From: Brian Cain <bc...@quicinc.com>

siad is the 'Set interrupt auto disable' instruction.

Signed-off-by: Brian Cain <brian.c...@oss.qualcomm.com>
---
 target/hexagon/op_helper.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c
index 687e7f45c2..118f112487 100644
--- a/target/hexagon/op_helper.c
+++ b/target/hexagon/op_helper.c
@@ -1378,7 +1378,15 @@ void HELPER(ciad)(CPUHexagonState *env, uint32_t mask)
 
 void HELPER(siad)(CPUHexagonState *env, uint32_t mask)
 {
-    g_assert_not_reached();
+    uint32_t ipendad;
+    uint32_t iad;
+
+    BQL_LOCK_GUARD();
+    ipendad = READ_SREG(HEX_SREG_IPENDAD);
+    iad = fGET_FIELD(ipendad, IPENDAD_IAD);
+    fSET_FIELD(ipendad, IPENDAD_IAD, iad | mask);
+    arch_set_system_reg(env, HEX_SREG_IPENDAD, ipendad);
+    hex_interrupt_update(env);
 }
 
 void HELPER(swi)(CPUHexagonState *env, uint32_t mask)
-- 
2.34.1

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