From: John Paul Adrian Glaubitz <[email protected]>
Signed-off-by: John Paul Adrian Glaubitz <[email protected]>
Signed-off-by: Laurent Vivier <[email protected]>
Reviewed-by: Richard Henderson <[email protected]>
---
target-m68k/translate.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/target-m68k/translate.c b/target-m68k/translate.c
index deb5a58..eecb32b 100644
--- a/target-m68k/translate.c
+++ b/target-m68k/translate.c
@@ -2841,6 +2841,11 @@ register_opcode (disas_proc proc, uint16_t opcode,
uint16_t mask)
Later insn override earlier ones. */
void register_m68k_insns (CPUM68KState *env)
{
+ /* Build the opcode table only once to avoid
+ multithreading issues. */
+ if (opcode_table[0] != NULL) {
+ return;
+ }
#define INSN(name, opcode, mask, feature) do { \
if (m68k_feature(env, M68K_FEATURE_##feature)) \
register_opcode(disas_##name, 0x##opcode, 0x##mask); \
--
2.7.4
