74 lines
955 B
ArmAsm
74 lines
955 B
ArmAsm
.include "t-macros.i"
|
|
|
|
start
|
|
|
|
# US bit in the PSW
|
|
load r2 PSW_US
|
|
stsr psw, r3
|
|
or r2, r3
|
|
ldsr r3, psw
|
|
|
|
# check that the bit really was set
|
|
stsr psw, r3
|
|
and r2, r3
|
|
check1x 1 r3 PSW_US
|
|
|
|
|
|
# put something into EP
|
|
load ep ep_base
|
|
|
|
test_sldb1:
|
|
sld.b 0[ep], r4
|
|
check1x 2 r4 0xffffff80
|
|
|
|
test_sldbu1:
|
|
sld.bu 0[ep], r4
|
|
check1x 3 r4, 0x80
|
|
|
|
test_sldh1:
|
|
sld.h 0[ep], r4
|
|
check1x 4 r4 0xffff8080
|
|
|
|
test_sldhu1:
|
|
sld.hu 0[ep], r4
|
|
check1x 5 r4, 0x8080
|
|
|
|
test_sldw1:
|
|
sld.w 0[ep], r4
|
|
check1x 5 r4, 0x80808080
|
|
|
|
|
|
# Now clear the US bit - switch signed/unsigned
|
|
load r2 PSW_US
|
|
not r2, r2
|
|
stsr psw, r3
|
|
and r2, r3
|
|
ldsr r3, psw
|
|
|
|
|
|
test_sldb2:
|
|
sld.b 0[ep], r4
|
|
check1x 6 r4, 0x80
|
|
|
|
test_sldbu2:
|
|
sld.bu 0[ep], r4
|
|
check1x 7 r4 0xffffff80
|
|
|
|
test_sldh2:
|
|
sld.h 0[ep], r4
|
|
check1x 8 r4, 0x8080
|
|
|
|
test_sldhu2:
|
|
sld.hu 0[ep], r4
|
|
check1x 9 r4 0xffff8080
|
|
|
|
test_sldw2:
|
|
sld.w 0[ep], r4
|
|
check1x 5 r4, 0x80808080
|
|
|
|
exit0
|
|
|
|
.align 2
|
|
ep_base:
|
|
.long 0x80808080
|
|
|