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go/src/runtime/sys_darwin_arm.s

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runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
// Copyright 2014 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, Darwin
// See http://fxr.watson.org/fxr/source/bsd/kern/syscalls.c?v=xnu-1228
// or /usr/include/sys/syscall.h (on a Mac) for system call numbers.
#include "go_asm.h"
#include "go_tls.h"
#include "textflag.h"
// Copied from /usr/include/sys/syscall.h
#define SYS_gettimeofday 116
#define SYS_kill 37
#define SYS_getpid 20
runtime: use pthread_sigmask, not sigprocmask, on Darwin ARM/ARM64 Other systems use pthread_sigmask. It was a mistake to use sigprocmask here. Change-Id: Ie045aa3f09cf035fcf807b7543b96fa5b847958a Reviewed-on: https://go-review.googlesource.com/16720 Reviewed-by: Dave Cheney <dave@cheney.net> Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-11-06 12:17:20 -07:00
#define SYS_pthread_sigmask 329
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
#define SYS_setitimer 83
#define SYS___sysctl 202
#define SYS_sigaction 46
#define SYS_sigreturn 184
#define SYS_kqueue 362
#define SYS_kevent 363
#define SYS_fcntl 92
TEXT notok<>(SB),NOSPLIT,$0
MOVW $0, R8
MOVW R8, (R8)
B 0(PC)
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
TEXT runtime·open_trampoline(SB),NOSPLIT,$0
MOVW 4(R0), R1 // arg 2 mode
MOVW 8(R0), R2 // arg 3 perm
MOVW 0(R0), R0 // arg 1 name
BL libc_open(SB)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
TEXT runtime·close_trampoline(SB),NOSPLIT,$0
MOVW 0(R0), R0 // arg 1 fd
BL libc_close(SB)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
TEXT runtime·write_trampoline(SB),NOSPLIT,$0
MOVW 4(R0), R1 // arg 2 buf
MOVW 8(R0), R2 // arg 3 count
MOVW 0(R0), R0 // arg 1 fd
BL libc_write(SB)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
TEXT runtime·read_trampoline(SB),NOSPLIT,$0
MOVW 4(R0), R1 // arg 2 buf
MOVW 8(R0), R2 // arg 3 count
MOVW 0(R0), R0 // arg 1 fd
BL libc_read(SB)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
TEXT runtime·exit_trampoline(SB),NOSPLIT|NOFRAME,$0
MOVW 0(R0), R0 // arg 0 code
BL libc_exit(SB)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MOVW $1234, R0
MOVW $1002, R1
MOVW R0, (R1) // fail hard
runtime: log all thread stack traces during GODEBUG=crash on Unix This extends https://golang.org/cl/2811, which only applied to Darwin and GNU/Linux, to all Unix systems. Fixes #9591. Change-Id: Iec3fb438564ba2924b15b447c0480f87c0bfd009 Reviewed-on: https://go-review.googlesource.com/12661 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-07-24 17:16:39 -06:00
TEXT runtime·raiseproc(SB),NOSPLIT,$24
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MOVW $SYS_getpid, R12
SWI $0x80
// arg 1 pid already in R0 from getpid
all: fix assembly vet issues Add missing function prototypes. Fix function prototypes. Use FP references instead of SP references. Fix variable names. Update comments. Clean up whitespace. (Not for vet.) All fairly minor fixes to make vet happy. Updates #11041 Change-Id: Ifab2cdf235ff61cdc226ab1d84b8467b5ac9446c Reviewed-on: https://go-review.googlesource.com/27713 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-07-11 17:05:57 -06:00
MOVW sig+0(FP), R1 // arg 2 - signal
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MOVW $1, R2 // arg 3 - posix
MOVW $SYS_kill, R12
SWI $0x80
RET
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
TEXT runtime·mmap_trampoline(SB),NOSPLIT,$0
MOVW R0, R8
MOVW 0(R8), R0 // arg 1 addr
MOVW 4(R8), R1 // arg 2 len
MOVW 8(R8), R2 // arg 3 prot
MOVW 12(R8), R3 // arg 4 flags
MOVW 16(R8), R4 // arg 5 fid
MOVW 20(R8), R5 // arg 6 offset
MOVW $0, R6 // off_t is uint64_t
// Only R0-R3 are used for arguments, the rest
// go on the stack.
MOVM.DB.W [R4-R6], (R13)
BL libc_mmap(SB)
ADD $12, R13
runtime: separate error result for mmap Currently mmap returns an unsafe.Pointer that encodes OS errors as values less than 4096. In practice this is okay, but it borders on being really unsafe: for example, the value has to be checked immediately after return and if stack copying were ever to observe such a value, it would panic. It's also not remotely idiomatic. Fix this by making mmap return a separate pointer value and error, like a normal Go function. Updates #22218. Change-Id: Iefd965095ffc82cc91118872753a5d39d785c3a6 Reviewed-on: https://go-review.googlesource.com/71270 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-16 18:28:29 -06:00
MOVW $0, R1
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
MOVW $-1, R2
CMP R0, R2
BNE ok
BL libc_error(SB)
MOVW (R0), R1
MOVW $0, R0
runtime: separate error result for mmap Currently mmap returns an unsafe.Pointer that encodes OS errors as values less than 4096. In practice this is okay, but it borders on being really unsafe: for example, the value has to be checked immediately after return and if stack copying were ever to observe such a value, it would panic. It's also not remotely idiomatic. Fix this by making mmap return a separate pointer value and error, like a normal Go function. Updates #22218. Change-Id: Iefd965095ffc82cc91118872753a5d39d785c3a6 Reviewed-on: https://go-review.googlesource.com/71270 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-16 18:28:29 -06:00
ok:
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
MOVW R0, 24(R8) // ret 1 addr
MOVW R1, 28(R8) // ret 2 err
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
TEXT runtime·munmap_trampoline(SB),NOSPLIT,$0
MOVW 4(R0), R1 // arg 2 len
MOVW 0(R0), R0 // arg 1 addr
BL libc_munmap(SB)
MOVW $-1, R2
CMP R0, R2
BL.EQ notok<>(SB)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
TEXT runtime·madvise_trampoline(SB),NOSPLIT,$0
MOVW 4(R0), R1 // arg 2 len
MOVW 8(R0), R2 // arg 3 advice
MOVW 0(R0), R0 // arg 1 addr
BL libc_madvise(SB)
MOVW $-1, R2
CMP R0, R2
BL.EQ notok<>(SB)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
TEXT runtime·setitimer(SB),NOSPLIT,$0
[dev.cc] runtime,syscall: quiet some more vet errors Fix many incorrect FP references and a few other details. Some errors remain, especially in vlop, but fixing them requires semantics. For another day. Change-Id: Ib769fb519b465e79fc08d004a51acc5644e8b259 Reviewed-on: https://go-review.googlesource.com/5288 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:44:06 -07:00
MOVW mode+0(FP), R0
MOVW new+4(FP), R1
MOVW old+8(FP), R2
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MOVW $SYS_setitimer, R12
SWI $0x80
RET
runtime: implement time.now using libc Change-Id: Ibdd9202d9711ea8aab2446c9950ddb8e1f6bf4e0 Reviewed-on: https://go-review.googlesource.com/114799 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2018-05-26 10:58:26 -06:00
TEXT runtime·walltime_trampoline(SB),NOSPLIT,$0
// R0 already has *timeval
MOVW $0, R1 // no timezone needed
BL libc_gettimeofday(SB)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
GLOBL timebase<>(SB),NOPTR,$(machTimebaseInfo__size)
TEXT runtime·nanotime_trampoline(SB),NOSPLIT,$0
MOVW R0, R8
BL libc_mach_absolute_time(SB)
MOVW R0, 0(R8)
MOVW R1, 4(R8)
MOVW timebase<>+machTimebaseInfo_numer(SB), R6
MOVW $timebase<>+machTimebaseInfo_denom(SB), R5
MOVW (R5), R7
DMB MB_ISH // memory barrier for atomic read
CMP $0, R7
BNE initialized
SUB $(machTimebaseInfo__size+7)/8*8, R13
MOVW R13, R0
BL libc_mach_timebase_info(SB)
MOVW machTimebaseInfo_numer(R13), R6
MOVW machTimebaseInfo_denom(R13), R7
ADD $(machTimebaseInfo__size+7)/8*8, R13
MOVW R6, timebase<>+machTimebaseInfo_numer(SB)
MOVW $timebase<>+machTimebaseInfo_denom(SB), R5
DMB MB_ISH // memory barrier for atomic write
MOVW R7, (R5)
DMB MB_ISH
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
initialized:
MOVW R6, 8(R8)
MOVW R7, 12(R8)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
runtime: adjust gsignal stack to current signal stack If non-Go code calls sigaltstack before a signal is received, use sigaltstack to determine the current signal stack and set the gsignal stack to use it. This makes the Go runtime more robust in the face of non-Go code. We still can't handle a disabled signal stack or a signal triggered with SA_ONSTACK clear, but we now give clear errors for those cases. Fixes #7227. Update #9896. Change-Id: Icb1607e01fd6461019b6d77d940e59b3aed4d258 Reviewed-on: https://go-review.googlesource.com/18102 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
2015-12-21 23:27:01 -07:00
TEXT runtime·sigfwd(SB),NOSPLIT,$0-16
MOVW sig+4(FP), R0
MOVW info+8(FP), R1
MOVW ctx+12(FP), R2
MOVW fn+0(FP), R11
MOVW R13, R4
SUB $24, R13
BIC $0x7, R13 // alignment for ELF ABI
BL (R11)
MOVW R4, R13
RET
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
// Sigtramp's job is to call the actual signal handler.
// It is called with the following arguments on the stack:
// LR "return address" - ignored
// R0 actual handler
// R1 siginfo style - ignored
// R2 signal number
// R3 siginfo
// -4(FP) context, beware that 0(FP) is the saved LR
TEXT runtime·sigtramp(SB),NOSPLIT,$0
// this might be called in external code context,
// where g is not set.
// first save R0, because runtime·load_g will clobber it
MOVM.DB.W [R0], (R13)
MOVB runtime·iscgo(SB), R0
CMP $0, R0
BL.NE runtime·load_g(SB)
CMP $0, g
BNE cont
// fake function call stack frame for badsignal
// we only need to pass R2 (signal number), but
// badsignal will expect R2 at 4(R13), so we also
// push R1 onto stack. turns out we do need R1
// to do sigreturn.
MOVM.DB.W [R1,R2], (R13)
MOVW $runtime·badsignal(SB), R11
BL (R11)
MOVM.IA.W [R1], (R13) // saved infostype
ADD $(4+4), R13 // +4: also need to remove the pushed R0.
[dev.cc] runtime,syscall: add symbols for FP and SP references in darwin-arm Maybe fix build. Change-Id: I99ea76f0e6e472f0e88405bf5d77f72d4b097abd Reviewed-on: https://go-review.googlesource.com/5287 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:09:01 -07:00
MOVW ucontext-4(FP), R0 // load ucontext
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
B ret
cont:
// Restore R0
MOVM.IA.W (R13), [R0]
// NOTE: some Darwin/ARM kernels always use the main stack to run the
// signal handler. We need to switch to gsignal ourselves.
MOVW g_m(g), R11
MOVW m_gsignal(R11), R5
MOVW (g_stack+stack_hi)(R5), R6
SUB $28, R6
// copy arguments for call to sighandler
MOVW R2, 4(R6) // signal num
MOVW R3, 8(R6) // signal info
MOVW g, 16(R6) // old_g
[dev.cc] runtime,syscall: add symbols for FP and SP references in darwin-arm Maybe fix build. Change-Id: I99ea76f0e6e472f0e88405bf5d77f72d4b097abd Reviewed-on: https://go-review.googlesource.com/5287 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:09:01 -07:00
MOVW context-4(FP), R4
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MOVW R4, 12(R6) // context
// Backup ucontext and infostyle
MOVW R4, 20(R6)
MOVW R1, 24(R6)
// switch stack and g
all: use cannot instead of can not You can not use cannot, but you cannot spell cannot can not. Change-Id: I2f0971481a460804de96fd8c9e46a9cc62a3fc5b Reviewed-on: https://go-review.googlesource.com/19772 Reviewed-by: Rob Pike <r@golang.org>
2016-01-27 13:49:13 -07:00
MOVW R6, R13 // sigtramp is not re-entrant, so no need to back up R13.
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MOVW R5, g
BL (R0)
// call sigreturn
MOVW 20(R13), R0 // saved ucontext
MOVW 24(R13), R1 // saved infostyle
ret:
MOVW $SYS_sigreturn, R12 // sigreturn(ucontext, infostyle)
SWI $0x80
// if sigreturn fails, we can do nothing but exit
B runtime·exit(SB)
TEXT runtime·sigprocmask(SB),NOSPLIT,$0
all: fix assembly vet issues Add missing function prototypes. Fix function prototypes. Use FP references instead of SP references. Fix variable names. Update comments. Clean up whitespace. (Not for vet.) All fairly minor fixes to make vet happy. Updates #11041 Change-Id: Ifab2cdf235ff61cdc226ab1d84b8467b5ac9446c Reviewed-on: https://go-review.googlesource.com/27713 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-07-11 17:05:57 -06:00
MOVW how+0(FP), R0
[dev.cc] runtime,syscall: quiet some more vet errors Fix many incorrect FP references and a few other details. Some errors remain, especially in vlop, but fixing them requires semantics. For another day. Change-Id: Ib769fb519b465e79fc08d004a51acc5644e8b259 Reviewed-on: https://go-review.googlesource.com/5288 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:44:06 -07:00
MOVW new+4(FP), R1
MOVW old+8(FP), R2
runtime: use pthread_sigmask, not sigprocmask, on Darwin ARM/ARM64 Other systems use pthread_sigmask. It was a mistake to use sigprocmask here. Change-Id: Ie045aa3f09cf035fcf807b7543b96fa5b847958a Reviewed-on: https://go-review.googlesource.com/16720 Reviewed-by: Dave Cheney <dave@cheney.net> Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-11-06 12:17:20 -07:00
MOVW $SYS_pthread_sigmask, R12
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
SWI $0x80
BL.CS notok<>(SB)
RET
TEXT runtime·sigaction(SB),NOSPLIT,$0
[dev.cc] runtime,syscall: quiet some more vet errors Fix many incorrect FP references and a few other details. Some errors remain, especially in vlop, but fixing them requires semantics. For another day. Change-Id: Ib769fb519b465e79fc08d004a51acc5644e8b259 Reviewed-on: https://go-review.googlesource.com/5288 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:44:06 -07:00
MOVW mode+0(FP), R0
MOVW new+4(FP), R1
MOVW old+8(FP), R2
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MOVW $SYS_sigaction, R12
SWI $0x80
RET
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
TEXT runtime·usleep_trampoline(SB),NOSPLIT,$0
MOVW 0(R0), R0 // arg 1 usec
BL libc_usleep(SB)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
runtime, sync/atomic: use NOFRAME on arm This replaces frame size -4 with the NOFRAME flag in arm assembly. This was automated with: sed -i -e 's/\(^TEXT.*[A-Z]\),\( *\)\$-4/\1|NOFRAME,\2$0/' $(find -name '*_arm.s') Plus three manual comment changes found by: grep '\$-4' $(find -name '*_arm.s') The go binary is identical before and after this change. Change-Id: I0310384d1a584118c41d1cd3a042bb8ea7227ef9 Reviewed-on: https://go-review.googlesource.com/92042 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
2018-01-25 10:15:23 -07:00
TEXT ·publicationBarrier(SB),NOSPLIT|NOFRAME,$0-0
runtime: ensure GC sees type-safe memory on weak machines Currently its possible for the garbage collector to observe uninitialized memory or stale heap bitmap bits on weakly ordered architectures such as ARM and PPC. On such architectures, the stores that zero newly allocated memory and initialize its heap bitmap may move after a store in user code that makes the allocated object observable by the garbage collector. To fix this, add a "publication barrier" (also known as an "export barrier") before returning from mallocgc. This is a store/store barrier that ensures any write done by user code that makes the returned object observable to the garbage collector will be ordered after the initialization performed by mallocgc. No barrier is necessary on the reading side because of the data dependency between loading the pointer and loading the contents of the object. Fixes one of the issues raised in #9984. Change-Id: Ia3d96ad9c5fc7f4d342f5e05ec0ceae700cd17c8 Reviewed-on: https://go-review.googlesource.com/11083 Reviewed-by: Rick Hudson <rlh@golang.org> Reviewed-by: Dmitry Vyukov <dvyukov@google.com> Reviewed-by: Minux Ma <minux@golang.org> Reviewed-by: Martin Capitanio <capnm9@gmail.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-06-15 10:30:23 -06:00
B runtime·armPublicationBarrier(SB)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
TEXT runtime·sysctl(SB),NOSPLIT,$0
[dev.cc] runtime,syscall: quiet some more vet errors Fix many incorrect FP references and a few other details. Some errors remain, especially in vlop, but fixing them requires semantics. For another day. Change-Id: Ib769fb519b465e79fc08d004a51acc5644e8b259 Reviewed-on: https://go-review.googlesource.com/5288 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:44:06 -07:00
MOVW mib+0(FP), R0
MOVW miblen+4(FP), R1
MOVW out+8(FP), R2
MOVW size+12(FP), R3
MOVW dst+16(FP), R4
MOVW ndst+20(FP), R5
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MOVW $SYS___sysctl, R12 // syscall entry
SWI $0x80
BCC sysctl_ret
RSB $0, R0, R0
MOVW R0, ret+24(FP)
RET
sysctl_ret:
MOVW $0, R0
MOVW R0, ret+24(FP)
RET
// uint32 mach_msg_trap(void*, uint32, uint32, uint32, uint32, uint32, uint32)
TEXT runtime·mach_msg_trap(SB),NOSPLIT,$0
[dev.cc] runtime,syscall: quiet some more vet errors Fix many incorrect FP references and a few other details. Some errors remain, especially in vlop, but fixing them requires semantics. For another day. Change-Id: Ib769fb519b465e79fc08d004a51acc5644e8b259 Reviewed-on: https://go-review.googlesource.com/5288 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:44:06 -07:00
MOVW h+0(FP), R0
MOVW op+4(FP), R1
MOVW send_size+8(FP), R2
MOVW rcv_size+12(FP), R3
MOVW rcv_name+16(FP), R4
MOVW timeout+20(FP), R5
MOVW notify+24(FP), R6
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MVN $30, R12
SWI $0x80
[dev.cc] runtime,syscall: quiet some more vet errors Fix many incorrect FP references and a few other details. Some errors remain, especially in vlop, but fixing them requires semantics. For another day. Change-Id: Ib769fb519b465e79fc08d004a51acc5644e8b259 Reviewed-on: https://go-review.googlesource.com/5288 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:44:06 -07:00
MOVW R0, ret+28(FP)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
TEXT runtime·mach_task_self(SB),NOSPLIT,$0
MVN $27, R12 // task_self_trap
SWI $0x80
[dev.cc] runtime,syscall: add symbols for FP and SP references in darwin-arm Maybe fix build. Change-Id: I99ea76f0e6e472f0e88405bf5d77f72d4b097abd Reviewed-on: https://go-review.googlesource.com/5287 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:09:01 -07:00
MOVW R0, ret+0(FP)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
TEXT runtime·mach_thread_self(SB),NOSPLIT,$0
MVN $26, R12 // thread_self_trap
SWI $0x80
[dev.cc] runtime,syscall: add symbols for FP and SP references in darwin-arm Maybe fix build. Change-Id: I99ea76f0e6e472f0e88405bf5d77f72d4b097abd Reviewed-on: https://go-review.googlesource.com/5287 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:09:01 -07:00
MOVW R0, ret+0(FP)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
TEXT runtime·mach_reply_port(SB),NOSPLIT,$0
MVN $25, R12 // mach_reply_port
SWI $0x80
[dev.cc] runtime,syscall: add symbols for FP and SP references in darwin-arm Maybe fix build. Change-Id: I99ea76f0e6e472f0e88405bf5d77f72d4b097abd Reviewed-on: https://go-review.googlesource.com/5287 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:09:01 -07:00
MOVW R0, ret+0(FP)
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
RET
// Mach provides trap versions of the semaphore ops,
// instead of requiring the use of RPC.
// uint32 mach_semaphore_wait(uint32)
TEXT runtime·mach_semaphore_wait(SB),NOSPLIT,$0
[dev.cc] runtime,syscall: quiet some more vet errors Fix many incorrect FP references and a few other details. Some errors remain, especially in vlop, but fixing them requires semantics. For another day. Change-Id: Ib769fb519b465e79fc08d004a51acc5644e8b259 Reviewed-on: https://go-review.googlesource.com/5288 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:44:06 -07:00
MOVW sema+0(FP), R0
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MVN $35, R12 // semaphore_wait_trap
SWI $0x80
MOVW R0, ret+4(FP)
RET
// uint32 mach_semaphore_timedwait(uint32, uint32, uint32)
TEXT runtime·mach_semaphore_timedwait(SB),NOSPLIT,$0
[dev.cc] runtime,syscall: quiet some more vet errors Fix many incorrect FP references and a few other details. Some errors remain, especially in vlop, but fixing them requires semantics. For another day. Change-Id: Ib769fb519b465e79fc08d004a51acc5644e8b259 Reviewed-on: https://go-review.googlesource.com/5288 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:44:06 -07:00
MOVW sema+0(FP), R0
MOVW sec+4(FP), R1
MOVW nsec+8(FP), R2
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MVN $37, R12 // semaphore_timedwait_trap
SWI $0x80
MOVW R0, ret+12(FP)
RET
// uint32 mach_semaphore_signal(uint32)
TEXT runtime·mach_semaphore_signal(SB),NOSPLIT,$0
[dev.cc] runtime,syscall: quiet some more vet errors Fix many incorrect FP references and a few other details. Some errors remain, especially in vlop, but fixing them requires semantics. For another day. Change-Id: Ib769fb519b465e79fc08d004a51acc5644e8b259 Reviewed-on: https://go-review.googlesource.com/5288 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:44:06 -07:00
MOVW sema+0(FP), R0
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MVN $32, R12 // semaphore_signal_trap
SWI $0x80
MOVW R0, ret+4(FP)
RET
// uint32 mach_semaphore_signal_all(uint32)
TEXT runtime·mach_semaphore_signal_all(SB),NOSPLIT,$0
[dev.cc] runtime,syscall: quiet some more vet errors Fix many incorrect FP references and a few other details. Some errors remain, especially in vlop, but fixing them requires semantics. For another day. Change-Id: Ib769fb519b465e79fc08d004a51acc5644e8b259 Reviewed-on: https://go-review.googlesource.com/5288 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:44:06 -07:00
MOVW sema+0(FP), R0
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MVN $33, R12 // semaphore_signal_all_trap
SWI $0x80
MOVW R0, ret+4(FP)
RET
// int32 runtime·kqueue(void)
TEXT runtime·kqueue(SB),NOSPLIT,$0
MOVW $SYS_kqueue, R12
SWI $0x80
RSB.CS $0, R0, R0
MOVW R0, ret+0(FP)
RET
// int32 runtime·kevent(int kq, Kevent *changelist, int nchanges, Kevent *eventlist, int events, Timespec *timeout)
TEXT runtime·kevent(SB),NOSPLIT,$0
MOVW $SYS_kevent, R12
MOVW kq+0(FP), R0
[dev.cc] runtime,syscall: quiet some more vet errors Fix many incorrect FP references and a few other details. Some errors remain, especially in vlop, but fixing them requires semantics. For another day. Change-Id: Ib769fb519b465e79fc08d004a51acc5644e8b259 Reviewed-on: https://go-review.googlesource.com/5288 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:44:06 -07:00
MOVW ch+4(FP), R1
MOVW nch+8(FP), R2
MOVW ev+12(FP), R3
MOVW nev+16(FP), R4
MOVW ts+20(FP), R5
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
SWI $0x80
RSB.CS $0, R0, R0
MOVW R0, ret+24(FP)
RET
// int32 runtime·closeonexec(int32 fd)
TEXT runtime·closeonexec(SB),NOSPLIT,$0
MOVW $SYS_fcntl, R12
[dev.cc] runtime,syscall: add symbols for FP and SP references in darwin-arm Maybe fix build. Change-Id: I99ea76f0e6e472f0e88405bf5d77f72d4b097abd Reviewed-on: https://go-review.googlesource.com/5287 Reviewed-by: Russ Cox <rsc@golang.org>
2015-02-19 14:09:01 -07:00
MOVW fd+0(FP), R0
runtime: darwin/arm support Change-Id: I63110daad2d62ae72ab1f33a40464d76e6205627 Reviewed-on: https://go-review.googlesource.com/2121 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2014-12-25 23:07:10 -07:00
MOVW $2, R1 // F_SETFD
MOVW $1, R2 // FD_CLOEXEC
SWI $0x80
RET
// sigaltstack on some darwin/arm version is buggy and will always
// run the signal handler on the main stack, so our sigtramp has
// to do the stack switch ourselves.
TEXT runtime·sigaltstack(SB),NOSPLIT,$0
RET
cmd/link,runtime: move syscalls to libc on iOS This CL is the darwin/arm and darwin/arm64 equivalent to CL 108679, 110215, 110437, 110438, 111258, 110655. Updates #17490 Change-Id: Ia95b27b38f9c3535012c566f17a44b4ed26b9db6 Reviewed-on: https://go-review.googlesource.com/111015 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-05-01 02:48:19 -06:00
// Thread related functions
// Note: On darwin/arm, the runtime always use runtime/cgo to
// create threads, so all thread related functions will just exit with a
// unique status.
TEXT runtime·mstart_stub(SB),NOSPLIT,$0
MOVW $44, R0
BL libc_exit(SB)
RET
TEXT runtime·pthread_attr_init_trampoline(SB),NOSPLIT,$0
MOVW $45, R0
BL libc_exit(SB)
RET
TEXT runtime·pthread_attr_setstacksize_trampoline(SB),NOSPLIT,$0
MOVW $46, R0
BL libc_exit(SB)
RET
TEXT runtime·pthread_attr_setdetachstate_trampoline(SB),NOSPLIT,$0
MOVW $47, R0
BL libc_exit(SB)
RET
TEXT runtime·pthread_create_trampoline(SB),NOSPLIT,$0
MOVW $48, R0
BL libc_exit(SB)
RET
TEXT runtime·raise_trampoline(SB),NOSPLIT,$0
MOVW 0(R0), R0 // arg 1 sig
BL libc_raise(SB)
RET
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