Texas Instruments TMS34010

E. Interfacing Assembly Language with C
This appendix is an example of the operation of the TMS3401 0 C calling se-
quence. It serves as a guide for users who wish to interface assembly language
routines
with routines written in GSP C. The assembly code shown herein was
generated
by passing the set of C routines below through the TMS34010 C
compiler, which produced TMS34010 assembly language output. You are
encouraged
to modify the C routines, recompile them, and study the resultant
assembly language
output to see the effects of the modification.
II global definition II
int var3:
lonq var5;
mai n ()
f
char var!;
int var2;
lonq var4:
struct
f
i nt struct ._e I ement I;
int struct_element2:
char struct.element3 [12J;
I struct I;
/1 cal I a function with no parameters II
varl ; functionl (I:
II cal I a function with parameters II
function2 (varl, var2, var3, var4, var5):
/" cal I a function with a structure as a parameter "I
function3 (varl, structl, var2):
funct i on I ()
/1 no paramters II
return (l 0) ;
}
E·1