зеркало из https://github.com/CryptoPro/go.git
runtime: switch openbsd/arm64 to pthreads
This switches openbsd/arm64 to thread creation via pthreads, rather than doing direct system calls. Update #36435 Change-Id: I7cf60fa954f92628e05f15d2732833a2fbdccdb9 Reviewed-on: https://go-review.googlesource.com/c/go/+/250182 Trust: Joel Sing <joel@sing.id.au> Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Joel Sing
Родитель
d95ca91380
Коммит
3d40895e36
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@ -31,6 +31,8 @@ const (
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_SA_RESTART = 0x2
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_SA_ONSTACK = 0x1
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_PTHREAD_CREATE_DETACHED = 0x1
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_SIGHUP = 0x1
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_SIGINT = 0x2
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_SIGQUIT = 0x3
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@ -157,3 +159,10 @@ type keventt struct {
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data int64
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udata *byte
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}
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type pthread uintptr
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type pthreadattr uintptr
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type pthreadcond uintptr
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type pthreadcondattr uintptr
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type pthreadmutex uintptr
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type pthreadmutexattr uintptr
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@ -2,7 +2,7 @@
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build openbsd,amd64
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// +build openbsd,amd64 openbsd,arm64
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package runtime
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@ -3,6 +3,7 @@
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// license that can be found in the LICENSE file.
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// +build openbsd,!amd64
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// +build openbsd,!arm64
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package runtime
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@ -1224,7 +1224,7 @@ func mStackIsSystemAllocated() bool {
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return true
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case "openbsd":
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switch GOARCH {
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case "amd64":
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case "amd64", "arm64":
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return true
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}
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}
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@ -2,7 +2,7 @@
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build darwin openbsd,amd64
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// +build darwin openbsd,amd64 openbsd,arm64
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package runtime
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@ -2,7 +2,7 @@
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build openbsd,amd64
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// +build openbsd,amd64 openbsd,arm64
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package runtime
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@ -3,7 +3,9 @@
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// license that can be found in the LICENSE file.
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//
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// System calls and other sys.stuff for arm64, OpenBSD
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// /usr/src/sys/kern/syscalls.master for syscall numbers.
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// System calls are implemented in libc/libpthread, this file
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// contains trampolines that convert from Go to C calling convention.
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// Some direct system call implementations currently remain.
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//
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#include "go_asm.h"
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@ -24,6 +26,180 @@
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NOOP; \
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NOOP
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// mstart_stub is the first function executed on a new thread started by pthread_create.
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// It just does some low-level setup and then calls mstart.
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// Note: called with the C calling convention.
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TEXT runtime·mstart_stub(SB),NOSPLIT,$160
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// R0 points to the m.
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// We are already on m's g0 stack.
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// Save callee-save registers.
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MOVD R19, 8(RSP)
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MOVD R20, 16(RSP)
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MOVD R21, 24(RSP)
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MOVD R22, 32(RSP)
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MOVD R23, 40(RSP)
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MOVD R24, 48(RSP)
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MOVD R25, 56(RSP)
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MOVD R26, 64(RSP)
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MOVD R27, 72(RSP)
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MOVD g, 80(RSP)
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MOVD R29, 88(RSP)
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FMOVD F8, 96(RSP)
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FMOVD F9, 104(RSP)
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FMOVD F10, 112(RSP)
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FMOVD F11, 120(RSP)
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FMOVD F12, 128(RSP)
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FMOVD F13, 136(RSP)
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FMOVD F14, 144(RSP)
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FMOVD F15, 152(RSP)
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MOVD m_g0(R0), g
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BL runtime·save_g(SB)
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BL runtime·mstart(SB)
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// Restore callee-save registers.
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MOVD 8(RSP), R19
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MOVD 16(RSP), R20
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MOVD 24(RSP), R21
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MOVD 32(RSP), R22
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MOVD 40(RSP), R23
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MOVD 48(RSP), R24
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MOVD 56(RSP), R25
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MOVD 64(RSP), R26
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MOVD 72(RSP), R27
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MOVD 80(RSP), g
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MOVD 88(RSP), R29
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FMOVD 96(RSP), F8
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FMOVD 104(RSP), F9
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FMOVD 112(RSP), F10
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FMOVD 120(RSP), F11
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FMOVD 128(RSP), F12
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FMOVD 136(RSP), F13
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FMOVD 144(RSP), F14
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FMOVD 152(RSP), F15
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// Go is all done with this OS thread.
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// Tell pthread everything is ok (we never join with this thread, so
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// the value here doesn't really matter).
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MOVD $0, R0
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RET
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TEXT runtime·sigfwd(SB),NOSPLIT,$0-32
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MOVW sig+8(FP), R0
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MOVD info+16(FP), R1
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MOVD ctx+24(FP), R2
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MOVD fn+0(FP), R11
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BL (R11) // Alignment for ELF ABI?
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RET
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TEXT runtime·sigtramp(SB),NOSPLIT,$192
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// Save callee-save registers in the case of signal forwarding.
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// Please refer to https://golang.org/issue/31827 .
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MOVD R19, 8*4(RSP)
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MOVD R20, 8*5(RSP)
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MOVD R21, 8*6(RSP)
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MOVD R22, 8*7(RSP)
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MOVD R23, 8*8(RSP)
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MOVD R24, 8*9(RSP)
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MOVD R25, 8*10(RSP)
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MOVD R26, 8*11(RSP)
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MOVD R27, 8*12(RSP)
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MOVD g, 8*13(RSP)
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MOVD R29, 8*14(RSP)
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FMOVD F8, 8*15(RSP)
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FMOVD F9, 8*16(RSP)
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FMOVD F10, 8*17(RSP)
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FMOVD F11, 8*18(RSP)
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FMOVD F12, 8*19(RSP)
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FMOVD F13, 8*20(RSP)
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FMOVD F14, 8*21(RSP)
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FMOVD F15, 8*22(RSP)
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// If called from an external code context, g will not be set.
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// Save R0, since runtime·load_g will clobber it.
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MOVW R0, 8(RSP) // signum
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BL runtime·load_g(SB)
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MOVD R1, 16(RSP)
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MOVD R2, 24(RSP)
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BL runtime·sigtrampgo(SB)
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// Restore callee-save registers.
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MOVD 8*4(RSP), R19
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MOVD 8*5(RSP), R20
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MOVD 8*6(RSP), R21
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MOVD 8*7(RSP), R22
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MOVD 8*8(RSP), R23
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MOVD 8*9(RSP), R24
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MOVD 8*10(RSP), R25
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MOVD 8*11(RSP), R26
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MOVD 8*12(RSP), R27
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MOVD 8*13(RSP), g
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MOVD 8*14(RSP), R29
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FMOVD 8*15(RSP), F8
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FMOVD 8*16(RSP), F9
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FMOVD 8*17(RSP), F10
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FMOVD 8*18(RSP), F11
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FMOVD 8*19(RSP), F12
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FMOVD 8*20(RSP), F13
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FMOVD 8*21(RSP), F14
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FMOVD 8*22(RSP), F15
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RET
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//
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// These trampolines help convert from Go calling convention to C calling convention.
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// They should be called with asmcgocall.
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// A pointer to the arguments is passed in R0.
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// A single int32 result is returned in R0.
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// (For more results, make an args/results structure.)
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TEXT runtime·pthread_attr_init_trampoline(SB),NOSPLIT,$0
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MOVD 0(R0), R0 // arg 1 - attr
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CALL libc_pthread_attr_init(SB)
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RET
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TEXT runtime·pthread_attr_destroy_trampoline(SB),NOSPLIT,$0
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MOVD 0(R0), R0 // arg 1 - attr
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CALL libc_pthread_attr_destroy(SB)
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RET
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TEXT runtime·pthread_attr_getstacksize_trampoline(SB),NOSPLIT,$0
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MOVD 8(R0), R1 // arg 2 - size
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MOVD 0(R0), R0 // arg 1 - attr
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CALL libc_pthread_attr_getstacksize(SB)
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RET
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TEXT runtime·pthread_attr_setdetachstate_trampoline(SB),NOSPLIT,$0
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MOVD 8(R0), R1 // arg 2 - state
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MOVD 0(R0), R0 // arg 1 - attr
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CALL libc_pthread_attr_setdetachstate(SB)
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RET
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TEXT runtime·pthread_create_trampoline(SB),NOSPLIT,$0
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MOVD 0(R0), R1 // arg 2 - attr
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MOVD 8(R0), R2 // arg 3 - start
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MOVD 16(R0), R3 // arg 4 - arg
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SUB $16, RSP
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MOVD RSP, R0 // arg 1 - &threadid (discard)
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CALL libc_pthread_create(SB)
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ADD $16, RSP
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RET
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TEXT runtime·pthread_self_trampoline(SB),NOSPLIT,$0
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MOVD R0, R19 // pointer to args
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CALL libc_pthread_self(SB)
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MOVD R0, 0(R19) // return value
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RET
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TEXT runtime·pthread_kill_trampoline(SB),NOSPLIT,$0
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MOVW 8(R0), R1 // arg 2 - sig
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MOVD 0(R0), R0 // arg 1 - thread
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CALL libc_pthread_kill(SB)
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RET
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// Exit the entire program (like C exit)
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TEXT runtime·exit(SB),NOSPLIT|NOFRAME,$0
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MOVW code+0(FP), R0 // arg 1 - status
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@ -248,109 +424,6 @@ TEXT runtime·obsdsigprocmask(SB),NOSPLIT,$0
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MOVW R0, ret+8(FP)
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RET
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TEXT runtime·sigfwd(SB),NOSPLIT,$0-32
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MOVW sig+8(FP), R0
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MOVD info+16(FP), R1
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MOVD ctx+24(FP), R2
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MOVD fn+0(FP), R11
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BL (R11) // Alignment for ELF ABI?
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RET
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TEXT runtime·sigtramp(SB),NOSPLIT,$192
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// Save callee-save registers in the case of signal forwarding.
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// Please refer to https://golang.org/issue/31827 .
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MOVD R19, 8*4(RSP)
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MOVD R20, 8*5(RSP)
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MOVD R21, 8*6(RSP)
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MOVD R22, 8*7(RSP)
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MOVD R23, 8*8(RSP)
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MOVD R24, 8*9(RSP)
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MOVD R25, 8*10(RSP)
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MOVD R26, 8*11(RSP)
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MOVD R27, 8*12(RSP)
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MOVD g, 8*13(RSP)
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MOVD R29, 8*14(RSP)
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FMOVD F8, 8*15(RSP)
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FMOVD F9, 8*16(RSP)
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FMOVD F10, 8*17(RSP)
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FMOVD F11, 8*18(RSP)
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FMOVD F12, 8*19(RSP)
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FMOVD F13, 8*20(RSP)
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FMOVD F14, 8*21(RSP)
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FMOVD F15, 8*22(RSP)
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// If called from an external code context, g will not be set.
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// Save R0, since runtime·load_g will clobber it.
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MOVW R0, 8(RSP) // signum
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MOVB runtime·iscgo(SB), R0
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CMP $0, R0
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BEQ 2(PC)
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BL runtime·load_g(SB)
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MOVD R1, 16(RSP)
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MOVD R2, 24(RSP)
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BL runtime·sigtrampgo(SB)
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// Restore callee-save registers.
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MOVD 8*4(RSP), R19
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MOVD 8*5(RSP), R20
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MOVD 8*6(RSP), R21
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MOVD 8*7(RSP), R22
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MOVD 8*8(RSP), R23
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MOVD 8*9(RSP), R24
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MOVD 8*10(RSP), R25
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MOVD 8*11(RSP), R26
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MOVD 8*12(RSP), R27
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MOVD 8*13(RSP), g
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MOVD 8*14(RSP), R29
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FMOVD 8*15(RSP), F8
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FMOVD 8*16(RSP), F9
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FMOVD 8*17(RSP), F10
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FMOVD 8*18(RSP), F11
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FMOVD 8*19(RSP), F12
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FMOVD 8*20(RSP), F13
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FMOVD 8*21(RSP), F14
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FMOVD 8*22(RSP), F15
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RET
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// int32 tfork(void *param, uintptr psize, M *mp, G *gp, void (*fn)(void));
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TEXT runtime·tfork(SB),NOSPLIT,$0
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// Copy mp, gp and fn off parent stack for use by child.
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MOVD mm+16(FP), R4
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MOVD gg+24(FP), R5
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MOVD fn+32(FP), R6
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MOVD param+0(FP), R0 // arg 1 - param
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MOVD psize+8(FP), R1 // arg 2 - psize
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MOVD $8, R8 // sys___tfork
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INVOKE_SYSCALL
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// Return if syscall failed.
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BCC 4(PC)
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NEG R0, R0
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MOVW R0, ret+40(FP)
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RET
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// In parent, return.
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CMP $0, R0
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BEQ 3(PC)
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MOVW R0, ret+40(FP)
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RET
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// Initialise m, g.
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MOVD R5, g
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MOVD R4, g_m(g)
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// Call fn.
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BL (R6)
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// fn should never return.
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MOVD $2, R8 // crash if reached
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MOVD R8, (R8)
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RET
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TEXT runtime·sigaltstack(SB),NOSPLIT,$0
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MOVD new+0(FP), R0 // arg 1 - new sigaltstack
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MOVD old+8(FP), R1 // arg 2 - old sigaltstack
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@ -10,8 +10,10 @@
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TEXT runtime·load_g(SB),NOSPLIT,$0
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#ifndef TLS_darwin
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#ifndef GOOS_openbsd
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MOVB runtime·iscgo(SB), R0
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CBZ R0, nocgo
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#endif
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#endif
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MRS_TPIDR_R0
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@ -27,8 +29,10 @@ nocgo:
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TEXT runtime·save_g(SB),NOSPLIT,$0
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#ifndef TLS_darwin
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#ifndef GOOS_openbsd
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MOVB runtime·iscgo(SB), R0
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CBZ R0, nocgo
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#endif
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#endif
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MRS_TPIDR_R0
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