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{
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}
{$ifdef FPC_USE_SYSCALL}
{$ifdef NetBSD}
{$UNDEF ErrnoWord}
{$endif}
{$ifdef FreeBSD}
{$DEFINE ErrnoWord}
{$endif}
Procedure fpc_geteipasebx;[external name 'fpc_geteipasebx'];
procedure actualsyscall; assembler; {inline requires a dummy push IIRC}
asm
int $0x80
jb .LErrorcode
ret
.LErrorcode:
{$ifdef FPC_PIC}
call fpc_geteipasebx
addl $_GLOBAL_OFFSET_TABLE_,%ebx
movl fpc_threadvar_relocate_proc@GOT(%ebx),%ecx
movl (%ecx),%ecx
movl Errno@GOT(%ebx),%edi
{$else FPC_PIC}
leal Errno,%edi
movl fpc_threadvar_relocate_proc,%ecx
{$endif FPC_PIC}
testl %ecx,%ecx
jne .LThread
{$ifdef ErrnoWord}
movw %ax,4(%edi)
{$else}
movl %eax,4(%edi)
{$endif}
jmp .LNoThread
.LThread:
movl %eax,%ebx
movl (%edi),%eax
call *%ecx
{$ifdef ErrnoWord}
movw %bx,4(%eax)
{$else}
movl %ebx,4(%eax)
{$endif}
.LNoThread:
movl $-1,%eax
end;
function FpSysCall(sysnr:TSysParam):TSysResult; oldfpccall; assembler; [public,alias:'FPC_DOSYS0'];
asm
movl sysnr,%eax
call actualsyscall
end;
function FpSysCall(sysnr,param1:TSysParam):TSysResult; oldfpccall; assembler;[public,alias:'FPC_DOSYS1'];
asm
movl sysnr,%eax
pushl Param1
call actualsyscall
addl $4,%esp
end;
function FpSysCall(sysnr,param1:integer):TSysResult; oldfpccall;assembler;[public,alias:'FPC_DOSYS1w'];
asm
movswl sysnr,%eax
pushw Param1
call actualsyscall
add $2,%esp
end;
function FpSysCall(sysnr,param1,param2:TSysParam):TSysResult; oldfpccall;assembler; [public,alias:'FPC_DOSYS2'];
asm
movl sysnr,%eax
pushl param2
pushl Param1
call actualsyscall
addl $8,%esp
end;
function FpSysCall(sysnr,param1,param2,param3:TSysParam):TSysResult; oldfpccall;assembler;[public,alias:'FPC_DOSYS3'];
asm
movl sysnr,%eax
pushl param3
pushl param2
pushl Param1
call actualsyscall
addl $12,%esp
end;
function FpSysCall(sysnr,param1,param2,param3,param4:TSysParam):TSysResult;oldfpccall; assembler;[public,alias:'FPC_DOSYS4'];
asm
movl sysnr,%eax
pushl param4
pushl param3
pushl param2
pushl Param1
call actualsyscall
addl $16,%esp
end;
function FpSysCall(sysnr,param1,param2,param3,param4,param5:TSysParam):TSysResult;oldfpccall; assembler;[public,alias:'FPC_DOSYS5'];
asm
movl sysnr,%eax
pushl param5
pushl param4
pushl param3
pushl param2
pushl Param1
call actualsyscall
addl $20,%esp
end;
function FpSysCall(sysnr,param1,param2,param3,param4,param5,param6:TSysParam):int64; oldfpccall; assembler;[public,alias:'FPC_DOSYS6'];
asm
movl sysnr,%eax
pushl param6
pushl param5
pushl param4
pushl param3
pushl param2
pushl Param1
call actualsyscall
addl $24,%esp
end;
function FpSysCall(sysnr,param1,param2,param3,param4,param5,param6,param7:TSysParam):int64;oldfpccall; assembler; [public,alias:'FPC_DOSYS7'];
asm
movl sysnr,%eax
pushl param7
pushl param6
pushl param5
pushl param4
pushl param3
pushl param2
pushl Param1
call actualsyscall
addl $28,%esp
end;
function FpSysCall(sysnr,param1,param2,param3,param4,param5,param6,param7,param8:TSysParam):int64;oldfpccall; assembler; [public,alias:'FPC_DOSYS8'];
asm
movl sysnr,%eax
pushl param8
pushl param7
pushl param6
pushl param5
pushl param4
pushl param3
pushl param2
pushl Param1
call actualsyscall
addl $32,%esp
end;
{$endif}
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