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| // 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"
|
| 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 *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)
| MOVL $-1, AX
| MOVL AX, ret+24(FP)
| RET
|
| TEXT runtime·write(SB),NOSPLIT,$-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)
| MOVL $-1, AX
| MOVL AX, ret+24(FP)
| RET
|
| TEXT runtime·raise(SB),NOSPLIT,$16
| MOVL $496, AX // lwp_gettid
| SYSCALL
| MOVQ $-1, DI // arg 1 - pid
| MOVQ AX, SI // arg 2 - tid
| MOVL sig+0(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·nanotime(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
| PUSHQ BP
| MOVQ SP, BP
| ANDQ $~15, SP // alignment for x86_64 ABI
| CALL AX
| MOVQ BP, SP
| POPQ BP
| RET
|
| TEXT runtime·sigtramp(SB),NOSPLIT,$72
| // Save callee-saved C registers, since the caller may be a C signal handler.
| MOVQ BX, bx-8(SP)
| MOVQ BP, bp-16(SP) // save in case GOEXPERIMENT=noframepointer is set
| MOVQ R12, r12-24(SP)
| MOVQ R13, r13-32(SP)
| MOVQ R14, r14-40(SP)
| MOVQ R15, r15-48(SP)
| // We don't save mxcsr or the x87 control word because sigtrampgo doesn't
| // modify them.
|
| MOVQ DX, ctx-56(SP)
| MOVQ SI, info-64(SP)
| MOVQ DI, signum-72(SP)
| CALL runtime·sigtrampgo(SB)
|
| MOVQ r15-48(SP), R15
| MOVQ r14-40(SP), R14
| MOVQ r13-32(SP), R13
| MOVQ r12-24(SP), R12
| MOVQ bp-16(SP), BP
| MOVQ bx-8(SP), BX
| 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
|
| // void runtime·closeonexec(int32 fd);
| TEXT runtime·closeonexec(SB),NOSPLIT,$0
| MOVL fd+0(FP), DI // fd
| MOVQ $2, SI // F_SETFD
| MOVQ $1, DX // FD_CLOEXEC
| MOVL $92, AX // fcntl
| SYSCALL
| RET
|
|
