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add two more MMU test cases

Make sure the three lowest bits in IE are shadowed to the PSW register.

Signed-off-by: Michael Walle <>
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mwalle committed Feb 24, 2014
1 parent dfd6ca7 commit 27615ae48de9e8b474177f62722c5ac17613115b
Showing with 18 additions and 0 deletions.
  1. +18 −0 test/unittests/test_mmu.S
@@ -299,6 +299,24 @@ test_name MMU_USER_MODE_5
calli disable_user_mode
check_r3 0xa00
# writing IE should set PSW bits, too
test_name PSW_IE_1
mvi r1, 0x70
wcsr PSW, r1
mvi r1, 7
wcsr IE, r1
rcsr r3, PSW
wcsr PSW, r0
check_r3 0x77
# writing PSW should set IE bits
test_name PSW_IE_2
mvi r1, 0x27
wcsr PSW, r1
rcsr r3, IE
wcsr PSW, r0
check_r3 7

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