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Editing: sys_netbsd_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, NetBSD // /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" #define CLOCK_REALTIME 0 #define CLOCK_MONOTONIC 3 #define SYS_exit 1 #define SYS_read 3 #define SYS_write 4 #define SYS_open 5 #define SYS_close 6 #define SYS_getpid 20 #define SYS_kill 37 #define SYS_munmap 73 #define SYS_madvise 75 #define SYS_fcntl 92 #define SYS_mmap 197 #define SYS___sysctl 202 #define SYS___sigaltstack14 281 #define SYS___sigprocmask14 293 #define SYS_issetugid 305 #define SYS_getcontext 307 #define SYS_setcontext 308 #define SYS__lwp_create 309 #define SYS__lwp_exit 310 #define SYS__lwp_self 311 #define SYS__lwp_setprivate 317 #define SYS__lwp_kill 318 #define SYS__lwp_unpark 321 #define SYS___sigaction_sigtramp 340 #define SYS_kqueue 344 #define SYS_sched_yield 350 #define SYS___setitimer50 425 #define SYS___clock_gettime50 427 #define SYS___nanosleep50 430 #define SYS___kevent50 435 #define SYS____lwp_park60 478 // int32 lwp_create(void *context, uintptr flags, void *lwpid) TEXT runtime·lwp_create(SB),NOSPLIT,$0 MOVQ ctxt+0(FP), DI MOVQ flags+8(FP), SI MOVQ lwpid+16(FP), DX MOVL $SYS__lwp_create, AX SYSCALL JCC 2(PC) NEGQ AX MOVL AX, ret+24(FP) RET TEXT runtime·lwp_tramp(SB),NOSPLIT,$0 // Set FS to point at m->tls. LEAQ m_tls(R8), DI CALL runtime·settls(SB) // Set up new stack. get_tls(CX) MOVQ R8, g_m(R9) MOVQ R9, g(CX) CALL runtime·stackcheck(SB) // Call fn. This is an ABI0 PC. CALL R12 // It shouldn't return. If it does, exit. MOVL $SYS__lwp_exit, AX SYSCALL JMP -3(PC) // keep exiting TEXT ·netbsdMstart(SB),NOSPLIT|TOPFRAME,$0 CALL ·netbsdMstart0(SB) RET // not reached TEXT runtime·osyield(SB),NOSPLIT,$0 MOVL $SYS_sched_yield, AX SYSCALL RET TEXT runtime·lwp_park(SB),NOSPLIT,$0 MOVL clockid+0(FP), DI // arg 1 - clockid MOVL flags+4(FP), SI // arg 2 - flags MOVQ ts+8(FP), DX // arg 3 - ts MOVL unpark+16(FP), R10 // arg 4 - unpark MOVQ hint+24(FP), R8 // arg 5 - hint MOVQ unparkhint+32(FP), R9 // arg 6 - unparkhint MOVL $SYS____lwp_park60, AX SYSCALL MOVL AX, ret+40(FP) RET TEXT runtime·lwp_unpark(SB),NOSPLIT,$0 MOVL lwp+0(FP), DI // arg 1 - lwp MOVQ hint+8(FP), SI // arg 2 - hint MOVL $SYS__lwp_unpark, AX SYSCALL MOVL AX, ret+16(FP) RET TEXT runtime·lwp_self(SB),NOSPLIT,$0 MOVL $SYS__lwp_self, AX SYSCALL MOVL AX, ret+0(FP) RET // Exit the entire program (like C exit) TEXT runtime·exit(SB),NOSPLIT,$-8 MOVL code+0(FP), DI // arg 1 - exit status MOVL $SYS_exit, 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 $SYS__lwp_exit, AX 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 $SYS_open, 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 $SYS_close, 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 $SYS_read, AX SYSCALL JCC 2(PC) NEGQ 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 LEAQ r+8(FP), DI MOVL flags+0(FP), SI MOVL $453, AX SYSCALL MOVL AX, errno+16(FP) RET TEXT runtime·write1(SB),NOSPLIT,$-8 MOVQ fd+0(FP), DI // arg 1 - fd MOVQ p+8(FP), SI // arg 2 - buf MOVL n+16(FP), DX // arg 3 - nbyte MOVL $SYS_write, AX SYSCALL JCC 2(PC) NEGQ AX // caller expects negative errno MOVL AX, ret+24(FP) 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 $SYS___nanosleep50, AX SYSCALL RET TEXT runtime·lwp_kill(SB),NOSPLIT,$0-16 MOVL tid+0(FP), DI // arg 1 - target MOVQ sig+8(FP), SI // arg 2 - signo MOVL $SYS__lwp_kill, AX SYSCALL RET TEXT runtime·raiseproc(SB),NOSPLIT,$16 MOVL $SYS_getpid, AX SYSCALL MOVQ AX, DI // arg 1 - pid MOVL sig+0(FP), SI // arg 2 - signo MOVL $SYS_kill, AX SYSCALL RET TEXT runtime·setitimer(SB),NOSPLIT,$-8 MOVL mode+0(FP), DI // arg 1 - which MOVQ new+8(FP), SI // arg 2 - itv MOVQ old+16(FP), DX // arg 3 - oitv MOVL $SYS___setitimer50, AX SYSCALL RET // func walltime() (sec int64, nsec int32) TEXT runtime·walltime(SB), NOSPLIT, $32 MOVQ $CLOCK_REALTIME, DI // arg 1 - clock_id LEAQ 8(SP), SI // arg 2 - tp MOVL $SYS___clock_gettime50, AX 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 MOVQ $CLOCK_MONOTONIC, DI // arg 1 - clock_id LEAQ 8(SP), SI // arg 2 - tp MOVL $SYS___clock_gettime50, AX SYSCALL MOVQ 8(SP), AX // sec MOVQ 16(SP), DX // nsec // sec is in AX, nsec in DX // return nsec in AX IMULQ $1000000000, AX ADDQ DX, AX MOVQ AX, ret+0(FP) RET TEXT runtime·getcontext(SB),NOSPLIT,$-8 MOVQ ctxt+0(FP), DI // arg 1 - context MOVL $SYS_getcontext, AX SYSCALL JCC 2(PC) MOVL $0xf1, 0xf1 // crash 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 $SYS___sigprocmask14, AX SYSCALL JCC 2(PC) MOVL $0xf1, 0xf1 // crash RET TEXT sigreturn_tramp<>(SB),NOSPLIT,$-8 MOVQ R15, DI // Load address of ucontext MOVQ $SYS_setcontext, AX SYSCALL MOVQ $-1, DI // Something failed... MOVL $SYS_exit, AX SYSCALL TEXT runtime·sigaction(SB),NOSPLIT,$-8 MOVL sig+0(FP), DI // arg 1 - signum MOVQ new+8(FP), SI // arg 2 - nsa MOVQ old+16(FP), DX // arg 3 - osa // arg 4 - tramp LEAQ sigreturn_tramp<>(SB), R10 MOVQ $2, R8 // arg 5 - vers MOVL $SYS___sigaction_sigtramp, 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 $SYS_mmap, 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 $SYS_munmap, AX SYSCALL JCC 2(PC) MOVL $0xf1, 0xf1 // crash RET TEXT runtime·madvise(SB),NOSPLIT,$0 MOVQ addr+0(FP), DI // arg 1 - addr MOVQ n+8(FP), SI // arg 2 - len MOVL flags+16(FP), DX // arg 3 - behav MOVQ $SYS_madvise, AX SYSCALL JCC 2(PC) MOVL $-1, AX MOVL AX, ret+24(FP) RET TEXT runtime·sigaltstack(SB),NOSPLIT,$-8 MOVQ new+0(FP), DI // arg 1 - nss MOVQ old+8(FP), SI // arg 2 - oss MOVQ $SYS___sigaltstack14, AX SYSCALL JCC 2(PC) MOVL $0xf1, 0xf1 // crash RET // set tls base to DI TEXT runtime·settls(SB),NOSPLIT,$8 // adjust for ELF: wants to use -8(FS) for g ADDQ $8, DI // arg 1 - ptr MOVQ $SYS__lwp_setprivate, AX 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 $SYS___sysctl, AX SYSCALL JCC 4(PC) NEGQ AX MOVL AX, ret+48(FP) RET MOVL $0, AX MOVL AX, ret+48(FP) RET // int32 runtime·kqueue(void) TEXT runtime·kqueue(SB),NOSPLIT,$0 MOVQ $0, DI MOVL $SYS_kqueue, 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 $SYS___kevent50, AX SYSCALL JCC 2(PC) NEGQ AX MOVL AX, ret+48(FP) RET // func fcntl(fd, cmd, arg int32) (int32, 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 $SYS_fcntl, AX 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 $SYS_issetugid, AX SYSCALL MOVL AX, ret+0(FP) RET
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