github.com/varialus/godfly@v0.0.0-20130904042352-1934f9f095ab/src/pkg/syscall/syscall_linux_arm.go (about) 1 // Copyright 2009 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 func Getpagesize() int { return 4096 } 10 11 func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } 12 13 func NsecToTimespec(nsec int64) (ts Timespec) { 14 ts.Sec = int32(nsec / 1e9) 15 ts.Nsec = int32(nsec % 1e9) 16 return 17 } 18 19 func NsecToTimeval(nsec int64) (tv Timeval) { 20 nsec += 999 // round up to microsecond 21 tv.Sec = int32(nsec / 1e9) 22 tv.Usec = int32(nsec % 1e9 / 1e3) 23 return 24 } 25 26 // Seek is defined in assembly. 27 28 func Seek(fd int, offset int64, whence int) (newoffset int64, err error) 29 30 //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) 31 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) 32 //sys bind(s int, addr uintptr, addrlen _Socklen) (err error) 33 //sys connect(s int, addr uintptr, addrlen _Socklen) (err error) 34 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32 35 //sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32 36 //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) 37 //sys setsockopt(s int, level int, name int, val uintptr, vallen uintptr) (err error) 38 //sysnb socket(domain int, typ int, proto int) (fd int, err error) 39 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 40 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 41 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 42 //sys sendto(s int, buf []byte, flags int, to uintptr, addrlen _Socklen) (err error) 43 //sysnb socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) 44 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) 45 //sys sendmsg(s int, msg *Msghdr, flags int) (err error) 46 47 // 64-bit file system and 32-bit uid calls 48 // (16-bit uid calls are not always supported in newer kernels) 49 //sys Chown(path string, uid int, gid int) (err error) = SYS_CHOWN32 50 //sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32 51 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 52 //sysnb Getegid() (egid int) = SYS_GETEGID32 53 //sysnb Geteuid() (euid int) = SYS_GETEUID32 54 //sysnb Getgid() (gid int) = SYS_GETGID32 55 //sysnb Getuid() (uid int) = SYS_GETUID32 56 //sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32 57 //sys Listen(s int, n int) (err error) 58 //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 59 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 60 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT 61 //sys Setfsgid(gid int) (err error) = SYS_SETFSGID32 62 //sys Setfsuid(uid int) (err error) = SYS_SETFSUID32 63 //sysnb Setgid(gid int) (err error) = SYS_SETGID32 64 //sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32 65 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32 66 //sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32 67 //sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32 68 //sys Shutdown(fd int, how int) (err error) 69 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) 70 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 71 72 // Vsyscalls on amd64. 73 //sysnb Gettimeofday(tv *Timeval) (err error) 74 //sysnb Time(t *Time_t) (tt Time_t, err error) 75 76 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 77 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 78 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 79 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 80 81 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) 82 83 func Fstatfs(fd int, buf *Statfs_t) (err error) { 84 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 85 if e != 0 { 86 err = e 87 } 88 return 89 } 90 91 func Statfs(path string, buf *Statfs_t) (err error) { 92 pathp, err := BytePtrFromString(path) 93 if err != nil { 94 return err 95 } 96 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 97 if e != 0 { 98 err = e 99 } 100 return 101 } 102 103 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { 104 page := uintptr(offset / 4096) 105 if offset != int64(page)*4096 { 106 return 0, EINVAL 107 } 108 return mmap2(addr, length, prot, flags, fd, page) 109 } 110 111 type rlimit32 struct { 112 Cur uint32 113 Max uint32 114 } 115 116 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_GETRLIMIT 117 118 const rlimInf32 = ^uint32(0) 119 const rlimInf64 = ^uint64(0) 120 121 func Getrlimit(resource int, rlim *Rlimit) (err error) { 122 err = prlimit(0, resource, nil, rlim) 123 if err != ENOSYS { 124 return err 125 } 126 127 rl := rlimit32{} 128 err = getrlimit(resource, &rl) 129 if err != nil { 130 return 131 } 132 133 if rl.Cur == rlimInf32 { 134 rlim.Cur = rlimInf64 135 } else { 136 rlim.Cur = uint64(rl.Cur) 137 } 138 139 if rl.Max == rlimInf32 { 140 rlim.Max = rlimInf64 141 } else { 142 rlim.Max = uint64(rl.Max) 143 } 144 return 145 } 146 147 //sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT 148 149 func Setrlimit(resource int, rlim *Rlimit) (err error) { 150 err = prlimit(0, resource, rlim, nil) 151 if err != ENOSYS { 152 return err 153 } 154 155 rl := rlimit32{} 156 if rlim.Cur == rlimInf64 { 157 rl.Cur = rlimInf32 158 } else if rlim.Cur < uint64(rlimInf32) { 159 rl.Cur = uint32(rlim.Cur) 160 } else { 161 return EINVAL 162 } 163 if rlim.Max == rlimInf64 { 164 rl.Max = rlimInf32 165 } else if rlim.Max < uint64(rlimInf32) { 166 rl.Max = uint32(rlim.Max) 167 } else { 168 return EINVAL 169 } 170 171 return setrlimit(resource, &rl) 172 } 173 174 func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) } 175 176 func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) } 177 178 func (iov *Iovec) SetLen(length int) { 179 iov.Len = uint32(length) 180 } 181 182 func (msghdr *Msghdr) SetControllen(length int) { 183 msghdr.Controllen = uint32(length) 184 } 185 186 func (cmsg *Cmsghdr) SetLen(length int) { 187 cmsg.Len = uint32(length) 188 }