github.com/lzhfromustc/gofuzz@v0.0.0-20211116160056-151b3108bbd1/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 // func exitThread(wait *uint32) 68 TEXT runtime·exitThread(SB),NOSPLIT,$0-8 69 MOVQ wait+0(FP), AX 70 // We're done using the stack. 71 MOVL $0, (AX) 72 MOVL $0x10000, DI // arg 1 how - EXTEXIT_LWP 73 MOVL $0, SI // arg 2 status 74 MOVL $0, DX // arg 3 addr 75 MOVL $494, AX // extexit 76 SYSCALL 77 MOVL $0xf1, 0xf1 // crash 78 JMP 0(PC) 79 80 TEXT runtime·open(SB),NOSPLIT,$-8 81 MOVQ name+0(FP), DI // arg 1 pathname 82 MOVL mode+8(FP), SI // arg 2 flags 83 MOVL perm+12(FP), DX // arg 3 mode 84 MOVL $5, AX 85 SYSCALL 86 JCC 2(PC) 87 MOVL $-1, AX 88 MOVL AX, ret+16(FP) 89 RET 90 91 TEXT runtime·closefd(SB),NOSPLIT,$-8 92 MOVL fd+0(FP), DI // arg 1 fd 93 MOVL $6, AX 94 SYSCALL 95 JCC 2(PC) 96 MOVL $-1, AX 97 MOVL AX, ret+8(FP) 98 RET 99 100 TEXT runtime·read(SB),NOSPLIT,$-8 101 MOVL fd+0(FP), DI // arg 1 fd 102 MOVQ p+8(FP), SI // arg 2 buf 103 MOVL n+16(FP), DX // arg 3 count 104 MOVL $3, AX 105 SYSCALL 106 JCC 2(PC) 107 NEGL AX // caller expects negative errno 108 MOVL AX, ret+24(FP) 109 RET 110 111 // func pipe() (r, w int32, errno int32) 112 TEXT runtime·pipe(SB),NOSPLIT,$0-12 113 MOVL $42, AX 114 SYSCALL 115 JCC pipeok 116 MOVL $-1,r+0(FP) 117 MOVL $-1,w+4(FP) 118 MOVL AX, errno+8(FP) 119 RET 120 pipeok: 121 MOVL AX, r+0(FP) 122 MOVL DX, w+4(FP) 123 MOVL $0, errno+8(FP) 124 RET 125 126 TEXT runtime·write1(SB),NOSPLIT,$-8 127 MOVQ fd+0(FP), DI // arg 1 fd 128 MOVQ p+8(FP), SI // arg 2 buf 129 MOVL n+16(FP), DX // arg 3 count 130 MOVL $4, AX 131 SYSCALL 132 JCC 2(PC) 133 NEGL AX // caller expects negative errno 134 MOVL AX, ret+24(FP) 135 RET 136 137 TEXT runtime·lwp_gettid(SB),NOSPLIT,$0-4 138 MOVL $496, AX // lwp_gettid 139 SYSCALL 140 MOVL AX, ret+0(FP) 141 RET 142 143 TEXT runtime·lwp_kill(SB),NOSPLIT,$0-16 144 MOVL pid+0(FP), DI // arg 1 - pid 145 MOVL tid+4(FP), SI // arg 2 - tid 146 MOVQ sig+8(FP), DX // arg 3 - signum 147 MOVL $497, AX // lwp_kill 148 SYSCALL 149 RET 150 151 TEXT runtime·raiseproc(SB),NOSPLIT,$0 152 MOVL $20, AX // getpid 153 SYSCALL 154 MOVQ AX, DI // arg 1 - pid 155 MOVL sig+0(FP), SI // arg 2 - signum 156 MOVL $37, AX // kill 157 SYSCALL 158 RET 159 160 TEXT runtime·setitimer(SB), NOSPLIT, $-8 161 MOVL mode+0(FP), DI 162 MOVQ new+8(FP), SI 163 MOVQ old+16(FP), DX 164 MOVL $83, AX 165 SYSCALL 166 RET 167 168 // func walltime1() (sec int64, nsec int32) 169 TEXT runtime·walltime1(SB), NOSPLIT, $32 170 MOVL $232, AX // clock_gettime 171 MOVQ $0, DI // CLOCK_REALTIME 172 LEAQ 8(SP), SI 173 SYSCALL 174 MOVQ 8(SP), AX // sec 175 MOVQ 16(SP), DX // nsec 176 177 // sec is in AX, nsec in DX 178 MOVQ AX, sec+0(FP) 179 MOVL DX, nsec+8(FP) 180 RET 181 182 TEXT runtime·nanotime1(SB), NOSPLIT, $32 183 MOVL $232, AX 184 MOVQ $4, DI // CLOCK_MONOTONIC 185 LEAQ 8(SP), SI 186 SYSCALL 187 MOVQ 8(SP), AX // sec 188 MOVQ 16(SP), DX // nsec 189 190 // sec is in AX, nsec in DX 191 // return nsec in AX 192 IMULQ $1000000000, AX 193 ADDQ DX, AX 194 MOVQ AX, ret+0(FP) 195 RET 196 197 TEXT runtime·sigaction(SB),NOSPLIT,$-8 198 MOVL sig+0(FP), DI // arg 1 sig 199 MOVQ new+8(FP), SI // arg 2 act 200 MOVQ old+16(FP), DX // arg 3 oact 201 MOVL $342, AX 202 SYSCALL 203 JCC 2(PC) 204 MOVL $0xf1, 0xf1 // crash 205 RET 206 207 TEXT runtime·sigfwd(SB),NOSPLIT,$0-32 208 MOVQ fn+0(FP), AX 209 MOVL sig+8(FP), DI 210 MOVQ info+16(FP), SI 211 MOVQ ctx+24(FP), DX 212 PUSHQ BP 213 MOVQ SP, BP 214 ANDQ $~15, SP // alignment for x86_64 ABI 215 CALL AX 216 MOVQ BP, SP 217 POPQ BP 218 RET 219 220 TEXT runtime·sigtramp(SB),NOSPLIT,$72 221 // Save callee-saved C registers, since the caller may be a C signal handler. 222 MOVQ BX, bx-8(SP) 223 MOVQ BP, bp-16(SP) // save in case GOEXPERIMENT=noframepointer is set 224 MOVQ R12, r12-24(SP) 225 MOVQ R13, r13-32(SP) 226 MOVQ R14, r14-40(SP) 227 MOVQ R15, r15-48(SP) 228 // We don't save mxcsr or the x87 control word because sigtrampgo doesn't 229 // modify them. 230 231 MOVQ DX, ctx-56(SP) 232 MOVQ SI, info-64(SP) 233 MOVQ DI, signum-72(SP) 234 CALL runtime·sigtrampgo(SB) 235 236 MOVQ r15-48(SP), R15 237 MOVQ r14-40(SP), R14 238 MOVQ r13-32(SP), R13 239 MOVQ r12-24(SP), R12 240 MOVQ bp-16(SP), BP 241 MOVQ bx-8(SP), BX 242 RET 243 244 TEXT runtime·mmap(SB),NOSPLIT,$0 245 MOVQ addr+0(FP), DI // arg 1 - addr 246 MOVQ n+8(FP), SI // arg 2 - len 247 MOVL prot+16(FP), DX // arg 3 - prot 248 MOVL flags+20(FP), R10 // arg 4 - flags 249 MOVL fd+24(FP), R8 // arg 5 - fd 250 MOVL off+28(FP), R9 251 SUBQ $16, SP 252 MOVQ R9, 8(SP) // arg 7 - offset (passed on stack) 253 MOVQ $0, R9 // arg 6 - pad 254 MOVL $197, AX 255 SYSCALL 256 JCC ok 257 ADDQ $16, SP 258 MOVQ $0, p+32(FP) 259 MOVQ AX, err+40(FP) 260 RET 261 ok: 262 ADDQ $16, SP 263 MOVQ AX, p+32(FP) 264 MOVQ $0, err+40(FP) 265 RET 266 267 TEXT runtime·munmap(SB),NOSPLIT,$0 268 MOVQ addr+0(FP), DI // arg 1 addr 269 MOVQ n+8(FP), SI // arg 2 len 270 MOVL $73, AX 271 SYSCALL 272 JCC 2(PC) 273 MOVL $0xf1, 0xf1 // crash 274 RET 275 276 TEXT runtime·madvise(SB),NOSPLIT,$0 277 MOVQ addr+0(FP), DI 278 MOVQ n+8(FP), SI 279 MOVL flags+16(FP), DX 280 MOVQ $75, AX // madvise 281 SYSCALL 282 JCC 2(PC) 283 MOVL $-1, AX 284 MOVL AX, ret+24(FP) 285 RET 286 287 TEXT runtime·sigaltstack(SB),NOSPLIT,$-8 288 MOVQ new+0(FP), DI 289 MOVQ old+8(FP), SI 290 MOVQ $53, AX 291 SYSCALL 292 JCC 2(PC) 293 MOVL $0xf1, 0xf1 // crash 294 RET 295 296 TEXT runtime·usleep(SB),NOSPLIT,$16 297 MOVL $0, DX 298 MOVL usec+0(FP), AX 299 MOVL $1000000, CX 300 DIVL CX 301 MOVQ AX, 0(SP) // tv_sec 302 MOVL $1000, AX 303 MULL DX 304 MOVQ AX, 8(SP) // tv_nsec 305 306 MOVQ SP, DI // arg 1 - rqtp 307 MOVQ $0, SI // arg 2 - rmtp 308 MOVL $240, AX // sys_nanosleep 309 SYSCALL 310 RET 311 312 // set tls base to DI 313 TEXT runtime·settls(SB),NOSPLIT,$16 314 ADDQ $8, DI // adjust for ELF: wants to use -8(FS) for g 315 MOVQ DI, 0(SP) 316 MOVQ $16, 8(SP) 317 MOVQ $0, DI // arg 1 - which 318 MOVQ SP, SI // arg 2 - tls_info 319 MOVQ $16, DX // arg 3 - infosize 320 MOVQ $472, AX // set_tls_area 321 SYSCALL 322 JCC 2(PC) 323 MOVL $0xf1, 0xf1 // crash 324 RET 325 326 TEXT runtime·sysctl(SB),NOSPLIT,$0 327 MOVQ mib+0(FP), DI // arg 1 - name 328 MOVL miblen+8(FP), SI // arg 2 - namelen 329 MOVQ out+16(FP), DX // arg 3 - oldp 330 MOVQ size+24(FP), R10 // arg 4 - oldlenp 331 MOVQ dst+32(FP), R8 // arg 5 - newp 332 MOVQ ndst+40(FP), R9 // arg 6 - newlen 333 MOVQ $202, AX // sys___sysctl 334 SYSCALL 335 JCC 4(PC) 336 NEGQ AX 337 MOVL AX, ret+48(FP) 338 RET 339 MOVL $0, AX 340 MOVL AX, ret+48(FP) 341 RET 342 343 TEXT runtime·osyield(SB),NOSPLIT,$-4 344 MOVL $331, AX // sys_sched_yield 345 SYSCALL 346 RET 347 348 TEXT runtime·sigprocmask(SB),NOSPLIT,$0 349 MOVL how+0(FP), DI // arg 1 - how 350 MOVQ new+8(FP), SI // arg 2 - set 351 MOVQ old+16(FP), DX // arg 3 - oset 352 MOVL $340, AX // sys_sigprocmask 353 SYSCALL 354 JAE 2(PC) 355 MOVL $0xf1, 0xf1 // crash 356 RET 357 358 // int32 runtime·kqueue(void); 359 TEXT runtime·kqueue(SB),NOSPLIT,$0 360 MOVQ $0, DI 361 MOVQ $0, SI 362 MOVQ $0, DX 363 MOVL $362, AX 364 SYSCALL 365 JCC 2(PC) 366 NEGQ AX 367 MOVL AX, ret+0(FP) 368 RET 369 370 // int32 runtime·kevent(int kq, Kevent *changelist, int nchanges, Kevent *eventlist, int nevents, Timespec *timeout); 371 TEXT runtime·kevent(SB),NOSPLIT,$0 372 MOVL kq+0(FP), DI 373 MOVQ ch+8(FP), SI 374 MOVL nch+16(FP), DX 375 MOVQ ev+24(FP), R10 376 MOVL nev+32(FP), R8 377 MOVQ ts+40(FP), R9 378 MOVL $363, AX 379 SYSCALL 380 JCC 2(PC) 381 NEGQ AX 382 MOVL AX, ret+48(FP) 383 RET 384 385 // void runtime·closeonexec(int32 fd); 386 TEXT runtime·closeonexec(SB),NOSPLIT,$0 387 MOVL fd+0(FP), DI // fd 388 MOVQ $2, SI // F_SETFD 389 MOVQ $1, DX // FD_CLOEXEC 390 MOVL $92, AX // fcntl 391 SYSCALL 392 RET 393 394 // func runtime·setNonblock(int32 fd) 395 TEXT runtime·setNonblock(SB),NOSPLIT,$0-4 396 MOVL fd+0(FP), DI // fd 397 MOVQ $3, SI // F_GETFL 398 MOVQ $0, DX 399 MOVL $92, AX // fcntl 400 SYSCALL 401 MOVL fd+0(FP), DI // fd 402 MOVQ $4, SI // F_SETFL 403 MOVQ $4, DX // O_NONBLOCK 404 ORL AX, DX 405 MOVL $92, AX // fcntl 406 SYSCALL 407 RET