mirror of https://github.com/xemu-project/xemu.git
gen-icount: Use tcg_set_insn_param
Use tcg_set_insn_param() instead of directly accessing internal tcg data structures to update an insn param. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1461931684-1867-3-git-send-email-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@ -5,14 +5,13 @@
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/* Helpers for instruction counting code generation. */
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static TCGArg *icount_arg;
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static int icount_start_insn_idx;
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static TCGLabel *icount_label;
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static TCGLabel *exitreq_label;
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static inline void gen_tb_start(TranslationBlock *tb)
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{
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TCGv_i32 count, flag, imm;
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int i;
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exitreq_label = gen_new_label();
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flag = tcg_temp_new_i32();
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@ -31,13 +30,12 @@ static inline void gen_tb_start(TranslationBlock *tb)
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-ENV_OFFSET + offsetof(CPUState, icount_decr.u32));
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imm = tcg_temp_new_i32();
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/* We emit a movi with a dummy immediate argument. Keep the insn index
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* of the movi so that we later (when we know the actual insn count)
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* can update the immediate argument with the actual insn count. */
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icount_start_insn_idx = tcg_op_buf_count();
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tcg_gen_movi_i32(imm, 0xdeadbeef);
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/* This is a horrid hack to allow fixing up the value later. */
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i = tcg_ctx.gen_last_op_idx;
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i = tcg_ctx.gen_op_buf[i].args;
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icount_arg = &tcg_ctx.gen_opparam_buf[i + 1];
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tcg_gen_sub_i32(count, count, imm);
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tcg_temp_free_i32(imm);
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@ -53,7 +51,9 @@ static void gen_tb_end(TranslationBlock *tb, int num_insns)
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tcg_gen_exit_tb((uintptr_t)tb + TB_EXIT_REQUESTED);
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if (tb->cflags & CF_USE_ICOUNT) {
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*icount_arg = num_insns;
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/* Update the num_insn immediate parameter now that we know
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* the actual insn count. */
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tcg_set_insn_param(icount_start_insn_idx, 1, num_insns);
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gen_set_label(icount_label);
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tcg_gen_exit_tb((uintptr_t)tb + TB_EXIT_ICOUNT_EXPIRED);
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}
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