github.com/varialus/godfly@v0.0.0-20130904042352-1934f9f095ab/src/pkg/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 "zasm_GOOS_GOARCH.h" 10 #include "../../cmd/ld/textflag.h" 11 12 TEXT runtime·sys_umtx_sleep(SB),NOSPLIT,$0 13 MOVQ 8(SP), DI // arg 1 - ptr 14 MOVL 16(SP), SI // arg 2 - value 15 MOVL 20(SP), DX // arg 3 - timeout 16 MOVL $469, AX // umtx_sleep 17 SYSCALL 18 JCC 2(PC) 19 NEGQ AX 20 RET 21 22 TEXT runtime·sys_umtx_wakeup(SB),NOSPLIT,$0 23 MOVQ 8(SP), DI // arg 1 - ptr 24 MOVL 16(SP), SI // arg 2 - count 25 MOVL $470, AX // umtx_wakeup 26 SYSCALL 27 JCC 2(PC) 28 NEGQ AX 29 RET 30 31 TEXT runtime·lwp_create(SB),NOSPLIT,$0 32 MOVQ 8(SP), DI // arg 1 - params 33 MOVL $495, AX // lwp_create 34 SYSCALL 35 RET 36 37 TEXT runtime·lwp_start(SB),NOSPLIT,$0 38 MOVQ DI, R13 // m 39 40 // set up FS to point at m->tls 41 LEAQ m_tls(R13), DI 42 CALL runtime·settls(SB) // smashes DI 43 44 // set up m, g 45 get_tls(CX) 46 MOVQ R13, m(CX) 47 MOVQ m_g0(R13), DI 48 MOVQ DI, g(CX) 49 50 CALL runtime·stackcheck(SB) 51 CALL runtime·mstart(SB) 52 53 MOVQ 0, AX // crash (not reached) 54 55 // Exit the entire program (like C exit) 56 TEXT runtime·exit(SB),NOSPLIT,$-8 57 MOVL 8(SP), DI // arg 1 exit status 58 MOVL $1, AX 59 SYSCALL 60 MOVL $0xf1, 0xf1 // crash 61 RET 62 63 TEXT runtime·exit1(SB),NOSPLIT,$-8 64 MOVQ 8(SP), DI // arg 1 exit status 65 MOVL $431, AX 66 SYSCALL 67 MOVL $0xf1, 0xf1 // crash 68 RET 69 70 TEXT runtime·open(SB),NOSPLIT,$-8 71 MOVQ 8(SP), DI // arg 1 pathname 72 MOVL 16(SP), SI // arg 2 flags 73 MOVL 20(SP), DX // arg 3 mode 74 MOVL $5, AX 75 SYSCALL 76 RET 77 78 TEXT runtime·close(SB),NOSPLIT,$-8 79 MOVL 8(SP), DI // arg 1 fd 80 MOVL $6, AX 81 SYSCALL 82 RET 83 84 TEXT runtime·read(SB),NOSPLIT,$-8 85 MOVL 8(SP), DI // arg 1 fd 86 MOVQ 16(SP), SI // arg 2 buf 87 MOVL 24(SP), DX // arg 3 count 88 MOVL $3, AX 89 SYSCALL 90 RET 91 92 TEXT runtime·write(SB),NOSPLIT,$-8 93 MOVL 8(SP), DI // arg 1 fd 94 MOVQ 16(SP), SI // arg 2 buf 95 MOVL 24(SP), DX // arg 3 count 96 MOVL $4, AX 97 SYSCALL 98 RET 99 100 TEXT runtime·getrlimit(SB),NOSPLIT,$-8 101 MOVL 8(SP), DI 102 MOVQ 16(SP), SI 103 MOVL $194, AX 104 SYSCALL 105 RET 106 107 TEXT runtime·raise(SB),NOSPLIT,$16 108 MOVL $496, AX // lwp_gettid 109 SYSCALL 110 MOVQ $-1, DI // arg 1 - pid 111 MOVQ 8(SP), DI // arg 2 - tid 112 MOVL sig+0(FP), SI // arg 3 - signum 113 MOVL $497, AX // lwp_kill 114 SYSCALL 115 RET 116 117 TEXT runtime·setitimer(SB), NOSPLIT, $-8 118 MOVL 8(SP), DI 119 MOVQ 16(SP), SI 120 MOVQ 24(SP), DX 121 MOVL $83, AX 122 SYSCALL 123 RET 124 125 // func now() (sec int64, nsec int32) 126 TEXT time·now(SB), NOSPLIT, $32 127 MOVL $232, AX 128 MOVQ $0, DI 129 LEAQ 8(SP), SI 130 SYSCALL 131 MOVQ 8(SP), AX // sec 132 MOVQ 16(SP), DX // nsec 133 134 // sec is in AX, nsec in DX 135 MOVQ AX, sec+0(FP) 136 MOVL DX, nsec+8(FP) 137 RET 138 139 TEXT runtime·nanotime(SB), NOSPLIT, $32 140 MOVL $232, AX 141 MOVQ $0, DI 142 LEAQ 8(SP), SI 143 SYSCALL 144 MOVQ 8(SP), AX // sec 145 MOVQ 16(SP), DX // nsec 146 147 // sec is in AX, nsec in DX 148 // return nsec in AX 149 IMULQ $1000000000, AX 150 ADDQ DX, AX 151 RET 152 153 TEXT runtime·sigaction(SB),NOSPLIT,$-8 154 MOVL 8(SP), DI // arg 1 sig 155 MOVQ 16(SP), SI // arg 2 act 156 MOVQ 24(SP), DX // arg 3 oact 157 MOVL $342, AX 158 SYSCALL 159 JCC 2(PC) 160 MOVL $0xf1, 0xf1 // crash 161 RET 162 163 TEXT runtime·sigtramp(SB),NOSPLIT,$64 164 get_tls(BX) 165 166 // check that m exists 167 MOVQ m(BX), BP 168 CMPQ BP, $0 169 JNE 5(PC) 170 MOVQ DI, 0(SP) 171 MOVQ $runtime·badsignal(SB), AX 172 CALL AX 173 RET 174 175 // save g 176 MOVQ g(BX), R10 177 MOVQ R10, 40(SP) 178 179 // g = m->signal 180 MOVQ m_gsignal(BP), BP 181 MOVQ BP, g(BX) 182 183 MOVQ DI, 0(SP) 184 MOVQ SI, 8(SP) 185 MOVQ DX, 16(SP) 186 MOVQ R10, 24(SP) 187 188 CALL runtime·sighandler(SB) 189 190 // restore g 191 get_tls(BX) 192 MOVQ 40(SP), R10 193 MOVQ R10, g(BX) 194 RET 195 196 TEXT runtime·mmap(SB),NOSPLIT,$0 197 MOVQ 8(SP), DI // arg 1 - addr 198 MOVQ 16(SP), SI // arg 2 - len 199 MOVL 24(SP), DX // arg 3 - prot 200 MOVL 28(SP), R10 // arg 4 - flags 201 MOVL 32(SP), R8 // arg 5 - fd 202 MOVL 36(SP), R9 203 SUBQ $16, SP 204 MOVQ R9, 8(SP) // arg 7 - offset (passed on stack) 205 MOVQ $0, R9 // arg 6 - pad 206 MOVL $197, AX 207 SYSCALL 208 ADDQ $16, SP 209 RET 210 211 TEXT runtime·munmap(SB),NOSPLIT,$0 212 MOVQ 8(SP), DI // arg 1 addr 213 MOVQ 16(SP), SI // arg 2 len 214 MOVL $73, AX 215 SYSCALL 216 JCC 2(PC) 217 MOVL $0xf1, 0xf1 // crash 218 RET 219 220 TEXT runtime·madvise(SB),NOSPLIT,$0 221 MOVQ 8(SP), DI 222 MOVQ 16(SP), SI 223 MOVQ 24(SP), DX 224 MOVQ $75, AX // madvise 225 SYSCALL 226 // ignore failure - maybe pages are locked 227 RET 228 229 TEXT runtime·sigaltstack(SB),NOSPLIT,$-8 230 MOVQ new+8(SP), DI 231 MOVQ old+16(SP), SI 232 MOVQ $53, AX 233 SYSCALL 234 JCC 2(PC) 235 MOVL $0xf1, 0xf1 // crash 236 RET 237 238 TEXT runtime·usleep(SB),NOSPLIT,$16 239 MOVL $0, DX 240 MOVL usec+0(FP), AX 241 MOVL $1000000, CX 242 DIVL CX 243 MOVQ AX, 0(SP) // tv_sec 244 MOVL $1000, AX 245 MULL DX 246 MOVQ AX, 8(SP) // tv_nsec 247 248 MOVQ SP, DI // arg 1 - rqtp 249 MOVQ $0, SI // arg 2 - rmtp 250 MOVL $240, AX // sys_nanosleep 251 SYSCALL 252 RET 253 254 // set tls base to DI 255 TEXT runtime·settls(SB),NOSPLIT,$16 256 ADDQ $16, DI // adjust for ELF: wants to use -16(FS) and -8(FS) for g and m 257 MOVQ DI, 0(SP) 258 MOVQ $16, 8(SP) 259 MOVQ $0, DI // arg 1 - which 260 MOVQ SP, SI // arg 2 - tls_info 261 MOVQ $16, DX // arg 3 - infosize 262 MOVQ $472, AX // set_tls_area 263 SYSCALL 264 JCC 2(PC) 265 MOVL $0xf1, 0xf1 // crash 266 RET 267 268 TEXT runtime·sysctl(SB),NOSPLIT,$0 269 MOVQ 8(SP), DI // arg 1 - name 270 MOVL 16(SP), SI // arg 2 - namelen 271 MOVQ 24(SP), DX // arg 3 - oldp 272 MOVQ 32(SP), R10 // arg 4 - oldlenp 273 MOVQ 40(SP), R8 // arg 5 - newp 274 MOVQ 48(SP), R9 // arg 6 - newlen 275 MOVQ $202, AX // sys___sysctl 276 SYSCALL 277 JCC 3(PC) 278 NEGQ AX 279 RET 280 MOVL $0, AX 281 RET 282 283 TEXT runtime·osyield(SB),NOSPLIT,$-4 284 MOVL $331, AX // sys_sched_yield 285 SYSCALL 286 RET 287 288 TEXT runtime·sigprocmask(SB),NOSPLIT,$0 289 MOVL $3, DI // arg 1 - how (SIG_SETMASK) 290 MOVQ 8(SP), SI // arg 2 - set 291 MOVQ 16(SP), DX // arg 3 - oset 292 MOVL $340, AX // sys_sigprocmask 293 SYSCALL 294 JAE 2(PC) 295 MOVL $0xf1, 0xf1 // crash 296 RET 297 298 // int32 runtime·kqueue(void); 299 TEXT runtime·kqueue(SB),NOSPLIT,$0 300 MOVQ $0, DI 301 MOVQ $0, SI 302 MOVQ $0, DX 303 MOVL $362, AX 304 SYSCALL 305 JCC 2(PC) 306 NEGQ AX 307 RET 308 309 // int32 runtime·kevent(int kq, Kevent *changelist, int nchanges, Kevent *eventlist, int nevents, Timespec *timeout); 310 TEXT runtime·kevent(SB),NOSPLIT,$0 311 MOVL 8(SP), DI 312 MOVQ 16(SP), SI 313 MOVL 24(SP), DX 314 MOVQ 32(SP), R10 315 MOVL 40(SP), R8 316 MOVQ 48(SP), R9 317 MOVL $363, AX 318 SYSCALL 319 JCC 2(PC) 320 NEGQ AX 321 RET 322 323 // void runtime·closeonexec(int32 fd); 324 TEXT runtime·closeonexec(SB),NOSPLIT,$0 325 MOVL 8(SP), DI // fd 326 MOVQ $2, SI // F_SETFD 327 MOVQ $1, DX // FD_CLOEXEC 328 MOVL $92, AX // fcntl 329 SYSCALL 330 RET