Hi all,
I was linking several object files to create a binary file when the linker gave
me a warning.  This is the exact message:

OPTLINK (R) for Win32  Release 7.50B1
Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved

loader.obj(loader)
Error 42: Symbol Undefined __acrtused
OPTLINK : Warning 134: No Start Address
memSize.obj(memSize)
Error 39: Relocatable Bases Not Allowed in Absolute Mode at Relative 00010H  fr
om
Segment _TEXT
FRAME  = Frame of Group DGROUP 00000H
TARGET = Segment _DATA 00070H
FIXUPP Type = Segment Base

I understand the __arctused error but the problems with memSize.obj elude me.

memSize.obj is an assembly level module I made that determines the host computers total memory size.  It was designed to be called from a C++ program.

Heres the C++ calling proram:


extern "C" {void memSize(unsigned long &);}

void main()
{
unsigned long sys_mem_size;
memSize(sys_mem_size);
}


Heres the assembly module:

PUBLIC memSize

MODEL SMALL
386

data

buffer		BYTE 20 DUP(?)
count		DWORD 0
arg_ptr		WORD 0

code

memSize PROC NEAR C
PUSH BP
MOV BP, SP
MOV AX, [BP + 4]
MOV arg_ptr, AX
MOV EBX, 00000000h
MOV AX, SEG buffer
MOV ES, AX
MOV AX, OFFSET buffer
MOV DI, AX
L1:
MOV EAX, 0000E820h
MOV EDX, 534D4150h		;'SMAP'
MOV ECX, SIZEOF buffer
INT 15h
JC L2
CMP EBX, 0
JZ L2
MOV EAX, OFFSET buffer + 8
MOV ECX, [EAX]
ADD count, ECX
JMP L1
L2:
MOV BX, arg_ptr
MOV ECX, count
MOV DWORD PTR [BX], ECX
POP BP
RET
memSize ENDP

END


Im trying to make a bootable program with no underlying os support, basically an OS.

Any help would be great, Thanks.

From www.digitalmars.com/ctg/OptlinkErrorMessages.html:

------------------------------------------------------
Relocatable Bases Not Allowed in Absolute Mode

Reference to relocatable data was encountered while processing code in Absolute Mode. That is, the .obj module(s) cannot reference segments or groups, cannot do far jumps or calls, and cannot do DD LABEL, when generating a .com or .sys file, unless the target segment has been declared to be absolute (SEGMENT AT).
------------------------------------------------------

"IR" <IR_member@pathlink.com> wrote in message news:ckot2n$2776$1@digitaldaemon.com...
> Hi all,
> I was linking several object files to create a binary file when the linker
gave
> me a warning.  This is the exact message:
>
> OPTLINK (R) for Win32  Release 7.50B1
> Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
>
> loader.obj(loader)
> Error 42: Symbol Undefined __acrtused
> OPTLINK : Warning 134: No Start Address
> memSize.obj(memSize)
> Error 39: Relocatable Bases Not Allowed in Absolute Mode at Relative
00010H  fr
> om
> Segment _TEXT
> FRAME  = Frame of Group DGROUP 00000H
> TARGET = Segment _DATA 00070H
> FIXUPP Type = Segment Base
>
> I understand the __arctused error but the problems with memSize.obj elude
me.
>
> memSize.obj is an assembly level module I made that determines the host computers total memory size.  It was designed to be called from a C++
program.
>
> Heres the C++ calling proram:
>
>
> extern "C" {void memSize(unsigned long &);}
>
> void main()
> {
> unsigned long sys_mem_size;
> memSize(sys_mem_size);
> }
>
>
> Heres the assembly module:
>
> PUBLIC memSize
>
> MODEL SMALL
> 386
>
> data
>
> buffer BYTE 20 DUP(?)
> count DWORD 0
> arg_ptr WORD 0
>
> code
>
> memSize PROC NEAR C
> PUSH BP
> MOV BP, SP
> MOV AX, [BP + 4]
> MOV arg_ptr, AX
> MOV EBX, 00000000h
> MOV AX, SEG buffer
> MOV ES, AX
> MOV AX, OFFSET buffer
> MOV DI, AX
> L1:
> MOV EAX, 0000E820h
> MOV EDX, 534D4150h ;'SMAP'
> MOV ECX, SIZEOF buffer
> INT 15h
> JC L2
> CMP EBX, 0
> JZ L2
> MOV EAX, OFFSET buffer + 8
> MOV ECX, [EAX]
> ADD count, ECX
> JMP L1
> L2:
> MOV BX, arg_ptr
> MOV ECX, count
> MOV DWORD PTR [BX], ECX
> POP BP
> RET
> memSize ENDP
>
> END
>
>
> Im trying to make a bootable program with no underlying os support,
basically an
> OS.
>
> Any help would be great, Thanks.
>
>
>

I saw that but I'm not sure how to fix it.  If I change the memory model of the memSize.obj file to tiny and integrate the data declarationsinto the code segment the error goes away but I get undesirable results from the program.  I'd rather keep the small memory model and figure out what is causing the error instead of going around it.  I think it has to do with pointers.  I am passing a variable by reference to the memSize module (ie. pointer).  When I use this pointer in the assembly module it is creating the error.  Any suggestions?



In article <ckpfj8$2no8$1@digitaldaemon.com>, Walter says...
>
>From www.digitalmars.com/ctg/OptlinkErrorMessages.html:
>
>------------------------------------------------------
>Relocatable Bases Not Allowed in Absolute Mode
>
>Reference to relocatable data was encountered while processing code in Absolute Mode. That is, the .obj module(s) cannot reference segments or groups, cannot do far jumps or calls, and cannot do DD LABEL, when generating a .com or .sys file, unless the target segment has been declared to be absolute (SEGMENT AT).
>------------------------------------------------------
>
>"IR" <IR_member@pathlink.com> wrote in message news:ckot2n$2776$1@digitaldaemon.com...
>> Hi all,
>> I was linking several object files to create a binary file when the linker
>gave
>> me a warning.  This is the exact message:
>>
>> OPTLINK (R) for Win32  Release 7.50B1
>> Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
>>
>> loader.obj(loader)
>> Error 42: Symbol Undefined __acrtused
>> OPTLINK : Warning 134: No Start Address
>> memSize.obj(memSize)
>> Error 39: Relocatable Bases Not Allowed in Absolute Mode at Relative
>00010H  fr
>> om
>> Segment _TEXT
>> FRAME  = Frame of Group DGROUP 00000H
>> TARGET = Segment _DATA 00070H
>> FIXUPP Type = Segment Base
>>
>> I understand the __arctused error but the problems with memSize.obj elude
>me.
>>
>> memSize.obj is an assembly level module I made that determines the host computers total memory size.  It was designed to be called from a C++
>program.
>>
>> Heres the C++ calling proram:
>>
>>
>> extern "C" {void memSize(unsigned long &);}
>>
>> void main()
>> {
>> unsigned long sys_mem_size;
>> memSize(sys_mem_size);
>> }
>>
>>
>> Heres the assembly module:
>>
>> PUBLIC memSize
>>
>> MODEL SMALL
>> 386
>>
>> data
>>
>> buffer BYTE 20 DUP(?)
>> count DWORD 0
>> arg_ptr WORD 0
>>
>> code
>>
>> memSize PROC NEAR C
>> PUSH BP
>> MOV BP, SP
>> MOV AX, [BP + 4]
>> MOV arg_ptr, AX
>> MOV EBX, 00000000h
>> MOV AX, SEG buffer
>> MOV ES, AX
>> MOV AX, OFFSET buffer
>> MOV DI, AX
>> L1:
>> MOV EAX, 0000E820h
>> MOV EDX, 534D4150h ;'SMAP'
>> MOV ECX, SIZEOF buffer
>> INT 15h
>> JC L2
>> CMP EBX, 0
>> JZ L2
>> MOV EAX, OFFSET buffer + 8
>> MOV ECX, [EAX]
>> ADD count, ECX
>> JMP L1
>> L2:
>> MOV BX, arg_ptr
>> MOV ECX, count
>> MOV DWORD PTR [BX], ECX
>> POP BP
>> RET
>> memSize ENDP
>>
>> END
>>
>>
>> Im trying to make a bootable program with no underlying os support,
>basically an
>> OS.
>>
>> Any help would be great, Thanks.
>>
>>
>>
>
>

I suggest making it as an exe file, and then running exe2bin on it to create a COM file.

"IR" <IR_member@pathlink.com> wrote in message news:ckpicu$2qab$1@digitaldaemon.com...
> I saw that but I'm not sure how to fix it.  If I change the memory model
of the
> memSize.obj file to tiny and integrate the data declarationsinto the code segment the error goes away but I get undesirable results from the
program.  I'd
> rather keep the small memory model and figure out what is causing the
error
> instead of going around it.  I think it has to do with pointers.  I am
passing a
> variable by reference to the memSize module (ie. pointer).  When I use
this
> pointer in the assembly module it is creating the error.  Any suggestions?
>
>
>
> In article <ckpfj8$2no8$1@digitaldaemon.com>, Walter says...
> >
> >From www.digitalmars.com/ctg/OptlinkErrorMessages.html:
> >
> >------------------------------------------------------
> >Relocatable Bases Not Allowed in Absolute Mode
> >
> >Reference to relocatable data was encountered while processing code in Absolute Mode. That is, the .obj module(s) cannot reference segments or groups, cannot do far jumps or calls, and cannot do DD LABEL, when generating a .com or .sys file, unless the target segment has been
declared
> >to be absolute (SEGMENT AT).
> >------------------------------------------------------
> >
> >"IR" <IR_member@pathlink.com> wrote in message news:ckot2n$2776$1@digitaldaemon.com...
> >> Hi all,
> >> I was linking several object files to create a binary file when the
linker
> >gave
> >> me a warning.  This is the exact message:
> >>
> >> OPTLINK (R) for Win32  Release 7.50B1
> >> Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
> >>
> >> loader.obj(loader)
> >> Error 42: Symbol Undefined __acrtused
> >> OPTLINK : Warning 134: No Start Address
> >> memSize.obj(memSize)
> >> Error 39: Relocatable Bases Not Allowed in Absolute Mode at Relative
> >00010H  fr
> >> om
> >> Segment _TEXT
> >> FRAME  = Frame of Group DGROUP 00000H
> >> TARGET = Segment _DATA 00070H
> >> FIXUPP Type = Segment Base
> >>
> >> I understand the __arctused error but the problems with memSize.obj
elude
> >me.
> >>
> >> memSize.obj is an assembly level module I made that determines the host computers total memory size.  It was designed to be called from a C++
> >program.
> >>
> >> Heres the C++ calling proram:
> >>
> >>
> >> extern "C" {void memSize(unsigned long &);}
> >>
> >> void main()
> >> {
> >> unsigned long sys_mem_size;
> >> memSize(sys_mem_size);
> >> }
> >>
> >>
> >> Heres the assembly module:
> >>
> >> PUBLIC memSize
> >>
> >> MODEL SMALL
> >> 386
> >>
> >> data
> >>
> >> buffer BYTE 20 DUP(?)
> >> count DWORD 0
> >> arg_ptr WORD 0
> >>
> >> code
> >>
> >> memSize PROC NEAR C
> >> PUSH BP
> >> MOV BP, SP
> >> MOV AX, [BP + 4]
> >> MOV arg_ptr, AX
> >> MOV EBX, 00000000h
> >> MOV AX, SEG buffer
> >> MOV ES, AX
> >> MOV AX, OFFSET buffer
> >> MOV DI, AX
> >> L1:
> >> MOV EAX, 0000E820h
> >> MOV EDX, 534D4150h ;'SMAP'
> >> MOV ECX, SIZEOF buffer
> >> INT 15h
> >> JC L2
> >> CMP EBX, 0
> >> JZ L2
> >> MOV EAX, OFFSET buffer + 8
> >> MOV ECX, [EAX]
> >> ADD count, ECX
> >> JMP L1
> >> L2:
> >> MOV BX, arg_ptr
> >> MOV ECX, count
> >> MOV DWORD PTR [BX], ECX
> >> POP BP
> >> RET
> >> memSize ENDP
> >>
> >> END
> >>
> >>
> >> Im trying to make a bootable program with no underlying os support,
> >basically an
> >> OS.
> >>
> >> Any help would be great, Thanks.
> >>
> >>
> >>
> >
> >
>
>