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target-m68k: Build the opcode table only once to avoid multithreading issues

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Backports commit b208525797b031c1be4121553e21746686318a38 from qemu
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John Paul Adrian Glaubitz 2018-02-27 08:08:19 -05:00 committed by Lioncash
parent fd84549b3e
commit 2fd7779aa5
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1 changed files with 7 additions and 0 deletions
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qemu/target-m68k/translate.c
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@ -2906,6 +2906,13 @@ register_opcode(TCGContext *tcg_ctx, disas_proc proc, uint16_t opcode, uint16_t
void register_m68k_insns (CPUM68KState *env)
{
TCGContext *tcg_ctx = env->uc->tcg_ctx;
/* Build the opcode table only once to avoid
multithreading issues. */
if (tcg_ctx->opcode_table[0] != NULL) {
return;
}
#define INSN(name, opcode, mask, feature) do { \
if (m68k_feature(env, M68K_FEATURE_##feature)) \
register_opcode(tcg_ctx, disas_##name, 0x##opcode, 0x##mask); \