ref: 82eecd5a321aa3c619437a21997aa73c33c31d3c
dir: /lib/sys/sys+plan9-x64.myr/
use "systypes"
pkg sys =
type scno = int64 /* syscall */
type pid = int32 /* process id */
type fdopt = int32 /* fd options */
type fd = int32 /* fd */
type rflags = int32 /* rfork flags */
type tos = struct
prof : prof
cyclefreq : uint64
kcycles : int64
pcycles : int64
pid : pid
clock : uint32
;;
type prof = struct
pp : byte# /* plink */
next : byte# /* plink */
last : byte# /* plink */
first : byte# /* plink */
pid : pid /* plink */
what : uint32 /* plink */
;;
const Npriv : size = 16 /* must be kept in sync with _myrrt+plan9.s */
const Maxerr : size = 128
const Oread : fdopt = 0
const Owrite : fdopt = 1
const Ordwr : fdopt = 2
const Oexec : fdopt = 3
const Otrunc : fdopt = 16
const Ocexec : fdopt = 32
const Orclose : fdopt = 64
const Oexcl : fdopt = 0x1000
const Qtdir : int = 0x80
const Qtappend : int = 0x40
const Qtexcl : int = 0x20
const Qtmount : int = 0x10
const Qtauth : int = 0x08
const Qttmp : int = 0x04
const Qtfile : int = 0x00
const Dmdir : int = 0x80000000
const Dmappend : int = 0x40000000
const Dmexcl : int = 0x20000000
const Dmmount : int = 0x10000000
const Dmauth : int = 0x08000000
const Dmtmp : int = 0x04000000
const Dmread : int = 0x4
const Dmwrite : int = 0x2
const Dmexec : int = 0x1
const Rfnameg : rflags = 1 << 0
const Rfenvg : rflags = 1 << 1
const Rffdg : rflags = 1 << 2
const Rfnoteg : rflags = 1 << 3
const Rfproc : rflags = 1 << 4
const Rfmem : rflags = 1 << 5
const Rfnowait : rflags = 1 << 6
const Rfcnameg : rflags = 1 << 10
const Rfcenvg : rflags = 1 << 11
const Rfcfdg : rflags = 1 << 12
const Rfrend : rflags = 1 << 13
const Rfnomnt : rflags = 1 << 14
const Syssysr1 : scno = 0
const Sys_errstr : scno = 1
const Sysbind : scno = 2
const Syschdir : scno = 3
const Sysclose : scno = 4
const Sysdup : scno = 5
const Sysalarm : scno = 6
const Sysexec : scno = 7
const Sysexits : scno = 8
const Sys_fsession : scno = 9
const Sysfauth : scno = 10
const Sys_fstat : scno = 11
const Syssegbrk : scno = 12
const Sys_mount : scno = 13
const Sysopen : scno = 14
const Sys_read : scno = 15
const Sysoseek : scno = 16
const Syssleep : scno = 17
const Sys_stat : scno = 18
const Sysrfork : scno = 19
const Sys_write : scno = 20
const Syspipe : scno = 21
const Syscreate : scno = 22
const Sysfd2path : scno = 23
const Sysbrk_ : scno = 24
const Sysremove : scno = 25
const Sys_wstat : scno = 26
const Sys_fwstat : scno = 27
const Sysnotify : scno = 28
const Sysnoted : scno = 29
const Syssegattach : scno = 30
const Syssegdetach : scno = 31
const Syssegfree : scno = 32
const Syssegflush : scno = 33
const Sysrendezvous : scno = 34
const Sysunmount : scno = 35
const Sys_wait : scno = 36
const Syssemacquire : scno = 37
const Syssemrelease : scno = 38
const Sysseek : scno = 39
const Sysfversion : scno = 40
const Syserrstr : scno = 41
const Sysstat : scno = 42
const Sysfstat : scno = 43
const Syswstat : scno = 44
const Sysfwstat : scno = 45
const Sysmount : scno = 46
const Sysawait : scno = 47
const Syspread : scno = 50
const Syspwrite : scno = 51
const Systsemacquire : scno = 52
const Sys_nsec : scno = 53
const sysr1 : (-> int64)
const bind : (nm : byte[:], old : byte[:] -> int64)
const chdir : (dir : byte[:] -> int64)
const close : (fd : fd -> int64)
const dup : (old : fd, new : fd -> fd)
const alarm : (msec : uint32 -> int64)
const exits : (msg : byte[:] -> int64)
const fauth : (fd : fd, name : byte[:] -> int64)
const segbrk : (saddr : void#, addr : void# -> int64)
const open : (path : byte[:], opt : fdopt -> fd)
const sleep : (msec : uint32 -> int64)
const rfork : (rflags : rflags -> pid)
const pipe : (fds : fd[2]# -> int64)
const create : (path : byte[:], opt : fdopt, perm : int -> fd)
const fd2path : (fd : fd, path : byte[:] -> int64)
const remove : (path : byte[:] -> int64)
const notify : (fn : (a : void#, c : char# -> int64) -> int64)
const noted : (v : int32 -> int64)
const segattach : (attr : int32, class : byte[:], va : void#, len : uint32 -> int64)
const segdetach : (va : void# -> int64)
const segfree : (va : byte#, len : size -> int64)
const segflush : (va : void#, len : uint32 -> int64)
const unmount : (name : byte[:], old : byte[:] -> int64)
const errstr : (buf : byte[:] -> int64)
const _errstr : (buf : byte[:] -> int64)
const stat : (name : byte[:], edir : byte[:] -> int64)
const fstat : (fd : fd, edir : byte[:] -> int64)
const wstat : (name : byte[:], edir : byte[:] -> int64)
const fwstat : (fd : byte[:], edir : byte[:] -> int64)
const seek : (fd : fd, len : off, ty : int64 -> off)
const mount : (fd : fd, afd : fd, old : byte[:], flag : int32, aname : byte[:] -> int64)
const await : (buf : byte[:] -> int64)
const pread : (fd : fd, buf : byte[:], off : off -> size)
const pwrite : (fd : fd, buf : byte[:], off : off -> size)
const exec : (bin : byte[:], args : byte[:][:] -> int64)
const brk_ : (endp : byte# -> int64)
const nsec : (-> uint64)
const semacquire : (addr : int32#, block : int -> int)
const tsemacquire : (addr : int32#, ms : int32 -> int)
const semrelease : (addr : int32#, count : int32 -> int32)
const rendezvous : (tag : void#, val : void# -> void#)
extern const alloca : (sz : size -> byte#)
extern var tosptr : tos#
extern var curbrk : byte#
const atexit : (fn : (-> void) -> void)
;;
var exitfn : (-> void)[128]
var nexit : size
const atexit = {fn
exitfn[nexit++] = fn
}
const __fini__ = {
for var i = 0; i < nexit; i++
exitfn[i]()
;;
}
/* asm stub from syscall.s */
extern const syscall : (scno : scno, args : ... -> int64)
/* asm stubs from util+plan9.s */
extern const cstring : (str : byte[:] -> byte#)
/*
ABI mismatch: Plan 9 aligns all arguments individually to
8 bytes, Myrddin uses natural alignment (min(sizeof(t), 16).
Cast to a 64 bit type to paper over this.
*/
generic a = {a : @t; -> (a : uint64)}
generic s = {a : @t; -> (a : int64)}
generic p = {a : @t; -> (a : byte#)}
const sysr1 = {; -> syscall(Syssysr1)}
const bind = {name, old; -> syscall(Sysbind, cstring(name), cstring(old))}
const chdir = {dir; -> syscall(Syschdir, cstring(dir)) }
const close = {fd; -> syscall(Sysclose, a(fd))}
const dup = {ofd, nfd; -> (syscall(Sysdup, a(ofd), a(nfd)) : fd)}
const alarm = {msec; -> syscall(Sysalarm, a(msec))}
const exits = {msg; -> syscall(Sysexits, cstring(msg))}
const fauth = {fd, aname; -> syscall(Sysfauth, a(fd), cstring(aname))}
const segbrk = {saddr, addr; -> syscall(Syssegbrk, a(saddr), a(addr))}
const open = {path, opt; -> (syscall(Sysopen, cstring(path), a(opt)) : fd)}
const sleep = {msec; -> syscall(Syssleep, a(msec))}
const rfork = {rflags; -> (syscall(Sysrfork, a(rflags)) : pid)}
const pipe = {fds; -> syscall(Syspipe, a(fds))}
const create = {path, mode, perm; -> (syscall(Syscreate, cstring(path), a(mode), a(perm)) : fd)}
const fd2path = {fd, buf; -> syscall(Sysfd2path, a(fd), p(buf), a(buf.len))}
const remove = {path; -> syscall(Sysremove, cstring(path))}
const notify = {fn; -> syscall(Sysnotify, fn)} /* FIXME: this is likely to break when we do closures... */
const noted = {v; -> syscall(Sysnoted, a(v))}
const segattach = {attr, class, va, len; -> syscall(Syssegattach, a(attr), cstring(class), a(va), a(len))}
const segdetach = {va; -> syscall(Syssegdetach, a(va))}
const segfree = {va, len; -> syscall(Syssegfree, a(va), a(len))}
const segflush = {va, len; -> syscall(Syssegfree, a(va), a(len))}
const unmount = {name, old; -> syscall(Sysunmount, cstring(name), cstring(old))}
const _errstr = {buf; -> syscall(Syserrstr, p(buf), a(buf.len))}
const stat = {name, edir; -> syscall(Sysstat, cstring(name), p(edir), a(edir.len))}
const fstat = {fd, edir; -> syscall(Sysstat, a(fd), p(edir), a(edir.len))}
const wstat = {name, edir; -> syscall(Syswstat, cstring(name), p(edir), a(edir.len))}
const fwstat = {fd, edir; -> syscall(Sysfwstat, a(fd), p(edir), a(edir.len))}
const mount = {fd, afd, old, flag, aname; -> syscall(Sysmount, a(fd), a(afd), cstring(old), a(flag), cstring(aname))}
const pread = {fd, buf, off; -> (syscall(Syspread, a(fd), p(buf), a(buf.len), off) : size)}
const pwrite = {fd, buf, off; -> (syscall(Syspwrite, a(fd), p(buf), a(buf.len), s(off)) : size)}
const await = {buf; -> syscall(Sysawait, p(buf), a(buf.len))}
const brk_ = {endp; -> syscall(Sysbrk_, p(endp))}
const nsec = {; -> (syscall(Sys_nsec) : uint64)}
const seek = {fd, n, ty
var ret : off
syscall(Sysseek, a(&ret), a(fd), a(n), a(ty))
-> ret
}
const exec = {bin, args
var p, cargs, i
/* we need an array of C strings. */
p = alloca((args.len + 1)*sizeof(byte#))
cargs = (a(p) : byte##)[:args.len + 1]
for i = 0; i < args.len; i++
cargs[i] = cstring(args[i])
;;
cargs[args.len] = (0 : byte#)
-> syscall(Sysexec, cstring(bin), a(cargs))
}
const errstr = {eb
var tmp : byte[128]
var n
n = 128
if eb.len < tmp.len
n = eb.len
;;
_errstr(tmp[:])
for var i = 0; i < n; i++
eb[i] = tmp[i]
;;
_errstr(tmp[:])
-> 0
}
/*const fversion = {fd, bufsz, vers, nvers; -> syscall(Sysfversion, fd, bufsz, }*/
const semacquire = {addr, block; -> (syscall(Syssemacquire, a(addr), a(block)) : int)}
const tsemacquire = {addr, ms; -> (syscall(Systsemacquire, a(addr), a(ms)) : int)}
const semrelease = {addr, count; -> (syscall(Syssemrelease, a(addr), a(count)) : int32)}
const rendezvous = {tag, val; -> (syscall(Sysrendezvous, a(tag), a(val)) : void#)}