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authorRuss Cox <rsc@golang.org>2014-09-08 00:08:51 -0400
committerRuss Cox <rsc@golang.org>2014-09-08 00:08:51 -0400
commitc007ce824d9a4fccb148f9204e04c23ed2984b71 (patch)
tree7dcac257114ef5c446be5b7b68c27dea230b7c09 /src/runtime/sys_netbsd_arm.s
parent220a6de47eced55956eb8af8d643d4f5b67fd634 (diff)
downloadgo-c007ce824d9a4fccb148f9204e04c23ed2984b71.tar.gz
go-c007ce824d9a4fccb148f9204e04c23ed2984b71.zip
build: move package sources from src/pkg to src
Preparation was in CL 134570043. This CL contains only the effect of 'hg mv src/pkg/* src'. For more about the move, see golang.org/s/go14nopkg.
Diffstat (limited to 'src/runtime/sys_netbsd_arm.s')
-rw-r--r--src/runtime/sys_netbsd_arm.s351
1 files changed, 351 insertions, 0 deletions
diff --git a/src/runtime/sys_netbsd_arm.s b/src/runtime/sys_netbsd_arm.s
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+// Copyright 2013 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 ARM, NetBSD
+// /usr/src/sys/kern/syscalls.master for syscall numbers.
+//
+
+#include "zasm_GOOS_GOARCH.h"
+#include "textflag.h"
+
+// Exit the entire program (like C exit)
+TEXT runtime·exit(SB),NOSPLIT,$-4
+ MOVW 0(FP), R0 // arg 1 exit status
+ SWI $0xa00001
+ MOVW.CS $0, R8 // crash on syscall failure
+ MOVW.CS R8, (R8)
+ RET
+
+TEXT runtime·exit1(SB),NOSPLIT,$-4
+ SWI $0xa00136 // sys__lwp_exit
+ MOVW $1, R8 // crash
+ MOVW R8, (R8)
+ RET
+
+TEXT runtime·open(SB),NOSPLIT,$-8
+ MOVW 0(FP), R0
+ MOVW 4(FP), R1
+ MOVW 8(FP), R2
+ SWI $0xa00005
+ MOVW R0, ret+12(FP)
+ RET
+
+TEXT runtime·close(SB),NOSPLIT,$-8
+ MOVW 0(FP), R0
+ SWI $0xa00006
+ MOVW R0, ret+4(FP)
+ RET
+
+TEXT runtime·read(SB),NOSPLIT,$-8
+ MOVW 0(FP), R0
+ MOVW 4(FP), R1
+ MOVW 8(FP), R2
+ SWI $0xa00003
+ MOVW R0, ret+12(FP)
+ RET
+
+TEXT runtime·write(SB),NOSPLIT,$-4
+ MOVW 0(FP), R0 // arg 1 - fd
+ MOVW 4(FP), R1 // arg 2 - buf
+ MOVW 8(FP), R2 // arg 3 - nbyte
+ SWI $0xa00004 // sys_write
+ MOVW R0, ret+12(FP)
+ RET
+
+// int32 lwp_create(void *context, uintptr flags, void *lwpid)
+TEXT runtime·lwp_create(SB),NOSPLIT,$0
+ MOVW ctxt+0(FP), R0
+ MOVW flags+4(FP), R1
+ MOVW lwpid+8(FP), R2
+ SWI $0xa00135 // sys__lwp_create
+ MOVW R0, ret+12(FP)
+ RET
+
+TEXT runtime·osyield(SB),NOSPLIT,$0
+ SWI $0xa0015e // sys_sched_yield
+ RET
+
+TEXT runtime·lwp_park(SB),NOSPLIT,$0
+ MOVW 0(FP), R0 // arg 1 - abstime
+ MOVW 4(FP), R1 // arg 2 - unpark
+ MOVW 8(FP), R2 // arg 3 - hint
+ MOVW 12(FP), R3 // arg 4 - unparkhint
+ SWI $0xa001b2 // sys__lwp_park
+ MOVW R0, ret+16(FP)
+ RET
+
+TEXT runtime·lwp_unpark(SB),NOSPLIT,$0
+ MOVW 0(FP), R0 // arg 1 - lwp
+ MOVW 4(FP), R1 // arg 2 - hint
+ SWI $0xa00141 // sys__lwp_unpark
+ MOVW R0, ret+8(FP)
+ RET
+
+TEXT runtime·lwp_self(SB),NOSPLIT,$0
+ SWI $0xa00137 // sys__lwp_self
+ MOVW R0, ret+0(FP)
+ RET
+
+TEXT runtime·lwp_tramp(SB),NOSPLIT,$0
+ MOVW R0, g_m(R1)
+ MOVW R1, g
+
+ BL runtime·emptyfunc(SB) // fault if stack check is wrong
+ BL (R2)
+ MOVW $2, R8 // crash (not reached)
+ MOVW R8, (R8)
+ RET
+
+TEXT runtime·usleep(SB),NOSPLIT,$16
+ MOVW usec+0(FP), R0
+ MOVW R0, R2
+ MOVW $1000000, R1
+ DIV R1, R0
+ // 0(R13) is the saved LR, don't use it
+ MOVW R0, 4(R13) // tv_sec.low
+ MOVW $0, R0
+ MOVW R0, 8(R13) // tv_sec.high
+ MOD R1, R2
+ MOVW $1000, R1
+ MUL R1, R2
+ MOVW R2, 12(R13) // tv_nsec
+
+ MOVW $4(R13), R0 // arg 1 - rqtp
+ MOVW $0, R1 // arg 2 - rmtp
+ SWI $0xa001ae // sys_nanosleep
+ RET
+
+TEXT runtime·raise(SB),NOSPLIT,$16
+ SWI $0xa00137 // sys__lwp_self, the returned R0 is arg 1
+ MOVW sig+0(FP), R1 // arg 2 - signal
+ SWI $0xa0013e // sys__lwp_kill
+ RET
+
+TEXT runtime·setitimer(SB),NOSPLIT,$-4
+ MOVW 0(FP), R0 // arg 1 - which
+ MOVW 4(FP), R1 // arg 2 - itv
+ MOVW 8(FP), R2 // arg 3 - oitv
+ SWI $0xa001a9 // sys_setitimer
+ RET
+
+// func now() (sec int64, nsec int32)
+TEXT time·now(SB), NOSPLIT, $32
+ MOVW $0, R0 // CLOCK_REALTIME
+ MOVW $8(R13), R1
+ SWI $0xa001ab // clock_gettime
+
+ MOVW 8(R13), R0 // sec.low
+ MOVW 12(R13), R1 // sec.high
+ MOVW 16(R13), R2 // nsec
+
+ MOVW R0, 0(FP)
+ MOVW R1, 4(FP)
+ MOVW R2, 8(FP)
+ RET
+
+// int64 nanotime(void) so really
+// void nanotime(int64 *nsec)
+TEXT runtime·nanotime(SB), NOSPLIT, $32
+ MOVW $0, R0 // CLOCK_REALTIME
+ MOVW $8(R13), R1
+ SWI $0xa001ab // clock_gettime
+
+ MOVW 8(R13), R0 // sec.low
+ MOVW 12(R13), R4 // sec.high
+ MOVW 16(R13), R2 // nsec
+
+ MOVW $1000000000, R3
+ MULLU R0, R3, (R1, R0)
+ MUL R3, R4
+ ADD.S R2, R0
+ ADC R4, R1
+
+ MOVW R0, ret_lo+0(FP)
+ MOVW R1, ret_hi+4(FP)
+ RET
+
+TEXT runtime·getcontext(SB),NOSPLIT,$-4
+ MOVW 0(FP), R0 // arg 1 - context
+ SWI $0xa00133 // sys_getcontext
+ MOVW.CS $0, R8 // crash on syscall failure
+ MOVW.CS R8, (R8)
+ RET
+
+TEXT runtime·sigprocmask(SB),NOSPLIT,$0
+ MOVW 0(FP), R0 // arg 1 - how
+ MOVW 4(FP), R1 // arg 2 - set
+ MOVW 8(FP), R2 // arg 3 - oset
+ SWI $0xa00125 // sys_sigprocmask
+ MOVW.CS $0, R8 // crash on syscall failure
+ MOVW.CS R8, (R8)
+ RET
+
+TEXT runtime·sigreturn_tramp(SB),NOSPLIT,$-4
+ // on entry, SP points to siginfo, we add sizeof(ucontext)
+ // to SP to get a pointer to ucontext.
+ ADD $0x80, R13, R0 // 0x80 == sizeof(UcontextT)
+ SWI $0xa00134 // sys_setcontext
+ // something failed, we have to exit
+ MOVW $0x4242, R0 // magic return number
+ SWI $0xa00001 // sys_exit
+ B -2(PC) // continue exit
+
+TEXT runtime·sigaction(SB),NOSPLIT,$4
+ MOVW 0(FP), R0 // arg 1 - signum
+ MOVW 4(FP), R1 // arg 2 - nsa
+ MOVW 8(FP), R2 // arg 3 - osa
+ MOVW $runtime·sigreturn_tramp(SB), R3 // arg 4 - tramp
+ MOVW $2, R4 // arg 5 - vers
+ MOVW R4, 4(R13)
+ ADD $4, R13 // pass arg 5 on stack
+ SWI $0xa00154 // sys___sigaction_sigtramp
+ SUB $4, R13
+ MOVW.CS $3, R8 // crash on syscall failure
+ MOVW.CS R8, (R8)
+ RET
+
+TEXT runtime·sigtramp(SB),NOSPLIT,$24
+ // this might be called in external code context,
+ // where g is not set.
+ // first save R0, because runtime·load_g will clobber it
+ MOVW R0, 4(R13) // signum
+ MOVB runtime·iscgo(SB), R0
+ CMP $0, R0
+ BL.NE runtime·load_g(SB)
+
+ CMP $0, g
+ BNE 4(PC)
+ // signal number is already prepared in 4(R13)
+ MOVW $runtime·badsignal(SB), R11
+ BL (R11)
+ RET
+
+ // save g
+ MOVW g, R4
+ MOVW g, 20(R13)
+
+ // g = m->signal
+ MOVW g_m(g), R8
+ MOVW m_gsignal(R8), g
+
+ // R0 is already saved
+ MOVW R1, 8(R13) // info
+ MOVW R2, 12(R13) // context
+ MOVW R4, 16(R13) // gp
+
+ BL runtime·sighandler(SB)
+
+ // restore g
+ MOVW 20(R13), g
+ RET
+
+TEXT runtime·mmap(SB),NOSPLIT,$12
+ MOVW 0(FP), R0 // arg 1 - addr
+ MOVW 4(FP), R1 // arg 2 - len
+ MOVW 8(FP), R2 // arg 3 - prot
+ MOVW 12(FP), R3 // arg 4 - flags
+ // arg 5 (fid) and arg6 (offset_lo, offset_hi) are passed on stack
+ // note the C runtime only passes the 32-bit offset_lo to us
+ MOVW 16(FP), R4 // arg 5
+ MOVW R4, 4(R13)
+ MOVW 20(FP), R5 // arg 6 lower 32-bit
+ MOVW R5, 8(R13)
+ MOVW $0, R6 // higher 32-bit for arg 6
+ MOVW R6, 12(R13)
+ ADD $4, R13 // pass arg 5 and arg 6 on stack
+ SWI $0xa000c5 // sys_mmap
+ SUB $4, R13
+ MOVW R0, ret+24(FP)
+ RET
+
+TEXT runtime·munmap(SB),NOSPLIT,$0
+ MOVW 0(FP), R0 // arg 1 - addr
+ MOVW 4(FP), R1 // arg 2 - len
+ SWI $0xa00049 // sys_munmap
+ MOVW.CS $0, R8 // crash on syscall failure
+ MOVW.CS R8, (R8)
+ RET
+
+TEXT runtime·madvise(SB),NOSPLIT,$0
+ MOVW 0(FP), R0 // arg 1 - addr
+ MOVW 4(FP), R1 // arg 2 - len
+ MOVW 8(FP), R2 // arg 3 - behav
+ SWI $0xa0004b // sys_madvise
+ // ignore failure - maybe pages are locked
+ RET
+
+TEXT runtime·sigaltstack(SB),NOSPLIT,$-4
+ MOVW 0(FP), R0 // arg 1 - nss
+ MOVW 4(FP), R1 // arg 2 - oss
+ SWI $0xa00119 // sys___sigaltstack14
+ MOVW.CS $0, R8 // crash on syscall failure
+ MOVW.CS R8, (R8)
+ RET
+
+TEXT runtime·sysctl(SB),NOSPLIT,$8
+ MOVW 0(FP), R0 // arg 1 - name
+ MOVW 4(FP), R1 // arg 2 - namelen
+ MOVW 8(FP), R2 // arg 3 - oldp
+ MOVW 12(FP), R3 // arg 4 - oldlenp
+ MOVW 16(FP), R4 // arg 5 - newp
+ MOVW R4, 4(R13)
+ MOVW 20(FP), R4 // arg 6 - newlen
+ MOVW R4, 8(R13)
+ ADD $4, R13 // pass arg 5 and 6 on stack
+ SWI $0xa000ca // sys___sysctl
+ SUB $4, R13
+ MOVW R0, ret+24(FP)
+ RET
+
+// int32 runtime·kqueue(void)
+TEXT runtime·kqueue(SB),NOSPLIT,$0
+ SWI $0xa00158 // sys_kqueue
+ RSB.CS $0, R0
+ MOVW R0, ret+0(FP)
+ RET
+
+// int32 runtime·kevent(int kq, Kevent *changelist, int nchanges, Kevent *eventlist, int nevents, Timespec *timeout)
+TEXT runtime·kevent(SB),NOSPLIT,$8
+ MOVW 0(FP), R0 // kq
+ MOVW 4(FP), R1 // changelist
+ MOVW 8(FP), R2 // nchanges
+ MOVW 12(FP), R3 // eventlist
+ MOVW 16(FP), R4 // nevents
+ MOVW R4, 4(R13)
+ MOVW 20(FP), R4 // timeout
+ MOVW R4, 8(R13)
+ ADD $4, R13 // pass arg 5 and 6 on stack
+ SWI $0xa001b3 // sys___kevent50
+ RSB.CS $0, R0
+ SUB $4, R13
+ MOVW R0, ret+24(FP)
+ RET
+
+// void runtime·closeonexec(int32 fd)
+TEXT runtime·closeonexec(SB),NOSPLIT,$0
+ MOVW 0(FP), R0 // fd
+ MOVW $2, R1 // F_SETFD
+ MOVW $1, R2 // FD_CLOEXEC
+ SWI $0xa0005c // sys_fcntl
+ RET
+
+TEXT runtime·casp(SB),NOSPLIT,$0
+ B runtime·cas(SB)
+
+// TODO(minux): this is only valid for ARMv6+
+// bool armcas(int32 *val, int32 old, int32 new)
+// Atomically:
+// if(*val == old){
+// *val = new;
+// return 1;
+// }else
+// return 0;
+TEXT runtime·cas(SB),NOSPLIT,$0
+ B runtime·armcas(SB)
+
+TEXT runtime·read_tls_fallback(SB),NOSPLIT,$-4
+ MOVM.WP [R1, R2, R3, R12], (R13)
+ SWI $0x00a0013c // _lwp_getprivate
+ MOVM.IAW (R13), [R1, R2, R3, R12]
+ RET