mirror of
https://github.com/golang/go
synced 2024-09-15 22:20:06 +00:00
runtime: implement signal for linux/loong64
Contributors to the loong64 port are: Weining Lu <luweining@loongson.cn> Lei Wang <wanglei@loongson.cn> Lingqin Gong <gonglingqin@loongson.cn> Xiaolin Zhao <zhaoxiaolin@loongson.cn> Meidan Li <limeidan@loongson.cn> Xiaojuan Zhai <zhaixiaojuan@loongson.cn> Qiyuan Pu <puqiyuan@loongson.cn> Guoqi Chen <chenguoqi@loongson.cn> This port has been updated to Go 1.15.6: https://github.com/loongson/go Updates #46229 Change-Id: Ifa0229d2044dd53683de4a2b3ab965b16263f267 Reviewed-on: https://go-review.googlesource.com/c/go/+/368075 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Auto-Submit: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Xiaodong Liu
Gopher Robot
parent
c8de7628cb
commit
0084706528
212
src/runtime/defs_linux_loong64.go
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212
src/runtime/defs_linux_loong64.go
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// Generated using cgo, then manually converted into appropriate naming and code
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// for the Go runtime.
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// go tool cgo -godefs defs_linux.go defs1_linux.go defs2_linux.go
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package runtime
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import "unsafe"
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const (
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_EINTR = 0x4
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_EAGAIN = 0xb
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_ENOMEM = 0xc
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_ENOSYS = 0x26
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_PROT_NONE = 0x0
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_PROT_READ = 0x1
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_PROT_WRITE = 0x2
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_PROT_EXEC = 0x4
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_MAP_ANON = 0x20
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_MAP_PRIVATE = 0x2
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_MAP_FIXED = 0x10
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_MADV_DONTNEED = 0x4
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_MADV_FREE = 0x8
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_MADV_HUGEPAGE = 0xe
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_MADV_NOHUGEPAGE = 0xf
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_SA_RESTART = 0x10000000
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_SA_ONSTACK = 0x8000000
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_SA_SIGINFO = 0x4
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_SA_RESTORER = 0x0
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_SI_KERNEL = 0x80
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_SI_TIMER = -0x2
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_SIGHUP = 0x1
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_SIGINT = 0x2
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_SIGQUIT = 0x3
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_SIGILL = 0x4
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_SIGTRAP = 0x5
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_SIGABRT = 0x6
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_SIGBUS = 0x7
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_SIGFPE = 0x8
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_SIGKILL = 0x9
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_SIGUSR1 = 0xa
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_SIGSEGV = 0xb
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_SIGUSR2 = 0xc
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_SIGPIPE = 0xd
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_SIGALRM = 0xe
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_SIGSTKFLT = 0x10
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_SIGCHLD = 0x11
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_SIGCONT = 0x12
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_SIGSTOP = 0x13
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_SIGTSTP = 0x14
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_SIGTTIN = 0x15
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_SIGTTOU = 0x16
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_SIGURG = 0x17
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_SIGXCPU = 0x18
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_SIGXFSZ = 0x19
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_SIGVTALRM = 0x1a
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_SIGPROF = 0x1b
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_SIGWINCH = 0x1c
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_SIGIO = 0x1d
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_SIGPWR = 0x1e
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_SIGSYS = 0x1f
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_SIGRTMIN = 0x20
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_FPE_INTDIV = 0x1
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_FPE_INTOVF = 0x2
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_FPE_FLTDIV = 0x3
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_FPE_FLTOVF = 0x4
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_FPE_FLTUND = 0x5
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_FPE_FLTRES = 0x6
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_FPE_FLTINV = 0x7
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_FPE_FLTSUB = 0x8
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_BUS_ADRALN = 0x1
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_BUS_ADRERR = 0x2
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_BUS_OBJERR = 0x3
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_SEGV_MAPERR = 0x1
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_SEGV_ACCERR = 0x2
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_ITIMER_REAL = 0x0
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_ITIMER_VIRTUAL = 0x1
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_ITIMER_PROF = 0x2
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_CLOCK_THREAD_CPUTIME_ID = 0x3
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_SIGEV_THREAD_ID = 0x4
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_EPOLLIN = 0x1
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_EPOLLOUT = 0x4
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_EPOLLERR = 0x8
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_EPOLLHUP = 0x10
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_EPOLLRDHUP = 0x2000
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_EPOLLET = 0x80000000
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_EPOLL_CLOEXEC = 0x80000
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_EPOLL_CTL_ADD = 0x1
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_EPOLL_CTL_DEL = 0x2
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_EPOLL_CTL_MOD = 0x3
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)
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type timespec struct {
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tv_sec int64
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tv_nsec int64
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}
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//go:nosplit
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func (ts *timespec) setNsec(ns int64) {
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ts.tv_sec = ns / 1e9
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ts.tv_nsec = ns % 1e9
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}
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type timeval struct {
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tv_sec int64
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tv_usec int64
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}
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func (tv *timeval) set_usec(x int32) {
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tv.tv_usec = int64(x)
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}
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type itimerspec struct {
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it_interval timespec
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it_value timespec
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}
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type itimerval struct {
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it_interval timeval
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it_value timeval
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}
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type sigeventFields struct {
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value uintptr
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signo int32
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notify int32
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// below here is a union; sigev_notify_thread_id is the only field we use
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sigev_notify_thread_id int32
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}
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type sigevent struct {
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sigeventFields
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// Pad struct to the max size in the kernel.
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_ [_sigev_max_size - unsafe.Sizeof(sigeventFields{})]byte
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}
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type epollevent struct {
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events uint32
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pad_cgo_0 [4]byte
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data [8]byte // unaligned uintptr
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}
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const (
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_O_RDONLY = 0x0
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_O_NONBLOCK = 0x800
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_O_CLOEXEC = 0x80000
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)
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type sigactiont struct {
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sa_handler uintptr
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sa_flags uint64
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sa_mask uint64
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// Linux on loong64 does not have the sa_restorer field, but the setsig
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// function references it (for x86). Not much harm to include it at the end.
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sa_restorer uintptr
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}
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type siginfoFields struct {
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si_signo int32
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si_errno int32
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si_code int32
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__pad0 [1]int32
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// below here is a union; si_addr is the only field we use
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si_addr uint64
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}
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type siginfo struct {
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siginfoFields
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// Pad struct to the max size in the kernel.
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_ [_si_max_size - unsafe.Sizeof(siginfoFields{})]byte
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}
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type usigset struct {
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val [16]uint64
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}
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type stackt struct {
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ss_sp *byte
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ss_flags int32
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pad_cgo_0 [4]byte
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ss_size uintptr
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}
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type sigcontext struct {
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sc_pc uint64
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sc_regs [32]uint64
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sc_flags uint32
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sc_extcontext [0]uint64
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}
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type ucontext struct {
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uc_flags uint64
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uc_link *ucontext
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uc_stack stackt
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uc_sigmask usigset
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uc_x_unused [0]uint8
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uc_pad_cgo_0 [8]byte
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uc_mcontext sigcontext
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}
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75
src/runtime/signal_linux_loong64.go
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75
src/runtime/signal_linux_loong64.go
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// Copyright 2022 The Go Authors. All rights reserved.
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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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//go:build linux && loong64
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package runtime
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import (
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"internal/goarch"
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"unsafe"
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)
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type sigctxt struct {
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info *siginfo
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ctxt unsafe.Pointer
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}
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//go:nosplit
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//go:nowritebarrierrec
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func (c *sigctxt) regs() *sigcontext { return &(*ucontext)(c.ctxt).uc_mcontext }
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func (c *sigctxt) r0() uint64 { return c.regs().sc_regs[0] }
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func (c *sigctxt) r1() uint64 { return c.regs().sc_regs[1] }
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func (c *sigctxt) r2() uint64 { return c.regs().sc_regs[2] }
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func (c *sigctxt) r3() uint64 { return c.regs().sc_regs[3] }
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func (c *sigctxt) r4() uint64 { return c.regs().sc_regs[4] }
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func (c *sigctxt) r5() uint64 { return c.regs().sc_regs[5] }
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func (c *sigctxt) r6() uint64 { return c.regs().sc_regs[6] }
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func (c *sigctxt) r7() uint64 { return c.regs().sc_regs[7] }
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func (c *sigctxt) r8() uint64 { return c.regs().sc_regs[8] }
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func (c *sigctxt) r9() uint64 { return c.regs().sc_regs[9] }
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func (c *sigctxt) r10() uint64 { return c.regs().sc_regs[10] }
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func (c *sigctxt) r11() uint64 { return c.regs().sc_regs[11] }
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func (c *sigctxt) r12() uint64 { return c.regs().sc_regs[12] }
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func (c *sigctxt) r13() uint64 { return c.regs().sc_regs[13] }
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func (c *sigctxt) r14() uint64 { return c.regs().sc_regs[14] }
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func (c *sigctxt) r15() uint64 { return c.regs().sc_regs[15] }
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func (c *sigctxt) r16() uint64 { return c.regs().sc_regs[16] }
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func (c *sigctxt) r17() uint64 { return c.regs().sc_regs[17] }
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func (c *sigctxt) r18() uint64 { return c.regs().sc_regs[18] }
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func (c *sigctxt) r19() uint64 { return c.regs().sc_regs[19] }
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func (c *sigctxt) r20() uint64 { return c.regs().sc_regs[20] }
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func (c *sigctxt) r21() uint64 { return c.regs().sc_regs[21] }
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func (c *sigctxt) r22() uint64 { return c.regs().sc_regs[22] }
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func (c *sigctxt) r23() uint64 { return c.regs().sc_regs[23] }
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func (c *sigctxt) r24() uint64 { return c.regs().sc_regs[24] }
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func (c *sigctxt) r25() uint64 { return c.regs().sc_regs[25] }
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func (c *sigctxt) r26() uint64 { return c.regs().sc_regs[26] }
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func (c *sigctxt) r27() uint64 { return c.regs().sc_regs[27] }
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func (c *sigctxt) r28() uint64 { return c.regs().sc_regs[28] }
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func (c *sigctxt) r29() uint64 { return c.regs().sc_regs[29] }
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func (c *sigctxt) r30() uint64 { return c.regs().sc_regs[30] }
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func (c *sigctxt) r31() uint64 { return c.regs().sc_regs[31] }
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func (c *sigctxt) sp() uint64 { return c.regs().sc_regs[3] }
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//go:nosplit
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//go:nowritebarrierrec
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func (c *sigctxt) pc() uint64 { return c.regs().sc_pc }
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func (c *sigctxt) link() uint64 { return c.regs().sc_regs[1] }
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func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
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func (c *sigctxt) sigaddr() uint64 { return c.info.si_addr }
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func (c *sigctxt) set_r31(x uint64) { c.regs().sc_regs[31] = x }
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func (c *sigctxt) set_r22(x uint64) { c.regs().sc_regs[22] = x }
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func (c *sigctxt) set_pc(x uint64) { c.regs().sc_pc = x }
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func (c *sigctxt) set_sp(x uint64) { c.regs().sc_regs[3] = x }
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func (c *sigctxt) set_link(x uint64) { c.regs().sc_regs[1] = x }
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func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) }
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func (c *sigctxt) set_sigaddr(x uint64) {
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*(*uintptr)(add(unsafe.Pointer(c.info), 2*goarch.PtrSize)) = uintptr(x)
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}
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98
src/runtime/signal_loong64.go
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98
src/runtime/signal_loong64.go
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// Copyright 2022 The Go Authors. All rights reserved.
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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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//go:build linux && loong64
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package runtime
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import (
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"internal/abi"
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"internal/goarch"
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"unsafe"
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)
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func dumpregs(c *sigctxt) {
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print("r0 ", hex(c.r0()), "\t")
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print("r1 ", hex(c.r1()), "\n")
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print("r2 ", hex(c.r2()), "\t")
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print("r3 ", hex(c.r3()), "\n")
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print("r4 ", hex(c.r4()), "\t")
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print("r5 ", hex(c.r5()), "\n")
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print("r6 ", hex(c.r6()), "\t")
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print("r7 ", hex(c.r7()), "\n")
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print("r8 ", hex(c.r8()), "\t")
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print("r9 ", hex(c.r9()), "\n")
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print("r10 ", hex(c.r10()), "\t")
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print("r11 ", hex(c.r11()), "\n")
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print("r12 ", hex(c.r12()), "\t")
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print("r13 ", hex(c.r13()), "\n")
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print("r14 ", hex(c.r14()), "\t")
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print("r15 ", hex(c.r15()), "\n")
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print("r16 ", hex(c.r16()), "\t")
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print("r17 ", hex(c.r17()), "\n")
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print("r18 ", hex(c.r18()), "\t")
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print("r19 ", hex(c.r19()), "\n")
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print("r20 ", hex(c.r20()), "\t")
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print("r21 ", hex(c.r21()), "\n")
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print("r22 ", hex(c.r22()), "\t")
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print("r23 ", hex(c.r23()), "\n")
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print("r24 ", hex(c.r24()), "\t")
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print("r25 ", hex(c.r25()), "\n")
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print("r26 ", hex(c.r26()), "\t")
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print("r27 ", hex(c.r27()), "\n")
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print("r28 ", hex(c.r28()), "\t")
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print("r29 ", hex(c.r29()), "\n")
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print("r30 ", hex(c.r30()), "\t")
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print("r31 ", hex(c.r31()), "\n")
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print("pc ", hex(c.pc()), "\t")
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print("link ", hex(c.link()), "\n")
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}
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//go:nosplit
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//go:nowritebarrierrec
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func (c *sigctxt) sigpc() uintptr { return uintptr(c.pc()) }
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func (c *sigctxt) sigsp() uintptr { return uintptr(c.sp()) }
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func (c *sigctxt) siglr() uintptr { return uintptr(c.link()) }
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func (c *sigctxt) fault() uintptr { return uintptr(c.sigaddr()) }
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// preparePanic sets up the stack to look like a call to sigpanic.
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func (c *sigctxt) preparePanic(sig uint32, gp *g) {
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// We arrange link, and pc to pretend the panicking
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// function calls sigpanic directly.
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// Always save LINK to stack so that panics in leaf
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// functions are correctly handled. This smashes
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// the stack frame but we're not going back there
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// anyway.
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sp := c.sp() - goarch.PtrSize
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c.set_sp(sp)
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*(*uint64)(unsafe.Pointer(uintptr(sp))) = c.link()
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pc := gp.sigpc
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if shouldPushSigpanic(gp, pc, uintptr(c.link())) {
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// Make it look the like faulting PC called sigpanic.
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c.set_link(uint64(pc))
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}
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// In case we are panicking from external C code
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sigpanicPC := uint64(abi.FuncPCABIInternal(sigpanic))
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c.set_r31(sigpanicPC >> 32 << 32) // RSB register
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c.set_r22(uint64(uintptr(unsafe.Pointer(gp))))
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c.set_pc(sigpanicPC)
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}
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func (c *sigctxt) pushCall(targetPC, resumePC uintptr) {
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// Push the LR to stack, as we'll clobber it in order to
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// push the call. The function being pushed is responsible
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// for restoring the LR and setting the SP back.
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// This extra slot is known to gentraceback.
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sp := c.sp() - 8
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c.set_sp(sp)
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*(*uint64)(unsafe.Pointer(uintptr(sp))) = c.link()
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// Set up PC and LR to pretend the function being signaled
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// calls targetPC at resumePC.
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c.set_link(uint64(resumePC))
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c.set_pc(uint64(targetPC))
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}
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