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sys_dragonfly_amd64.s
// Copyright 2009 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 AMD64, FreeBSD // /usr/src/sys/kern/syscalls.master for syscall numbers. // #include "go_asm.h" #include "go_tls.h" #include "textflag.h" #include "cgo/abi_amd64.h" TEXT runtime·sys_umtx_sleep(SB),NOSPLIT,$0 MOVQ addr+0(FP), DI // arg 1 - ptr MOVL val+8(FP), SI // arg 2 - value MOVL timeout+12(FP), DX // arg 3 - timeout MOVL $469, AX // umtx_sleep SYSCALL JCC 2(PC) NEGQ AX MOVL AX, ret+16(FP) RET TEXT runtime·sys_umtx_wakeup(SB),NOSPLIT,$0 MOVQ addr+0(FP), DI // arg 1 - ptr MOVL val+8(FP), SI // arg 2 - count MOVL $470, AX // umtx_wakeup SYSCALL JCC 2(PC) NEGQ AX MOVL AX, ret+16(FP) RET TEXT runtime·lwp_create(SB),NOSPLIT,$0 MOVQ param+0(FP), DI // arg 1 - params MOVL $495, AX // lwp_create SYSCALL MOVL AX, ret+8(FP) RET TEXT runtime·lwp_start(SB),NOSPLIT,$0 MOVQ DI, R13 // m // set up FS to point at m->tls LEAQ m_tls(R13), DI CALL runtime·settls(SB) // smashes DI // set up m, g get_tls(CX) MOVQ m_g0(R13), DI MOVQ R13, g_m(DI) MOVQ DI, g(CX) CALL runtime·stackcheck(SB) CALL runtime·mstart(SB) MOVQ 0, AX // crash (not reached) // Exit the entire program (like C exit) TEXT runtime·exit(SB),NOSPLIT,$-8 MOVL code+0(FP), DI // arg 1 exit status MOVL $1, AX SYSCALL MOVL $0xf1, 0xf1 // crash RET // func exitThread(wait *atomic.Uint32) TEXT runtime·exitThread(SB),NOSPLIT,$0-8 MOVQ wait+0(FP), AX // We're done using the stack. MOVL $0, (AX) MOVL $0x10000, DI // arg 1 how - EXTEXIT_LWP MOVL $0, SI // arg 2 status MOVL $0, DX // arg 3 addr MOVL $494, AX // extexit SYSCALL MOVL $0xf1, 0xf1 // crash JMP 0(PC) TEXT runtime·open(SB),NOSPLIT,$-8 MOVQ name+0(FP), DI // arg 1 pathname MOVL mode+8(FP), SI // arg 2 flags MOVL perm+12(FP), DX // arg 3 mode MOVL $5, AX SYSCALL JCC 2(PC) MOVL $-1, AX MOVL AX, ret+16(FP) RET TEXT runtime·closefd(SB),NOSPLIT,$-8 MOVL fd+0(FP), DI // arg 1 fd MOVL $6, AX SYSCALL JCC 2(PC) MOVL $-1, AX MOVL AX, ret+8(FP) RET TEXT runtime·read(SB),NOSPLIT,$-8 MOVL fd+0(FP), DI // arg 1 fd MOVQ p+8(FP), SI // arg 2 buf MOVL n+16(FP), DX // arg 3 count MOVL $3, AX SYSCALL JCC 2(PC) NEGL AX // caller expects negative errno MOVL AX, ret+24(FP) RET // func pipe2(flags int32) (r, w int32, errno int32) TEXT runtime·pipe2(SB),NOSPLIT,$0-20 MOVL $0, DI // dragonfly expects flags as the 2nd argument MOVL flags+0(FP), SI MOVL $538, AX SYSCALL JCC pipe2ok MOVL $-1,r+8(FP) MOVL $-1,w+12(FP) MOVL AX, errno+16(FP) RET pipe2ok: MOVL AX, r+8(FP) MOVL DX, w+12(FP) MOVL $0, errno+16(FP) RET TEXT runtime·write1(SB),NOSPLIT,$-8 MOVQ fd+0(FP), DI // arg 1 fd MOVQ p+8(FP), SI // arg 2 buf MOVL n+16(FP), DX // arg 3 count MOVL $4, AX SYSCALL JCC 2(PC) NEGL AX // caller expects negative errno MOVL AX, ret+24(FP) RET TEXT runtime·lwp_gettid(SB),NOSPLIT,$0-4 MOVL $496, AX // lwp_gettid SYSCALL MOVL AX, ret+0(FP) RET TEXT runtime·lwp_kill(SB),NOSPLIT,$0-16 MOVL pid+0(FP), DI // arg 1 - pid MOVL tid+4(FP), SI // arg 2 - tid MOVQ sig+8(FP), DX // arg 3 - signum MOVL $497, AX // lwp_kill SYSCALL RET TEXT runtime·raiseproc(SB),NOSPLIT,$0 MOVL $20, AX // getpid SYSCALL MOVQ AX, DI // arg 1 - pid MOVL sig+0(FP), SI // arg 2 - signum MOVL $37, AX // kill SYSCALL RET TEXT runtime·setitimer(SB), NOSPLIT, $-8 MOVL mode+0(FP), DI MOVQ new+8(FP), SI MOVQ old+16(FP), DX MOVL $83, AX SYSCALL RET // func walltime() (sec int64, nsec int32) TEXT runtime·walltime(SB), NOSPLIT, $32 MOVL $232, AX // clock_gettime MOVQ $0, DI // CLOCK_REALTIME LEAQ 8(SP), SI SYSCALL MOVQ 8(SP), AX // sec MOVQ 16(SP), DX // nsec // sec is in AX, nsec in DX MOVQ AX, sec+0(FP) MOVL DX, nsec+8(FP) RET TEXT runtime·nanotime1(SB), NOSPLIT, $32 MOVL $232, AX MOVQ $4, DI // CLOCK_MONOTONIC LEAQ 8(SP), SI SYSCALL MOVQ 8(SP), AX // sec MOVQ 16(SP), DX // nsec // sec is in AX, nsec in DX // return nsec in AX IMULQ $1000000000, AX ADDQ DX, AX MOVQ AX, ret+0(FP) RET TEXT runtime·sigaction(SB),NOSPLIT,$-8 MOVL sig+0(FP), DI // arg 1 sig MOVQ new+8(FP), SI // arg 2 act MOVQ old+16(FP), DX // arg 3 oact MOVL $342, AX SYSCALL JCC 2(PC) MOVL $0xf1, 0xf1 // crash RET TEXT runtime·sigfwd(SB),NOSPLIT,$0-32 MOVQ fn+0(FP), AX MOVL sig+8(FP), DI MOVQ info+16(FP), SI MOVQ ctx+24(FP), DX MOVQ SP, BX // callee-saved ANDQ $~15, SP // alignment for x86_64 ABI CALL AX MOVQ BX, SP RET // Called using C ABI. TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME|NOFRAME,$0 // Transition from C ABI to Go ABI. PUSH_REGS_HOST_TO_ABI0() // Set up ABIInternal environment: g in R14, cleared X15. get_tls(R12) MOVQ g(R12), R14 PXOR X15, X15 // Reserve space for spill slots. NOP SP // disable vet stack checking ADJSP $24 // Call into the Go signal handler MOVQ DI, AX // sig MOVQ SI, BX // info MOVQ DX, CX // ctx CALL ·sigtrampgo<ABIInternal>(SB) ADJSP $-24 POP_REGS_HOST_TO_ABI0() RET TEXT runtime·mmap(SB),NOSPLIT,$0 MOVQ addr+0(FP), DI // arg 1 - addr MOVQ n+8(FP), SI // arg 2 - len MOVL prot+16(FP), DX // arg 3 - prot MOVL flags+20(FP), R10 // arg 4 - flags MOVL fd+24(FP), R8 // arg 5 - fd MOVL off+28(FP), R9 SUBQ $16, SP MOVQ R9, 8(SP) // arg 7 - offset (passed on stack) MOVQ $0, R9 // arg 6 - pad MOVL $197, AX SYSCALL JCC ok ADDQ $16, SP MOVQ $0, p+32(FP) MOVQ AX, err+40(FP) RET ok: ADDQ $16, SP MOVQ AX, p+32(FP) MOVQ $0, err+40(FP) RET TEXT runtime·munmap(SB),NOSPLIT,$0 MOVQ addr+0(FP), DI // arg 1 addr MOVQ n+8(FP), SI // arg 2 len MOVL $73, AX SYSCALL JCC 2(PC) MOVL $0xf1, 0xf1 // crash RET TEXT runtime·madvise(SB),NOSPLIT,$0 MOVQ addr+0(FP), DI MOVQ n+8(FP), SI MOVL flags+16(FP), DX MOVQ $75, AX // madvise SYSCALL JCC 2(PC) MOVL $-1, AX MOVL AX, ret+24(FP) RET TEXT runtime·sigaltstack(SB),NOSPLIT,$-8 MOVQ new+0(FP), DI MOVQ old+8(FP), SI MOVQ $53, AX SYSCALL JCC 2(PC) MOVL $0xf1, 0xf1 // crash RET TEXT runtime·usleep(SB),NOSPLIT,$16 MOVL $0, DX MOVL usec+0(FP), AX MOVL $1000000, CX DIVL CX MOVQ AX, 0(SP) // tv_sec MOVL $1000, AX MULL DX MOVQ AX, 8(SP) // tv_nsec MOVQ SP, DI // arg 1 - rqtp MOVQ $0, SI // arg 2 - rmtp MOVL $240, AX // sys_nanosleep SYSCALL RET // set tls base to DI TEXT runtime·settls(SB),NOSPLIT,$16 ADDQ $8, DI // adjust for ELF: wants to use -8(FS) for g MOVQ DI, 0(SP) MOVQ $16, 8(SP) MOVQ $0, DI // arg 1 - which MOVQ SP, SI // arg 2 - tls_info MOVQ $16, DX // arg 3 - infosize MOVQ $472, AX // set_tls_area SYSCALL JCC 2(PC) MOVL $0xf1, 0xf1 // crash RET TEXT runtime·sysctl(SB),NOSPLIT,$0 MOVQ mib+0(FP), DI // arg 1 - name MOVL miblen+8(FP), SI // arg 2 - namelen MOVQ out+16(FP), DX // arg 3 - oldp MOVQ size+24(FP), R10 // arg 4 - oldlenp MOVQ dst+32(FP), R8 // arg 5 - newp MOVQ ndst+40(FP), R9 // arg 6 - newlen MOVQ $202, AX // sys___sysctl SYSCALL JCC 4(PC) NEGQ AX MOVL AX, ret+48(FP) RET MOVL $0, AX MOVL AX, ret+48(FP) RET TEXT runtime·osyield(SB),NOSPLIT,$-4 MOVL $331, AX // sys_sched_yield SYSCALL RET TEXT runtime·sigprocmask(SB),NOSPLIT,$0 MOVL how+0(FP), DI // arg 1 - how MOVQ new+8(FP), SI // arg 2 - set MOVQ old+16(FP), DX // arg 3 - oset MOVL $340, AX // sys_sigprocmask SYSCALL JAE 2(PC) MOVL $0xf1, 0xf1 // crash RET // int32 runtime·kqueue(void); TEXT runtime·kqueue(SB),NOSPLIT,$0 MOVQ $0, DI MOVQ $0, SI MOVQ $0, DX MOVL $362, AX SYSCALL JCC 2(PC) NEGQ AX MOVL AX, 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 MOVL kq+0(FP), DI MOVQ ch+8(FP), SI MOVL nch+16(FP), DX MOVQ ev+24(FP), R10 MOVL nev+32(FP), R8 MOVQ ts+40(FP), R9 MOVL $363, AX SYSCALL JCC 2(PC) NEGQ AX MOVL AX, ret+48(FP) RET // func fcntl(fd, cmd, arg int32) (ret int32, errno int32) TEXT runtime·fcntl(SB),NOSPLIT,$0 MOVL fd+0(FP), DI // fd MOVL cmd+4(FP), SI // cmd MOVL arg+8(FP), DX // arg MOVL $92, AX // fcntl SYSCALL JCC noerr MOVL $-1, ret+16(FP) MOVL AX, errno+20(FP) RET noerr: MOVL AX, ret+16(FP) MOVL $0, errno+20(FP) RET // func issetugid() int32 TEXT runtime·issetugid(SB),NOSPLIT,$0 MOVQ $0, DI MOVQ $0, SI MOVQ $0, DX MOVL $253, AX SYSCALL MOVL AX, ret+0(FP) RET
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