[kvm-unit-tests PATCH v5 22/29] powerpc: Fix emulator illegal instruction test for powernv

[Nicholas Piggin]

Illegal instructions cause 0xe40 (HEAI) interrupts rather
than program interrupts.

Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
 powerpc/emulator.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/powerpc/emulator.c b/powerpc/emulator.c
index 39dd5964..035a903c 100644
--- a/powerpc/emulator.c
+++ b/powerpc/emulator.c
@@ -31,6 +31,20 @@ static void program_check_handler(struct pt_regs *regs, void 
*opaque)
        regs->nip += 4;
 }
 
+static void heai_handler(struct pt_regs *regs, void *opaque)
+{
+       int *data = opaque;
+
+       if (verbose) {
+               printf("Detected invalid instruction %#018lx: %08x\n",
+                      regs->nip, *(uint32_t*)regs->nip);
+       }
+
+       *data = 8; /* Illegal instruction */
+
+       regs->nip += 4;
+}
+
 static void alignment_handler(struct pt_regs *regs, void *opaque)
 {
        int *data = opaque;
@@ -362,7 +376,10 @@ int main(int argc, char **argv)
 {
        int i;
 
-       handle_exception(0x700, program_check_handler, (void *)&is_invalid);
+       if (machine_is_powernv())
+               handle_exception(0xe40, heai_handler, (void *)&is_invalid);
+       else
+               handle_exception(0x700, program_check_handler, (void 
*)&is_invalid);
        handle_exception(0x600, alignment_handler, (void *)&alignment);
 
        for (i = 1; i < argc; i++) {
-- 
2.42.0