Subj : Re: Inline Assembler bug with structs of certain size
To   : borland.public.cpp.borlandcpp
From : Ed Mulroy [TeamB]
Date : Thu Dec 02 2004 02:34 pm

When I built to compile via assembly it seemed to
handle the code generation well.  When I built without
that, I saw the same thing you reported, the second
function's assembly mov instruction was not generated.

You expressed a desire for the functions and structures
to be near and I did not want the structures to be declared
static because of possible difficulties in seeing their locations
in the debugger, I made a version which made them near,
changing the following lines to how they appear below:

  -------------------
  } __near TestStruct1;
  } __near TestStruct2;
  unsigned __near asm_test1(void) {
  unsigned __near asm_test2(void) {
  -------------------

The program name I used was ques408.c for yours and
ques408B.c for the one I altered to use __near.
Ques408C.c is a copy of yours with the name changed to
build an exe via assembly instead of all in the complier.
You can arrange to build via assembly in two ways, by giving
the command line compiler the -B option or by putting this
pragma at the top of your program when using either of the
IDE or the command line.

  #pragma inline

The make file I used to build these is shown below.  As you
can see, it is not complex.

----------------------------
Done : ques408.exe ques408B.exe ques408C.exe
  @echo Done

ques408C.exe : ques408C.c
  bcc +config.cfg -B ques408C.c

ques408C.c : ques408.c
  @copy /v ques408.c ques408c.c

ques408B.exe : config.cfg ques408B.c
  bcc +config.cfg -B ques408B.c

ques408.exe : config.cfg ques408.c
  bcc +config.cfg ques408.c

config.cfg :
  copy &&|
-v -1 -ml -RT- -x- -TLA -Id:\c\bc5\include
| config.cfg
----------------------------

Below is a screen capture of the build and run of the programs.

----------------------------
F:\Projects\lookat\q408>make
MAKE Version 5.2  Copyright (c) 1987, 1999 Inprise Corp.
        copy MAKE0000.@@@ config.cfg
        1 file(s) copied
        bcc +config.cfg ques408.c
Borland C++ 5.2 Copyright (c) 1987, 1997 Borland International
Mar 19 1997 17:29:40
ques408.c:
Turbo Link  Version 7.1.32.2. Copyright (c) 1987, 1996 Borland International
        bcc +config.cfg -B ques408B.c
Borland C++ 5.2 Copyright (c) 1987, 1997 Borland International
Mar 19 1997 17:29:40
ques408b.c:
Turbo Assembler  Version 4.1  Copyright (c) 1988, 1996 Borland
International

Assembling file:   ques408b.ASM
Error messages:    None
Warning messages:  None
Passes:            1
Remaining memory:  393k

Turbo Link  Version 7.1.32.2. Copyright (c) 1987, 1996 Borland International
        bcc +config.cfg -B ques408C.c
Borland C++ 5.2 Copyright (c) 1987, 1997 Borland International
Mar 19 1997 17:29:40
ques408c.c:
Turbo Assembler  Version 4.1  Copyright (c) 1988, 1996 Borland
International

Assembling file:   ques408c.ASM
Error messages:    None
Warning messages:  None
Passes:            1
Remaining memory:  393k

Turbo Link  Version 7.1.32.2. Copyright (c) 1987, 1996 Borland
International
Done

F:\Projects\lookat\q408>ques408
length of asm_test1 = 8
&TestStruct1 = 0b70, via asm = 1441
length of asm_test2 = 5
&TestStruct2 = 594a, via asm = 1441

F:\Projects\lookat\q408>ques408b
length of asm_test1 = 8
&TestStruct1 = 0b70, via asm = 1441
length of asm_test2 = 8
&TestStruct2 = 594a, via asm = 1441

F:\Projects\lookat\q408>ques408c
length of asm_test1 = 8
&TestStruct1 = 0b70, via asm = 1441
length of asm_test2 = 8
&TestStruct2 = 594a, via asm = 1441

F:\Projects\lookat\q408>
----------------------------

..  Ed

> Jeremy wrote in message
> news:41ae833d$1@newsgroups.borland.com...

.