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# Blackfin testcase for USP handling
# mach: bfin
# sim: --environment operating
#include "test.h"
.include "testutils.inc"
start
imm32 R5, 0x44455566
imm32 R6, 0x12345678
imm32 R7, 0x9abcdef0
imm32 p0, EVT3;
loadsym r0, exception;
[p0] = r0;
loadsym r0, usermode;
reti = r0;
SP = R6;
USP = R7;
RTI;
usermode:
# SP should now be USP
R1 = SP;
CC = R1 == R7;
IF !CC JUMP fail;
# Now set SP to another value
SP = R5;
# Move up to exception space
EXCPT 0;
exception:
# SP should be the same as original, but USP should change
R1 = SP;
CC = R1 == R6;
IF !CC JUMP fail;
R1 = USP;
CC = R1 == R5;
IF !CC JUMP fail;
dbg_pass
fail:
dbg_fail
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