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5cbe12c622
fpc/rtl/linux/linux.pp
Jonas Maebe d8032f6366 - disabled modify_ldt for non-x86 platforms, since it does not exist there 
(mantis #17100)
  * also use a syscall to call modify_ldt when FPC_USE_LIBC is defined,
    because it's not exported as a function from libc

git-svn-id: trunk@15838 -
2010-08-17 21:34:09 +00:00

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{
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2000 by Michael Van Canneyt,
BSD parts (c) 2000 by Marco van de Voort
members of the Free Pascal development team.
New linux unit. Linux only calls only. Will be renamed to linux.pp
when 1.0.x support is killed off.
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY;without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
unit Linux;
{$packrecords c}
interface
uses
BaseUnix, unixtype;
type
TSysInfo = record
uptime: clong; //* Seconds since boot */
loads: array[0..2] of culong; //* 1, 5, and 15 minute load averages */
totalram: culong; //* Total usable main memory size */
freeram: culong; //* Available memory size */
sharedram: culong; //* Amount of shared memory */
bufferram: culong; //* Memory used by buffers */
totalswap: culong; //* Total swap space size */
freeswap: culong; //* swap space still available */
procs: cushort; //* Number of current processes */
pad: cushort; //* explicit padding for m68k */
totalhigh: culong; //* Total high memory size */
freehigh: culong; //* Available high memory size */
mem_unit: cuint; //* Memory unit size in bytes */
{$ifndef cpu64}
{ the upper bound of the array below is negative for 64 bit cpus }
_f: array[0..19-2*sizeof(clong)-sizeof(cint)] of cChar; //* Padding: libc5 uses this.. */
{$endif cpu64}
end;
PSysInfo = ^TSysInfo;
function Sysinfo(Info: PSysinfo): cInt; {$ifdef FPC_USE_LIBC} cdecl; external name 'sysinfo'; {$endif}
const
CSIGNAL = $000000ff; // signal mask to be sent at exit
CLONE_VM = $00000100; // set if VM shared between processes
CLONE_FS = $00000200; // set if fs info shared between processes
CLONE_FILES = $00000400; // set if open files shared between processes
CLONE_SIGHAND = $00000800; // set if signal handlers shared
CLONE_PID = $00001000; // set if pid shared
CLONE_PTRACE = $00002000; // Set if tracing continues on the child.
CLONE_VFORK = $00004000; // Set if the parent wants the child to wake it up on mm_release.
CLONE_PARENT = $00008000; // Set if we want to have the same parent as the cloner.
CLONE_THREAD = $00010000; // Set to add to same thread group.
CLONE_NEWNS = $00020000; // Set to create new namespace.
CLONE_SYSVSEM = $00040000; // Set to shared SVID SEM_UNDO semantics.
CLONE_SETTLS = $00080000; // Set TLS info.
CLONE_PARENT_SETTID = $00100000; // Store TID in userlevel buffer before MM copy.
CLONE_CHILD_CLEARTID = $00200000; // Register exit futex and memory location to clear.
CLONE_DETACHED = $00400000; // Create clone detached.
CLONE_UNTRACED = $00800000; // Set if the tracing process can't force CLONE_PTRACE on this clone.
CLONE_CHILD_SETTID = $01000000; // Store TID in userlevel buffer in the child.
CLONE_STOPPED = $02000000; // Start in stopped state.
FUTEX_WAIT = 0;
FUTEX_WAKE = 1;
FUTEX_FD = 2;
FUTEX_REQUEUE = 3;
FUTEX_CMP_REQUEUE = 4;
FUTEX_WAKE_OP = 5;
FUTEX_LOCK_PI = 6;
FUTEX_UNLOCK_PI = 7;
FUTEX_TRYLOCK_PI = 8;
FUTEX_OP_SET = 0; // *(int *)UADDR2 = OPARG;
FUTEX_OP_ADD = 1; // *(int *)UADDR2 += OPARG;
FUTEX_OP_OR = 2; // *(int *)UADDR2 |= OPARG;
FUTEX_OP_ANDN = 3; // *(int *)UADDR2 &= ~OPARG;
FUTEX_OP_XOR = 4; // *(int *)UADDR2 ^= OPARG;
FUTEX_OP_OPARG_SHIFT = 8; // Use (1 << OPARG) instead of OPARG.
FUTEX_OP_CMP_EQ = 0; // if (oldval == CMPARG) wake
FUTEX_OP_CMP_NE = 1; // if (oldval != CMPARG) wake
FUTEX_OP_CMP_LT = 2; // if (oldval < CMPARG) wake
FUTEX_OP_CMP_LE = 3; // if (oldval <= CMPARG) wake
FUTEX_OP_CMP_GT = 4; // if (oldval > CMPARG) wake
FUTEX_OP_CMP_GE = 5; // if (oldval >= CMPARG) wake
{ FUTEX_WAKE_OP will perform atomically
int oldval = *(int *)UADDR2;
*(int *)UADDR2 = oldval OP OPARG;
if (oldval CMP CMPARG)
wake UADDR2; }
{$ifndef FPC_USE_LIBC}
function futex(uaddr:Pcint;op,val:cint;timeout:Ptimespec;addr2:Pcint;val3:cint):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
function futex(var uaddr;op,val:cint;timeout:Ptimespec;var addr2;val3:cint):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
function futex(var uaddr;op,val:cint;var timeout:Ttimespec;var addr2;val3:cint):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
{$else}
function futex(uaddr:Pcint;op,val:cint;timeout:Ptimespec;addr2:Pcint;val3:cint):cint; cdecl; external name 'futex';
function futex(var uaddr;op,val:cint;timeout:Ptimespec;var addr2;val3:cint):cint; cdecl; external name 'futex';
function futex(var uaddr;op,val:cint;var timeout:Ttimespec;var addr2;val3:cint):cint; cdecl; external name 'futex';
{$endif}
function futex(uaddr:Pcint;op,val:cint;timeout:Ptimespec):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
function futex(var uaddr;op,val:cint;timeout:Ptimespec):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
function futex(var uaddr;op,val:cint;var timeout:Ttimespec):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
{$ifndef FPC_USE_LIBC}
function futex_op(op, oparg, cmp, cmparg: cint): cint; {$ifdef SYSTEMINLINE}inline;{$endif}
{$endif}
const
POLLMSG = $0400;
POLLREMOVE = $1000;
POLLRDHUP = $2000;
EPOLLIN = $01; { The associated file is available for read(2) operations. }
EPOLLPRI = $02; { There is urgent data available for read(2) operations. }
EPOLLOUT = $04; { The associated file is available for write(2) operations. }
EPOLLERR = $08; { Error condition happened on the associated file descriptor. }
EPOLLHUP = $10; { Hang up happened on the associated file descriptor. }
EPOLLONESHOT = $40000000; { Sets the One-Shot behaviour for the associated file descriptor. }
EPOLLET = $80000000; { Sets the Edge Triggered behaviour for the associated file descriptor. }
{ Valid opcodes ( "op" parameter ) to issue to epoll_ctl }
EPOLL_CTL_ADD = 1;
EPOLL_CTL_DEL = 2;
EPOLL_CTL_MOD = 3;
{Some console iotcl's.}
GIO_FONT = $4B60; {gets font in expanded form}
PIO_FONT = $4B61; {use font in expanded form}
GIO_FONTX = $4B6B; {get font using struct consolefontdesc}
PIO_FONTX = $4B6C; {set font using struct consolefontdesc}
PIO_FONTRESET = $4B6D; {reset to default font}
GIO_CMAP = $4B70; {gets colour palette on VGA+}
PIO_CMAP = $4B71; {sets colour palette on VGA+}
KIOCSOUND = $4B2F; {start sound generation (0 for off)}
KDMKTONE = $4B30; {generate tone}
KDGETLED = $4B31; {return current led state}
KDSETLED = $4B32; {set led state [lights, not flags]}
KDGKBTYPE = $4B33; {get keyboard type}
KDADDIO = $4B34; {add i/o port as valid}
KDDELIO = $4B35; {del i/o port as valid}
KDENABIO = $4B36; {enable i/o to video board}
KDDISABIO = $4B37; {disable i/o to video board}
KDSETMODE = $4B3A; {set text/graphics mode}
KDGETMODE = $4B3B; {get current mode}
KDMAPDISP = $4B3C; {map display into address space}
KDUNMAPDISP = $4B3D; {unmap display from address space}
GIO_SCRNMAP = $4B40; {get screen mapping from kernel}
PIO_SCRNMAP = $4B41; {put screen mapping table in kernel}
GIO_UNISCRNMAP = $4B69; {get full Unicode screen mapping}
PIO_UNISCRNMAP = $4B6A; {set full Unicode screen mapping}
GIO_UNIMAP = $4B66; {get unicode-to-font mapping from kernel}
PIO_UNIMAP = $4B67; {put unicode-to-font mapping in kernel}
PIO_UNIMAPCLR = $4B68; {clear table, possibly advise hash algorithm}
KDGKBDIACR = $4B4A; {read kernel accent table}
KDSKBDIACR = $4B4B; {write kernel accent table}
KDGETKEYCODE = $4B4C; {read kernel keycode table entry}
KDSETKEYCODE = $4B4D; {write kernel keycode table entry}
KDSIGACCEPT = $4B4E; {accept kbd generated signals}
KDFONTOP = $4B72; {font operations}
{Keyboard types (for KDGKBTYPE)}
KB_84 = 1;
KB_101 = 2; {Normal PC keyboard.}
KB_OTHER = 3;
{Keyboard LED constants.}
LED_SCR = 1; {scroll lock led}
LED_NUM = 2; {num lock led}
LED_CAP = 4; {caps lock led}
{Tty modes. (for KDSETMODE)}
KD_TEXT = 0;
KD_GRAPHICS = 1;
KD_TEXT0 = 2; {obsolete}
KD_TEXT1 = 3; {obsolete}
MAP_GROWSDOWN = $100; { stack-like segment }
MAP_DENYWRITE = $800; { ETXTBSY }
MAP_EXECUTABLE = $1000; { mark it as an executable }
MAP_LOCKED = $2000; { pages are locked }
MAP_NORESERVE = $4000; { don't check for reservations }
type
TCloneFunc = function(args:pointer):longint;cdecl;
{$ifdef cpui386}
{$define clone_implemented}
{$endif}
{$ifdef clone_implemented}
function clone(func:TCloneFunc;sp:pointer;flags:longint;args:pointer):longint; {$ifdef FPC_USE_LIBC} cdecl; external name 'clone'; {$endif}
{$endif}
{$if defined(cpui386) or defined(cpux86_64)}
const
MODIFY_LDT_CONTENTS_DATA = 0;
MODIFY_LDT_CONTENTS_STACK = 1;
MODIFY_LDT_CONTENTS_CODE = 2;
{ Flags for user_desc.flags }
UD_SEG_32BIT = $01;
UD_CONTENTS_DATA = MODIFY_LDT_CONTENTS_DATA shl 1;
UD_CONTENTS_STACK = MODIFY_LDT_CONTENTS_STACK shl 1;
UD_CONTENTS_CODE = MODIFY_LDT_CONTENTS_CODE shl 1;
UD_READ_EXEC_ONLY = $08;
UD_LIMIT_IN_PAGES = $10;
UD_SEG_NOT_PRESENT = $20;
UD_USEABLE = $40;
UD_LM = $80;
type
user_desc = packed record
entry_number : cint;
base_addr : cuint;
limit : cuint;
flags : cuint;
end;
TUser_Desc = user_desc;
PUser_Desc = ^user_desc;
function modify_ldt(func:cint;p:pointer;bytecount:culong):cint;
{$endif cpui386 or cpux86_64}
procedure sched_yield; {$ifdef FPC_USE_LIBC} cdecl; external name 'sched_yield'; {$endif}
type
EPoll_Data = record
case integer of
0: (ptr: pointer);
1: (fd: cint);
2: (u32: cuint);
3: (u64: cuint64);
end;
TEPoll_Data = Epoll_Data;
PEPoll_Data = ^Epoll_Data;
EPoll_Event = {$ifdef cpu64} packed {$endif} record
Events: cuint32;
Data : TEpoll_Data;
end;
TEPoll_Event = Epoll_Event;
PEpoll_Event = ^Epoll_Event;
{ open an epoll file descriptor }
function epoll_create(size: cint): cint; {$ifdef FPC_USE_LIBC} cdecl; external name 'epoll_create'; {$endif}
{ control interface for an epoll descriptor }
function epoll_ctl(epfd, op, fd: cint; event: pepoll_event): cint; {$ifdef FPC_USE_LIBC} cdecl; external name 'epoll_ctl'; {$endif}
{ wait for an I/O event on an epoll file descriptor }
function epoll_wait(epfd: cint; events: pepoll_event; maxevents, timeout: cint): cint; {$ifdef FPC_USE_LIBC} cdecl; external name 'epoll_wait'; {$endif}
type Puser_cap_header=^user_cap_header;
user_cap_header=packed record
version,pid:cardinal;
end;
Puser_cap_data=^user_cap_data;
user_cap_data=packed record
effective,permitted,inheritable:cardinal;
end;
{Get a capability.}
function capget(header:Puser_cap_header;data:Puser_cap_data):cint;{$ifdef FPC_USE_LIBC} cdecl; external name 'capget'; {$endif}
{Set a capability.}
function capset(header:Puser_cap_header;data:Puser_cap_data):cint;{$ifdef FPC_USE_LIBC} cdecl; external name 'capset'; {$endif}
const CAP_CHOWN = 0;
CAP_DAC_OVERRIDE = 1;
CAP_DAC_READ_SEARCH = 2;
CAP_FOWNER = 3;
CAP_FSETID = 4;
CAP_FS_MASK = $1f;
CAP_KILL = 5;
CAP_SETGID = 6;
CAP_SETUID = 7;
CAP_SETPCAP = 8;
CAP_LINUX_IMMUTABLE = 9;
CAP_NET_BIND_SERVICE = 10;
CAP_NET_BROADCAST = 11;
CAP_NET_ADMIN = 12;
CAP_NET_RAW = 13;
CAP_IPC_LOCK = 14;
CAP_IPC_OWNER = 15;
CAP_SYS_MODULE = 16;
CAP_SYS_RAWIO = 17;
CAP_SYS_CHROOT = 18;
CAP_SYS_PTRACE = 19;
CAP_SYS_PACCT = 20;
CAP_SYS_ADMIN = 21;
CAP_SYS_BOOT = 22;
CAP_SYS_NICE = 23;
CAP_SYS_RESOURCE = 24;
CAP_SYS_TIME = 25;
CAP_SYS_TTY_CONFIG = 26;
CAP_MKNOD = 27;
CAP_LEASE = 28;
CAP_AUDIT_WRITE = 29;
CAP_AUDIT_CONTROL = 30;
LINUX_CAPABILITY_VERSION = $19980330;
//***********************************************SPLICE from kernel 2.6.17+****************************************
const
{* Flags for SPLICE and VMSPLICE. *}
SPLICE_F_MOVE = 1; { Move pages instead of copying. }
SPLICE_F_NONBLOCK = 2; {* Don't block on the pipe splicing
(but we may still block on the fd
we splice from/to). *}
SPLICE_F_MORE = 4; {* Expect more data. *}
SPLICE_F_GIFT = 8; {* Pages passed in are a gift. *}
{$ifdef cpu86}
{* Splice address range into a pipe. *}
function vmsplice (fdout: cInt; iov: PIOVec; count: size_t; flags: cuInt): cInt; {$ifdef FPC_USE_LIBC} cdecl; external name 'vmsplice'; {$ENDIF}
{* Splice two files together. *}
function splice (fdin: cInt; offin: off64_t; fdout: cInt;
offout: off64_t; len: size_t; flags: cuInt): cInt; {$ifdef FPC_USE_LIBC} cdecl; external name 'splice'; {$ENDIF}
function tee(fd_in: cInt; fd_out: cInt; len: size_t; flags: cuInt): cInt; {$ifdef FPC_USE_LIBC} cdecl; external name 'tee'; {$ENDIF}
{$endif} // x86
const
{ flags for sync_file_range }
SYNC_FILE_RANGE_WAIT_BEFORE = 1;
SYNC_FILE_RANGE_WRITE = 2;
SYNC_FILE_RANGE_WAIT_AFTER = 4;
function sync_file_range(fd: cInt; offset, nbytes: off64_t; flags: cuInt): cInt; {$ifdef FPC_USE_LIBC} cdecl; external name 'sync_file_range'; {$ENDIF}
function fdatasync (fd: cint): cint; {$ifdef FPC_USE_LIBC} cdecl; external name 'sync_file_range'; {$ENDIF}
implementation
{$if not defined(FPC_USE_LIBC) or defined(cpui386) or defined(cpux86_64)}
{ needed for modify_ldt on x86 }
Uses Syscall;
{$endif not defined(FPC_USE_LIBC) or defined(cpui386) or defined(cpux86_64)}
{$ifndef FPC_USE_LIBC}
function Sysinfo(Info: PSysinfo): cInt;
begin
Sysinfo := do_SysCall(SysCall_nr_Sysinfo, TSysParam(info));
end;
{$ifdef clone_implemented}
function clone(func:TCloneFunc;sp:pointer;flags:longint;args:pointer):longint;
begin
if (pointer(func)=nil) or (sp=nil) then
exit(-1); // give an error result
{$ifdef cpui386}
{$ASMMODE ATT}
asm
{ Insert the argument onto the new stack. }
movl sp,%ecx
subl $8,%ecx
movl args,%eax
movl %eax,4(%ecx)
{ Save the function pointer as the zeroth argument.
It will be popped off in the child in the ebx frobbing below. }
movl func,%eax
movl %eax,0(%ecx)
{ Do the system call }
pushl %ebx
movl flags,%ebx
movl syscall_nr_clone,%eax
int $0x80
popl %ebx
test %eax,%eax
jnz .Lclone_end
{ We're in the new thread }
subl %ebp,%ebp { terminate the stack frame }
call *%ebx
{ exit process }
movl %eax,%ebx
movl syscall_nr_exit,%eax
int $0x80
.Lclone_end:
movl %eax,__RESULT
end;
{$endif cpui386}
end;
{$endif}
procedure sched_yield;
begin
do_syscall(syscall_nr_sched_yield);
end;
function epoll_create(size: cint): cint;
begin
epoll_create := do_syscall(syscall_nr_epoll_create,tsysparam(size));
end;
function epoll_ctl(epfd, op, fd: cint; event: pepoll_event): cint;
begin
epoll_ctl := do_syscall(syscall_nr_epoll_ctl, tsysparam(epfd),
tsysparam(op), tsysparam(fd), tsysparam(event));
end;
function epoll_wait(epfd: cint; events: pepoll_event; maxevents, timeout: cint): cint;
begin
epoll_wait := do_syscall(syscall_nr_epoll_wait, tsysparam(epfd),
tsysparam(events), tsysparam(maxevents), tsysparam(timeout));
end;
function capget(header:Puser_cap_header;data:Puser_cap_data):cint;
begin
capget:=do_syscall(syscall_nr_capget,Tsysparam(header),Tsysparam(data));
end;
function capset(header:Puser_cap_header;data:Puser_cap_data):cint;
begin
capset:=do_syscall(syscall_nr_capset,Tsysparam(header),Tsysparam(data));
end;
// TODO: update also on non x86!
{$ifdef cpu86} // didn't update syscall_nr on others yet
function vmsplice (fdout: cInt; iov: PIOVec; count: size_t; flags: cuInt): cInt;
begin
vmsplice := do_syscall(syscall_nr_vmsplice, TSysParam(fdout), TSysParam(iov),
TSysParam(count), TSysParam(flags));
end;
function splice (fdin: cInt; offin: off64_t; fdout: cInt; offout: off64_t; len: size_t; flags: cuInt): cInt;
begin
splice := do_syscall(syscall_nr_splice, TSysParam(fdin), TSysParam(@offin),
TSysParam(fdout), TSysParam(@offout), TSysParam(len), TSysParam(flags));
end;
function tee(fd_in: cInt; fd_out: cInt; len: size_t; flags: cuInt): cInt;
begin
tee := do_syscall(syscall_nr_tee, TSysParam(fd_in), TSysParam(fd_out),
TSysParam(len), TSysParam(flags));
end;
{$endif} // x86
function sync_file_range(fd: cInt; offset: off64_t; nbytes: off64_t; flags: cuInt): cInt;
begin
{$if defined(cpupowerpc) or defined(cpuarm)}
sync_file_range := do_syscall(syscall_nr_sync_file_range2, TSysParam(fd), TSysParam(flags),
TSysParam(hi(offset)), TSysParam(lo(offset)), TSysParam(hi(nbytes)), TSysParam(lo(nbytes)));
{$else}
{$if defined(cpupowerpc64)}
sync_file_range := do_syscall(syscall_nr_sync_file_range2, TSysParam(fd), TSysParam(flags),
TSysParam(offset), TSysParam(nbytes));
{$else}
{$ifdef cpu64}
sync_file_range := do_syscall(syscall_nr_sync_file_range, TSysParam(fd), TSysParam(offset),
TSysParam(nbytes), TSysParam(flags));
{$else}
sync_file_range := do_syscall(syscall_nr_sync_file_range, TSysParam(fd), TSysParam(lo(offset)),
TSysParam(hi(offset)), TSysParam(lo(nbytes)), TSysParam(hi(nbytes)), TSysParam(flags));
{$endif}
{$endif}
{$endif}
end;
function fdatasync (fd: cint): cint;
begin
fdatasync:=do_SysCall(syscall_nr_fdatasync, fd);
end;
function futex(uaddr:Pcint;op,val:cint;timeout:Ptimespec;addr2:Pcint;val3:cint):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
futex:=do_syscall(syscall_nr_futex,Tsysparam(uaddr),Tsysparam(op),Tsysparam(val),Tsysparam(timeout),
Tsysparam(addr2),Tsysparam(val3));
end;
function futex(var uaddr;op,val:cint;timeout:Ptimespec;var addr2;val3:cint):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
futex:=do_syscall(syscall_nr_futex,Tsysparam(@uaddr),Tsysparam(op),Tsysparam(val),Tsysparam(timeout),
Tsysparam(@addr2),Tsysparam(val3));
end;
function futex(var uaddr;op,val:cint;var timeout:Ttimespec;var addr2;val3:cint):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
futex:=do_syscall(syscall_nr_futex,Tsysparam(@uaddr),Tsysparam(op),Tsysparam(val),Tsysparam(@timeout),
Tsysparam(@addr2),Tsysparam(val3));
end;
function futex(uaddr:Pcint;op,val:cint;timeout:Ptimespec):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
futex:=do_syscall(syscall_nr_futex,Tsysparam(uaddr),Tsysparam(op),Tsysparam(val),Tsysparam(timeout));
end;
function futex(var uaddr;op,val:cint;timeout:Ptimespec):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
futex:=do_syscall(syscall_nr_futex,Tsysparam(@uaddr),Tsysparam(op),Tsysparam(val),Tsysparam(timeout));
end;
function futex(var uaddr;op,val:cint;var timeout:Ttimespec):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
futex:=do_syscall(syscall_nr_futex,Tsysparam(@uaddr),Tsysparam(op),Tsysparam(val),Tsysparam(@timeout));
end;
{$else}
{Libc case.}
function futex(uaddr:Pcint;op,val:cint;timeout:Ptimespec):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
futex:=futex(uaddr,op,val,nil,nil,0);
end;
function futex(var uaddr;op,val:cint;timeout:Ptimespec):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
futex:=futex(@uaddr,op,val,nil,nil,0);
end;
function futex(var uaddr;op,val:cint;var timeout:Ttimespec):cint;{$ifdef SYSTEMINLINE}inline;{$endif}
begin
futex:=futex(@uaddr,op,val,@timeout,nil,0);
end;
{$endif} // non-libc
{$if defined(cpui386) or defined(cpux86_64)}
{ does not exist as a wrapper in glibc, and exists only for x86 }
function modify_ldt(func:cint;p:pointer;bytecount:culong):cint;
begin
modify_ldt:=do_syscall(syscall_nr_modify_ldt,Tsysparam(func),
Tsysparam(p),
Tsysparam(bytecount));
end;
{$endif}
{ FUTEX_OP is a macro, doesn't exist in libC as function}
function FUTEX_OP(op, oparg, cmp, cmparg: cint): cint; {$ifdef SYSTEMINLINE}inline;{$endif}
begin
FUTEX_OP := ((op and $F) shl 28) or ((cmp and $F) shl 24) or ((oparg and $FFF) shl 12) or (cmparg and $FFF);
end;
end.
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