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tests/misc: Add an icbi test

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We have a bug where an icbi can cause an instruction to execute twice.
Add a test case for this.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
This commit is contained in:
Anton Blanchard 2021-09-23 12:23:22 +10:00 committed by Anton Blanchard
parent 13439c76ba
commit 00259458c7
4 changed files with 39 additions and 0 deletions
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30
tests/misc/head.S
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@ -185,3 +185,33 @@ test_loadhitstore:
or %r7,%r6,%r7
subf %r3,%r0,%r7
blr
/* Test for double execution of addi */
.balign 64
.global test_icbi
test_icbi:
1: li %r3,0
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
icbi 0,%r0
nop
nop
nop
nop
nop
nop
nop
nop
addi %r3,%r3,1
blr

8
tests/misc/misc.c
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@ -16,6 +16,7 @@ extern long test_mfpvr(void);
extern long test_mtpvr(void);
extern long test_bdnzl(void);
extern long test_loadhitstore(void);
extern long test_icbi(void);
// i < 100
void print_test_number(int i)
@ -74,5 +75,12 @@ int main(void)
} else
puts(PASS);
print_test_number(7);
if (test_icbi() != 1) {
fail = 1;
puts(FAIL);
} else
puts(PASS);
return fail;
}

BIN
tests/test_misc.bin
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1
tests/test_misc.console_out
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@ -4,3 +4,4 @@ Test 03:PASS
Test 04:PASS
Test 05:PASS
Test 06:PASS
Test 07:PASS