mirror of https://github.com/golang/go.git
runtime: added go files for linux/mips64{,le} support
Change-Id: I14b537922b97d4bce9e0523d98a822da906348f1 Reviewed-on: https://go-review.googlesource.com/14447 Reviewed-by: Minux Ma <minux@golang.org>
This commit is contained in:
Yao Zhang
Minux Ma
parent
980b00f55b
commit
a36dda7880
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@ -0,0 +1,183 @@
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// +build mips64 mips64le
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// +build linux
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package runtime
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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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_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 = 0x800
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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_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 = 0x8
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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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_SIGEMT = 0x7
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_SIGFPE = 0x8
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_SIGKILL = 0x9
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_SIGBUS = 0xa
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_SIGSEGV = 0xb
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_SIGSYS = 0xc
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_SIGPIPE = 0xd
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_SIGALRM = 0xe
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_SIGUSR1 = 0x10
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_SIGUSR2 = 0x11
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_SIGCHLD = 0x12
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_SIGPWR = 0x13
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_SIGWINCH = 0x14
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_SIGURG = 0x15
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_SIGIO = 0x16
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_SIGSTOP = 0x17
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_SIGTSTP = 0x18
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_SIGCONT = 0x19
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_SIGTTIN = 0x1a
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_SIGTTOU = 0x1b
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_SIGVTALRM = 0x1c
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_SIGPROF = 0x1d
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_SIGXCPU = 0x1e
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_SIGXFSZ = 0x1f
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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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_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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//struct Sigset {
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// uint64 sig[1];
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//};
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//typedef uint64 Sigset;
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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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func (ts *timespec) set_sec(x int64) {
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ts.tv_sec = x
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}
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func (ts *timespec) set_nsec(x int32) {
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ts.tv_nsec = int64(x)
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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 sigactiont struct {
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sa_flags uint32
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sa_handler uintptr
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sa_mask [2]uint64
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// linux header does not have sa_restorer field,
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// but it is used in setsig(). it is no harm to put it here
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sa_restorer uintptr
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}
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type siginfo struct {
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si_signo int32
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si_code int32
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si_errno 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 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 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_CLOEXEC = 0x80000
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_SA_RESTORER = 0
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)
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type sigaltstackt struct {
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ss_sp *byte
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ss_size uintptr
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ss_flags int32
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}
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type sigcontext struct {
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sc_regs [32]uint64
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sc_fpregs [32]uint64
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sc_mdhi uint64
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sc_hi1 uint64
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sc_hi2 uint64
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sc_hi3 uint64
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sc_mdlo uint64
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sc_lo1 uint64
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sc_lo2 uint64
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sc_lo3 uint64
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sc_pc uint64
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sc_fpc_csr uint32
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sc_used_math uint32
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sc_dsp uint32
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sc_reserved uint32
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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 sigaltstackt
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uc_mcontext sigcontext
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uc_sigmask uint64
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}
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// Copyright 2015 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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// +build mips64 mips64le
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// +build linux
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package runtime
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import "unsafe"
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// On mips64, Linux limits the user address space to 40 bits (see
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// TASK_SIZE64 in the Linux kernel). This has grown over time,
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// so here we allow 48 bit addresses.
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//
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// In addition to the 16 bits taken from the top, we can take 3 from the
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// bottom, because node must be pointer-aligned, giving a total of 19 bits
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// of count.
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const (
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addrBits = 48
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cntBits = 64 - addrBits + 3
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)
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func lfstackPack(node *lfnode, cnt uintptr) uint64 {
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return uint64(uintptr(unsafe.Pointer(node)))<<(64-addrBits) | uint64(cnt&(1<<cntBits-1))
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}
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func lfstackUnpack(val uint64) (node *lfnode, cnt uintptr) {
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node = (*lfnode)(unsafe.Pointer(uintptr(val >> cntBits << 3)))
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cnt = uintptr(val & (1<<cntBits - 1))
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return
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}
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@ -0,0 +1,18 @@
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// Copyright 2015 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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// +build mips64 mips64le
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// +build linux
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package runtime
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var randomNumber uint32
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//go:nosplit
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func cputicks() int64 {
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// Currently cputicks() is used in blocking profiler and to seed fastrand1().
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// nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
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// randomNumber provides better seeding of fastrand1.
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return nanotime() + int64(randomNumber)
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}
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@ -0,0 +1,67 @@
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// Copyright 2015 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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// +build linux
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// +build mips64 mips64le
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package runtime
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import "unsafe"
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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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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[29] }
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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[31] }
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func (c *sigctxt) lo() uint64 { return c.regs().sc_mdlo }
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func (c *sigctxt) hi() uint64 { return c.regs().sc_mdhi }
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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_r30(x uint64) { c.regs().sc_regs[30] = 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[29] = x }
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func (c *sigctxt) set_link(x uint64) { c.regs().sc_regs[31] = 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*ptrSize)) = uintptr(x)
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}
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@ -0,0 +1,180 @@
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// Copyright 2015 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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// +build linux
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// +build mips64 mips64le
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package runtime
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import "unsafe"
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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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print("lo ", hex(c.lo()), "\t")
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print("hi ", hex(c.hi()), "\n")
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}
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var crashing int32
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// May run during STW, so write barriers are not allowed.
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//go:nowritebarrier
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func sighandler(sig uint32, info *siginfo, ctxt unsafe.Pointer, gp *g) {
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_g_ := getg()
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c := &sigctxt{info, ctxt}
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if sig == _SIGPROF {
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sigprof(uintptr(c.pc()), uintptr(c.sp()), uintptr(c.link()), gp, _g_.m)
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return
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}
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flags := int32(_SigThrow)
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if sig < uint32(len(sigtable)) {
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flags = sigtable[sig].flags
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}
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if c.sigcode() != _SI_USER && flags&_SigPanic != 0 {
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// Make it look like a call to the signal func.
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// Have to pass arguments out of band since
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// augmenting the stack frame would break
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// the unwinding code.
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gp.sig = sig
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gp.sigcode0 = uintptr(c.sigcode())
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gp.sigcode1 = uintptr(c.sigaddr())
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gp.sigpc = uintptr(c.pc())
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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() - 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 := uintptr(gp.sigpc)
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// If we don't recognize the PC as code
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// but we do recognize the link register as code,
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// then assume this was a call to non-code and treat like
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// pc == 0, to make unwinding show the context.
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if pc != 0 && findfunc(pc) == nil && findfunc(uintptr(c.link())) != nil {
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pc = 0
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}
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// Don't bother saving PC if it's zero, which is
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// probably a call to a nil func: the old link register
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// is more useful in the stack trace.
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if pc != 0 {
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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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c.set_r30(uint64(uintptr(unsafe.Pointer(gp))))
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c.set_pc(uint64(funcPC(sigpanic)))
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return
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}
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|
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if c.sigcode() == _SI_USER || flags&_SigNotify != 0 {
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if sigsend(sig) {
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return
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}
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}
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|
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if flags&_SigKill != 0 {
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exit(2)
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}
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|
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if flags&_SigThrow == 0 {
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return
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}
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_g_.m.throwing = 1
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_g_.m.caughtsig.set(gp)
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|
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if crashing == 0 {
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startpanic()
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}
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if sig < uint32(len(sigtable)) {
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print(sigtable[sig].name, "\n")
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} else {
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print("Signal ", sig, "\n")
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}
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||||
print("PC=", hex(c.pc()), " m=", _g_.m.id, "\n")
|
||||
if _g_.m.lockedg != nil && _g_.m.ncgo > 0 && gp == _g_.m.g0 {
|
||||
print("signal arrived during cgo execution\n")
|
||||
gp = _g_.m.lockedg
|
||||
}
|
||||
print("\n")
|
||||
|
||||
level, _, docrash := gotraceback()
|
||||
if level > 0 {
|
||||
goroutineheader(gp)
|
||||
tracebacktrap(uintptr(c.pc()), uintptr(c.sp()), uintptr(c.link()), gp)
|
||||
if crashing > 0 && gp != _g_.m.curg && _g_.m.curg != nil && readgstatus(_g_.m.curg)&^_Gscan == _Grunning {
|
||||
// tracebackothers on original m skipped this one; trace it now.
|
||||
goroutineheader(_g_.m.curg)
|
||||
traceback(^uintptr(0), ^uintptr(0), 0, gp)
|
||||
} else if crashing == 0 {
|
||||
tracebackothers(gp)
|
||||
print("\n")
|
||||
}
|
||||
dumpregs(c)
|
||||
}
|
||||
|
||||
if docrash {
|
||||
crashing++
|
||||
if crashing < sched.mcount {
|
||||
// There are other m's that need to dump their stacks.
|
||||
// Relay SIGQUIT to the next m by sending it to the current process.
|
||||
// All m's that have already received SIGQUIT have signal masks blocking
|
||||
// receipt of any signals, so the SIGQUIT will go to an m that hasn't seen it yet.
|
||||
// When the last m receives the SIGQUIT, it will fall through to the call to
|
||||
// crash below. Just in case the relaying gets botched, each m involved in
|
||||
// the relay sleeps for 5 seconds and then does the crash/exit itself.
|
||||
// In expected operation, the last m has received the SIGQUIT and run
|
||||
// crash/exit and the process is gone, all long before any of the
|
||||
// 5-second sleeps have finished.
|
||||
print("\n-----\n\n")
|
||||
raiseproc(_SIGQUIT)
|
||||
usleep(5 * 1000 * 1000)
|
||||
}
|
||||
crash()
|
||||
}
|
||||
|
||||
exit(2)
|
||||
}
|
||||
Loading…
Reference in New Issue