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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 "zasm_GOOS_GOARCH.h"
TEXT runtime·sys_umtx_op(SB),7,$0
MOVQ 8(SP), DI
MOVL 16(SP), SI
MOVL 20(SP), DX
MOVQ 24(SP), R10
MOVQ 32(SP), R8
MOVL $454, AX
SYSCALL
RET
TEXT runtime·thr_new(SB),7,$0
MOVQ 8(SP), DI
MOVQ 16(SP), SI
MOVL $455, AX
SYSCALL
RET
TEXT runtime·thr_start(SB),7,$0
MOVQ DI, R13 // m
// set up FS to point at m->tls
LEAQ m_tls(R13), DI
CALL runtime·settls(SB) // smashes DI
// set up m, g
get_tls(CX)
MOVQ R13, m(CX)
MOVQ m_g0(R13), DI
MOVQ DI, g(CX)
CALL runtime·stackcheck(SB)
CALL runtime·mstart(SB)
MOVQ 0, AX // crash (not reached)
// Exit the entire program (like C exit)
TEXT runtime·exit(SB),7,$-8
MOVL 8(SP), DI // arg 1 exit status
MOVL $1, AX
SYSCALL
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·exit1(SB),7,$-8
MOVQ 8(SP), DI // arg 1 exit status
MOVL $431, AX
SYSCALL
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·write(SB),7,$-8
MOVL 8(SP), DI // arg 1 fd
MOVQ 16(SP), SI // arg 2 buf
MOVL 24(SP), DX // arg 3 count
MOVL $4, AX
SYSCALL
RET
TEXT runtime·getrlimit(SB),7,$-8
MOVL 8(SP), DI
MOVQ 16(SP), SI
MOVL $194, AX
SYSCALL
RET
TEXT runtime·raisesigpipe(SB),7,$16
// thr_self(&8(SP))
LEAQ 8(SP), DI // arg 1 &8(SP)
MOVL $432, AX
SYSCALL
// thr_kill(self, SIGPIPE)
MOVQ 8(SP), DI // arg 1 id
MOVQ $13, SI // arg 2 SIGPIPE
MOVL $433, AX
SYSCALL
RET
TEXT runtime·setitimer(SB), 7, $-8
MOVL 8(SP), DI
MOVQ 16(SP), SI
MOVQ 24(SP), DX
MOVL $83, AX
SYSCALL
RET
// func now() (sec int64, nsec int32)
TEXT time·now(SB), 7, $32
MOVL $232, AX
MOVQ $0, DI
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), 7, $32
MOVL $232, AX
MOVQ $0, DI
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 $1000000000, AX
ADDQ DX, AX
RET
TEXT runtime·sigaction(SB),7,$-8
MOVL 8(SP), DI // arg 1 sig
MOVQ 16(SP), SI // arg 2 act
MOVQ 24(SP), DX // arg 3 oact
MOVL $416, AX
SYSCALL
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·sigtramp(SB),7,$64
get_tls(BX)
// check that m exists
MOVQ m(BX), BP
CMPQ BP, $0
JNE 4(PC)
MOVQ DI, 0(SP)
CALL runtime·badsignal(SB)
RET
// save g
MOVQ g(BX), R10
MOVQ R10, 40(SP)
// g = m->signal
MOVQ m_gsignal(BP), BP
MOVQ BP, g(BX)
MOVQ DI, 0(SP)
MOVQ SI, 8(SP)
MOVQ DX, 16(SP)
MOVQ R10, 24(SP)
CALL runtime·sighandler(SB)
// restore g
get_tls(BX)
MOVQ 40(SP), R10
MOVQ R10, g(BX)
RET
TEXT runtime·mmap(SB),7,$0
MOVQ 8(SP), DI // arg 1 addr
MOVQ 16(SP), SI // arg 2 len
MOVL 24(SP), DX // arg 3 prot
MOVL 28(SP), R10 // arg 4 flags
MOVL 32(SP), R8 // arg 5 fid
MOVL 36(SP), R9 // arg 6 offset
MOVL $477, AX
SYSCALL
RET
TEXT runtime·munmap(SB),7,$0
MOVQ 8(SP), DI // arg 1 addr
MOVQ 16(SP), SI // arg 2 len
MOVL $73, AX
SYSCALL
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·madvise(SB),7,$0
MOVQ 8(SP), DI
MOVQ 16(SP), SI
MOVQ 24(SP), DX
MOVQ $75, AX // madvise
SYSCALL
// ignore failure - maybe pages are locked
RET
TEXT runtime·sigaltstack(SB),7,$-8
MOVQ new+8(SP), DI
MOVQ old+16(SP), SI
MOVQ $53, AX
SYSCALL
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·usleep(SB),7,$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),7,$8
ADDQ $16, DI // adjust for ELF: wants to use -16(FS) and -8(FS) for g and m
MOVQ DI, 0(SP)
MOVQ SP, SI
MOVQ $129, DI // AMD64_SET_FSBASE
MOVQ $165, AX // sysarch
SYSCALL
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·sysctl(SB),7,$0
MOVQ 8(SP), DI // arg 1 - name
MOVL 16(SP), SI // arg 2 - namelen
MOVQ 24(SP), DX // arg 3 - oldp
MOVQ 32(SP), R10 // arg 4 - oldlenp
MOVQ 40(SP), R8 // arg 5 - newp
MOVQ 48(SP), R9 // arg 6 - newlen
MOVQ $202, AX // sys___sysctl
SYSCALL
JCC 3(PC)
NEGL AX
RET
MOVL $0, AX
RET
TEXT runtime·osyield(SB),7,$-4
MOVL $331, AX // sys_sched_yield
SYSCALL
RET
TEXT runtime·sigprocmask(SB),7,$0
MOVL $3, DI // arg 1 - how (SIG_SETMASK)
MOVQ 8(SP), SI // arg 2 - set
MOVQ 16(SP), DX // arg 3 - oset
MOVL $340, AX // sys_sigprocmask
SYSCALL
JAE 2(PC)
MOVL $0xf1, 0xf1 // crash
RET
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