3fd
Subj : Re: Inline Assembler bug with structs of certain size
To   : borland.public.cpp.borlandcpp
From : Bob Gonder
Date : Thu Dec 02 2004 05:19 pm

Bob Gonder wrote:

>Try
>>  printf("&TestStruct1 = %4p, via asm = %p\n", &TestStruct1, asm_test1());
>
>At least, on my machine, it pushes ds:address for &TestStruct1 and
>cs:value for asm_test1().
>
>The %p properly uses the 16bit address instead of the original 4 and 4
>(ignoring the second parameter)

Should be 32 bit full address instead of the 2 16bit values.

BTW, talking of shifty data.....

Test.h
	extern	long	Three;
	extern	long	Two;
	extern	long	One;

Test.c

#include	"test.h"
	long	One;
	long	Two;
	long	Three;

short Value(void)
{	asm{
		mov	ax, word ptr[Two+4];
	};
	return _AX;
}

int main(void)
{
	One=1;
	Two=2;
	Three=3;
	printf( "\r\n Value=%i \r\n",Value() );
	return 0;
}

What is the value?
Now change Test.h to
	extern	long	One;
	extern	long	Two;
	extern	long	Three;
Now what is Value?

.

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