tcg-i386: Tidy xchg.
Define and use OPC_XCHG_ax_r32. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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@ -192,6 +192,7 @@ static inline int tcg_target_const_match(tcg_target_long val,
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#define OPC_SHIFT_Ib (0xc1)
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#define OPC_SHIFT_Ib (0xc1)
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#define OPC_SHIFT_cl (0xd3)
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#define OPC_SHIFT_cl (0xd3)
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#define OPC_TESTL (0x85)
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#define OPC_TESTL (0x85)
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#define OPC_XCHG_ax_r32 (0x90)
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#define OPC_GRP3_Ev (0xf7)
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#define OPC_GRP3_Ev (0xf7)
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#define OPC_GRP5 (0xff)
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#define OPC_GRP5 (0xff)
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@ -770,7 +771,8 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
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break;
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break;
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case 3:
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case 3:
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if (data_reg == TCG_REG_EDX) {
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if (data_reg == TCG_REG_EDX) {
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tcg_out_opc(s, 0x90 + TCG_REG_EDX); /* xchg %edx, %eax */
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/* xchg %edx, %eax */
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tcg_out_opc(s, OPC_XCHG_ax_r32 + TCG_REG_EDX);
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tcg_out_mov(s, data_reg2, TCG_REG_EAX);
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tcg_out_mov(s, data_reg2, TCG_REG_EAX);
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} else {
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} else {
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tcg_out_mov(s, data_reg, TCG_REG_EAX);
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tcg_out_mov(s, data_reg, TCG_REG_EAX);
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