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@@ -15,7 +15,9 @@
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unit go32;
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+{$ifdef SUPPORT_PORTS}
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{$Mode ObjFpc}
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+{$endif SUPPORT_PORTS}
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{$S-,R-,I-,Q-} {no stack check, used by DPMIEXCP !! }
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interface
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@@ -173,6 +175,7 @@ interface
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procedure dpmi_dosmemfillword(seg,ofs : word;count : longint;w : word);
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+{$ifdef SUPPORT_PORTS}
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type
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tport = class
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procedure writeport(p : word;data : byte);
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@@ -198,6 +201,7 @@ var
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portb : tport;
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portw : tportw;
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portl : tportl;
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+{$endif SUPPORT_PORTS}
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const
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{ this procedures are assigned to the procedure which are needed }
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@@ -245,6 +249,25 @@ var
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seg_fillword(dosmemselector,seg*16+ofs,count,w);
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end;
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+
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+ procedure test_int31(flag : longint);
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+ begin
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+ asm
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+ pushl %ebx
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+ movw $0,INT31ERROR
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+ movl flag,%ebx
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+ testb $1,%bl
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+ jz .Lti31_1
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+ movw %ax,INT31ERROR
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+ xorl %eax,%eax
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+ jmp .Lti31_2
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+ .Lti31_1:
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+ movl $1,%eax
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+ .Lti31_2:
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+ popl %ebx
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+ end;
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+ end;
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+
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function global_dos_alloc(bytes : longint) : longint;
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begin
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@@ -254,8 +277,14 @@ var
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shrl $0x4,%ebx // convert to Paragraphs
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movl $0x100,%eax // function 0x100
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int $0x31
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+ jnc .LDos_OK
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+ movw %ax,INT31ERROR
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+ xorl %eax,%eax
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+ jmp .LDos_end
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+ .LDos_OK:
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shll $0x10,%eax // return Segment in hi(Result)
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movw %dx,%ax // return Selector in lo(Result)
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+ .LDos_end:
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movl %eax,__result
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end;
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end;
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@@ -476,6 +505,7 @@ var
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end;
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+{$ifdef SUPPORT_PORTS}
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{ to give easy port access like tp with port[] }
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procedure tport.writeport(p : word;data : byte);assembler;
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@@ -522,6 +552,7 @@ asm
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inl %dx,%eax
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end ['EAX','EDX'];
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+{$endif SUPPORT_PORTS}
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function get_cs : word;assembler;
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asm
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@@ -541,24 +572,6 @@ end ['EAX','EDX'];
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end;
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- procedure test_int31(flag : longint);
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- begin
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- asm
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- pushl %ebx
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- movw $0,INT31ERROR
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- movl flag,%ebx
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- testb $1,%bl
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- jz .Lti31_1
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- movw %ax,INT31ERROR
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- xorl %eax,%eax
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- jmp .Lti31_2
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- .Lti31_1:
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- movl $1,%eax
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- .Lti31_2:
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- popl %ebx
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- end;
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- end;
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-
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function set_pm_interrupt(vector : byte;const intaddr : tseginfo) : boolean;
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begin
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@@ -705,9 +718,10 @@ end ['EAX','EDX'];
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{ here we must use ___v2prt0_ds_alias instead of from v2prt0.s
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because the exception processor sets the ds limit to $fff
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at hardware exceptions }
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- var
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- ___v2prt0_ds_alias : word;external name '___v2prt0_ds_alias';
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+ var
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+ ___v2prt0_ds_alias : word; external name '___v2prt0_ds_alias';
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+
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function get_rm_callback(pm_func : pointer;const reg : trealregs;var rmcb : tseginfo) : boolean;
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begin
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asm
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@@ -890,7 +904,7 @@ end ['EAX','EDX'];
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linearaddr : longint;
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begin
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- if get_run_mode <> 4 then
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+ if get_run_mode<>rm_dpmi then
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exit;
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linearaddr:=longint(@data)+get_segment_base_address(get_ds);
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lock_data:=lock_linear_region(linearaddr,size);
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@@ -942,7 +956,7 @@ end ['EAX','EDX'];
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var
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linearaddr : longint;
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begin
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- if get_run_mode <>rm_dpmi then
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+ if get_run_mode<>rm_dpmi then
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exit;
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linearaddr:=longint(functionaddr)+get_segment_base_address(get_cs);
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unlock_code:=unlock_linear_region(linearaddr,size);
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@@ -1084,10 +1098,7 @@ end ['EAX','EDX'];
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function get_run_mode : word;
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begin
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- asm
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- movw _run_mode,%ax
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- movw %ax,__RESULT
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- end ['EAX'];
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+ get_run_mode:=_run_mode;
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end;
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function map_device_in_memory_block(handle,offset,pagecount,device:longint):boolean;
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@@ -1106,19 +1117,6 @@ end ['EAX','EDX'];
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end;
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end;
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- var
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- _core_selector : word;external name '_core_selector';
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-
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- function get_core_selector : word;
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-
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- begin
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- asm
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- movw _core_selector,%ax
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- movw %ax,__RESULT
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- end;
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- end;
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-
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-
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{*****************************************************************************
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Transfer Buffer
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*****************************************************************************}
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@@ -1163,15 +1161,22 @@ end ['EAX','EDX'];
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end;
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+ var
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+ _core_selector : word;external name '_core_selector';
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begin
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int31error:=0;
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- dosmemselector:=get_core_selector;
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+ dosmemselector:=_core_selector;
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end.
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{
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$Log$
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- Revision 1.4 1999-05-13 21:54:27 peter
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+ Revision 1.5 1999-09-09 07:13:29 pierre
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+ - Port[] moved to ports.pp unit
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+ * global_dos_alloc returns zero and set int31error
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+ if DPMI call fails
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+
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+ Revision 1.4 1999/05/13 21:54:27 peter
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* objpas fixes
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Revision 1.3 1999/03/26 00:01:52 peter
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pierre