Getting Compilation Errors: error #126: expected a "(" and error #18: expected a ")"

Hi,

Can you suggest documents to refer to write inline assembly which compiles in TMS 470 tool?

Regards,

Subhahisni

The TI compiler asm statements accept literal strings which are sent directly to the assembly file, so they must written as if they were being written in an assembly source file.  The TI compiler does not support parameterized asm statements.

Hi,

What are the changes required   to make it compile using TMS470 tool  ?

I mean How to rewrite this code in to TMS470 Compiler will understand?

__asm__ __volatile__("swpb %0, %1, [%2]"

:"=&r" (ret)

:"r" (x), "r" (ptr)

:"memory");

Regards,

Subhashini

I do not believe it is possible.  You cannot reliably pass local variables to the inline assembly as parameters.

So there is no way to pass in C code variable to inline assembly?

Global variables, yes.  Local variables, no.

Can I pass in global C variables to inline assembly?

If yes, how to change the below codes?

int foo = 10, bar = 15;

int main()
{
asm("addl %%ebx,%%eax"
:"=a"(foo)
:"a"(foo), "b"(bar)
);
printf("foo+bar=%d\n", foo);

}

I'm sorry, I don't know ARM assembly language.

that's alright.

what assembly language could we use for c5515?

For C55x small data model, TI-format inline assembly would look like this:

int x,y;

void add_y_to_x()
{
    asm("\tMOV *abs16(#_y), AR1\n"
        "\tADD *abs16(#_x), AR1, AR1\n"
        "\tMOV AR1, *abs16(#_x)");
}