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tests/modes: Test that mfspr/mtspr to unimplemented SPR in user mode causes HEAI

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Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Paul Mackerras 2025-09-25 11:43:24 +10:00
parent 0255283159
commit 9326fc7f18
3 changed files with 39 additions and 0 deletions
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38
tests/modes/modes.c
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@ -7,6 +7,8 @@
#define MSR_LE 0x1
#define MSR_DR 0x10
#define MSR_IR 0x20
#define MSR_PR 0x4000
#define MSR_EE 0x8000
#define MSR_SF 0x8000000000000000ul
extern unsigned long callit(unsigned long arg1, unsigned long arg2,
@ -27,6 +29,7 @@ static inline void do_tlbie(unsigned long rb, unsigned long rs)
#define DSISR 18
#define DAR 19
#define DEC 22
#define SRR0 26
#define SRR1 27
#define PID 48
@ -35,6 +38,7 @@ static inline void do_tlbie(unsigned long rb, unsigned long rs)
#define SPRG3 275
#define HSRR0 314
#define HSRR1 315
#define HEIR 339
#define PTCR 464
static inline unsigned long mfspr(int sprnum)
@ -464,6 +468,39 @@ int mode_test_8(void)
return 0;
}
int test_9_mf(void)
{
mfspr(2);
return 0;
}
int test_9_mt(unsigned long arg)
{
mtspr(2, arg);
return 0;
}
int mode_test_9(void)
{
unsigned long ret, msr;
/*
* Test that mfspr/mtspr to unimplemented SPRs in user mode
* causes an HEAI and sets HEIR.
*/
msr = MSR_SF | MSR_LE | MSR_PR | MSR_EE | MSR_IR | MSR_DR;
mtspr(DEC, 0x7fffffff);
ret = callit(0, 0, (unsigned long) test_9_mf, msr);
if (ret != 0xe40 ||
(mfspr(HEIR) & 0xfc1fffff) != ((31ul << 26) | (2 << 16) | (339 << 1)))
return 1;
ret = callit(0, 0, (unsigned long) test_9_mt, msr);
if (ret != 0xe40 ||
(mfspr(HEIR) & 0xfc1fffff) != ((31ul << 26) | (2 << 16) | (467 << 1)))
return 2;
return 0;
}
int fail = 0;
void do_test(int num, int (*test)(void))
@ -510,6 +547,7 @@ int main(void)
do_test(6, mode_test_6);
do_test(7, mode_test_7);
do_test(8, mode_test_8);
do_test(9, mode_test_9);
return fail;
}

BIN
tests/test_modes.bin
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1
tests/test_modes.console_out
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@ -6,3 +6,4 @@ test 05:PASS
test 06:PASS
test 07:PASS
test 08:PASS
test 09:PASS