Texas Instruments TMS34010

Appendix E
The following assembly language code was produced by the TMS34010 C
compiler from the C routines on the previous pages. The comments were ad-
ded
for your convenience.
fll •• i •••••••••••••••••••••••••••••••••••••••••••••••••
•
GSP C CO"PILER, Version 1.04, 86.200 •
•••••••••••••••••••••••••••••••••••••••••••••••••••••••
FP .set
AI3
StK .set
AI4
. fi Ie
"foo.c"
.globl
var3
.bss
_var3,32,16
.qlobl
var5
.bss
_.var5,32,16
.globl _main
1 ••••• 1.1 •• 1 ••••••••••••• 1 •••••••••• 1 ••••• 11.1 ••••••••
I FUNCTION OEF : _main
1 •••••••••••••• , •••••••••••••••••••••• 1 ••••••••• 1 •••••
main:
SP,A7,FP
STK,FP
240,STK iallocate space for local variables
Since the first subroutine call has no parameters there is no preparation
CALLA _functionl ifunction returns int in A8
"OVE A8,A7 ireturn value in A8
"OVB A1,'FP imake assignment to varl (IFP(O))
Prepare for second subroutine call
"OVE STK,-'SP,1 ;Push the program stack pointer onto the
hardware stack. This allows the called
routine to be the one to clean up the
parameters and Its local data area. This
value is simply loaded from the hardware
stack back into the system stack.
;Push global variable var5 onto stack
iPush local variable var4 onto stack
iPush global variable var3 onto stack
iPush local variable var2 onto stack
"OVE
"OVE
"OVE
"OVE
"OVB
"OVE
CALLA
@_varS,'STK+,1
'FP(48),'STK+,1
@_var3,'STK+, I
'FP( 16) • 'STK+, I
'FP,A7
A7,'STK+,1
;Push local variable varl (byte) onto stack
function2
Prepare for third subroutine call
"OVE STK,-tSP,1
"OVE IFP(16),'STK+,1 iPush local variable var2 onto stack
E-3