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[Qemu-devel] [PATCH 2/2] m68k: Build the opcode table only once to avoid
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From: |
John Paul Adrian Glaubitz |
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Subject: |
[Qemu-devel] [PATCH 2/2] m68k: Build the opcode table only once to avoid multithreading issues |
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Date: |
Wed, 3 Feb 2016 10:37:01 +0100 |
Signed-off-by: John Paul Adrian Glaubitz <address@hidden>
---
target-m68k/translate.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/target-m68k/translate.c b/target-m68k/translate.c
index 535d7f9..f508d1e 100644
--- a/target-m68k/translate.c
+++ b/target-m68k/translate.c
@@ -2828,6 +2828,10 @@ 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
+ issues with multithreading. */
+ 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); \
--
2.7.0