls(SB),NOSPLIT,$16 267 ADDQ $16, DI // adjust for ELF: wants to use -16(FS) and -8(FS) for g and m 268 MOVQ DI, 0(SP) 269 MOVQ $16, 8(SP) 270 MOVQ $0, DI // arg 1 - which 271 MOVQ SP, SI // arg 2 - tls_info 272 MOVQ $16, DX // arg 3 - infosize 273 MOVQ $472, AX // set_tls_area 274 SYSCALL 275 JCC 2(PC) 276 MOVL $0xf1, 0xf1 // crash 277 RET 278 279 TEXT runtime·sysctl(SB),NOSPLIT,$0 280 MOVQ mib+0(FP), DI // arg 1 - name 281 MOVL miblen+8(FP), SI // arg 2 - namelen 282 MOVQ out+16(FP), DX // arg 3 - oldp 283 MOVQ size+24(FP), R10 // arg 4 - oldlenp 284 MOVQ dst+32(FP), R8 // arg 5 - newp 285 MOVQ ndst+40(FP), R9 // arg 6 - newlen 286 MOVQ $202, AX // sys___sysctl 287 SYSCALL 288 JCC 4(PC) 289 NEGQ AX 290 MOVL AX, ret+48(FP) 291 RET 292 MOVL $0, AX 293 MOVL AX, ret+48(FP) 294 RET 295 296 TEXT runtime·osyield(SB),NOSPLIT,$-4 297 MOVL $331, AX // sys_sched_yield 298 SYSCALL 299 RET 300 301 TEXT runtime·sigprocmask(SB),NOSPLIT,$0 302 MOVL $3, DI // arg 1 - how (SIG_SETMASK) 303 MOVQ new+0(FP), SI // arg 2 - set 304 MOVQ old+8(FP), DX // arg 3 - oset 305 MOVL $340, AX // sys_sigprocmask 306 SYSCALL 307 JAE 2(PC) 308 MOVL $0xf1, 0xf1 // crash 309 RET 310 311 // int32 runtime·kqueue(void); 312 TEXT runtime·kqueue(SB),NOSPLIT,$0 313 MOVQ $0, DI 314 MOVQ $0, SI 315 MOVQ $0, DX 316 MOVL $362, AX 317 SYSCALL 318 JCC 2(PC) 319 NEGQ AX 320 MOVL AX, ret+0(FP) 321 RET 322 323 // int32 runtime·kevent(int kq, Kevent *changelist, int nchanges, Kevent *eventlist, int nevents, Timespec *timeout); 324 TEXT runtime·kevent(SB),NOSPLIT,$0 325 MOVL fd+0(FP), DI 326 MOVQ ev1+8(FP), SI 327 MOVL nev1+16(FP), DX 328 MOVQ ev2+24(FP), R10 329 MOVL nev2+32(FP), R8 330 MOVQ ts+40(FP), R9 331 MOVL $363, AX 332 SYSCALL 333 JCC 2(PC) 334 NEGQ AX 335 MOVL AX, ret+48(FP) 336 RET 337 338 // void runtime·closeonexec(int32 fd); 339 TEXT runtime·closeonexec(SB),NOSPLIT,$0 340 MOVL fd+0(FP), DI // fd 341 MOVQ $2, SI // F_SETFD 342 MOVQ $1, DX // FD_CLOEXEC 343 MOVL $92, AX // fcntl 344 SYSCALL 345 RET