github.com/code-reading/golang@v0.0.0-20220303082512-ba5bc0e589a3/go/src/syscall/syscall_linux_riscv64.go (about) 1 // Copyright 2019 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package syscall 6 7 import "unsafe" 8 9 // archHonorsR2 captures the fact that r2 is honored by the 10 // runtime.GOARCH. Syscall conventions are generally r1, r2, err := 11 // syscall(trap, ...). Not all architectures define r2 in their 12 // ABI. See "man syscall". 13 const archHonorsR2 = true 14 15 const _SYS_setgroups = SYS_SETGROUPS 16 17 func EpollCreate(size int) (fd int, err error) { 18 if size <= 0 { 19 return -1, EINVAL 20 } 21 return EpollCreate1(0) 22 } 23 24 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT 25 //sys Fchown(fd int, uid int, gid int) (err error) 26 //sys Fstat(fd int, stat *Stat_t) (err error) 27 //sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) 28 //sys fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) 29 //sys Fstatfs(fd int, buf *Statfs_t) (err error) 30 //sys Ftruncate(fd int, length int64) (err error) 31 //sysnb Getegid() (egid int) 32 //sysnb Geteuid() (euid int) 33 //sysnb Getgid() (gid int) 34 //sysnb Getrlimit(resource int, rlim *Rlimit) (err error) 35 //sysnb Getuid() (uid int) 36 //sys Listen(s int, n int) (err error) 37 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 38 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 39 //sys renameat2(olddirfd int, oldpath string, newdirfd int, newpath string, flags uint) (err error) 40 //sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK 41 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) 42 //sys Setfsgid(gid int) (err error) 43 //sys Setfsuid(uid int) (err error) 44 //sysnb Setrlimit(resource int, rlim *Rlimit) (err error) 45 //sys Shutdown(fd int, how int) (err error) 46 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) 47 48 func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) { 49 return renameat2(olddirfd, oldpath, newdirfd, newpath, 0) 50 } 51 52 func Stat(path string, stat *Stat_t) (err error) { 53 return Fstatat(_AT_FDCWD, path, stat, 0) 54 } 55 56 func Lchown(path string, uid int, gid int) (err error) { 57 return Fchownat(_AT_FDCWD, path, uid, gid, _AT_SYMLINK_NOFOLLOW) 58 } 59 60 func Lstat(path string, stat *Stat_t) (err error) { 61 return Fstatat(_AT_FDCWD, path, stat, _AT_SYMLINK_NOFOLLOW) 62 } 63 64 //sys Statfs(path string, buf *Statfs_t) (err error) 65 //sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) 66 //sys Truncate(path string, length int64) (err error) 67 //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) 68 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) 69 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 70 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 71 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) 72 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) 73 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) 74 //sysnb socket(domain int, typ int, proto int) (fd int, err error) 75 //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) 76 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 77 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 78 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 79 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) 80 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) 81 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) 82 //sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) 83 84 type sigset_t struct { 85 X__val [16]uint64 86 } 87 88 //sys pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *sigset_t) (n int, err error) = SYS_PSELECT6 89 90 func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) { 91 var ts *Timespec 92 if timeout != nil { 93 ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000} 94 } 95 return pselect(nfd, r, w, e, ts, nil) 96 } 97 98 //sysnb Gettimeofday(tv *Timeval) (err error) 99 100 func setTimespec(sec, nsec int64) Timespec { 101 return Timespec{Sec: sec, Nsec: nsec} 102 } 103 104 func setTimeval(sec, usec int64) Timeval { 105 return Timeval{Sec: sec, Usec: usec} 106 } 107 108 func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) { 109 if tv == nil { 110 return utimensat(dirfd, path, nil, 0) 111 } 112 113 ts := []Timespec{ 114 NsecToTimespec(TimevalToNsec(tv[0])), 115 NsecToTimespec(TimevalToNsec(tv[1])), 116 } 117 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) 118 } 119 120 func Time(t *Time_t) (Time_t, error) { 121 var tv Timeval 122 err := Gettimeofday(&tv) 123 if err != nil { 124 return 0, err 125 } 126 if t != nil { 127 *t = Time_t(tv.Sec) 128 } 129 return Time_t(tv.Sec), nil 130 } 131 132 func Utime(path string, buf *Utimbuf) error { 133 tv := []Timeval{ 134 {Sec: buf.Actime}, 135 {Sec: buf.Modtime}, 136 } 137 return Utimes(path, tv) 138 } 139 140 func utimes(path string, tv *[2]Timeval) (err error) { 141 if tv == nil { 142 return utimensat(_AT_FDCWD, path, nil, 0) 143 } 144 145 ts := []Timespec{ 146 NsecToTimespec(TimevalToNsec(tv[0])), 147 NsecToTimespec(TimevalToNsec(tv[1])), 148 } 149 return utimensat(_AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) 150 } 151 152 func Pipe(p []int) (err error) { 153 if len(p) != 2 { 154 return EINVAL 155 } 156 var pp [2]_C_int 157 err = pipe2(&pp, 0) 158 if err == nil { 159 p[0] = int(pp[0]) 160 p[1] = int(pp[1]) 161 } 162 return 163 } 164 165 //sysnb pipe2(p *[2]_C_int, flags int) (err error) 166 167 func Pipe2(p []int, flags int) (err error) { 168 if len(p) != 2 { 169 return EINVAL 170 } 171 var pp [2]_C_int 172 err = pipe2(&pp, flags) 173 if err == nil { 174 p[0] = int(pp[0]) 175 p[1] = int(pp[1]) 176 } 177 return 178 } 179 180 func (r *PtraceRegs) PC() uint64 { return r.Pc } 181 182 func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc } 183 184 func (iov *Iovec) SetLen(length int) { 185 iov.Len = uint64(length) 186 } 187 188 func (msghdr *Msghdr) SetControllen(length int) { 189 msghdr.Controllen = uint64(length) 190 } 191 192 func (cmsg *Cmsghdr) SetLen(length int) { 193 cmsg.Len = uint64(length) 194 } 195 196 func InotifyInit() (fd int, err error) { 197 return InotifyInit1(0) 198 } 199 200 //sys ppoll(fds *pollFd, nfds int, timeout *Timespec, sigmask *sigset_t) (n int, err error) 201 202 func Pause() error { 203 _, err := ppoll(nil, 0, nil, nil) 204 return err 205 } 206 207 func rawVforkSyscall(trap, a1 uintptr) (r1 uintptr, err Errno)