mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-10-31 16:11:33 +01:00
451 lines
8.6 KiB
ObjectPascal
451 lines
8.6 KiB
ObjectPascal
{
|
|
This file is part of the Free Pascal run time library.
|
|
Copyright (c) 1997-2004 by the Free Pascal development team
|
|
|
|
Some x86 specific stuff. Has to be fixed still for *BSD
|
|
|
|
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 x86;
|
|
|
|
interface
|
|
|
|
{$inline on}
|
|
|
|
Uses BaseUnix;
|
|
|
|
function ReadPortB (Port : Longint): Byte;inline;
|
|
function ReadPortW (Port : Longint): Word;inline;
|
|
function ReadPortL (Port : Longint): Longint;inline;
|
|
Procedure ReadPort (Port : Longint; Var Value : Byte);inline;
|
|
Procedure ReadPort (Port : Longint; Var Value : Longint);inline;
|
|
Procedure ReadPort (Port : Longint; Var Value : Word);inline;
|
|
Procedure ReadPortB (Port : Longint; Var Buf; Count: longint);
|
|
Procedure ReadPortL (Port : Longint; Var Buf; Count: longint);
|
|
Procedure ReadPortW (Port : Longint; Var Buf; Count: longint);
|
|
Procedure WritePort (Port : Longint; Value : Byte);inline;
|
|
Procedure WritePort (Port : Longint; Value : Longint);inline;
|
|
Procedure WritePort (Port : Longint; Value : Word);inline;
|
|
Procedure WritePortB (Port : Longint; Value : Byte);inline;
|
|
Procedure WritePortB (Port : Longint; Var Buf; Count: longint);
|
|
Procedure WritePortL (Port : Longint; Value : Longint);inline;
|
|
Procedure WritePortW (Port : Longint; Value : Word);inline;
|
|
Procedure WritePortW (Port : Longint; Var Buf; Count: longint);
|
|
Procedure WritePortl (Port : Longint; Var Buf; Count: longint);
|
|
|
|
Function fpIOperm (From,Num : Cardinal; Value : cint) : cint;
|
|
Function fpIoPL(Level : cint) : cint;
|
|
|
|
implementation
|
|
{$ASMMODE ATT}
|
|
|
|
Uses Syscall;
|
|
|
|
{$IFDEF cpullvm}
|
|
procedure fpc_x86_outportb(p:longint;v:byte);
|
|
begin
|
|
asm
|
|
movl %edx, p
|
|
movb v, %al
|
|
outb %al, %dx
|
|
end ['eax','edx'];
|
|
end;
|
|
|
|
procedure fpc_x86_outportw(p:longint;v:word);
|
|
begin
|
|
asm
|
|
movl %edx, p
|
|
movw v, %ax
|
|
outw %ax, %dx
|
|
end ['eax','edx'];
|
|
end;
|
|
|
|
procedure fpc_x86_outportl(p:longint;v:longint);
|
|
begin
|
|
asm
|
|
movl %edx, p
|
|
movl v, %eax
|
|
outl %eax, %dx
|
|
end ['eax','edx'];
|
|
end;
|
|
|
|
function fpc_x86_inportb(p:word):byte; assembler; nostackframe;
|
|
asm
|
|
xorl %eax, %eax
|
|
movw %dx, p
|
|
inb %dx, %al
|
|
end;
|
|
|
|
function fpc_x86_inportw(p:word):word; assembler; nostackframe;
|
|
asm
|
|
xorl %eax, %eax
|
|
movw %dx, p
|
|
inw %dx, %ax
|
|
end;
|
|
|
|
function fpc_x86_inportl(p:word):longint; assembler; nostackframe;
|
|
asm
|
|
movw %dx, p
|
|
inl %dx, %eax
|
|
end;
|
|
{$ENDIF ndef cpullvm}
|
|
|
|
Procedure WritePort (Port : Longint; Value : Byte);inline;
|
|
{
|
|
Writes 'Value' to port 'Port'
|
|
}
|
|
begin
|
|
fpc_x86_outportb(Port,Value);
|
|
end;
|
|
|
|
Procedure WritePort (Port : Longint; Value : Word);inline;
|
|
{
|
|
Writes 'Value' to port 'Port'
|
|
}
|
|
|
|
begin
|
|
fpc_x86_outportw(Port,Value);
|
|
end;
|
|
|
|
|
|
|
|
Procedure WritePort (Port : Longint; Value : Longint);inline;
|
|
{
|
|
Writes 'Value' to port 'Port'
|
|
}
|
|
begin
|
|
fpc_x86_outportl(Port,Value);
|
|
end;
|
|
|
|
|
|
Procedure WritePortB (Port : Longint; Value : Byte);inline;
|
|
{
|
|
Writes 'Value' to port 'Port'
|
|
}
|
|
begin
|
|
fpc_x86_outportb(Port,Value);
|
|
end;
|
|
|
|
Procedure WritePortW (Port : Longint; Value : Word);inline;
|
|
{
|
|
Writes 'Value' to port 'Port'
|
|
}
|
|
|
|
begin
|
|
fpc_x86_outportw(Port,Value);
|
|
end;
|
|
|
|
|
|
|
|
Procedure WritePortL (Port : Longint; Value : Longint);inline;
|
|
{
|
|
Writes 'Value' to port 'Port'
|
|
}
|
|
|
|
begin
|
|
fpc_x86_outportl(Port,Value);
|
|
end;
|
|
|
|
|
|
|
|
Procedure WritePortl (Port : Longint; Var Buf; Count: longint);
|
|
{
|
|
Writes 'Count' longints from 'Buf' to Port
|
|
}
|
|
begin
|
|
asm
|
|
{$ifdef CPU386}
|
|
movl count,%ecx
|
|
movl buf,%esi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
outsl
|
|
{$endif CPU386}
|
|
{$ifdef CPUX86_64}
|
|
movl count,%ecx
|
|
movq buf,%rsi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
outsl
|
|
{$endif CPUX86_64}
|
|
end;
|
|
end;
|
|
|
|
|
|
|
|
Procedure WritePortW (Port : Longint; Var Buf; Count: longint);
|
|
{
|
|
Writes 'Count' words from 'Buf' to Port
|
|
}
|
|
begin
|
|
asm
|
|
{$ifdef CPU386}
|
|
movl count,%ecx
|
|
movl buf,%esi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
outsw
|
|
{$endif CPU386}
|
|
{$ifdef CPUX86_64}
|
|
movl count,%ecx
|
|
movq buf,%rsi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
outsw
|
|
{$endif CPUX86_64}
|
|
end;
|
|
end;
|
|
|
|
|
|
|
|
Procedure WritePortB (Port : Longint; Var Buf; Count: longint);
|
|
{
|
|
Writes 'Count' bytes from 'Buf' to Port
|
|
}
|
|
begin
|
|
asm
|
|
{$ifdef CPU386}
|
|
movl count,%ecx
|
|
movl buf,%esi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
outsb
|
|
{$endif CPU386}
|
|
{$ifdef CPUX86_64}
|
|
movl count,%ecx
|
|
movq buf,%rsi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
outsb
|
|
{$endif CPUX86_64}
|
|
end;
|
|
end;
|
|
|
|
|
|
|
|
Procedure ReadPort (Port : Longint; Var Value : Byte);inline;
|
|
{
|
|
Reads 'Value' from port 'Port'
|
|
}
|
|
begin
|
|
Value:=fpc_x86_inportb(Port);
|
|
end;
|
|
|
|
|
|
|
|
Procedure ReadPort (Port : Longint; Var Value : Word);inline;
|
|
{
|
|
Reads 'Value' from port 'Port'
|
|
}
|
|
begin
|
|
Value:=fpc_x86_inportw(Port);
|
|
end;
|
|
|
|
|
|
|
|
Procedure ReadPort (Port : Longint; Var Value : Longint);inline;
|
|
{
|
|
Reads 'Value' from port 'Port'
|
|
}
|
|
begin
|
|
Value:=fpc_x86_inportl(Port);
|
|
end;
|
|
|
|
|
|
|
|
function ReadPortB (Port : Longint): Byte;inline;
|
|
{
|
|
Reads a byte from port 'Port'
|
|
}
|
|
begin
|
|
ReadPortB:=fpc_x86_inportb(Port);
|
|
end;
|
|
|
|
function ReadPortW (Port : Longint): Word;inline;
|
|
{
|
|
Reads a word from port 'Port'
|
|
}
|
|
begin
|
|
ReadPortW:=fpc_x86_inportw(Port);
|
|
end;
|
|
|
|
function ReadPortL (Port : Longint): LongInt;inline;
|
|
{
|
|
Reads a LongInt from port 'Port'
|
|
}
|
|
begin
|
|
ReadPortL:=fpc_x86_inportl(Port);
|
|
end;
|
|
|
|
Procedure ReadPortL (Port : Longint; Var Buf; Count: longint);
|
|
{
|
|
Reads 'Count' longints from port 'Port' to 'Buf'.
|
|
}
|
|
begin
|
|
asm
|
|
{$ifdef CPU386}
|
|
movl count,%ecx
|
|
movl buf,%edi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
insl
|
|
{$endif CPU386}
|
|
{$ifdef CPUX86_64}
|
|
movl count,%ecx
|
|
movq buf,%rdi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
insl
|
|
{$endif CPUX86_64}
|
|
end;
|
|
end;
|
|
|
|
|
|
|
|
Procedure ReadPortW (Port : Longint; Var Buf; Count: longint);
|
|
{
|
|
Reads 'Count' words from port 'Port' to 'Buf'.
|
|
}
|
|
begin
|
|
asm
|
|
{$ifdef CPU386}
|
|
movl count,%ecx
|
|
movl buf,%edi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
insw
|
|
{$endif CPU386}
|
|
{$ifdef CPUX86_64}
|
|
movl count,%ecx
|
|
movq buf,%rdi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
insw
|
|
{$endif CPUX86_64}
|
|
end;
|
|
end;
|
|
|
|
Procedure ReadPortB (Port : Longint; Var Buf; Count: longint);
|
|
{
|
|
Reads 'Count' bytes from port 'Port' to 'Buf'.
|
|
}
|
|
begin
|
|
asm
|
|
{$ifdef CPU386}
|
|
movl count,%ecx
|
|
movl buf,%edi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
insb
|
|
{$endif CPU386}
|
|
{$ifdef CPUX86_64}
|
|
movl count,%ecx
|
|
movq buf,%rdi
|
|
movl port,%edx
|
|
cld
|
|
rep
|
|
insb
|
|
{$endif CPUX86_64}
|
|
end;
|
|
end;
|
|
|
|
{$if defined(linux) or defined(android)}
|
|
Function fpIOperm (From,Num : Cardinal; Value : cint) : cint;
|
|
{
|
|
Set permissions on NUM ports starting with port FROM to VALUE
|
|
this works ONLY as root.
|
|
}
|
|
|
|
begin
|
|
fpIOPerm:=do_Syscall(Syscall_nr_ioperm,TSysParam(From),TSysParam(Num),TSysParam(Value));
|
|
end;
|
|
{$else}
|
|
|
|
|
|
{$packrecords C}
|
|
|
|
TYPE uint=CARDINAL;
|
|
|
|
CONST
|
|
I386_GET_LDT =0;
|
|
I386_SET_LDT =1;
|
|
{ I386_IOPL }
|
|
I386_GET_IOPERM =3;
|
|
I386_SET_IOPERM =4;
|
|
{ xxxxx }
|
|
I386_VM86 =6;
|
|
|
|
|
|
type
|
|
|
|
{ i386_ldt_args = record
|
|
int start : longint;
|
|
union descriptor *descs;
|
|
int num;
|
|
end;
|
|
}
|
|
|
|
i386_ioperm_args = record
|
|
start : cuint;
|
|
length : cuint;
|
|
enable : cint;
|
|
end;
|
|
|
|
|
|
i386_vm86_args = record
|
|
sub_op : cint; { sub-operation to perform }
|
|
sub_args : PAnsiChar; { args }
|
|
end;
|
|
|
|
sysarch_args = record
|
|
op : longint;
|
|
parms : PAnsiChar;
|
|
end;
|
|
|
|
Function fpIOPerm(From,Num:CARDINAL;Value:cint):cint;
|
|
|
|
var sg : i386_ioperm_args;
|
|
sa : sysarch_args;
|
|
|
|
begin
|
|
sg.start:=From;
|
|
sg.length:=Num;
|
|
sg.enable:=value;
|
|
sa.op:=i386_SET_IOPERM;
|
|
sa.parms:=@sg;
|
|
fpIOPerm:=do_syscall(syscall_nr_sysarch,TSysParam(@sa));
|
|
end;
|
|
{$endif}
|
|
|
|
Function fpIoPL(Level : cint) : cint;
|
|
|
|
begin
|
|
{$ifdef Linux}
|
|
fpIOPL:=do_Syscall(Syscall_nr_iopl,TSysParam(Level));
|
|
{$else}
|
|
fpIOPL:=-1;
|
|
FpSetErrNo(ESysENoSys);
|
|
{$endif}
|
|
end;
|
|
|
|
|
|
end.
|