* Initial version. Needs check for OpenBSD.

rtl/bsd/i386/syscall.inc

@@ -0,0 +1,188 @@
+{
+    $Id$
+    Copyright (c) 2002 by Marco van de Voort
+
+    Syscall functions for i386 *BSD.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    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.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ ****************************************************************************
+
+These functions are the same over all three BSDs, except that some have a 
+32-bit Errno, and some a 16-bit}
+
+{$ifdef NetBSD}
+ {$UNDEF ErrnoWord}
+{$endif}
+{$ifdef FreeBSD}
+ {$DEFINE ErrnoWord}
+{$endif}
+
+procedure actualsyscall; assembler; {inline requires a dummy push IIRC}
+    asm
+         int $0x80
+         jb .LErrorcode
+         xor %ebx,%ebx
+         ret
+.LErrorcode:
+	 mov %eax,%ebx
+         mov $-1,%eax
+   end;
+
+function Do_SysCall(sysnr:LONGINT):longint; assembler;
+
+asm
+  movl  sysnr,%eax
+  call  actualsyscall
+{$ifdef ErrnoWord}
+  movw  %bx,Errno
+{$else}
+  movl %ebx,Errno
+{$endif}
+end;
+
+function Do_SysCall(sysnr,param1:longint):longint; assembler;
+
+ asm
+  movl  sysnr,%eax
+  pushl Param1
+  call  actualsyscall
+  addl  $4,%esp
+{$ifdef ErrnoWord}
+  movw  %bx,Errno
+{$else}
+  movl %ebx,Errno
+{$endif}
+ end;
+
+function Do_SysCall(sysnr,param1:integer):longint; assembler;
+
+ asm
+  movl  sysnr,%eax
+  pushw Param1
+  call  actualsyscall
+  add   $2,%esp
+{$ifdef ErrnoWord}
+  movw  %bx,Errno
+{$else}
+  movl %ebx,Errno
+{$endif}
+ end;
+
+function Do_SysCall(sysnr,param1,param2:LONGINT):longint; assembler;
+
+ asm
+   movl  sysnr,%eax
+   pushl param2
+   pushl Param1
+   call  actualsyscall
+   addl  $8,%esp
+{$ifdef ErrnoWord}
+  movw  %bx,Errno
+{$else}
+  movl %ebx,Errno
+{$endif}
+ end;
+
+function Do_SysCall(sysnr,param1,param2,param3:LONGINT):longint; assembler;
+
+ asm
+   movl  sysnr,%eax
+   pushl param3
+   pushl param2
+   pushl Param1
+   call  actualsyscall
+   addl  $12,%esp
+{$ifdef ErrnoWord}
+  movw  %bx,Errno
+{$else}
+  movl %ebx,Errno
+{$endif}
+end;
+
+function Do_SysCall(sysnr,param1,param2,param3,param4:LONGINT):longint; assembler;
+
+asm
+   movl  sysnr,%eax
+   pushl param4
+   pushl param3
+   pushl param2
+   pushl Param1
+   call  actualsyscall
+   addl  $16,%esp
+{$ifdef ErrnoWord}
+  movw  %bx,Errno
+{$else}
+  movl %ebx,Errno
+{$endif}
+end;
+
+
+function Do_SysCall(sysnr,param1,param2,param3,param4,param5:LONGINT):longint;  assembler;
+
+ asm
+   movl  sysnr,%eax
+   pushl param5
+   pushl param4
+   pushl param3
+   pushl param2
+   pushl Param1
+   call  actualsyscall
+   addl  $20,%esp
+{$ifdef ErrnoWord}
+  movw  %bx,Errno
+{$else}
+  movl %ebx,Errno
+{$endif}
+end;
+
+function Do_SysCall(sysnr,param1,param2,param3,param4,param5,param6:LONGINT):longint;  assembler;
+
+asm
+   movl  sysnr,%eax
+   pushl param6
+   pushl param5
+   pushl param4
+   pushl param3
+   pushl param2
+   pushl Param1
+   call  actualsyscall
+   addl  $24,%esp
+{$ifdef ErrnoWord}
+  movw  %bx,Errno
+{$else}
+  movl %ebx,Errno
+{$endif}
+end;
+
+function Do_SysCall(sysnr,param1,param2,param3,param4,param5,param6,param7:LONGINT):longint;  assembler;
+
+asm
+   movl  sysnr,%eax
+   pushl param7
+   pushl param6
+   pushl param5
+   pushl param4
+   pushl param3
+   pushl param2
+   pushl Param1
+   call  actualsyscall
+   addl  $28,%esp
+{$ifdef ErrnoWord}
+  movw  %bx,Errno
+{$else}
+  movl %ebx,Errno
+{$endif}
+end;