Mail Archives: cygwin/2000/03/20/07:26:44
My problem: I want to use the integrated assembler for some time critical
procedures. But I need to get the content of some local vars - I couldn't
find a solution for about 4 hours. I tried to use VC++ style e.g. mov eax,
[asm_var] - didn't work. I wrote an extra procedure and used "%0", "%1" to
get the parameters - didn't work. I tried to use TASM and link the object -
cygwin couldn't read it. Finally used FreePascal (based on gcc) - produced
compilable asm code but it couldn't find the reference. Then I tried to get
the address by calculating it with the help of %ebp - always got access
violation errors. I'm new to asm so I don't know what this "=&a" (var)
means, to - well to assign a var to a register it also didn't work. Is it
only for results?
Is there any good documentation for cygwin to download in which something
like this is explained? For gnu-c there was always such an info tool. Is
there anything similar for cygwin?
An example prog for my problem:
int main() {
int a = 1;
a = 1;
__asm (
" mov eax, [a] ; " // or
" mov ebx, a ; " // or
" mov %eax, %a ; " // or
" mov %eax, %0 ; " // if in an extra procedure
" mov %eax, %h0 ; " // or
" mov %eax, (8)%ebp ; " JUST ISN'T WORKING
...
)
return 0;
}
Thank you.
-- Leonhard
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